Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 1345. Отображено 200.
10-06-2020 дата публикации

Номер: RU2017113700A3
Автор:
Принадлежит:

Подробнее
16-03-2018 дата публикации

ДВОЙНОЙ МНОГОЛУЧЕВОЙ ЭЛЕКТРОДНЫЙ КАТЕТЕР

Номер: RU2016136671A
Принадлежит:

Подробнее
13-02-2014 дата публикации

Elektrodenanordnung für ein behindertes Plasma

Номер: DE102012015482A1
Принадлежит:

Eine Elektrodenanordnung zur Ausbildung eines dielektrisch behinderten Plasmas zwischen einer Wirkfläche (10) der Elektrodenanordnung und einer als Gegenelektrode fungierenden Oberfläche, mit einer flexiblen, flächigen Elektrode (8), die mit einer Hochspannungsquelle (28) verbindbar ist und mit einem flächigen, flexiblen und die Wirkfläche (10) bildenden Dielektrikum (9), das mit der flächigen Elektrode (8) zu einem Elektrodenelement (7) verbunden ist und die Elektrode (8) zur zu behandelnden Oberfläche hin vollständig abdeckt, weist eine verbesserte Anpassbarkeit an unregelmäßige Oberflächen auf durch ein flächenelastisches Andruckmittel (4) zum Andruck auf der der Oberfläche abgewandten Rückseite des Elektrodenelements (7) derart, dass das Elektrodenelement (7) unter lokaler Verformung an Unregelmäßigkeiten der Oberfläche selbsttätig anpassbar ist.

Подробнее
02-07-2014 дата публикации

Apparatus for destroying solid tumours in-situ

Номер: GB0201409103D0
Автор:
Принадлежит:

Подробнее
20-04-2016 дата публикации

A surgical instrument

Номер: GB0002531412A
Принадлежит:

An integrated surgical instrument 1 for reducing smoke particles suspended in a patients abdomen during open surgery procedures comprising a surgical device 2 having an electrically conductive portion 2a, and an ion-generating electrode 3 having an ion emission zone 7 preferably formed of a sharpened or fibrous element. The ion emission zone 7 being moveable relative to the electrically conductive portion 2a between a first position and a second position, preferably along an arcuate path. The distance between the emission zone 7 and the conductive portion 2a in the second position further preferably falls within a pre-determined range dependent upon the proximity of patient tissue with respect to the ion emission zone 7. The surgical instrument may further comprise multiple ion emission zones 7, each of which is selectively moveable. Further independent claims are also provided for an assembly comprising the surgical instrument 2 and a DC electrical source, and a method of reducing smoke ...

Подробнее
20-01-2021 дата публикации

User interface and lock features for positioning multiple componenets within a body

Номер: GB202019320D0
Автор:
Принадлежит:

Подробнее
15-04-1998 дата публикации

DEVICE FOR ENDOMETRIALEN ABLATION

Номер: AT0000164503T
Принадлежит:

Подробнее
15-11-2003 дата публикации

DEVICE FOR MULTIDIMENSIONAL REPRESENTATION AND FOR THE FABRIC ABLATION OF THE HEART

Номер: AT0000252870T
Принадлежит:

Подробнее
11-10-2018 дата публикации

CATHETER WITH DEFORMABLE DISTAL ELECTRODE

Номер: AU2018202079A1
Принадлежит: Spruson & Ferguson

A catheter probe configured with a capability to present a larger tissue contact area or "footprint" for larger, deeper lesions, without increasing the french size of the catheter, especially its distal section, includes an elastically deformable electrode configured to adopt a neutral configuration and a tissue contact configuration. The deformable electrode comprising a hollow porous tube with a distal portion having a closed distal end, and a proximal portion defining an opening to an interior of the tube, where the distal tip end is received in the tube through the opening and the distal section is generally surrounded by tube, with the proximal portion being affixed to an outer surface of the distal section. In some embodiments, the closed distal end is shaped with a bulbous portion that can spread and widen to provide a larger surface contact area. ~C w LOu ...

Подробнее
15-04-2021 дата публикации

Devices and methods for ablating biological tissue

Номер: AU2019323942A1
Принадлежит:

Disclosed herein is a tissue ablation device comprising a sheath and a probe. The sheath is positionable within body tissue and comprises a distal end, a proximal end and a lumen extending therebetween. The probe comprises an elongate portion configured to be slidably received in the lumen, the elongate portion housing an electrode that is deployable from a distal end of the probe's elongate portion into a substantially planar deployed configuration when the distal end of the elongate portion is located at or beyond the distal end of the sheath. An angle of deployment of the electrode from the distal end of the probe (and hence into the body tissue, in use) is selectable by orientating the probe with respect to the sheath.

Подробнее
13-11-2014 дата публикации

Multi-electrode catheter assemblies for renal neuromodulation and associated systems and methods

Номер: AU2013260174A1
Принадлежит:

Catheter apparatuses and systems for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function.

Подробнее
14-04-2016 дата публикации

Low profile electrode assembly

Номер: AU2009314159B2
Принадлежит:

A tissue electrode assembly includes a membrane configured to form an expandable, conformable body that is deployable in a patient. The assembly further includes a flexible circuit positioned on a surface of the membrane and comprising at least one base substrate layer, at least one insulating layer and at least one planar conducting layer. An electrically-conductive electrode covers at least a portion of the flexible circuit and a portion of the surface of the membrane not covered by the flexible circuit, wherein the electrically-conductive electrode is foldable upon itself with the membrane to a delivery conformation having a diameter suitable for minimally-invasive delivery of the assembly to the patient.

Подробнее
30-07-2020 дата публикации

DEVICES AND METHODS FOR ABLATING TISSUE

Номер: CA3127505A1
Принадлежит:

Disclosed herein are tissue ablation devices and methods. The device comprises a sheath comprising a distal end that is positionable at an ablation site in the tissue, a proximal end and a lumen extending therebetween. The device also comprises one or more electrodes that are advanceable and retractable through the lumen, wherein a distal portion of the one or more electrodes is deployable into a tissue ablating configuration from the distal end of the sheath upon advancement, and the one or more electrodes are removable from the lumen via the proximal end of the sheath upon retraction, whereupon the lumen becomes vacated. The sheath is configured for a surgical material to traverse the vacated lumen for delivery from the distal end of the sheath into the tissue.

Подробнее
03-02-2020 дата публикации

UNIPOLAR REFERENCE ELECTRODE FOR ELECTROPHYSIOLOGY MAPPING CATHETER

Номер: CA0003051091A1

An apparatus includes a shaft and an end effector at a distal end of the shaft. The end effector has a distal end and a proximal end with a longitudinal intermediate point between the distal and proximal ends. The end effector is sized to fit in an anatomical passageway within a cardiovascular system. The end effector includes at least one sensor electrode and a reference electrode. The at least one sensor electrode is configured to contact cardiovascular tissue and thereby pick up potentials. The reference electrode is configured to pick up a potential from fluid in contact with the reference electrode. The reference electrode is located proximal to the longitudinal intermediate point of the end effector. The end effector is configured to prevent the reference electrode from contacting tissue.

Подробнее
01-10-2015 дата публикации

EXPANDABLE CATHETER DEVICES ELECTRODE ARRAY

Номер: CA0002945645A1
Принадлежит:

Catheter devices can include an elongate housing extending along a major axis, the elongate housing comprising a first end an opening. The catheter devices can also include an electrode assembly disposed in the elongate housing and including deformable electrodes with respective electrode distal ends, where the electrode distal ends each consist of respective member portions and respective tip portions. The electrode assembly is slidably movable within the housing along the major axis to allow the electrode distal end portions to transition between a first retracted position and a second extended position. The catheter device is configured such that an average distance between the tip portions in the second position is configured to be greater than an average distance between the tip portions in the first position the tip portions are positioned substantially in a same plane when the electrode assembly is in the second position.

Подробнее
04-10-2017 дата публикации

CONVERTIBLE BASKET CATHETER

Номер: CA0002961484A1
Принадлежит:

This disclosure is directed to a catheter having a basket-shaped electrode assembly at the distal end of the catheter body formed from a plurality of spines with electrodes. The basket-shaped electrode assembly structural elements at the proximal and distal ends. The structural elements may maintain the spines in a desired spatial relationship with each other and/or may couple the distal ends of the spines to a pulling member. The basket-shaped electrode assembly has expanded arrangement in which the spines bow outwards and a collapsed arrangement in which the spines are arranged generally along a longitudinal axis of the catheter body ...

Подробнее
28-02-2013 дата публикации

SYSTEMS, DEVICES, AND METHODS FOR TREATMENT OF LUMINAL TISSUE

Номер: CA0002846238A1
Принадлежит:

Methods, systems, and devices for providing treatment to a target site are described. The system may include a guide assembly, an expandable support device coupled with the distal end of the guide assembly, and an operative member disposed on the expandable support device. The expandable support device may be configured to transition between a collapsed and expanded configuration. The expandable support device may be supported by one or more flexible supports aligned in parallel with an axis about which the expandable support device collapses and/or multiple splines arranged in a pattern configured to promote transitioning of the expandable support device between an expanded and collapsed configuration. The guide assembly may be configured to provide torque to the expandable support device. The operative member can include multiple electrodes arranged in parallel to the axis about which the expandable support device collapses.

Подробнее
10-04-2014 дата публикации

SELECTIVELY DEFORMABLE ABLATION DEVICE

Номер: CA0002877829A1
Принадлежит:

In accordance with at least one aspect of this disclosure, an ablation apparatus includes a proximal body portion, a shaft extending distally from the proximal body portion, the shaft being selectively deformable utilizing at least one deformation system between a first position wherein the shaft is straight an a second position wherein the shaft is bent, the at least one deformation system configured to retain the shaft in each of the first and second positions, and at least one electrode disposed at least partially within the shaft, the electrode movable with the shaft upon movement of the shaft between the first and second positions.

Подробнее
14-11-2013 дата публикации

MULTI-ELECTRODE CATHETER ASSEMBLIES FOR RENAL NEUROMODULATION AND ASSOCIATED SYSTEMS AND METHODS

Номер: CA0002872189A1
Принадлежит:

Catheter apparatuses and systems for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function.

Подробнее
30-05-2006 дата публикации

BIPOLAR/MONOPOLAR ENDOMETRIAL ABLATION DEVICE AND METHOD

Номер: CA0002173851C

This invention is an endometrial ablation device and a method of manufacturing and using the device. An RF current is passed through an endometrium (22) to heat it. An electro-conductive expandable member such as a balloon (10) is used as the medium for passing the current and causing the heating of the endometrium (22). The power delivered from a power source to the balloon (10) is selectively provided to a plurality of electrode area segments (34) on the balloon (10) with each of the segments (34) having a thermistor (32) associated with it whereby temperature is monitored and controlled by a feedback arrangement from the thermistors (32). The method of manufacturing the ablation device includes using commercially available stretchable sheet material or providing a mandrel (324) or support base (352) and coating the mandrel or base with an uncured emulsion. The emulsion is then cured to form a bladder-like coating, which is thereafter removed from the mandrel or base to form a bladder ...

Подробнее
28-04-2020 дата публикации

Medical instrument with flexible circuit assembly

Номер: CN0106255470B
Автор:
Принадлежит:

Подробнее
21-05-2020 дата публикации

ELECTROSURGICAL INSTRUMENT

Номер: KR1020200055535A
Автор:
Принадлежит:

Подробнее
10-05-2024 дата публикации

가요성 및 조절가능 팁을 갖는 에너지 전달 장치

Номер: KR102663448B1

... 본 발명은 의료 시술(예컨대, 조직 절제, 절제술, 소작, 혈관 혈전증, 심장 부정맥 및 심박장애의 처치, 전기수술, 조직 채취 등)을 비롯한 매우 다양한 응용을 위해 조직에 에너지를 전달하기 위한 포괄적인 시스템, 장치 및 방법에 관한 것이다. 특히, 가요성 및 조절가능 팁을 갖는 에너지 전달 장치를 사용한 에너지의 인가를 통해 조직 영역(예컨대, 종양)을 처치하기 위한 시스템, 장치 및 방법이 제공된다.

Подробнее
29-09-2020 дата публикации

ENERGY DELIVERY DEVICES WITH FLEXIBLE AND ADJUSTABLE TIPS

Номер: SG11202007746QA
Принадлежит:

Подробнее
19-08-2010 дата публикации

ABLATION CATHETER AND METHOD FOR ELECTRICALLY ISOLATING CARDIAC TISSUE

Номер: WO2010091701A1
Принадлежит:

Ablation catheter comprising an elongate member with proximal and distal ends, wherein the distal end is arranged to apply a high energy electrical shock from a plurality of locations along the length of said distal end and wherein said distal end is curved. Preferably the distal end of the elongate member extends in a circle segment.

Подробнее
30-03-2006 дата публикации

SURGICAL CLAMP HAVING TREATMENT ELEMENTS

Номер: WO2006032951A3
Принадлежит:

A medical device (10) is provided having a means for actuating a pair of opposing jaw members (20, 22). The jaw members are movable relative to one another from a first position, wherein the jaw members are disposed in a spaced apart relation to one another, to a second position, wherein the jaw members cooperate to grasp tissue therebetween. An ablation tool (24) is connected to at least one of the jaws members, such that the jaw members are capable of conducting ablation energy through the tissue grasped therebetween.

Подробнее
20-04-1995 дата публикации

BIPOLAR/MONOPOLAR ENDOMETRIAL ABLATION DEVICE AND METHOD

Номер: WO1995010326A1
Принадлежит:

This invention is an endometrial ablation device and a method of manufacturing and using the device. An RF current is passed through an endometrium (22) to heat it. An electro-conductive expandable member such as a balloon (10) is used as the medium for passing the current and causing the heating of the endometrium (22). The power delivered from a power source to the balloon (10) is selectively provided to a plurality of electrode area segments (34) on the balloon (10) with each of the segments (34) having a thermistor (32) associated with it whereby temperature is monitored and controlled by a feedback arrangement from the thermistors (32). The method of manufacturing the ablation device includes using commercially available stretchable sheet material or providing a mandrel (324) or support base (352) and coating the mandrel or base with an uncured emulsion. The emulsion is then cured to form a bladder-like coating, which is thereafter removed from the mandrel or base to form a bladder ...

Подробнее
21-03-2000 дата публикации

Method and apparatus for endometrial ablation

Номер: US0006041260A
Автор:
Принадлежит:

An endometrial ablation apparatus and method wherein an RF current having a frequency of between 250 kHz and 100 MHz is passed through the entire surface of an endometrium in order to provide heating of the endometrium. An electroconductive expandable member such as a balloon is used as the medium for passing the current and causing the heating of the endometrium. The temperature of the endometrium is raised to a temperature between 45 DEG C. and 90 DEG C. and preferably not above 70 for a time sufficient to destroy the cells of the lining while maintaining the average temperature of the myometrium at a temperature below approximately 42 DEG C. The expandable balloon is connected to a power source which provides the radio frequency power having the desired characteristics to selectively heat the endometrial lining to the desired temperature. The balloon can be constructed with an electroconductive elastomer such as a mixture of polymeric elastomer and electroconductive particles or can ...

Подробнее
04-02-1997 дата публикации

Systems and methods for positioning multiple electrode structures in electrical contact with the myocardium

Номер: US0005598848A
Автор:
Принадлежит:

Systems and methods evaluate electrical contact between the myocardium and one or more electrodes inside the heart. The systems and methods electrically sense electrical contact between the myocardium and electrodes and generate unitary contact-indicating outputs indicating the presence or absence of electrical contact between the myocardium and each particular electrode. The systems and methods also correlate the electrode-specific unitary outputs to generate a compound contact-indicating output. The compound output represents the aggregate of the electrical contact between the myocardium and multiple electrodes on a multiple electrode array.

Подробнее
06-02-2020 дата публикации

UNIPOLAR REFERENCE ELECTRODE FOR ELECTROPHYSIOLOGY MAPPING CATHETER

Номер: US20200038101A1
Принадлежит:

An apparatus includes a shaft and an end effector at a distal end of the shaft. The end effector has a distal end and a proximal end with a longitudinal intermediate point between the distal and proximal ends. The end effector is sized to fit in an anatomical passageway within a cardiovascular system. The end effector includes at least one sensor electrode and a reference electrode. The at least one sensor electrode is configured to contact cardiovascular tissue and thereby pick up potentials. The reference electrode is configured to pick up a potential from fluid in contact with the reference electrode. The reference electrode is located proximal to the longitudinal intermediate point of the end effector. The end effector is configured to prevent the reference electrode from contacting tissue.

Подробнее
05-09-2006 дата публикации

Steerable and shapable catheter employing fluid force

Номер: US0007101362B2
Автор: Guy Vanney, VANNEY GUY

A catheter employing fluid force to steer and/or shape the catheter. In one particular implementation, the catheter includes at least one actuating lumen operably associated with the shaft of the catheter. The at least one actuating lumen is in fluid communication with a valve or other fluid control means at its proximal end. The at least one actuating lumen extends along the length of the catheter shaft and terminates at some point along the length of the shaft. Upon introduction of fluid into the actuating lumen, the fluid creates a force which causes the catheter to bend. As such, fluid may be used to steer and/or shape the catheter.

Подробнее
07-09-2021 дата публикации

Biopsy devices and related methods of use

Номер: US0011109848B2
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

A biopsy device may include a first jaw having a first distal tip configured to pierce tissue, and a second jaw movable relative to the first jaw between a closed configuration where the first jaw and the second jaw are axially aligned, and an open configuration where the first jaw and the second jaw are offset from one another, the second jaw having a second distal tip proximal to the first distal tip in the closed configuration.

Подробнее
29-07-2014 дата публикации

Ablation catheter with flexible tip

Номер: US8790341B2

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

Подробнее
06-07-1995 дата публикации

Номер: JP0007506033A
Автор:
Принадлежит:

Подробнее
23-12-2014 дата публикации

Vorrichtungen zur Durchführung einer nicht kontinuierlichen umfänglichen Behandlung eines Körperlumens

Номер: DE202007019647U1
Автор:

Gerät (300) für eine diskontinuierliche umfängliche Behandlung eines Blutgefäßes eines Patienten, wobei das Gerät umfasst: eine Vorrichtung, welche einen Katheter (302) umfasst, der zum Anordnen innerhalb des Blutgefäßes eingerichtet ist; eine erste Elektrode (307), welche mit der Vorrichtung verbunden ist; eine zweite Elektrode (307), welche mit der Vorrichtung verbunden ist, und eine dritte Elektrode (307), welche mit der Vorrichtung verbunden ist, wobei die erste Elektrode und die zweite Elektrode und die dritte Elektrode entlang der Vorrichtung der Länge nach voneinander beabstandet und im Winkel zueinander versetzt sind, wobei eine jeweilige der ersten Elektrode und der zweiten Elektrode und der dritten Elektrode eingerichtet ist, weniger als einem vollständigen Umfang des Blutgefäßes des Patienten Energie zuzuführen, und wobei die erste Elektrode und die zweite Elektrode und die dritte Elektrode mit einem expandierbaren Element (304) verbunden sind, welches eingerichtet ist, die erste ...

Подробнее
06-08-2014 дата публикации

Apparatus for destroying solid tumours in-situ

Номер: GB0002510534A
Принадлежит:

An apparatus for detaching a solid tumour from surrounding tissue. It has an elongate radio frequency (RF) probe having a distal portion with an elongate electrode and at least one tissue detaching electrode connected to the elongate electrode. The tissue detaching electrode is extensible from a retracted position to a position at a predetermined distance from the longitudinal electrode to define an enclosed boundary of an area within which a solid tumour may be located. An RF current source provides an RF ablating current with a current return path between the elongate electrode and the tissue detaching electrode such that the RF ablating current extends through the region between the tissue detaching electrode and the elongate electrode to cause tissue death in that region and wherein the RF current source provides an RF cutting current for separating the tissue from surrounding tissue.

Подробнее
26-02-2009 дата публикации

Steerable catheter with hydraulic or pneumatic actuator

Номер: AU2005267119B2
Принадлежит:

Подробнее
06-02-2020 дата публикации

Expandable catheter assembly with flexible printed circuit board

Номер: AU2018250516B2
Принадлежит: Watermark Intellectual Property Pty Ltd

Provided is a flex-PCB catheter device that is configured to be inserted into a body lumen. The flex-PCB catheter comprises an elongate shaft, an expandable assembly, a flexible printed circuit board (flex-PCB) substrate, a plurality of electronic components and a plurality of communication paths. The elongate shaft comprises a proximal end and a distal end. The expandable assembly is configured to transition from a radially compact state to a radially expanded state. The plurality of electronic elements are coupled to the flex-PCB substrate and are configured to receive and/or transmit an electric signal. The plurality of communication paths are positioned on and/or within the flex-PCB substrate. The communication paths selectively couple the plurality of electronic elements to a plurality of electrical contacts configured to electrically connect to an electronic module configured to process the electrical signal. The flex-PCB substrate can have multiple layers, including one or more metallic ...

Подробнее
02-09-2021 дата публикации

Electrosurgical device and methods

Номер: AU2021218005A1
Принадлежит:

Abstract A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller is configured to control a power output of the segmentation device. The controller has a processing component, responsive to the sensors, configured to execute the following: (a) derive a power factor of power applied to the at least one electrode; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the at least one electrode. IF (PF ~ 0) and ((Vrms/Irms);> T), THEN the circuit status is "open". IF (PF ~ 0) and ((Vrms/Irms) < T), THEN the circuit status is "short". PF is the power factor. T is a threshold value.

Подробнее
16-11-2017 дата публикации

IRRIGATED BALLOON CATHETER WITH FLEXIBLE CIRCUIT ELECTRODE ASSEMBLY

Номер: AU2017202466A1
Принадлежит: Fisher Adams Kelly Callinans

An irrigated balloon catheter for use in an ostium of a pulmonary vein, includes a flex circuit electrode assembly adapted for circumferential contact with the ostium when the balloon is inflated. Adapted for both diagnostic and therapeutic applications and procedures, the balloon catheter may be used with a lasso catheter or focal catheter. The flex circuit electrode assembly includes a substrate, a contact electrode on an outer surface of the substrate, the contact electrode having a "fishbone" configuration with a ) longitudinally elongated portion and a plurality of transversal fingers, and a wiring electrode on an inner surface of the substrate, and conductive vias extending through the substrate electrically coupling the contact electrode and the writing electrodes. Microelectrodes with exclusion zones are strategically positioned relative to the electrodes. The electrodes may also be split into electrode portions. c0 w ZU~ Lu (fw0 _ Lo -- QD :: I o n U UJn0 C)10 CoN ...

Подробнее
20-02-2020 дата публикации

Unipolar reference electrode for electrophysiology mapping catheter

Номер: AU2019210560A1
Принадлежит: Spruson & Ferguson

An apparatus includes a shaft and an end effector at a distal end of the shaft. The end effector has a distal end and a proximal end with a longitudinal intermediate point between the distal and proximal ends. The end effector is sized to fit in an anatomical passageway within a cardiovascular system. The end effector includes at least one sensor electrode and a reference electrode. The at least one sensor electrode is configured to contact cardiovascular tissue and thereby pick up potentials. The reference electrode is configured to pick up a potential from fluid in contact with the reference electrode. The reference electrode is located proximal to the longitudinal intermediate point of the end effector. The end effector is configured to prevent the reference electrode from contacting tissue.

Подробнее
24-08-2017 дата публикации

Selectively deformable ablation device

Номер: AU2013327705B2
Принадлежит: Spruson & Ferguson

In accordance with at least one aspect of this disclosure, an ablation apparatus includes a proximal body portion, a shaft extending distally from the proximal body portion, the shaft being selectively deformable utilizing at least one deformation system between a first position wherein the shaft is straight an a second position wherein the shaft is bent, the at least one deformation system configured to retain the shaft in each of the first and second positions, and at least one electrode disposed at least partially within the shaft, the electrode movable with the shaft upon movement of the shaft between the first and second positions.

Подробнее
02-12-2017 дата публикации

BALLOON CATHETER AND RELATED IMPEDANCE-BASED METHODS FOR DETECTING OCCLUSION

Номер: CA0002969287A1
Принадлежит:

A system for assessing occlusion of a region to blood flow includes a catheter with an inflatable member, a first electrode configured for placement upstream of the inflatable member and the second electrodes configured for placement downstream of the inflatable member, the inflatable member configured for inflation to occlude the blood flow through the region. The system further includes a current/voltage source, a resistor and a voltmeter, wherein these components along with the first and second electrodes are configured to form an impedance measuring circuit configured to detect a change in impedance for indicating occlusion of the region to the blood flow.

Подробнее
28-10-2017 дата публикации

METHOD OF CONSTRUCTING IRRIGATED BALLOON CATHETER

Номер: CA0002963818A1
Принадлежит:

A method of constructing an inflatable electrode assembly configured for irrigation, comprises: providing a flex circuit haying a substrate with a pre-formed aperture, the substrate constructed of a material having a greater heat resistance or a first melting temperature; providing a balloon member with a membrane, the membrane constructed of a material having a lesser heat resistance or a second melting temperature lower than the first melting temperature of the substrate; affixing the substrate to the membrane wherein a surrounding portion of the substrate around the pre-formed aperture masks a surrounding portion of the membrane so as to expose a target portion of the membrane; and applying heat to the target portion of the membrane through the pre-formed aperture of the substrate, wherein the heat applied, without melting the substrate, melts the target portion of the membrane in forming an aperture in the membrane.

Подробнее
06-02-2014 дата публикации

RADIOFREQUENCY PROBE FOR CIRCUMFERENTIAL ABLATION OF A HOLLOW CAVITY

Номер: CA0002878588A1
Принадлежит:

A probe for ablating tissue of a body cavity includes a shaft, an inflatable balloon connected to the shaft, and an electrode structure on or surrounding the balloon. The balloon expands within the body cavity to place the electrode structure in contact with the tissues in the body cavity. Additional electrodes, which are housed within the balloon during insertion into the cavity, can be extended outwardly from the balloon to penetrate the tissues in the body cavity. The electrode structure and the additional electrodes are adapted to transmit electrical energy to tissue of the body cavity in order to ablate the tissues up to a predetermined depth.

Подробнее
06-08-2015 дата публикации

SHAPE-ADAPTING ELECTRODE FOR ELECTROMAGNETIC ENERGY TRANSFER

Номер: CA0002936297A1
Принадлежит:

The present invention is related to a radiofrequency electrode (RF electrode) for the use in hyperthermia that can be fitted to the shape of a target to be treated (e.g. a patient) and that is also able to reversibly retain the shape it has been fitted to. Thereby, a reliable and close contact between the target to be treated (e.g. a patient) and the inventive RF electrode is established that enables an efficient and safe energy transfer to the target to be treated during a hyperthermia treatment of various medical conditions or for cosmetic purposes. The RF electrode has a target-averted side and a mouldable target-facing side and an inner cavity in between, wherein the inner cavity is fillable and emptiable and perfusable with a liquid and/or a liquid substitute and the inner cavity contains solid particles arrangeable in the presence of a liquid and/or a liquid substitute within the inner cavity and at least a part of the surface of the target-facing side is electrically conductive and ...

Подробнее
11-06-2017 дата публикации

ELECTRODE ARRAY CATHETER WITH INTERCONNECTED FRAMEWORK

Номер: CA0002950172A1
Принадлежит:

This disclosure includes a catheter with an electrode array formed by an interconnected framework. The framework may have a plurality of elements interconnected by a plurality of junctions at locations intermediate the proximal and distal ends of the electrode array assembly. The electrodes may be printed on a polymeric layer of the interconnected framework.

Подробнее
17-05-2017 дата публикации

GUIDEWIRE WITH ABLATION AND COAGULATION FUNCTIONALITY

Номер: CA0002947717A1
Принадлежит:

Apparatus, including a guidewire, having a distal end dimensioned to penetrate into a nasal sinus and a balloon, which is fitted over the guidewire in proximity to the distal end. There is an inflation channel, which runs along the guidewire and is coupled to convey a pressurized fluid into the balloon so as to inflate the balloon. The apparatus also includes a first electrode, fixedly attached to a distal tip of the guidewire, and a second electrode, fixedly attached to the guidewire at a location proximal to the distal tip. There are conductive leads running along the guidewire and coupled to apply an electrical potential between the first and second electrodes.

Подробнее
06-03-2014 дата публикации

CATHETER SYSTEM AND METHODS OF MEDICAL USES OF SAME, INCLUDING DIAGNOSTIC AND TREATMENT USES FOR THE HEART

Номер: CA0002881457A1
Принадлежит:

The present invention includes systems, devices and methods for treating and/or diagnosing a heart arrhythmia, such as atrial fibrillation. Specifically, the present invention provides a system including a diagnostic catheter and an ablation catheter. The diagnostic catheter includes a shaft, multiple dipole mapping electrodes and multiple ultrasound transducers. The ablation catheter is slidingly received by the diagnostic catheter shaft.

Подробнее
26-10-2021 дата публикации

CATHETER SYSTEM AND METHODS OF MEDICAL USES OF SAME, INCLUDING DIAGNOSTIC AND TREATMENT USES FOR THE HEART

Номер: CA2881457C
Принадлежит: ACUTUS MEDICAL INC, ACUTUS MEDICAL, INC.

The present invention includes systems, devices and methods for treating and/or diagnosing a heart arrhythmia, such as atrial fibrillation. Specifically, the present invention provides a system including a diagnostic catheter and an ablation catheter. The diagnostic catheter includes a shaft, multiple dipole mapping electrodes and multiple ultrasound transducers. The ablation catheter is slidingly received by the diagnostic catheter shaft.

Подробнее
22-05-1997 дата публикации

MULTIPLE ELECTRODE SUPPORT STRUCTURES HAVING OPTIMAL BIO-MECHANICAL CHARACTERISTICS

Номер: CA0002210296A1
Принадлежит:

An electrode support structure comprises a distal hub (48) and a proximal base (12) aligned along a major axis with the distal hub (48). An array of generally flexible spline elements (180) extends between the hub (48) and the base (12). The spline elements (180) each have an elongated axis that, at the base (12), extends generally parallel to the major axis and, at the hub (48), extends at an angle measured relative to the major axis of between 45 degrees and 110 degrees. The spline elements (180) collectively define a distal surface (66) lying within an envelope that approximates the curvature of endocardial tissue and within which envelope the distal hub (48) lies. According to this aspect of the invention, the distal surface (66), when contacting endocardial tissue, increases in surface area in response to force applied generally along the major axis to mediate tissue pressure.

Подробнее
23-06-1998 дата публикации

ELECTROSURGICAL DEVICE FOR HARVESTING A VESSEL ESPECIALLY THE INTERNAL MAMMARY ARTERY FOR CORONARY ARTERY BYPASS GRAFTING

Номер: CA0002225428A1
Принадлежит:

Devices and methods for minimally invasive harvesting of a vessel, especially th e internal mammary artery for coronary artery bypass grafting, are disclosed. Gene rally, an electrosurgical instrument is provided which has a scissors mechanism or other e nd effector for dissecting tissue. The instrument also has monopolar or bipolar capabilities . Bipolar blade configurations provide current flow between blades or within each blade of the scissors mechanism or both. The instrument includes at least one ergonomically positioned actuator for actuating movement of the blades or end effectors for cutting tissue, for ac tuating current flow f cauterizing tissue, or for simultaneously or sequentially actuating movem ent and current flow. In one embodiment, the actuator is operable by a fingertip. The in strument also has a shaft which extends between the scissor mechanism and a handle portion whi ch may be selectively rotatable or malleable to optimize orientation of the scissor mechan ism.

Подробнее
28-01-1999 дата публикации

EXPANDABLE CATHETER HAVING IMPROVED ELECTRODE DESIGN, AND METHOD FOR APPLYING ENERGY

Номер: CA0002296691A1
Принадлежит:

A catheter having expandable electrodes for applying energy to a hollow anatomical structure such as a vein. When used on a vein, the catheter is useful for a minimally invasive treatment of venous insufficiency. The catheter includes conductive end rings to which the electrodes are attached, for mechanically connecting and electrically tying electrodes together to provide for single wire electrical connection points, for transmitting energy while more evenly spacing the electrodes. Expandable arms are formed of electrically conductive material and insulated along their length except for an intermediate section that functions as the electrode. The arms are tapered to allow more room for wiring and to reduce the possibility of shorting between the ends of the arms. The catheter further includes thermocouples in the electrodes for measuring temperatures on the outer surface of the electrode. Slots are formed in the arms for mounting the thermocouples. The temperature at the hollow anatomical ...

Подробнее
12-12-2017 дата публикации

BALLOON CATHETER AND RELATED IMPEDANCE-BASED METHODS FOR DETECTING OCCLUSION

Номер: CN0107456273A
Принадлежит:

Подробнее
28-02-2002 дата публикации

Devices for less-invasive intracardiac interventions

Номер: US20020026094A1
Автор: Alex Roth
Принадлежит:

Devices, systems, and methods are provided for accessing the interior of the heart and performing procedures therein while the heart is beating. In one embodiment, a tubular access device having an inner lumen is provided for positioning through a penetration in a muscular wall of the heart, the access device having a means for sealing within the penetration to inhibit leakage of blood through the penetration. The sealing means may comprise a balloon or flange on the access device, or a suture placed in the heart wall to gather the heart tissue against the access device. An obturator is removably positionable in the inner lumen of the access device, the obturator having a cutting means at its distal end for penetrating the muscular wall of the heart. The access device is preferably positioned through an intercostal space and through the muscular wall of the heart. Elongated instruments may be introduced through the tubular access device into an interior chamber of the heart to perform procedures ...

Подробнее
27-07-2021 дата публикации

Systems and methods of ablating cardiac tissue

Номер: US0011071585B2

The subject of this disclosure includes systems, devices and methods to treat a predetermined patient population for paroxysmal atrial fibrillation, the method including ablating tissue of one or more targeted pulmonary veins with one or more of a plurality of the electrodes of an independently controlled multi-electrode radiofrequency balloon catheter, the balloon catheter comprising the plurality of electrodes for radiofrequency ablation that are independently controllable; determining a predictor, based on ablation parameters of the balloon catheter, of single shot pulmonary vein isolation (PVI) success rate; and achieving, based on the predictor and step of ablating tissue, a single shot isolation PVI success rate in the isolation of all targeted pulmonary veins for the predetermined patient population.

Подробнее
19-10-2017 дата публикации

BASKET CATHETER WITH MICROELECTRODE ARRAY DISTAL TIP

Номер: US20170296125A1
Принадлежит: BIOSENSE WEBSTER (ISRAEL) LTD.

A catheter adapted for greater mapping resolution and location precision has a basket-shaped, high density electrode assembly for large-area mapping, and an integrated distal tip providing an array of ultra-high density microelectrodes for acute focal mapping. The basket-shaped electrode assembly 18 has a plurality of electrode-carrying spines and the distal tip has a nonmetallic, electrically insulating substrate body with indentations in which microelectrodes are positioned in a manner that the outer surface is generally flush with the outer surface of the substrate body to present a generally smooth, atraumatic distal tip profile.

Подробнее
25-07-2017 дата публикации

Expandable support structure for delivery through a working channel

Номер: US0009713418B2
Принадлежит: Covidien LP

Methods, systems, and devices for providing treatment to a target site are described. The system may include a guide assembly, an expandable support device coupled with the distal end of the guide assembly, and an operative member disposed on the expandable support device. The expandable support device may be configured to transition between a collapsed and expanded configuration. The expandable support device may be supported by one or more flexible supports aligned in parallel with an axis about which the expandable support device collapses and/or multiple splines arranged in a pattern configured to promote transitioning of the expandable support device between an expanded and collapsed configuration. The guide assembly may be configured to provide torque to the expandable support device. The operative member can include multiple electrodes arranged in parallel to the axis about which the expandable support device collapses.

Подробнее
10-03-2020 дата публикации

Basket catheter with improved spine flexibility

Номер: US0010582871B2

A catheter with basket-shaped electrode assembly with spines configured for hyper-flexing in a predetermined, predictable manner when a compressive force acts on the assembly from either its distal end or its proximal end. At least one spine has at least one region of greater (or hyper) flexibility that allows the electrode assembly to deform, for example, compress, for absorbing and dampening excessive force that may otherwise cause damage or injury to tissue wall in contact with the assembly, without compromising the structure and stiffness of the remaining regions of the spine, including its distal and proximal regions. The one or more regions of greater flexibility in the spine allow the spine to flex into a generally V-shape configuration or a generally U-shape configuration.

Подробнее
07-04-2020 дата публикации

Devices and methods for transurethral bladder partitioning

Номер: US0010610294B2
Принадлежит: NewUro, B.V., NEWURO B V

Systems, devices, and methods to treat a urinary bladder are disclosed. An expandable member is introduced and expanded in the urinary bladder to appose one or more elongate conductors on the outer surface of the expandable member against the inner wall of the urinary bladder. The one or more elongate conductors are used to create a predetermined pattern of electrically isolated tissue regions having reduced electrical propagation such that electrical propagation through the urinary bladder as a whole is reduced. A mucus layer may be removed from the inner bladder wall prior to the ablation. Ablation may be regulated by impedance measurement with the one or more elongate conductors. The urinary bladder may be filled with a fluid to facilitate the impedance measurement.

Подробнее
18-11-2014 дата публикации

Multi-electrode catheter assemblies for renal neuromodulation and associated systems and methods

Номер: US0008888773B2

Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function.

Подробнее
28-09-2021 дата публикации

Electrosurgical generator and methods

Номер: US0011129660B2
Принадлежит: Covidien AG, COVIDIEN AG

The disclosed technology is directed to a RF power generator and feedback control system used to regulate the electrical power delivered to a cutting filament (i.e., a cutting electrode) of an electrosurgical instrument. The electrosurgical instrument uses the delivered energy to form a cutting arc for ablating a tissue mass to access a target tissue therein. The instrument forms a basket-like receptacle around the target tissue to excise the target tissue from the ablated tissue mass. As the instrument forms the receptacle, the length of exposed filament ablating the tissue changes. To this end, the RF power generator described herein is configured to vary the total power delivered during the deployment of the instrument based on a measurement of output power derived from a differential phase angle between a current sense output and a voltage sense output, in some embodiments, to maintain a uniform power density along the length of exposed filament.

Подробнее
28-01-2020 дата публикации

Devices and methods for therapeutic heat treatment

Номер: US0010543035B2

Methods and devices (e.g., for nerve modulation) may include at least one thermistor and a balloon having a balloon wall. In one or more embodiments, the medical device is configured and arranged to transfer heat to the medical device surroundings. In one or more embodiments, the at least one thermistor is a portion of a thermistor array disposed on the balloon wall, the thermistor array including a plurality of thermistors and operatively engaged with a source of electric current. In one or more embodiments, the device includes at least one flexible circuit mounted on the outer surface of the expandable balloon, the at least one flexible circuit including at least one temperature-sensing device that includes at least one thermistor, wherein at least a portion of a conductive layer is electronically coupled to the thermistor, with the proviso that no electrode is associated with the conductive layer.

Подробнее
10-11-2016 дата публикации

КАТЕТЕРНЫЕ УСТРОЙСТВА, СОДЕРЖАЩИЕ БЛОКИ ИЗ НЕСКОЛЬКИХ ЭЛЕКТРОДОВ, ДЛЯ ПОЧЕЧНОЙ НЕЙРОМОДУЛЯЦИИ И СООТВЕТСТВУЮЩИЕ СИСТЕМЫ И СПОСОБЫ

Номер: RU2601906C2

Группа изобретений относится к медицинской технике, а именно к средствам нейромодуляции. Катетерный аппарат включает удлиненный трубчатый ствол, имеющий проксимальную часть и дистальную часть, и терапевтический блок, расположенный на дистальной части удлиненного ствола и приспособленный к размещению в целевом участке внутри почечной артерии пациента, где терапевтический блок включает поддерживающую структуру, содержащую контрольный элемент, имеющий предварительно заданную спиральную форму, где контрольный элемент является трубчатой структурой, содержащей полость, проходящую в ней, и состоящей из нитиноловой мультифиламентной витой проволоки, и множество элементов, доставляющих энергию, переносимых поддерживающей структурой, где удлиненный трубчатый ствол и терапевтический блок вместе определяют полость для проволочного направляющего элемента, сконструированную для приема при скольжении медицинского проволочного направляющего элемента и где аксиальное перемещение проволочного направляющего ...

Подробнее
03-04-2018 дата публикации

КАТЕТЕР ДЛЯ ДЕНЕРВАЦИИ

Номер: RU2649527C2
Принадлежит: ХАНДОК ИНК. (KR)

Группа изобретений относится к медицинской технике, а именно к устройствам денервации. Катетер для денервации содержит корпус катетера, проходящий в одном направлении с образованием проксимального конца и дистального конца и имеющий внутреннее пространство, образованное в его продольном направлении, подвижный элемент, установленный на дистальном конце корпуса катетера с возможностью перемещения в продольном направлении корпуса катетера, управляющий элемент, имеющий дистальный конец, присоединенный к подвижному элементу для перемещения подвижного элемента, множество опорных элементов, имеющих один конец, присоединенный к конечной части корпуса катетера, и другой конец, присоединенный к подвижному элементу, при этом, когда подвижный элемент перемещается для уменьшения расстояния между конечной частью корпуса катетера и подвижным элементом, по меньшей мере отдельный участок множества опорных элементов сгибается так, что сгибающийся участок удаляется от корпуса катетера, множество электродов ...

Подробнее
13-02-2017 дата публикации

НЕРВЫ, ПОДВЕРГАЮЩИЕСЯ ЦЕЛЕВОЙ АБЛЯЦИИ, В НИЖНЕЙ ПОЛОЙ ВЕНЕ И/ИЛИ БРЮШНОЙ АОРТЕ РЯДОМ С НИМИ ДЛЯ ЛЕЧЕНИЯ ГИПЕРТЕНЗИИ

Номер: RU2610529C2

Изобретение относится к медицине, в частности к медицинской технике, и может быть использовано для абляции ткани в целевом местонахождении в брюшной аорте, нижней полой вене и/или левой почечной вене. Аппарат содержит удлиненный трубчатый корпус, снабженный дистальным наконечником с множеством шипов, расположенных на нем. Каждый шип имеет свободный дистальный конец и абляционный элемент, расположенный на свободном дистальном конце каждого шипа. шипы имеют s-образную форму, извиваясь в направлении продольной оси трубчатого корпуса, а затем на удалении от нее, образуя вторичный изгиб. Каждый шип состоит из материала с памятью формы, который способен быть главным образом прямым, будучи ограниченным в доставляющем проводнике, и который возвращается в s-образную форму, когда он больше не ограничен в доставляющем проводнике. Устройство обеспечивает сведение к минимуму количества участков абляции в аорте, сокращение вероятности возникновения спазма или стеноза артерии, обеспечивает устойчивое ...

Подробнее
30-07-2020 дата публикации

Номер: RU2017113694A3
Автор:
Принадлежит:

Подробнее
17-10-2019 дата публикации

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ И ЭЛЕКТРОХИРУРГИЧЕСКИЙ АППАРАТ ДЛЯ ПРИМЕНЕНИЯ НА БИОЛОГИЧЕСКОЙ ТКАНИ

Номер: RU2703501C2

Изобретение относится к медицинской технике, а именно к электрохирургическому инструменту, предназначенному, в частности, для аргоно-плазменной коагуляции и содержащему рукоятку, наружный стержень, охватывающий электрод и/или внутренний стержень и удерживаемый в рукоятке, и приводной механизм на рукоятке для приведения в движение наружного стержня в осевом направлении относительно электрода и/или внутреннего стержня. Наружный стержень и внутренний стержень и/или электрод механически соединены между собой на дистальном концевом участке наружного стержня таким образом, что внутренний стержень и/или электрод может изгибаться под углом при движении наружного стержня относительно внутреннего стержня и/или электрода. 15 з.п. ф-лы, 11 ил.

Подробнее
20-11-2014 дата публикации

НЕРВЫ, ПОДВЕРГАЮЩИЕСЯ ЦЕЛЕВОЙ АБЛЯЦИИ, В НИЖНЕЙ ПОЛОЙ ВЕНЕ И/ИЛИ БРЮШНОЙ АОРТЕ РЯДОМ С НИМИ ДЛЯ ЛЕЧЕНИЯ ГИПЕРТЕНЗИИ

Номер: RU2013121593A
Принадлежит:

... 1. Способ лечения пациента, включающий следующие этапы:введение абляционного катетера в тело пациента; и,абляция ткани в целевом местонахождении, при которой целевое местонахождение находится на пересечении почечной артерии и брюшной аорты или рядом с ним, с тем, чтобы денервировать почечную артерию.2. Способ по п.1, при котором целевое местонахождение находится в брюшной аорте вблизи находящейся выше точки разветвления брюшной аорты и левой почечной артерии.3. Способ по п.1, при котором целевое местонахождение находится в брюшной аорте вблизи находящейся выше точки разветвления брюшной аорты и правой почечной артерии.4. Способ по п.1, при котором целевое местонахождение находится в брюшной аорте вблизи устья брюшной аорты и правой почечной артерии.5. Способ по п.1, при котором целевое местонахождение находится в брюшной аорте вблизи устья брюшной аорты и левой почечной артерии.6. Способ по п.1, при котором абляционный катетер способен подвергать ткань абляции с использованием радиочастотной ...

Подробнее
28-09-2018 дата публикации

ПРЕОБРАЗУЕМЫЙ КОРЗИНЧАТЫЙ КАТЕТЕР

Номер: RU2017110139A
Принадлежит:

Подробнее
02-12-2020 дата публикации

Conductive member for use in radiofrequency ablation

Номер: GB0002584278A
Принадлежит:

A flexible skin conforming conductive member 1 for use in radiofrequency ablation comprising a conductive layer 4 over a conductive skin contact layer 5, both layers 4&5 being conductive to DC electrical signals. Preferably, the skin contact layer 5 comprises a gel layer of hydrogel. Conductive layer 4 may comprise a conductive plastic material, such as a carbon-loaded polymer mix. Conductive member 1 may be a conductive pad. Skin contact layer 5 may have a maximum volume resistivity of 2500 ohm cm at a frequency of less than 5Hz. Conductive member 1 may comprise a foam layer 2 over the conductive layer 4 on the side of the conductive layer 4 opposite to the skin contact layer 5. Also, a radio frequency ablation system comprising a conductive member 1, an electrode and a radio-frequency source to generate a signal with a radiofrequency component and coupled to the electrode and the conductive member 1 to apply the signal between the electrode and the conductive member 1. Preferably, the ...

Подробнее
04-01-2012 дата публикации

Apparatus and method for detaching solid tumours

Номер: GB0201120009D0
Автор:
Принадлежит:

Подробнее
15-01-2003 дата публикации

DEVICE FOR ENDOMITRIALEN ABLATION

Номер: AT0000230284T
Принадлежит:

Подробнее
07-01-2016 дата публикации

Multi-electrode catheter assemblies for renal neuromodulation and associated systems and methods

Номер: AU2013260174B2
Принадлежит:

Catheter apparatuses and systems for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function.

Подробнее
03-12-2020 дата публикации

Electrosurgical method and apparatus with varying stiffness capture components

Номер: AU2016306667B2
Принадлежит: FB Rice Pty Ltd

An electrosurgical apparatus and method for cutting and resecting a tissue volume is described. The apparatus includes one or more electrosurgical filaments and capture components deployable by forward extension at or near a forward tip of an elongated shaft of the apparatus to form an elliptical path that defines, with the other capture components, a spheroidal receptacle configured to surround a tissue volume for resection. The elliptical path is formable by a first extension followed by a second extension, said first extension having a first axial component and a radial expansion component, and said second extension having a second axial component and a radial contraction component, where at least one of the capture components is of varying stiffness.

Подробнее
23-05-1996 дата публикации

Endometrial ablation apparatus and method

Номер: AU0000668943B2
Принадлежит:

Подробнее
07-11-1996 дата публикации

Apparatus for cardiac mapping and ablation

Номер: AU0002360695A
Принадлежит:

Подробнее
21-05-2015 дата публикации

CATHETER WITH MULTIPLE ELECTRODE ASSEMBLIES FOR USE AT OR NEAR TUBULAR REGIONS OF THE HEART

Номер: AU2015202258A1
Принадлежит:

A catheter with ablation and potential sensing capabilities is adapted for outer circumferential contact with an opening of a tubular region and inner circumferential contact within the tubular region. The catheter has a proximal electrode assembly and a distal electrode assembly for ablation of an ostium and potential sensing inside the pulmonary vein so that it is possible to obtain ECG signals inside a pulmonary vein when ablating around the ostium. The distal electrode assembly has an elongated member defining a longitudinal axis and a plurality of spines surrounding the member and converging at their proximal and distal ends, where each spine has at least one electrode and a curvature so that the spine bows radially outwardly from the member. The proximal electrode assembly has a proximal electrode assembly has an elongated member configured with a generally radial portion and a generally circular portion generally transverse to the catheter axis, where the generally circular portion ...

Подробнее
30-03-2017 дата публикации

DUAL MULTIRAY ELECTRODE CATHETER

Номер: AU2016216557A1
Принадлежит: Fisher Adams Kelly Callinans

This disclosure is directed to a catheter having a dual multiray electrode assembly at the distal end of the catheter body formed from a plurality of spines with electrodes and a dual multiray electrode assembly at the distal end of the catheter body. The dual multiray electrode assembly may have a proximal multiray array and a distal multiray array, each array comprising a plurality of spines connected at one end. The dual multiray electrode assembly may have an expanded configuration and a collapsed configuration wherein the spines are arranged generally along a longitudinal axis of the catheter body. 00 a I La C-4 fn ...

Подробнее
04-08-2016 дата публикации

LOW PROFILE ELECTRODE ASSEMBLY

Номер: AU2016204855A1

Abstract There is disclosed a tissue electrode assembly that includes a membrane configured to form an expandable, conformable body that is deployable in a patient. The assembly further includes a flexible circuit positioned on a surface of the membrane and comprising at least one base substrate layer, at least one insulating layer and at least one planar conducting layer. An electrically-conductive electrode covers at least a portion of the flexible circuit and a portion of the surface of the membrane not covered by the flexible circuit, wherein the electrically-conductive electrode is foldable upon itself with the membrane to a delivery conformation having a diameter suitable for minimally-invasive delivery of the assembly to the patient.

Подробнее
30-11-2019 дата публикации

ENHANCED LARGE-DIAMETER BALLOON CATHETER

Номер: CA0003044182A1

A balloon catheter includes a shaft, a balloon made of an expandable membrane, a flexible substrate, one or more electrodes, and one or more radiopaque flags. The shaft is configured for insertion into a heart of a patient. The balloon is fitted at a distal end of the shaft. The flexible substrate is disposed on the membrane. The one or more electrodes are disposed over the flexible substrate and have a fishbone configuration. The one or more radiopaque flags are coupled to the expandable membrane, wherein the one or more radiopaque flags include a serpentine pattern so that the radiopaque flags fold in conformance with flexible substrate as the expandable membrane is collapsed into a compressed or folded configuration.

Подробнее
15-11-2018 дата публикации

NETWORKED THERMISTORS

Номер: CA0003004866A1
Принадлежит:

A medical catheter has an inflatable balloon assembly on its distal portion and a plurality of ablation electrodes disposed on the surface of the balloon assembly. Conductors extending through the shaft supply the ablation electrodes with electrical power when connected to a power source. A plurality of thermistors on the balloon assembly are connected to the conductors to form a resistive network, and a plurality of access points on the conductors are provided for obtaining electrical measurements and analyzing the measurements to determine respective resistances of the thermistors.

Подробнее
16-02-2017 дата публикации

ELECTROSURGICAL GENERATOR AND METHODS

Номер: CA0002995615A1
Принадлежит:

The disclosed technology is directed to a RF power generator and feedback control system used to regulate the electrical power delivered to a cutting filament (i.e., a cutting electrode) of an electrosurgical instrument. The electrosurgical instrument uses the delivered energy to form a cutting arc for ablating a tissue mass to access a target tissue therein. The instrument forms a basket-like receptacle around the target tissue to excise the target tissue from the ablated tissue mass. As the instrument forms the receptacle, the length of exposed filament ablating the tissue changes. To this end, the RF power generator described herein is configured to vary the total power delivered during the deployment of the instrument based on a measurement of output power derived from a differential phase angle between a current sense output and a voltage sense output, in some embodiments, to maintain a uniform power density along the length of exposed filament.

Подробнее
19-01-2006 дата публикации

MINIMALLY INVASIVE SURGICAL CLAMP HAVING TREATMENT ELEMENTS

Номер: CA0002573181A1
Принадлежит:

Подробнее
28-04-2016 дата публикации

BASKET CATHETER WITH MICROELECTRODE ARRAY DISTAL TIP

Номер: CA0002910626A1
Принадлежит:

A catheter adapted for greater mapping resolution and location precision has a basket-shaped, high density electrode assembly for large-area mapping, and an integrated distal tip providing an array of ultra-high density microelectrodes for acute focal mapping. The basket-shaped electrode assembly 18 has a plurality of electrode-carrying spines and the distal tip has a nonmetallic, electrically insulating substrate body with indentations in which microelectrodes are positioned in a manner that the outer surface is generally flush with the outer surface of the substrate body to present a generally smooth, atraumatic distal tip profile.

Подробнее
09-11-2013 дата публикации

ABLATION TARGETING NERVES IN OR NEAR THE INFERIOR VENA CAVA AND/OR ABDOMINAL AORTA FOR TREATMENT OF HYPERTENSION

Номер: CA0002815317A1
Принадлежит:

A method for the treatment of a patient for the purpose of lowering blood pressure and/or treating other medical conditions such as cardiac arrhythmias. A catheter having an ablation element is placed inside the body of a patient and is directed to a targeted location either on in the abdominal aorta where the right or left renal arteries branch from the aorta at or near the superior junction or ostia or on the inside of the inferior vena cava near the junction with the right renal vein or in the left renal vein at a position spatially near where the left renal artery branches from the abdominal aorta. Catheters designed for use in the method where these targeted locations are also disclosed and claimed.

Подробнее
10-01-2013 дата публикации

Methods and apparatus for performing a non-continuous circumferential treatment of a body lumen

Номер: US20130012867A1
Принадлежит: Ardian Inc

Methods and apparatus are provided for non-continuous circumferential treatment of a body lumen. Apparatus may be positioned within a body lumen of a patient and may deliver energy at a first lengthwise and angular position to create a less-than-full circumferential treatment zone at the first position. The apparatus also may deliver energy at one or more additional lengthwise and angular positions within the body lumen to create less-than-full circumferential treatment zone(s) at the one or more additional positions that are offset lengthwise and angularly from the first treatment zone. Superimposition of the first treatment zone and the one or more additional treatment zones defines a non-continuous circumferential treatment zone without formation of a continuous circumferential lesion. Various embodiments of methods and apparatus for achieving such non-continuous circumferential treatment are provided.

Подробнее
28-02-2013 дата публикации

Access and tissue modification systems and methods

Номер: US20130053851A1
Принадлежит: Individual

Described herein are methods and systems for precisely placing and/or manipulating devices within the body by first positioning a guidewire or pullwire. The device to be positioned within the body is coupled to the proximal end of the guidewire, and the device is pulled into the body by pulling on the distal end of the guidewire that extends from the body. The device may be bimanually manipulated by pulling the guidewire distally, and an attachment to a device that extends proximally, allowing control of both the proximal and the distal ends. In this manner devices (and particularly implants such as innerspinous distracters, stimulating leads, and disc slings) may be positioned and/or manipulated within the body. Guidewire exchange systems, devices and methods are also described. A guidewire may be exchanged between different surgical devices and may be releaseably or permanently coupled.

Подробнее
05-09-2013 дата публикации

Off-wall and contact electrode devices and methods for nerve modulation

Номер: US20130231659A1
Принадлежит: Boston Scientific Scimed Inc

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a system for nerve modulation. The system may include an elongate shaft and a nerve modulation assembly disposed at the distal end of the shaft. The nerve modulation assembly may have a collapsed configuration and an expanded configuration. The nerve modulation assembly may include an inner basket and an outer basket. The inner basket may include a plurality of electrode struts. Each electrode strut may include an electrode. The outer basket may include a plurality of spacer struts.

Подробнее
23-01-2014 дата публикации

Ablation catheter with flexible tip

Номер: US20140025068A1

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

Подробнее
02-01-2020 дата публикации

Adjustable clamp systems and methods

Номер: US20200000511A1
Принадлежит: Atricure Inc

Tissue treatment systems include an actuator handle assembly coupled with a clamp assembly having a first jaw mechanism and a second jaw mechanism. A first jaw mechanism includes a first flexible boot, a first flexible ablation member coupled with the first flexible boot, and a first rotatable jawbone disposed within the first flexible boot. A second jaw mechanism comprises a second flexible boot, a second flexible ablation member coupled with the second flexible boot, and a second rotatable jawbone disposed within the second flexible boot.

Подробнее
02-01-2020 дата публикации

DIGESTIVE-TRACT TREATMENT METHOD

Номер: US20200000513A1
Автор: MOTAI Kosuke
Принадлежит: OLYMPUS CORPORATION

Provided is a digestive-tract treatment method including: pulling, inside a digestive tract (A), an end portion of a first wall portion (A) positioned at a rim of a treatment target site (B), and moving the first wall portion (A) to a position on a second wall portion (A) on an opposite side of the treatment target site (B) from the first wall portion (A); and joining the first wall portion (A) and the second wall portion (A) in a state in which the first wall portion (A) and the second wall portion (A) are layered. 1. A digestive-tract treatment method comprising:pulling, inside a digestive tract, an end portion of a first wall portion positioned at a rim of a treatment target site, and moving the first wall portion to a position on a second wall portion on an opposite side of the treatment target site from the first wall portion; andjoining the first wall portion and the second wall portion in a state in which the first wall portion and the second wall portion are layered.2. A digestive-tract treatment method according to claim 1 ,wherein the first wall portion is positioned on an opposite side of the treatment target site from the anus, andthe second wall portion is positioned closer to the anus than the treatment target site is.3. A digestive-tract treatment method according to claim 2 , wherein by pulling both the first wall portion and a third wall portion claim 2 , which forms the treatment target site claim 2 , the first wall portion is moved to a position at which the first wall portion is placed along the second wall portion.4. A digestive-tract treatment method according to claim 3 , wherein the first wall portion and the second wall portion are joined claim 3 , and claim 3 , subsequently claim 3 , at least a portion of the first wall portion and the third wall portion is cut between the position at which the first wall portion and the second wall portion are joined and the end portion of the first wall portion.5. A digestive-tract treatment method ...

Подробнее
10-01-2019 дата публикации

Capsulotomy Cartridge

Номер: US20190008681A1
Принадлежит:

A cartridge of a surgical device is disclosed that includes a capsulotomy device and a shell structure. The capsulotomy device includes a suction cup, a chamber configured to provide suction to the suction cup, and a cutting element that can be put into contact with a lens capsule of an eye to excise a portion of tissue of the lens capsule. Both the suction cup and cutting element are collapsible. The shell structure is configured for housing the capsulotomy device. The housing of the shell structure can contain the suction cup, the chamber, and the cutting element of the capsulotomy device to protect the device before it is used in performing a capsulotomy. 1. A cartridge of a surgical device , the cartridge comprising: a suction cup,', 'a chamber in fluid communication with the suction cup, the chamber configured to provide suction to the suction cup via a suction mechanism operable through a handpiece, and', 'a cutting element coupled to the suction cup in a position such that the cutting element can be put into contact with a lens capsule of an eye to excise a portion of tissue of the lens capsule, the suction cup and cutting element being collapsible; and, 'a capsulotomy device comprisinga shell structure configured for housing the capsulotomy device within, the shell structure comprising a housing having an outer surface configured to contain the suction cup, the chamber, and the cutting element of the capsulotomy device within the outer surface to protect the capsulotomy device before use in performing a capsulotomy.2. The cartridge of claim 1 , wherein the cartridge is reversibly attachable to the handpiece of the surgical device claim 1 , and wherein the cartridge is positionable on the handpiece such that claim 1 , when the surgical device is in use for performing the capsulotomy claim 1 , suction is provided to the suction cup via the suction mechanism operable through the handpiece.3. The cartridge of claim 1 , further comprising a suction generator ...

Подробнее
24-01-2019 дата публикации

CATHETER SYSTEM AND METHODS OF MEDICAL USES OF SAME, INCLUDING DIAGNOSTIC AND TREATMENT USES FOR THE HEART

Номер: US20190021673A1
Принадлежит:

The present invention includes systems, devices and methods for treating and/or diagnosing a heart arrhythmia, such as atrial fibrillation. Specifically, the present invention provides a system including a diagnostic catheter and an ablation catheter. The diagnostic catheter includes a shaft, multiple dipole mapping electrodes and multiple ultrasound transducers. The ablation catheter is slidingly received by the diagnostic catheter shaft. 1. (canceled)2. A catheter system , comprising: an elongate shaft comprising a distal end;', 'an expandable assembly mounted to the elongate shaft, the expandable assembly comprising multiple splines and configured to transition from a compacted state to an expanded state;', 'a plurality of electrodes coupled to the multiple splines of the expandable assembly, each electrode configured to emit electric signals and record electric signals; and', 'a plurality of ultrasound transducers coupled to the multiple splines of the expandable assembly;, 'a diagnostic catheter comprisinga distance measurement assembly configured to drive the plurality of ultrasound transducers to produce anatomical geometry data, and including data representing a distance between each ultrasound transducer of the plurality of ultrasound transducers and a tissue surface orthogonal to each ultrasound transducer; and measure spacing between two or more of the electrodes based on the recorded electric signals and to determine a geometric configuration of one or more of the multiple splines based on the measured electrode spacing; and', 'create a three-dimensional anatomical map based on the produced anatomical geometry data, create electrical information based on the recorded electric signals, and display the electrical information in relation to the three-dimensional anatomical map,', the electrical information is further based on the determined geometric configuration of the one or more of the multiple splines, and/or', 'the anatomical geometry data is based on ...

Подробнее
17-04-2014 дата публикации

Access and tissue modification systems and methods

Номер: US20140107709A1
Принадлежит: Individual

Described herein are methods and systems for precisely placing and/or manipulating devices within the body by first positioning a guidewire or pullwire. The device to be positioned within the body is coupled to the proximal end of the guidewire, and the device is pulled into the body by pulling on the distal end of the guidewire that extends from the body. The device may be bimanually manipulated by pulling the guidewire distally, and an attachment to a device that extends proximally, allowing control of both the proximal and the distal ends. In this manner devices (and particularly implants such as innerspinous distracters, stimulating leads, and disc slings) may be positioned and/or manipulated within the body. Guidewire exchange systems, devices and methods are also described. A guidewire may be exchanged between different surgical devices and may be releaseably or permanently coupled.

Подробнее
22-01-2015 дата публикации

Multi-Electrode Catheter Assemblies for Renal Neuromodulation and Associated Systems and Methods

Номер: US20150025527A1
Принадлежит:

Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function. 1. A catheter apparatus , comprising:an elongated tubular shaft having a proximal portion and a distal portion; and a control member comprising a pre-formed helical shape, wherein the control member is a tubular structure having a lumen therethrough and is composed of a nitinol multifilar stranded wire; and', 'a plurality of energy delivery elements carried by the support structure,, 'a therapeutic assembly disposed at the distal portion of the elongated shaft and adapted to be located at a target location within a renal artery of a human patient, the therapeutic assembly including a support structure comprising—'}wherein the elongated tubular shaft and the therapeutic assembly together define therethrough a guide wire lumen configured to slidably receive a medical guide wire, andwherein axial movement of the guide wire relative to the therapeutic assembly transforms the support structure between (a) a low-profile delivery configuration and (b) a deployed configuration tending to assume the pre-formed helical shape of the control member.2. The catheter ...

Подробнее
23-01-2020 дата публикации

ELECTROSURGICAL DEVICE

Номер: US20200022746A1
Автор: Latterell Scott T.
Принадлежит:

An electrosurgical assembly is disclosed, the assembly having two, three or more electrodes configured to provide advantageous tissue removal and precision for conducting electrosurgical procedures, including improved ablation and coagulation of tissue. The electrodes are configured and arranged so that energy can be applied in a highly uniform and precise fashion, depending upon the application. In addition, the electrosurgical assembly allows flexibility in use by, in some embodiments, allowing selective switching of the active and return electrodes, and also selective switching between ablation and coagulation modes. In certain embodiments the invention includes one or more electrodes having the ability to undergo changes in shape. An electrosurgical apparatus comprising:a first electrode having a proximal end and a distal end;a second electrode at least partially disposed proximate to the distal end of the first electrode; anda third electrode at least partially disposed proximate to the proximal end of the first electrode.21. The electrosurgical apparatus of claim , wherein the first electrode is positioned substantially intermediate the second and third electrodes.31. The electrosurgical apparatus of claim , wherein the first electrode is separated from the second and third electrodes by at least one insulator.41. The electrosurgical apparatus of claim , wherein the first electrode is generally axially symmetric in shape.51. The electrosurgical apparatus of claim , wherein at least one of the second electrode and third electrode is generally axially symmetric in shape.61. The electrosurgical apparatus of claim wherein the first electrode comprises a conductive lattice.71. The electrosurgical apparatus of claim , further comprising a manipulation means in mechanical communication with the at least one first electrode , the manipulation means configured to apply a mechanical force to change the shape of the first electrode.8. The electrosurgical apparatus of ...

Подробнее
01-02-2018 дата публикации

MUCOSA DISSECTOR

Номер: US20180028259A1
Автор: Shao Ke, Zhang Jianguo
Принадлежит:

A mucosa dissector comprises an outer sleeve assembly, an electric loop (), a sliding ring () and a pulling cable (). At a portion of the electric loop () is provided an insulating layer (), and the rest of the electric loop is exposed so as to dissect the mucosa. The sliding ring () is provided on the outer sleeve assembly, and is movable axially relative to the outer sleeve assembly; an electrode plug () is provided on the sliding ring (). The pulling cable () is movable axially to be inserted into the outer sleeve assembly. One end of the pulling cable () is connected with the electrical loop (), and the other end is electrically connected with the electrode plug () on the sliding ring (). The mucosa dissector can contact the tissue easily and be positioned accurately when used to dissect the submucosa tissue, which facilitates the operation, and avoids the phenomenon of burning out the healthy tissues. 1. A mucosa dissector , wherein , it comprises:an outer sleeve assembly;{'b': 2', '1, 'an electrical loop (), a portion of which is provided with an insulating layer () and the rest of which is in an exposed status so as to dissect the mucosa;'}{'b': 8', '8', '7', '8, 'a sliding ring (), which is provided on the outer sleeve assembly, the sliding ring () is movable axially relative to the outer sleeve assembly, and an electrode plug () is provided on the sliding ring (); and'}{'b': 4', '4', '2', '4', '7', '8, 'a pulling cable (), which is movable axially to be inserted into the outer sleeve assembly, one end of the pulling cable () is connected with the electric loop (), and the other end of the pulling cable () is electrically connected with the electrode plug () on the sliding ring ().'}2356935596. The mucosa dissector of claim 1 , wherein the outer sleeve assembly comprises a tube sheath () claim 1 , a protective sleeve () claim 1 , a rotating cap () and a core rod () claim 1 , and the tube sheath () is connected with one end of the protective sleeve () claim 1 ...

Подробнее
08-02-2018 дата публикации

ABLATION CABLE ASSEMBLIES AND A METHOD OF MANUFACTURING THE SAME

Номер: US20180036069A1
Принадлежит:

A cable assembly includes a rigid portion, a flexible central portion, and a radiating portion. The rigid portion is configured to couple to a source of electrosurgical energy and to prevent fluid ingress towards the source of electrosurgical energy. The flexible central portion extends from the rigid portion and includes an inner conductor, a dielectric disposed about the inner conductor, and a conductive braid disposed about the dielectric. The radiating portion extends from the central portion and is configured to deliver electrosurgical energy to tissue. 1. A cable assembly comprising:a rigid portion configured to couple to a source of electrosurgical energy and prevent fluid ingress; an inner conductor;', 'a dielectric disposed about the inner conductor; and', 'a conductive braid disposed about the dielectric; and, 'a flexible central portion extending from the rigid portion, the central portion includinga radiating portion extending from the central portion configured to deliver electrosurgical energy to tissue, the radiating portion including a first step and a second step.2. The cable assembly according to claim 1 , wherein the entire cable assembly has a diameter of in the range of 0.01 inches to about 0.5 inches.3. The cable assembly according to claim 1 , wherein the first step is formed from a first dielectric tube and a second dielectric tube and the second step is formed from the second dielectric tube.4. The cable assembly according to claim 3 , wherein a combined thickness of the first and second dielectric tubes is less than the thickness of the dielectric.5. The cable assembly according to claim 3 , wherein the second dielectric tube extends proximally from the second step to overlap the first dielectric tube and the distal end of the dielectric to seal a first step down between the first step and the dielectric.6. The cable assembly according to claim 3 , wherein the second dielectric tube extends distally from a distal end of the conductive braid ...

Подробнее
08-02-2018 дата публикации

ABLATION CABLE ASSEMBLIES AND A METHOD OF MANUFACTURING THE SAME

Номер: US20180036070A1
Принадлежит:

A cable assembly includes a rigid portion, a flexible central portion, and a radiating portion. The rigid portion is configured to couple to a source of electrosurgical energy and to prevent fluid ingress towards the source of electrosurgical energy. The flexible central portion extends from the rigid portion and includes an inner conductor, a dielectric disposed about the inner conductor, and a conductive braid disposed about the dielectric. The radiating portion extends from the central portion and is configured to deliver electrosurgical energy to tissue. 1. A cable assembly comprising:a rigid portion configured to couple to a source of electrosurgical energy and prevent fluid ingress, the rigid portion including a rigid tube disposed about the dielectric and in electrical communication with the conductive braid; an inner conductor;', 'a dielectric disposed about the inner conductor; and', 'a conductive braid disposed about the dielectric; and, 'a flexible central portion extending from the rigid portion, the central portion includinga radiating portion extending from the central portion configured to deliver electrosurgical energy to tissue.2. The cable assembly according to claim 1 , wherein the entire cable assembly has a diameter of in the range of 0.01 inches to about 0.5 inches.3. The cable assembly according to claim 1 , wherein the conductive braid is in tension between the rigid portion and the radiating portion.4. The cable assembly according to claim 2 , wherein the rigid tube is in intimate contact with the dielectric to prevent fluid ingress towards a proximal portion of the cable assembly.5. The cable assembly according to claim 2 , wherein a proximal end of the inner conductor extends from the rigid tube.6. The cable assembly according to claim 2 , wherein a distal portion of the rigid tube fixes the position of a proximal end of the conductive braid relative to the dielectric.7. The cable assembly according to claim 6 , wherein the distal portion ...

Подробнее
07-02-2019 дата публикации

TISSUE ABLATION AND MONITORING THEREOF

Номер: US20190038350A1
Принадлежит:

An ablation catheter including an elongate shaft, an inflatable balloon positioned at a distal region of the elongate shaft, a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon, a first ultrasound transducer disposed outside of the inflatable balloon, and a flexible circuit. The flexible circuit includes a first conductor and a second conductor and is disposed outside of and carried by the outer surface of the inflatable balloon. The first conductor is in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer. 1. An ablation catheter , comprising:an elongate shaft;an inflatable balloon positioned at a distal region of the elongate shaft;a first ablation electrode disposed outside of and carried by an outer surface of the inflatable balloon;a first ultrasound transducer disposed outside of the inflatable balloon; anda flexible circuit, including a first conductor and a second conductor, disposed outside of and carried by the outer surface of the inflatable balloon, the first conductor in electrical communication with the first ablation electrode, and the second conductor in electrical communication with the first ultrasound transducer.2. The ablation catheter of claim 1 , wherein the first ultrasound transducer is positioned within a periphery of the first ablation electrode.3. The ablation catheter of claim 1 , wherein the first ultrasound transducer is disposed under the first ablation electrode.4. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound receiver.5. The ablation catheter of claim 1 , wherein the first ultrasound transducer is an ultrasound emitter.6. The ablation catheter of claim 1 , wherein the first ultrasound transducer is at least partially surrounded by an insulation layer.6. The ablation catheter of claim 1 , further comprising:a second ultrasound transducer ...

Подробнее
06-02-2020 дата публикации

Ablation targeting nerves in or near the inferior vena cava and/or abdominal aorta for treatment of hypertension

Номер: US20200038105A1
Принадлежит: Biosense Webster Israel Ltd

A method for the treatment of a patient for the purpose of lowering blood pressure and/or treating other medical conditions such as cardiac arrhythmias. A catheter having an ablation element is placed inside the body of a patient and is directed to a targeted location either on in the abdominal aorta where the right or left renal arteries branch from the aorta at or near the superior junction or ostia or on the inside of the inferior vena cava near the junction with the right renal vein or in the left renal vein at a position spatially near where the left renal artery branches from the abdominal aorta. Catheters designed for use in the method where these targeted locations are also disclosed and claimed.

Подробнее
15-02-2018 дата публикации

ELECTROSURGICAL (RF) MEDICAL INSTRUMENTS FOR CUTTING AND COAGULATING TISSUE

Номер: US20180042658A1
Принадлежит:

An electrosurgical device is disclosed. The electrosurgical device includes a handle, a shaft extending distally from the handle, and an end effector coupled to a distal end of the shaft. The end effector comprises a first electrode and a second electrode. The second electrode includes a first position and a second position. The second electrode is configured to move from the first position to the second position when a force is applied to the end effector by a tissue section. The first electrode and the second electrode define a treatment area when the second electrode is in the second position. 1. An electrosurgical instrument comprising:a pencil-grip handle;a shaft coupled to the pencil grip handle; and a body;', 'a source electrode; and', 'one or more return electrodes,, 'an end effector coupled to the shaft, wherein the end effector compriseswherein the source electrode and the one or more return electrodes are configured to provide an electrosurgical signal to a tissue.2. The electrosurgical instrument of claim 1 , wherein the electrosurgical signal comprises a radio frequency (RF) signal.3. The electrosurgical instrument of claim 1 , wherein the pencil-grip handle comprises a power source and is cordless.4. The electrosurgical instrument of claim 1 , wherein the source electrode is disposed on a center portion of the body and the one or more return electrodes are disposed on a lateral portion of the body.5. The electrosurgical instrument of claim 1 , wherein the body defines an oval shape.6. The electrosurgical instrument of claim 1 , wherein the one or more return electrodes each comprise a first return electrode and a second return electrode.7. The electrosurgical instrument of claim 6 , further comprising an electrosurgical generator coupled to the end effector claim 6 , wherein the electrosurgical generator is configured to produce the electrosurgical signal comprising a first phase claim 6 , a second phase claim 6 , and a third phase claim 6 , wherein ...

Подробнее
03-03-2022 дата публикации

FLEXIBLE HIGH-DENSITY MAPPING CATHETER

Номер: US20220061727A1
Принадлежит:

Aspects of the present disclosure are directed to flexible high-density mapping catheters with a planar array of high-density mapping electrodes near a distal tip portion. These mapping catheters may be used to detect electrophysiological characteristics of tissue in contact with the electrodes, and may be used to diagnose cardiac conditions, such as cardiac arrhythmias for example. 120-. (canceled)21. A planar array catheter comprising:an elongated catheter shaft defining a catheter longitudinal axis extending between a proximal end and a distal end; anda flexible, planar array at the distal end of the catheter shaft, the planar array configured to conform to tissue, and including two or more arms extending substantially parallel with the longitudinal axis and lying in a common plane, each of the arms having a plurality of electrodes mounted thereon; detect an electrophysiological characteristic of tissue in contact with the planar array;', 'output signals indicative of the detected electrophysiological characteristic of the tissue; and', 'selectively ablate the tissue based at least in part on the detected electrophysiological characteristic of the tissue., 'wherein the plurality of electrodes are configured to22. The planar array catheter of claim 21 , wherein the plurality of electrodes are equally spaced along both a length of each arm and across adjacent arms.23. The planar array catheter of claim 21 , wherein the plurality of electrodes are further configured to selectively ablate the tissue using unipolar ablation.24. The planar array catheter of claim 21 , wherein the plurality of electrodes are further configured to selectively ablate the tissue using bipolar ablation.25. The planar array catheter of claim 21 , wherein three or more electrodes of the plurality of electrodes form a clique claim 21 , the clique configured to sample electrical characteristics of a particular point of the contacted tissue in at least two substantially transverse directions ...

Подробнее
04-03-2021 дата публикации

Mapping catheter with flex panel electrode assembly

Номер: US20210059745A1
Автор: Debby E. Highsmith
Принадлежит: Biosense Webster Israel Ltd

An apparatus includes a catheter assembly and an end effector. The catheter assembly includes an outer sheath with a distal end. The end effector is associated with a distal end of the catheter assembly. The end effector includes a panel assembly with microelectrodes for electrophysiological (EP) mapping. The microelectrodes are configured in a matrix within the panel assembly and provide multiple points of contact with the target tissue for EP mapping. The panel assembly can transition between a first contracted state and a second expanded state. The panel assembly can fit within the outer sheath in the first state. The panel assembly can expand outwardly away from a longitudinal axis defined by the catheter assembly in the second state once exposed distally relative to the distal end of the outer sheath.

Подробнее
04-03-2021 дата публикации

Systems and methods of ablating cardiac tissue

Номер: US20210059751A1
Принадлежит: Biosense Webster Israel Ltd

The subject of this disclosure includes an apparatus for visually supporting a tissue ablation procedure, including a display comprising a user interface; and at least one processor in communication with the display, the at least one processor configured to control one or more of a plurality of electrodes of a radiofrequency balloon catheter to ablate organ tissues of one or more targeted pulmonary veins; determine a characteristic, based on ablation parameters of the radiofrequency balloon catheter, of pulmonary vein isolation (PVI) success rate; and present, on the display, visual information corresponding to each electrode for an indication, based on the characteristic, for PVI success rate.

Подробнее
09-03-2017 дата публикации

Ablation catheter with flexible electrode

Номер: US20170065341A1

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body.

Подробнее
24-03-2022 дата публикации

ENT INSTRUMENT WITH EXPANDABLE ABLATION FEATURE

Номер: US20220087739A1
Принадлежит:

A surgical instrument includes a sheath and an ablation catheter disposed within the sheath. The sheath is configured to be inserted into a cavity of a patient's head. The ablation catheter extends along a longitudinal axis and includes at least one expandable ablation member configured to selectively radially expand outwardly from a non-expanded state to an expanded state for selectively ablating tissue within the patient's head. The ablation catheter is selectively translatable relative to the sheath between a proximal retracted position and a distal extended position. In the retracted position, the at least one expandable ablation member is housed within the sheath to thereby prevent the at least one expandable ablation member from radially expanding outwardly. In the extended position, the at least one expandable ablation member is exposed from the sheath to thereby permit the at least one expandable ablation member to radially expand outwardly for contacting tissue. 1. A surgical instrument comprising:(a) a sheath configured to be inserted into a cavity of a patient's head; and(b) an ablation catheter disposed within the sheath, wherein the ablation catheter extends along a longitudinal axis and includes at least one expandable ablation member configured to selectively radially expand outwardly from a non-expanded state to an expanded state for selectively ablating tissue within the patient's head,wherein the ablation catheter is selectively translatable relative to the sheath between a proximal retracted position in which the at least one expandable ablation member is housed within the sheath to thereby prevent the at least one expandable ablation member from radially expanding from the non-expanded state to the expanded state, and a distal extended position in which the at least one expandable ablation member is exposed from the sheath to thereby permit the at least one expandable ablation member to radially expand from the non-expanded state to the expanded ...

Подробнее
05-03-2020 дата публикации

Ablation catheters

Номер: US20200069364A1
Принадлежит: Individual

Cardiac tissue ablation catheters including an inflatable and flexible toroidal or spherically shaped balloon disposed at a distal region of an elongate member, a flexible circuit carried by an outer surface of the balloon, the flexible circuit including, a plurality of flexible branches conforming to the radially outer surface of the balloon, each of the plurality of flexible branches including a substrate, a conductive trace carried by the substrate, and an ablation electrode carried by the substrate, the ablation electrode in electrical communication with the conductive trace, and an elongate shaft comprising a guidewire lumen extending in the elongate member and extending from a proximal region of the inflatable balloon to distal region of the inflatable balloon and being disposed within the inflatable balloon, wherein a distal region of the elongate shaft is secured directly or indirectly to the distal region of the inflatable balloon.

Подробнее
19-03-2015 дата публикации

Ablation balloon with vapor deposited cover layer

Номер: US20150080883A1
Принадлежит: Boston Scientific Scimed Inc

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable balloon may be coupled to the catheter shaft. The balloon may be capable of shifting between a folded configuration and an expanded configuration. A plurality of elongate electrode assemblies may be disposed on the balloon. A cover layer may be deposited on the electrode assemblies. Portions of the electrode assemblies may be free of the cover layer.

Подробнее
19-03-2015 дата публикации

Electrosurgical (rf) medical instruments for cutting and coagulating tissue

Номер: US20150080891A1
Принадлежит: Ethicon Endo Surgery Inc

An electrosurgical device is disclosed. The electrosurgical device includes a handle, a shaft extending distally from the handle, and an end effector coupled to a distal end of the shaft. The end effector comprises a first electrode and a second electrode. The second electrode includes a first position and a second position. The second electrode is configured to move from the first position to the second position when a force is applied to the end effector by a tissue section. The first electrode and the second electrode define a treatment area when the second electrode is in the second position.

Подробнее
14-03-2019 дата публикации

CATHETER SENSING AND IRRIGATING

Номер: US20190076190A1
Принадлежит:

Ablation systems of the present disclosure facilitate the safe formation of wide and deep lesions. For example, ablation systems of the present disclosure can allow for the flow of irrigation fluid and blood through an expandable ablation electrode, resulting in efficient and effective cooling of the ablation electrode as the ablation electrode delivers energy at a treatment site of the patient. Additionally, or alternatively, ablation systems of the present disclosure can include a deformable ablation electrode and a plurality of sensors that, in cooperation, sense the deformation of the ablation electrode, to provide a robust indication of the extent and direction of contact between the ablation electrode and tissue at a treatment site. 123-. (canceled)24. A catheter , comprising:an elongated shaft having a proximal end region and a distal end region;an irrigation element at the distal end region of the elongated shaft and positioned to direct irrigation fluid away from the distal end region of the elongated shaft; andan electrical energy delivery electrode at the distal end region of the elongated shaft and enveloping the irrigation element, the electrical energy delivery electrode comprises multiple struts that define a plurality of bounded cells,', 'the struts are configured to conduct and deliver electrical energy along a majority of their length,', 'the struts are movable relative to one another, and', 'at least a portion of the struts are in electrical communication with one another to form a single electrical conductor., 'wherein—'}25. The catheter of wherein the electrical energy delivery electrode comprises a braid.26. The catheter of wherein the electrical energy delivery electrode comprises a mesh.27. The catheter of wherein the struts are coupled to one another at joints.28. The catheter of wherein the struts are moveable relative to one another such that a radial dimension of the electrical energy delivery electrode increases as the struts move ...

Подробнее
23-03-2017 дата публикации

Electrosurgical device and methods

Номер: US20170079708A1
Принадлежит: Eximis Surgical Inc

A tissue segmentation device, controller, and methods therefore are disclosed. The device has an active electrode, a return electrode, a mechanical force application mechanism, voltage and current sensors, and a controller. The controller is configured to control a power output of the segmentation device. The controller has a processing component, responsive to the sensors, configured to execute the following: (a) derive a power factor of power applied to the at least one electrode; and (b) responsive to the deriving a power factor, assign a circuit status to a circuit comprising the at least one electrode. IF (PF ≈ 0 ) and ((Vrms/Irms)≧T), THEN the circuit status is “open”. IF (PF ≈ 0 ) and ((Vrms/Irms)<T), THEN the circuit status is “short”. PF is the power factor. T is a threshold value.

Подробнее
31-03-2022 дата публикации

ABLATION CABLE ASSEMBLIES AND A METHOD OF MANUFACTURING THE SAME

Номер: US20220096155A1
Принадлежит:

A cable assembly includes a rigid portion, a flexible central portion, and a radiating portion. The rigid portion is configured to couple to a source of electrosurgical energy and to prevent fluid ingress towards the source of electrosurgical energy. The flexible central portion extends from the rigid portion and includes an inner conductor, a dielectric disposed about the inner conductor, and a conductive braid disposed about the dielectric. The radiating portion extends from the central portion and is configured to deliver electrosurgical energy to tissue. 1. A cable assembly comprising:a rigid portion configured to couple to a source of electrosurgical energy and prevent fluid ingress, the rigid portion including a rigid tube disposed about the dielectric and in electrical communication with the conductive braid;{'claim-text': ['an inner conductor;', 'a dielectric disposed about the inner conductor; and', 'a conductive braid disposed about the dielectric; and'], '#text': 'a flexible central portion extending from the rigid portion, the central portion including:'}a radiating portion extending from the central portion configured to deliver electrosurgical energy to tissue.2. The cable assembly according to claim 1 , wherein the entire cable assembly has a diameter of in the range of 0.01 inches to about 0.5 inches.3. The cable assembly according to claim 1 , wherein the conductive braid is in tension between the rigid portion and the radiating portion.4. The cable assembly according to claim 2 , wherein the rigid tube is in intimate contact with the dielectric to prevent fluid ingress towards a proximal portion of the cable assembly.5. The cable assembly according to claim 2 , wherein a proximal end of the inner conductor extends from the rigid tube.6. The cable assembly according to claim 2 , wherein a distal portion of the rigid tube fixes the position of a proximal end of the conductive braid relative to the dielectric.7. The cable assembly according to claim 6 ...

Подробнее
12-03-2020 дата публикации

BASKET CATHETER WITH MICROELECTRODE ARRAY DISTAL TIP

Номер: US20200077959A1
Принадлежит:

A catheter adapted for greater mapping resolution and location precision has a basket-shaped, high density electrode assembly for large-area mapping, and an integrated distal tip providing an array of ultra-high density microelectrodes for acute focal mapping. The basket-shaped electrode assembly has a plurality of electrode-carrying spines and the distal tip has a nonmetallic, electrically insulating substrate body with indentations in which microelectrodes are positioned in a manner that the outer surface is generally flush with the outer surface of the substrate body to present a generally smooth, atraumatic distal tip profile. 1. A catheter comprising:an elongated catheter body having proximal and distal ends and at least one lumen therethrough; a substrate body having proximal and distal portions and a solid and unitary construction, the proximal portion of the substrate body comprising a proximal outer surface having a two-dimensional curvature, and the distal portion of the substrate body comprising a distal outer surface having a three-dimensional curvature,', 'a plurality of first recessed microelectrodes embedded in the proximal outer surface so that the first recessed microelectrodes have a first microelectrode curvature that generally conforms to the two-dimensional curvature of the proximal outer surface of the substrate body,', 'a plurality of second recessed microelectrodes embedded in the distal outer surface so that the second recessed microelectrodes have a second microelectrode curvatures that generally conforms to the three-dimensional curvature of the distal outer surface of the substrate body,', 'a plurality of microelectrode lead wires, each of the microelectrode lead wires corresponding to one of the plurality of first recessed microelectrodes or the plurality of second recessed microelectrodes, and', 'at least first and second isolated through holes in the solid construction of the substrate body, at least one of the plurality of ...

Подробнее
29-03-2018 дата публикации

Multi-Electrode Catheter Assemblies for Renal Neuromodulation and Associated Systems and Methods

Номер: US20180085162A1
Принадлежит:

Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a multi-electrode array configured to be delivered to a renal blood vessel. The array is selectively transformable between a delivery or low-profile state (e.g., a generally straight shape) and a deployed state (e.g., a radially expanded, generally spiral/helical shape). The multi-electrode array is sized and shaped so that the electrodes or energy delivery elements contact an interior wall of the renal blood vessel when the array is in the deployed (e.g., spiral/helical) state. The electrodes or energy delivery elements are configured for direct and/or indirect application of thermal and/or electrical energy to heat or otherwise electrically modulate neural fibers that contribute to renal function. 1. A catheter apparatus , comprising:an elongated tubular shaft having a proximal portion and a distal portion; and a control member comprising a pre-formed helical shape, wherein the control member is a tubular structure having a lumen therethrough and is composed of a nitinol multifilar stranded wire; and', 'a plurality of energy delivery elements carried by the support structure,, 'a therapeutic assembly disposed at the distal portion of the elongated shaft and adapted to be located at a target location within a renal artery of a human patient, the therapeutic assembly including a support structure comprising'}wherein the elongated tubular shaft and the therapeutic assembly together define therethrough a guide wire lumen configured to slidably receive a medical guide wire, andwherein axial movement of the guide wire relative to the therapeutic assembly transforms the support structure between (a) a low-profile delivery configuration and (b) a deployed configuration tending to assume the pre-formed helical shape of the control member.2. The catheter ...

Подробнее
05-05-2022 дата публикации

DEVICES AND METHODS FOR ABLATING TISSUE

Номер: US20220133397A1
Принадлежит: ABLATION GEN 2 PTY LTD

Disclosed herein are tissue ablation devices and methods. The device comprises a sheath comprising a distal end that is positionable at an ablation site in the tissue, a proximal end and a lumen extending therebetween. The device also comprises one or more electrodes that are advanceable and retractable through the lumen, wherein a distal portion of the one or more electrodes is deployable into a tissue ablating configuration from the distal end of the sheath upon advancement, and the one or more electrodes are removable from the lumen via the proximal end of the sheath upon retraction, whereupon the lumen becomes vacated. The sheath is configured for a surgical material to traverse the vacated lumen for delivery from the distal end of the sheath into the tissue.

Подробнее
05-04-2018 дата публикации

BI-POLAR SURGICAL INSTRUMENT

Номер: US20180092685A1
Принадлежит:

A surgical device is disclosed that comprises a shaft member and a pair of electrodes. The shaft member has a pair of electrode channels that open at the distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another. The pair of electrodes are configured to deliver energy, and one of the pair of electrodes are configured to be disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member. The shaft member further includes at least one lumen opening at the distal end of the shaft member. 129-. (canceled)30. A surgical device , comprising:a shaft member including first and second electrode channels that open at a distal end of the shaft member, wherein the first and second electrode channels are positioned adjacent to one another;first and second electrodes configured to deliver energy, wherein the first electrode is positioned in the first electrode channel and the second electrode is positioned in the second electrode channel, and wherein distal ends of the first and second electrodes are arranged to protrude from the distal end of the shaft member; andwherein the shaft member further includes and aspiration lumen and a fluid lumen that both open at the distal end of the shaft member.31. The surgical device of claim 30 , wherein the fluid lumen is positioned above the electrode channels.32. The surgical device of claim 30 , wherein the fluid lumen is disposed opposite the aspiration lumen claim 30 , with electrode openings being arranged between the fluid and aspiration lumens.33. The surgical device of claim 30 , wherein the electrode channels are configured are configured as fluid lumens.34. The surgical device of claim 30 , wherein distal ends of the electrodes are bent to protrude radially outwardly from an outer periphery of the shaft member.35. The surgical device of claim 30 , wherein the distal ends of the electrodes further comprise ...

Подробнее
26-03-2020 дата публикации

DOUBLE LOOP LASSO WITH SINGLE PULLER WIRE FOR BI-DIRECTIONAL ACTUATION

Номер: US20200093540A1
Принадлежит:

A catheter has a distal assembly with at least one loop with ring electrodes. A single continuous puller wire for bidirectional deflection is pre-bent into two long portions and a U-shape bend therebetween. The U-shape bend is anchored at a distal end of a deflectable section which is reinforced by at least one washer having at least two holes, each hole axially aligned with a respective lumen in the deflectable section. Each hole is centered with a lumen so that each puller wire portion therethrough is straight and subjected to tensile force only. A proximal end of the support member is flattened and serrated to provide a better bonding to the distal end of the deflectable section. 1. A catheter comprising:a catheter body including at least three lumens extending therethrough;an intermediate section attached to the catheter body, the intermediate section including a first off-axis lumen, a second off-axis lumen, and a third off-axis lumen such that the first off-axis lumen, the second off-axis lumen, and the third off-axis lumen are each aligned with a respective one of the at least three lumens of the catheter body;a washer disposed at a distal end of the intermediate section, the washer including a first washer lumen, a second washer lumen, and a third washer lumen;a single puller wire including a first proximal portion extending through the first off-axis lumen and the first washer lumen, a second proximal portion extending through the second off-axis lumen and the second washer lumen, and a mid-portion disposed transversely to the first proximal portion and the second proximal portion; anda plurality of lead wires extending through the third off-axis lumen and the third washer lumen.2. The catheter of claim 1 , in which the mid-portion of the single puller wire is disposed distal to the washer.3. The catheter of claim 2 , in which the distal end of the intermediate section comprises a connector section.4. The catheter of claim 3 , further comprising a distal ...

Подробнее
19-04-2018 дата публикации

METHODS AND APPARATUS FOR PERFORMING A NON-CONTINUOUS CIRCUMFERENTIAL TREATMENT OF A BODY LUMEN

Номер: US20180104005A1
Принадлежит:

Methods and apparatus are provided for non-continuous circumferential treatment of a body lumen. Apparatus may be positioned within a body lumen of a patient and may deliver energy at a first lengthwise and angular position to create a less-than-full circumferential treatment zone at the first position. The apparatus also may deliver energy at one or more additional lengthwise and angular positions within the body lumen to create less-than-full circumferential treatment zone(s) at the one or more additional positions that are offset lengthwise and angularly from the first treatment zone. Superimposition of the first treatment zone and the one or more additional treatment zones defines a non-continuous circumferential treatment zone without formation of a continuous circumferential lesion. Various embodiments of methods and apparatus for achieving such non-continuous circumferential treatment are provided. 116-. (canceled)17. A method , comprising:intravascularly positioning a catheter in a low-profile delivery configuration within a renal artery of a hypertensive human patient and proximate to renal nerves innervating a kidney of the patient;transforming an expandable electrode at a distal region of the catheter between the low-profile delivery configuration and an expanded treatment configuration,wherein the expandable electrode comprises a double helix arrangement, and wherein, in the treatment configuration, the expandable electrode is sized and shaped such that the expandable electrode contacts an inner wall of the renal artery of the patient; anddelivering electrical energy via the expandable electrode to create a treatment zone along a lengthwise segment of the renal artery,wherein delivering the electrical energy thermally inhibits neural communication along the renal nerves innervating the kidney of the patient, thereby resulting in a therapeutically beneficial reduction in blood pressure of the patient.18. The method of wherein delivering electrical energy ...

Подробнее
30-04-2015 дата публикации

Embedded thermocouple in denervation flex circuit

Номер: US20150119882A1
Принадлежит: Boston Scientific Scimed Inc

A medical device for sympathetic nerve ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit having a plurality of layers. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include a temperature sensor within the plurality of layers.

Подробнее
18-04-2019 дата публикации

Devices, Systems, and Methods for Diagnosis and Treatment of Overactive Bladder

Номер: US20190110732A1
Принадлежит: Autonomix Medical Inc

A system for modulating bladder function is disclosed. A system for evaluating the electrophysiological function of a bladder is disclosed. Methods for performing a controlled surgical procedure on a bladder are disclosed. A system for performing controlled surgical procedures in a minimally invasive manner is disclosed. An implantable device for monitoring and/or performing a neuromodulation procedure on a bladder is disclosed.

Подробнее
03-05-2018 дата публикации

BLADDER TISSUE MODIFICATION FOR OVERACTIVE BLADDER DISORDERS

Номер: US20180116707A1
Принадлежит:

Regions of tissue having reduced electrical propagation are created in a bladder to affect its electrical or mechanical properties. To create these tissue regions, a tubular device is advanced through the urethra leading to the interior of the bladder, a distal expandable structure of the device is expanded to contact the inner wall of the bladder, and electrodes or other active energy delivery elements of the device are activated to deliver ablation energy. The electrodes or other active energy delivery elements are disposed over the expandable structure which is shaped to conform to the interior of the bladder. The inner wall of the organ is ablated in a predetermined pattern. The same or other electrodes disposed over the expandable structure can used to electrically map the bladder. This map of electrical activity can be used to create the predetermined pattern. 1. A device for treating a disorder in a hollow bodily organ , the device comprising:a shaft advanceable through a bodily channel of a subject to reach a cavity of the organ;an ablation member having a collapsed configuration for advancement through the bodily channel and an expanded configuration adapted to create a predetermined pattern of electrically isolated tissue regions in an inner wall of the hollow bodily organ, with each electrically isolated tissue region being defined by at least one continuous ablation line and being no larger than half of a total inner surface area of the bodily organ.2. The device of claim 1 , further comprising an expandable member coupled to a distal end of the shaft claim 1 , the expandable member having a collapsed configuration advanceable through the bodily passage to reach the cavity of the organ and an expanded configuration configured to contact an inner wall of the organ when the expandable member is advanced therein.3. The device of claim 2 , wherein the ablation member is disposed over the expandable member.4. The device of claim 2 , wherein the expandable ...

Подробнее
03-05-2018 дата публикации

MEDICAL DEVICE WITH A SHAPE-MEMORY ALLOY COATED INNER SURFACE

Номер: US20180116714A1
Автор: Karpiel John
Принадлежит: Cook Medical Technologies LLC

A medical device may include an elongate tubular member having a distal portion that is configured to curl in a desired direction. A shape-memory alloy structure may be disposed in a lumen of the elongate tubular member at the distal portion. The shape-memory alloy may have an original, pre-deformed shape that is curved to facilitate the curling of the distal portion in the desired direction. 1. A medical device comprising: a body; and', 'a lumen longitudinally extending in the body from the proximal portion to the distal portion, wherein an inner surface of the body defines the lumen;, 'an elongate tubular member longitudinally extending from a proximal portion to a distal portion, the elongate tubular member comprisingan elongate shape-memory alloy (SMA) structure that is disposed on the inner surface at the distal portion, the elongate SMA structure having a longitudinally-curved pre-deformed shape,wherein the distal portion of the elongate tubular member is configured to be in a curled state due to the longitudinally-curved pre-deformed shape of the elongate SMA structure.2. The medical device of claim 1 , wherein the elongate SMA structure comprises a curved cross-sectional profile.3. The medical device of claim 2 , wherein a contour of the curved cross-sectional profile is defined by the inner surface of the body.4. The medical device of claim 2 , wherein the curved cross-sectional profile is an arc.5. The medical device of claim 2 , wherein the curved cross-sectional profile is a circle.6. The medical device of claim 1 , wherein the elongate SMA structure comprises an elongate tubular structure comprising a body and a lumen longitudinally extending in the body.7. The medical device of claim 6 , wherein the elongate tubular structure comprises a series of linearly-aligned notches.8. The medical device of claim 7 , wherein each of the linearly-aligned notches has a circumferential length less than or equal to half a circumferential length of the elongate ...

Подробнее
25-08-2022 дата публикации

Flexible circuit having improved adhesion to a renal nerve modulation balloon

Номер: US20220265346A1
Принадлежит: Boston Scientific Scimed Inc

A balloon for renal nerve modulation is disclosed. The balloon may include a polymer material forming a balloon wall having an outer surface and flexible circuits comprising a base selectively adhered to the exterior surface of the balloon wall. Adhesive is selectively applied to the outer surface of the balloon, to the flexible circuit or to both such that the adhesive is selectively deposited on the at least a portion of the at least two pads or on the at least a portion of the at least two pads and to a portion of the distal spline. The portion of the at least two pads or the portion of the at least two pads and a portion of the distal spline are adhered to the outer surface of the balloon and a remainder of the flexible circuit moves freely with respect to the outer surface of the balloon.

Подробнее
25-04-2019 дата публикации

Ablation catheter with microelectrode and method for producing the same

Номер: US20190117299A1
Автор: Ralf Kaufmann
Принадлежит: VascoMed GmbH

An ablation catheter with a catheter shaft, an ablation electrode that is arranged at the distal end of the catheter shaft, a microelectrode that is arranged on a surface of the ablation electrode, and a lead element that has an electrically conductive connection with the microelectrode. The lead element is surrounded by an insulating material so that the lead element is electrically insulated from the ablation electrode. At least sections of the insulating material with the lead element are arranged on the surface of the ablation electrode. The lead element is fastened by tensioning.

Подробнее
16-04-2020 дата публикации

FLEXIBLE CIRCUITS FOR ELECTROSURGICAL INSTRUMENT

Номер: US20200113624A1
Принадлежит:

The disclosure provides a method of manufacturing a flexible circuit electrode assembly and an apparatus manufactured by said method. According to the method, an electrically conductive sheet is laminated to an electrically insulative sheet. An electrode is formed on the electrically conductive sheet. An electrically insulative layer is formed on a tissue contacting surface of the electrode. The individual electrodes are separated from the laminated electrically insulative sheet and the electrically conductive sheet. In another method, a flexible circuit is vacuum formed to create a desired profile. The vacuum formed flexible circuit is trimmed. The trimmed vacuum formed flexible circuit is attached to a jaw member of a clamp jaw assembly. 1. A method of manufacturing a flexible circuit electrode , the method comprising:laminating a flexible electrically conductive sheet to a flexible electrically insulative sheet with an adhesive therebetween to produce a flexible laminate;forming at least one electrode on the flexible electrically conductive sheet;forming at least one electrically insulative layer on a tissue contacting surface of the least one electrode; andseparating the at least one electrode from the flexible laminate.2. The method of claim 1 , wherein the flexible electrically conductive sheet is selected from any one of copper claim 1 , gold plated copper claim 1 , silver claim 1 , platinum claim 1 , stainless steel claim 1 , or aluminum claim 1 , or alloys thereof.3. The method of claim 1 , wherein the flexible electrically insulative sheet is selected from any one of polyimide claim 1 , polyester claim 1 , fluorocarbon claim 1 , or any polymeric material claim 1 , or any combinations thereof.4. The method of claim 1 , wherein forming the at least one electrode on the flexible electrically conductive sheet comprises etching at least one electrode on the flexible electrically conductive sheet.5. The method of claim 4 , wherein etching comprises:screen ...

Подробнее
01-09-2022 дата публикации

Expandable ablation devices and methods of use

Номер: US20220273363A1
Принадлежит: Boston Scientific Scimed Inc

A medical system having a medical tool, including a handle, a shaft extending from the handle and defining a lumen, a wire attached to and extending from the handle through the lumen, expandable elements at a distal end of the wire. An electrical generator is coupled to a proximal end of the wire and supplies a first waveform to the wire and the expandable elements as the expandable elements expand from an unexpanded state to an expanded state within a tissue. The electrical generator supplies a second waveform to the wire and the expandable elements when the expandable elements are in the expanded state within the tissue. The first waveform cuts tissue, the second waveform ablates tissue using radiofrequency ablation or irreversible electroporation.

Подробнее
23-04-2020 дата публикации

BI-POLAR SURGICAL INSTRUMENT

Номер: US20200121384A1
Принадлежит:

A surgical device is disclosed that comprises a shaft member and a pair of electrodes. The shaft member has a pair of electrode channels that open at the distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another. The pair of electrodes are configured to deliver energy, and one of the pair of electrodes is configured to be disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member. The shaft member further includes at least one lumen opening at the distal end of the shaft member. A lighting arrangement including a fiber optic cable configured to deliver light at the distal end of the fiber optic cable, the fiber optic cable positioned within the at least one lumen. 1. A surgical device , comprising:a shaft member including a pair of electrode channels that open at a distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another;a pair of electrodes configured to deliver energy, wherein one of the pair of electrodes is disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member;wherein the shaft member further includes at least one lumen opening at the distal end of the shaft member; anda lighting arrangement including a fiber optic cable configured to deliver light at the distal end of the fiber optic cable, the fiber optic cable positioned within the at least one lumen.2. The surgical device of claim 1 , wherein the at least one lumen is an aspiration lumen and includes an aspiration lumen opening at the distal end of the shaft member.3. The surgical device of claim 2 , wherein an aspiration tubing is connected to a proximal end of the surgical device claim 2 , a proximal end of the aspiration tubing configured to be operatively connected to a vacuum generator claim 2 , a distal end of the aspiration tubing ...

Подробнее
10-06-2021 дата публикации

User interface and lock features for positioning multiple components within a body

Номер: US20210169552A1
Принадлежит: Gyrus ACMI Inc

Disclosed embodiments include apparatuses, systems, and methods for positioning electrodes. In an illustrative embodiment, an apparatus includes a primary electrode defining a lumen, an elongated secondary electrode slidably receivable within the lumen, and a sheath configured to slidably receive the electrodes and to convey the electrodes toward a target region. A housing is coupled with the sheath and movably mounted to motivate the sheath relative to the target region. A primary actuator is coupled with the primary electrode and slidably coupled with the housing to motivate the primary electrode relative to the sheath. A secondary actuator is coupled with the secondary electrode and movably coupled with the primary actuator to be slidable with the electrodes in concert. The secondary actuator is rotatable independently of the primary actuator to travel along a helical path to motivate the secondary electrode to move relative to the target region independently of the primary electrode.

Подробнее
10-06-2021 дата публикации

Devices for therapeutic nasal neuromodulation and associated methods and systems

Номер: US20210169566A1

Devices for therapeutic nasal neuromodulation and associated systems and methods are disclosed herein. A system for therapeutic neuromodulation in a nasal region configured in accordance with embodiments of the present technology can include, for example, a shaft and a therapeutic element at a distal portion of the shaft. The shaft can locate the distal portion intraluminally at a target site inferior to a patient's sphenopalatine foramen. The therapeutic element can include an energy delivery element configured to therapeutically modulate postganglionic parasympathetic nerves at microforamina of a palatine bone of the human patient for the treatment of rhinitis or other indications. In other embodiments, the therapeutic element can be configured to therapeutically modulate nerves that innervate the frontal, ethmoidal, sphenoidal, and maxillary sinuses for the treatment of chronic sinusitis.

Подробнее
24-05-2018 дата публикации

ALTERNATIVE PLACEMENT OF THERMAL SENSORS ON BIPOLAR ELECTRODE

Номер: US20180140356A1
Принадлежит:

A medical device for tissue ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include a temperature sensor aligned with two or more electrodes. 1. A medical device for tissue ablation , comprising:a catheter shaft;an expandable member coupled to the catheter shaft, the expandable member being capable of shifting between an unexpanded configuration and an expanded configuration; anda plurality of elongate electrode assemblies each constructed as a flexible circuit, the plurality of elongate electrode assemblies disposed on an outer surface of the expandable member;wherein each of the plurality of elongate electrode assemblies includes one or more temperature sensors and a plurality of pairs of electrodes; andwherein the one or more temperature sensors is positioned between the plurality of pairs of electrodes.2. The medical device of claim 1 , wherein the one or more temperature sensors positioned between the plurality of pairs of electrodes is positioned on a plurality of electrode pads.3. The medical device of claim 1 , wherein the one or more temperature sensors positioned between the plurality of pairs of electrodes is positioned on the outer surface of the expandable member.4. The medical device of claim 1 , wherein each of the plurality of elongate electrode assemblies is formed from a multiple-layer structure comprising a first laminated sheet including a first polymer layer laminated to a first conductive layer and a second laminated sheet including a second polymer layer laminated to a second conductive layer.5. The medical device of claim 4 , wherein the ...

Подробнее
15-06-2017 дата публикации

Electrode array catheter with interconnected framework

Номер: US20170164858A1
Автор: Shubhayu Basu
Принадлежит: Biosense Webster Israel Ltd

This disclosure includes a catheter with an electrode array formed by an interconnected framework. The framework may have a plurality of elements interconnected by a plurality of junctions at locations intermediate the proximal and distal ends of the electrode array assembly. The electrodes may be printed on a polymeric layer of the interconnected framework.

Подробнее
30-05-2019 дата публикации

Expandable catheter assembly with flexible printed circuit board (pcb) electrical pathways

Номер: US20190159729A1
Принадлежит: Acutus Medical Inc

Provided is a flex-PCB catheter device that is configured to be inserted into a body lumen. The flex-PCB catheter comprises an elongate shaft, an expandable assembly, a flexible printed circuit board (flex-PCB) substrate, a plurality of electronic components and a plurality of communication paths. The elongate shaft comprises a proximal end and a distal end. The expandable assembly is configured to transition from a radially compact state to a radially expanded state. The plurality of electronic elements are coupled to the flex-PCB substrate and are configured to receive and/or transmit an electric signal. The plurality of communication paths are positioned on and/or within the flex-PCB substrate. The communication paths selectively couple the plurality of electronic elements to a plurality of electrical contacts configured to electrically connect to an electronic module configured to process the electrical signal. The flex-PCB substrate can have multiple layers, including one or more metallic layers. Acoustic matching elements and conductive traces can be includes in the flex-PCB substrate.

Подробнее
01-07-2021 дата публикации

Deflectable electrode with higher distal bias relative to proximal bias

Номер: US20210196307A1
Принадлежит: Cilag GmbH International

An end-effector and a surgical instrument are disclosed. The end-effector includes a clamp arm and an ultrasonic blade configured to acoustically couple to an ultrasonic transducer and to electrically couple to a pole of an electrical generator. The clamp arm includes a clamp jaw defining zones, a spring disposed in each of the zones, and a cantilever electrode configured to couple to an opposite pole of the electrical generator disposed along the zones and in contact with each of the springs to apply a variable spring bias along the length of the cantilever electrode. The cantilever electrode is fixed to the clamp jaw at a proximal end and free to deflect at a distal end. The spring bias force a spring in a zone is different from the spring bias force bias of another spring in another zone.

Подробнее
22-06-2017 дата публикации

TRANSLUMINAL ELECTRODE CATHETERS

Номер: US20170172651A1
Принадлежит: RAINBOW MEDICAL LTD.

A method is described, including: (i) advancing a catheter to a first portion of a renal artery, the catheter having a plurality of electrodes coupled thereto; (ii) using one or more of the electrodes to apply ablating energy at a first portion of the renal artery; (iii) using one or more of the electrodes to apply excitatory current at a second portion of the renal artery that is at or efferent to the first portion; (iv) using a physiological sensor, sensing that a physiological response to the excitatory current is below a threshold response; (v) subsequently, advancing the catheter distally, and (vi) subsequently, using one or more of the electrodes to apply ablating energy at a third portion of the renal artery that is the same as or efferent to the second portion. Other embodiments are also described. 1. A method for use with a renal artery of a subject , the method comprising:(a) advancing a catheter to a first portion of a renal artery of the subject, the catheter having a plurality of electrodes coupled thereto;(b) using one or more of the electrodes to apply ablating energy at a first portion of the renal artery;(c) using one or more of the electrodes to apply excitatory current at a second portion of the renal artery that is at or efferent to the first portion;(d) using a physiological sensor, sensing a physiological response of the subject to the excitatory current and determining whether the physiological response is below a threshold response;(e) subsequently, based upon determining that the physiological response is below the threshold response, advancing the catheter distally;(f) subsequently, using one or more of the electrodes to apply excitatory current at a third portion of the renal artery that is the same as or efferent to the second portion;(g) using the physiological sensor, sensing a physiological response of the subject to the excitatory current applied at the third portion and determining whether the physiological response is above the ...

Подробнее
16-07-2015 дата публикации

MEDICAL DEVICES WITH FLEXIBLE CIRCUIT ASSEMBLIES

Номер: US20150196354A1
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

Medical devices for sympathetic nerve modulation are disclosed. An example medical device for sympathetic nerve modulation may include a catheter shaft having a distal region. An expandable member may be coupled to the distal region. A flexible circuit assembly may be attached to the expandable member. The flexible circuit assembly may include a first electrode strip, a second electrode strip, and a sensor strip disposed between the first electrode strip and the second electrode strip. The first electrode strip may include a first electrode. The second electrode strip may include a second electrode. The first electrode and the second electrode may define a pair of bipolar electrodes. 1. A medical device for sympathetic nerve modulation , comprising:a catheter shaft having a longitudinal axis;a balloon coupled to the catheter shaft;a flexible circuit assembly coupled to the catheter shaft, the flexible circuit assembly including two or more flexible strips;wherein each of the two or more flexible strips include one or more electrodes; andwherein at least a portion of the flexible circuit assembly is canted relative to the longitudinal axis of the catheter shaft.2. The medical device of claim 1 , wherein the portion of the flexible circuit assembly that is canted is oriented at an angle of 45 degrees or less relative to the longitudinal axis of the catheter shaft.3. The medical device of claim 1 , wherein the portion of the flexible circuit assembly that is canted is oriented at an angle of 5-30 degrees relative to the longitudinal axis of the catheter shaft.4. The medical device of claim 1 , wherein the flexible circuit assembly includes one or more laser ablated regions.5. The medical device of claim 1 , wherein the flexible circuit assembly includes polyethylene terephthalate.6. The medical device of claim 1 , wherein the flexible circuit assembly includes at least one pair of bipolar electrodes.7. The medical device of claim 1 , wherein the flexible circuit ...

Подробнее
14-07-2016 дата публикации

Energy treatment device

Номер: US20160199121A1
Автор: Seigo KASE
Принадлежит: Olympus Corp

An energy treatment device includes a probe, a sheath unit, a fixed handle, a movable handle unit, a rotation axis, a jaw and a thickness-reduced portion. The thickness-reduced portion is one part of the jaw and is provided between the rotation axis and a distal end of the jaw. The thickness-reduced portion flexes in response to a reaction force when one part of the jaw receives the reaction force from a treatment target due to the opening and closing of the movable handle unit to the treatment target. The thickness-reduced portion prevents the deformation of the other parts of the jaw by flexing.

Подробнее
12-07-2018 дата публикации

Atraumatic Medical Device

Номер: US20180193592A1
Принадлежит: MedWerks, LLC

A catheter with a spring tip that facilitates atraumatic initial placement and also continues to protect tissue contacted by the catheter device subsequent to the initial placement. The spring tip is shock-absorbing and axially compliant and allows enhanced use of various devices in conjunction with the tip such as bioptomes, electrodes, needles, flushing catheters, delivery catheters, and the like. The atraumatic shock-absorbing tip could include conductive or non-conductive materials. 1. A method of engaging target tissue with a catheter comprising:navigating a catheter having a distal spring tip to target tissue;contacting the target tissue with the spring tip;axially compressing the spring tip against the target tissue;performing a procedure on the target tissue while maintaining contact between the tissue and the spring tip.2. The method of wherein navigating a catheter having a distal spring tip to target tissue comprises navigating a catheter having a mesh spring tip.3. The method of wherein navigating a catheter having a distal spring tip to target tissue comprises navigating a catheter having a foam spring tip.4. The method of wherein axially compressing the spring tip against the target tissue comprises advancing the catheter toward the target tissue.5. The method of wherein contacting the target tissue with the spring tip comprises magnetically attracting the spring tip to the target tissue.6. The method of wherein performing a procedure on the target tissue comprises sending electricity through the tissue using the spring tip as an electrode.7. The method of wherein maintaining contact between the tissue and the spring tip comprises positioning the spring tip such that biological movement of the target tissue is absorbed by the spring tip without affecting a position of the catheter.8. The method of wherein performing a procedure on the target tissue comprises advancing a tool through a lumen in the catheter and through the spring tip to engage the ...

Подробнее
30-07-2015 дата публикации

BI-POLAR SURGICAL INSTRUMENT

Номер: US20150209101A1
Принадлежит:

A surgical device is disclosed that comprises a shaft member and a pair of electrodes. The shaft member has a pair of electrode channels that open at the distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another. The pair of electrodes are configured to deliver energy, and one of the pair of electrodes are configured to be disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member. The shaft member further includes at least one lumen opening at the distal end of the shaft member. 129-. (canceled)30. A surgical device , comprising:a housing;a shaft member at least partially disposed within the housing, the shaft member including a pair of electrode channels that open at a distal end of the shaft member, wherein the electrode channels are positioned adjacent to one another;a pair of electrodes configured to deliver energy, wherein one of the pair of electrodes are configured to be disposed in each electrode channel such that distal ends of each of the electrodes are arranged to protrude from the distal end of the shaft member; anda stiffening adapter having a stiffening sleeve, wherein the stiffening adapter is attached to a distal end of the housing;wherein the shaft member extends distally from a distal end of the stiffening sleeve.31. The surgical device of claim 30 , wherein the shaft member is selectively formable by a user.32. The surgical device of claim 30 , wherein the stiffening adapter is permanently attached to the distal end of the housing.33. The surgical device of claim 32 , wherein the stiffening adapter is glued to the distal end of the housing.34. The surgical device of claim 32 , wherein the stiffening adapter is ultrasonically welded to the distal end of the housing.35. The surgical device of claim 30 , wherein the stiffening adapter is selectively attached to the distal end of the housing.36. The surgical device of ...

Подробнее
06-08-2015 дата публикации

Alternative placement of thermal sensors on bipolar electrode

Номер: US20150216591A1
Принадлежит: Boston Scientific Scimed Inc

A medical device for tissue ablation may include a catheter shaft, an expandable member disposed on or coupled to the catheter shaft, and a plurality of elongate electrode assemblies each constructed as a flexible circuit. The expandable member may be configured to shift between an unexpanded configuration and an expanded configuration. The plurality of electrode assemblies may be disposed on an outer surface of the expandable member. Each of the plurality of electrode assemblies may include a temperature sensor aligned with two or more electrodes.

Подробнее
06-08-2015 дата публикации

Capsulotomy Cartridge

Номер: US20150216728A1
Принадлежит:

A cartridge of a surgical device is disclosed that includes a capsulotomy device and a shell structure. The capsulotomy device includes a suction cup, a chamber configured to provide suction to the suction cup, and a cutting element that can be put into contact with a lens capsule of an eye to excise a portion of tissue of the lens capsule. Both the suction cup and cutting element are collapsible. The shell structure is configured for housing the capsulotomy device. The housing of the shell structure can contain the suction cup, the chamber, and the cutting element of the capsulotomy device to protect the device before it is used in performing a capsulotomy. 1. A cartridge of a surgical device , the cartridge comprising: a suction cup,', 'a chamber in fluid communication with the suction cup, the chamber configured to provide suction to the suction cup via a suction mechanism operable through a handpiece, and', 'a cutting element coupled to the suction cup in a position such that the cutting element can be put into contact with a lens capsule of an eye to excise a portion of tissue of the lens capsule, the suction cup and cutting element being collapsible; and, 'a capsulotomy device comprisinga shell structure configured for housing the capsulotomy device within, the shell structure comprising a housing having an outer surface configured to contain the suction cup, the chamber, and the cutting element of the capsulotomy device within the outer surface to protect the capsulotomy device before use in performing a capsulotomy.2. The cartridge of claim 1 , wherein the cartridge is reversibly attachable to the handpiece of the surgical device claim 1 , and wherein the cartridge is positionable on the handpiece such that claim 1 , when the surgical device is in use for performing the cap sulotomy claim 1 , suction is provided to the suction cup via the suction mechanism operable through the handpiece.3. The cartridge of claim 1 , further comprising a suction generator ...

Подробнее
25-06-2020 дата публикации

SYSTEMS AND METHODS FOR PERFORMING ENDOMETRIAL ABLATION

Номер: US20200197081A1
Принадлежит:

A method and system of providing therapy to a patient's uterus is provided, which can include any number of features. The method can include the steps of inserting a uterine device into the uterus and performing a uterine integrity test to determine that the uterus is intact and not perforated. If it is determined that the uterus is not perforated, a patency test can be performed to determine that the uterine device is not clogged or embedded in tissue. If the uterus is intact and the device is not clogged or embedded in tissue, the uterus can be treated with the uterine device, e.g., uterine ablation. Systems for performing these methods are also disclosed. 1. A method of performing a procedure on a uterus of a patient , comprising the steps of:inflating the uterus with a gas/fluid from a uterine ablation device;performing an integrity test with the uterine ablation device to determine if the uterus is sealed;controlling a valve disposed in an outflow lumen of the uterine ablation device to allow gas/fluid to flow out of the uterus at a flow rate between 5 ml/min and 40 ml/min; andwhile the gas/fluid is flowing out of the uterus at the flow rate, performing a patency test with the uterine ablation device to determine if the uterine ablation device is clogged or embedded into tissue.2. The method of claim 1 , wherein the controlling step further comprises partially opening the valve disposed within the outflow lumen.3. The method of claim 2 , wherein partially opening comprises partially opening the valve in the range of 20-50% open.4. The method of claim 1 , wherein the controlling step further comprises:pulsing the opening of the valve rapidly until flow of gas/fluid begins through the outflow lumen; andlowering a duty cycle of the valve after flow of gas/fluid begins.5. The method of claim 4 , wherein the valve comprises a balloon. This application is a continuation of U.S. application Ser. No. 16/422,835, filed May 24, 2019, now U.S. Pat. No. 10,575,898; which ...

Подробнее
26-07-2018 дата публикации

DOUBLE LOOP LASSO WITH SINGLE PULLER WIRE FOR BI-DIRECTIONAL ACTUATION

Номер: US20180206914A1
Принадлежит:

A catheter has a distal assembly with at least one loop with ring electrodes. A single continuous puller wire for bidirectional deflection is pre-bent into two long portions and a U-shape bend therebetween. The U-shape bend is anchored at a distal end of a deflectable section which is reinforced by at least one washer having at least two holes, each hole axially aligned with a respective lumen in the deflectable section. Each hole is centered with a lumen so that each puller wire portion therethrough is straight and subjected to tensile force only. A proximal end of the support member is flattened and serrated to provide a better bonding to the distal end of the deflectable section. 1. A catheter comprising:an elongated tubular catheter body with at least one lumen extending there through;a deflectable intermediate section having proximal and distal ends and at least two off-axis lumens extending there through, the proximal end of the deflectable intermediate section being attached to a distal end of the catheter body;a puller wire having two proximal portions and a mid-portion transverse to the two proximal portions, each proximal portion extending through a respective off-axis lumen of the deflectable intermediate section, the mid-portion being distal of the distal end of the deflectable intermediate section; anda control handle comprising a deflection mechanism adapted to act on at least one proximal portion of the puller wire anchored in the control handle to deflect the deflectable intermediate section.2. The catheter of claim 1 , further comprising at least one washer at the distal end of the deflectable intermediate section.3. The catheter of claim 2 , wherein the washer includes at least two off-axis lumens claim 2 , each axially aligned with a respective off-axis lumen of the deflectable intermediate section.4. The catheter of claim 3 , wherein each proximal portion of the puller wire extends through a respective off-axis lumen of the washer.5. The catheter ...

Подробнее
11-07-2019 дата публикации

CATHETER ELECTRODE ASSEMBLIES AND METHODS OF CONSTRUCTION THEREFOR

Номер: US20190209236A1
Принадлежит:

A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided. 123.-. (canceled)24. An expandable catheter electrode assembly including an outer tubing defining a longitudinal axis , and a plurality of structural support members , at least one of the plurality of structural support members comprising:a flexible circuit including a plurality of electrical traces and a substrate; andan electrode electrically coupled with at least one of the plurality of electrical traces.25. The expandable catheter electrode assembly of claim 24 , wherein at least one of the plurality of structural support members comprises a Nitinol material incorporated therein.26. The expandable catheter electrode assembly of claim 24 , further comprising a nonconductive liner tube disposed within at least a portion of the electrode.27. The expandable catheter electrode assembly of claim 26 , wherein the outer tubing is bonded to at least a portion of the liner tube.28. The expandable catheter electrode assembly of claim 24 , further comprising at least one radio-opaque marker disposed within at least a portion of the electrode.29. The expandable catheter electrode ...

Подробнее
02-07-2020 дата публикации

Flexible tip catheter with extended fluid lumen

Номер: US20200206456A1

A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall.

Подробнее
16-10-2014 дата публикации

FLATTENED MESH ABLATION DEVICE

Номер: US20140309631A1
Принадлежит: Cook Medical Technologies LLC

A flattened mesh ablation device for ablating tissue in a body lumen is disclosed. The flattened mesh ablation device includes a flattened mesh with at least one conductor on an edge of the flattened mesh. When the flattened mesh is compressed axially it expands radially to contact the inner surface of the body lumen in a helical pattern. Energy is applied to the conductor ablating tissue proximate the conductor. 1. A medical device comprising:a first longitudinal member having a distal end and a proximal end;a flattened mesh having a distal mesh end and a proximal mesh end, the flattened mesh being twisted to form a helix, the proximal mesh end being secured to the distal end of the first longitudinal member;a conductor on an edge of the helix; anda compression mechanism adapted to move the distal mesh end between a first position in which the flattened mesh is unexpanded and a second position in which the distal mesh end and the proximal mesh end are near one another thereby expanding the flattened mesh into an expanded state.2. The medical device of wherein the compression mechanism comprises a second longitudinal member disposed within the first longitudinal member claim 1 , the second longitudinal member having a second longitudinal member distal end secured to the distal mesh end.3. The medical device of wherein the conductor comprises a conductive filament woven in the flattened mesh.4. The medical device of wherein the conductor comprises a conductive ink printed on the edge of the flattened mesh.5. The medical device of further comprising a second conductor on the edge of the helix claim 1 , the second conductor being offset from the first conductive coating.6. The medical device of wherein the conductive ink covers the entire flattened mesh.7. The medical device of further comprising a radio frequency energy source in electrical communication with the conductor.8. The medical device of further comprising a radio frequency energy source in electrical ...

Подробнее
20-08-2015 дата публикации

Surgical instrument comprising an electrode

Номер: US20150230858A1
Принадлежит: Ethicon Endo Surgery Inc

A surgical instrument can comprise a first electrode, a second electrode, and a retractable sheath. At least one of the electrodes can comprise an insulative jacket extending along the length thereof which can comprise a tissue stop for limiting the progression of the electrode into tissue. In various embodiments, a surgical instrument can comprise a first electrode, a second electrode, and a displaceable arc guard positioned between the electrodes. In certain embodiments, a surgical instrument can comprise an electrode including a flexible mesh configured to conform to the tissue against which it is positioned.

Подробнее
09-08-2018 дата публикации

MEDICAL DEVICE BALLOON

Номер: US20180221086A1
Принадлежит:

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable member may be coupled to the catheter shaft. The expandable member may be capable of shifting between a folded configuration and an expanded configuration. A plurality of flexible elements may be attached to the expandable member, with a plurality of electrode assemblies disposed on the flexible elements. The flexible elements may have a grooved substrate. 1. A method for treating a body lumen wall , the method comprising:placing a distal end of a catheter proximate to the body lumen wall, the distal end including an expandable member having a longitudinal axis and a body extending along the longitudinal axis, a plurality of flexible elements on the body of the expandable member, each flexible element including a substrate having a plurality of elongate grooves formed therein and at least one electrode assembly;expanding the expandable member to place one or more of the at least one electrode assembly in sufficient proximity to tissue of a portion of the body lumen wall, so as to allow energy to be transferred to the tissue; andenergizing each electrode assembly placed in proximity to the tissue, so as to apply energy sufficient to treat the tissue.2. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves extend along the substrate at an angle from the longitudinal axis of the expandable member.3. The method of claim 1 , wherein the plurality of elongate grooves extends along the substrate in more than one direction.4. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves are substantially parallel to each other.5. The method of claim 1 , wherein at least a portion of the plurality of elongate grooves defines a cross-hatched pattern.6. The method of claim 1 , wherein the plurality of elongate grooves extends over substantially the entire length of the ...

Подробнее
18-07-2019 дата публикации

Ablation catheter and method for electrically isolating cardiac tissue

Номер: US20190216538A1

Ablation catheter comprising an elongate member with proximal and distal ends, wherein the distal end is arranged to apply a high energy electrical shock from a plurality of locations along the length of said distal end and wherein said distal end is curved. Preferably the distal end of the elongate member extends in a circle segment.

Подробнее
25-08-2016 дата публикации

DOUBLE LOOP LASSO WITH SINGLE PULLER WIRE FOR BI-DIRECTIONAL ACTUATION

Номер: US20160243335A1
Принадлежит:

A catheter has a distal assembly with at least one loop, if not two, with ring electrodes. The distal assembly has an elongated support member covered by an extruded form having two lumens, one sized for nonslip tight fit with the support member. A single continuous puller wire for bidirectional deflection is pre-bent into two long portions and a 1. A catheter comprising:an elongated tubular catheter body with at least one lumen extending there through;a deflectable intermediate section having proximal and distal ends and at least two off-axis lumens extending there through, the proximal end of the deflectable intermediate section being attached to the distal end of the catheter body; and a tubular structure having a generally straight proximal region attached to the intermediate section, a generally circular main region generally transverse and distal to the proximal region;', 'an elongated support member extending through the distal assembly, the elongated support member having shape memory;', 'a non-conductive cover over at least the main region of the distal assembly; and', 'at least one electrode carried on the generally circular main region of the distal assembly;, 'a distal assembly distal of the deflectable intermediate section, the distal assembly comprisingat least one washer at a distal end of the deflectable intermediate section, the washer having at least two off-axis lumens, each axially aligned with a respective off-axis lumen of the deflectable intermediate section;a puller wire having two proximal portions and a mid-portion transverse to the two proximal portions, each distal portion extending through a respective off-axis lumen of the deflectable intermediate section and a respective off-axis lumen of the washer, the mid-portion being distal of the washer and extending between the two off-axis lumens of the washer; anda control handle comprising deflection mechanism adapted to act on at least one proximal portion of the puller wire anchored in the ...

Подробнее
24-08-2017 дата публикации

FLEXIBLE CIRCUITS FOR ELECTROSURGICAL INSTRUMENT

Номер: US20170238991A1
Принадлежит:

The disclosure provides a method of manufacturing a flexible circuit electrode assembly and an apparatus manufactured by said method. According to the method, an electrically conductive sheet is laminated to an electrically insulative sheet. An electrode is formed on the electrically conductive sheet. An electrically insulative layer is formed on a tissue contacting surface of the electrode. The individual electrodes are separated from the laminated electrically insulative sheet and the electrically conductive sheet. In another method, a flexible circuit is vacuum formed to create a desired profile. The vacuum formed flexible circuit is trimmed. The trimmed vacuum formed flexible circuit is attached to a jaw member of a clamp jaw assembly. 1. A method of manufacturing a flexible circuit electrode , the method comprising:laminating a flexible electrically conductive sheet to a flexible electrically insulative sheet with an adhesive therebetween to produce a flexible laminate;forming at least one electrode on the flexible electrically conductive sheet;forming at least one electrically insulative layer on a tissue contacting surface of the least one electrode; andseparating the at least one electrode from the flexible laminate.2. The method of claim 1 , wherein the flexible electrically conductive sheet is selected from any one of copper claim 1 , gold plated copper claim 1 , silver claim 1 , platinum claim 1 , stainless steel claim 1 , or aluminum claim 1 , or alloys thereof.3. The method of claim 1 , wherein the flexible electrically insulative sheet is selected from any one of polyimide claim 1 , polyester claim 1 , fluorocarbon claim 1 , or any polymeric material claim 1 , or any combinations thereof.4. The method of claim 1 , wherein forming the at least one electrode on the flexible electrically conductive sheet comprises etching at least one electrode on the flexible electrically conductive sheet.5. The method of claim 4 , wherein etching comprises:screen ...

Подробнее
06-11-2014 дата публикации

IRRIGATED FLEXIBLE ABLATION CATHETER

Номер: US20140330269A1
Принадлежит:

A flexible tip electrode for an ablation catheter is disclosed. The catheter includes a catheter body and a hollow elongate tip electrode disposed at a distal end of the catheter body. The electrode includes a sidewall provided with one or more elongate gaps extending therethrough. The one or more elongate gaps providing flexibility in the sidewall for bending movement of the tip electrode relative to a longitudinal axis of the catheter body. 134.-. (canceled)35. An ablation catheter comprising:a catheter body;a hollow elongate electrode disposed at a distal end of the catheter body, the electrode comprising a sidewall provided with one or more elongate gaps extending therethrough, the one or more elongate gaps providing flexibility in the sidewall for bending movement of the electrode relative to a longitudinal axis of the catheter body, wherein the sidewall is defined by a stem extending about the longitudinal axis, the stem including a plurality of protruding members extending toward an adjacent section of the stem, and wherein the electrode is configured to deform and flex when it is dragged across a tissue surface; anda fluid delivery lumen in communication with the one or more elongate gaps.36. The catheter as recited in claim 35 , wherein the sidewall is a substantially cylindrical sidewall provided with at least one elongate gap selected from the group consisting of an annular gap around a portion of a circumference of the sidewall and helical gap forming a helical pattern on the sidewall.37. The catheter as recited in claim 35 , wherein the sidewall is a substantially cylindrical sidewall claim 35 , the gaps extending as one or more of an annular gap around a portion of a circumference of the sidewall claim 35 , a helical gap forming a helical pattern on the sidewall claim 35 , a zig-zag gap forming a zig-zag pattern on the sidewall claim 35 , a gap that outlines alternating interlocking blocks claim 35 , and a wavy gap forming a wavy pattern on the ...

Подробнее
13-11-2014 дата публикации

Flexible circuit for delivery through a working channel

Номер: US20140336636A1
Принадлежит: COVIDIEN LP

Methods, systems, and devices for providing treatment to a target site are described. The system may include a guide assembly, an expandable support device coupled with the distal end of the guide assembly, and an operative member disposed on the expandable support device. The expandable support device may be configured to transition between a collapsed and expanded configuration. The expandable support device may be supported by one or more flexible supports aligned in parallel with an axis about which the expandable support device collapses and/or multiple splines arranged in a pattern configured to promote transitioning of the expandable support device between an expanded and collapsed configuration. The guide assembly may be configured to provide torque to the expandable support device. The operative member can include multiple electrodes arranged in parallel to the axis about which the expandable support device collapses.

Подробнее
24-09-2015 дата публикации

Treatment device

Номер: US20150265350A1
Принадлежит: Terumo Corp

Disclosed is a treatment device for occluding a body lumen, including: an elongated body which can be inserted into the body lumen; a flat portion forming section which is supported by the elongated body, is expandable widthwise on a more distal side than the elongated body, and deforms the body lumen into a form having a flat portion at a distal portion of the flat portion forming section upon the expansion of the flat portion forming section within the body lumen; and an administering section which administers, toward the flat portion formed by the flat portion forming section, a treatment which acts to occlude the flat portion.

Подробнее
29-09-2016 дата публикации

SYSTEM AND METHOD FOR PULMONARY TREATMENT

Номер: US20160278845A1
Автор: Mayse Martin L.
Принадлежит:

Devices and methods for treating one or more pulmonary diseases while avoiding or minimizing injury to the esophagus and branches of the vagus nerve that run along the outside of the esophagus. The device includes at least one energy delivery element disposed on an elongate member and a means for protecting the esophagus and surrounding tissues, such as esophageal branches of the vagus nerve, during treatment. The energy delivery element is positionable to target at least one nerve in or around the tracheal wall when the elongate member is positioned in the trachea. Energy from the energy delivery element is delivered to the at least one nerve to treat pulmonary symptoms, conditions, and/or diseases, such as asthma, COPD, obstructive lung diseases, or other pulmonary diseases, while the protection means protects the esophagus and surrounding tissues from permanent damage. 1. A method of treating one or more pulmonary diseases while minimizing or preventing damage to an esophagus and esophageal branches of the vagus nerve of a patient , the method comprising:inserting an elongate member through at least a portion of a trachea;positioning an energy delivery element coupled to the elongate member proximate a treatment site in or along an airway;delivering energy from an active portion of the energy delivery element to the treatment site while protecting the esophagus and esophageal branches of the vagus nerve with minimal or no permanent damage to the esophagus and/or surrounding tissue.2. The method of claim 1 , wherein delivering energy while protecting the esophagus and esophageal branches of the vagus nerve comprises:delivering energy at a first power level from the active portion of the energy delivery element to the treatment site to create a first lesion covering a first portion of a circumference of the airway;moving the energy delivery element; anddelivering energy at a second power level from the active portion of the energy delivery element to the treatment ...

Подробнее
11-12-2014 дата публикации

System for optimized coupling of ablation catheters to body tissues and evaulation of lesions formed by the catheters

Номер: US20140364848A1

A system for diagnosis or treatment of tissue in a body is provided. The system includes an ablation catheter having a deformable, elongate shaft having proximal and distal ends. The catheter further includes an ablation delivery member disposed proximate the distal end of the shaft and configured to deliver ablation energy to ablate the tissue. In one embodiment, the ablation delivery member comprises an ablation electrode and may also be configured to generate a signal indicative of electrical activity in the tissue. The catheter further includes one or more sensing electrodes disposed proximate the ablation delivery member. The sensing electrodes are configured to generate signals indicative of electrical activity in the tissue. The system further includes an electronic control unit configured to control delivery of ablation energy from the ablation delivery member responsive to one or more of the generated signals indicative of electrical activity in the tissue.

Подробнее
27-09-2018 дата публикации

SURGICAL FORCEPS

Номер: US20180271588A1
Принадлежит:

A forceps includes a pair of shaft members, a pair of jaw members each including a distal body and a proximal flange, and a pair of electrode plates. The proximal flanges are engaged with the respective shaft members and pivotably coupled to each other such that pivoting the shaft members pivots the distal jaw bodies. The electrode plates each includes a tissue-contacting portion disposed on the distal body of the respective jaw member and a proximal extension portion extending at least partially through the proximal flange of the respective jaw member. The tissue-contacting portion and proximal extension portion of the first electrode plate are disposed in perpendicular planes relative to each other. Likewise, the tissue-contacting portion and proximal extension portion of the second electrode plate are disposed in perpendicular planes relative to each other. 120-. (canceled)21. An end effector assembly of a surgical instrument , comprising:first and second jaw members, the first jaw member including a first distal jaw body and a first proximal flange extending proximally from the first distal jaw body, the second jaw member including a second distal jaw body and a second proximal flange extending proximally from the second distal jaw body, the first and second proximal flanges of the first and second jaw members pivotably coupled with one another to enable pivoting of the distal jaw bodies of the first and second jaw members relative to one another between a spaced-apart position and an approximated position;a first electrode plate coupled to the first jaw member, the first electrode plate including a first tissue-contacting portion disposed on the first distal jaw body and a first proximal extension portion extending proximally from the first tissue-contacting portion at least partially through the first proximal flange, the first tissue-contacting portion and the first proximal extension portion disposed in perpendicular orientation relative to one another; anda ...

Подробнее
27-09-2018 дата публикации

CATHETER WITH DEFORMABLE DISTAL ELECTRODE

Номер: US20180271590A1
Принадлежит:

A catheter probe configured with a capability to present a larger tissue contact area or “footprint” for larger, deeper lesions, without increasing the french size of the catheter, especially its distal section, includes an elastically deformable electrode configured to adopt a neutral configuration and a tissue contact configuration. The deformable electrode comprising a hollow porous tube with a distal portion having a closed distal end, and a proximal portion defining an opening to an interior of the tube, where the distal tip end is received in the tube through the opening and the distal section is generally surrounded by tube, with the proximal portion being affixed to an outer surface of the distal section. In some embodiments, the closed distal end is shaped with a bulbous portion that can spread and widen to provide a larger surface contact area. 1. A catheter probe , comprising:a flexible elongated shaft;a distal section having a distal tip end, and an elastically deformable electrode configured to adopt a neutral configuration and a tissue contact configuration, the deformable electrode comprising a hollow porous tube with a distal portion having a closed distal end, and a proximal portion defining an opening to an interior of the tube, the distal tip end received in the tube through the opening and the distal section generally surrounded by tube;{'b': '1', 'wherein the closed distal end of the tube is spaced apart from the distal tip end and the distal portion of the tube has a lesser width W when the deformable electrode is in the neutral configuration, and'}{'b': '2', 'wherein the distal portion of the tube has a greater width W when the deformable electrode is in the tissue contact configuration.'}2. The catheter probe of claim 1 , wherein the distal portion has a preshaped bulbous configuration.3. The catheter probe of claim 1 , wherein the preshaped bulbous configuration has a continuous curvature.421. The catheter probe of claim 1 , wherein the ...

Подробнее
27-09-2018 дата публикации

Unfurling electrode devices

Номер: US20180271592A1
Принадлежит: COVIDIEN LP

Methods, systems, and devices for providing treatment to a tissue in body lumens are described. The system may include a catheter, an expansion member coupled with a distal portion of the catheter, an ablation structure including one or more longitudinal electrode segments, and an ablation structure support coupled to the ablation structure configured to at least partially unfurl as the expansion member expands and furl as the expansion member contracts. The ablation structure may include multiple separately wired and/or separately controlled longitudinal electrodes, longitudinal electrode zones, or both, such that each longitudinal electrode or longitudinal electrode zone may be selectively enabled or selectively disabled. In some instances, one or more springs are coupled to the ablation structure configured to promote unfurl or furl around the expansion member. In some instances, one or more protection elements are be positioned along the catheter.

Подробнее
27-08-2020 дата публикации

SYSTEM AND METHOD FOR PULMONARY TREATMENT

Номер: US20200268436A1
Автор: Mayse Martin L.
Принадлежит:

Devices and methods for treating one or more pulmonary diseases while avoiding or minimizing injury to the esophagus and branches of the vagus nerve that run along the outside of the esophagus. The device includes at least one energy delivery element disposed on an elongate member and a means for protecting the esophagus and surrounding tissues, such as esophageal branches of the vagus nerve, during treatment. The energy delivery element is positionable to target at least one nerve in or around the tracheal wall when the elongate member is positioned in the trachea. Energy from the energy delivery element is delivered to the at least one nerve to treat pulmonary symptoms, conditions, and/or diseases, such as asthma, COPD, obstructive lung diseases, or other pulmonary diseases, while the protection means protects the esophagus and surrounding tissues from permanent damage. 1inserting an elongate member through at least a portion of a trachea;positioning an energy delivery element coupled to the elongate member proximate a treatment site in or along an airway;delivering energy from an active portion of the energy delivery element to the treatment site while protecting the esophagus and esophageal branches of the vagus nerve with minimal or no permanent damage to the esophagus and/or surrounding tissue.. A method of treating one or more pulmonary diseases while minimizing or preventing damage to an esophagus and esophageal branches of the vagus nerve of a patient, the method comprising: This application is a continuation of application Ser. No. 15/177,012 filed Jun. 8, 2016, which is a continuation-in-part of U.S. patent application Ser. No. 13/081,406 filed Apr. 6, 2011, which claims the benefit of U.S. Provisional Application No. 61/321,346 filed Apr. 6, 2010, each of which is hereby fully incorporated herein by reference.The present invention generally relates to the field of pulmonary treatments.Pulmonary diseases are some of the most common medical conditions, ...

Подробнее
25-12-2014 дата публикации

Medical devices for renal nerve ablation having rotatable shafts

Номер: US20140378967A1
Принадлежит: Boston Scientific Scimed Inc

A medical device for renal denervation may include a catheter shaft including an outer shaft having a lumen formed therein and an inner shaft extending within the lumen of the outer shaft. The catheter may further include an expandable member having a proximal region coupled to a distal region of the outer shaft, and a distal region of the expandable member may be coupled to a distal region of the inner shaft. In some embodiments, one or more active electrodes may be disposed on an exterior surface of the expandable member and capable of providing the renal denervation treatment. In some embodiments, the inner shaft may be rotatable in relation to the outer shaft and/or the outer shaft may be rotatable in relation to the inner shaft.

Подробнее
25-12-2014 дата публикации

MEDICAL DEVICES FOR RENAL NERVE ABLATION

Номер: US20140378968A1
Принадлежит:

Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for ablation procedures. The medical device may include an elongate shaft having a distal region. An expandable member may be coupled to the distal region. One or more active electrode assemblies may be coupled to the expandable member. The one or more of the active electrode assemblies may include a resistive element adjacent the expandable member. The electrode assembly may include or may be used with microheaters. 1. A medical device for performing ablation procedures , comprising:a catheter shaft;an expandable member coupled to the catheter shaft;a flexible electrode assembly coupled to the expandable member, where the flexible electrode assembly includes one or more electrodes that each include a resistive member; anda control unit coupled to the flexible electrode assembly.2. The medical device of claim 1 , wherein the flexible electrode assembly includes a monopolar electrode assembly.3. The medical device of claim 1 , wherein the flexible electrode assembly includes a bipolar electrode assembly.4. The medical device of claim 1 , wherein one or more resistive member forms a microheater.5. The medical device of claim 1 , wherein the flexible electrode assembly is capable of localizing thermal energy around the resistive member without having to complete an electrical pathway to an exterior of a patient's body.6. The medical device of claim 1 , wherein direct current is passed through the resistive member to provide thermal energy to a target area.7. The medical device of claim 6 , wherein the control unit is configured to deliver between 0.1 volts to 50 volts of direct current to the flexible electrode assembly.8. The medical device of claim 1 , wherein the flexible electrode assembly includes one or more wires with a diameter less than 0.005 inches.9. The medical device of claim 1 , wherein the flexible electrode assembly includes ...

Подробнее
13-10-2016 дата публикации

SYSTEMS AND METHODS FOR ENDOMETRIAL ABLATION

Номер: US20160296277A1
Автор: Toth Akos, Truckai Csaba
Принадлежит:

A device for endometrial ablation having an elongated shaft with a working end comprising an expandable-contractable frame, a complaint energy-delivery surface carried by the frame, the surface and the frame being configured to engage against the interior of a patient's uterine cavity when the working end is inserted into the cavity and the frame is expanded. 1. A method for endometrial ablation comprising:expanding frame within a compliant energy-delivery surface to a planar triangular shape to engage the walls of a patient's uterine cavity;wherein the frame has flexible outer elements in lateral contact with the compliant surface and flexible inner elements not in said lateral contact, wherein the inner and outer elements have substantially dissimilar material properties.2. The method of claim 1 , wherein energy-delivery surface is configured for primary expansion in a lateral direction by the frame wherein axial movement of the inner elements moves the outer elements laterally.3. The method of claim 1 , wherein the inner elements have a higher spring constant than the outer elements.4. The method of claim 1 , wherein the inner elements have a plastic deformation range greater than the outer elements.5. The method of claim 1 , wherein the inner elements are configured to maintain their spring function at operating temperatures.6. The method of claim 1 , wherein the inner elements are formed from a precipitation hardenable stainless steel.7. The method of claim 1 , wherein the outer elements are 304 SS or 316 SS.8. The method of claim 1 , wherein the inner elements have a thickness greater than 0.012″.9. The method of claim 1 , wherein the outer elements have a thickness less than 0.012″.10. The method of claim 1 , wherein the inner elements have a thickness ranging between 0.012″ and 0.020″.11. The method of claim 1 , wherein the outer elements have a thickness ranging between 0.004″ and 0.012″.12. A method for endometrial ablation comprising:expanding frame ...

Подробнее
11-10-2018 дата публикации

Systems and methods for performing endometrial ablation

Номер: US20180289416A1
Принадлежит: Aegea Medical Inc

A method and system of providing therapy to a patient's uterus is provided, which can include any number of features. The method can include the steps of inserting a uterine device into the uterus and performing a uterine integrity test to determine that the uterus is intact and not perforated. If it is determined that the uterus is not perforated, a patency test can be performed to determine that the uterine device is not clogged or embedded in tissue. If the uterus is intact and the device is not clogged or embedded in tissue, the uterus can be treated with the uterine device, e.g., uterine ablation. Systems for performing these methods are also disclosed.

Подробнее
19-10-2017 дата публикации

Ablation catheters

Номер: US20170296266A1
Принадлежит: Shifamed Holdings LLC

Cardiac tissue ablation catheters including an inflatable and flexible toroidal or spherically shaped balloon disposed at a distal region of an elongate member, a flexible circuit carried by an outer surface of the balloon, the flexible circuit including, a plurality of flexible branches conforming to the radially outer surface of the balloon, each of the plurality of flexible branches including a substrate, a conductive trace carried by the substrate, and an ablation electrode carried by the substrate, the ablation electrode in electrical communication with the conductive trace, and an elongate shaft comprising a guidewire lumen extending in the elongate member and extending from a proximal region of the inflatable balloon to distal region of the inflatable balloon and being disposed within the inflatable balloon, wherein a distal region of the elongate shaft is secured directly or indirectly to the distal region of the inflatable balloon.

Подробнее
19-10-2017 дата публикации

MEDICAL SYSTEMS, DEVICES, AND RELATED METHODS

Номер: US20170296271A1
Автор: Chu Michael S.H.
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

A medical device may include a luminal elongate control member terminating in a first end effector. The medical device may further include a second end effector. The second end effector may be positioned within the luminal elongate control member. Further, the second end effector may be movable relative to the luminal elongate control member. Also, the medical device may be sheathless. 1. A medical device , comprising:a luminal elongate control member terminating in a first end effector; anda second end effector positioned within the luminal elongate control member and movable relative thereto,wherein the medical device is sheathless.2. The medical device of claim 1 , wherein each of the first end effector and the second end effector are independently actuatable.3. The medical device of claim 1 , further including a handle claim 1 , having:a main body; anda grip member,wherein the luminal elongate control member is fixedly coupled to the main body.4. The medical device of claim 1 , wherein first end effector includes a basket.5. The medical device of claim 4 , wherein the second end effector includes a laser fiber.6. The medical device of claim 1 , wherein the first end effector includes a snare.7. The medical device of claim 6 , wherein the second end effector includes a needle.8. A medical system claim 6 , comprising: a handle;', 'a shaft coupled to the handle; and', 'a port positioned on the handle and in fluid communication with a working channel of the shaft;, 'an insertion device having a luminal elongate control member terminating in a first end effector;', 'a second end effector positioned within the luminal elongate control member; and', 'a handle; and, 'a sheathless medical device havinga connector having a first end coupled to the handle of the medical device and a second end coupled to the port of the insertion device.9. The medical system of claim 8 , wherein the first end effector and the second end effector are independently moveable relative to one ...

Подробнее
26-10-2017 дата публикации

Non-Stick Monopolar Suction Coagulator

Номер: US20170303989A1
Автор: Jr. Lawrence T., Kirwan
Принадлежит:

A monopolar suction coagulator device is provided for use with a vacuum source and an electrosurgical generator to perform a coagulation procedure and an evacuation procedure at a surgical site. The device includes an active electrode portion at the distal end of a probe, and the probe is formed of a thermally conductive and electrically conductive, non-stick metal material along all or substantially all of its length, to aid in heat dissipation during a coagulation procedure. 1. A monopolar suction coagulator device for use with a vacuum source and an electrosurgical generator to perform a coagulation procedure and an evacuation procedure , the device comprising:a housing comprising a distal end and a proximal end, a suction port configured for connection to a vacuum line, and a cavity in the housing in communication with the suction port;a probe extending from the distal end of the housing;an active electrode portion disposed at a distal end of the probe, an electrical connection from the probe through the housing to the electrosurgical generator; anda suction channel formed within an interior of the probe from an opening at the distal end of the probe to an opening at a proximal end of the probe in communication with the cavity in the housing;wherein the probe is formed of at least a first material comprising a thermally conductive and electrically conductive non-stick metal, the first material extending along a length of the probe from the distal end toward the proximal end for at least 50% of the length of the probe.2. The device of claim 1 , wherein the probe is formed of the first material along all of the length of the probe.3. The device of claim 1 , wherein the probe comprises a cylindrical tube formed of the first material.4. The device of claim 1 , wherein the probe comprises a combination of metal materials claim 1 , the first material comprising a coating coaxially disposed on a further metal material.5. The device of claim 1 , wherein the first ...

Подробнее
25-10-2018 дата публикации

SURGICAL INSTRUMENT COMPRISING AN ELECTRODE

Номер: US20180303541A1
Принадлежит:

A surgical instrument can comprise a first electrode, a second electrode, and a retractable sheath. At least one of the electrodes can comprise an insulative jacket extending along the length thereof which can comprise a tissue stop for limiting the progression of the electrode into tissue. In various embodiments, a surgical instrument can comprise a first electrode, a second electrode, and a displaceable arc guard positioned between the electrodes. In certain embodiments, a surgical instrument can comprise an electrode including a flexible mesh configured to conform to the tissue against which it is positioned. 1. A surgical instrument , comprising:a shaft comprising a conductor; and a support member mounted to said shaft; and', 'a flexible mesh comprising an electrically conductive material, wherein said support member is configured to support at least a portion of said flexible mesh, and wherein said flexible mesh is in electrical communication with said conductor., 'an electrode, comprising2. The surgical instrument of claim 1 , wherein said flexible mesh comprises a substrate claim 1 , and wherein said electrically conductive material is coated on said substrate.3. The surgical instrument of claim 1 , wherein said flexible mesh comprises a substrate claim 1 , and wherein said electrically conductive material is perfused within said substrate.4. The surgical instrument of claim 1 , wherein said support member comprises a first portion and a second portion claim 1 , and wherein said flexible mesh extends between said first portion and said second portion.5. The surgical instrument of claim 1 , wherein said support member comprises a perimeter claim 1 , and wherein said flexible mesh is attached to said support member along said perimeter.7. The surgical instrument kit of claim 6 , wherein said flexible mesh comprises a substrate claim 6 , and wherein said electrically conductive material is coated on said substrate.8. The surgical instrument kit of claim 6 , ...

Подробнее
03-10-2019 дата публикации

ARRANGEMENT OF MULTI-CHANNEL BIPOLAR ELECRODE ZONES TO MINIMIZE LEAKAGE AND EDGE EFFECTS

Номер: US20190298430A1
Принадлежит:

Methods, apparatuses, and systems are described for minimizing various leakage effects of multi-zone ablation devices. Apparatuses may include an ablation device for treatment of tissue including an ablation structure with a plurality of bipolar electrode zones. Each of the zones may include an in-zone channel pair comprising a positive channel and a negative channel. The ablation structure may be configured such that, for any adjacent electrode zone pair comprising a first electrode zone and a second electrode zone adjacent to the first electrode zone, the positive channel of the first electrode zone is electrically distinct from the positive channel of the second electrode zone, and the negative channel of the first electrode zone is electrically distinct from the negative channel of the second electrode zone. Moreover, the ablation structure may be arranged such that a total number of electrically distinct channels that is less than twice a total number of the plurality of electrode zones. 1. A method of designing an ablation structure for treatment of tissue comprising three or more bipolar electrode zones , the method comprising:providing each electrode zone with an in-zone channel pair comprising a positive channel and a negative channel;limiting a total number of electrically distinct channels of the ablation structure such that the total number of electrically distinct channels is less than twice a total number of the three or more bipolar electrode zones;arranging the positive channels of each electrode zone such that, the positive channel of any electrode zone is electrically distinct from the positive channel of any adjacent electrode zone; andarranging the negative channels of each electrode zone such that the negative channel of any electrode zone is electrically distinct from the negative channel of any adjacent electrode zone.2. The method of claim 1 , wherein the ablation structure further comprises a plurality of shared-positive-channel electrode ...

Подробнее
12-11-2015 дата публикации

Catheter Assemblies Comprising a Direct Heating Element for Renal Neuromodulation and Associated Systems and Methods

Номер: US20150320475A1
Автор: Roman Turovskiy
Принадлежит: Medtronic Ardian Luxembourg SARL

Catheter apparatuses, systems, and methods for achieving renal neuromodulation by intravascular access are disclosed herein. One aspect of the present technology, for example, is directed to a treatment device having a direct heating element configured to be delivered to a renal blood vessel. The treatment device is selectively transformable between a delivery or low-profile state and a deployed state. The direct heating element is housed within an occlusion element which is sized and shaped so that the direct heating element contacts an interior wall of the occlusion element, an outer wall of which is simultaneously in contact with the inner wall of a renal blood vessel when the treatment assembly is in the deployed state. The direct heating element is configured to apply thermal energy to heat neural fibers that contribute to renal function.

Подробнее
02-11-2017 дата публикации

Pulsed radiofrequency ablation

Номер: US20170312008A1
Автор: Doron Harlev
Принадлежит: Affera Inc

Ablation systems and methods of the present disclosure are directed toward delivering pulsed radiofrequency (RF) energy to target tissue. The pulsations of the RF energy, combined with cooling at a surface of the target tissue, can advantageously promote local heat transfer in the target tissue to form lesions having dimensions larger than those that can be safely formed in tissue using non-pulsed RF energy under similar conditions.

Подробнее
02-11-2017 дата публикации

CATHETER SENSING AND IRRIGATING

Номер: US20170312420A1
Принадлежит:

Ablation systems of the present disclosure facilitate the safe formation of wide and deep lesions. For example, ablation systems of the present disclosure can allow for the flow of irrigation fluid and blood through an expandable ablation electrode, resulting in efficient and effective cooling of the ablation electrode as the ablation electrode delivers energy at a treatment site of the patient. Additionally, or alternatively, ablation systems of the present disclosure can include a deformable ablation electrode and a plurality of sensors that, in cooperation, sense the deformation of the ablation electrode, to provide a robust indication of the extent and direction of contact between the ablation electrode and tissue at a treatment site. 1. A catheter comprising:a catheter shaft having a proximal end portion and a distal end portion;an irrigation element positioned relative to the catheter shaft to direct irrigation fluid distal to the distal end portion of the catheter shaft; andan ablation electrode coupled to the distal end portion of the catheter shaft, the ablation electrode enveloping the irrigation element, and the ablation electrode including struts coupled to one another at joints to define collectively a plurality of cells, wherein each cell of the plurality of cells is bounded and the coupled struts are movable relative to one another such that a maximum radial dimension of the ablation electrode increases by at least a factor of two as the coupled struts move relative to one another to transition the ablation electrode from a compressed state, in the presence of external force, to an uncompressed state, in the absence of external force.2. The catheter of claim 1 , wherein the struts are in electrical communication with one another to form a single electrical conductor.3. The catheter of claim 1 , wherein the ablation electrode includes an inner portion and an outer portion claim 1 , opposite the inner portion claim 1 , and the inner portion is in fluid ...

Подробнее
09-11-2017 дата публикации

ESTIMATION AND MAPPING OF ABLATION VOLUME

Номер: US20170319258A9
Принадлежит: Biosense Webster (Israel) Ltd.

Tissue ablation systems and methods are provided, wherein a cardiac catheter incorporates a pressure detector for sensing a mechanical force against the distal tip when engaging an ablation site. Responsively to the pressure detector, a controller computes an ablation volume according to relationships between the contact pressure against the site, the power output of an ablator, and the energy application time. A monitor displays a map of the heart which includes a visual indication of the computed ablation volume. The monitor may dynamically display the progress of the ablation by varying the visual indication. 1. A method of ablation , comprising the steps of:inserting a probe into a body of a living subject;urging the probe into contact with a tissue in the body;determining a mechanical force that is exerted by the probe against the tissue; andapplying a specified dosage of energy for an application time and at a power level to the tissue for ablation thereof, wherein at least one of the application time of the dosage and the power level depend on the mechanical force.2. The method according to claim 1 , further comprising the step of prior to applying the specified dosage of energy claim 1 , reporting an indication of an expected ablation volume at the power level claim 1 , the application time and the mechanical force.3. The method according to claim 1 , wherein the probe has a distal end an axis and urging the probe comprises forming an angular deflection of the distal end with respect to the axis.4. The method according to claim 1 , further comprising the steps of calculating an ablation volume of the tissue as a function of the power level claim 1 , the mechanical force and the application time.5. The method according to claim 4 , further comprising the steps of:displaying a visual indication of the ablation volume; andresponsively to the visual indication controlling the ablation volume by varying at least one of the power level, the mechanical force and ...

Подробнее
09-11-2017 дата публикации

CATHETER ELECTRODE ASSEMBLIES AND METHODS OF CONSTRUCTION THEREOF

Номер: US20170319270A1
Принадлежит:

A family of catheter electrode assemblies includes a flexible circuit having a plurality of electrical traces and a substrate; a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the electrode. A non-contact electrode mapping catheter includes an outer tubing having a longitudinal axis, a deployment member, and a plurality of splines, at least one of the plurality of splines comprising a flexible circuit including a plurality of electrical traces and a substrate, a ring electrode surrounding the flexible circuit and electrically coupled with at least one of the plurality of electrical traces; and an outer covering extending over at least a portion of the ring electrode. A method of constructing the family of catheter electrode assemblies is also provided. 123.-. (canceled)24. A catheter comprising:an elongate shaft structure comprising a proximal portion and a distal portion; a flexible substrate;', 'an electrode;', 'an electrical trace coupled to the flexible substrate and the electrode; and', 'a biocompatible outer covering extending over at least a portion of the flexible substrate., 'wherein the distal portion comprises25. The catheter of claim 24 , wherein the biocompatible outer covering extends over at least a portion of the electrode.26. The catheter of claim 24 , wherein at least a portion of the electrode is exposed by the biocompatible outer covering.27. The catheter of claim 24 , further comprising a superelastic support member electrically isolated from the electrode.28. The catheter of claim 27 , wherein the superelastic support member includes nitinol.29. The catheter of claim 27 , further comprising a common structure extending along a length of the elongate shaft structure claim 27 , and wherein the superelastic support member comprises a protrusion extending from the common structure.30. The catheter of claim 24 ...

Подробнее
01-10-2020 дата публикации

FLEXIBLE CIRCUIT HAVING IMPROVED ADHESION TO A RENAL NERVE MODULATION BALLOON

Номер: US20200305973A1
Принадлежит:

A balloon for renal nerve modulation is disclosed. The balloon may include a polymer material forming a balloon wall having an outer surface and flexible circuits comprising a base selectively adhered to the exterior surface of the balloon wall. Adhesive is selectively applied to the outer surface of the balloon, to the flexible circuit or to both such that the adhesive is selectively deposited on the at least a portion of the at least two pads or on the at least a portion of the at least two pads and to a portion of the distal spline. The portion of the at least two pads or the portion of the at least two pads and a portion of the distal spline are adhered to the outer surface of the balloon and a remainder of the flexible circuit moves freely with respect to the outer surface of the balloon. 1. A balloon comprising:a balloon wall comprising an outer surface; anda flexible circuit disposed on the outer surface of the balloon wall, the flexible circuit comprising a base formed of a polymer material;wherein the base comprises patterned deformations comprising lines that are substantially perpendicular to an edge of the base; andwherein the outer surface of the balloon wall comprises patterned deformations comprising lines, at least portion of the lines of the outer surface of the balloon wall complimenting at least a portion of the lines of the patterned deformations of the base.2. The balloon of claim 1 , wherein the edge of the base includes at least one curve and the patterned deformations of the base include at least one end of at least one line perpendicular to the edge at the at least one curve.3. The balloon of claim 1 , wherein each of the lines of the patterned deformations of the base extend across a longitudinal axis of the flexible circuit.4. The balloon of claim 1 , wherein the patterned deformations of the base and the patterned deformations of the outer surface of the balloon wall each comprise laser induced micro patterns.5. The balloon of claim 1 , ...

Подробнее
26-11-2015 дата публикации

Systems and methods for performing endometrial ablation

Номер: US20150335380A1
Принадлежит: Aegea Medical Inc

A method and system of providing therapy to a patient's uterus is provided, which can include any number of features. The method can include the steps of inserting a uterine device into the uterus and performing a uterine integrity test to determine that the uterus is intact and not perforated. If it is determined that the uterus is not perforated, a patency test can be performed to determine that the uterine device is not clogged or embedded in tissue. If the uterus is intact and the device is not clogged or embedded in tissue, the uterus can be treated with the uterine device, e.g., uterine ablation. Systems for performing these methods are also disclosed.

Подробнее
17-11-2016 дата публикации

Devices and methods for transurethral bladder partitioning

Номер: US20160331450A1
Принадлежит: NEWURO BV

Systems, devices, and methods to treat a urinary bladder are disclosed. An expandable member is introduced and expanded in the urinary bladder to appose one or more elongate conductors on the outer surface of the expandable member against the inner wall of the urinary bladder. The one or more elongate conductors are used to create a predetermined pattern of electrically isolated tissue regions having reduced electrical propagation such that electrical propagation through the urinary bladder as a whole is reduced. A mucus layer may be removed from the inner bladder wall prior to the ablation. Ablation may be regulated by impedance measurement with the one or more elongate conductors. The urinary bladder may be filled with a fluid to facilitate the impedance measurement.

Подробнее
03-12-2015 дата публикации

NERVE MODULATION DEVICES WITH COOLING CAPABILITIES

Номер: US20150342673A1
Принадлежит: BOSTON SCIENTIFIC SCIMED, INC.

Medical devices and methods and making and using medical devices are disclosed. An example medical device may include an elongate shaft having a distal region. An expandable member may be coupled to the distal region. The expandable member may be capable of shifting between a first configuration and an expanded configuration. The expandable member may have a distal portion, a proximal portion, and a body portion disposed between the distal portion and the proximal portion. The body portion may have a projection formed therein that projects radially outward from the body portion. A flexible electrode assembly may be coupled to the projection. 1. A medical device , comprising:an elongate shaft having a distal region;an expandable member coupled to the distal region, the expandable member being capable of shifting between a first configuration and an expanded configuration;wherein the expandable member has a distal portion, a proximal portion, and a body portion disposed between the distal portion and the proximal portion;wherein the body portion has a projection formed therein that projects radially outward from the body portion; anda flexible electrode assembly coupled to the projection.2. The medical device of claim 1 , wherein the expandable member includes an expandable balloon.3. The medical device of claim 1 , wherein the projection includes a circumferential ring disposed along the expandable member.4. The medical device of claim 1 , wherein the projection includes a helical ridge disposed along the expandable member.5. The medical device of claim 1 , further comprising one or more additional projections.6. The medical device of claim 5 , wherein at least some of the one or more additional projections include an additional flexible electrode assembly.7. The medical device of claim 1 , wherein the flexible electrode assembly includes a monopolar electrode.8. The medical device of claim 1 , wherein the flexible electrode assembly includes a pair of bipolar ...

Подробнее
10-12-2015 дата публикации

Endoscopic device

Номер: US20150351612A1
Автор: Daniel Shats
Принадлежит: Individual

A tool for an endoscope comprises an elongated shaft including a proximal end and a distal end, wherein the elongated shaft comprises a tubular member with an interior channel extending from the distal end toward the proximal end and a one or more perforations in the tubular member that are spaced from the distal end, the one or more perforations providing fluid communication between an exterior of the elongated shaft and the interior channel.

Подробнее
22-11-2018 дата публикации

SWIVEL INSTRUMENT WITH FLEX CIRCUIT

Номер: US20180333194A1
Принадлежит:

An electrical instrument includes a proximal section, a distal section, and a flex circuit. The distal section is coupled to the proximal section at a swivel interface to enable rotational independence of the distal section relative to the proximal section. The flex circuit spans the swivel interface between the proximal section and the distal section and provides electrical communication between the proximal section and the distal section even when one of the proximal section and the distal section is rotated relative to the other. 1. An electrical instrument with rotational capabilities , the instrument comprising:a proximal section;a distal section coupled to the proximal section at a swivel interface to enable rotational independence of the distal section relative to the proximal section; anda flex circuit spanning the swivel interface between the proximal section and the distal section, the flex circuit being configured to provide electrical communication between the proximal section and the distal section even when one of the proximal section and the distal section is rotated relative to the other.2. The electrical instrument of claim 1 , wherein the flex circuit comprises a plurality of identifiable sections.3. The electrical instrument of claim 2 , wherein the plurality of identifiable sections include a first linear section claim 2 , a serpentine section claim 2 , and a second linear section.4. The electrical instrument of claim 3 , wherein the first linear section extends from the distal section claim 3 , across the swivel interface claim 3 , and into the proximal section.5. The electrical instrument of claim 3 , wherein the serpentine section and the second linear section are disposed within the proximal section.6. The electrical instrument of claim 1 , wherein the swivel interface comprises:a channeled section on one of the proximal section and the distal section; anda radial extension on the other of the proximal section and the distal section, wherein ...

Подробнее
14-12-2017 дата публикации

RADIO-FREQUENCY ABLATION CATHETER HAVING SPIRAL STRUCTURE AND DEVICE THEREOF

Номер: US20170354462A1
Принадлежит:

Disclosed are a radio-frequency ablation catheter having a spiral structure and device thereof. The radio-frequency ablation catheter has an elongated catheter body. A spiral electrode support is arranged at the front end of the catheter body. Multiple electrodes are arranged on the electrode support. A control handle is arranged at the rear end of the catheter body. Wall-attachment adjusting wires having various structures can be arranged in the radio-frequency ablation catheter, so that the radio-frequency ablation catheter having a spiral structure can be adapted to target vessels of different diameters, and so that the electrodes on the electrode support have a good wall-attachment state. 1. A radio-frequency ablation catheter having a spiral structure , comprising an elongated catheter body , wherein an electrode support of a spiral shape is disposed at a front end of the catheter body , multiple electrodes are disposed on the electrode support , and a control handle is disposed at a rear end of the catheter body , whereina slidable support wall-attachment adjusting wire is disposed in one lumen in the electrode support and the catheter body, and the support wall-attachment adjusting wire consists of a flexible section that is far away from the control handle and a rigid section that is close to the control handle;a head end of the support wall-attachment adjusting wire penetrates through the electrode support, then is limited at the outside of the electrode support, and can move, relative to a far end of the electrode support, towards a direction that is far away from the catheter; a tail end of the support wall-attachment adjusting wire penetrates through the catheter body and is fixed on the control handle; and the control handle is used to control the support wall-attachment adjusting wire to move forward and backward.2. (canceled)3. The radio-frequency ablation catheter having a spiral structure according to claim 1 , whereinwhen the support wall- ...

Подробнее
14-12-2017 дата публикации

FLEXIBLE TIP CATHETER WITH EXTENDED FLUID LUMEN

Номер: US20170354797A1
Принадлежит:

A lumen extension member is provided for a catheter having a catheter body and an elongate electrode coupled to the catheter body. The elongate electrode defines an electrode lumen extending therethrough. The lumen extension member is positioned within the electrode lumen and is coupled to the catheter body. The lumen extension member includes a tubular member including a sidewall and at least one opening that extends through the sidewall. 120-. (canceled)21. A catheter comprising:a catheter body comprising a distal portion;a tip assembly defining a tip lumen extending therethrough, said tip assembly coupled to said catheter body distal portion;a lumen extension member fixedly coupled to said catheter body distal portion, said lumen extension member defining a lumen and configured to flex;a proximal opening extending through said lumen extension member, said proximal opening in fluid communication with said lumen extension member lumen; anda distal opening extending through said lumen extension member, said distal opening in fluid communication with said lumen extension member lumen, wherein a distal portion of said lumen extension member is positioned in the tip lumen and is spaced from said tip assembly when said tip assembly is in an at rest position.22. A catheter in accordance with claim 21 , wherein said lumen extension member comprises a proximal portion having a first inner diameter and the distal portion has a second inner diameter that is different from the first inner diameter.23. A catheter in accordance with claim 21 , wherein said lumen extension member further includes a plurality of additional openings extending therethrough claim 21 , said plurality of additional openings extending along a longitudinal length of said lumen extension member.24. A catheter in accordance with claim 21 , wherein said lumen extension member has a substantially uniform geometry extending along a longitudinal length thereof.25. A catheter in accordance with claim 21 , ...

Подробнее
20-12-2018 дата публикации

APPARATUS AND METHOD FOR SELF-GUIDED ABLATION

Номер: US20180360536A1
Принадлежит:

An ablation catheter comprises an elongate catheter body and a branch electrode element. The elongate catheter body has a central axis, a distal end, and a proximal end. The elongate catheter body is configured to be steered within a heart chamber. The branch electrode element has a base end and a working end or tip. The base end is secured to the elongate catheter body at a location spaced proximally of the distal end and an effector on the working end. The branch electrode element is configured to evert when the distal end of the elongate catheter body is in a pulmonary vein ostium or os so that the effector can be selectively engaged against locations surrounding the pulmonary vein os which differ in radial direction and distance. One or more of linear or curved ablation patterns are generated on tissue adjacent the pulmonary vein os with the effector. 1. An ablation catheter comprising:an elongate catheter body having a central axis, a distal end, and a proximal end, said elongate catheter body configured to be steered within a heart chamber; anda branch electrode element having a base end and a working end, wherein the base end is secured to the elongate catheter body at a location spaced proximally of the distal end and an effector on the working end,wherein the branch electrode element is configured to evert when the distal end of the elongate catheter body is in a pulmonary vein os so that the effector can be selectively engaged against locations surrounding the pulmonary vein os which differ in radial direction and distance.2. The ablation catheter of claim 1 , wherein the branch electrode element is curved when everted.3. (canceled)4. The ablation catheter of claim 1 , further comprising a constraint coupled to the branch electrode element to adjust an amount of eversion of the branch electrode element.5. The ablation catheter of claim 4 , wherein the constraint is configured to be translated relative to one or more of the elongate catheter body or the ...

Подробнее
28-12-2017 дата публикации

CATHETER SYSTEM AND ELECTRODE ASSEMBLY FOR INTRAPROCEDURAL EVALUATION OF RENAL DENERVATION

Номер: US20170367756A1
Принадлежит:

The present disclosure provides catheter systems, electrode assemblies, and methods for electrically stimulating one or more points about the circumference of the renal artery to provide real time intraprocedural operational feedback to the operator of a renal denervation procedure to allow for more precise and thorough ablation of the renal artery and better patient outcomes. In many embodiments, an electrode assembly is provided that includes multiple splines that extend from an insulated proximal hub to an insulated distal hub and are interconnected to an electrical wire to allow the splines to independently function as electrical stimulation electrodes. The electrically active splines can then be energized at one or more desired points during a renal denervation procedure to provide operational feedback. 1. A catheter system comprising:a catheter shaft; andan electrode assembly carried by the catheter shaft and including a proximal hub, a distal hub, and a first spline extending from the proximal hub to the distal hub, wherein the first spline includes a first ablation electrode thereon; andwherein the first spline is interconnected with an electrical wire to allow the first spline to function as a stimulation electrode.2. The catheter system of claim 1 , wherein the first hub and the second hub are constructed from an electrically insulating material.3. The catheter system of claim 2 , wherein the insulating material is a high temperature liquid crystal polymer.4. The catheter system of claim 1 , wherein the first spline and the first ablation electrode are constructed from the same material.5. The catheter system of claim 4 , wherein the first spline and the first ablation electrode are constructed from a metal alloy of nickel and titanium.6. The catheter system of claim 1 , further comprising a second spline that includes a second ablation electrode.7. The catheter system of claim 6 , wherein the second spline is interconnected with an electrical wire to ...

Подробнее
28-12-2017 дата публикации

SYSTEMS AND METHODS FOR TREATING TISSUE REGIONS OF THE BODY

Номер: US20170367757A1
Принадлежит: Mederi Therapeutics Inc

Systems and methods deploy a therapeutic or diagnostic element into contact with a body tissue region. The systems and methods can sense position of the therapeutic or diagnostic element relative to a targeted tissue region without direct or indirect visualization, by sensing fluid pressure in a fluid path having an outlet located at or near the therapeutic or diagnostic element. The systems and methods can also inflate the therapeutic or diagnostic element during use, while taking steps to avoid over-inflation and/or while dynamically monitoring the pressure conditions within the expanded element. 111-. (canceled)12. A method for sensing position of a device relative to a high pressure zone within a body lumen of a patient based on fluid pressure detection for treating GERD , the method comprising the steps of:a) providing a device having an operative or diagnostic element for treating the lower esophageal sphincter for treating GERD, an inflatable balloon, a an irrigation lumen forming a fluid path positioned external of the balloon to convey fluid to an internal circumferential region of a sphincter at a plurality of radially spaced regions, and a fluid outlet to body tissue located at or near the operative or diagnostic element, the operative or diagnostic element includes a basket structure having a plurality of arms and an electrode element movable within the plurality of arms, the fluid outlet communicating with the fluid path to output fluid to a body region where tissue contact by the basket structure is intended, the irrigation lumen forming the fluid path extending through the arms of the basket structure;b) inserting the device into the body region of the patient;c) while the balloon is in a collapsed condition, providing pressurized fluid through the fluid path of the device to exit the fluid outlet at or near the operative or diagnostic element so the fluid comes into contact with body tissue as the device is moved, the fluid outlet including a ...

Подробнее