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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

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Мониторинг СМИ

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

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 610. Отображено 100.
05-07-2012 дата публикации

BRAID WITH INTEGRATED SIGNAL CONDUCTORS

Номер: US20120172714A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A method, including incorporating a conducting wire into a tubular braid consisting of a multiplicity of supporting wires, and covering the tubular braid with a sheath. The method further includes identifying a location of the conducting wire within the tubular braid and attaching an electrode through the sheath to the conducting wire at the location. 1. A method , comprising:incorporating a conducting wire into a tubular braid comprising a multiplicity of supporting wires;covering the tubular braid with a sheath;identifying a location of the conducting wire within the tubular braid; andattaching an electrode through the sheath to the conducting wire at the location.2. The method according to claim 1 , wherein the tubular braid encloses an internal volume claim 1 , and wherein the sheath is opaque to a human eye when illuminated by radiation external to the sheath claim 1 , and wherein identifying the location comprises:illuminating the tubular braid from the internal volume, so as to render the conducting wire and the supporting wires visible through the sheath; andidentifying the location of the conducting wire within the tubular braid while the tubular braid is illuminated from the internal volume.3. The method according to claim 2 , wherein illuminating the tubular braid comprises inserting a fiber optic into the internal volume claim 2 , and injecting optical illumination into the fiber optic.4. The method according to claim 1 , wherein the conducting wire comprises a helix having a pitch P claim 1 , and wherein identifying the location of the conducting wire comprises identifying an initial position of the conducting wire within the tubular braid claim 1 , and determining the location of the conducting wire in response to the pitch P.5. The method according to claim 4 , wherein identifying the location comprises determining an angle for rotation of the tubular braid in response to the pitch and the identified initial position.6. The method according to claim 1 ...

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Номер записи: 1
20-06-2013 дата публикации

SENSING CONTACT OF ABLATION CATHETER USING DIFFERENTIAL TEMPERATURE MEASUREMENTS

Номер: US20130158548A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Papaioannou Athanassios
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

Tissue ablation is carried out using insertion tube having at least one ablation electrode, a first temperature sensor disposed on the distal portion sufficiently proximate the ablation electrode to detect heat generated during the ablation procedure, a second temperature sensor disposed on the distal portion sufficiently distant from the ablation electrode to be unable to detect the heat, and electronic logic circuitry linked to the first temperature sensor and the second temperature sensor and programmed to compute a temperature differential between respective temperatures sensed by the first temperature sensor and the second temperature sensor when conveying the electromagnetic energy. Satisfactory contact status between the ablation electrode and the target tissue is indicated when the temperature differential exceeds a predetermined threshold. 1. A method for treatment , comprising:bringing a probe into contact with a target tissue in a body of a subject, the probe having first and second temperature sensors on a distal portion of the probe and an ablation electrode thereon, the first and second temperature sensors being disposed on the distal portion, the second temperature sensor being spaced apart from the first temperature sensor such that when the ablation electrode is operationally engaged with the target tissue, the second temperature sensor is less responsive to heat generated at an ablation site comprising the target tissue than the first temperature sensor;applying energy through the ablation electrode to ablate the target tissue in the body;reading the first and second temperature sensors in order to compute a temperature difference therebetween; anddetermining the contact to be sufficient for the treatment if the temperature difference is greater than a predetermined threshold.2. The method according to claim 1 , wherein the probe is a lasso catheter.3. The method according to claim 1 , wherein computing the temperature difference comprises ...

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Номер записи: 2
21-11-2013 дата публикации

Guide wire with position sensing electrodes

Номер: US20130310673A1
Автор: Andres Claudio Altmann, Assaf Govari, Christopher Thomas Beeckler
Принадлежит: Biosense Webster Israel Ltd

An apparatus includes a guide wire configured to be inserted into a passage of a living body, and at least one electrical conductor and electrical insulation covering a surface of the conductor with a gap formed in the electrical insulation at a predefined position on the guide wire. A processor is configured to measure an electrical impedance of the body between the conductor at the gap and one or more electrodes fixed to the body, and to calculate a location of the gap within the passage in the body in response to the measured impedance.

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Номер записи: 3
26-12-2013 дата публикации

IRRIGATED ELECTRODES WITH ENHANCED HEAT CONDUCTION

Номер: US20130345698A1
Автор: Beeckler Christopher Thomas, Garcia Ariel, Govari Assaf, Papaioannou Athanassios
Принадлежит:

A catheter adapted for insertion into a body of a subject has at least one electrode disposed on its distal section. the electrode is coupled to an energy source to ablate tissue that is placed in contact with the electrode. The electrode has a wall with a plurality of perforations formed therethrough, and has edges defining a peripheral section that is adjacent the edges and a central section remote from the edges, wherein the wall of the peripheral section is thicker than the wall of the central section. A lumen passing through the insertion tube is coupled to deliver a fluid to the tissue via the perforations. In operation, the electrode functions as an effective heat sink. 1. A medical device , comprising:an insertion tube, having a distal section for insertion into a body of a subject;at least one electrode disposed on the distal section of the insertion tube and coupled to an energy source to apply energy to tissue inside the body, the electrode having an outer surface and a wall with a plurality of perforations formed therethrough, the electrode having edges defining a peripheral section that is adjacent the edges and a central section remote from the edges, wherein the wall of the peripheral section is thicker than the wall of the central section; anda lumen passing through the insertion tube and coupled to deliver a fluid to the tissue via the perforations.2. The device according to claim 1 , wherein the wall continually and gradually thickens from a point on the central section toward the peripheral section.3. The device according to claim 1 , wherein the wall thickens in discrete stages from the central section toward the peripheral section.4. The device according to claim 1 , wherein the wall of the central section has a uniform thickness.5. The device according to claim 1 , wherein the perforations have diameters are between 0.05 mm and 2.5 mm.6. The device according to claim 5 , wherein the diameters are between 0.5 and 2.5 mm.7. The device according ...

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Номер записи: 4
02-01-2014 дата публикации

CATHETER WITH SYNTHETIC APERTURE MRI SENSOR

Номер: US20140005526A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Ephrath Yaron, Govari Assaf, Schwartz Yitzhack
Принадлежит:

A medical probe, including a flexible insertion tube having a distal end for insertion into a body cavity. An array of spatially separated coils is positioned within the distal end. A processor is configured to process respective signals generated by the coils in response to magnetic resonance of tissue in the body cavity, and to process the signals while applying a phase delay responsive to a separation between the coils so as to image the tissue. 1. A medical probe , comprising:a flexible insertion tube having a distal end for insertion into a body cavity;an array of spatially separated coils positioned within the distal end; anda processor, configured to process respective signals generated by the coils in response to magnetic resonance of tissue in the body cavity, and to process the signals while applying a phase delay responsive to a separation between the coils so as to image the tissue.2. The medical probe according to claim 1 , wherein the coils are planar claim 1 , and wherein respective planes of the coils comprise a common plane.3. The medical probe according to claim 2 , wherein the tissue lies in the common plane so that the signals generated by the coils are a maximum.4. The medical probe according to claim 1 , wherein the processor is configured to determine the phase delay responsive to a direction of the tissue with respect to the distal end.5. The medical probe according to claim 1 , wherein the processor is configured to determine the phase delay responsive to a location of the tissue with respect to the distal end.6. The medical probe according to claim 1 , and comprising a position sensor located in the distal end claim 1 , and wherein the processor is configured to determine a position of the distal end in response to a position signal from the position sensor and to determine the phase delay responsive to the position.7. The medical probe according to claim 1 , wherein at least one of the coils is configured to provide a position signal for ...

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Номер записи: 5
03-04-2014 дата публикации

MRI CATHETER WITH RESONANT FILTER

Номер: US20140094684A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Papaioannou Athanassios
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A medical probe includes a flexible insertion tube having a distal end for insertion into a body cavity and having a proximal end. The probe further includes an electrode attached to the distal end of the insertion tube and configured to make electrical contact with tissue in the body cavity. An electrical lead runs through the insertion tube between the distal and proximal ends. In addition a coil is electrically coupled between the electrode and the lead in the insertion tube so as to define a resonant circuit having a resonant frequency in a range between 1 MHz and 300 MHz. 1. A medical probe , comprising:a flexible insertion tube having a distal end for insertion into a body cavity and having a proximal end;an electrode attached to the distal end of the insertion tube and configured to make electrical contact with tissue in the body cavity;an electrical lead running through the insertion tube between the distal and proximal ends; anda coil electrically coupled between the electrode and the lead in the insertion tube so as to define a resonant circuit having a resonant frequency in a range between 1 MHz and 300 MHz.2. The medical probe according to claim 1 , wherein the distal end is configured to function in a magnetic resonant imaging scanner operating at the resonant frequency.3. The medical probe according to claim 1 , wherein the coil is located in the distal end.4. The medical probe according to claim 1 , and comprising an irrigation tube coupled to the electrode claim 1 , and wherein the coil surrounds and is in contact with the tube.5. The medical probe according to claim 4 , wherein the irrigation tube is configured to convey irrigation fluid therethrough claim 4 , so as to cool the coil.6. The medical probe according to claim 1 , wherein the coil is located in the distal end and is configured to generate a signal in response to a magnetic field present at the coil claim 1 , and wherein the signal is representative of a position of the distal end.7. The ...

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Номер записи: 6
03-01-2019 дата публикации

Ultrasound Transducers on Predetermined Radii of Balloon Catheter

Номер: US20190000544A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

An inflatable balloon assembly is deployable through the lumen of a probe. The balloon assembly has a plurality of ablation electrodes arranged circumferentially on the balloon about its longitudinal axis, and a plurality of ultrasound transducers circumferentially distributed on the balloon along at least one of its latitudes. The probe is connectable to circuitry configured for powering the ablation electrodes and processing signals from the transducers. 1. An apparatus comprising:a probe having a distal portion and a lumen;an inflatable balloon deployable through the lumen beyond the distal portion, the balloon having a surface wall, a longitudinal axis and latitudes between an equator and a distal pole on the surface wall;a plurality of ablation electrodes arranged circumferentially on the balloon about the longitudinal axis; anda plurality of ultrasound transducers circumferentially distributed on the balloon along one of the latitudes; wherein the probe is connectable to circuitry configured for powering the ablation electrodes and processing signals from the transducers.2. The apparatus according to claim 1 , further comprising a substrate configured as a plurality of longitudinal strips circumferentially distributed on the balloon wherein the ablation electrodes are disposed on the strips.3. The apparatus according to claim 2 , wherein the strips and the transducers are superimposed.4. The apparatus according to claim 1 , wherein the ablation electrodes and the transducers are superimposed.5. The apparatus according to claim 1 , wherein the transducers are circumferentially distributed as a first set of transducers at a first latitude and a second set of transducers at a second latitude.6. The apparatus according to claim 5 , wherein there are ten ablation electrodes claim 5 , and the first set of transducers and the second set of transducers each comprise five transducers.7. The apparatus according to claim 5 , wherein the first latitude is at 30° above the ...

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Номер записи: 7
02-01-2020 дата публикации

Catheter Elements for Bond-Strength Enhancement

Номер: US20200001042A1
Автор: Beeckler Christopher Thomas, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A catheter manufacturing method includes the step of providing a hollow cylindrical part of a catheter, having a longitudinal axis, to be bonded to a given part along respective edge surfaces of the hollow cylindrical and the given parts. One or more undercut structures that are disposed circumferentially with respect to the longitudinal axis and also generally parallel to the longitudinal axis, the undercut structures having a radial orientation with respect to the longitudinal axis, are formed at least in the edge surface of the hollow cylindrical part. The hollow cylindrical part and the given part are connected using the undercut structures. 1. A catheter manufacturing method comprising the steps of:providing a hollow cylindrical part of a catheter, having a longitudinal axis, to be bonded to a given part along respective edge surfaces of the hollow cylindrical and the given parts;forming at least in the edge surface of the hollow cylindrical part one or more undercut structures that are disposed circumferentially with respect to the longitudinal axis and also generally parallel to the longitudinal axis, the undercut structures having a radial orientation with respect to the longitudinal axis; andconnecting the hollow cylindrical part and the given part using the undercut structures.2. The manufacturing method according to claim 1 , wherein the step of connecting comprises bonding the hollow cylindrical part and the given part with a bonding material that fills the undercut structures.3. The manufacturing method according to claim 1 , wherein the step of forming comprises forming the undercut structures both in the hollow cylindrical part surface and in the given part surface claim 1 , wherein the given part is another hollow cylindrical part.4. The manufacturing method according to claim 3 , wherein the hollow cylindrical part and the other hollow cylindrical part are configured to operate as a coupler and as a spring.5. The manufacturing method according to ...

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Номер записи: 8
21-01-2016 дата публикации

ELECTRO-OPTICAL CONNECTOR WITH HOT ELECTRICAL CONTACT PROTECTION

Номер: US20160018602A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

A cable connector, including a housing having a base and a lip, which surrounds the base and defines an aperture configured to receive a mating plug. The cable connector also includes a plurality of electrical contacts enclosed by the housing and configured to convey electrical signals, the electrical contacts having respective first proximal and first distal ends, the first proximal ends being implanted in the base so that the first distal ends are recessed within the aperture at a first distance from the base. The cable connector additionally includes one or more optical fiber terminals containing end portions of respective optical fibers configured to convey optical signals and having respective second proximal and second distal ends, the second proximal ends being implanted in the base so that the second distal ends are recessed within the aperture at a second distance from the base, which is greater than the first distance.

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Номер записи: 9
17-02-2022 дата публикации

BALLOON CATHETER HAVING ABLATION AND RETURN ELECTRODES

Номер: US20220047327A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A catheter includes an expandable frame for insertion into an organ of a patient, one or more first electrodes, and a second electrode. The one or more first electrodes are disposed on the expandable frame at one or more first positions for placing in contact with a target tissue of the organ, and are configured to perform one or both of: (i) sensing one or more electrical signals from the target tissue, and (ii) applying one or more ablation pulses to the target tissue. The second electrode is disposed within an internal volume of the expandable frame, at a second position that is not in contact with the target tissue while the one or more first electrodes contact the target tissue, and is configured to serve as a return or common electrode for the electrical signals. 1. A catheter , comprising:an expandable frame for insertion into an organ of a patient;one or more first electrodes, which are disposed on the expandable frame at one or more first positions in contact with a target tissue of the organ, and are configured to perform one or both of: (i) sensing one or more electrical signals from the target tissue, and (ii) applying one or more ablation pulses to the target tissue; anda second electrode, which is disposed within an internal volume of the expandable frame, at a second position that is not in contact with the target tissue while the one or more first electrodes contact the target tissue, and is configured to serve as a return or common electrode for the electrical signals.2. The catheter according to claim 1 , and comprising an ablation power source claim 1 , which is electrically connected to the catheter and is configured to apply one or more unipolar ablation pulses to the one or more first electrodes.3. The catheter according to claim 1 , wherein the organ comprises a patient heart claim 1 , and wherein the one or more electrical signals comprise one or more unipolar intra-cardiac electrical signals sensed from the heart.4. The catheter according to ...

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Номер записи: 10
04-02-2021 дата публикации

Bubble Detector on Proximal End of Catheter with Fail-Safe Mechanism

Номер: US20210030465A1
Автор: Algawi Yehuda, Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A system includes a probe, a processor, and a bubble detector. The probe is configured for insertion into a lumen of a patient and is coupled to an irrigation pump. The processor is configured to control delivery of irrigation fluid to the probe by turning on and controlling the irrigation pump. The bubble detector is coupled to a proximal portion of the probe. In response to the irrigation pump being turned on, the bubble detector is configured to automatically start detection of gas bubbles in the irrigated fluid, and transmit fail-safe signals indicating fail-safe bubble detection is operational. The processor is further configured to monitor the fail-safe signals and, in absence of fail-safe signals, to automatically disable delivery of the irrigation fluid. 1. A system , comprising:a probe for insertion into a lumen of a patient, wherein the probe is coupled to an irrigation pump;a bubble detection sub-system disposed proximate an outlet of the irrigation pump;a processor, which is configured to control delivery of irrigation fluid to the probe by turning on and controlling the irrigation pump; automatically start detection of gas bubbles in the irrigated fluid; and', 'transmit fail-safe signals indicating fail-safe bubble detection is operational; and, 'a bubble detector coupled to a proximal portion of the probe, wherein, in response to the irrigation pump being turned on, the bubble detector is configured towherein the processor is further configured to monitor the fail-safe signals and, in absence of fail-safe signals, to automatically disable delivery of the irrigation fluid.2. A system , comprising:a probe for insertion into a lumen of a patient, wherein the probe is coupled to an irrigation pump;a processor, which is configured to control delivery of irrigation fluid to the probe by turning on and controlling the irrigation pump; automatically start detection of gas bubbles in the irrigated fluid; and', 'transmit signals indicating bubble detection is ...

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Номер записи: 11
24-02-2022 дата публикации

Devices and methods for an expandable assembly catheter

Номер: US20220054192A1
Автор: Athanassios Papaioannou, Christopher Thomas Beeckler, Joseph Thomas Keyes, Kevin Justin HERRERA
Принадлежит: Biosense Webster Israel Ltd

A catheter apparatus includes an elongated deflectable element including a distal end, a coupler connected to the distal end, a pusher including a distal portion, and configured to be advanced and retracted through the deflectable element, and an expandable assembly including flexible polymer circuit strips, each strip including electrodes disposed thereon. The strips can be configured to bow radially outward when the pusher is retracted expanding the expandable assembly from a collapsed form to an expanded form. A covering can at least partially enclose the flexible polymer circuit strip and the multiple electrodes. The covering can include a plurality of apertures at each electrode so that a portion of the conductive surface of each electrode is exposed through each aperture.

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Номер записи: 12
18-02-2021 дата публикации

Mixed electroanatomical map coloring tool having draggable geodesic overlay

Номер: US20210050091A1
Автор: Amiram Sheiner, Assaf COHEN, Assaf Govari, Christopher Thomas Beeckler, Illya Shtirberg, Itai Doron
Принадлежит: Biosense Webster Israel Ltd

A method includes receiving two or more surface representations of at least a portion of an organ of a patient. The two or more received surface representations are registered one with the other. One of the surface representations is selected as a base map. A draggable geodesic region is generated for at least one of the two or more surface representations not selected as a base map, wherein the geodesic region is configured to follow varying anatomy as the region is dragged over the base map. The draggable geodesic region is overlaid on the base map to generate a mixed multilayer representation, and the mixed multilayer representation is presented to a user.

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Номер записи: 13
03-03-2022 дата публикации

Proximal Electrode Cooling

Номер: US20220061913A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

In one embodiment, a medical system includes a catheter configured to be inserted into a body part of a living subject, and including a deflectable element having a distal end, an expandable distal end assembly disposed at the distal end of the deflectable element, and including a plurality of electrodes, and configured to expand from a collapsed form to an expanded deployed form, a proximal electrode disposed at the distal end of the deflectable element proximally to the expandable distal end assembly, and extending circumferentially around the deflectable element, and including irrigation holes through which to irrigate the body part, and an irrigation tube disposed in the deflectable element and configured to be in fluid communication with the irrigation holes of the proximal electrode. 1. A medical system comprising a catheter configured to be inserted into a body part of a living subject , and including:a deflectable element extending along a longitudinal axis from a proximal portion to a distal end;an expandable distal end assembly disposed proximate the distal end of the deflectable element, and comprising a plurality of electrodes disposed about the longitudinal axis, and configured to expand from a collapsed form to an expanded deployed form;a proximal electrode disposed proximate the distal end of the deflectable element adjacent to the expandable distal end assembly, and extending circumferentially around the deflectable element, and including irrigation holes through which irrigation fluid is provided thereto; andan irrigation tube disposed in the deflectable element and configured to be in fluid communication with the irrigation holes of the proximal electrode.2. The system according to claim 1 , wherein the expandable distal end assembly includes at least one of: an expandable basket comprising a plurality of splines claim 1 , the electrodes being disposed on the splines; or an inflatable balloon with the electrodes disposed thereon.3. The system ...

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Номер записи: 14
25-02-2021 дата публикации

BRAIN CLOT CHARACTERIZATION USING OPTICAL FIBERS HAVING DIFFUSIVE ELEMENTS

Номер: US20210052201A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Papaioannou Athanassios
Принадлежит:

A medical system includes a probe, an electro-optical measurement unit, and a processor. The probe is configured for insertion into a blood vessel of a brain, and includes two optical fibers, which include each an optical diffuser at distal ends thereof. One fiber is configured to guide an optical signal to a location along the blood vessel and to diffuse the optical signal so as to interact with a brain clot in the blood vessel. The other fiber is configured to collect the diffused optical signal that interacted with the brain clot at another location along the blood vessel. The electro-optical measurement unit is configured to transmit the optical signal to one optical fiber, and to receive and measure the diffused optical signal from the other optical fiber. The processor is configured to identify a composition of the brain clot by analyzing the measured diffused optical signal. 1. A medical system , comprising: a first optical fiber, which comprises a first optical diffuser at a distal end thereof and which is configured to guide an optical signal to a first location along the blood vessel and to diffuse the optical signal so as to interact with a brain clot in the blood vessel; and', 'a second optical fiber, which comprises a second optical diffuser at a distal end thereof and which is configured to collect the diffused optical signal that interacted with the brain clot, at a second location along the blood vessel that is different from the first location;, 'a probe for insertion into a blood vessel of a brain, the probe comprisingan electro-optical measurement unit, configured to transmit the optical signal to the first optical fiber, and to receive and measure the diffused optical signal from the second optical fiber; anda processor, configured to identify a composition of the brain clot by analyzing the measured diffused optical signal.2. The medical system according to claim 1 , wherein the processor is further configured to output a recommendation for ...

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Номер записи: 15
10-03-2022 дата публикации

Flex Circuit and Surface Mounted Electrode Catheter

Номер: US20220071695A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas
Принадлежит:

In one embodiment, a medical system includes a catheter to be inserted into a body part, and including an elongated deflectable element including a distal end, a proximal coupler connected to the distal end, an expandable assembly comprising flexible polymer circuit strips, each flexible polymer circuit strip including strip electrodes and a respective contact pad disposed thereon, the flexible polymer circuit strips having respective proximal ends connected to, and disposed circumferentially around, the proximal coupler, and surface mountable electrodes electrically connected to respective ones of the flexible polymer circuit strips, wherein each surface mountable electrode is electrically connected to the respective contact pad of a respective one of the flexible polymer circuit strips using at least one electrically conductive retainer. 1. A medical system including a catheter configured to be inserted into a body part of a living subject , and comprising:an elongated deflectable element including a distal end;a proximal coupler connected to the distal end;an expandable assembly comprising a plurality of flexible polymer circuit strips, each flexible polymer circuit strip including multiple strip electrodes and a respective contact pad disposed thereon, the flexible polymer circuit strips having respective proximal ends connected to, and disposed circumferentially around, the proximal coupler; anda plurality of surface mountable electrodes electrically connected to respective ones of the flexible polymer circuit strips, wherein each surface mountable electrode is electrically connected to the respective contact pad of a respective one of the flexible polymer circuit strips using at least one electrically conductive retainer.2. The system according to claim 1 , wherein each surface mountable electrode extends around the respective flexible polymer circuit strip.3. The system according to claim 1 , further comprising:an ablation power generator configured to be ...

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Номер записи: 16
10-03-2022 дата публикации

Biased Electrodes for Improved Tissue Contact and Current Delivery

Номер: US20220071696A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas, Lichter Justin George
Принадлежит:

A medical probe, including a flexible insertion tube having proximal and distal ends, and a basket assembly at the distal end of the flexible insertion tube. In embodiments of the present invention, the basket assembly includes a plurality of spines and a plurality of electrodes, each of the electrodes having a lumen therethrough fitting a given spine. 1. A medical probe , comprising:a flexible insertion tube having proximal and distal ends;a basket assembly at the distal end of the flexible insertion tube, the basket assembly comprising a plurality of spines; anda plurality of electrodes, each of the electrodes having a lumen therethrough fitting a given spine.2. The medical probe according to claim 1 , wherein the spines have respective outer sides and inner sides claim 1 , and wherein each given electrode comprises a conductive material biased towards the outer side of its respective spine.3. The medical probe according to claim 1 , wherein the spines have respective outer sides and inner sides claim 1 , and wherein each given electrode has a notch between the lumen and the inner side of its respective spine.4. The medical probe according to claim 3 , wherein each given spine comprises a wire affixed to the inner side of the given spine claim 3 , and wherein the notch comprises solder material forming an electrical connection between the each given electrode and the wire.5. The medical probe according to claim 1 , and further comprising an adhesive material applied to an inner surface of each given electrode claim 1 , and wherein the inner surface is defined by the lumen of the each given electrode.6. The medical probe according to claim 1 , wherein each of the electrodes has one or more smoothed edges.7. The medical probe according to claim 1 , and further comprising a set of spray ports configured to deliver an irrigation fluid to the electrodes.8. The medical probe according to claim 1 , and further comprising a set of spray ports configured to deliver an ...

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Номер записи: 17
04-03-2021 дата публикации

Accurate Basket Catheter Tracking

Номер: US20210059608A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf
Принадлежит:

In one embodiment, a system includes a catheter including an insertion tube and a first position sensor, a pusher including a second position sensor, and an expandable assembly including flexible strips disposed circumferentially around a distal portion of the pusher, with first ends of the strips connected to the distal end of the insertion tube and second ends of the strips connected to the distal portion of the pusher, the flexible strips bowing radially outward when the pusher is retracted, processing circuitry to receive a respective position signal from the first and second position sensors, compute location and orientation coordinates for the position sensors subject to a constraint that the position sensors are coaxial and have a same orientation, compute a distance between the computed location coordinates of the position sensors, and find position coordinates of the flexible strips responsively to at least the computed distance. 1. A system comprising: an insertion tube including a distal end, and a first coil-based position sensor disposed at the distal end;', 'a pusher including a second coil-based position sensor disposed thereon and a distal portion, and being configured to be advanced and retracted through the insertion tube; and', 'an expandable assembly comprising a plurality of flexible strips disposed circumferentially around the distal portion of the pusher, with first ends of the strips connected to the distal end of the insertion tube and second ends of the strips connected to the distal portion of the pusher, the flexible strips being configured to bow radially outward when the pusher is retracted;, 'a catheter configured to be inserted into a body-part of a living subject, and comprisingat least one magnetic field radiator configured to transmit alternating magnetic fields into a region where the body-part is located, the first and second position sensors being configured to output respective first and second position signals in response to ...

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Номер записи: 18
04-03-2021 дата публикации

Systems and methods of ablating cardiac tissue

Номер: US20210059751A1
Автор: Assaf Govari, Christopher Thomas Beeckler, Eid ADAWI, Joseph Thomas Keyes, Kendra ANITA MCINNIS, Kevin Justin HERRERA, Moe Habib BISHARA, Nader GHALY, Rowan Olund Hettel, Xiangming Zhang
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.

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Номер записи: 19
20-02-2020 дата публикации

Heat Transfer During Ablation Procedures

Номер: US20200054390A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

Described embodiments include an apparatus that includes an intrabody probe and an electrode coupled to a distal end of the intrabody probe. The electrode includes a flexible electrically-insulating substrate, comprising a substrate surface. The electrode further includes a layer of an electrically-conducting metal covering at least part of the substrate surface. The electrode further includes a metallic sheet, comprising an inner sheet surface, and an outer sheet surface shaped to define multiple depressions. The electrode further includes an adhesive, which fills the depressions and bonds the outer sheet surface to the layer of the electrically-conducting metal. Other embodiments are also described. 1. Apparatus , comprising:an intrabody probe; and a flexible electrically-insulating substrate, comprising a substrate surface;', 'a layer of an electrically-conducting metal covering at least part of the substrate surface;', 'a metallic sheet, comprising an inner sheet surface, and an outer sheet surface shaped to define multiple depressions; and', 'an adhesive, which fills the depressions and bonds the outer sheet surface to the layer of the electrically-conducting metal., 'an electrode coupled to a distal end of the intrabody probe, the electrode comprising2. The apparatus according to claim 1 , wherein the substrate and the sheet are shaped to define an interior lumen that is at least partly enclosed by the inner sheet surface.3. The apparatus according to claim 2 , wherein the substrate and the sheet are shaped to define a thimble.4. The apparatus according to claim 2 , wherein the distal end of the probe comprises a flow diverter configured to divert fluid received from a proximal end of the probe claim 2 , and wherein the inner sheet surface is coupled to the flow diverter such that the flow diverter is disposed inside of the interior lumen.5. The apparatus according to claim 1 , wherein the substrate and the sheet are shaped to define a ring.6. The apparatus ...

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Номер записи: 20
20-02-2020 дата публикации

Intra-Balloon Deflection Mechanism for Enhanced Balloon Maneuverability

Номер: US20200054859A1
Автор: Beeckler Christopher Thomas, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A medical instrument includes an expandable balloon, an intra-balloon deflection assembly, and one or more puller wires. The expandable balloon is coupled to a distal end of a shaft for insertion into a body of a patient. The intra-balloon deflection assembly is also coupled to the distal end of the shaft, and includes a distal section of the shaft which extends partially through the expandable balloon and includes (i) an elastic element coupled to a proximal side of the expandable balloon and configured to be bent relative to a longitudinal axis of the shaft, and (ii) a rigid element coupled to a distal side of the expandable balloon. The one or more puller wires are coupled to the rigid element and are configured to bend the elastic element, thereby deflecting the expandable balloon. 1. A medical instrument , comprising:an expandable balloon, coupled to a distal end of a shaft for insertion into a body of a patient; and a distal section of the shaft, which extends at least partially through the expandable balloon and comprises (i) an elastic element coupled to a proximal side of the expandable balloon and configured to be bent relative to a longitudinal axis of the shaft, and (ii) a rigid element coupled to a distal side of the expandable balloon; and', 'one or more puller wires, which are coupled to the rigid element and configured to bend the elastic element, thereby deflecting the expandable balloon., 'an intra-balloon deflection assembly coupled to the distal end of the shaft, the intra-balloon deflection assembly comprising2. The medical instrument according to claim 1 , wherein the elastic element comprises a spring.3. The medical instrument according to claim 1 , wherein the rigid element comprises a stiffening tube claim 1 , which is configured to prevent the elastic element from bending over at least part of a length of the elastic element.4. The medical instrument according to claim 3 , wherein a length of the stiffening tube is configured to determine a ...

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Номер записи: 21
28-02-2019 дата публикации

BALLOON ADVANCEMENT MECHANISM

Номер: US20190059818A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin
Принадлежит:

A medical instrument includes a shaft, an expandable balloon and a collapsing set of splines. The shaft is configured for insertion into a body of a patient. The expandable balloon is coupled to a distal end of the shaft. 1. A medical instrument , comprising:a shaft for insertion into a patient body;an expandable balloon coupled to a distal end of the shaft; anda collapsing set of splines made at least partially from a shape-memory material having a collapsed pre-formed shape that collapses the balloon.2. The medical instrument according to claim 1 , and comprising an expanding set of splines made at least partially from a shape-memory material having an expanded pre-formed shape that expands the balloon.3. The medical instrument according to claim 2 , wherein the expanding set of splines is configured to receive an expanding electrical current via wiring running through the shaft and to expand the balloon in response to the expanding electrical current claim 2 , and wherein the collapsing set of splines is configured to receive a collapsing electrical current via the wiring and to collapse the balloon in response to the collapsing electrical current.4. The medical instrument according to claim 2 , wherein a given spline claim 2 , in the expanding set or in the collapsing set claim 2 , is configured to be heated by conducting electrical current provided thereto claim 2 , so as to revert to the expanded pre-formed shape or the collapsed pre-formed shape claim 2 , respectively.5. The medical instrument according to claim 2 , and comprising a heater claim 2 , which is attached to a given spline in the expanding set or in the collapsing set claim 2 , and which is configured to be heated by conducting electrical current provided thereto claim 2 , so as to set the given spline to the expanded pre-formed shape or the collapsed pre-formed shape claim 2 , respectively.6. The medical instrument according to claim 2 , wherein the expanding set of splines and the collapsing set ...

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Номер записи: 22
28-02-2019 дата публикации

VIBRATING CATHETER FOR RADIO-FREQUENCY (RF) ABLATION

Номер: US20190059993A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

A medical instrument includes a shaft, multiple electrodes and a vibration generator. The shaft is configured for insertion into a body of a patient. The multiple electrodes are fitted at a distal end of the shaft and are configured to deliver Radio Frequency (RF) energy for ablation at multiple respective locations in tissue. The vibration generator is configured to vibrate the multiple electrodes for providing cooling to the tissue in a vicinity of the locations. 1. A medical instrument , comprising:a shaft for insertion into a body of a patient;multiple electrodes, which are fitted at a distal end of the shaft and are configured to deliver Radio Frequency (RF) energy for ablation at multiple respective locations in tissue; anda vibration generator configured to vibrate the multiple electrodes for providing cooling to the tissue in a vicinity of the locations.2. The medical instrument according to claim 1 , and comprising:one or more temperature sensors fitted at the distal end of the shaft and configured to measure one or more respective temperatures; anda processor configured to read the measured temperatures from the temperature sensors and to command the vibration generator to vibrate the multiple electrodes responsively to one or more of the read temperatures.3. The medical instrument according to claim 2 , wherein the processor is configured to adjust at least one of an amplitude and a frequency with which the vibration generator vibrates the multiple electrodes claim 2 , responsively to one or more of the read temperatures.4. The medical instrument according to claim 3 , wherein the processor is configured to activate or deactivate the vibration generator responsively to one or more of the read temperatures.5. The medical instrument according to claim 1 , wherein the multiple electrodes are configured to deliver the RF energy in a sequence of pulses claim 1 , and comprising a processor configured to command the vibration generator to vibrate the multiple ...

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Номер записи: 23
17-03-2022 дата публикации

MAPPING ECG SIGNALS USING A MULTIPOLE ELECTRODE ASSEMBLY

Номер: US20220079496A1
Автор: Beeckler Christopher Thomas, Squires Alexander David
Принадлежит: Biosense Webster (Israel) Ltd.

A medical probe includes an insertion tube for insertion into a patient body, at least an arm, which is attached to a distal end of the insertion tube, at least a reference electrode coupled to the arm, and multiple electrodes, which are coupled to the arm, surround the reference electrode and are configured to sense electrical signals of body tissues that, when measured relatively to the reference electrode, are indicative of anatomical signals in the patient body. 1. A medical probe , comprising:an insertion tube for insertion into a patient body;an arm attached to a distal end of the insertion tube;a reference electrode on a surface of the arm and configured to contact internal tissues; andmultiple electrodes arranged in a non-uniform geometry surrounding the reference electrode such that the multiple electrodes are configured to sense anatomical signals and provide electrical signals which, when measured relative to the reference electrode, are indicative of the anatomical signals in the patient body.2. The medical probe of claim 1 , wherein the multiple electrodes are each arranged on the surface of the arm.3. The medical probe of claim 1 , wherein the electrical signals are indicative of a direction of the anatomical signals.4. The medical probe of claim 1 , wherein the electrical signals are indicative of a propagation speed of the anatomical signals.5. The medical probe of claim 1 , wherein the electrical signals are indicative of a magnitude of the anatomical signals.6. The medical probe of claim 1 , further comprising at least two body surface electrodes coupled to a skin of the patient body and configured to produce additional electrical signals.7. The medical probe of claim 6 , further comprising a virtual common electrode having a reference signal calculated from the additional electrical signals of the at least two body surface electrodes.8. The medical probe of claim 1 , further comprising one or more wireless communication devices claim 1 , which are ...

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Номер записи: 24
17-03-2022 дата публикации

Attaining Higher Impedances for Large Indifferent Electrodes

Номер: US20220079670A1
Автор: Beeckler Christopher Thomas, Papaioannou Athanassios
Принадлежит:

Described embodiments include an apparatus that includes an electrically-conductive layer, including a first face and a second face that are opposite one another, a first electrically-insulative layer that is shaped to define a plurality of apertures and that covers the first face without covering portions of the first face that are aligned with the apertures, and a second electrically-insulative layer that covers the second face. Other embodiments are also described. 111-. (canceled)12. The apparatus according to claim 14 , wherein the electrically-insulative substrate comprises a first surface and a second surface that are opposite one another claim 14 , wherein the electrically-conductive coating coats the first surface of the electrically-insulative substrate claim 14 , and wherein the apparatus further comprises:a plurality of electrically-conducting islands that coat respective portions of the second surface of the electrically-insulative substrate that surround the apertures; andrespective metallic deposits that fill the apertures and electrically connect the electrically-conductive coating to the islands.13. The apparatus according to claim 12 , wherein the metallic deposits further cover the islands.14. Apparatus comprising:an electrically-conductive layer, comprising a first face and a second face that are opposite one another;a first electrically-insulative laver that is shaped to define a plurality of apertures and that covers the first face without covering portions of the first face that are aligned with the apertures; andrespective electrically-conductive metallic deposits that contact the electrically-conductive layer and at least partly fill the apertures; anda second electrically-insulative layer that covers the second face.15. The apparatus according to claim 14 , wherein the metallic deposits comprise gold.16. The apparatus according to claim 14 , wherein the metallic deposits further cover respective portions of the first electrically-insulative ...

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Номер записи: 25
28-02-2019 дата публикации

CATHETER BALLOON WITH INTEGRATED WIRING

Номер: US20190060622A1
Автор: Beeckler Christopher Thomas
Принадлежит:

A medical instrument includes a shaft, an inflatable balloon and one or more electrical wires. The shaft is configured for insertion into a body of a patient. The inflatable balloon is coupled to a distal end of the shaft and includes a wall containing an internal cavity. The one or more electrodes are disposed on an external surface of the balloon. The one or more electrical wires connect to the one or more electrodes and run within the wall of the balloon parallel to the external surface. 1. A medical instrument , comprising:a shaft for insertion into a body of a patient;an inflatable balloon coupled to a distal end of the shaft and comprising a wall containing an internal cavity;one or more electrodes disposed on an external surface of the balloon; andone or more electrical wires, which connect to the one or more electrodes and run within the wall of the balloon parallel to the external surface.2. The medical instrument according to claim 1 , wherein the wires run through one or more lumens that are formed in the wall and run parallel to the external surface.3. The medical instrument according to claim 2 , wherein the lumens are formed by extrusion of the balloon wall.4. The medical instrument according to claim 2 , and comprising one or more temperature sensors claim 2 , which are located in one or more of the lumens and are electrically connected to one or more integrated wires running through the one or more of the lumens.5. The medical instrument according to claim 1 , wherein the wires are embedded in the wall material.6. The medical instrument according to claim 1 , where the electrical wires are uninsulated.7. The medical instrument according to claim 1 , wherein the electrical wires are electrically connected to electrical wiring running through the shaft.8. The medical instrument according to claim 1 , wherein the one or more electrical wires connect to the one or more electrodes through holes that are formed in the wall through the external surface.9. ...

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Номер записи: 26
24-03-2022 дата публикации

BASKET CATHETER HAVING INSULATED ABLATION ELECTRODES

Номер: US20220087734A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A catheter includes a shaft for insertion into an organ of a patient, and an expandable distal-end assembly, which is coupled to the shaft and to an apex of the catheter, and includes multiple splines. In at least a given spline among the multiple splines, at least sixty percent of a length of the given spline is non-insulated and is configured to make contact with tissue of the organ and to apply radiofrequency (RF) pulses to the tissue. 1. A catheter , comprising:a shaft for insertion into an organ of a patient, the shaft extending along a longitudinal axis; andan expandable distal-end assembly, which is coupled to the shaft and to an apex of the catheter, and comprises multiple splines, wherein, in at least a given spline among the multiple splines, at least 60 percent of a length of the given spline is non-insulated and is configured to make contact with tissue of the organ and to apply radiofrequency (RF) pulses to the tissue; anda bump stop, which is coupled to the apex and is configured to limit a minimal distance along the longitudinal axis between the shaft and the apex, the bump stop being separated from a tip of the shaft with an axial gap between the tip and the bump stop.2. The catheter according to claim 1 , wherein at most 40 percent of the length of the given spline is insulated and is positioned between the non-insulated length and the apex.3. The catheter according to claim 2 , wherein the insulated length is coated with an electrically-insulated layer.4. The catheter according to claim 1 , wherein at least the given spline comprises nickel-titanium alloy.5. The catheter according to claim 1 , wherein the apex has a flat surface claim 1 , which is orthogonal to an axis of the shaft.6. The catheter according to claim 5 , wherein the flat surface is insulated.7. The catheter according to claim 1 , wherein the axial gap comprises a gap distance selected from any value from about 1 mm to about 13 mm.8. A method for producing a catheter claim 1 , the ...

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Номер записи: 27
24-03-2022 дата публикации

BASKET CATHETER HAVING INSULATED ABLATION ELECTRODES AND DIAGNOSTIC ELECTRODES

Номер: US20220087735A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A catheter includes a shaft for insertion into an organ of a patient, an expandable distal-end assembly, and one or more electrodes. The expandable distal-end assembly is coupled to the shaft and to an apex of the catheter, and includes multiple splines. In at least a given spline among the multiple splines, at least sixty percent of a length of the given spline is non-insulated and is configured to make contact with tissue of the organ and to apply radiofrequency (RF) pulses to the tissue. The one or more electrodes are coupled to at least one of (i) an insulated section of one or more of the splines, and (II) the apex, and, when placed in contact with the tissue, the one or more electrodes are configured to sense electrical signals in the tissue. 1. A catheter , comprising:a shaft for insertion into an organ of a patient;an expandable distal-end assembly, which is coupled to the shaft and to an apex of the catheter, and comprises multiple splines, wherein, in at least a given spline among the multiple splines, at least 60 percent of a length of the given spline is non-insulated and is configured to make contact with tissue of the organ and to apply radiofrequency (RE) pulses to the tissue;one or more electrodes, which are coupled to at least one of (i) an insulated section of one or more of the splines, and (ii) the apex, and, when placed in contact with the tissue, the one or more electrodes are configured to sense electrical signals in the tissue; anda bump stop, which is coupled to the apex and is configured to maintain a minimal distance along the longitudinal axis between the shaft and the apex, the bump stop being separated from a tip of the shaft with an axial gap between the tip and the bump stop.2. The catheter according to claim 1 , wherein the insulated section has at most 40 percent of the length of the given spline claim 1 , and is positioned between the non-insulated length and the apex.3. The catheter according to claim 1 , wherein the insulated ...

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Номер записи: 28
24-03-2022 дата публикации

ELECTRODE SHORTING

Номер: US20220087736A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

In one embodiment, a medical system includes a catheter configured to be inserted into a body part of a living subject, and including a deflectable element having a distal end, an expandable distal end assembly disposed at the distal end of the deflectable element, and comprising a plurality of assembly electrodes, and configured to expand from a collapsed form to an expanded deployed form, a proximal electrode disposed at the distal end of the deflectable element proximally to the expandable distal end assembly, and extending circumferentially around the deflectable element, at least one electrical connection configured to electrically connect together at least two of the assembly electrodes to act as a combined assembly electrode, and an ablation power generator configured to be connected to the catheter, and apply an electrical signal between the combined assembly electrode and a selected electrode. 1. A medical system comprising a catheter configured to be inserted into a body part of a living subject , and including:a deflectable element having a distal end;an expandable distal end assembly disposed at the distal end of the deflectable element, and comprising a plurality of assembly electrodes, and configured to expand from a collapsed form to an expanded deployed form;a proximal electrode disposed at the distal end of the deflectable element proximally to the expandable distal end assembly, and extending circumferentially around the deflectable element;at least one electrical connection configured to electrically connect together at least two of the assembly electrodes to act as a combined assembly electrode; andan ablation power generator configured to be connected to the catheter, and apply an electrical signal between the combined assembly electrode and a selected electrode.2. The system according to claim 1 , wherein the selected electrode is the proximal electrode.3. The system according to claim 1 , wherein the at least one electrical connection ...

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Номер записи: 29
18-03-2021 дата публикации

Balloon Catheter with Force Sensor

Номер: US20210077180A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

In one embodiment, a system includes a balloon catheter configured to be inserted into a body-part of a living subject, the balloon catheter comprising an insertion tube having a distal tip, a force sensor connected to the distal tip, and an inflatable balloon including a proximal portion connected to the force sensor so that the force sensor is disposed between the distal tip of the insertion tube and the inflatable balloon, and multiple electrodes disposed around an outer surface of the balloon, and configured, when the balloon is inflated, to contact tissue at respective locations in the body-part, wherein the force sensor is configured to output at least one force signal indicative of a magnitude and a direction of a force applied by the balloon on the tissue when the balloon is inflated. 1. A system comprising a balloon catheter configured to be inserted into a body-part of a living subject , the balloon catheter comprising:an insertion tube having a distal tip;a force sensor connected to the distal tip; andan inflatable balloon including: a proximal portion connected to the force sensor so that the force sensor is disposed between the distal tip of the insertion tube and the inflatable balloon; and multiple electrodes disposed around an outer surface of the balloon, and configured, when the balloon is inflated, to contact tissue at respective locations in the body-part; wherein the force sensor is configured to output at least one force signal indicative of a magnitude and a direction of a force applied by the balloon on the tissue when the balloon is inflated.2. The system according to claim 1 , further comprising:a display; and compute the magnitude and direction of the force responsively to the at least one force signal; and', 'render to the display a representation of a force vector and a representation of the inflatable balloon, responsively to the at least one force signal., 'processing circuitry configured to3. The system according to claim 2 , wherein: ...

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Номер записи: 30
18-03-2021 дата публикации

Very narrow probe with coil

Номер: US20210077197A1
Автор: Assaf Govari, Athanassios Papaioannou, Christopher Thomas Beeckler, Joseph Thomas Keyes, Vadim Gliner
Принадлежит: Biosense Webster Israel Ltd

In one embodiment, a probe apparatus includes a shaft having a distal end, a tube containing separate powder granules of a ferrite, the tube being fixed to the distal end of the shaft, a coil disposed around the tube, and electrical wires connected to the coil so as to read out a signal generated across the coil due to an externally-applied magnetic field.

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Номер записи: 31
24-03-2016 дата публикации

MULTI-RANGE OPTICAL SENSING

Номер: US20160081555A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

The depth of an ablation lesion is assessed using a differential optical response of a catheter with multiple fiberoptic transmitters and receivers at the tip. To detect tissue optical response at shallow depths, closely-spaced transmitter/receiver pairs of optical fibers are used. To detect deeper tissue response, the same or a different transmitter can be used with another receiver that is relatively farther away. The distance between the transmitter and receiver is chosen depending on the desired depth of sensing. Plateauing or peaking of the optical signal during the course of ablation indicates an end point at a selected tissue depth. 1. An apparatus , comprising:an insertion tube having a distal portion configured for insertion into proximity with tissue in a body of a patient and containing a lumen comprising:an electrical conductor for delivering energy to the tissue;a conductive cap attached to the distal portion of the insertion tube and coupled electrically to the electrical conductor;a plurality of optical fibers contained within the insertion tube and having terminations at the distal portion, the optical fibers being configurable as optical transmitting fibers to convey optical radiation to the tissue and being configurable as optical receiving fibers to convey reflected optical radiation from the tissue, wherein at the distal portion of the insertion tube, the terminations of the optical fibers are spaced apart at respective distances from one another;an optical module configured to interrogate the tissue at a predetermined depth by selectively associating the optical transmitting fibers with the optical receiving fibers according to the respective distances therebetween, the optical module operative to emit light along a light path that passes through a selected optical transmitting fiber, reflects from the tissue, and returns to the optical module as reflected light via a selected optical receiving fiber while the electrical conductor is delivering ...

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Номер записи: 32
31-03-2022 дата публикации

MULTI-CHANNEL PIEZOELECTRIC RESONANT SYSTEM

Номер: US20220096269A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf, Keyes Joseph Thomas
Принадлежит:

A phacoemulsification system includes a phacoemulsification probe and one or more signal generators. The phacoemulsification probe includes (i) a piezoelectric actuator, (ii) a segmented electrode, including multiple electrode segments attached to respective angular sections of a face of the piezoelectric actuator, (iii) a common ground electrode attached to the piezoelectric actuator, and (iv) a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric actuator. The one or more signal generators are configured to vibrate the piezoelectric actuator by applying multiple drive signals between the multiple respective electrode segments and the common ground electrode. 1. A phacoemulsification system , comprising:{'claim-text': ['a piezoelectric actuator;', 'a segmented electrode, comprising multiple electrode segments attached to respective angular sections of a face of the piezoelectric actuator;', 'a common ground electrode attached to the piezoelectric actuator; and', 'a needle configured to be inserted into a lens capsule of an eye and to be vibrated by the piezoelectric actuator; and'], '#text': 'a phacoemulsification probe, comprising:'}one or more signal generators, configured to vibrate the piezoelectric actuator by applying multiple drive signals between the multiple respective electrode segments and the common ground electrode.2. The system according to claim 1 , wherein the one or more signal generators are configured to apply a same drive signal to at least two of the electrode segments.3. The system according to claim 1 , wherein the one or more signal generators are configured to apply different drive signals to at least two of the electrode segments.4. The system according to claim 1 , wherein the segmented electrode is annular claim 1 , and wherein each of the electrode segments has an annular sector shape.5. The system according to claim 1 , wherein the piezoelectric actuator comprises a stack of multiple ...

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Номер записи: 33
12-03-2020 дата публикации

BASKET CATHETER WITH MICROELECTRODE ARRAY DISTAL TIP

Номер: US20200077959A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, HETTEL Rowan Olund
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 ...

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Номер записи: 34
29-03-2018 дата публикации

DETECTION OF LEAKAGE IN IMPLANTS

Номер: US20180085210A1
Автор: Algawi Yehuda, Beeckler Christopher Thomas, Ephrath Yaron, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

An implant includes a hollow biocompatible shell, first and second electrodes, filling material, and circuitry. The hollow biocompatible shell is configured to be implanted in an organ of a patient. The first electrode is disposed inside the shell. The second electrode has at least one surface disposed outside the shell. The filling material, which includes carbon nanotubes (CNT), fills the shell and is configured, in response to a rupture occurring in the shell, to change a spatial orientation of the CNT and thus to cause a change in electrical conductivity of the filling material between the first electrode and the rupture. The circuitry is electrically connected to the first and second electrodes and is configured to detect the rupture by sensing the change in the electrical conductivity of the CNT, and to produce an output indicative of the detected rupture. 1. An implant , comprising:a hollow biocompatible shell, which is configured to be implanted in an organ of a patient;a first electrode disposed inside the shell;a second electrode having at least one surface disposed outside the shell;filling material comprising carbon nanotubes (CNT), which fills the shell and is configured, in response to a rupture occurring in the shell, to change a spatial orientation of the CNT and thus cause a change in electrical conductivity of the filling material between the first electrode and the rupture; andcircuitry, which is electrically connected to the first and second electrodes and is configured to detect the rupture by sensing the change in the electrical conductivity of the CNT, and to produce an output indicative of the detected rupture.2. The implant according to claim 1 , wherein the filling material comprises silicone gel in which the CNT are doped.3. The implant according to claim 1 , wherein the second electrode is electrically insulated from the filling material and electrically connected to a tissue of the organ surrounding the shell.4. The implant according to ...

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Номер записи: 35
19-03-2020 дата публикации

SYSTEMS AND METHODS OF ABLATING CARDIAC TISSUE

Номер: US20200085497A1
Автор: Adawi Eid, Beeckler Christopher Thomas, BISHARA Moe Habib, GHALY Nader, Govari Assaf, Herrera Kevin Justin, HETTEL Rowan Olund, Keyes Joseph Thomas, MCINNIS Kendra Anita, Zhang Xiangming
Принадлежит: Biosense Webster (Israel) Ltd.

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. 1. An ablation system for electrical signal isolation in portions of organ tissues , the system comprising:a power generator;a catheter shaft extending along a longitudinal axis;a plurality of electrodes disposed about the longitudinal axis to define at least a circumferential surface about the longitudinal axis, each electrode independently connected to the power generator to provide electrical energy to each independent electrode; and (c) receive measurement signals representative of tissue temperature and tissue impedance proximate each electrode in contact with organ tissues and', '(d) provide an indication for a probability of success in isolating electrical signal propagation in a region of the organ tissues in contact with the plurality of electrodes, the probability of success being determined from the tissue temperature values and tissue impedance values., 'a processor to control power delivery of the power generator to each of the independently controlled electrodes, the processor configured to2. The system of claim 1 , wherein the temperature values are selected from one or more of: (a) initial temperature variation ΔT; (b) highest initial temperature ...

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Номер записи: 36
05-05-2022 дата публикации

Balloon Catheter with Split Electrodes

Номер: US20220133402A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A medical apparatus includes a probe, which includes an insertion tube configured for insertion into a body cavity. A balloon is connected distally to the insertion tube and is inflated within the body with a fluid that flows into the balloon through the insertion tube. Electrodes are disposed at different respective locations on a surface of the balloon and configured to contact tissue within the body cavity, each electrode being divided into multiple segments, including at least two segments having different respective areas. An electrical signal generator applies radio-frequency (RF) signals simultaneously in parallel to the multiple segments of each electrode with an amplitude sufficient to ablate the tissue contacted by the electrode. Sensing circuitry acquires electrophysiological signals from at least one of the multiple segments of each electrode separately and independently of the other segments of the electrode.

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Номер записи: 37
19-06-2014 дата публикации

OPTICAL LESION ASSESSMENT

Номер: US20140171806A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf, Papaioannou Athanassios
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

Medical apparatus includes a probe, having a distal segment configured for insertion into a body of a patient. The probe includes at least one optical sensing unit, which is disposed along the distal segment and includes first and second radiation sources, configured to emit optical radiation in different, respective, first and second wavelength bands toward tissue in the body in proximity to the distal segment. An optical sensor is configured to receive the optical radiation in the first and second wavelength bands that is scattered from the tissue and to output first and second electrical signals responsively to an intensity of the received optical radiation. 1. Medical apparatus , comprising a probe , having a distal segment configured for insertion into a body of a patient , the probe comprising at least one optical sensing unit , which is disposed along the distal segment and comprises:first and second radiation sources, configured to emit optical radiation in different, respective, first and second wavelength bands toward tissue in the body in proximity to the distal segment; andan optical sensor, which is configured to receive the optical radiation in the first and second wavelength bands that is scattered from the tissue and to output first and second electrical signals responsively to an intensity of the received optical radiation.2. The apparatus according to claim 1 , wherein the first wavelength band is an infrared band claim 1 , and the second wavelength band is a visible light band.3. The apparatus according to claim 2 , wherein the first wavelength band has a peak intensity between 860 and 880 nm claim 2 , and the second wavelength band has a peak intensity between 710 and 730 nm.4. The apparatus according to claim 2 , and comprising a control unit claim 2 , which is coupled to make a comparison of the first and second signals claim 2 , and to output an indication of a condition of the tissue responsively to the comparison.5. The apparatus according ...

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Номер записи: 38
19-06-2014 дата публикации

IRRIGATED CATHETER TIP WITH TEMPERATURE SENSOR ARRAY

Номер: US20140171821A1
Автор: Beeckler Christopher Thomas, Govari Assaf, HETTEL Rowan Olund, Papaioannou Athanassios
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A medical probe includes an insertion tube having a distal end configured for insertion into a body of a patient and containing a lumen for conveying an irrigation fluid and an electrical conductor for conveying electrical energy. A conductive cap is attached to the distal end of the insertion tube and coupled electrically to the electrical conductor. The conductive cap has an outer surface perforated by multiple apertures and defines an inner cavity in fluid communication with the lumen of the insertion tube so as to permit the irrigation fluid from the lumen to flow out of the cap through the apertures. A plurality of temperature sensors are mounted within the conductive cap in thermal communication with the outer surface and are thermally insulated from the irrigation fluid in the inner cavity. 1. A medical probe , comprising:an insertion tube having a distal end configured for insertion into a body of a patient and containing a lumen for conveying an irrigation fluid and an electrical conductor for conveying electrical energy;a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, wherein the conductive cap has an outer surface perforated by multiple apertures and defines an inner cavity in fluid communication with the lumen of the insertion tube so as to permit the irrigation fluid from the lumen to flow out of the cap through the apertures; anda plurality of temperature sensors, which are mounted within the conductive cap in thermal communication with the outer surface and are thermally insulated from the irrigation fluid in the inner cavity.2. The probe according to claim 1 , wherein the cap comprises multiple ribs internal to the outer surface claim 1 , and wherein the temperature sensors are mounted inside the ribs.3. The probe according to claim 1 , and comprising an inner wall inside and parallel to the cap claim 1 , wherein the inner cavity is contained between the inner wall and the cap ...

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Номер записи: 39
19-06-2014 дата публикации

IRRIGATED CATHETER TIP WITH TEMPERATURE SENSOR AND OPTIC FIBER ARRAYS

Номер: US20140171936A1
Автор: Beeckler Christopher Thomas, Govari Assaf, HETTEL Rowan Olund, Papaioannou Athanassios
Принадлежит: Biosense Webster (Israel) Ltd.

Apparatus, consisting of an insertion tube having a distal end configured for insertion into proximity with tissue in a body of a patient and containing a lumen having an electrical conductor for conveying electrical energy to the tissue. The apparatus further includes a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, wherein the conductive cap has an outer surface. In addition there are a multiplicity of optical fibers contained within the insertion tube, each fiber terminating in proximity to the outer surface of the cap, and being configured to convey optical radiation to and from the tissue while the electrical energy is being conveyed to the tissue. 1. Apparatus , comprising:an insertion tube having a distal end configured for insertion into proximity with tissue in a body of a patient and containing a lumen comprising an electrical conductor for conveying electrical energy to the tissue;a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, wherein the conductive cap has an outer surface; anda multiplicity of optical fibers contained within the insertion tube, each fiber terminating in proximity to the outer surface of the cap, and being configured to convey optical radiation to and from the tissue while the electrical energy is being conveyed to the tissue.2. The apparatus according to claim 1 , and comprising a plurality of temperature sensors claim 1 , which are mounted within the conductive cap in thermal communication with the outer surface.3. The apparatus according to claim 1 , wherein the outer surface is penetrated by multiple apertures claim 1 , and wherein the conductive cap defines an inner cavity in fluid communication with the lumen of the insertion tube so as to permit irrigation fluid from the lumen to flow out of the cap through the apertures.4. The apparatus according to claim 1 , wherein the cap comprises a ...

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Номер записи: 40
01-04-2021 дата публикации

Wiring for Multi-Electrode Catheter

Номер: US20210093374A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Squires Alexander David
Принадлежит:

In one embodiment, a catheter includes a shaft assembly having a proximal and distal end, which comprises a deflectable segment including lumens running longitudinally therein, electrodes disposed at the distal end, a connector disposed at the proximal end for coupling to processing circuitry, cables disposed in first respective ones of the lumens, each cable electrically coupled to the connector and a respective group of the electrodes, wherein each cable includes a bundle of wires, each wire connected to a respective one of the electrodes in the respective group, an electrical shielding surrounding the bundle, and an electrically insulating jacket surrounding the shielding and sized to allow longitudinal movement of the respective cable within the respective lumen, respective elongated members disposed in second respective ones of the lumens, and connected to the distal end, and a manipulator connected to the elongated members to actuate the distal end via the elongated members. 1. A catheter configured to be inserted into a body part of a living subject , and comprising:a shaft assembly having a proximal end and a distal end, which comprises a deflectable segment including lumens running longitudinally in the deflectable segment;multiple electrodes disposed at the distal end of the shaft assembly;a connector disposed at the proximal end of the shaft assembly for coupling to processing circuitry; a bundle of individually insulated wires, each wire connected to a respective one of the electrodes in the respective group;', 'an electrical shielding surrounding the bundle; and', 'an electrically insulating jacket surrounding the electrical shielding and sized to allow longitudinal movement of the respective cable within the respective lumen;, 'a plurality of cables disposed in first respective ones of the lumens, each cable electrically coupled to the connector and a respective group of the electrodes, wherein each cable comprisesrespective elongated members disposed ...

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Номер записи: 41
01-04-2021 дата публикации

FLEXIBLE MULTI-ARM CATHETER WITH DIAMETRICALLY OPPOSED SENSING ELECTRODES

Номер: US20210093377A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

A medical instrument includes a shaft, multiple flexible spines and multiple electrodes. The shaft is configured for insertion into a body of a patient. The multiple flexible spines have respective first ends that are connected to a distal end of the shaft and respective second ends that are free-standing and unanchored. The spines are bent proximally such that the second ends are more proximal than the first ends. Each of the flexible spines includes a tensile layer configured to cause the flexible spine to bend proximally. The multiple electrodes are disposed over the flexible spines. 1. A medical instrument , comprising:a shaft for insertion into a body of a patient;multiple flexible spines, having respective first ends that are connected to a distal end of the shaft and respective second ends that are free-standing and unanchored,wherein the spines are bent proximally such that the second ends are more proximal than the first ends, and wherein each of the flexible spines comprises a tensile layer configured to cause the flexible spine to bend proximally; andmultiple electrodes disposed over the flexible spines;wherein the circuit board substrates are folded so that the multiple electrodes are disposed over diametrically opposing facets of the circuit board substrates; andwherein the circuit board substrates are folded so that the multiple electrodes are disposed over diametrically opposing facets of the circuit board substrates.2. (canceled)3. (canceled)4. The medical instrument according to claim 1 , wherein the circuit board substrates are folded so that the multiple electrodes are disposed over diametrically opposing facets of the circuit board substrates.5. The medical instrument according to claim 1 , wherein each of the tensile layers comprises one or more tensile fibers configured to cause the flexible spine to bend proximally.6. The medical instrument according to claim 1 , wherein a tensile strength of the tensile layer is greater than that of a Nitinol ...

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Номер записи: 42
01-04-2021 дата публикации

Bendable guidewire

Номер: US20210093832A1
Автор: Christopher Thomas Beeckler, Joseph Thomas Keyes
Принадлежит: Biosense Webster Israel Ltd

An apparatus includes a tube configured for insertion into a body of a subject, the tube comprising a plurality of strips, which are angled obliquely with respect to a longitudinal axis of the tube, by virtue of the tube being shaped to define a plurality of slits having respective oblique proximal ends and respective oblique distal ends. The distal end of each of the slits is nested between the proximal end of a first other one of the slits and the proximal end of a second other one of the slits such that (i) one of the strips is disposed between the distal end of the slit and the proximal end of the first other one of the slits, and (ii) another one of the strips is disposed between the distal end of the slit and the proximal end of the second other one of the slits.

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Номер записи: 43
09-04-2015 дата публикации

CATHETER WITH CROSS-BRAIDED PROXIMAL SECTION AND HELICAL-COILED DISTAL END

Номер: US20150100043A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

A medical probe includes a proximal section, a transition region, and a distal section. The proximal section includes a braid that is braided with a cross-braiding configuration. In the transition region, which follows the proximal section, the braid transitions between the cross-braiding configuration and a helical coiling configuration. In the distal section, which follows the transition region, the braid is coiled with the helical coiling configuration. 1. A medical probe , comprising:a proximal section comprising a braid that is braided with a cross-braiding configuration;a transition region, which follows the proximal section and in which the braid transitions between the cross-braiding configuration and a helical coiling configuration; anda distal section, which follows the transition region and in which the braid is coiled with the helical coiling configuration.2. The medical probe according to claim 1 , wherein the braid in the proximal section comprises multiple wires braided with the cross-braiding configuration claim 1 , wherein the braid in the distal section comprises the multiple wires coiled with the helical coiling configuration claim 1 , and wherein claim 1 , in the transition region claim 1 , a winding direction of a subset of the multiple wires is reversed so as to transition between the cross-braiding configuration and the helical coiling configuration.3. The medical probe according to claim 1 , and comprising an outer coating covering the braid.4. The medical probe according to claim 1 , wherein the proximal section has a first flexibility in directions perpendicular to an axis of the probe claim 1 , and wherein the distal section has a second flexibility greater than the first flexibility.5. The medical probe according to claim 1 , wherein the probe comprises a cardiac catheter.6. The medical probe according to claim 1 , wherein the probe comprises a cardiac sheath.7. The medical probe according to claim 1 , wherein the probe comprises a ...

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Номер записи: 44
19-04-2018 дата публикации

Catheter with angled irrigation holes

Номер: US20180104000A1
Автор: Christopher Thomas Beeckler, Joseph Thomas Keyes
Принадлежит: Biosense Webster Israel Ltd

A medical probe for insertion has at least one distal electrode coupled to an energy source to apply energy to tissue inside the body. A plurality of apertures are formed in the electrode. A fluid-directing assembly is disposed in the distal section of the probe having an axial channel that is in fluid communication with at least one trans-axial channel disposed at right angles to the axial channel and leading to an exterior of the assembly. A blocking terminus is disposed forward of the at least one trans-axial channel that prevents irrigation fluid from flowing axially in a forward direction so that the fluid flows outwardly into the lumen of the electrode in at least one trans-axial direction.

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Номер записи: 45
23-04-2015 дата публикации

MAPPING FORCE AND TEMPERATURE FOR A CATHETER

Номер: US20150112149A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

A method for displaying information, including receiving measurements, with respect to an invasive probe inside a body of a subject, of probe parameters consisting of a force exerted by the probe on tissue of the subject and temperatures measured by sensors of the probe. The method further includes, responsively to the measurements, displaying in a single map on a display screen a graphical representation of a distribution of the temperatures in a vicinity of the probe and superimposing thereon a vector representation of the force. 1. A method for displaying information , comprising:receiving measurements, with respect to an invasive probe inside a body of a subject, of probe parameters comprising a force exerted by the probe on tissue of the subject and temperatures measured by sensors of the probe; andresponsively to the measurements, displaying in a single map on a display screen a graphical representation of a distribution of the temperatures in a vicinity of the probe and superimposing thereon a vector representation of the force.2. The method according to claim 1 , wherein the vector representation comprises a first indication of a magnitude of the force and a second indication of a force-direction of the force.3. The method according to claim 2 , wherein the vector representation comprises an arrow claim 2 , and wherein the first indication comprises a width of the arrow claim 2 , and wherein the second indication comprises a combination of a length of the arrow and a direction of the arrow.4. The method according to claim 2 , wherein the vector representation comprises an arrow and a text box associated therewith claim 2 , and wherein the first indication comprises text within the text box claim 2 , and wherein the second indication comprises a combination of a length of the arrow and a direction of the arrow.5. The method according to claim 2 , wherein the vector representation comprises a first circle having a first center claim 2 , and wherein the ...

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Номер записи: 46
03-07-2014 дата публикации

CATHETER CONNECTOR

Номер: US20140188086A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A catheter handle, including a housing, configured to be gripped by an operator of a catheter coupled to the housing during a medical procedure using the catheter, the housing being formed of a first polymer and having an aperture formed therein. The handle includes an insert, formed of a second polymer, and configured to be introduced into the aperture so as to mate therewith. The handle further includes a plurality of contacts, configured to be implanted into the insert in a preset spatial relationship. 1. A catheter handle , comprising:a housing, configured to be gripped by an operator of a catheter coupled to the housing during a medical procedure using the catheter, the housing being formed of a first polymer and having an aperture formed therein;an insert, formed of a second polymer, configured to be introduced into the aperture so as to mate therewith; anda plurality of contacts, configured to be implanted into the insert in a preset spatial relationship.2. The handle according to claim 1 , wherein the first polymer has a housing hardness claim 1 , and wherein the second polymer has an insert hardness that is harder than the housing hardness.3. The handle according to claim 2 , wherein the housing hardness is within a range of 70-80 on a Rockwell M scale of hardness.4. The handle according to claim 2 , wherein the insert hardness is greater than or equal to 95 on a Rockwell M scale of hardness.5. The handle according to claim 1 , wherein the first polymer comprises a polycarbonate claim 1 , and wherein the second polymer comprises a glass-filled epoxy resin.6. The handle according to claim 1 , wherein the first polymer enables dimensions of the housing to be configured to a housing accuracy claim 1 , and wherein the second polymer enables dimensions of the preset spatial relationship to be configured to a relationship accuracy more exact than the housing accuracy.7. A connector claim 1 , comprising:a housing having an aperture and comprising a recess;a ...

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Номер записи: 47
20-04-2017 дата публикации

PREPARATION OF MICRO-ELECTRODES

Номер: US20170106461A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

A method, consisting of providing a metal wire having a wire diameter and an end, and positioning a conductor at a distance from the end of the wire. The method further includes creating an electrical discharge between the conductor and the end, while setting the distance and an electrical potential of the discharge, so as to create a bead of a predefined size on the end. The method also includes assembling the wire with the created bead into an invasive probe, so that the bead is positioned at an outer surface of the probe. 1. A method , comprising:providing a metal wire having a wire diameter and an end;positioning a conductor at a distance from the end of the wire;creating an electrical discharge between the conductor and the end, while setting the distance and an electrical potential of the discharge, so as to create a bead of a predefined size on the end; andassembling the wire with the created bead into an invasive probe, so that the bead is positioned at an outer surface of the probe.2. The method according to claim 1 , wherein the metal wire has another end claim 1 , and comprising attaching a further metal wire to the other end to make an electrical contact claim 1 , and wherein assembling the wire comprises assembling the wire with the created bead and the attached further metal wire into the invasive probe.3. The method according to claim 2 , and comprising sliding then shrinking shrink sleeving over the created bead claim 2 , the metal wire claim 2 , the electrical contact claim 2 , and the further metal wire.4. The method according to claim 1 , and comprising sliding an electrically insulating sleeve over a portion of the wire not comprising the bead.5. The method according to claim 4 , wherein sliding the sleeve comprises sliding the sleeve to butt against the bead.6. The method according to claim 4 , wherein assembling the wire comprises assembling the wire with the created bead and the electrically insulating sleeve into the invasive probe.7. The ...

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Номер записи: 48
11-04-2019 дата публикации

METHOD OF PRODUCING A DENSELY PERFORATED TIPSHELL FROM FLAT GEOMETRY

Номер: US20190105698A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

A manufacturing method includes providing a flat sheet perforated with holes, which have respective initial shapes and respective axes of symmetry. The axes of symmetry of the holes point toward a common origin within the flat sheet. The perforated flat sheet is deep-drawn into a cylindrical shell using a punch centered about the common origin, including deforming the holes from the initial shapes into respective predefined final shapes having different aspect ratios relative to the initial shapes. 1. A manufacturing method , comprising:providing a flat sheet perforated with holes, which have respective initial shapes and respective axes of symmetry, wherein the axes of symmetry of the holes point toward a common origin within the flat sheet; anddeep-drawing the perforated flat sheet into a cylindrical shell using a punch centered about the common origin, including deforming the holes from the initial shapes into respective predefined final shapes having different aspect ratios relative to the initial shapes.2. The manufacturing method according to claim 1 , wherein deforming the holes comprises one or more of (i) elongating the holes along the axes of symmetry claim 1 , and (ii) compressing the holes perpendicularly to the axes of symmetry.3. The manufacturing method according to claim 1 , wherein the initial shapes of the holes are elliptical.4. The manufacturing method according to claim 3 , wherein the axes of symmetry of the holes comprise minor axes of elliptical holes claim 3 , wherein axes perpendicular to the axes of symmetry comprise major axes of the elliptical holes claim 3 , and wherein deforming the holes comprises deforming the elliptical holes into respective circular holes.5. The manufacturing method according to claim 1 , wherein holes that are distributed along different concentric circles surrounding the common origin have different respective initial shapes.6. The manufacturing method according to claim 1 , and comprising assembling the ...

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Номер записи: 49
26-04-2018 дата публикации

CATHETER DISTAL END MADE OF PLASTIC TUBE AND FLEXIBLE PRINTED CIRCUIT BOARDS

Номер: US20180110562A1
Автор: Algawi Yehuda, Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Sitnitsky Ilya
Принадлежит:

A catheter includes an insertion tube, a flexible substrate and one or more electrical devices. The insertion tube is configured for insertion into a patient body. The flexible substrate is configured to wrap around a distal end of the insertion tube and includes electrical interconnections. The electrical devices are coupled to the flexible substrate and are connected to the electrical interconnections. 1. A catheter , comprising:an insertion tube for insertion into a patient body;a flexible substrate, which is configured to wrap around a distal end of the insertion tube and which comprises electrical interconnections; andone or more electrical devices, which are coupled to the flexible substrate and are connected to the electrical interconnections.2. The catheter according to claim 1 , wherein the insertion tube is made of plastic.3. The catheter according to claim 1 , wherein the insertion tube is hollow so as to form an internal lumen for leading one or more electrical wires to the distal end.4. The catheter according to claim 1 , wherein the insertion tube is hollow so as to form an internal lumen for leading one or more irrigation tubes to the distal end.5. The catheter according to claim 1 , wherein the flexible substrate comprises a flexible printed circuit board (PCB) claim 1 , and wherein the electrical interconnections comprise conductive traces.6. The catheter according to claim 1 , wherein the flexible substrate comprises one or more films that plate the distal end so as to form at least some of the electrical interconnections and the electrical devices.7. The catheter according to claim 1 , wherein the flexible substrate is perforated so as to form irrigation holes.8. The catheter according to claim 1 , wherein the electrical devices comprise one or more electrodes.9. The catheter according to claim 1 , wherein the electrical devices comprise one or more thermocouples.10. The catheter according to claim 1 , wherein the electrical devices comprise one ...

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Номер записи: 50
30-04-2015 дата публикации

SPECTRAL SENSING OF ABLATION

Номер: US20150119872A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf, Keyes Joseph Thomas
Принадлежит:

A method for tissue assessment includes ablating tissue at a site within a body of a living subject using an invasive probe applied to the site. At a first stage in ablation of the tissue, first measurements are made of scattered light intensities from the site at a plurality of different wavelengths. At a second stage in the ablation of the tissue, subsequent to the first stage, second measurements are made of the scattered light intensities from the site at the plurality of different wavelengths. Progress of the ablation is assessed by computing different, respective measures of change in the scattered light intensities at the different wavelengths occurring between the first and second measurements, and comparing the respective measures. 1. A method for tissue assessment , comprising:ablating tissue at a site within a body of a living subject using an invasive probe applied to the site;at a first stage in ablation of the tissue, making first measurements of scattered light intensities from the site at a plurality of different wavelengths;at a second stage in the ablation of the tissue, subsequent to the first stage, making second measurements of the scattered light intensities from the site at the plurality of different wavelengths; andassessing a progress of the ablation by computing different, respective measures of change in the scattered light intensities at the different wavelengths occurring between the first and second measurements, and comparing the respective measures.2. The method according to claim 1 , wherein ablating the tissue comprises ablating myocardial tissue in a heart of the subject.3. The method according to claim 1 , wherein ablating the tissue comprises inserting a catheter into the body and applying energy to the tissue via the catheter.4. The method according to claim 1 , wherein making the first and second measurements comprises directing light toward the site from an emitter in the probe claim 1 , and collecting the light scattered from ...

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Номер записи: 51
13-05-2021 дата публикации

CATHETER DISTAL END MADE OF PLASTIC TUBE AND FLEXIBLE PRINTED CIRCUIT BOARDS

Номер: US20210137594A1
Автор: Algawi Yehuda, Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Sitnitsky Ilya
Принадлежит:

A catheter includes an insertion tube, a flexible substrate and one or more electrical devices. The insertion tube is configured for insertion into a patient body. The flexible substrate is configured to wrap around a distal end of the insertion tube and includes electrical interconnections. The electrical devices are coupled to the flexible substrate and are connected to the electrical interconnections. 2. The catheter according to claim 1 , wherein the internal member is hollow so as to form an internal lumen.3. The catheter according to claim 1 , wherein the sheet of the first flexible substrate or the sheet of the second flexible substrate comprises a flexible printed circuit board (PCB).4. The catheter according to claim 1 , wherein the sheet of the first flexible substrate comprises one or more films so as to form at least some of the conductive traces and the one or more electrical devices.5. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more electrodes.6. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more thermocouples.7. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more thermistors.8. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more pressure sensors.9. The catheter according to claim 1 , wherein the one or more electrical devices comprise one or more position sensors.10. The catheter according to claim 1 , wherein the respective sheets of the first and second flexible substrates comprise a single contiguous section.11. The catheter according to claim 1 , wherein the first and second edges of the sheet of first flexible substrate are welded to one another when wrapped around the distal end.12. The catheter according to claim 1 , wherein the dome-cover is glued to the apex of the distal end.13. The catheter according to claim 1 , wherein the dome-cover comprises a ...

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Номер записи: 52
18-04-2019 дата публикации

HIGH-VOLUME MANUFACTURING OF CATHETERS COMPRISING ELECTRODES HAVING LOW IMPEDANCE AT LOW FREQUENCY

Номер: US20190111233A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

A method for producing a distal-end assembly of a medical device, the method includes disposing a first layer on at least part of a given section among one or more sections of a flexible substrate. At one or more selected locations on the given section, which are to serve as electrodes on the distal-end assembly of the medical device, a second layer is disposed so that, when brought into contact with tissue, the second layer has a reduced impedance for transferring electrical signals to or from the tissue at a predefined frequency range, relative to the first layer. The given section is shaped to form the distal-end assembly. 1. A method for producing a distal-end assembly of a medical device , the method comprising:disposing a first layer on at least part of a given section among one or more sections of a flexible substrate;at one or more selected locations on the given section, which are to serve as electrodes on the distal-end assembly of the medical device, disposing a second layer that, when brought into contact with tissue, has a reduced impedance for transferring electrical signals to or from the tissue at a predefined frequency range, relative to the first layer; andshaping the given section to form the distal-end assembly.2. The method according to claim 1 , wherein shaping the given section comprises cutting the flexible substrate to separate the given section from one or more neighboring sections.3. The method according to claim 1 , wherein shaping the given section comprises wrapping the given section around a distal end of the medical device.4. The method according to claim 1 , wherein disposing the first layer comprises depositing a gold layer on the given section claim 1 , and patterning the gold layer so as to retain only parts of the gold layer on the at least part of the given section.5. The method according to claim 1 , wherein disposing the second layer comprises disposing one or more sublayers of materials selected from a list consisting of ...

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Номер записи: 53
09-04-2020 дата публикации

MALLEABLE SUCTION DEVICE

Номер: US20200107704A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf, Okarski Kevin Mark
Принадлежит:

A surgical tool, consisting of a handle and a flexible insertion tube, having a proximal end coupled to the handle and a distal end configured to be inserted into an orifice of a living subject. The tool has an inner tube, which is bendable without breaking over a range of angles in response to a bending force, and which retains the bent shape after the bending force has been removed. The inner tube is located within the insertion tube. A flexible tubing defines a lumen and is contained within the inner tube. A tool working tip is configured to contact tissue in the subject and to mate with a distal termination of the inner tube. A rigid outer tube grips outer surfaces of the working tip and of the inner tube so as to maintain an opening of the working tip in communication with the flexible tubing lumen. 1. A surgical tool , comprising:a handle;a flexible insertion tube, having a proximal end coupled to the handle and a distal end configured to be inserted into an orifice of a body of a living subject;an inner tube, which is bendable without breaking over a range of angles from 0 to 120 degrees in response to a bending force, and which is configured, after being bent into a bent shape, to retain the bent shape after the bending force has been removed, the inner tube being located within the insertion tube and having a distal termination in proximity to the distal end of the insertion tube;a flexible tubing, which defines a lumen and which is contained within the inner tube;a working tip, which has an opening, and which is configured to contact tissue in the body and to mate with the distal termination of the inner tube; anda rigid outer tube, which grips respective outer surfaces of the working tip and of the inner tube so as to maintain the opening of the working tip in communication with the flexible tubing lumen.2. The surgical tool according to and comprising at least one magnetic sensor located in proximity to the working tip.3. The surgical tool according to ...

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Номер записи: 54
25-04-2019 дата публикации

INTEGRATED LC FILTERS IN CATHETER DISTAL END

Номер: US20190117296A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

A distal-end assembly of a medical device, the distal-end assembly includes a flexible substrate and electrical conductors. The flexible substrate is configured to be coupled to a distal end of an insertion tube. The electrical conductors are disposed on the flexible substrate and are shaped to form: (i) one or more electrodes, configured to exchange electrical signals with a proximal end of the medical device, and (ii) one or more printed filters, which are disposed adjacently to at least one of the electrodes and are configured to filter signals in a predefined frequency range from the electrical signals exchanged between the at least one of the electrodes and the proximal end. 1. A distal-end assembly of a medical device , the distal-end assembly comprising:a flexible substrate, which is configured to be coupled to a distal end of an insertion tube; andelectrical conductors, which are disposed on the flexible substrate and are shaped to form:(i) one or more electrodes, configured to exchange electrical signals with a proximal end of the medical device, and (ii) one or more printed filters, which are disposed adjacently to at least one of the electrodes and are configured to filter signals in a predefined frequency range from the electrical signals exchanged between the at least one of the electrodes and the proximal end.2. The distal-end assembly according to claim 1 , wherein at least one of the printed filters is shaped to form at least one of an inductor and a capacitor.3. The distal-end assembly according to claim 2 , wherein the inductor and the capacitor are connected in parallel.4. The distal-end assembly according to claim 1 , wherein the predefined frequency range comprises at least part of a radio frequency (RF) frequency range.5. The distal-end assembly according to claim 1 , wherein the signals filtered in the predefined frequency range are caused by a magnetic resonance imaging (MRI) system.6. The distal-end assembly according to claim 1 , wherein ...

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Номер записи: 55
25-04-2019 дата публикации

INTEGRATED RESISTIVE FILTERS IN CATHETER DISTAL END

Номер: US20190117297A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A distal-end assembly of a medical device, the distal-end assembly includes a flexible substrate and electrical conductors. The flexible substrate is configured to be coupled to a distal end of an insertion tube. The electrical conductors are disposed on the flexible substrate and are shaped to form: (i) one or more electrodes, configured to exchange electrical signals with a proximal end of the medical device, and (ii) one or more printed filters shaped to form at least a resistor, which are disposed adjacently to at least one of the electrodes and are configured to filter signals in a predefined frequency range from the electrical signals exchanged between the at least one of the electrodes and the proximal end. 1. A distal-end assembly of a medical device , the distal-end assembly comprising:a flexible substrate, which is configured to be coupled to a distal end of an insertion tube; andelectrical conductors, which are disposed on the flexible substrate and are shaped to form:(i) one or more electrodes, configured to exchange electrical signals with a proximal end of the medical device, and (ii) one or more printed filters shaped to form at least a resistor, which are disposed adjacently to at least one of the electrodes and are configured to filter signals in a predefined frequency range from the electrical signals exchanged between the at least one of the electrodes and the proximal end.2. The distal-end assembly according to claim 1 , wherein the predefined frequency range comprises at least part of a radio frequency (RF) frequency range.3. The distal-end assembly according to claim 1 , wherein the signals filtered in the predefined frequency range are caused by a magnetic resonance imaging (MRI) system.4. The distal-end assembly according to claim 1 , wherein the flexible substrate comprises a flexible printed circuit board (PCB).5. The distal-end assembly according to claim 1 , wherein the flexible substrate is configured to wrap around the distal end of the ...

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Номер записи: 56
25-04-2019 дата публикации

CATHETER WITH IMPROVED TEMPERATURE RESPONSE

Номер: US20190117298A1
Автор: Beeckler Christopher Thomas
Принадлежит:

A medical probe, consisting of an insertion tube having a distal end configured for insertion into a body of a patient and containing a lumen having an electrical conductor for conveying electrical energy. The probe also has a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, the cap including a side wall having multiple longitudinal bores therein. There are a plurality of thermocouples disposed in respective ones of the longitudinal bores, and an electrically conductive cement at least partially fills the longitudinal bores so as to secure the thermocouples in the bores while making electrically conductive contact between the thermocouples and the conductive cap. 1. A medical probe , comprising:an insertion tube having a distal end configured for insertion into a body of a patient and containing a lumen having an electrical conductor for conveying electrical energy;a conductive cap attached to the distal end of the insertion tube and coupled electrically to the electrical conductor, the cap comprising a side wall having multiple longitudinal bores therein;a plurality of thermocouples disposed in respective ones of the longitudinal bores; andan electrically conductive cement at least partially filling the longitudinal bores so as to secure the thermocouples in the bores while making electrically conductive contact between the thermocouples and the conductive cap.2. The probe according to claim 1 , wherein the electrically conductive cement is thermally conductive.3. The probe according to claim 1 , wherein the conductive cap has a cap thermal conductivity claim 1 , and the electrically conductive cement has a cement thermal conductivity at least 25% of the cap thermal conductivity.4. The probe according to claim 1 , wherein the plurality of thermocouples comprises a first electrical conductor having a first composition electrically connected at respective junctions to a multiplicity of second ...

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Номер записи: 57
25-04-2019 дата публикации

DETERMINING BALLOON CATHETER CONTACT WITH ANATOMY USING ULTRASOUND

Номер: US20190117315A1
Автор: Altmann Andres, Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas, Wilczynski Maribeth
Принадлежит: Biosense Webster (Israel) Ltd.

A medical system includes a shaft, an inflatable balloon, a radial array of ultrasound transducers and a processor. The shaft is configured for insertion into a body of a patient. The inflatable balloon is coupled to a distal end of the shaft and configured to perform a treatment to surrounding anatomy. The ultrasound transducers are distributed circumferentially around the distal end of the shaft inside the balloon, and configured to transmit ultrasound waves at respective radial directions and receive respective ultrasound reflections. The processor is configured to estimate and output to a user, based on the ultrasound reflections received from the ultrasound transducers, an extent of mechanical contact between the balloon and the surrounding anatomy. 1. A medical system , comprising:a shaft for insertion into a body of a patient;an inflatable balloon coupled to a distal end of the shaft, and configured to perform a treatment to surrounding anatomy;a radial array of ultrasound transducers, which are distributed circumferentially around the distal end of the shaft inside the balloon, and are configured to transmit ultrasound waves at respective radial directions and receive respective ultrasound reflections; anda processor, configured to estimate and output to a user, based on the ultrasound reflections received from the ultrasound transducers, an extent of mechanical contact between the balloon and the surrounding anatomy.2. The medical system according to claim 1 , wherein the inflatable balloon is configured to perform at least one of RF ablation claim 1 , microwave ablation claim 1 , irreversible electroporation claim 1 , cryo-ablation claim 1 , angioplasty claim 1 , valvuloplasty and pulmonary dilation treatment.3. The medical system according to claim 1 , wherein the radial array of ultrasound transducers is configured to transmit the ultrasound waves at respective radial directions and receive the respective ultrasound reflections at the respective radial ...

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Номер записи: 58
16-04-2020 дата публикации

CATHETER TIP WITH MICROELECTRODES

Номер: US20200113628A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

Apparatus, having an insertion tube that is configured to be inserted into a body cavity. The apparatus also includes a distal tip connected to the insertion tube, the distal tip having an external surface and a cavity formed in the external surface, the cavity being surrounded by a region of the external surface having a curvature. The apparatus further includes a microelectrode configured to fit into the cavity so that a surface of the microelectrode is contoured, located and oriented to conform with the curvature of the region. 111-. (canceled)12. A method , comprising:providing an insertion tube that is configured to be inserted into a body cavity;connecting a distal tip to the insertion tube, the distal tip having an external surface and a cavity formed in the external surface, the cavity being surrounded by a region of the external surface having a curvature; andfitting a microelectrode into the cavity so that a surface of the microelectrode is contoured, located and oriented to conform with the curvature of the region.13. The method according to claim 12 , wherein the external surface of the distal tip and the surface of the microelectrode are defined by a common equation.14. The method according to claim 12 , and comprising locating insulation between the microelectrode and the distal tip so as to electrically insulate the microelectrode from the distal tip.15. The method according to claim 12 , and comprising connecting at least one conductor claim 12 , insulated from the distal tip claim 12 , to the microelectrode and configuring the conductor to convey an electropotential generated by the body cavity and detected by the microelectrode.16. The method according to claim 12 , and comprising connecting at least two conductors of two different materials at a junction to form a thermocouple claim 12 , and connecting the junction to the microelectrode so as to provide a signal representative of a temperature of the microelectrode.17. The method according to ...

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Номер записи: 59
27-05-2021 дата публикации

Heat Transfer Through an Ablation Electrode

Номер: US20210153930A1
Автор: Beeckler Christopher Thomas, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит:

An apparatus includes a flexible electrically-insulating substrate including an inner surface and an outer surface. The substrate is shaped to define multiple channels passing between the inner surface and the outer surface, at least some of the channels being concave channels. The apparatus further includes an outer layer of an electrically-conducting metal covering at least part of the outer surface, an inner layer of the electrically-conducting metal covering at least part of the inner surface, and respective columns of the electrically-conducting metal that fill the channels such as to connect the outer layer to the inner layer. 1. Apparatus , comprising:a flexible electrically-insulating substrate, comprising an inner surface and an outer surface, and shaped to define multiple channels passing between the inner surface and the outer surface, at least some of the channels being concave channels;an outer layer of an electrically-conducting metal covering at least part of the outer surface;an inner layer of the electrically-conducting metal covering at least part of the inner surface; andrespective columns of the electrically-conducting metal that fill the channels such as to connect the outer layer to the inner layer.2. The apparatus according to claim 1 , wherein each of the concave channels comprises:a circular central channel-portion; andone or more peripheral channel-portions having arced perimeters and opening into the central channel-portion.3. The apparatus according to claim 2 , wherein the peripheral channel-portions consist of between two and eight peripheral channel-portions.4. The apparatus according to claim 3 , wherein the peripheral channel-portions consist of six peripheral channel-portions.5. The apparatus according to claim 4 , wherein some of the channels are circular channels claim 4 , and wherein the channels are arranged such that each of at least some of the circular channels is surrounded by a respective three of the concave channels.6. ...

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Номер записи: 60
10-05-2018 дата публикации

COILS FORMED IN FOLDED NITINOL SHEET

Номер: US20180125382A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Liu Jiayin
Принадлежит:

A contact force sensor is constructed using a spring in which a resilient member is interposed between two contacting elements. Extensions connected to the resilient member are in contact with the elements. A force applied to at least one of the elements causes a deformation of the spring that correlates with a displacement of the elements relative to one another. 1. An apparatus , comprising:a spring having a resilient member interposed between two contacting elements; andextensions connected to the resilient member that are in contact with the elements, wherein a force applied to at least one of the elements causes a deformation of the spring that correlates with a displacement of the elements relative to one another.2. The apparatus according to claim 1 , wherein the resilient member comprises a central ring having first segments and second segments claim 1 , wherein the first segments are disposed on one side of a plane and the second segments are disposed on another side of the plane and the deformation comprises approximating the first segments and the second segments to the plane.3. The apparatus according to claim 1 , wherein the resilient member comprises a central ring having a sinusoidal configuration with radial oscillations toward and away from a central point of the ring.4. The apparatus according to wherein the resilient member comprises a central ring comprising a plurality of sectors claim 1 , each of the sectors formed into two hairpin curves.5. The apparatus according to claim 4 , wherein the deformation comprises a torsion of at least one of the elements relative to another of the elements.6. The apparatus according to claim 1 , wherein the extensions comprise a plurality of legs attached to a central ring claim 1 , including first legs and second legs claim 1 , wherein the first legs and the second legs extend respectively in opposite first and second perpendicular directions to the ring.7. The apparatus according to claim 6 , further comprising ...

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Номер записи: 61
02-05-2019 дата публикации

ALL-IN-ONE SPIRAL CATHETER

Номер: US20190125437A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

Medical catheterization is carried out by introducing a catheter into a heart, sliding the catheter through a sheath that encloses a multi-electrode probe into a chamber of the heart. The sheath is retracted to expose the probe. As the sheath is retracted the exposed probe expands into a spiral configuration, and the electrodes contact the endocardial surface of the chamber at multiple contact points. 1. A method of medical catheterization , comprising the steps of:introducing a multi-electrode catheter into a heart,sliding the catheter into a chamber of the heart through a sheath;retracting the sheath to expose the catheter;while retracting the sheath expanding the exposed catheter into a spiral configuration; andcontacting the expanded catheter to an endocardial surface of the chamber at multiple contact points.2. The method according to claim 1 , wherein retracting the sheath is performed while holding the catheter in position.3. The method according to claim 1 , further comprising advancing the catheter while retracting the sheath.4. The method according to claim 1 , wherein the catheter comprises:a flexible, electrically insulated tube having an external surface;a plurality of ablation electrodes disposed on the external surface of the tube in electrical isolation from one another; anda plurality of microelectrodes in electrical isolation from one another and from the ablation electrodes, the method further comprising the steps of:reading bioelectrical signals from the heart with the microelectrodes; andconducting electrical energy through selected ones of the ablation electrodes to produce a lesion in the chamber of the heart.5. The method according to claim 4 , wherein the catheter further comprises a holding element claim 4 , further comprising contacting the holding element to a wall of the heart to provide purchase for the catheter on the wall claim 4 , the method further comprising the step of:while retracting the sheath, rotating the catheter with ...

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Номер записи: 62
30-04-2020 дата публикации

Electrodes on double-sided printed circuit board (pcb) to cancel far-field signal

Номер: US20200129128A1
Автор: Assaf Govari, Christopher Thomas Beeckler, Vadim Gliner
Принадлежит: Biosense Webster Israel Ltd

A medical apparatus includes a shaft for insertion into an organ of a patient, an expandable frame, a plurality of diagnostic electrodes, a respective plurality of reference electrodes, and a processor. The expandable frame is coupled to a distal end of the shaft, extending along a longitudinal axis and including a plurality of expandable spines disposed about the longitudinal axis. The plurality of diagnostic electrodes, disposed on external surfaces of the expandable spines, are configured to sense diagnostic signals when in contact with tissue. The respective plurality of reference electrodes, disposed on internal surfaces of the expandable spines directly opposite the diagnostic electrodes, is electrically insulated from the tissue and is configured to sense interfering signals. The processor is configured to receive the diagnostic signals sensed by the diagnostic electrodes, receive the interfering signals sensed by the respective reference electrodes, and calculate corrected diagnostic signals by subtracting the interfering signals from the diagnostic signals.

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Номер записи: 63
10-06-2021 дата публикации

Irreversible-electroporation (ire) balloon catheter with membrane-insulated high-voltage balloon wires

Номер: US20210169567A1
Автор: Andres Claudio Altmann, Assaf Govari, Christopher Thomas Beeckler
Принадлежит: Biosense Webster Israel Ltd

A medical probe includes a shaft and an expandable balloon. The shaft is configured for insertion into an organ of a patient. The expandable balloon is coupled to a distal end of the shaft, with the expandable balloon including: (a) an expandable membrane having an outer surface and an inner surface, wherein the expandable membrane is configured to be expanded from a collapsed shape to a balloon shaped member, (b) a plurality of electrodes disposed on the outer surface of the expandable membrane, (c) one or more wires connected to the plurality of electrodes, the wires extending from the distal end to the electrode, (d) and an expandable cover that encapsulates the wires between the expandable cover and the expandable membrane so that the wires are constrained between the cover and the expandable membrane but the electrodes are exposed to ambient environment.

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Номер записи: 64
28-05-2015 дата публикации

ROBOTIC ASSISTER FOR CATHETER INSERTION

Номер: US20150148816A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

Apparatus for controlling motion of an invasive probe relative to a sheath enclosing the probe. The apparatus includes an outer casing, configured for connection to the sheath. The apparatus further includes a drive mechanism, fixedly connected to the outer casing. The drive mechanism has a first set of components, configured to translate the probe along a direction parallel to an axis of the probe, in order to advance and retract the probe with respect to the sheath in a translational stepwise manner. The drive mechanism also includes a second set of components, configured to rotate the probe around the axis of the probe, in order to rotate the probe clockwise and counter-clockwise, with respect to the sheath, in a rotational stepwise manner. 1. Apparatus for controlling motion of an invasive probe relative to a sheath enclosing the probe , the apparatus comprising:an outer casing, configured for connection to the sheath; and a first set of components, configured to translate the probe along a direction parallel to an axis of the probe, in order to advance and retract the probe with respect to the sheath in a translational stepwise manner; and', 'a second set of components, configured to rotate the probe around the axis of the probe, in order to rotate the probe clockwise and counter-clockwise, with respect to the sheath, in a rotational stepwise manner., 'a drive mechanism, fixedly connected to the outer casing, the drive mechanism comprising2. The apparatus according to claim 1 , wherein the first set and the second set comprise a common sub-set of components comprising first and second grippers claim 1 , configured to releasably grip the probe in first and second positions.3. The apparatus according to claim 2 , wherein the first gripper is fixed relative to the sheath claim 2 , and wherein the second gripper is movable relative to the sheath.4. The apparatus according to claim 2 , wherein the first gripper grips the probe while the second gripper releases the ...

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Номер записи: 65
25-05-2017 дата публикации

HYPER-APERTURED ABLATION ELECTRODE

Номер: US20170143411A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

Ablation apparatus is provided. The apparatus includes an ablation electrode shaped to define a cavity thereof, and comprising a metallic distal face that is shaped to define a plurality of apertures. A fluid-delivery channel is configured to deliver fluid to the apertures. At least one ultrasound transducer is disposed within the cavity of the ablation electrode, the transducer being configured to transmit an ultrasound wave through the apertures. Other embodiments are also described. 1. Apparatus comprising:an ablation electrode shaped to define a cavity thereof, and comprising a metallic distal face that is shaped to define a plurality of apertures;a fluid-delivery channel, configured to deliver fluid to the apertures; andat least one ultrasound transducer disposed within the cavity of the ablation electrode, the transducer being configured to transmit an ultrasound wave through the apertures.2. The apparatus according to claim 1 , wherein a total surface area of the apertures is at least 20% of a total surface area of the distal face.3. The apparatus according to claim 2 , wherein the total surface area of the apertures is less than 50% of the total surface area of the distal face.4. The apparatus according to claim 1 , wherein the distal face is shaped to define at least 100 apertures.5. The apparatus according to claim 4 , wherein the distal face is shaped to define at least 200 apertures.6. The apparatus according to claim 1 , wherein a surface area of each of the apertures is less than 0.2% of a total surface area of the distal face.7. The apparatus according to claim 1 , wherein a thickness of the distal face is between 0.075 and 0.5 mm.8. The apparatus according to claim 1 , wherein the distal face comprises a mesh.9. The apparatus according to claim 8 , wherein part of the mesh defines a side wall of the ablation electrode.10. The apparatus according to claim 1 , wherein the transducer is disposed at least 0.5 mm from the distal face.11. The apparatus ...

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Номер записи: 66
07-05-2020 дата публикации

Attaining Higher Impedances for Large Indifferent Electrodes

Номер: US20200138512A1
Автор: Beeckler Christopher Thomas, Papaioannou Athanassios
Принадлежит:

Described embodiments include an apparatus that includes an electrically-conductive layer, including a first face and a second face that are opposite one another, a first electrically-insulative layer that is shaped to define a plurality of apertures and that covers the first face without covering portions of the first face that are aligned with the apertures, and a second electrically-insulative layer that covers the second face. Other embodiments are also described. 1. Apparatus , comprising:an electrically-conductive layer, comprising a first face and a second face that are opposite one another;a first electrically-insulative layer that is shaped to define a plurality of apertures and that covers the first face without covering portions of the first face that are aligned with the apertures; anda second electrically-insulative layer that covers the second face.2. The apparatus according to claim 1 ,wherein the electrically-conductive layer comprises an electrically-conductive plate,wherein the first electrically-insulative layer comprises a first electrically-insulative cover coupled to the first face of the plate, andwherein the second electrically-insulative layer comprises a second electrically-insulative cover coupled to the second face of the plate.3. The apparatus according to claim 2 , wherein the plate comprises one or more side faces disposed between the first face and the second face claim 2 , and wherein the second electrically-insulative cover covers the side faces.4. The apparatus according to claim 2 , wherein the apparatus comprises an electrically-insulative case that comprises the first cover and the second cover.5. The apparatus according to claim 1 ,wherein the second electrically-insulative layer comprises an electrically-insulative substrate,wherein the electrically-conductive layer comprises an electrically-conductive coating that coats the electrically-insulative substrate, andwherein the first electrically-insulative layer comprises an ...

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Номер записи: 67
07-05-2020 дата публикации

INDIFFERENT ELECTRODE WITH SELECTABLE AREA

Номер: US20200138513A1
Автор: Beeckler Christopher Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

A system includes an indifferent electrode, electrical switching circuitry, and a processor. The indifferent electrode, which is configured for placement on a body of a patient, includes multiple electrically-conducting sub-electrodes that are electrically-insulated from one another. The electrical switching circuitry is configured to receive a control signal that specifies a selected subset of the sub-electrodes, and in response to electrically connect the selected subset, so as to close an electrical circuit passing through the body of the patient. The processor is configured to determine a required surface area of the indifferent electrode, select the subset of the sub-electrodes that together have the required surface area, and instruct the electrical switching circuitry to electrically connect the selected subset of the sub-electrodes. 1. A system , comprising:an indifferent electrode, which is configured for placement on a body of a patient, the indifferent electrode comprising multiple electrically-conducting sub-electrodes that are electrically-insulated from one another;electrical switching circuitry, configured to receive a control signal that specifies a selected subset of the sub-electrodes, and in response to electrically connect the selected subset, so as to close an electrical circuit passing through the body of the patient; and determine a required surface area of the indifferent electrode;', 'select the subset of the sub-electrodes that together have the required surface area; and', 'instruct the electrical switching circuitry to electrically connect the selected subset of the sub-electrodes., 'a processor, which is configured to2. The system according to claim 1 , wherein the processor is configured to determine the required surface area based on an indication from an impedance measurement.3. The system according to claim 1 , wherein the processor is configured to determine the required surface area based on an input from a user.4. The system ...

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Номер записи: 68
17-06-2021 дата публикации

CATHETER WITH IRRIGATED TIP ELECTRODE WITH POROUS SUBSTRATE AND HIGH DENSITY SURFACE MICRO-ELECTRODES

Номер: US20210177510A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Papaioannou Athanassios
Принадлежит:

A catheter has a multifunctional “virtual” tip electrode with a porous substrate and a multitude of surface microelectrodes. The surface microelectrodes are in close proximity to each other and in a variety of configurations so as to sense tissue for highly localized intracardiac signal detection, and high density local electrograms and mapping. The porous substrate allows for flow of conductive fluid for ablating tissue. The surface microelectrodes can be formed via a metallization process that allows for any shape or size and close proximity, and the fluid “weeping” from the porous substrate provides more uniform irrigation in the form of a thin layer of saline. The delivery of RF power to the catheter tip is based on the principle of “virtual electrode,” where the conductive saline flowing through the porous tip acts as the electrical connection between the tip electrode and the heart surface. The substrate and the surface electrodes are constructed of MRI compatible materials so that the physician can conduct lesion assessment in real time during an ablation procedure. The surface electrodes include noble metals, including, for example, platinum, gold and combinations thereof. 1. A catheter comprising:an elongated catheter body; a porous substrate having an interior chamber adapted to receive conductive fluid,', 'a plurality of distal surface ring electrodes arranged on an outer surface of the porous substrate, and', 'a plurality of proximal surface electrodes arranged on the porous substrate proximal of the plurality of distal surface electrodes, the plurality of proximal surface electrodes being spaced apart from each other along a circumference of the porous substrate;, 'a distal electrode member comprisinga plurality of proximal lead traces, each of the plurality of proximal lead traces being connected to a respective one of the plurality of proximal surface electrodes;a plurality of distal lead traces, each of the plurality of distal lead traces being ...

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Номер записи: 69
24-06-2021 дата публикации

SELECTING CURSOR LOCATIONS ON MEDICAL IMAGE USING DIRECTIONS FROM DISTAL END OF PROBE

Номер: US20210186362A1
Автор: Beeckler Christopher Thomas, Gliner Vadim, Govari Assaf
Принадлежит:

A medical probe includes a tubular distal end section, which is configured to be inserted into a cavity of a patient, and includes (a) a visually guiding object disposed over a perimeter of the distal end section, and (b) a magnetic field sensor including two sensor coils aligned non-parallel with each other, the sensor attached to the distal end section, and having:(i) a first axis of symmetry, of one of the coils, which is aligned perpendicular to a central longitudinal axis of the distal end section, and (ii) a second axis of symmetry, of the remaining coil, which is aligned perpendicular to the central longitudinal axis of the distal end section and not parallel to the first axis of symmetry. 1. A medical probe , comprising a tubular distal end section configured to be inserted into a cavity of a patient , wherein the distal end section comprises:a visually guiding object disposed over a perimeter of the distal end section; and a first axis of symmetry, of one of the coils, which is aligned perpendicular to a central longitudinal axis of the distal end section; and', 'a second axis of symmetry, of the remaining coil, which is aligned perpendicular to the central longitudinal axis of the distal end section and not parallel to the first axis of symmetry., 'a magnetic field sensor comprising two sensor coils aligned non-parallel with each other, the sensor attached to the distal end section, and having2. The probe according to claim 1 , wherein the visually guiding object comprises a guiding bump.3. The probe according to claim 1 , wherein the visually guiding object comprises one or more colored angular sections of the perimeter of the distal end section.4. The probe according to claim 1 , wherein the two sensor coils are mutually orthogonal.5. A system claim 1 , comprising: 'a visually guiding object disposed over a perimeter of a distal edge of the distal end; and', 'a probe, comprising a tubular distal end section configured to be inserted into a cavity of a ...

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Номер записи: 70
24-06-2021 дата публикации

Expandable Assembly Catheter

Номер: US20210187241A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin, Keyes Joseph Thomas, Squires Alexander David
Принадлежит:

One embodiment includes a catheter apparatus, including an elongated deflectable element including a distal end, a coupler connected to the distal end, a pusher including a distal portion, and configured to be advanced and retracted through the deflectable element, a nose connector connected to the distal portion, and including a distal receptacle having an inner surface and a distal facing opening, and an expandable assembly including flexible polymer circuit strips, each strip including electrodes disposed thereon, the strips being disposed circumferentially around the distal portion of the pusher, with first ends of the strips being connected to the coupler and second ends of the strips including respective hinges entering the distal facing opening and connected to the inner surface of the distal receptacle, the strips being configured to bow radially outward when the pusher is retracted expanding the expandable assembly from a collapsed form to an expanded form. 1. A catheter apparatus , comprising:an elongated deflectable element including a distal end;a coupler connected to the distal end;a pusher including a distal portion, and being configured to be advanced and retracted through the deflectable element;a nose connector connected to the distal portion of the pusher, and including a distal receptacle having an inner surface and a distal facing opening; andan expandable assembly comprising a plurality of flexible polymer circuit strips, each flexible polymer circuit strip including multiple electrodes disposed thereon, the flexible polymer circuit strips being disposed circumferentially around the distal portion of the pusher, with first ends of the strips being connected to the coupler and second ends of the strips comprising respective hinges entering the distal facing opening and connected to the inner surface of the distal receptacle of the nose connector, the strips being configured to bow radially outward when the pusher is retracted expanding the ...

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Номер записи: 71
24-06-2021 дата публикации

Contact Force Spring with Mechanical Stops

Номер: US20210187254A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

A catheter apparatus, including an elongated deflectable element, a distal assembly, a force sensor disposed between the elongated deflectable element and the distal assembly, and comprising a spring including a tube with at least one helical cut extending around a circumference of the tube, the at least one helical cut including deviations extending in a longitudinal direction of the tube, the deviations being configured to prevent overstretching and overbending of the spring. 1. A catheter apparatus , comprising:an elongated deflectable element;a distal assembly;a force sensor disposed between the elongated deflectable element and the distal assembly, and comprising a spring including a tube with at least one helical cut extending around a circumference of the tube, the at least one helical cut including deviations extending in a longitudinal direction of the tube, the deviations being configured to prevent overstretching and overbending of the spring.2. The apparatus according to claim 1 , wherein respective ones of the deviations include respective opposing sigmoid curves.3. The apparatus according to claim 1 , wherein respective ones of the deviations of the helical cuts define respective mechanical stops claim 1 , each mechanical stop including opposing surfaces which are configured to come into contact with each other to prevent overstretching and overbending of the spring.4. The apparatus according to claim 3 , wherein respective ones of the mechanical stops are configured to engage simultaneously so that a force applied on the spring is shared among the respective mechanical stops to prevent sequential failure of the respective mechanical stops.5. The apparatus according to claim 4 , wherein the at least one helical cut comprises multiple helical cuts claim 4 , respective ones of the mechanical stops of each of the helical cuts being configured to engage simultaneously.6. The apparatus according to claim 4 , wherein the at least one helical cut comprises ...

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Номер записи: 72
14-06-2018 дата публикации

CATHETER SPLINES WITH EMBEDDED CIRCUIT ELEMENTS

Номер: US20180160936A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas
Принадлежит: Biosense Webster (Israel) Ltd.

Medical apparatus includes one or more magnetic field generators, which are configured to generate magnetic fields within a body of a patient. An invasive probe includes an insertion tube having a distal end, which is configured for insertion into the body, and a plurality of flexible splines configured to be deployed from the distal end of the insertion tube. Each spline includes a flexible, multilayer circuit board and a conductive trace that is formed in at least one layer of the circuit board and is configured to define one or more coils, which are disposed along a length of the spline and output electrical signals in response to the magnetic fields. A processor is coupled to receive and process the electrical signals output by the coils in order to derive respective positions of the flexible splines in the body. 1. Medical apparatus , comprising:one or more magnetic field generators, which are configured to generate magnetic fields within a body of a patient; an insertion tube having a distal end, which is configured for insertion into the body; and', 'a plurality of flexible splines configured to be deployed from the distal end of the insertion tube, each spline comprising a flexible, multilayer circuit board and a conductive trace that is formed in at least one layer of the circuit board and is configured to define one or more coils, which are disposed along a length of the spline and output electrical signals in response to the magnetic fields; and, 'an invasive probe, which comprisesa processor, which is coupled to receive and process the electrical signals output by the coils in order to derive respective positions of the flexible splines in the body.2. The apparatus according to claim 1 , wherein the flexible splines have respective distal and proximal extremities and are connected together at both the distal and proximal extremities to define a basket assembly claim 1 , which has a collapsed configuration claim 1 , in which the splines are held parallel ...

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Номер записи: 73
01-07-2021 дата публикации

DEVICE AND METHOD OF DETERMINING LOCATION OF SHEATH USING ELECTROMAGNETIC SENSORS ON SHEATH

Номер: US20210196394A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Herrera Kevin Justin
Принадлежит: Biosense Webster (Israel) Ltd.

A medical tool for use with an electromagnetic navigation system includes a catheter configured to be navigated within patient anatomy and at least one electromagnetic sensor, disposed at the catheter, configured to generate electrical signals indicative of a location of the catheter in response to receiving at least one magnetic field. The medical tool also includes a sheath configured to receive the catheter, a first electromagnetic sensor and a second electromagnetic sensor, disposed at a first region of the sheath, each configured to generate electrical signals indicative of a location of the sheath in response to receiving the at least one magnetic field and a third electromagnetic sensor, disposed at a second region of the sheath spaced from the first region, configured to generate electrical signals indicative of a location of the sheath in response to receiving the at least one magnetic field. 1. A medical tool for use with an electromagnetic navigation system comprising:a catheter configured to be navigated within patient anatomy;at least one electromagnetic sensor, disposed at the catheter, configured to generate electrical signals indicative of a location of the catheter in response to receiving at least one magnetic field;a sheath configured to receive the catheter;a first electromagnetic sensor and a second electromagnetic sensor, disposed at a first region of the sheath, each configured to generate electrical signals indicative of a location of the sheath in response to receiving the at least one magnetic field; anda third electromagnetic sensor, disposed at a second region of the sheath spaced from the first region, configured to generate electrical signals indicative of a location of the sheath in response to receiving the at least one magnetic field.2. The medical tool according to claim 1 , wherein the first electromagnetic sensor and the second electromagnetic sensor are disposed at a distal region of a deflectable portion of the sheath and the ...

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Номер записи: 74
23-06-2016 дата публикации

Balloon for ablation around pulmonary veins

Номер: US20160175041A1
Автор: Assaf Govari, Christopher Thomas Beeckler, Joseph Thomas Keyes, Rowan Olund Hettel
Принадлежит: Biosense Webster Israel Ltd

Cardiac ablation is carried out by introducing a catheter into the left atrium, extending a lasso guide through the lumen of the catheter to engage the wall of a pulmonary vein, and deploying a balloon over the lasso guide. The balloon has an electrode assembly disposed its exterior. The electrode assembly includes a plurality of ablation electrodes circumferentially arranged about the longitudinal axis of the catheter. The inflated balloon is positioned against the pulmonary vein ostium, so that the ablation electrodes are in galvanic contact with the pulmonary vein, and electrical energy is conducted through the ablation electrodes to produce a circumferential lesion that circumscribes the pulmonary vein.

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Номер записи: 75
21-06-2018 дата публикации

Spring-Loaded Balloon

Номер: US20180168726A1
Автор: Beeckler Christopher Thomas, HETTEL Rowan Olund, Keyes Joseph Thomas
Принадлежит:

Cardiac catheterization is conducted using a probe having a balloon assembly, in which a spring has a resting axially elongated configuration and a torsed, axially shortened configuration. A balloon is twisted about the spring and mechanically linked to the spring. A flexible sheath is disposed about the spring within the balloon, the sheath and the wall of the balloon defining a chamber to contain a fluid flowing therein and thereout of the balloon. 1. An ablation apparatus comprising:a probe extending along a longitudinal axis and having a distally disposed balloon assembly, the balloon assembly comprising:a spring having an uncompressed torsionless configuration and a compressed, axially shortened configuration;a balloon mechanically linked to the spring and enclosing the spring, the balloon having a wall provided with electrodes for mapping or ablation, the wall having pores to allow a fluid to exit the balloon; anda flexible sheath disposed about the spring within the balloon, the sheath and the wall of the balloon defining a chamber to contain a fluid flowing therein to the balloon and out through the pores, wherein the balloon becomes radially enlarged when the spring is in the compressed, axially shortened configuration and the balloon becomes collapsed when the spring returns to the uncompressed torsionless configuration.2. The apparatus according to claim 1 , further comprising proximal and distal couplers attaching to the balloon and the sheath.3. The apparatus according to claim 2 , wherein the proximal and distal couplers are independently rotatable about the longitudinal axis.4. The apparatus according to claim 2 , wherein the proximal and distal couplers have a lumen for slidably receiving an extrusion therethrough claim 2 , the proximal and distal couplers being rotatable about the extrusion.5. The apparatus according to claim 2 , wherein at least one of the proximal and distal couplers has ports formed therein to establish fluid communication ...

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Номер записи: 76
21-06-2018 дата публикации

Extrusion with preferential bend axis

Номер: US20180169376A1
Автор: Christopher Thomas Beeckler, Joseph Thomas Keyes
Принадлежит: Biosense Webster Israel Ltd

A catheter is made by coextruding first and second molten polymers, wherein the second molten polymer forms a flexible inner core and the first molten polymer forms exactly two bands on opposite sides of the inner core. The inner core is braided, and a third molten polymer extruded onto the braid to form a flexible jacket that encloses the braid, the bands and the inner core. The bands are more rigid than the inner core, and they provide preferential in-plane bending.

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Номер записи: 77
21-06-2018 дата публикации

Layered tube for improved kink resistance

Номер: US20180169380A1
Автор: Christopher Thomas Beeckler
Принадлежит: Biosense Webster Israel Ltd

A catheter shaft is produced by forming a first polymeric layer onto a flexible inner core while maintaining the inner core in a solid state, and solidifying the first polymeric layer, wherein the solidified first polymeric layer fails to bond with the inner core and is slidable thereon upon flexion of the shaft. A second polymeric layer may be formed over the first polymeric layer, and is slidable thereon when the shaft bends.

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Номер записи: 78
22-06-2017 дата публикации

COLORED SILICONE FOR IMPLANT SAFETY

Номер: US20170172726A1
Автор: Beeckler Christopher Thomas
Принадлежит:

An implantable device includes a hollow biocompatible shell and filling material. The shell is configured to be implanted in an organ of a patient. The filling material is configured to fill the shell so as to assume a specified shape of the implantable device, and is visually distinguished from tissue of the organ that surrounds the implantable device. 1. An implantable device , comprising:a hollow biocompatible shell, configured to be implanted in an organ of a patient; andfilling material, which is configured to fill the shell so as to assume a specified shape of the implantable device, and which is visually distinguished from tissue of the organ that surrounds the implantable device.2. The implantable device according to claim 1 , wherein the filling material differs in color from the tissue by at least a predefined hue difference.3. The implantable device according to claim 2 , wherein the predefined hue difference is 4 degrees in accordance with a red-green-blue (RGB) hue scale.4. The implantable device according to claim 1 , wherein the tissue has a first color having a first dominant wavelength claim 1 , and wherein the filling material has a second color having a second dominant wavelength claim 1 , which differs from the first wavelength by at least a predefined wavelength difference.5. The implantable device according to claim 4 , wherein the predefined wavelength difference is 50 nm.6. The implantable device according to claim 1 , wherein the filling material comprises a fluorescent tracer that is adapted to glow when illuminated with light having a color selected from a list consisting of blue and ultra-violet (UV).7. The implantable device according to claim 1 , wherein the filling material is configured to shape a size and a contour of the organ.8. The implantable device according to claim 1 , wherein the filling material comprises silicone gel.9. The implantable device according to claim 1 , wherein the filling material comprises carbon black claim 1 ...

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Номер записи: 79
30-06-2016 дата публикации

MEASUREMENT OF TISSUE THICKNESS USING ULTRASOUND AND FORCE MEASUREMENTS

Номер: US20160183915A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Ephrath Yaron, Govari Assaf
Принадлежит: Biosense Webster (Israel) Ltd.

Wall thickness of a cavity is determined by inserting a catheter into contact with a wall of a cavity in a body of a subject. The distal segment of the catheter is provided with a contact force sensor and an ultrasound transducer. The transducer is actuated to acquire ultrasound reflection data from the wall of the cavity, and while the transducer is actuated, the catheter is reciprocated against the wall of the cavity and the contact force measured between the catheter and the wall of the cavity. The reflection data is correlated with the contact force. A set of the correlated reflection data having the highest correlation with the contact force is identified. The tissue thickness between the inner surface and the identified set of the reflection data is calculated according to the time-of-flight therebetween. 1. A method , comprising the steps of:inserting a catheter having a distal segment into contact with a wall of a cavity in a body of a subject, the cavity having an inner surface and an outer surface; the distal segment of the catheter being provided with a contact force sensor and an ultrasound transducer;actuating the transducer to acquire ultrasound reflection data from the wall of the cavity;while the transducer is actuated, reciprocating the catheter against the wall of the cavity and measuring a contact force between the catheter and the wall of the cavity;correlating the reflection data with the contact force;identifying a set of the correlated reflection data having a highest correlation with the contact force; anddetermining a tissue thickness between the inner surface and the identified set of the reflection data according to times-of-flight therebetween.2. The method according to claim 1 , further comprising ablating the wall of the cavity responsively to the tissue thickness.3. The method according to claim 1 , wherein actuating the transducer is performed in M-mode.4. The method according to claim 1 , wherein reciprocating the catheter is ...

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Номер записи: 80
30-06-2016 дата публикации

CATHETER WITH IRRIGATED TIP ELECTRODE WITH POROUS SUBSTRATE AND HIGH DENSITY SURFACE MICRO-ELECTRODES

Номер: US20160184008A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Papaioannou Athanassios
Принадлежит:

A catheter has a multifunctional “virtual” tip electrode with a porous substrate and a multitude of surface microelectrodes. The surface microelectrodes are in close proximity to each other and in a variety of configurations so as to sense tissue for highly localized intracardiac signal detection, and high density local electrograms and mapping. The porous substrate allows for flow of conductive fluid for ablating tissue. The surface microelectrodes can be formed via a metallization process that allows for any shape or size and close proximity, and the fluid “weeping” from the porous substrate provides more uniform irrigation in the form of a thin layer of saline. The delivery of RF power to the catheter tip is based on the principle of “virtual electrode,” where the conductive saline flowing through the porous tip acts as the electrical connection between the tip electrode and the heart surface. The substrate and the surface electrodes are constructed of MRI compatible materials so that the physician can conduct lesion assessment in real time during an ablation procedure. The surface electrodes include noble metals, including, for example, platinum, gold and combinations thereof. 1. A catheter comprising:an elongated catheter body;a distal electrode member having a porous substrate and a plurality of surface electrodes on portions of an outer surface of the porous substrate, the porous substrate having an interior chamber adapted to receive conductive fluid;a plurality of lead wires, each connected to a respective surface electrode; anda lead wire having a distal portion extending into the interior chamber, the lead wire adapted to electrify the conductive fluid in the chamber,wherein the porous substrate is adapted to pass the conductive fluid from the chamber to the outer surface of the porous substrate.2. The catheter of claim 1 , wherein the porous substrate comprises an MRI-compatible material.3. The catheter of claim 1 , wherein the surface electrodes ...

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Номер записи: 81
13-06-2019 дата публикации

BALLOON CATHETER DISTAL END COMPRISING ELECTRODES AND THERMOCOUPLES

Номер: US20190175262A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A method for producing a medical instrument, the method includes coupling a balloon-based distal end of the medical instrument to a jig that sets the distal end to an expanded position. While the distal end is coupled to the jig, one or more electrodes are disposed on an outer surface of the distal end, one or more openings are formed in a wall of the distal end, and are threaded through the openings respective leads coupled to at least one of respective sensors and electrodes that are mounted on the outer surface of the distal end. One or more patches that cover the openings and couple the at least one of respective sensors and electrodes to the outer surface of the distal end, are coupled on the outer surface of the distal end. 1. A method for producing a medical instrument , the method comprising:coupling a balloon-based distal end of the medical instrument to a jig that sets the distal end to an expanded position; and depositing one or more electrodes on an outer surface of the distal end;', 'forming one or more openings in a wall of the distal end, and threading through the openings respective leads coupled to at least one of respective sensors and electrodes that are mounted on the outer surface of the distal end; and', 'coupling, on the outer surface of the distal end, one or more patches that cover the openings and couple the at least one of respective sensors and electrodes to the outer surface of the distal end., 'while the distal end is coupled to the jig2. The method according to claim 1 , wherein forming the openings comprises cutting a latitudinal opening in the wall of the balloon-based distal end.3. The method according to claim 1 , wherein the sensors comprise one or more thermocouples (TCs).4. The method according to claim 1 , wherein coupling the balloon-based distal end to the jig comprises inserting the balloon-based distal end into a hollow templates having one or more patterned openings.5. The method according to claim 4 , wherein depositing ...

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Номер записи: 82
15-07-2021 дата публикации

EAR-NOSE-THROAT (ENT) HOLLOW GUIDEWIRE WITH BALLOON

Номер: US20210213258A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A medical probe includes a hollow guidewire, a balloon, and a magnetic position sensor. The hollow guidewire is configured for insertion into a channel of an organ of a patient. The balloon is fixed to a distal end of the hollow guidewire, is configured to be inserted into the channel using the hollow guidewire, and is further configured to be inflated by pumping of fluid through the hollow guidewire. The magnetic position sensor is fitted at the distal end of the hollow guidewire. 1. A medical probe , comprising:a hollow guidewire for insertion into a channel of an organ of a patient;a balloon fixed to a distal end of the hollow guidewire, wherein the balloon is configured to be inserted into the channel using the hollow guidewire and is further configured to be inflated by pumping of fluid through the hollow guidewire; anda magnetic position sensor fitted at the distal end of the hollow guidewire.2. The medical probe according to claim 1 , wherein the hollow guidewire comprises a coil-reinforced polyimide polymer tube.3. The medical probe according to claim 1 , wherein the hollow guidewire comprises a braid-reinforced polymer tube.4. The medical probe according to claim 1 , wherein a distal edge of the hollow guidewire protrudes beyond the balloon.5. The medical probe according to claim 1 , wherein the magnetic position sensor is formed on a flexible printed-circuit-board wrapped around the distal end of the hollow guidewire.6. A manufacturing method claim 1 , comprising:providing a hollow guidewire for insertion into a channel of an organ of a patient;attaching a balloon to a distal end of the hollow guidewire so that the hollow guidewire protrudes beyond the balloon; andfitting a magnetic position sensor at the distal end of the hollow guidewire.7. The manufacturing method according to claim 6 , wherein providing the hollow guidewire comprises providing a coil-reinforced polymer tube.8. The manufacturing method according to claim 6 , wherein providing the hollow ...

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Номер записи: 83
18-09-2014 дата публикации

CATHETER WITH SPRAY IRRIGATION

Номер: US20140276562A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Nakagawa Hiroshi
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

A medical probe, including a flexible insertion tube having a distal end for insertion into a body cavity, and a channel contained within the insertion tube and configured to convey a fluid to the distal end. A terminal member is fixed to the distal end of the insertion tube and includes a distal tip configured to be brought into contact with tissue in the body cavity, the distal tip having a first diameter, and a protruding shoulder surrounding the distal tip and having a second diameter, which is greater than the first diameter. The distal tip has one or more spray ports passing through the shoulder which are coupled to the channel so as to direct the fluid from the shoulder toward the tissue so as to irrigate the tissue. 1. A medical probe , comprising:a flexible insertion tube having a distal end for insertion into a body cavity;a channel contained within the insertion tube and configured to convey a fluid to the distal end; and a distal tip configured to be brought into contact with tissue in the body cavity, the distal tip having a first diameter; and', 'a protruding shoulder surrounding the distal tip and having a second diameter, which is greater than the first diameter; and', 'one or more spray ports passing through the shoulder and coupled to the channel so as to direct the fluid from the shoulder toward the tissue so as to irrigate the tissue., 'a terminal member fixed to the distal end of the insertion tube and comprising2. The probe according to claim 1 , wherein the distal tip comprises a metal tip.3. The probe according to claim 1 , and comprising a temperature sensor contained within the distal tip.4. The probe according to claim 3 , wherein the temperature sensor comprises a thermocouple.5. The probe according to claim 1 , wherein the one or more spray ports are dimensioned and oriented so to direct the fluid away from the distal tip.6. The probe according to claim 5 , wherein a dimension of the one or more spray ports comprises a spray port ...

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Номер записи: 84
06-07-2017 дата публикации

CATHETER WITH FLOW DIVERTER AND FORCE SENSOR

Номер: US20170189103A1
Автор: Beeckler Christopher Thomas, Ditter Tom Allen, Govari Assaf, HETTEL Rowan Olund
Принадлежит: Biosense Webster (Israel) Ltd.

A catheter probe comprises an insertion tube, and a distal end with a distal electrode, a force sensor to detect force on the distal electrode, and an irrigated electrode mounted on a coupling member of the force sensor, which has a tubular form surrounding a central space occupied by components, including force sensing coils. A fluid diverter that passes fluid to the proximal irrigated electrode is configured as an insert or an integrated projection of the coupling member, which configuration minimizes its space demand within the coupling member. Thus, the diameter of the distal end need not be increased. The fluid diverter has a proximal entry opening and a distal exit opening connected by a fluid passage with at least a radial branch and at least an axial branch. The irrigated electrode is mounted over the distal exit opening to receive fluid from the fluid passage. 1. A probe , comprising:an insertion tube;a distal electrode;a proximal electrode;a force sensor between the insertion tube and the distal electrode, the force sensor having a coupling member with a proximal portion with a central space and a proximal opening with a slot, the force sensor configured to measure a force on the distal electrode;a diverter positioned in the slot, the diverter having a proximal entry opening and a distal exit opening, the diverter having a fluid passage with a radial branch and an axial branch; anda first tubing extending from a proximal end of the insertion tube to the proximal entry opening of the diverter, the first tubing configured to supply irrigation fluid to the fluid passage,wherein the proximal electrode is mounted on the proximal portion of the force sensor, and is positioned over the distal exit opening.2. The probe of claim 1 , wherein the diverter is configured as an insert affixed in the slot.3. The probe of claim 1 , wherein the coupling member has a tubular form with a convex outer surface claim 1 , and the diverter has a convex outer surface.4. The probe ...

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Номер записи: 85
20-06-2019 дата публикации

Balloon Catheter with Bulbous Shaped Radiofrequency (RF) Ablation Electrodes

Номер: US20190183567A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A medical instrument includes a shaft, an inflatable balloon and a Radiofrequency (RF) ablation electrode. The shaft is configured for insertion into a body of a patient. The inflatable balloon is coupled to a distal end of the shaft. The RF ablation electrode is disposed on an external surface of the balloon and has a distal edge configured to reduce electric field angular gradients of an RF electric field emitted from the distal edge. 1. A medical instrument , comprising:a shaft for insertion into a body of a patient;an inflatable balloon coupled to a distal end of the shaft; anda Radiofrequency (RF) ablation electrode, which is disposed on an external surface of the balloon and which has a distal edge configured to reduce electric field angular gradients of an RF electric field emitted from the distal edge.2. The medical instrument according to claim 1 , wherein the electrode comprises:an elongate main section that progressively narrows towards the distal edge; anda distal-end section, which is connected to a distal-most end of the main section and is wider than the main section at the distal-most end.3. The medical instrument according to claim 1 , wherein the distal edge of the electrode has a bulbous shape having at least a given radius of curvature.4. The medical instrument according to claim 1 , wherein claim 1 , by reducing the electric field angular gradients claim 1 , the distal edge is configured to reduce charring deposits on the electrode.5. A method for manufacturing a medical instrument claim 1 , the method comprising:disposing, on an external surface of an inflatable balloon, a Radiofrequency (RF) ablation electrode having a distal edge configured to reduce electric field angular gradients of an RF electric field emitted from the distal edge; andcoupling the inflatable balloon to a shaft configured for insertion into a body of a patient.6. The method according to claim 5 , wherein the electrode comprises:an elongate main section that progressively ...

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Номер записи: 86
11-06-2020 дата публикации

Balloon Catheter with High Articulation

Номер: US20200179650A1
Автор: Beeckler Christopher Thomas, Herrera Kevin Justin, Keyes Joseph Thomas, Okarski Kevin Mark, Squires Alexander David
Принадлежит:

A medical probe includes a shaft, an expandable membrane and a probe maneuvering assembly (PMA). The shaft is configured for insertion into a cavity of an organ of a patient. The PMA is located inside the expandable membrane and includes a first elastic element, which is fitted along a longitudinal axis of the PMA and is configured to expand the membrane by shortening the PMA, and to collapse the membrane by elongating the PMA. The PMA further includes a second elastic element, which surrounds at least a portion of the first elastic element and is configured to deflect the membrane relative to the longitudinal axis. 1. A medical probe , comprising:a shaft for insertion into a cavity of an organ of a patient;an expandable membrane; and a first elastic element, which is fitted along a longitudinal axis of the PMA and is configured to expand the membrane by shortening the PMA, and to collapse the membrane by elongating the PMA; and', 'a second elastic element, which surrounds at least a portion of the first elastic element and is configured to deflect the membrane relative to the longitudinal axis., 'a probe maneuvering assembly (PMA), which is located inside the expandable membrane and comprises2. The medical probe according to claim 1 , wherein a length of the second elastic element is configured to determine a bending-location over the PMA.3. The medical probe according to claim 1 , and comprising a hollow tube claim 1 , which runs inside the shaft claim 1 , wherein a distal edge of the hollow tube is coupled to a distal end of the PMA claim 1 , for shortening or elongating the PMA.4. The medical probe according to claim 1 , and comprising one or more puller wires claim 1 , which are connected to the second elastic element for deflecting the membrane.5. The medical probe according to claim 4 , wherein the one or more puller wires each comprises a yarn.6. The medical probe according to claim 5 , wherein the yarn is made of Ultra High Molecular Weight Polyethylene ( ...

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Номер записи: 87
23-07-2015 дата публикации

Signal transmission using catheter braid wires

Номер: US20150201864A1
Автор: Assaf Govari, Christopher Thomas Beeckler
Принадлежит: Biosense Webster Israel Ltd

A probe includes an insertion tube, a magnetic field sensor, a dummy load mounted adjacent to the magnetic field sensor, and a braid. The braid includes multiple braid wires that traverse a length of the insertion tube. A first pair of the braid wires is connected across the magnetic field sensor, and a second pair of the braid wires is connected across the dummy load.

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Номер записи: 88
04-07-2019 дата публикации

BALLOON CATHETER WITH INTERNAL DISTAL END

Номер: US20190201669A1
Автор: Beeckler Christopher Thomas, Govari Assaf, Keyes Joseph Thomas
Принадлежит:

A catheter adapted to slidably receive a hollow shaft through its lumen. An expandable balloon is attached to the distal portion of the hollow shaft. A nose piece disposed at the front face of the balloon forms a connection between the balloon and the distal portion of the hollow shaft. When the balloon is expanded the nose piece does not protrude beyond the front face of the balloon. 1. A medical apparatus , comprising:a catheter having a lumen;a hollow shaft slidable through the lumen and having a proximal portion and a distal portion;an expandable balloon having a containment chamber and a front face; anda nose piece having a proximal extension, an orifice and a frontal plane disposed at the front face of the balloon and forming a connection between the balloon and the distal portion of the hollow shaft, wherein when the balloon is expanded the nose piece is non-protruding beyond the front face of the balloon.2. The apparatus according to claim 1 , wherein when the balloon is expanded the frontal plane of the nose piece is tangential to the front face.3. The apparatus according to claim 1 , wherein when the balloon is expanded claim 1 , the front face of the balloon forms an invagination and the nose piece is disposed in the invagination.4. The apparatus according to claim 1 , wherein the proximal extension of the nose piece embraces the distal portion of the hollow shaft within the containment chamber of the balloon.5. The apparatus according to claim 1 , further comprising a magnetic coil sensor attached to the proximal extension of the nose piece.6. The apparatus according to claim 1 , further comprising a guide wire insertable through the hollow shaft and the orifice of the nose piece.7. The apparatus according to claim 1 , further comprising a channel for introduction of fluid into the containment chamber to expand the balloon into a sphere.8. The apparatus according to claim 1 , wherein the proximal portion of the hollow shaft is attached to a control ...

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Номер записи: 89
02-07-2020 дата публикации

Mapping ECG Signals Using a Multipole Electrode Assembly

Номер: US20200205689A1
Автор: Beeckler Christopher Thomas, Squires Alexander David
Принадлежит:

A medical probe includes an insertion tube for insertion into a patient body, at least an arm, which is attached to a distal end of the insertion tube, at least a reference electrode coupled to the arm, and multiple electrodes, which are coupled to the arm, surround the reference electrode and are configured to sense electrical signals of body tissues that, when measured relatively to the reference electrode, are indicative of anatomical signals in the patient body. 1. A medical probe , comprising:an insertion tube for insertion into a patient body;at least an arm, which is attached to a distal end of the insertion tube;at least a reference electrode coupled to the arm and configured to contact internal tissues; andmultiple electrodes, which are coupled to the arm, surround the reference electrode such that the multiple electrodes sense anatomical signals which, when measured relatively to the reference electrode, are indicative of magnitude and direction of the anatomical signals in the patient body.2. The probe according to claim 1 , wherein the electrodes are arranged in a non-uniform geometry around the reference electrode.3. The probe according to claim 1 , wherein the anatomical signals comprise electrocardiogram (ECG) signals.4. The probe according to claim 1 , and comprising electrical conductors claim 1 , which are electrically connected to one or more of the electrodes and are configured to transmit the electrical signals to a system external to the patient body.5. The probe according to claim 1 , and comprising one or more wireless communication devices claim 1 , which are electrically connected to one or more of the electrodes and are configured to transmit the electrical signals to a system external to the patient body.6. The probe according to claim 1 , wherein the arm comprises a flexible printed circuit board (PCB).7. The probe according to claim 1 , wherein the electrical signals are indicative of a direction of the anatomical signals.8. The probe ...

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Номер записи: 90
02-07-2020 дата публикации

Flexible Nested Sensing Electrodes

Номер: US20200205737A1
Автор: Beeckler Christopher Thomas
Принадлежит:

Described embodiments include an apparatus, including an intrabody probe configured for insertion into a body of a subject, and at least one electrode unit coupled to a distal portion of the probe. The electrode unit includes a flexible electrically-insulative substrate, comprising an outer surface and an inner surface, and one or more pairs of electrically-conductive coatings that coat the outer surface and are configured to sense electrophysiological signals from tissue within the body of the subject, each of the pairs including an inner coating and an outer coating that surrounds the inner coating without contacting the inner coating. The electrode unit further includes respective traces that coat the inner surface and are configured to carry the signals sensed by the electrically-conductive coatings, and multiple electrically-conductive vias that pass through the substrate and connect the traces to the electrically-conductive coatings, respectively. Other embodiments are also described. 1. Apparatus , comprising:an intrabody probe, configured for insertion into a body of a subject; and a flexible electrically-insulative substrate, comprising an outer surface and an inner surface;', an inner coating; and', 'an outer coating that surrounds the inner coating without contacting the inner coating;, 'one or more pairs of electrically-conductive coatings that coat the outer surface and are configured to sense electrophysiological signals from tissue within the body of the subject, each of the pairs comprising, 'respective traces that coat the inner surface and are configured to carry the signals sensed by the electrically-conductive coatings; and', 'multiple electrically-conductive vias that pass through the substrate and connect the traces to the electrically-conductive coatings, respectively., 'at least one electrode unit coupled to a distal portion of the probe, the electrode unit comprising2. An electrode unit comprising:a flexible substrate; andat least one ...

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Номер записи: 91
02-07-2020 дата публикации

Catheter Electrode with Improved Lateral Heat Transfer in Adhesive Layer

Номер: US20200205888A1
Автор: Beeckler Christopher Thomas, Okarski Kevin Mark
Принадлежит:

An ablation electrode in a medical device includes first and second layers, and an adhesive layer. The adhesive layer, which is placed between the first and second layers, includes a mesh, which is made of a thermally conductive material defining voids in the mesh, and an adhesive that is configured to fill the voids of the mesh. 1. An ablation electrode in a medical device , the electrode comprising:first and second layers; and a mesh comprising a thermally conductive material defining voids in the mesh; and', 'an adhesive that is configured to fill the voids of the mesh., 'an adhesive layer placed between the first and second layers, the adhesive layer comprising2. The ablation electrode according to claim 1 , wherein the mesh is configured to conduct heat along the ablation electrode claim 1 , laterally along the adhesive layer.3. The ablation electrode according to claim 1 , wherein the material of the mesh comprises graphite.4. The ablation electrode according to claim 1 , wherein the adhesive layer is predisposed over the mesh.5. The ablation electrode according to claim 1 , wherein the first and second layers are curved.6. The ablation electrode according to claim 1 , wherein the mesh comprises a square grid geometry.7. The ablation electrode according to claim 1 , wherein the mesh comprises a concentric grid geometry.8. The ablation electrode according to claim 1 , wherein the adhesive is configured to fill the voids of the mesh while the adhesive is being cured.9. A method for manufacturing an ablation electrode in a medical device claim 1 , the method comprising:providing a first layer and a second layer to be adhered to one another; and a mesh comprising a thermally conductive material defining voids in the mesh; and', 'an adhesive that is configured to fill the voids of the mesh., 'adhering the first layer and the second layer using a heat conductive adhesive layer comprising10. The manufacturing method according to claim 9 , wherein the mesh is ...

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Номер записи: 92
02-07-2020 дата публикации

Balloon Catheter with Distal End Having a Recessed Shape

Номер: US20200205889A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A characterization system includes an inflatable balloon for insertion into a patient organ and one or more electrodes disposed on the balloon. When the balloon is in an inflated position, a distal end of the balloon has a recessed shape that orients respective regions of the electrodes perpendicularly to a longitudinal axis of the balloon. 1. A catheterization system , comprising:an inflatable balloon for insertion into a patient organ; andone or more electrodes disposed on the balloon,wherein, when the balloon is in an inflated position, a distal end of the balloon has a recessed shape that orients respective regions of the electrodes perpendicularly to a longitudinal axis of the balloon.2. The catheterization system according to claim 1 , and comprising a power generator claim 1 , which is configured to supply electrical power to each of the one or more electrodes.3. The catheterization system according to claim 2 , wherein the electrodes comprise at least a first electrode and a second electrode claim 2 , and wherein the power generator is configured to apply a first power level to the first electrode and a second different power level to the second electrode.4. The catheterization system according to claim 2 , and comprising a processor claim 2 , which is configured to control power levels that the power generator respectively supplies to the one or more electrodes.5. The catheterization system according to claim 1 , wherein claim 1 , when the distal end of the balloon makes physical contact with the organ claim 1 , the respective regions of the electrodes claim 1 , which are perpendicular to the longitudinal axis of the balloon claim 1 , are configured to apply frontal ablation to a wall of the patient organ.6. The catheterization system according to claim 1 , wherein claim 1 , in the inflated position claim 1 , the electrodes have additional regions oriented not perpendicularly to the longitudinal axis claim 1 , and wherein the additional regions of the ...

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Номер записи: 93
02-07-2020 дата публикации

Medical Device Shaft with Reduced Whipping

Номер: US20200206464A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas, Wilczynski Maribeth Esguerra
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A medical probe, including a flexible insertion tube having a proximal segment and a deflectable distal segment, and containing first and second lumens running longitudinally through the insertion tube, wherein the first and second lumens are twisted around each other in the proximal segment, and run parallel to each other in the deflectable distal segment. The medical probe also includes first and second wires running respectively through the first and second lumens and having respective first and second distal ends, which are anchored within the deflectable distal segment of the insertion tube. 1. A medical probe , comprising:a flexible insertion tube comprising a proximal segment and a deflectable distal segment, and containing first and second lumens running longitudinally through the insertion tube, wherein the first and second lumens are twisted around each other in the proximal segment, and run parallel to each other in the deflectable distal segment; andfirst and second wires running respectively through the first and second lumens and comprising respective first and second distal ends, which are anchored within the deflectable distal segment of the insertion tube.2. The medical probe according to claim 1 , and comprising first and second compression coils that respectively contain the first and the second wires claim 1 , and respectively comprise the first and the second lumens.3. The medical probe according to claim 2 , and comprising first and second tubular structures that respectively contain the first and the second compression coils.4. The medical probe according to claim 1 , and comprising a third lumen running longitudinally through the insertion tube claim 1 , wherein the first lumen claim 1 , the second lumen and the third lumen are twisted around each other in the proximal segment.5. The medical probe according to claim 4 , and comprising one or more functional elements running through the third lumen claim 4 , wherein a given functional element ...

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Номер записи: 94
02-07-2020 дата публикации

Ear-Nose-Throat (ENT) Hollow Guidewire with Balloon

Номер: US20200206473A1
Автор: Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

A medical probe includes a hollow guidewire, a balloon, and a magnetic position sensor. The hollow guidewire is configured for insertion into a channel of an organ of a patient. The balloon is fixed to a distal end of the hollow guidewire, is configured to be inserted into the channel using the hollow guidewire, and is further configured to be inflated by pumping of fluid through the hollow guidewire. The magnetic position sensor is fitted at the distal end of the hollow guidewire. 1. A medical probe , comprising:a hollow guidewire for insertion into a channel of an organ of a patient;a balloon fixed to a distal end of the hollow guidewire, wherein the balloon is configured to be inserted into the channel using the hollow guidewire and is further configured to be inflated by pumping of fluid through the hollow guidewire; anda magnetic position sensor fitted at the distal end of the hollow guidewire.2. The medical probe according to claim 1 , wherein the hollow guidewire comprises a coil-reinforced polyimide polymer tube.3. The medical probe according to claim 1 , wherein the hollow guidewire comprises a braid-reinforced polymer tube.4. The medical probe according to claim 1 , wherein a distal edge of the hollow guidewire protrudes beyond the balloon.5. The medical probe according to claim 1 , wherein the magnetic position sensor is formed on a flexible printed-circuit-board wrapped around the distal end of the hollow guidewire.6. A manufacturing method claim 1 , comprising:providing a hollow guidewire for insertion into a channel of an organ of a patient;attaching a balloon to a distal end of the hollow guidewire so that the hollow guidewire protrudes beyond the balloon; andfitting a magnetic position sensor at the distal end of the hollow guidewire.7. The manufacturing method according to claim 6 , wherein providing the hollow guidewire comprises providing a coil-reinforced polymer tube.8. The manufacturing method according to claim 6 , wherein providing the hollow ...

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Номер записи: 95
16-10-2014 дата публикации

HIGH DENSITY ELECTRODE STRUCTURE

Номер: US20140309512A1
Автор: Beeckler Christopher Thomas, Govari Assaf, HETTEL Rowan Olund
Принадлежит: BIOSENSE WEBSTER (ISRAEL), LTD.

Electrode cabling, including a core and n wires coiled on the core in an arrangement topologically equivalent to an n-start thread configuration, wherein n is an integer greater than one. The cabling also includes a sheath covering the n wires and an electrode attached through the sheath to a given wire selected from the n wires. 1. Electrode cabling , comprising:a core;n wires coiled on the core in an arrangement topologically equivalent to an n-start thread configuration, wherein n is an integer greater than one;a sheath covering the n wires; andan electrode attached through the sheath to a given wire selected from the n wires.2. The cabling according to claim 1 , wherein the n wires comprise n respective conductors having n respective insulating layers.3. The cabling according to claim 1 , and comprising up to (n−1) further electrodes attached through the sheath to up to (n−1) respective wires other than the given wire.4. The cabling according to claim 1 , wherein at least one of the n wires is configured to act as an index wire for the n wires.5. The cabling according to claim 4 , wherein the index wire is visually different in appearance from the n wires not including the index wire.6. The cabling according to claim 1 , wherein the sheath is transparent.7. The cabling according to claim 1 , wherein the electrode is attached to the given wire at a distal end of the cabling claim 1 , and comprising a connector attached at a proximal end of the cabling to the given wire.8. The cabling according to claim 1 , wherein the cabling is configured for use as a medical catheter.9. The cabling according to claim 1 , wherein the core is cylindrical claim 1 , and wherein the n wires are coiled on the core in the n-start thread configuration.10. The cabling according to claim 1 , wherein the core encloses a shape element.11. The cabling according to claim 1 , and comprising n filaments coiled on the core and configured to respectively separate the n wires.12. The cabling ...

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Номер записи: 96
11-08-2016 дата публикации

BASKET CATHETER WITH MICROELECTRODE ARRAY DISTAL TIP

Номер: US20160228062A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf, HETTEL Rowan Olund
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. 1. A catheter comprising:an elongated catheter body having proximal and distal ends and at least one lumen therethrough;a basket electrode assembly at the distal end of the catheter body, the basket electrode assembly having proximal and distal ends and comprising a plurality of spines, the spines comprising a plurality of electrodes, the distal end comprising a substrate body, and a plurality of recessed microelectrodes, the substrate body has an outer surface and outer surfaces of the recessed microelectrodes are flush with the outer surface of the substrate body.2. The catheter of claim 1 , wherein the substrate body has a radial outer surface claim 1 , and at least one radial microelectrode has an outer surface flush with the radial outer surface.3. The catheter of claim 2 , wherein the radial outer surface of the substrate body and the outer surface of the at least one radial microelectrode has a common curvature in at least one direction.4. The catheter of claim 1 , wherein the substrate body has a distal end outer surface claim 1 , and at least one distal microelectrode has an outer surface flush with the distal end outer surface.5. The catheter of claim 4 , wherein the distal end outer surface of the substrate body and the outer surface of the at least one distal microelectrode has a common curvature in at least one direction.6. ...

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Номер записи: 97
09-08-2018 дата публикации

TEMPERATURE MEASUREMENT IN CATHETER

Номер: US20180221088A1
Автор: Altmann Andres Claudio, Beeckler Christopher Thomas, Govari Assaf
Принадлежит:

Ablation of cardiac tissue is carried out by inserting a probe having an ablation electrode and a plurality of microelectrodes into a body of a living subject to establish contact between two of the microelectrodes and target tissue, and energizing the ablation electrode. While the ablation electrode is energized impedances are measured between the microelectrodes, and the power level of the ablation electrode adjusted according to the impedances. 1. A method of ablation , comprising the steps of:inserting a probe into a body of a living subject, the probe having a tip, an ablation electrode and a plurality of microelectrodes;establishing a contacting relationship between two of the microelectrodes and a target tissue;energizing the ablation electrode at a power level;while the ablation electrode is energized, measuring impedances of the microelectrodes and determining a pair of the microelectrodes having a highest and second highest impedance for determining a bipolar impedance between the pair of the microelectrodes; andresponsively to the bipolar impedance, adjusting the power level of the ablation electrode.2. The method according to claim 1 , further comprising the steps of:iteratively performing the step of measuring an impedance; andestimating a tissue temperature from a change between a first performance and a second performance of measuring an impedance.3. The method according to claim 2 , further comprising the steps of:making a determination that the tissue temperature exceeds a predetermined limit; andresponsively to the determination reducing the power of the ablation electrode.4. The method according to claim 3 , wherein reducing the power comprises deactivating the ablation electrode by reducing the power to zero.5. The method according to claim 1 , wherein measuring an impedance comprises polling the microelectrodes to determine pairwise impedances therebetween.6. The method according to claim 1 , wherein establishing a contacting relationship ...

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Номер записи: 98
09-07-2020 дата публикации

EXTRUSION WITH PREFERENTIAL BEND AXIS

Номер: US20200215302A1
Автор: Beeckler Christopher Thomas, Keyes Joseph Thomas
Принадлежит:

A catheter is made by coextruding first and second molten polymers, wherein the second molten polymer forms a flexible inner core and the first molten polymer forms exactly two bands on opposite sides of the inner core. The inner core is braided, and a third molten polymer extruded onto the braid to form a flexible jacket that encloses the braid, the bands and the inner core. The bands are more rigid than the inner core, and they provide preferential in-plane bending. 1. A method , comprising the steps of:coextruding a first molten polymer mixture comprising a first polymer with a second molten polymer mixture comprising a second polymer, in which the second molten polymer mixture forms a flexible inner core and the first molten polymer mixture forms exactly two bands inserted partially inside of and on opposite sides of the inner core, the bands being more rigid than the inner core;overlaying a braid on the inner core and the bands;coextruding a third molten polymer mixture comprising a third polymer onto the braid to form a jacket that encloses the braid, the bands and the inner core; andwhile performing the step of coextruding the third molten polymer mixture, changing a first composition of the third molten polymer mixture to a second composition of the third molten polymer mixture to define a proximal segment and a distal segment of a shaft and a transitional segment therebetween, the proximal segment being more rigid than the distal segment.2. The method according to claim 1 , in which in the proximal segment the braid has a first configuration claim 1 , in the distal segment the braid has a second configuration and in the transitional segment the braid transitions between the first configuration and the second configuration claim 1 , in which the first configuration offers more resistance to flexion of the shaft than the second configuration.3. The method according to claim 1 , in which the third molten polymer mixture comprises polyether block amide and ...

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Номер записи: 99
25-07-2019 дата публикации

CATHETER WITH COAXIAL THERMOCOUPLE

Номер: US20190223952A1
Автор: Beeckler Christopher Thomas
Принадлежит:

An improved thermocouple includes a drawn coaxial thermocouple wire pair having a more precise “hot” junction at which a first and second metallic material electrically connect with each other for measuring temperature. Adapted for use with an electrophysiologic catheter, the improved thermocouple comprising an elongated body having a proximal end and a distal end. The body includes a core of a first metallic material, a first coaxial layer of ceramic material, and a second coaxial layer of a second metallic material. The thermocouple further includes a solder cap on the distal end, the solder cap electrically connecting the core and the second layer at the distal end. A method of manufacturing includes drawing the body through a die, and applying solder on a distal end of the body to electrically connect the two metallic materials at the distal end. 2. The temperature sensing tensile member of claim 1 , wherein the core includes constantan and the second layer includes copper.3. The temperature sensing tensile member of claim 1 , wherein the core includes copper and the second layer includes constantan.4. The temperature sensing tensile member of claim 1 , wherein the ceramic material is in a powder form.5. The temperature sensing tensile member of claim 1 , further comprising an outer protective sheath.6. The temperature sensing tensile member of claim 5 , wherein the outer protective sheath is electrically nonconductive.7. The temperature sensing tensile member of claim 1 , wherein the first coaxial layer of ceramic material is in a solid form when the elongate body is first assembled claim 1 , and in a powered form when the temperature sensing tensile member is first assembled.8. A medical device comprising:an elongated catheter body;a distal electrode member attached to the catheter body and having a proximal end and a distal end, with a blind hole of a known depth in the proximal end;a temperature sensor having a tensile body, the tensile body extending ...

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Номер записи: 100