ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ХВОСТОВИКОМ

Изобретение относится к медицине. В электрохирургическом инструменте предусмотрен рабочий орган, для действия которого необходимо предпочтительно два тянущих/толкающих элемента и сдвигающий элемент. Сдвигающий элемент удерживается между тянущим/толкающим элементом и упором. Упор выполнен в виде другого тянущего/толкающего элемента. Сдвигающий элемент может быть активирован только тогда, когда тянущий/толкающий элемент туго натянут. Направление сдвигающего элемента на тянущем/толкающем элементе делает возможным простую компоновку инструментов с длинными хвостовиками, причем отсутствует необходимость в мерах для бокового усиления жесткости. 15 з.п. ф-лы, 9 ил.

ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ

... 1. Электрохирургический инструмент с браншей (16), которая имеет ограниченную граничным контуром (22) электродную пластину (19) и также ограниченный граничным контуром (23) электрододержатель (20), которые расположены друг относительно друга с ограничением щели (24), причем горловина (25) щели (24) простирается между граничными контурами (22, 23), и причем электродная пластина (19) и электрододержатель (20) непрерывно монолитно соединены друг с другом посредством нескольких перемычек (21).2. Инструмент по п. 1, отличающийся тем, что перемычки (21) расположены на расстоянии от горловины (25) щели (24).3. Инструмент по п. 1, отличающийся тем, что расстояние от перемычек (21) до граничного контура (23) электрододержателя (20) больше, чем ширина (W) горловины (25) щели (24).4. Инструмент по п. 2, отличающийся тем, что расстояние перемычек (21) от граничного контура (23) электрододержателя (20) больше, чем ширина (W) горловины (25) щели (24).5. Инструмент по п. 1, отличающийся тем, что перемычки ...

ШАРНИРНО ПОВОРАЧИВАЕМЫЕ ХИРУРГИЧЕСКИЕ ИНСТРУМЕНТЫ С ПРОВОДЯЩИМИ ПУТЯМИ ДЛЯ ПЕРЕДАЧИ СИГНАЛОВ

ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ

Изобретение относится к медицине, а именно к хирургическому инструменту для электрохирургического монополярного или биполярного приложения тока к биологической ткани, прежде всего к соединяющему инструменту. Электрохирургический инструмент с браншей имеет электродную пластину с граничным контуром и электрододержатель с граничным контуром. Между электродной пластиной и электрододержателем имеется щель, причем горловина щели расположена между граничными контурами, а электродная пластина и электрододержатель монолитно соединены друг с другом посредством перемычек. Изобретение обеспечивает улучшенный хирургический инструмент с улучшенной браншей для открыто-хирургического, лапараскопичсеского и эндоскопического использования. 20 з.п. ф-лы, 12 ил.

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ

... 1. Электрохирургический инструмент, имеющий проксимальный конец и дистальный конец, содержащий:- узел браншей на дистальном конце, включающий в себя первую браншу и вторую браншу, подвижную относительно нее, при этом бранши могут перемещаться одна относительно другой из открытого положения в положение захвата, причем в упомянутом положении захвата бранши выполнены с возможностью быть расположенными ближе одна к другой, чем в открытом положении, причем каждая бранша содержит по меньшей мере один электрод, выполненный с возможностью соединения с источником электропитания, и электроды обеих браншей выполнены с возможностью взаимодействия для заваривания ткани тела, удерживаемой между браншами в положении захвата;- приводное средство для перемещения браншей из открытого положения в положение захвата; и- средство для ограничения ширины смыкания браншей, когда их перемещают из открытого положения в положение захвата,отличающийся тем, что упомянутое средство содержит множество ограничительных ...

ХИРУРГИЧЕСКАЯ СИСТЕМА ДЛЯ СОЕДИНЕНИЯ ТКАНИ ТЕЛА И СПОСОБ УПРАВЛЕНИЯ УКАЗАННОЙ ХИРУРГИЧЕСКОЙ СИСТЕМОЙ

... 1. Хирургическая система (10) для соединения и/или рассечения ткани тела с помощью хирургического инструмента (12), имеющего две бранши (16, 18) инструмента, каждая из которых снабжена, по меньшей мере, одним ВЧ электродом, носителем которых служит держатель бранши, предпочтительно рукоятка инструмента для открывания и закрывания браншей (16, 18) инструмента, и режущий элемент (22), носителем которого одновременно служит держатель бранши, предпочтительно рукоятка инструмента, отдельно от браншей (16, 18) инструмента, в которой хирургический инструмент (12) оборудован удерживающим средством (34) в форме блокировочного механизма режущего элемента, который в неактивированном или нерабочем состоянии механически полностью блокирует движение резания режущего элемента (22) и может быть активно переведен в разблокированное состояние, чтобы позволить движение резания, и в которой активное разблокирование удерживающего средства (34) возможно только тогда, когда заранее заданный цикл соединения ткани ...

ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕМЕНТОМ БРАНШИ

... 1. Хирургический инструмент для подачи энергии к ткани, содержащий:рукоятку, содержащую:спусковой механизм иэлектрический вход;стержень, отходящий от рукоятки, причем стержень содержит провод, а спусковой механизм выполнен с возможностью избирательной активации для электрического соединения электрического входа и провода; иконцевой эффектор, образующий продольную ось и плоскость рассечения, содержащий:первый элемент бранши;второй элемент бранши, причем, по меньшей мере, один из первого элемента бранши и второго элемента бранши выполнен с возможностью перемещения относительно другого из первого элемента бранши и второго элемента бранши для захвата и удержания ткани между первым элементом бранши и вторым элементом бранши;электрод, электрически соединенный с проводом; ипервую и вторую взаимодействующие с тканью поверхности, соединенные с одним из первого и второго элементов бранши и проходящие вдоль продольной оси, причем каждая из первой и второй взаимодействующих с тканью поверхностей имеет ...

Электрохирургический инструмент

Chirurgisches System zum Verbinden von Körpergewebe

Chirurgisches System (10) zum Verbinden von Körpergewebe, umfassend ein chirurgisches Instrument (12; 120) mit zwei relativ zueinander bewegbaren Werkzeugelementen (14, 16; 138, 140), welche jeweils eine HF-Elektrode (28, 29; 142, 144) umfassen, die in einer Annäherungsstellung der Werkzeugelemente (14, 16; 138, 140) einen minimalen Abstand (58) voneinander definieren, einander gegenüberliegen und aufeinander zu weisen, dadurch gekennzeichnet, dass mindestens eine der HF-Elektroden in mindestens zwei Elektrodensegmente (30, 31; 150, 151) unterteilt ist und dass die mindestens zwei Elektrodensegmente (30, 31; 150, 151) gegeneinander elektrisch isoliert sind.

Elektrochirurgische Vorrichtung

Ausführungsformen der vorliegenden Erfindung stellen ein verbessertes chirurgisches Instrument mit mehreren Verbesserungen und Vorteilen gegenüber dem Stand der Technik bereit. Das chirurgische Instrument weist einen Endeffektor auf, der in der Lage ist, verschiedene Vorgänge auszuführen, einschließlich das Erfassen, Schneiden und Versiegeln und/oder Koagulieren von Gewebe, wobei einer der Vorgänge durch einen Griff gesteuert wird, der relativ zu dem Instrument bewegbar ist, um den Endeffektor zwischen zwei Zuständen zu bewegen. Die vorliegende Erfindung stellt einen vereinfachten Einrastmechanismus für diesen bewegbaren Griff bereit. Konkret besteht der Einrastmechanismus aus einer einzelnen einstückig ausgebildeten Komponente, die angeordnet ist, um mit dem Griff in Eingriff zu gelangen, so dass der Endeffektor in einem Zustand gehalten wird, wodurch der Benutzer eine Hand frei hat, um andere Funktionen des Instruments auszuführen. Bei der Anwendung kann ein Benutzer also das chirurgische ...

Chirurgisches Instrument

Um ein chirurgisches Instrument zum Verbinden von Körpergewebe mit einem Schaft und einem ersten und einem zweiten Werkzeugelement, welche Werkzeugelemente relativ zueinander bewegbar angeordnet oder ausgebildet sind und jeweils eine Elektrode umfassen, welche Elektroden in einer Annäherungsstellung der Werkzeugelemente einen minimalen Abstand voneinander definieren, einander gegenüberliegen und aufeinander zu weisen, wobei das erste Werkzeugelement am distalen Ende des Schafts angeordnet oder ausgebildet ist, so zu verbessern, dass eine mechanische Belastung von insbesondere mittels eines Stromflusses erzeugten Körpergewebeteilverbindungen beim Entfernen des chirurgischen Instruments minimiert wird, wird vorgeschlagen, dass das zweite Werkzeugelement von einer Betriebsstellung, in welcher es in die Annäherungsstellung bringbar ist, in eine Entfernungsstellung bringbar ist, in welcher Entfernungsstellung eine von der Elektrode des zweiten Werkzeugelements definierte Rückzugsumfangslinie ...

Elektrochirurgisches Instrument

Die Erfindung betrifft ein elektrochirurgisches Instrument, das zwei gelenkig miteinander verbundene Branchen umfasst, die zum Öffnen oder Schließen entsprechend einem Klemm-, Spreiz- oder Schneidwerkzeug betätigbar sind. Das Instrument umfasst ferner Elektrodenteile an distalen Enden der Branchen zum Fassen von Gewebe und zum Durchleiten eines Koagulationsstromes durch das Gewebe zu dessen Koagulation, die elektrisch voneinander isoliert sind, sowie Stromzuführungseinrichtungen zum Zuführen des Koagulationsstromes zu den Elektrodenteilen. Dieses elektrochirurgische Instrument ist dahingehend weitergebildet, dass eine insbesondere mehrere Verfahrensgänge benötigende Operation auf einfachste Art und mit optimiertem Ablauf durchführbar ist. Dazu ist an dem Instrument mindestens an einem Elektrodenteil ein als Schneidelektrode ausgelegter Schneidabschnitt ausgebildet, so dass das Elektrodenteil den Schneidabschnitt und einen Koagultationsabschnitt aufweist. Zudem ist eine Steuerungseinheit ...

BEWEGUNGSNACHWEISGERÄT ZUR KONTROLLE DES ELEKTROCHIRURGISCHEN AUSGANGS

Electrosurgical instrument

An electrosurgical instrument comprising an end effector. The end-effector comprises a pair of opposing first and second jaws, the first jaw having a first sealing surface on which is mounted a first sealing electrode; and the second jaw having a second sealing surface upon which is located a second sealing electrode. The jaws are movable between open and closed positions, where the jaws cooperate to grasp tissue for sealing by passing electrode current. One or more electrically conductive stops are disposed on one-or-both sealing surfaces; the one-or-more conductive stops maintain a predetermined gap between the electrodes when the jaws are closed. With the jaws closed, one or more insulating members prevent the one-or-more conductive stops from creating a short circuit between the electrodes. The one-or-more conductive-stops may be located beside the first electrode and may be located on one-or-more elongate strips running along the first sealing surface. The one-or-more elongate strips ...

Electrosurgical instrument end effector and system

Apparatus and method for occluding a vessel

Bipolar surgical instruments

Energy delivery device for endovascular occlusion

An energy delivery guide wire 10 comprises a guide wire proximal portion 12, a guide wire distal portion 14 and an energy delivery tip 16 extending fromthe distal portion. The energy delivery tip has a proximal tip end 18 and a distal tip end 20. The guide wire distal portion 14 extends in a first direction in an unbiased condition and the energy delivery tip 16 extends in a second direction different from the first direction and is preferably curved. The distal tip end 20 is accordingly offset relative to the first direction bybetween 10 to 50% of the tip length. The energy delivery tip is preferably an electrode capable of heating tissue to cause ablation and thereby occlusion of blood vessels. The electrode may be formed with an electrically conductive core and an external conductive wire coil. The curvature of the guide wire is configured to contact a vessel wall 15 at a first contact point 26 at the proximal tip of the energy delivery tip and a second contact point 28 at the distal ...

End effector for electrosurgical instrument

Bipolar surgical instruments

A bipolar surgical instrument 1 comprises a body 2 and first and second opposed jaws located at the distal end of a shaft, movable between an open position in which the first and second jaws are spaced apart from one another, and a closed position. An actuation grip 8 is movably mounted on the body 2, is arranged to operate an actuation shaft, and is biased towards the open position by an actuation grip return force. An actuation assistor 60 is located in the body 2 of the instrument 1 and comprises an aperture 84 and a resiliently biased portion to engage the aperture 84 when the jaws are closed. This is arranged to hold the actuation grip 8 in the closed position with a predetermined force greater than zero and less than the actuation grip return force.

Electrosurgical apparatus and electrosurgical device

An electrical surgical instrument has RF electrodes and a gas conduit so that a plasma can be formed at a distal tip where a retractable surgical snare 338 is arranged such that the thermal plasma may be directed to biological tissue encircled by the snare. The RF is delivered to the tip electrodes via a coaxial cable 302 in the body of the instrument. The RF may include microwave frequencies and the probe may be fed from separate RF and microwave sources (204 206 figure 2). The snare may be cold snare (fig 3) and formed from an electrically insulating material. The snare alternatively may be electrically active (fig 4) and connected to receive RF energy to be radiated into the area encircled by the snare. The instrument can be used in different modes and configurations (see figures 3 and 4) : (i) a plasma to perform surface coagulation, (ii) a non-ionising microwave field (in the absence of plasma) to perform coagulation at a deeper level, and (iii) an RF field to assist with cutting.

Microwave amplification apparatus for an electrosurgical instrument

A microwave amplification apparatus 300 for an electrosurgical instrument, apparatus 300 comprising: a cable assembly 306 whose proximal end is connected a launch portion 302 that includes a DC source 316 and a microwave source 314 to respectively launch a DC signal and a microwave signal 310 along the cable assembly 306; and connected to a distal end of the cable assembly 306, a distal amplification portion 304 comprising a power amplifier 320 receiving the microwave signal to be amplified, where the amplification portion 304 applies the DC signal as a drain voltage VDD across the power amplifier 320. Power amplifier 320 has an output to deliver an amplified microwave signal 318 into biological tissue via a structure 308. Preferably, amplification apparatus 300 comprises a gate voltage extraction module 332 to extract a bias voltage VGG from the DC signal to apply to a gate of the power amplifier 320. Gate-voltage extraction-module 332 may comprise a DC-DC buck converter. Gate-voltage ...

Electrosurgical system

An electrosurgical system comprising a generator and an instrument, where the instrument comprises: a hand piece with a handle 22 that moves between a first and second position relative to the hand piece; first and second jaws that move from first to second conditions in response to movement of the handle 22; a latch mechanism to maintain a predetermined closure force between the jaws in their second position; where the system further comprises first and second energy actuation switches 26,4603, each being able to switch energy to the jaws, where the first switch 26 is enabled for user actuation whilst the second switch 4603 is inhibited from actuation and visa-versa depending upon whether the latch mechanism is engaged. First switch 26 may be located upon the instrument and second switch 4302 may by automatically actuated when handle 26 is moved to produce the predetermined jaw closure force. There may be a latch over-ride mechanism, which when actuated disables the latch mechanism, where ...

Bipolar surgical instruments

A bipolar surgical instrument comprising a pair of jaws 44, each provided with a blade track 100 which has at least one portion of increased width. The tracks preferably vary in width along their length, with the proximal 102 and distal portions 106 of the tracks preferably enlarged with respect to the central portion 104 to prevent jamming of the blade due to misalignment of the blade and jaws during use. The instrument additionally comprises a body (4, Fig 1) and an elongate shaft (10, Fig 1) connecting the jaws to the body. An actuation grip or handle (8, Fig 1) is further moveably mounted on the body, movement of which causes movement of an actuation shaft (52, Fig 8) which extends along the elongate shaft, resulting in the opening and closing of the jaws to which the actuation shaft is also connected. The blade also extends along the shaft. The jaws may additionally be curved.

Cutting blades for bipolar surgical instruments

A substantially planar elongate cutting blade 70 for a bipolar surgical instrument (1, figure 1). The cutting blade has first 82 and second 84 opposed edges and defining a longitudinal axis, and comprises a proximal end region 86 which extends between the first and second edges over a first distance in a direction perpendicular to the longitudinal axis, and a distal end region 88 defining a cutting surface 90 which extends between the first and second edges over a second distance in a distance perpendicular to the longitudinal axis. The first distance being greater than the second distance. The first and second edges have respective portions that extend at first and second acute angles respectively with respect to the longitudinal axis and the cutting surface extends transversely at a third angle with respect to the longitudinal axis. The third angle being not equal to the first or second angle. The cutting blade may comprise an elongated slot extending between proximal and distal end regions ...

Electronsurgical instrument

Drive shaft for a surgical instrument

Electrosurgical instrument

Cosmetic surgery apparatus and method

Pressure relief vent for surgical sealing devices

A jawed end effector for an electrosurgical RF coagulating instrument, comprising upper 20 and lower 22 jaws with respective tissue sealing electrodes 26a-d to seal a vessel 24 clamped between them. One or more jaw of the end effector comprises a blood vessel pressure relief 30a-d means positioned within such that when a blood vessel being sealed expands beyond a certain size it will relieve expansionary pressure from the vessel that would otherwise affect the efficacy of the sealing. The pressure relief means may prevent the jaws becoming unclamped, the vessel bursting uncontrollably or the formation of a defective seal. The pressure relief means may be hollow or solid and it may deploy from within a wall of the jaws. The end effector may comprise a venting channel to the exterior of the end effector. An electrosurgical instrument and system comprising such an end effector.

Blood vessel pressure relief for electro-surgical sealing devices

ELECTRICALSURGICAL INSTRUMENT

ELECTRICALSURGICAL INSTRUMENT AND OPERATING TECHNIQUE

Electrothermal device for coagulating, sealing and cutting tissue during surgery

Electrosurgical resector tool

An electrosurgical resector tool having an energy delivery structure that provides a plurality of operational modalities that facilitate biological tissue cutting and sealing using radiofrequency (RF) electromagnetic energy and/or microwave EM energy. The tool comprises a static first blade element, and a pivotable second blade element that has a length commensurate with the first blade element whereby, in a closed position, it lies adjacent to a laterally facing surface of the first blade element. The blade elements constitute an energy delivery mechanisms that is compact enough to enable the tool to be insertable through an instrument channel of a surgical scoping device, such as an endoscope, gastroscope or bronchoscope.

Matter manipulator with conductive coating

Abstract A device including a tissue manipulator, a conductive coating and at least one connector area. For example, the tissue manipulator may be scissors, clip appliers or clips, staplers and staple of a vessel sealing device. The conductive coating may be applied to the clip, staple or jaws of the scissors or sealing device. Electrical energy can be supplied through areas of contact (connect - or areas) - such as between an anvil and a pusher of the stapler and the conductive coating on the staple. The conductive coating can be energized along with mechanical application of the manipulator to transform and facilitate attachment of tissue layers.

Forceps drive shaft

Surgical forceps can include a drive pin an outer tube, a first jaw, a second jaw, and an inner tube. The outer tube can define a longitudinal axis. The first jaw can be pivotably connected to the outer tube. The first jaw can include a pair of flanges located at a proximal portion of the first jaw, where each flange can include a track receiving the drive pin. The inner tube can be located within the outer tube and can extend along the longitudinal axis. The inner tube can include a pair of arms extending from a distal portion of the inner tube. The drive pin can be securable to the pair of arms. The inner tube can be translatable within the outer tube to drive the drive pin along the tracks to move the second jaw between open and closed positions.

Forceps motion transfer assembly

Forceps including a frame and a motion transfer assembly to transfer forces from or more actuators to an end effector. The motion transfer assembly can include a body having a passageway, a drive shaft extending through the passageway, and a drive link. The body and the drive shaft slidable with respect to the frame, and the body rotationally fixed to the drive shaft to transfer a rotational input received from a first actuator into a rotational motion of the drive shaft relative to the frame. The drive link operably coupled to the frame and the body to transfer a force received from a second actuator into a linear motion of the body and the drive shaft relative to the frame.

Motion detector for controlling electrosurgical output

Methods and apparatus for treatment of patent foramen ovale

Energy based devices and methods for treatment of patent foramen ovale

System and method for measuring initial tissue impedance

SYSTEM AND METHOD FOR MEASURING INITIAL TISSUE Abstract An electrosurgical system and method are disclosed. The system includes an s electrosurgical generator (20) adapted to supply electrosurgical energy to tissue. The generator (20) is further adapted to supply an electrical signal having at least one substantially constant value to tissue to determine initial tissue impedance response. The generator (20) includes sensor circuitry adapted to continuously monitor initial tissue impedance response, wherein the initial tissue impedance response includes one of an /o initial impedance, an impedance drop, an impedance minimum and a first impedance rise. The generator (20) also includes a microprocessor (25) adapted to generate at least one tissue parameter based as a function of the initial impedance, the impedance drop, the impedance minimum and the first impedance rise. The system also includes an electrosurgical instrument (10) including at least one active electrode (24) adapted to /5 ...

System and method for tissue sealing

Vessel sealer and divider for large tissue structures

Electrocautery method and apparatus

Electrosurgical apparatus with tissue site sensing and feedback control

ELECTROSURGICAL APPARATUS WITH TISSUE SITE SENSING AND FEEDBACK CONTROL An electrosurgical system (105) and method for transmitting, monitoring, and controlling electrosurgical energy and tissue parameter quality at the tissue site. The electrosurgical system (105) includes a generator (200) adapted to generate electrosurgical energy for treating tissue. The generator (200) includes one or more active output terminals (230) which supply energy to the tissue. The active output terminals (230) are operatively connected to one or more active leads (18). The generator (200) also includes one or more return output terminal (232) which returns energy from the tissue. The return output terminals (232) are operatively connected to at least one return lead (19). The system (105) also includes an electrosurgical instrument operatively connected to the one or more active leads (18) and one or more return electrodes (11) operatively connected to one or more return leads (19). The system (105) further ...

Vessel sealer and divider and method of manufacturing same

Bipolar forceps having monopolar extension

Vessel sealer and divider

Bipolar forceps having monopolar extension

Open vessel sealing instrument with cutting mechanism and distal lockout

OPEN VESSEL SEALING INSTRUMENT WITH CUTTING MECHANISM AND DISTAL LOCKOUT Abstract An open electrosurgical forceps (10) for sealing tissue including a pair of first s and second shaft members (12a, b) each having a jaw member (110, 120) disposed at a distal end (16a, b). The jaw members (110, 120) are movable from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members (110, 120) cooperate to grasp tissue therebetween. Each of the jaw members (110, 120) includes an electrically conductive sealing plate (112, 122) for communicating lo electrosurgical energy through tissue held therebetween. At least one of the jaw members (110, 120) includes a knife channel (115) defined along a length thereof which is dimensioned to reciprocate a cutting mechanism (80) therealong for cutting tissue disposed between jaw members (110, 120). An actuator (40) having a rack and pinion system advances the cutting mechanism (80) from a first position wherein ...

Sterilisation device

Surgical instrument

SURGICAL INSTRUMENT Abstract A surgical instrument (10) is provided. The surgical instrument (10) includes a housing (12). The surgical instrument (10) includes an elongated portion (16) extending 5 distally from the housing (12) and defines a longitudinal axis. An end effector (26) operably couples to the elongated portion (16). A first pivoting member pivotably couples to a distal end of the elongated portion. The first pivoting member (150) defines a first pivot axis intersecting the longitudinal axis when the first pivoting member (150) is rotated. A distal mounting assembly (104) pivotably couples to the first pivoting member io (150) and operably couples to the end effector (26). The distal mounting assembly (104) defines a second pivot axis intersecting the first pivot axis and the longitudinal axis when the proximal mounting assembly (102) is rotated. C)l to) ...

Impedance mediated control of power delivery for electrosurgery

A method of controlling electrosurgical power delivery based on a comparison of sensed tissue impedance to various impedance threshold values is provided. Energy is delivered to tissue in a sealing cycle as a series of pulses. An initial pulse has a profile with a preset energy starting value that increases at a ramping rate to a preset end value. Sensed impedance data are monitored throughout each pulse and compared to each of an impedance threshold value for RF setpoint, an impedance threshold value for cumulative time, and an impedance threshold value for energy cutback. Based on sensed impedance during a pulse, the profile of a subsequent pulse can be modified. In the event of a high impedance event that reflects low tissue presence, energy may be cutback. A sealing cycle is stopped when a cumulative amount of time with an impedance value over the impedance cumulative time threshold value reaches a sealing cycle duration limit.

Electrocautery method and apparatus

An electrode structure and a mechanism for automated or user-selected operation or compensation of the electrodes, for example to determine tissue coverage and / or prevent arcing between bottom electrodes during electrocautery is disclosed.

Bipolar concentric electrode assembly for soft tissue fusion

Electrosurgical instrument for coagulation and cutting

Bipolar electrosurgical sealer and divider

An electrosurgical instrument is provided that captures, compresses, fuses and cuts tissue between upper and lower jaws connected to pivotably movable handles. The instrument includes a force and over compression regulation mechanism that is configured such that in a clamped configuration, the jaws delivers a gripping force between the first jaw and the second jaw between a predetermined minimum force and a predetermined maximum force.

Surgical instrument with Stamped Double-Flag Jaws

SURGICAL INSTRUMENT WITH STAMPED DOUBLE-FLAG JAWS A surgical instrument includes an elongated shaft having a distal portion and a proximal portion coupled to a housing. An inner shaft member extends at least partially through the elongated shaft and is selectively movable in a longitudinal direction. An end effector (414) is supported by the distal portion of the elongated shaft (416). The end effector includes upper and lower jaw members (430, 432) pivotally coupled to the distal portion of the elongated shaft about a pivot axis and including a pair of laterally spaced flanges. The pairs of flanges of the jaw members are arranged in an offset configuration such that one flange of the upper jaw member is positioned on a laterally exterior side of a corresponding flange of the lower jaw member, and the other flange of the upper jaw member is positioned on a laterally interior side of the other flange of the lower jaw member. 1It ...

Devices and methods for cutting tissue

Various medical devices and methods for cutting, evacuating and/or performing work on tissue are provided. The devices and methods may utilize a reciprocating mechanism or motor powered by suction from a vacuum source. The medical devices and methods may be used on tissue in various regions of a patient's body and for treating various conditions, e.g., for performing a polypectomy.

Optimal geometries for creating current densities in a bipolar electrode configuration

OPTIMAL GEOMETRIES FOR CREATING CURRENT DENSITIES IN A BIPOLAR ELECTRODE CONFIGURATION Abstract An end effector assembly (105) for use with an electrosurgical instrument is s provided. The end effector assembly (105) has a first jaw member (110) having a first pair of tissue contacting surfaces (1 12a, 1 12b) and an insulator (115) disposed therebetween. The end effector assembly (105) also has a second jaw member (120) that includes a second pair of tissue contacting surfaces (122a, 122b), a pair of insulators (125a, 125b) disposed between the second pair of tissue contacting surfaces (122a, 122b), 1o and a cutting element (127) disposed between the pair of insulators (125a, 125b). The relative movement of the first jaw member (110) toward the second jaw member (120) causes the insulator (115) of the first jaw member (110) and the pair of insulators (125a, 125b) of the second jaw member (120) to pinch tissue disposed between the first jaw member ( 10) and the second jaw member (120). 112a ...

Reusable medical device with advanced counting capability

REUSABLE MEDICAL DEVICE WITH ADVANCED COUNTING CAPABILITY An electrosurgical instrument (10) including a housing assembly (6) having a first disposable treatment portion (8) selectively attached thereto. The disposable treatment portion (8) is adapted to connect to an electrosurgical generator that supplies energy to the electrosurgical instrument (10). A control circuit (205) is included and disposed in electrical communication between the electrosurgical generator and the first disposable treatment portion (8). The control circuit (205) is selectively actuatable to enable the flow of electrosurgical energy from the electrosurgical generator to the first disposable treatment portion (8). An indicator (210, 220, 230), coupled to the housing assembly (6) or the first disposable treatment portion (8), is configured to indicate a parameter related to the use of the electrosurgical instrument (10). The control circuit (205) is configured to prevent activation of the electrosurgical instrument ...

Square wave for vessel sealing

SQUARE WAVE FOR VESSEL SEALING Abstract A square wave generator (30) suitable for use with an electrosurgical device (2) is provided. The square wave generator includes a voltage source (102) configured to output a waveform and a comparator (104) operatively coupled to the voltage source and configured to output energy in the form of a square wave. The generator may also include at least one sensor (122) configured to sense an operational parameter of the energy outputted from the comparator(104) and to provide a sensor signal corresponding thereto and a controller (124) adapted to receive the at least one sensor signal and in response thereto control the voltage source. 3323827_1 ELECTROSURGICAL 2 20- ELECTROSURGICAL 108 GENERATOR FIG. l B ...

Endoscopic bipolar electrosurgical forceps

DEVICES FOR DELIVERING AGENTS TO TISSUE REGION WHILE PREVENTING LEAKAGE

ELECTROSURGICAL INSTRUMENT FOR SEALING VESSELS

An electrosurgical instrument for sealing tissue includes an inner member and an outer clamping member which each include a ring handle near a proximal end thereof. Each of the inner member and the outer clamping member also includes a seal surface at the distal end thereof and the outer clamping member is movable from a first position wherein the seal surfaces are spaced relative to one another to a second position wherein the seal surfaces are disposed in opposing relation relative to one another for grasping tissue therebetween. A rod is operably connected at the proximal end to the outer clamping member and is operably connected at a distal end to the seal surface of the outer clamping member. The rod is translatable to pivot the seal surface of the outer clamping member relative to the seal surface of the inner member. A stop located near the proximal end of the inner member for limiting distal movement of the push rod and to maintain a gap between the opposing seal surfaces when the ...

BILATERAL FOOT JAWS

The present disclosure relates to a surgical instrument which includes a drive rod assembly having a hollow shaft portion. A central shaft is slidably disposed in and axially aligned with the hollow shaft portion. The instrument may further include a handle assembly coupled to hollow shaft portion and the central shaft of the drive rod assembly. A pair of opposing jaw members each operatively associated with the distal end of the hollow shaft portion, the jaw members being movable relative to one another between a first position wherein the jaw members are disposed in spaced relation relative to one another and a second position wherein the jaw members are approximated towards one another. The instrument may further include a source of electrical energy connected to each jaw member for conducting energy therebetween.

ACCESSING DATA STORED IN A MEMORY OF A SURGICAL INSTRUMENT

A process and system are disclosed for downloading sensor data, stored in a memory device of a surgical cutting and fastening instrument, to an external or remote computer device. The process may involve storing data from one or more sensors of a surgical cutting and fastening instrument in a memory device of a control unit of the surgical cutting and fastening instrument during a surgical procedure involving the surgical cutting and fastening instrument. Next, after the surgical procedure, a data link between the control unit and the remote computer device is established. Then, the sensor data can be downloaded from the control unit to the remote computer device.

STERILISATION DEVICE

Apparatus for sterilisation of a female mammal comprising at least one separation member for separation of a fallopian tube from a uterine cavity of the female mammal, a circulation assembly which is operatively connected to said at least one separation member, and at least one sterilisation lumen which is operatively connected to said circulation assembly and debouching at a distal side of said at least one separation member, said at least one sterilisation lumen being adapted for injection in use of a tissue necrotising fluid capable of necrotising a lining of at least a part of said fallopian tube, wherein said circulation assembly is adapted to circulate said tissue necrotising fluid within said sterilisation lumen and said fallopian tube. The apparatus allows quick, simple, safe and reliable sterilisation.

MICROWAVE AMPLIFICATION APPARATUS FOR AN ELECTROSURGICAL INSTRUMENT

Various embodiments provide a microwave amplification apparatus for an electrosurgical instrument. The microwave amplification apparatus comprises: a cable assembly; a proximal launch portion, and a distal amplification portion. The proximal launch portion is connected to a proximal end of the cable assembly, and the proximal launch portion comprises: a DC source configured to launch a DC signal along the cable assembly, and a microwave source configured to launch a microwave signal along the cable assembly. The distal amplification portion is connected to a distal end of the cable assembly, and the distal amplification portion comprises: a power amplifier configured to receive the microwave signal as an input signal to be amplified. The distal amplification portion is configured to apply the DC signal as a drain voltage across the power amplifier. Also, the power amplifier has an output that is connectable to deliver an amplified microwave signal to a structure that is configured to deliver ...

DOPPLER DIRECTED SUTURE LIGATION DEVICE AND METHOD

A ligation device (100) includes a cannula (104) having first and second extendable members (120, 122) and a Doppler wand (140). The Doppler wand (140) permits an anatomical vessel, such as a blood vessel, to be located in close proximity to the distal end of the cannula (104). The extendable members (120, 122) are extendable on two opposite sides of the vessel. A length of ligation material, such as suture material, extends through the first extendable member and is attached to a detachable element (124) mounted to the distal most end of the extendable member. The second extendable member (122) includes a snare (126). The first extendable member (120) includes curved portions which, when the member (120) is extended distally, extend the detachable element (124) into position for the snare (126) so that the snare (126) can grab the loop. Once ensnared, the detachable element (124) is released from the first extendable member (120), which pulls the ligation material around the vessel. The ...

ELECTROSURGICAL APPARATUS FOR DELIVERING RADIOFREQUENCY ENERGY AND MICROWAVE ENERGY AND A METHOD FOR ITS USE

An electrosurgical waveform (500) is to be provided having both radiofrequency (RF) energy and microwave energy components arranged to perform efficient haemostasis in biological tissue. The waveform comprises a first portion (506) primarily of RF electromagnetic energy and a second portion (508) primarily of microwave electromagnetic energy that follows the first portion. The second portion further comprises a plurality of RF pulses (510), wherein the first portion is to transition to the second portion when either a duration (512) of the first portion meets or exceeds a predetermined duration threshold or an impedance determined during the first portion meets or exceeds a predetermined threshold.

ELECTROSURGICAL GENERATOR CONTROL SYSTEM

Systems and methods for enhancing surgical outcomes by providing generators having optimal RF output for sealing, fusing and/or cutting tissue or vessels under all dynamic conditions are described. Examples of dynamic conditions may include varying tissue impedance load due to electrosurgical operations or tissue affects, any operational conditions and commands determined by the surgeon, surgical procedure and/or device script. This is achieved by implementing a digital closed-loop control system within the electrosurgical generator to regulate voltage, current, and power of the RF output. The digital closed-loop control system may include an RF amplifier for generating RF energy, a feedback system for constantly monitoring the electrical characteristics, e.g., voltage, current, and power, of the supplied RF energy to a connectable electrosurgical instrument and a microcontroller for processing measurement data from the feedback system and adjusting the output of the RF amplifier to meet ...

VESSEL SEALING INSTRUMENT WITH ELECTRICAL CUTTING MECHANISM

An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes a pair of spaced apart electrically conductive tissue contacting surfaces which each have an insulator disposed therebetween, the conductive surfaces are connected to an electrosurgical energy source. The first jaw member includes an electrically conductive cutting element disposed within the insulator which extends towards the second tissue contacting surface to create a gap therebetween. The cutting element is inactive during the sealing process while the two pairs of electrically conductive surfaces are activated to seal tissue. During the cutting process, the cutting element is energized to a first potential and at least one electrically conductive tissue contacting surface is energized ...

OCCLUSION APPARATUS

Methods, apparatus, and systems for occluding a tissue opening are provided. One embodiment includes a catheter having an elongate body and a first lumen to direct hypertonic saline through an opening in the lumen to tissue of a fossa ovalis. The embodiment includes a radiofrequency (RF) electrode coupled to the elongate body proximal a distal end of the elongate body. The RF electrode can emit RF energy to the tissues of the passage and the hypertonic saline can facilitate a distribution of the RF energy along the tissue to fuse the tissue of the passage.

BIOLOGICAL TISSUE CLOSURE DEVICE AND METHOD

... ²²²Devices and methods for biological tissue closure are disclosed. Arteriotomy ²closure and hemostasis devices and methods are disclosed. A device that can ²provide a lateral tension across an opening in the tissue and apply energy to ²seal the tissue is disclosed. Methods for using the device are also disclosed.² ...

SYSTEM FOR REGULATING HEATING IN A TISSUE SEALING AND CUTTING DEVICE

A device for handling tissue; including: a main body; a pair of opposing arms connected to the main body, the opposing arms having working surfaces thereon; a heating element disposed on one of the working surfaces; and a resistive element wired in parallel with the heating element.

ELECTROTHERMAL DEVICE FOR SEALING AND JOINING OR CUTTING TISSUE

A device and method are provided for sealing and joining or cutting tissue, which is particularly suitable for laparoscopic and endoscopic surgery. The device makes use of the controlled application of a combination of heat and pressure to seal adjacent tissues, to join adjacent tissues, or to anastomose tissues, whereby tissue is heated for an optimal time and at an optimal temperature under optimal pressure to maximize tissue seal strength while minimizing collateral tissue damage. The device of the present invention is lightweight and therefore portable, and is particularly useful in field conditions where a source of external power may not be readily available.

MATTER MANIPULATOR WITH CONDUCTIVE COATING

A device including a tissue manipulator, a conductive coating and at least one connector area. For example, the tissue manipulator may be scissors, clip appliers or clips, staplers and staple or a vessel sealing device. The conductive coating may be applied to the clip, staple or jaws of the scissors or sealing device. Electrical energy can be supplied through areas of contact (connector areas) - such as between an anvil and a pusher of the stapler and the conductive coating on the staple. The conductive coating can be energized along with mechanical application of the manipulator to transform and facilitate attachment of tissue layers.

ELECTROSURGICAL FORCEPS FOR DELIVERING MICROWAVE ENERGY FROM A NON-RESONANT UNBALANCED LOSSY TRANSMISSION LINE STRUCTURE

Electrosurgical forceps for delivering microwave energy into biological tissue from a non-resonant unbalanced lossy transmission line structure located within or formed by the jaws of the forceps. The transmission line structure may be formed across the gap between the jaw element by opposed conductive elements, which are respectively electrically connected to inner and outer conductors of a coaxial cable. Alternatively, each jaw element may comprise its own lossy transmission line, whereby a power splitter is used to divide microwave energy from the coaxial cable. The forceps may be used endoscopically in the gastrointestinal tract or laparoscopically or in open surgery.

SURGICAL TOOL

The invention is concerned with cauterizing and resecting tissue. A pair of electrodes are placed on opposed tissue surfaces, and radio frequency power is applied through the electrodes to cauterizing a tissue mass therebetween. After cauterization has been effected, the tissue may be resected along a plane within the cauterized region with minimum or no bleeding. The tissue mass may then be removed.

SYSTEM AND METHOD FOR DC TISSUE IMPEDANCE SENSING

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which supply energy to the tissue. The active output terminals are operatively connected to one or more active leads. The generator also includes one or more return output terminals which returns energy from the tissue. The return output terminals are operatively connected to at least one return lead. The system also includes an electrosurgical instrument operatively connected to the one or more active leads and one or more return electrodes operatively connected to one or more return leads. The system further includes an electrosurgical cable including one or more active leads and one or more return leads. The one or more active leads and one or more return leads are wound in a double helix fashion ...

BLADE DEPLOYMENT MECHANISMS FOR SURGICAL FORCEPS

A forceps includes first and second shafts, each having a jaw member disposed at a distal end thereof. At least one jaw member is moveable from an open to a closed position for grasping tissue therebetween. At least one jaw member is configured for reciprocation of a blade therethrough. A trigger assembly includes a trigger and at least one linkage coupled to the trigger and to the blade such that rotation of the trigger translates the blade between the retracted and the extended position. An interference member moveable between a locked position and an unlocked position is also provided. The interference member is configured to engage the linkage(s) when in the locked position to inhibit translation of the blade from the retracted to the extended position.

OPTIMAL GEOMETRIES FOR CREATING CURRENT DENSITIES IN A BIPOLAR ELECTRODE CONFIGURATION

An end effector assembly for use with an electrosurgical instrument is provided. The end effector assembly has a first jaw member having a first pair of tissue contacting surfaces and an insulator disposed therebetween. The end effector assembly also has a second jaw member that includes a second pair of tissue contacting surfaces, a pair of insulators disposed between the second pair of tissue contacting surfaces, and a cutting element disposed between the pair of insulators. The relative movement of the first jaw member toward the second jaw member causes the insulator of the first jaw member and the pair of insulators of the second jaw member to pinch tissue disposed between the first jaw member and the second jaw member.

SURGICAL FORCEPS

A forceps includes an end effector assembly having first and second jaw members. Each of the jaw members includes a proximal flange extending therefrom. Each of the proximal flanges defines a bifurcated configuration having first and second spaced-apart flange components. The first flange component of the first jaw member is configured to pivotably engage the second flange component of the second jaw member via a first protrusion-aperture coupling. The first flange component of the second jaw member is configured to pivotably engage the second flange component of the first jaw member via a second protrusion-aperture coupling different from the first protrusion-aperture coupling. One or both of the jaw members is pivotable relative to the other about the first and second protrusion-aperture couplings between a spaced-apart position and an approximated position for grasping tissue therebetween.

SURGICAL FORCEPS

A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members is configured to conduct energy between the jaw members and through tissue grasped therebetween to treat tissue. An insulative tubular member is movable relative to the end effector assembly between a retracted position, wherein the insulative tubular member is positioned proximally of the end effector assembly, and an extended position, wherein the insulative tubular member is disposed about the end effector assembly. A monopolar member is configured to apply energy to tissue to treat tissue when the insulative tubular member is disposed in the extended position.

SQUARE WAVE FOR VESSEL SEALING

A square wave generator suitable for use with an electrosurgical device is provided. The square wave generator includes a voltage source configured to output a waveform and a comparator operatively coupled to the voltage source and configured to output energy in the form of a square wave. The generator may also include at least one sensor configured to sense an operational parameter of the energy outputted from the comparator and to provide a sensor signal corresponding thereto and a controller adapted to receive the at least one sensor signal and in response thereto control the voltage source.

ELECTROSURGICAL INSTRUMENT AND METHOD OF USE

An electrosurgical medical device and method (Fig. 8A) for creating thermal welds in engaged tissue. In one embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying a conductive-resistive matrix of a conductively-doped non-conductive elastomer. The engagement surface portions thus can be described as a positive temperature coefficient material that has a unique selected decreased electrical conductance at each selected increased temperature thereof over a targeted treatment range. The conductive-resistance matrix can be engineered to bracket a targeted thermal treatment range, for example about 60°C to 80°C, at which tissue welding can be accomplished. In one mode of operation, the engagement plane will automatically modulate and spatially localize ohmic heating within the engaged tissue from Rf energy application-across-micron-scale portions of the engagement surface (155A). In another mode of operation, a conductive-resistive matrix can induce a "wave" ...

MOTOR DRIVEN ELECTROSURGICAL DEVICE WITH MECHANICAL AND ELECTRICAL FEEDBACK

An electrosurgical device comprises an end effector, a cutting member, and en electromechanical driver. The end effector comprises a pair of jaws that clamp tissue. The jaws include electrodes that deliver RF energy to clamped tissue. The cutting member cuts tissue clamped between the jaws. The electromechanical driver drives the cutting member. A control module commands the electromechanical driver, and regulates the delivery of RF energy to the electrodes, based on a combination of user input and feedback signals from the electrodes and from the electromechanical driver. The device may provide tactile feedback to the user through the user input feature, based on a load encountered by the cutting member. The device may alert the user when the exterior of end effector makes incidental contact with tissue, to avoid inadvertently burning the tissue. The device may include a removable battery pack to power the electromechanical driver and the electrodes.

MODULAR SURGICAL INSTRUMENTS WITH CONTAINED ELECTRICAL OR MECHANICAL SYSTEMS

A surgical instrument includes an elongated shaft module and a handle module selectively separable from one another. The elongated shaft module includes an elongated shaft member and a pair of jaw members supported at a distal end of the elongated shaft member, at least one of the jaw members moveable relative to the other jaw member between open and closed positions. The handle module includes a housing including an opening extending longitudinally therethrough. The opening is dimensioned to permit passage of the pair of jaw members in the closed position. The handle module also includes a movable handle movable relative to the housing to move the pair of jaw members between open and closed positions, and a lock to secure the elongated shaft module in place within the housing.

INTERFACE MODULE ALLOWING DELIVERY OF TISSUE STIMULATION AND ELECTROSURGERY THROUGH A COMMON SURGICAL INSTRUMENT

Concepts presented herein relate to an interface module that can be electrically coupled to an electrical stimulation generator, a radio frequency generator and an instrument. A selection module is coupled to the interface module and operates in a first mode to deliver electrical stimulation signals from the electrical stimulation generator to the instrument and in a second mode to deliver radio frequency signals from the radio frequency generator to the instrument.

ELECTROSURGICAL DEVICES INCLUDING TRANSVERSE ELECTRODE CONFIGURATIONS

An end effector assembly for an electrosurgical device includes first and second jaw members movable between spaced-apart and approximated positions. The jaw members define opposed tissue-contacting surfaces that cooperate to define a tissue grasping area within which tissue is grasped when the jaw members are moved to the approximated position. At least one of the jaw members includes an interior electrode and at least one of the jaw members includes first and second exterior electrodes. The interior and exterior electrodes are configured to conduct energy through tissue grasped within the tissue grasping area to seal tissue. The interior electrodes are disposed interiorly of outer bounds of the tissue grasping area, while the exterior electrodes are disposed exteriorly. As a result, upon conduction of energy through tissue grasped within the tissue grasping area, tissue disposed adjacent the exterior electrodes is boiled before boiling of tissue disposed adjacent the interior electrodes ...

SURGICAL DEVICE WITH POWERED ARTICULATION WRIST ROTATION

A surgical instrument for treating tissue, the instrument including a housing and a shaft with an articulating portion and an end effector. The surgical instrument including a first casing connected to and rotatable with the proximal end of said shaft with an internal frame housed within the first casing and a plurality of posts supported by the internal frame and connected on their distal ends to at least one drive wire, and connected on their proximal ends to a threaded shaft; and a second casing connected to the first casing and rotatable therewith, said second casing housing the threaded shafts. The surgical instrument includes a first electric motor driving a first gear interfacing with the threaded shafts such that a first pair of the plurality of threaded shafts rotate in the same direction and cause the articulating portion to articulate in a first plane.

DEVICES AND METHODS FOR CUTTING TISSUE

Various medical devices and methods for cutting, evacuating and/or performing work on tissue are provided. The devices and methods may utilize a reciprocating mechanism or motor powered by suction from a vacuum source. The medical devices and methods may be used on tissue in various regions of a patient's body and for treating various conditions, e.g., for performing a polypectomy.

BIPOLAR ELECTROSURGICAL INSTRUMENT WITH REPLACEABLE ELECTRODES

A bipolar electrosurgical instrument for vessel sealing comprises first and second members connected by a pivot. A pair of jaws have opposable seal surfaces that are designed to grasp vascular tissue and conduct bipolar electrosurgical current therethrough. Electrodes on the jaws, including the seal surfaces, are removable and disposable. The jaws of the instrument have mechanical interfaces designed to accept replacement electrodes. The instrument further comprises interlocking ratchets designed to hold a constant closure force between the seal surfaces. Wires extend from the electrodes along one of the members and are connectable to an electrosurgical generator.

For surgical instrument frequency agile generator

For the fluid applied to the surgical instrument of the uas characteristic structure

IMPEDANCE MEDIATED CONTROL OF POWER DELIVERY FOR ELECTROSURGERY

Surgical instrument with dispensable components

Energy based devices and methods for treatment of patent foramen ovale

Methods and apparatus for treatment of patent foramen ovale (PFO) provide for applying energy to tissues adjacent the PFO with a catheter device to substantially close the PFO acutely. Apparatus generally includes a catheter device having at least one energy transmission member at or near its distal end configured to apply energy to PFO tissues to acutely, substantially close the PFO. Applied energy may be monopolar or bipolar radiofrequency energy or any other suitable energy, such as laser, microwave, ultrasound, resistive heating or the like. Some embodiments of a catheter device fuirther include one or more tissue apposition members near the distal end for helping bring PFO tissues together, such as a PFO covering member, a vacuum applying member and/or the like. PFO closure via energy-based approaches of the invention may help prevent stroke, treat migraine headache, and possibly treat or prevent other medical conditions.

Surgical instruments with electrodes

A surgical stapling assembly is configured to be used to form a tissue seal having an arcuate portion. The surgical stapling assembly comprises an end-effector extending from the distal end of the shaft. The end-effector comprises a first portion and a second portion. The first portion comprises a first face at least partially surrounding the aperture, a staple cavity defined in the first face, a staple removably positioned within the staple cavity, and a first electrode positioned one of on and proximate to the first face. The second portion comprises a second face, an anvil pocket defined in the second face, and a second electrode positioned one of on and proximate to the second face, and a second electrode. The first electrode and the second electrode each comprise an arcuate portion. The first electrode has a different polarity than the second electrode.

Surgical fastening devices comprising rivets

An end-effector assembly is configured to be attached to a surgical instrument. The end-effector assembly comprises a first jaw comprising an electrode, a second jaw comprising a rivet cavity, and a rivet. At least one of the first jaw and the second jaw is movable relative to the other jaw. At least a portion of the rivet is removably positioned within the rivet cavity. The rivet comprises a tissue-engaging portion, an elongate portion extending from the tissue-engaging portion, and a meltable portion. The end-effector assembly comprises a driver configured to move the rivet between a first position in which the rivet is stored at least partially within the rivet cavity and a second position in which the rivet is at least partially deployed from the rivet cavity. The meltable portion of the rivet is positioned against or adjacent to the electrode when the rivet is in the second position.

Surgical Tool with Crossbar Lever

A crossbar lever of a surgical tool has a bridge portion which extends forward and a transverse portion. The bridge portion is retained between the second and third fingers of the surgeon's hand, and this retention establishes greater control and stability of the surgical tool. The crossbar lever pivots relative to a handgrip of a handle assembly and a shaft assembly extends from the handle assembly. Tissue contacting or manipulating devices such as jaws are located at the forward end of the shaft assembly. The surgical tool is particularly useful in performing minimally invasive surgical procedures.

Surgical access apparatus

An access apparatus for use during a surgical procedure to provide access to the interior of the body includes an access member defining a longitudinal axis and having a proximal end for being disposed at an exterior side of the body and a distal end for extending into the interior of the body. The access member has a bore therethrough dimensioned to permit passage of an object. A seal is disposed within the bore of the access member. The seal includes a fabric material and an elastomeric material, and defines an internal passageway dimensioned to form a substantial sealing relation with an object inserted therethrough.

Articulation joint features for articulating surgical device

An electrosurgical device comprises a body, an end effector, a cutting member, and a shaft. The end effector includes a pair of jaws that are operable to deliver RF energy to tissue that is clamped between the jaws. The cutting member is operable to sever tissue that is clamped between the jaws. The shaft extends between the body and the end effector. The shaft includes an articulation section that is operable to selectively position the end effector at non-parallel positions relative to the longitudinal axis of the shaft. Some versions include a rotation section that is distal to the articulation section. The rotation section is operable to rotate the end effector relative to the articulation section.

Surgical instrument with jaw member

A surgical instrument for supplying energy to tissue may comprise a handle, a trigger, an electrical input, and a shaft extending from the handle. The surgical instrument may comprise and end effector first and second tissue engaging surfaces that are slanted with respect to a transection plane. The end effector may, for example, have an electrode defining a V-shaped cross sectional profile. The end effector may comprise a plurality of raised surfaces that are received by a plurality of indentions when the end effector is in the closed position. The end effector may comprise a cutting member having a plurality of bands.

Surgical Forceps

A forceps includes an end effector assembly having first and second jaw members moveable with respect to one another between an open position and a closed position. A knife channel having a body and a base is defined within each jaw member. A knife assembly includes a knife having a bifurcated distal end. The bifurcated end includes first and second cutting members each defining an opposed cutting surface and having a tab at a free end thereof for translation through the base of a knife channel. The knife is translatable into the channels when the jaw members are in the closed position such that the cutting members are approximated when translated through the channels. The knife is also translatable into the channels when the jaw members are in the open position such that the cutting members are flexed apart when translated through the jaw members.

Surgical instrument with magnetic clamping force

A surgical instrument comprising an end effector, the end effector comprising first and second opposing jaw members, wherein at least one of the first and second jaw members are moveable such that the first and second jaw members are transitionable between open and closed positions. The first jaw member may comprise a permanent magnet. The second jaw member may also comprise a magnet (e.g., permanent or soft). The magnetic motive force between the magnets of the first and second jaw members may attract each other to thereby reduce the external force required to transition the first and second jaw members to the closed position. In addition, the magnets may be configured to repeal each other to thereby aid in opening the jaw members.

Surgical instrument with modular end effector and detection feature

An apparatus comprises a handle assembly, a first transmission assembly, and a second transmission assembly. The first transmission assembly is in selective communication with the handle assembly and is operable to deliver energy to a surgical site. The second transmission assembly is in selective communication with the handle assembly and is operable to deliver energy to a surgical site. The first transmission assembly and the second transmission assembly are operable in different modalities, such as ultrasonic and RF electrosurgical modalities, using the same handle assembly.

Fingertip Electrosurgical Instruments for Use in Hand-Assisted Surgery and Systems Including Same

A fingertip-mountable electrosurgical instrument includes a monopolar electrode capable of directing energy into tissue, and a holder configured to be operably coupled to the monopolar electrode. The holder is also configured to be operably coupled to an energy source. The holder includes a housing body and one or more attachment members coupled to the housing body. The one or more attachment members are configured to be removeably attachable to a user's finger. The housing body includes a distal end and a proximal end. The monopolar electrode is mechanically coupled to the distal end of the housing body.

Endoscopic Surgical Forceps

An end effector assembly for an endoscopic surgical instrument includes a pair of jaw members disposed in opposing relation relative to one another. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. Each jaw member defines an arcuate configuration and includes a proximal segment and a distal segment coupled to the proximal segment. The distal segment is moveable with respect to the proximal segment between a use position, wherein the proximal segment and the distal segment cooperate to define the arcuate configuration of the jaw member, and an insertion position, wherein the distal segment is offset relative to the proximal segment to interrupt the arcuate configuration of the jaw member.

Electrosurgical sealing tool having haptic feedback

A surgical tool system includes an electrosurgical tool for sealing and transecting tissue and a tactile feedback system integrated onto a handle of the tool that generates relevant feedback in at least the form of haptic effects to the user. The tactile feedback alerts the user of tissue properties, i.e., when tissue located within jaws of the tool is completely sealed, when the tissue is ready to be cut, the cutting rate or speed, the quantity of tissue located within jaws of the tool, and whether a blood vessel is fully located within jaws of tool. In addition, the tactile feedback alerts the user to the operating status of energy application during the procedure.

Endoluminal fold creation

Devices and methods are provided for forming one or more plications in the walls of a body cavity. In particular, endoscopic devices and methods are provided for forming and/or securing endoluminal tissue folds to reduce the volume of the gastric cavity. An end effector that includes a tissue receiving cavity can be delivered to a desired surgical site to allow a tissue fold to be formed within the tissue receiving cavity. A fastener can be used to secure the adjacent layers of tissue that form the tissue fold. The tissue folds can be effective to limit the stomach's capacity and create a feeling of satiety.

Endoluminal fold creation

Devices and methods are provided for forming one or more plications in the walls of a body cavity. In particular, endoscopic devices and methods are provided for forming and/or securing endoluminal tissue folds to reduce the volume of the gastric cavity. An end effector that includes a tissue receiving cavity can be delivered to a desired surgical site to allow a tissue fold to be formed within the tissue receiving cavity. A fastener can be used to secure the adjacent layers of tissue that form the tissue fold. The tissue folds can be effective to limit the stomach's capacity and create a feeling of satiety.

Vessel Sealing Instrument

A bipolar electrosurgical instrument includes a housing and an elongated shaft. An end effector is coupled to a distal end of the elongated shaft. A handle assembly includes a movable handle movable relative to a fixed handle for effecting movement of the jaw members from a first position to a second position. Each jaw member is configured to connect to a source of electrosurgical energy. A switch is disposed on the fixed handle and configured to be depressed between a first position and at least one subsequent position upon biasing engagement with a switch engaging surface disposed on the movable handle. The first position of the switch causes the relay of information to the user corresponding to a desired pressure on tissue grasped between the jaw members and the at least one subsequent position is configured to activate the source of electrosurgical energy.

System and Method for Detecting and Suppressing Arc Formation During an Electrosurgical Procedure

A method for suppressing arc formation during an electrosurgical tissue treatment procedure includes the steps of supplying pulsed current from an energy source to tissue and measuring the pulsed current supplied from the energy source. The method also includes the steps of comparing an instantaneous measured pulse to a predetermined threshold and controlling the pulsed current supplied from the energy source based on the comparison between the instantaneous measured pulse and the predetermined threshold.

Method and apparatus for real time monitoring of tissue layers

The disclosed method and apparatus employ ultrasound beams to monitor the tissue type composition of body tissue that is to be treated and the temperature at each body tissue type or layer in real time. Additionally, the disclosed method and apparatus also provides ultrasound-based thermo-control of an aesthetic body treatment session.

Optical devices and methods for selective and conventional photocoagulation of the retinal pigment epithelium

The present invention provides devices and methods for applying radiation to the retina of a patient. In one embodiment, an apparatus includes a radiation source for generating a radiation beam suitable for absorption by retinal pigment epithelial cells. One or more optical components are included to direct the beam onto the retina. A scanner is optically coupled to the radiation source to control movement of the beam in two dimensions to allow a scan over the retina. A controller applies control signals to the scanner to adjust beam movement to illuminate a plurality of retinal locations in a temporal sequence according to a predefined pattern. The device can be operated in one mode to effect selective targeting of retinal pigment epithelial cells, or in another mode to effect thermal photocoagulation of the retina.

Medical device

A medical device includes a steering unit at a proximal portion of a catheter to steer operations of a heating unit at a distal portion of the catheter. The steering unit includes a main body portion interlocked with the catheter; a slide portion interlocked with the heating unit and slidable relative to the main body portion; a guide unit interlocked with the main body portion and fixed to the slide portion for movement therewith; and an input connector electrically connected with the heating unit and connectable with an output connector for supplying electric energy to the heating unit. The guide unit hinders connection between the input connector and the output connector. A cutout portion enables connection between the input and output connectors when the guide unit moves with respect to the main body portion and the heating unit moves to a position at which the biological tissue is heatable.

Device and Method for Endovascular Treatment for Causing Closure of a Blood Vessel

An endovascular treatment method for causing closure of a blood vessel is provided. The method includes inserting into a blood vessel an optical fiber having a core through which a laser light travels and a spacer sleeve arranged around a distal portion of the core. A distal end of the core defines an enlarged light emitting face, which advantageously provides substantially lower power density while providing the same amount of total energy during a treatment session. After the insertion, laser light is applied through the light emitting face while the inserted optical fiber and spacer sleeve are longitudinally moved. The spacer sleeve positions the light emitting face away from an inner wall of the blood vessel and application of the laser light causes closure of the blood vessel.

Lever Latch Assemblies for Vessel Sealer and Divider

A surgical instrument includes a housing and an end effector spaced from the housing and transitionable between first and second conditions. A drive bar is coupled to the end effector and extends into the housing. The drive bar is translatable between first and second positions for transitioning the end effector between the first and second conditions. A handle assembly is moveable between initial and actuateds position for translating the drive bar between the first and second positions. One or more linkages couple the drive bar, the handle assembly, and the housing to one another by at least first, second and third pivots. At least one of the pivots is fixed and at least one of the pivots is floating. The second pivot is movable relative to the first and third pivots between an unlatched position and an over-center latched position for latching the end effector in the second condition.

Tissue Sealing Forceps

A forceps includes an end effector assembly having first and second jaw members. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes an opposed jaw surface having an electrically-conductive tissue sealing plate disposed thereon. The electrically-conductive tissue sealing plate includes a first portion configured to conduct energy through tissue grasped between the jaw members to create a main tissue seal and a second portion including a plurality of spaced-apart fingers extending from the first portion. The second portion is configured to conduct energy through tissue grasped between the jaw members to create an auxiliary tissue seal extending from the main tissue seal for reducing stress concentrations adjacent the main tissue seal.

Medical treatment apparatus and control method of medical treatment device

A medical treatment device to treat body tissues for conjugation, includes at least a pair of holding members configured to hold the body tissues, an energy output portion provided in at least one of the holding members and connected to an energy source to form a joined portion by supplying energy to the body tissues held by the pair of holding members and joining the body tissues, and a conjugation coating portion to a region from a neighborhood of a joined portion to coat joined surfaces with a substance capable of preventing fluid from invading during or after the body tissues being joined by adding the energy to the body tissues.

Apparatus, System, and Method for Performing an Electrosurgical Procedure

A bipolar forceps includes a shaft extending from a housing and includes an end effector assembly at its distal end. The end effector assembly has a pair of jaw members movable between an open position and a closed position. A knife assembly includes a cutter having a generally circular cross-section. The cutter is configured to cut tissue when the jaw members are in the closed position. One or more electrically conductive tissue sealing plates are disposed on each of the jaw members. The tissue sealing plates are adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue held between the jaw members to effect a tissue seal. An actuator is operably coupled to the knife assembly and is configured to selectively reciprocate the cutter relative to the jaw members.

Method For Securing A Stop Member To A Seal Plate Configured For Use With An Electrosurgical Instrument

A method for affixing a stop member to a seal plate for use with electrosurgical instruments is provided. An aperture is formed on a seal plate during a metal injection molding process thereof. A stop member is positioned within the aperture on the seal plate. The seal plate is, subsequently, sintered with the stop member positioned in the aperture.

Device and methods for renal nerve modulation

Systems for nerve modulation are disclosed. An example system may include a first elongate element having a distal end and a proximal end and having at least one transducer disposed adjacent the distal end. The transducer may be an ultrasound transducer. Activation of the transducer may radiate acoustic energy from in two directions simultaneously.

Device With an OCT System for Examining and Treating Living Tissue by Means of Heating of the Tissue by Absorbing Electromagnetic Radiation

A device for examining or treating living tissue by means of local heating of the tissue by absorbing electromagnetic radiation, with at least one radiation source emitting electromagnetic radiation, a control unit for controlling the irradiation parameters of the radiation source, and at least one FD-OCT apparatus with a light source emitting a measurement light for illuminating that tissue region in which the electromagnetic radiation is absorbed by the tissue, characterized by a computational unit for carrying out the following steps: determining the depth-resolved tissue velocity in the radiation direction of the measurement light at a predetermined measurement point of the tissue from the phase information from the FD-OCT interference light, integrating the established tissue velocity over time, differentiating the calculated time integral with respect to space, and displaying the spatial derivative as a function of space and time and/or feeding the spatial derivative as a function of space and time to an evaluation module and/or feeding the spatial derivative as a function of space and time to the control unit.

Impedance mediated control of power delivery for electrosurgery

A method of controlling electrosurgical power delivery is based on a comparison of sensed tissue impedance to various impedance threshold values. Energy is delivered to tissue in a sealing cycle as a series of pulses. A pulse has a profile with a preset energy starting value that increases at a ramping rate to a preset end value. Sensed impedance data are monitored throughout each pulse and compared to each of an impedance threshold value for RF setpoint, an impedance threshold value for cumulative time, and an impedance threshold value for energy cutback. Based on sensed impedance during a pulse, the profile of a subsequent pulse can be modified. In the event of a high impedance event that reflects low tissue presence, energy may be cutback. A sealing cycle is stopped when a cumulative amount of time with an impedance value over the impedance cumulative time threshold value reaches a limit.

Open Vessel Sealing Instrument and Method of Manufacturing the Same

An open electrosurgical forceps is provided and includes a pair of first and second shaft members each having a jaw member at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members cooperate to grasp tissue therebetween. A cutting mechanism is adapted to selectively and removably couple to one of the first and second shaft members. The cutting mechanism includes a cutting trigger for selectively advancing a knife blade extending therefrom through a knife channel defined along one or both of the jaw members. The first shaft member includes a stop feature formed thereon and the second shaft feature includes a stop member formed thereon. The stop feature and stop member configured to selectively engage one another to limit rotation of the first and second shaft members with respect to one another.

Unitary Endoscopic Vessel Harvesting Devices

Unitary surgical devices for tissue harvesting are disclosed. Such devices may include an elongated body extending between a proximal end and a distal end, and having one or more lumens extending through the elongated body and a tip disposed at the distal end of the elongated body. The harvesting device may further include a first gripping element disposed about the dissection tip and a second gripping element disposed about the dissection tip distally of the first gripping member. The second gripping member may be moveable with respect to the first gripping member for capturing a blood vessel between the first gripping member and the second gripping member. The blood vessel captured between first gripping member and the second gripping member may then be sealed and, subsequently, severed by a cauterizing element disposed between the first gripping member and the second gripping member.

Fine dissection electrosurgical device

An electrosurgical wand. At least some of the illustrative embodiments are electrosurgical wands including an elongate shaft that defines a handle end and a distal end, a first discharge aperture on the distal end of the elongate shaft, a first active electrode of conductive material disposed on the distal end of the elongate shaft, the first active electrode has an edge feature, a first return electrode of conductive material disposed a substantially constant distance from the first active electrode, and an aspiration aperture on the distal end of the elongate shaft fluidly coupled to a second fluid conduit.

Vessel Sealing Instrument with Reduced Thermal Spread and Method of Manufacture Therefor

An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, an inner tissue engaging surface, and an insulating layer disposed therebetween. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The jaws include a tissue-contacting seal plate having obverse and reverse surfaces. A series of ribs extend from the reverse surface of the seal plate into an insulating layer, which, in turn, is affixed to a jaw housing. The ribbed structure of the seal plate reduces thermal spread and edge cutting during vessel sealing procedures, leading to improved surgical outcomes.

Apparatus for performing an electrosurgical procedure

A surgical instrument is provided and includes a housing having a shaft. An end effector assembly is operatively connected to a distal end of the shaft and has a pair of first and second jaw members one of which is movable with respect to the other. A heat activated drive assembly operably couples to an actuation mechanism that is operably associated with the forceps and configured to supply thermal energy to the heat activated drive assembly. The heat activated drive assembly operably coupled to movable jaw member and configured to impart movement of the movable jaw member when the actuation mechanism is activated.

Vaginal remodeling device and method

This invention provides devices and methods for remodeling the female genital tissue, the device comprising a treatment tip, wherein the distal end of the treatment tip is conical, spherical, hemispherical, oval or circular in shape. The device further comprises one or more energy delivery elements for simultaneous cooling of the vaginal epithelium and transmission of energy for heating the tissues underneath the epithelium. In one embodiment, said device may further comprise one or more of the following: one or more temperature sensors for measuring the temperature at or below the epithelium; one or more directional sensors mounted on the hand piece or treatment tip; and one or more depth markers to show the depth of penetration of the treatment tip into the vagina. In another embodiment, this invention provides a device having a finger holder with electrodes for remodeling the female genital tissue.

Electrosurgical System

An electrosurgical system is provided. The electrosurgical system includes an electrosurgical generator including a computer having one or more microprocessors in operable communication with memory for storing information pertaining to the electrosurgical generator. An audio output module is in operable communication with the computer and configured to generate an audio output having the information pertaining to the electrosurgical generator embedded therein. A speaker is in operable communication with the audio output module for outputting the audio output. A recording device is configured to record the audio output. An audio collector is configured to receive the audio output from the recording device and decipher the embedded audio so that the information pertaining to the electrosurgical generator may be utilized for future use.

Rf sealing instrument

A bipolar RF sealing instrument includes two instrument branches which are movable relative to one another at least to an open and a closed position, and an instrument handle with two handle units, each associated with a respective instrument branch and coupled for manually operating the instrument branches and for applying to the instrument branches a predetermined closing force at the closed position, a first of the two instrument branches having a terminal for an external RF generator and the second instrument branch adapted to be electrically coupled via an instrument-internal power contact with the first instrument branch. The power contact may be a spring contact for contact closure at a closure position. In addition or alternatively, an instrument-internal control switch is present and only activated when the predetermined closing force is reached, to enable the supply of electric current from an external RF generator to the instrument branch(es).

Energy-harvesting system, apparatus and methods

An electrosurgical energy delivery apparatus includes an energy delivery circuit, a control circuit and an energy-harvesting system with a plurality of energy-harvesting circuits and a voltage regulator that provides a regulated DC voltage to the energy delivery circuit and/or the control circuit. The energy delivery circuit receives an electrosurgical energy signal having a primary frequency and selectively provides the electrosurgical energy signal to an energy delivery element. The control circuit connects to the energy delivery circuit and selectively enables the flow of electrosurgical energy to the energy delivery element. The plurality of energy-harvesting circuits each include an energy-harvesting antenna tuned to a particular frequency, a matched circuit configured to receive an RF signal from the energy-harvesting antenna, rectify the RF signal and generate a DC signal, and an energy storage device that connects to the voltage regulator to receive and store the DC signal.

Medical system and method of use

An instrument and method for applying thermal energy to targeted tissue. An instrument and method for tissue thermotherapy. In one embodiment, a method includes providing a vapor source comprising a pump configured for providing a flow of liquid media from a liquid media source into a vaporization chamber having a heating mechanism, actuating the pump to provide the liquid into the vaporization chamber, applying energy from the heating mechanism to convert a substantially water liquid media into a minimum water vapor level for causing an intended effect in tissue. For examples such levels can comprise at least 60% water vapor, at least 70% water vapor, at least 80% water vapor or at least 90% water vapor for causing an intended effect in tissue.

Gap control via overmold teeth and hard stops

A forceps includes an end effector assembly having a stop and a plurality of overmold teeth within at least one jaw member. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a stop molded within an insulative housing, and an insulator plate with the overmold teeth formed from plastic. The overmold teeth extend through openings within a sealing plate and protrude past the tissue sealing surface of the sealing plate. The stop primarily controls the gap distance between opposing jaw members by bearing most of an applied load and the overmold teeth assist in controlling the gap distance by bearing the remaining applied load.

Electrosurgical Devices and Methods of Use Thereof

In some embodiments, an electrosurgical device includes a shaft, a first U-shaped electrode at a distal end of the shaft, and a second blade shaped electrode at the distal end of the shaft. The second electrode includes a spherical distal end. And the second electrode is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by an aperture. In some embodiments, an electrosurgical device includes a shaft, a first electrode at a distal end of the shaft defining an aperture and comprising a pointed tip, and a second electrode disposed at the distal end of the shaft that is substantially coplanar with the first electrode such that the first electrode surrounds a perimeter of the second electrode. The second electrode is spaced from the first electrode by the aperture.

Vessel sealing system

An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.

Method for Reducing the Absorption of Nutrients Through the Gastrointestinal Tract

The present invention features methods for applying a force, such as laser or radiofrequency (RF) energy to the wall of the small intestine, which targets and eliminates a portion of the capillary and vascular network responsible for the transportation of nutrients to the patient. This causes the patient to absorb a reduced percentage of nutrients, which results in a reduced caloric intake. Various types and shapes of applicators are used to deliver the treatment energy, and these applicator devices are within the scope of the present invention. The applicator can be deployed through either a body cavity (e.g., the oral cavity), an open surgical procedure, or a minimally invasive incision or incisions.

Jaw assemblies for electrosurgical instruments and methods of manufacturing jaw assemblies

A jaw assembly includes a jaw member and a structural insert. The jaw member includes an arm member and a support base extending distally from the arm member. The arm member defines a first portion of the jaw member. The support base defines a second portion and a third portion of the jaw member. The second portion defines a cavity disposed between the first portion and the third portion. At least a portion of the structural insert is disposed within the cavity.

Electrosurgical unit and system

Systems, such as an electrosurgical unit, and method for use with an active electrode and a plurality of return electrodes are disclosure. An electrosurgical treatment is provided to tissue via the active electrode at a treatment site and a first return electrode of the plurality of return electrodes at the treatment site. An impedance measurement is received or determined of an impedance in the tissue between the active electrode at the treatment site and a second return electrode of the plurality of return electrodes at a site remote from the treatment site.

SURGICAL FORCEPS

A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided. 120-. (canceled)21. A method of preparing a tissue sealing instrument for reuse , comprising:obtaining a tissue sealing instrument that has been used to seal tissue, the tissue sealing instrument including a knife assembly having at least one proximal component and a first knife blade engaged to one another;disengaging the at least one proximal component from the first knife blade;discarding the first knife blade;at least one of cleaning or sterilizing the at least one proximal component; andengaging the at least one proximal component to a second knife blade.22. The method according to claim 21 , wherein disengaging the at least one proximal component from the first knife blade includes removing at least one pin coupling the at least one proximal component and the first knife blade.23. The method according to claim 21 , wherein engaging the at least one proximal component to the second knife blade includes positioning at least one pin to couple the at least one proximal component and the second knife blade to one another.24. The method according to claim 21 , wherein disengaging the at least one proximal component from the first knife blade includes disconnecting at least one ...

Surgical instrument comprising an articulation system ratio

A surgical instrument is disclosed comprising a shaft, an end effector, and an articulation system which are configured to provide various mechanical advantages.

SYSTEMS AND METHODS FOR ABLATIVE TREATMENT OF IRRITABLE BOWEL DISEASE

Methods, systems, and devices are described for treating diseases of the gastrointestinal tract, including ulcerative colitis, by delivering ablative energy to a tissue surface of the gastrointestinal tract and ablating the tissue to a controlled depth. Ablating the tissue may include removing a biofilm layer or coagulating tissue. 1. An apparatus for treating ulcerative colitis in a patient , comprising:an energy delivery element configured to deliver energy to a tissue surface of a tissue within the large intestine of the patient; anda controller configured to control ablation of the tissue with the delivered energy to a controlled depth.2. The apparatus of claim 1 , wherein the controlled depth comprises a biofilm layer at least partially covering the tissue surface.3. The apparatus of claim 1 , wherein the controlled depth comprises a biofilm layer at least partially penetrating below the tissue surface.4. The apparatus of claim 1 , wherein the controlled depth comprises tissue within the mucosal layers of the tissue.5. The apparatus of claim 1 , wherein the controlled depth comprises tissue below the mucosal layers of the tissue.6. The apparatus of claim 1 , wherein the controller is configured to control a duration of the delivery of energy.7. The apparatus of claim 1 , wherein the controller is configured to control an energy density of the delivery of energy.8. The apparatus of claim 1 , wherein the controller is configured to control a temperature at the tissue surface during the delivery of energy.9. The apparatus of claim 1 , wherein the energy delivery element is configured to delivery energy into crypts within the tissue.10. The apparatus of claim 1 , wherein the energy delivery element is configured to deliver energy to a fully circumferential portion of the large intestine.11. The apparatus of claim 1 , wherein the energy delivery element is configured to deliver energy to a partially circumferential portion of the large intestine.12. The apparatus of ...

System and method for testing electrosurgical generators

A system is provided. The system includes an electrosurgical generator configured to measure, collect and record data pertaining to a characteristic of tissue as the tissue is being electrosurgically treated. A tuner configured to couple to the electrosurgical generator includes a tuning circuit providing a load having a variable complex impedance for the electrosurgical generator when the electrosurgical generator is connected thereto. A controller including stored data pertaining to impedance values is in operable communication with the electrosurgical generator for retrieving the recorded data pertaining to the characteristic of tissue. The controller is in operable communication with the tuner for varying a complex impedance of the load. The controller configured to compare the recorded data pertaining to the at least one characteristic of tissue with the stored data pertaining to the plurality of impedance values and to adjust the tuner to one of the plurality of impedance values.

ARTICULATION JOINT FEATURES FOR ARTICULATING SURGICAL DEVICE

An electrosurgical device comprises a body, an end effector, a cutting member, and a shaft. The end effector includes a pair of jaws that are operable to deliver RF energy to tissue that is clamped between the jaws. The cutting member is operable to sever tissue that is clamped between the jaws. The shaft extends between the body and the end effector. The shaft includes an articulation section that is operable to selectively position the end effector at non-parallel positions relative to the longitudinal axis of the shaft. Some versions include a rotation section that is distal to the articulation section. The rotation section is operable to rotate the end effector relative to the articulation section. 120-. (canceled)21. An apparatus comprising:(a) a body; (i) a first jaw, and', '(ii) a second jaw, wherein the first and second jaws are operable to clamp tissue therebetween; and, '(b) an end effector comprising (i) a proximal shaft portion defining a longitudinal axis, and', (A) a proximal section end coupled to the proximal shaft portion,', '(B) a distal section end coupled to the end effector,', '(C) a first longitudinal portion extending from the proximal section end to the distal section end, and', '(D) a second longitudinal portion extending from the proximal section end to the distal section end,', 'wherein the first and second longitudinal portions are configured to mate to define a body of the articulation section., '(ii) an articulation section extending between the proximal shaft portion and the end effector, wherein the articulation section is operable to selectively articulate the end effector relative to the longitudinal axis, wherein the articulation section comprises], '(c) a shaft assembly extending between the body and the end effector, wherein the shaft assembly comprises22. The apparatus of claim 21 , wherein the first longitudinal portion comprises a first longitudinal half claim 21 , wherein the second longitudinal portion comprises a second ...

SURGICAL INSTRUMENT WITH USER ADAPTABLE TECHNIQUES

A method for coagulating and dissecting tissue. The method includes measuring a tissue property and delivering multiple energy modalities to the tissue based on the tissue property. The energy modalities being delivered from a generator either alone or in combination. 1. A method comprising:delivering, by a first drive circuit, a first energy modality to an end effector of a surgical instrument interacting with tissue;determining, by a processor, a tissue parameter of the tissue interacting with the end effector;comparing, by the processor, the determined tissue parameter with a threshold value of the tissue parameter; anddelivering, by a drive circuit, a second energy modality to the end effector when the determined tissue parameter is greater than or equal to the threshold value of the tissue parameter;wherein the first energy modality is different from the second energy modality.2. The method of claim 1 , wherein the tissue parameter comprises tissue impedance claim 1 , and the method further comprising claim 1 , calculating claim 1 , by the processor claim 1 , the tissue impedance based on electrical parameters associated with the first energy modality.3. The method of claim 1 , further comprising:controlling, by the processor, the first energy modality delivered to the end effector based on the tissue parameter as an input; andselecting, by the processor, the second energy modality to deliver to interact with the tissue by the end effector, wherein properties of the first and second energy modalities correspond to a type of interaction between the end effector and the tissue.4. The method of claim 1 , further comprising delivering claim 1 , by the first drive circuit claim 1 , the first energy modality until a tissue seal is formed.5. A method comprising:delivering, by a drive circuit, a first drive signal to an end effector of a surgical instrument at an amplitude;measuring, by a processor, a tissue parameter of tissue engaged with the end effector;modulating, ...

SURGICAL SYSTEM WITH USER ADAPTABLE TECHNIQUES BASED ON TISSUE IMPEDANCE

A method for treating tissue includes applying an energy modality to tissue at an amplitude, measuring tissue impedance of the tissue, modulating application of the energy modality based on the measured tissue impedance, and ceasing application of the energy modality when a termination parameter is met. 1. A method for treating tissue comprising:delivering, by a drive circuit, an energy signal to a surgical instrument at an amplitude;measuring, by a processor, tissue impedance of tissue engaged with the surgical instrument;modulating, by the processor, delivery of the energy signal based on the measured tissue impedance; andceasing delivery of the energy signal when a termination parameter is met.2. The method of claim 1 , wherein the energy signal is an RF energy signal claim 1 , and wherein the amplitude is a therapeutic amplitude or a sub-therapeutic amplitude.3. The method of claim 1 , further comprising determining that the tissue is sealed based on measuring at least one of:an initial tissue impedance;an initial jaws-aperture of an end effector;a current tissue impedance;a rate of change of tissue impedance;ultrasonic energy driven into the tissue;RF energy driven into the tissue; anda transaction time.4. The method of claim 1 , wherein the energy signal is an RF energy signal or an ultrasonic energy signal.5. The method of claim 1 , wherein the energy signal comprises a first energy signal claim 1 , and wherein modulating delivery of the energy signal based on the measured tissue impedance comprises modifying an output power of a generator claim 1 , modifying an output waveform of the generator claim 1 , selecting a second energy signal to deliver to the surgical instrument claim 1 , or modifying the termination parameter.6. The method of claim 1 , wherein ceasing delivery of the energy signal when the termination parameter is met comprises ceasing delivery of the energy signal upon the tissue impedance matching a threshold value of tissue impedance.7. The ...

ELECTROSURGICAL INSTRUMENT WITH END-EFFECTOR ASSEMBLY INCLUDING ELECTRICALLY-CONDUCTIVE, TISSUE-ENGAGING SURFACES AND SWITCHABLE BIPOLAR ELECTRODES

An electrosurgical instrument includes a housing, an elongated shaft, and an end-effector assembly. The proximal end of the shaft is operably associated with the housing. The end-effector assembly is operably coupled to the distal end of the shaft and includes first and second jaw members. Each of the first and second jaw members includes a sealing plate and a bipolar electrode. Either one or both of the first and second jaw members is movable from a position in spaced relation relative to the other jaw member to at least one subsequent position wherein the sealing plates cooperate to grasp tissue therebetween. The electrosurgical instrument includes a semiconductor switch operably coupled to at least one of the sealing plates and at least one of the bipolar electrodes. The semiconductor switch is configured to enable user selection between energizing the at least one sealing plate or the at least one bipolar electrode. 120.-. (canceled)21. An electrosurgical instrument , comprising:an end-effector including first and second jaw members, each of the first and second jaw members including an electrically-conductive, tissue-engaging surface and a bipolar electrode, at least one of the first and second jaw member movable from a position in spaced relation relative to the other jaw members to at least one subsequent position wherein the electrically-conductive, tissue-engaging surfaces cooperate to grasp tissue therebetween; anda four-quadrant semiconductor switch operably coupled to at least one of the electrically-conductive, tissue-engaging surfaces and at least one of the bipolar electrodes, wherein the semiconductor switch is configured to enable user selection between energizing the at least one electrically-conductive, tissue-engaging surface or energizing the at least one bipolar electrode.22. The electrosurgical instrument of claim 21 , wherein the four-quadrant semiconductor switch is disposed proximate to the at least one bipolar electrode.23. The ...

Arrays for Longitudinal Delivery of TTFields to a Body

Tumors in portions of a subject's body that have a longitudinal axis (e.g., the torso, head, and arm) can be treated with TTFields by affixing first and second sets of electrodes at respective positions that are longitudinally prior to and subsequent to a target region. An AC voltage with a frequency of 100-500 kHz is applied between these sets of electrodes. This imposes an AC electric field with field lines that run through the target region longitudinally. The field strength is at least 1 V/cm in at least a portion of the target region. In some embodiments, this approach is combined with the application of AC electric fields through the target region in a lateral direction (e.g., front to back and/or side to side) in order to apply AC electric fields with different orientations to the target region. 1. An apparatus for treating a target region in a limb of a subject's body with TTFields , the apparatus comprising:a first set of one or more capacitively coupled electrodes;a first substrate configured to hold the first set of one or more electrodes against the subject's body so that the first set of one or more electrodes partially surrounds a first side of the limb at a position that is proximal to the target region;a second set of one or more capacitively coupled electrodes;a second substrate configured to hold the second set of one or more electrodes against the subject's body so that the second set of one or more electrodes partially surrounds a second side of the limb at a position that is distal to the target region, wherein the second side of the limb is opposite to the first side of the limb;a third set of one or more capacitively coupled electrodes;a third substrate configured to hold the third set of one or more electrodes against the subject's body so that the third set of one or more electrodes partially surrounds the second side of the limb at a position that is proximal to the target region;a fourth set of one or more capacitively coupled electrodes; ...

SYSTEMS AND METHODS FOR CONTROLLING POWER IN AN ELECTROSURGICAL GENERATOR

The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve. 119-. (canceled)20. An electrosurgical forceps , comprising:an end effector including a first jaw member and a second jaw member, each having an electrically-conductive sealing plate, at least one of the first or second jaw members configured to move relative to the other of the first or second jaw members from an open position to a closed position to grasp tissue between the electrically-conductive sealing plates; andan identification module configured to store power curve data including a nonlinear power curve is a non-linear third-order polynomial defined by a plurality of coefficients.21. The electrosurgical forceps according to claim 20 , wherein the identification module is readable by an electrosurgical generator configured to supply electrosurgical energy based on the power curve data.22. The electrosurgical forceps according to claim 20 , wherein the identification module is further configured to store impedance data pertaining to the end effector.23. The electrosurgical forceps according to claim 22 , wherein the impedance data includes at least one of: an ...

Cutting mechanisms for surgical end effector assemblies, instruments, and systems

An end effector assembly for a surgical instrument includes first and second jaw members each including a jaw housing, an electrically-conductive tissue-treatment plate, and a longitudinally-extending channel. The first and/or second jaw member is movable relative to the other between a spaced-apart position and an approximated position. A cutting mechanism is disposed at least partially within the second jaw member. The cutting mechanism may include an inflatable bladder, a fluid line coupled to the inflatable bladder, and a knife coupled to the inflatable bladder. The cutting mechanism may alternatively include a fluid line, a knife, and a sealing member that defines a variable-volume sealed chamber within the longitudinally-extending channel of the second jaw member. The cutting mechanism may alternatively include at least one electromagnet, at least one electrical wire coupled to the at least one electromagnet, and a knife operably coupled to the at least one electromagnet.

SIMPLIFIED SPRING-LOADED MECHANISM FOR DELIVERING SHAFT FORCE OF A SURGICAL INSTRUMENT

A connection mechanism and manufacturing method for a surgical instrument includes an inner shaft member that extends at least partially through an elongated shaft member of the instrument and defines proximal and distal ends and is selectively movable in a longitudinal direction with respect to the elongated shaft member and includes at least one aperture that extends partially along the longitudinal direction and disposed distally from the proximal end. The inner shaft member enables a drive collar member to slide on the inner shaft member and reciprocate along the longitudinal direction. A drive collar stop member slides on the inner shaft member and moves along the longitudinal direction. The drive collar stop member then moves in a direction relative to the longitudinal axis to engage the aperture and limit further longitudinal motion of the drive collar member. An inner shaft stop member limits movement of the inner shaft. 120-. (canceled)21. A method of assembling a surgical instrument , comprising:inserting a knife into a knife guide;positioning a pair of flags of a first jaw member with a pair of flags of a second jaw member in an offset configuration;operably coupling the first and second jaw members to the knife guide;positioning the knife and the knife guide into an inner shaft;moving a drive collar stop along the inner shaft;engaging the drive collar stop within at least one aperture defined in the inner shaft to limit movement of the drive collar stop along the inner shaft; andmoving a drive collar along the inner shaft to abut the drive collar stop and limit distal movement of the drive collar along the inner shaft.22. The method according to claim 21 , further comprising engaging the knife guide to the inner shaft.23. A method of assembling a surgical instrument claim 21 , comprising:inserting a knife into a knife guide;positioning a pair of flags of a first jaw member with a pair of flags of a second jaw member in an offset configuration;operably ...

SIMPLIFIED SPRING-LOADED MECHANISM FOR DELIVERING SHAFT FORCE OF A SURGICAL INSTRUMENT

A connection mechanism and manufacturing method for a surgical instrument includes an inner shaft member that extends at least partially through an elongated shaft member of the instrument and defines proximal and distal ends and is selectively movable in a longitudinal direction with respect to the elongated shaft member and includes at least one aperture that extends partially along the longitudinal direction and disposed distally from the proximal end. The inner shaft member enables a drive collar member to slide on the inner shaft member and reciprocate along the longitudinal direction. A drive collar stop member slides on the inner shaft member and moves along the longitudinal direction. The drive collar stop member then moves in a direction relative to the longitudinal axis to engage the aperture and limit further longitudinal motion of the drive collar member. An inner shaft stop member limits movement of the inner shaft. 120-. (canceled)21. A method of assembling a surgical instrument , comprising:positioning a knife within an inner shaft;moving a drive collar stop along the inner shaft;engaging the drive collar stop within at least one aperture defined in the inner shaft to limit movement of the drive collar stop along the inner shaft; andmoving a drive collar along the inner shaft to abut the drive collar stop and limit distal movement of the drive collar along the inner shaft.22. The method according to claim 21 , wherein positioning the knife within the inner shaft includes:inserting the knife into a knife guide; andpositioning the knife and the knife guide within the inner shaft.23. The method according to claim 22 , further comprising engaging the knife guide to the inner shaft.24. A method of assembling a surgical instrument claim 22 , comprising:inserting a knife into a knife guide;positioning the knife and the knife guide within an inner shaft;moving a drive collar stop along the inner shaft;engaging the drive collar stop within at least one ...

Detachable motor powered surgical instrument

A detachable motor-powered surgical instrument. The instrument may include a housing that includes at least one engagement member for removably attaching the housing to an actuator arrangement. A motor is supported within the housing for supplying actuation motions to various portions of a surgical end effector coupled to the housing. The housing may include a contact arrangement that is configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement.

DETACHABLE MOTOR POWERED SURGICAL INSTRUMENT

A detachable motor-powered surgical instrument. The instrument may include a housing that includes at least one engagement member for removably attaching the housing to an actuator arrangement. A motor is supported within the housing for supplying actuation motions to various portions of a surgical end effector coupled to the housing. The housing may include a contact arrangement that is configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement. 1. A surgical cutting and stapling instrument comprising:a housing including at least one engagement member for removably coupling the housing to an actuator arrangement;first and second jaws operably coupled to the housing such that at least one said jaw is selectively movable relative to the other said jaw;an axial drive assembly movably supported for selective axial travel relative to said first and second jaws;a motor supported by said housing and operably interfacing with the axial drive assembly to selectively move said axial drive assembly between a starting position and an ending position relative to the first and second jaws; anda contact arrangement supported by said housing and configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement.2. The surgical cutting and stapling instrument of wherein one of the first and second jaws operably supports a fastener cartridge.3. The surgical cutting and stapling instrument of wherein the actuator arrangement comprises a portion of a handheld surgical instrument.4. The surgical cutting and stapling instrument of wherein said axial drive assembly comprises:a drive beam operably coupled to said motor; anda tissue cutting edge on said drive beam.5. The surgical cutting and stapling instrument of wherein one of said first and second jaws comprises means for fastening tissue on each side of a cut line formed therein by a portion of the axial drive ...

DETACHABLE MOTOR POWERED SURGICAL INSTRUMENT

A detachable motor-powered surgical instrument. The instrument may include a housing that includes at least one engagement member for removably attaching the housing to an actuator arrangement. A motor is supported within the housing for supplying actuation motions to various portions of a surgical end effector coupled to the housing. The housing may include a contact arrangement that is configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement. 1. A surgical cutting and stapling instrument comprising:a housing including at least one engagement member for removably coupling the housing to an actuator arrangement;first and second jaws operably coupled to the housing such that at least one said jaw is selectively movable relative to the other said jaw;an axial drive assembly movably supported for selective axial travel relative to said first and second jaws;a motor supported by said housing and operably interfacing with the axial drive assembly to selectively move said axial drive assembly between a starting position and an ending position relative to the first and second jaws; anda contact arrangement supported by said housing and configured to permit power to be supplied to the motor only when the housing is operably attached to the actuator arrangement.2. The surgical cutting and stapling instrument of wherein one of the first and second jaws operably supports a fastener cartridge.3. The surgical cutting and stapling instrument of wherein the actuator arrangement comprises a portion of a handheld surgical instrument.4. The surgical cutting and stapling instrument of wherein said axial drive assembly comprises:a drive beam operably coupled to said motor; anda tissue cutting edge on said drive beam.5. The surgical cutting and stapling instrument of wherein one of said first and second jaws comprises means for fastening tissue on each side of a cut line formed therein by a portion of the axial drive ...

ROBOTIC SURGICAL ASSEMBLIES AND ELECTROSURGICAL INSTRUMENTS THEREOF

An actuation mechanism for actuating an electrosurgical end effector includes a housing and a shaft assembly extending distally from the housing. The shaft assembly includes an elongate collar, a shaft extending through the elongate collar, and a longitudinal bar axially movable relative to the shaft. The elongate collar has an internal threadform extending along a length thereof. The longitudinal bar includes a proximal end having an extension engaged to the internal threadform of the elongate collar and a distal end configured to be coupled to a knife blade of an electrosurgical end effector. Rotation of the elongate collar axially moves the longitudinal bar relative to the elongate collar to move the knife blade. 1. An actuation mechanism for actuating an electrosurgical end effector , comprising:a housing; and an elongate collar having an internal threadform extending along a length thereof;', 'a shaft extending through the elongate collar and having a proximal end and a distal end configured to effectuate movement of a jaw member of an electrosurgical end effector upon axial movement of the shaft relative to the housing; and', a proximal end having an extension engaged to the internal threadform of the elongate collar; and', 'a distal end configured to be coupled to a knife blade of an electrosurgical end effector;', 'wherein rotation of the elongate collar axially moves the longitudinal bar relative to the elongate collar to move the knife blade., 'a longitudinal bar axially movable relative to the shaft and including], 'a shaft assembly extending distally from the housing, the shaft assembly including2. The actuation mechanism according to claim 1 , wherein the housing includes:a first drive member operatively coupled to the elongate collar such that rotation of the first drive member rotates the elongate collar relative to the housing; anda second drive member operatively coupled to the proximal end of the shaft such that rotation of the second drive member ...

METHOD OF MANUFACTURING TISSUE SEALING ELECTRODES

An electrode assembly for use with an electrosurgical instrument includes a pair of opposing jaw members and an electrode positioned on each jaw member. One or both of the electrodes includes a tissue contacting surface that has an outer periphery and defines a side surface depending therefrom. The tissue contacting surface and the side surface include a conjoining edge formed at a first predetermined angle that defines a first linear transition zone dimensioned to reduce arcing between the opposing jaw members during activation of the electrosurgical instrument. 118-. (canceled)19. An electrode for use in an electrosurgical instrument , the electrode comprising:a tissue-contacting surface;a pair of opposing lateral side surfaces; and a first easement portion having a radius of curvature and extending laterally from the tissue-contacting surface toward the first lateral side surface; and', 'a second easement portion extending between the first easement portion and the first lateral side surface., 'an easement interconnecting the tissue-contacting surface and a first lateral side surface of the pair of opposing lateral side surfaces, the easement including20. The electrode of claim 19 , wherein the first easement portion is disposed between the tissue-contacting surface and the second easement portion.21. The electrode of claim 19 , wherein the first lateral side surface extends linearly along a vertical axis from the second easement portion.22. The electrode of claim 19 , wherein each of the first and second easement portions is convex.23. The electrode of claim 22 , wherein the second easement portion has a radius of curvature that is different than the radius of curvature of the first easement portion24. The electrode of claim 19 , wherein the first easement portion has a first end extending from the tissue-contacting surface and a second end claim 19 , the second easement portion having a first end extending from the second end of the first easement portion and a ...

Methods, Systems, and Devices Relating to Surgical End Effectors

The embodiments disclosed herein relate to various medical device components, including components that can be incorporated into robotic and/or in vivo medical devices, and more specifically including end effectors that can be incorporated into such devices. Certain end effector embodiments include various vessel cautery devices that have rotational movement as well as cautery and cutting functions while maintaining a relatively compact structure. Other end effector embodiments include various end effector devices that have more than one end effector. 1. (canceled)2. An end effector for an in vivo device , the end effector comprising:(a) an actuator housing comprising at least one actuator, wherein the actuator housing is operably coupleable to an arm of an in vivo robotic device, wherein the arm and the actuator housing are configured to be positioned entirely within a cavity of a patient; and (i) a first end effector rotationally coupled to the end effector housing such that the first end effector is rotatable in relation to the end effector housing around a first axis parallel to a longitudinal axis of the actuator housing; and', '(ii) a second end effector rotationally coupled to the end effector housing such that the second end effector is rotatable in relation to the end effector housing around a second axis parallel to the longitudinal axis of the actuator housing., '(b) an end effector housing operably coupled to the actuator housing, the end effector housing comprising3. The end effector of claim 2 , wherein the first end effector is a cautery component and the second end effector is a grasper.4. The end effector of claim 2 , further comprising:(a) a first end effector rotational gear operably coupled to the first end effector; and(b) a second end effector rotational gear operably coupled to the second end effector.5. The end effector of claim 4 , further comprising a rotational drive gear operably coupled to the first and second end effector rotational ...

TREATMENT SYSTEM, AND TREATMENT METHOD FOR LIVING TISSUE USING ENERGY

A treatment system includes a pair of holding members, a high-frequency energy output section, a heat generating section and a control section. At least one of the pair of holding members moves to the other holding member. The high-frequency energy output section and the heat generating section are provided on at least one of the holding members. The high-frequency energy output section exerts high-frequency energy to a living tissue to denature the living tissue, and collects the biological information of the living tissue. The heat generating section applies heat to it held between the holding members, generates the heat owing to the supply of the energy, and conducts the heat therefrom to denature the living tissue. The control section controls the output of the energy to the high-frequency energy output section and the heat generating section based on the biological information collected by the high-frequency energy output section. 1. A surgical controller for controlling an electrosurgical apparatus , the surgical controller comprising:a circuit configured to detect an impedance of a tissue between a pair of holding members disposed at the electrosurgical apparatus and to output an impedance value indicative of the impedance; and controlling a first generator to apply a first electric power to a first energy element that is provided on each of the holding members and is configured to apply a first energy to the tissue, the first energy generating Joule heat in the tissue to heat the tissue;', 'receiving the impedance value from the circuit;', 'when the impedance value reaches a first threshold value, controlling a second generator to set a second electric power to be applied to a second energy element to a value higher than before reaching the first threshold value, the second energy element being configured to apply a second energy to the tissue, the second energy coagulating the tissue from a surface side of the tissue contacting a grasping face of the ...

Low Power Tissue Sealing Device and Method

An electrosurgical instrument has a power supply operatively coupled to an end effector. The end effector has a pair of jaws for effectuating an action on tissue positioned therebetween. The power supply is configured to input a first signal and a second signal to a buck-boost converter. The buck-boost converter is configured to transmit an output to an H-bridge circuit. The H-bridge circuit is configured to pass a signal to a resonant LC transformer circuit. The power supply is configured to transmit a power signal. The pair of jaws are operatively coupled to the power supply to receive the power signal, the power having no more than 80 Volts RMS, and less than 2 Amps RMS. The power is configured to seal the tissue positioned between the pair of jaws in 3 seconds or less. 1. An electrosurgical instrument , comprising:a power supply operatively coupled to an end effector,the end effector having a pair of jaws for effectuating an action on tissue positioned therebetween,the power supply configured to input a first signal and a second signal to a buck-boost converter, the buck-boost converter configured to transmit an output to an H-bridge circuit, the H-bridge circuit configured to pass a signal to a resonant LC transformer circuit, the power supply configured to transmit a power signal; andthe pair of jaws operatively coupled to the power supply to receive the power signal, the power having no more than 80 Volts RMS, and less than 2 Amps RMS, the power configured to seal the tissue positioned between the pair of jaws in 3 seconds or less.2. The instrument of claim 1 , wherein:the pair of jaws are configured to compress the tissue to a thickness of 0.005 inches or less.3. The instrument of claim 1 , wherein:the resonant LC transformer circuit comprises includes a capacitor, an inductor, and a transformer, wherein the transformer is a 1:9 transformer.4. The instrument of claim 1 , wherein:the power has 1.5 Amps or less.5. The instrument of claim 1 , wherein:the pair ...

BIPOLAR ELECTROSURGICAL SEALER AND DIVIDER

An electrosurgical instrument is provided that captures, compresses, fuses and cuts tissue between upper and lower jaws connected to pivotably movable handles. The instrument includes a force and over compression regulation mechanism that is configured such that in a clamped configuration, the jaws delivers a gripping force between the first jaw and the second jaw between a predetermined minimum force and a predetermined maximum force. 1. An electrosurgical instrument comprising:a lower handle comprising a support arm and a support spring connected to the support arm;an upper jaw connected to and extending from the lower handle, the upper jaw having at least one electrode and a blade channel;an upper handle comprising a blade trigger connected to the upper handle and a blade slider translatable longitudinally through the blade channel in the upper jaw and a blade lock hook connected to the blade trigger preventing distal movement of the blade trigger and the blade slider; anda lower jaw connected to and extending from the upper handle, the lower and upper handles being movable from a spaced position to a proximate position and the support spring being uncompressed when the upper and lower handles are in the proximate position;wherein the support spring is compressed and supplies a predetermined force to the upper and lower jaws through the support arm when RF energy is supplied to the at least one electrode and the blade lock hook is disconnected from the blade trigger permitting distal movement of the blade trigger and the blade slider.2. The instrument of wherein the upper handle further comprises a blade lever arm connected to the blade trigger and the blade slider in which movement of the blade trigger moves the blade lever arm which moves the blade slider.3. The instrument of further comprises a blade spring connected to the blade trigger claim 2 , the blade spring biasing the blade trigger proximally in which the blade trigger moving proximally moves the blade ...

Electrosurgical instrument with trigger driven cutting function

An electrosurgical instrument ( 1 ) includes a first shaft member ( 110 ) pivotably coupled to a second shaft member ( 120 ), and a trigger ( 184 ) disposed on the second shaft member ( 120 ). The first and second shaft members ( 110,120 ) respectively include first and second handle members ( 130,140 ), and first and second jaw members ( 150,160 ). The first and second shaft members ( 110,120 ) define a longitudinal axis extending through a pivot, and first and second pivot axes that are substantially orthogonal to each other and the longitudinal axis. At least one of the first or second handle members ( 130,140 ) is pivotable about the first pivot axis to move the first and second jaw members ( 150,160 ) to an open position, a grasping position, or a sealing position. The trigger ( 184 ) is movable to pivot at least one of the first or second shaft members ( 110,120 ) about the second pivot axis to laterally displace the first and second jaw members ( 150,160 ) relative to each other to a cutting position.

BATTERY OPERATED TISSUE CORING DEVICE

A surgical instrument comprises an end effector configured to core tissue, a handle operatively coupled to the end effector, wherein the handle comprises a trigger to actuate the end effector, the handle comprising a battery dock, the battery dock comprising a protruding member; and a battery unit attachable to the battery dock, wherein the battery unit is in electrical contact with at least one of the handle and the end effector when attached to the battery dock. 1. A surgical instrument comprising: a first clamping element comprising a helical coil;', 'a second clamping element, the second clamping element being positioned to oppose at least a portion of the first clamping element;', 'a first and second electrode configured for delivery of radiofrequency energy for sealing tissue; and', 'a cutting element configured for transection of at least a portion of the sealed tissue;, 'an end effector comprisinga handle operatively coupled to the end effector, wherein the handle comprises a trigger to actuate the end effector, the handle comprising a battery dock;the battery dock comprising a protruding member; and a casing;', 'an anode and a cathode positioned within the casing; and', 'a translatable discharge drain, wherein, upon attachment of the battery unit to the battery dock, the protruding member contacts the discharge drain and the discharge drain translates with respect to casing to electrically couple the anode of the battery unit to the cathode of the battery unit., 'a battery unit attachable to the battery dock, wherein the battery unit is in electrical contact with at least one of the handle and the end effector when attached to the battery dock, and wherein the battery unit comprises2. The surgical instrument of claim 1 , wherein the discharge drain comprises a first contact and a second contact claim 1 , and at least one resistive element electrically coupled to the first and second contact claim 1 , wherein claim 1 , upon attachment of the battery unit to ...

Apparatus and Method for Rapid Reliable Electrothermal Tissue Fusion

A method of electrothermally fusing together pieces of tissue at an interface includes: compressing the tissue pieces together at the interface sufficiently for fusing the tissue pieces together at the interface; delivering an impulse of electrical power of no greater than 4.0 seconds time duration which contains sufficient energy to fuse the tissue pieces together at the interface within the time duration of the electrical power impulse; converting the electrical power impulse into thermal energy applied at the interface to fuse the tissue pieces; and regulating the temperature of the thermal energy applied at the interface in a range of 150° C. to 200° C. while fusing the tissue pieces by controlling characteristics of the electrical power impulse. 1. A method of electrothermally fusing together pieces of tissue at an interface , comprising:compressing the tissue pieces together at the interface sufficiently for fusing the tissue pieces together at the interface;delivering an impulse of electrical power of no greater than 4.0 seconds time duration which contains sufficient energy to fuse the tissue pieces together at the interface within the time duration of the electrical power impulse;converting the electrical power impulse into thermal energy applied at the interface to fuse the tissue pieces; andregulating the temperature of the thermal energy applied at the interface in a range of 150° C. to 200° C. while fusing the tissue pieces by controlling characteristics of the electrical power impulse.2. A method as defined in claim 1 , wherein the electrical power impulse has a time duration of no greater than 2.0 seconds.3. A method as defined in claim 1 , wherein the electrical power impulse has a time duration of approximately 0.5 seconds.4. A method as defined in claim 1 , wherein the electrical power impulse has a time duration in the range of 0.5 seconds to 2.0 seconds.5. A method as defined in claim 4 , further comprising:releasing compression of the interface ...

DEVICES AND METHODS FOR TISSUE SEALING AND MECHANICAL CLIPPING

A tissue clip including an electrode assembly having first and second electrodes with an insulator disposed therebetween. The electrodes are configured to connect to opposite potentials of an energy source. The electrodes and insulator are deformable to shape the tissue clip to include upper and lower legs with a twisted central portion defined therebetween. The upper leg includes an outer facing portion having one end of the first electrode removably coupled to a first jaw of a forceps and an inner facing portion including an end of the second electrode configured to grasp tissue. The lower leg includes an outer facing portion having an opposite end of the second electrode removably coupled to a second jaw and an inner facing portion that includes the opposite end of the first electrode and is configured to grasp tissue. 1. A tissue clip , comprising:an electrode assembly including elongated first and second electrodes having an insulator disposed therebetween, the first electrode configured to connect to a first potential of an electrosurgical energy source and the second electrode configured to connect to a second potential of the energy source, the electrodes and insulator deformable to shape the tissue clip including upper and lower legs and a twisted central portion defined therebetween,wherein the upper leg includes an outer facing portion having one end of the first electrode configured to removably and electrically couple to a first jaw member of a forceps and an inner facing portion including an end of the second electrode configured to grasp tissue, the lower leg including an outer facing portion having an opposite end of the second electrode configured to removably and electrically couple to a second, opposing jaw member of the forceps and an inner facing portion including the opposite end of the first electrode configured to grasp tissue.2. A tissue clip according to wherein the first and second electrodes are made from a malleable metal.3. A tissue ...

ELECTROSURGICAL SHEARS WITH THUMB RING KNIFE ACTUATOR

A surgical instrument includes an end effector, a handle assembly, and a firing assembly. The end effector includes a first jaw, a second jaw, a knife, and an electrode assembly. The second jaw pivot between an open position and a closed position. The handle assembly includes a housing associated with the first jaw and an arm associated with the second jaw. The arm can pivot the second jaw between the open position and the closed position. The firing assembly can actuate the knife between a pre-fired position and a fired position. The firing assembly includes a first body slidably attached to the housing and a second body slidably attached to the arm. The second body couples with the first body when the second jaw is in the closed position. The second body decouples with the first body when the second jaw is in the open position. 1. A surgical instrument comprising: (i) a first jaw,', '(ii) a second jaw pivotably coupled with the first jaw, wherein the second jaw is operable to move between an open position and a closed position,', '(iii) a knife configured to actuate between a pre-fired position and a fired position, and', '(iv) an electrode assembly configured to apply RF energy to tissue;, '(a) an end effector, wherein the end effector comprises (i) a housing associated with the first jaw, and', '(ii) an arm associated with the second jaw, wherein the arm is configured to pivot the second jaw between the open position and the closed position; and, '(b) a handle assembly, wherein the handle assembly comprises (i) a first body coupled with the knife, wherein the first body is slidably attached to the housing, and', '(ii) a second body slidably attached to the arm, wherein the second body is configured to couple with the first body when the second jaw is in the closed position, wherein the second body is configured to decouple with the first body when the second jaw is in the open position., '(c) a firing assembly configured to actuate the knife between the pre- ...

Smart Surgical Laser Tissue Sealing And Cutting Apparatus With Optical Fiber Guided Sensors

Embodiments of an apparatus and method for sealing and cutting of tissue during surgeries, especially in general, endoscopic, laparoscopic and robotic, are described. In one aspect, an apparatus comprises a laser system and a laser beam delivery unit. The laser unit is configured to emit a laser beam suitable for tissue sealing and cutting. The laser beam delivery unit is detachably coupled to the laser unit, and is configured to guide and direct the laser beam to seal and cut tissue. Use of optical fiber guided sensors described herein further enhances the safety and efficacy of the apparatus. 1. An apparatus , comprising:a laser system configured to emit one or more laser beams suitable for sealing and cutting a tissue; anda laser beam delivery unit detachably coupled to the laser system, the laser beam delivery unit configured to guide and direct the one or more laser beams to seal and cut the tissue.2. The apparatus of claim 1 , wherein the laser beam delivery unit is configured for single use and is disposable.3. The apparatus of claim 1 , wherein the laser system comprises a single laser source with a mechanically or optically switchable mechanism to deliver the laser beam to different optical fibers to perform tissue cutting and sealing.4. The apparatus of claim 1 , wherein the laser system comprises two laser sources that provide a first laser beam to a first optical fiber for sealing and a second laser beam to a second optical fiber for cutting.5. The apparatus of claim 4 , wherein the laser sources comprise a Nd:YAG or diode pumped laser to provide the first laser beam for tissue sealing.6. The apparatus of claim 4 , wherein the laser sources comprise a Nd:YAG claim 4 , Er:YAG claim 4 , Ho:YAG or diode pumped laser to provide the second laser beam for tissue cutting.7. The apparatus of claim 4 , wherein the laser sources operate in a power range between 20 watts and 120 watts.8. The apparatus of claim 1 , wherein the laser system is configured to perform ...

Vessel sealing instrument

A bipolar electrosurgical instrument is provided. The bipolar electrosurgical instrument includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another. A first conductive lead is adapted to connect to a first electrical potential and a second conductive lead is adapted to connect to a second electrical potential. One of the first and second conductive leads extends through the pivot to connect to a respective jaw member.

Medical treatment instrument

Provided is a medical treatment instrument including: a pair of openable/closable pinching portions that pinch a body tissue via a pair of pinching surfaces facing each other; an energy output section provided in at least one of the pair of pinching portions, the energy output section including an energy application surface as at least one of the pair of pinching surfaces; a cutting member capable of advancing/retracting inside the pinching portion; a guiding groove including a recess portion in the energy application surface, the guiding groove guiding the cutting member; and a plurality of gap maintaining portions provided at a fixed interval along an axial direction at an end face of the guiding groove in such a manner that the end face on the guiding groove side and an inner face on the energy output section side are flush with each other.

APPARATUS, SYSTEM AND METHOD FOR PERFORMING AN ELECTROSURGICAL PROCEDURE

A forceps is provided. The forceps includes a housing having a shaft that extends therefrom. The bipolar forceps also includes a hydraulic mechanism that includes a fluid line and a plunger operatively coupled to the fluid line. The plunger is translatable within at least a portion of the shaft from a proximal position to a distal position. An end effector assembly is operatively connected to a distal end of the shaft and includes a pair of first and second jaw members biased in an open configuration. Each of the first and second jaw members configured to receive at least a portion of the plunger when a fluid is caused to flow within the fluid line such that the first and second jaw members move from an open position for positioning to a closed position for grasping tissue. 112-. (canceled)13. A forceps comprising:a housing;a shaft extending distally from the housing and defining a longitudinal axis;a first plunger disposed within the shaft;a hydraulic mechanism operatively associated with the first plunger and configured to translate the first plunger along the longitudinal axis; andan end effector assembly positioned at a distal end of the shaft and including first and second jaw members moveable relative to one another between an open configuration and a clamped configuration, each of the jaw members defining an aperture configured to receive a portion of the first plunger when the first plunger is translated distally to move the first and second jaw members towards the clamped configuration.14. The forceps according to claim 13 , further comprising a second plunger operatively associated with the hydraulic mechanism claim 13 , the hydraulic mechanism configured to translate the second plunger along the longitudinal axis.15. The forceps according to claim 14 , wherein the second plunger is configured to selectively engage at least one of the first and second jaw members to sever tissue clamped between the first and second jaw members when the first and second jaw ...

ELECTROSURGICAL ULTRASONIC VESSEL SEALING AND DISSECTING SYSTEM

An ultrasonic motion generator includes a non-resonant inverter, an ultrasonic transducer, and a comparator. The non-resonant inverter inverts direct current (DC) to alternating current (AC) having a first frequency. The ultrasonic transducer is electrically coupled with the non-resonant inverter and generates an ultrasonic motion based on the inverted AC. The comparator automatically detects a deviation of the first frequency from a resonant frequency of the ultrasonic transducer based on motion current passing through the ultrasonic transducer and generates an output signal based on the deviation to drive the non-resonant inverter. 1. An ultrasonic motion generator comprising:a non-resonant inverter configured to invert direct current (DC) to alternating current (AC) having a first frequency;an ultrasonic transducer electrically coupled with the non-resonant inverter and configured to generate an ultrasonic motion based on the inverted AC; anda comparator configured to automatically detect a deviation of the first frequency from a resonant frequency of the ultrasonic transducer based on motion current passing through the ultrasonic transducer and to generate an output signal based on the deviation to drive the non-resonant inverter.2. The ultrasonic motion generator according to claim 1 , wherein a longitudinal displacement of the ultrasonic motion is based on a load operably connected to the ultrasonic motion generator.3. The ultrasonic motion generator according to claim 1 , wherein the ultrasonic transducer is modeled as a band-pass filter including a resistor claim 1 , a capacitor claim 1 , and an inductor connected in series.5. The ultrasonic motion generator according to claim 3 , wherein claim 3 , in a frequency domain claim 3 , a magnitude of a product of a gain of the comparator and a gain of the band-pass filter is substantially equal to one.6. The ultrasonic motion generator according to claim 5 , wherein claim 5 , in the frequency domain claim 5 , a ...

SURGICAL INSTRUMENT AND METHOD

An actuator for use in a surgical instrument, the actuator includes an upper portion configured to be actuated by one or more fingers, wherein the upper portion has an upper distal portion for operating the surgical instrument in a first mode of operation, and an upper proximal portion for operating the surgical instrument in a second mode of operation, and wherein the upper distal portion and the upper proximal portion have different respective tactile configurations for informing the user of the first and second modes of operation, respectively. 118-. (canceled)19. A surgical instrument for harvesting a vessel , comprising:an elongated body having a distal end and a proximal end;an electrical circuit;a surgical device at the distal end of the body, wherein the surgical device comprises an electrode coupled to the electrical circuit; anda handle coupled to the proximal end of the elongated body;wherein the electrical circuit has a first wire and a second wire that are parts of a circuit coupled to the electrode, the second wire being a backup wire.20. The surgical instrument of claim 19 , wherein the first and second wires are electrically connected to the electrode claim 19 , the second wire being a backup wire for supplying energy to the electrode.21. The surgical instrument of claim 19 , further comprising a fuse that couples to the electrode claim 19 , wherein the first wire and the second wire are electrically coupled to the fuse claim 19 , the second wire being a backup wire for supplying energy to the fuse.22. The surgical instrument of claim 19 , further comprising an electrical switch within the handle claim 19 , wherein the first wire and the second wire are electrically coupled to a switch terminal at the electrical switch claim 19 , the second wire being a backup wire for supplying energy to the switch terminal.2353-. (canceled) This application is a continuation-in-part of U.S. patent application Ser. No. 12/472,657, filed on May 27, 2009, pending, ...

BIPOLAR FORCEPS WITH VESSEL SEAL TESTING

A forceps system for sealing a blood vessel can include a first jaw and an opposing second jaw. At least one of the first and second jaws includes at least a first electrode having first and second electrode portions that are laterally separated to permit electrical isolation between the first and second electrode portions, and the first and second electrode portions are independently addressable to permit individual testing by the first and second electrodes portions of a blood vessel characteristic. This can help permit individual testing of each side of a target seal region of the blood vessel. 1. A forceps system for sealing a vessel , the forceps system comprising:a forceps including first jaw and an opposing second jaw,wherein at least one of the first and second jaws includes at least a first electrode having first and second electrode portions that are laterally separated to permit electrical isolation between the first and second electrode portions, andwherein the first and second electrode portions are independently addressable to permit individual testing by the first and second electrodes portions of a vessel characteristic.2. The forceps system of claim 1 , comprising a slot between at least a portion of the laterally separated first and second electrode portions.3. The forceps system of claim 2 , further comprising a retractable blade extendable in the slot between the first electrode portion and the second electrode portion.4. The forceps of claim 2 , wherein the first electrode portion and the second electrode portion are laterally separated by the slot.5. The forceps of claim 2 , wherein the first electrode portion and the second electrode portion each extend from between a distal portion and a proximal portion of the first jaw.6. The forceps system of claim 1 , wherein the other of the first and second jaws includes a second electrode.7. The forceps of claim 6 , wherein the first and second electrodes comprise a first plate electrode and a second ...

ARTICULATING BLADE DEPLOYMENT

An end effector for a wristed surgical instrument includes a first jaw member, a second jaw member coupled to the first jaw member by a pivot pin, an actuation string, and a blade supported between the first and second jaw members. The first and second jaw members are positioned to pivot and articulate about a pivot axis defined by the pivot pin. The blade is secured to the actuation string and movable relative to the first and second jaw members to sever tissue clamped between the first and second jaw members in response to actuation of the actuation string. 1. An end effector for a wristed surgical instrument , the end effector comprising:a first jaw member;a second jaw member coupled to the first jaw member by a pivot pin, the first and second jaw members positioned to pivot and articulate about a pivot axis defined by the pivot pin;an actuation string; anda blade supported between the first and second jaw members and secured to the actuation string, the blade movable relative to the first and second jaw members to sever tissue clamped between the first and second jaw members in response to actuation of the actuation string.2. The end effector of claim 1 , wherein the blade includes a cam plate and the actuation string is secured to the cam plate.3. The end effector of claim 2 , wherein the actuation string is routed through the cam plate of the blade.4. The end effector of claim 2 , wherein the second jaw member includes a cam plate and the pivot pin is positioned through the cam plates of the blade and the second jaw member.5. The end effector of claim 4 , wherein the cam plate of the second jaw member includes a ramp claim 4 , the cam plate of the blade positioned to move along the ramp.6. The end effector of claim 5 , wherein the cam plate of blade defines a ramp slot that receives the ramp of the second jaw member.7. The end effector of claim 6 , wherein the blade is positioned to move vertically and axially relative to the second jaw member as the cam plate ...

Surgical Devices Having Controlled Tissue Cutting and Sealing

Various surgical devices and methods are provided for monitoring and regulating tissue compression and cutting to improve tissue effect. In general, these devices include a handle portion, an elongate shaft, and an effector disposed at a distal end of the shaft and configured to engage tissue. In one embodiment, one or more sensors can be positioned at various locations on the device and can determine a force applied to tissue engaged by the end effector. When the force exceeds a threshold, a notification signal can be issued to a user. In another embodiment, a sensor can determine an amount of current moving between jaws of the end effector and a controller can slow a speed of the cutting element when the sensed current exceeds a threshold amount. 1. A surgical device , comprising:a proximal handle portion;an elongate shaft extending distally from the proximal handle portion;an end effector having first and second jaws coupled to a distal end of the elongate shaft, the first jaw including a first electrode element, and the second jaw including a second electrode element;an actuator configured to be actuated by a user and thereby cause a motor to provide power to move a cutting element at a speed along the end effector to cut tissue engaged between the first and second jaws;a sensor configured to sense current moving between the first and second electrode elements during the movement of the cutting element; anda controller configured to decrease the speed of the cutting element when the sensed current exceeds a threshold amount such that the cutting element continues moving along the end effector at a slower speed.2. The device of claim 1 , wherein the controller is configured to decrease the speed of the cutting element by causing a speed of the motor to decrease.3. The device of claim 1 , wherein the actuator is configured to control opening and closing of the first and second jaws.4. The device of claim 1 , wherein the first and second electrodes are configured ...

Surgical instrument with user adaptable algorithms

Various forms are directed to systems and methods for dissection and coagulation of tissue. A surgical instrument includes an end effector configured to dissect and seal tissue at a distal end thereof, and a selector switch having a plurality of surgical modes. A generator is electrically coupled to the surgical instrument and is configured to deliver energy to the end effector. Each surgical mode of the selector switch corresponds to an algorithm for controlling the power delivered from the generator to the end effector, and each algorithm corresponding to the plurality of surgical modes is configured to allow a user to control the power output level of the generator.

Dermatological treatment device

The invention relates to a dermatological treatment device ( 1 ) including a laser head ( 2 ) capable of shooting a laser beam ( 3 ) towards a target region ( 4 ) of the skin ( 5 ) of a patient, a pyrometer ( 6 ) capable of measuring the temperature (T) of the skin ( 5 ) in said target region ( 4 ), a timer ( 7 ) capable of measuring the duration (D) of the laser shot, and a control means ( 8 ) capable of selectively activating or deactivating a laser shot, the control means ( 8 ) being configured to deactivate the laser shot when the duration (D) of the shot reaches a duration threshold in seconds (Sd) as determined by a linear function in the form Sd=(To−T)/C, where T is the measured temperature (T) of the skin, To is a target temperature, and C is an average heating coefficient of the skin.

Ultrasonic scalpel bit, ultrasonic vibration propagation assembly and ultrasonic hemostasis and cutting system

Disclosed is an ultrasonic hemostasis and cutting system, comprising an ultrasonic vibration propagation assembly. An ultrasonic scalpel bit ( 101 ) of the ultrasonic vibration propagation assembly comprises an ultrasonic scalpel tip ( 11 ), a connection portion ( 13 ), vibration node bosses ( 14 ) and a waveguide ( 15 ), wherein the ultrasonic scalpel tip ( 11 ) is arranged in front of the waveguide ( 15 ), the connection portion ( 13 ) is arranged behind the waveguide ( 15 ), the vibration node bosses ( 14 ) are arranged on the waveguide ( 15 ), the ultrasonic scalpel tip ( 11 ) is laterally bent at a pointed end thereof, and a vibration guide groove ( 12 ) is further provided on the ultrasonic scalpel bit ( 101 ). By designing the ultrasonic scalpel bit in a bent shape and converting a longitudinal ultrasonic vibration into a longitudinal torsional composite vibration, temperature uniformity inside a tissue being cut or coagulated can be improved, thereby improving the efficiency and safety of hemostasis and cutting.

Apparatus for treating cardiac arrhythmias utilizing a machine learning algorithm to optimize an ablation index calculation

A method is provided. The method includes receiving, by an optimization engine, inputs from previous ablation procedures. The method also includes training, by the optimization engine, a machine learning algorithm of the optimization engine to learn scenarios for the previous ablation procedures. The method also includes generating, by the optimization engine, ablation indices for the scenarios.

ARTICULATING SURGICAL STAPLING INSTRUMENT INCORPORATING A TWO-PIECE E-BEAM FIRING MECHANISM

A surgical severing and stapling instrument, suitable for laparoscopic and endoscopic clinical procedures, clamps tissue within an end effector of an elongate channel pivotally opposed by an anvil. An E-beam firing bar moves distally through the clamped end effector to sever tissue and to drive staples on each side of the cut. The E-beam firing bar affirmatively spaces the anvil from the elongate channel to assure properly formed closed staples, especially when an amount of tissue is clamped that is inadequate to space the end effector. In particular, an upper pin of the firing bar longitudinally moves through an anvil slot and a channel slot is captured between a lower cap and a middle pin of the firing bar to assure a minimum spacing. Forming the E-beam from a thickened distal portion and a thinned proximal strip enhances manufacturability and facilitates use in such articulating surgical instruments. 2. The surgical instrument of claim 1 , wherein the anvil forms a pivotal attachment to the elongate channel inwardly biased at respective distal ends to assist the firing device in affirmatively spacing between the anvil and elongate channel during actuation of the staple cartridge.3. The surgical instrument of claim 1 , wherein the staple cartridge is a selected type of a plurality of staple cartridge types claim 1 , each staple cartridge type characterized by a thickness selected for a desired spacing between the anvil and elongate channel and characterized by staples having a length suitable for the desired spacing.4. The surgical instrument of claim 3 , wherein the wedge member comprises a wedge sled having a plurality of connected camming wedges each having a preselected height configured for the selected type of staple cartridge claim 3 , the middle member of the firing device oriented to abut each of the plurality of staple cartridge types.5. A surgical instrument comprising:a handle portion operable to produce a firing motion and a closing motion; and a ...

ARTICULATING SURGICAL STAPLING INSTRUMENT INCORPORATING A TWO-PIECE E-BEAM FIRING MECHANISM

A surgical severing and stapling instrument, suitable for laparoscopic and endoscopic clinical procedures, clamps tissue within an end effector of an elongate channel pivotally opposed by an anvil. An E-beam firing bar moves distally through the clamped end effector to sever tissue and to drive staples on each side of the cut. The E-beam firing bar affirmatively spaces the anvil from the elongate channel to assure properly formed closed staples, especially when an amount of tissue is clamped that is inadequate to space the end effector. In particular, an upper pin of the firing bar longitudinally moves through an anvil slot and a channel slot is captured between a lower cap and a middle pin of the firing bar to assure a minimum spacing. Forming the E-beam from a thickened distal portion and a thinned proximal strip enhances manufacturability and facilitates use in such articulating surgical instruments. 1. A surgical instrument comprising:a handle portion operable to produce a firing motion; and 'an elongate channel coupled to the handle portion and including a channel slot,', 'an implement portion responsive to the firing motions from the handle portion, the implement portion comprising an anvil pivotally coupled to the elongate channel and including an anvil channel,', 'a firing device including a distally presented cutting edge longitudinally received between the elongate channel and the anvil, an upper member engageable to the anvil channel, a lower member engaging the channel slot, and a middle member operable to actuate the staple cartridge by distally translating the wedge member of the staple cartridge, the firing device positively engaging both the elongate channel and the anvil during longitudinal firing travel to provide spacing therebetween for staple formation,', 'an articulation joint proximally coupled to the elongate channel, and', 'a thinned firing strip proximally attached to the firing device for transferring the firing motion from the handle ...

Unitary Endoscopic Vessel Harvesting Devices

Unitary endoscopic vessel harvesting devices are disclosed. In some embodiments, such devices may comprise an elongated body having a proximal end and a distal end. A conical tip may be disposed at the distal end of the elongated body. In addition, the surgical instrument may include one or more surgical instruments moveable in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximally of a distal end of the tip to an advanced position toward the distal end of the tip to seal and cut a blood vessel. 1. A method for harvesting a blood vessel comprising:advancing a cannula having a conical dissection tip disposed at a distal tip of an elongated body along a main vessel to separate the main vessel and its branch vessels from the surrounding tissue;moving one or more surgical instruments in a longitudinal direction along an axis substantially parallel to a central longitudinal axis of the cannula from a retracted position proximal of a distal end of the tip to an advanced position toward the distal end of the tip;manipulating the one or more surgical instruments to seal and cut the branch vessel.2. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip is removable to expose the distal end of the elongated body.3. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip is retractable over the elongated body to expose the distal end of the elongated body.4. The method of claim 1 , wherein claim 1 , in the step of advancing claim 1 , the tip includes one or more optical windows.5. The method of claim 4 , wherein the cannula further comprises a cover moveable from a first position over the one or more optical windows to cover the one or more optical windows to a second position away from the one or more optical windows to expose the one or more optical windows.6. The method of claim 1 , wherein claim 1 , in the step of moving ...

Electrosurgical instrument including an adhesive applicator assembly

The surgical instrument for sealing and/or cutting tissue includes a handle assembly and an end effector assembly operatively connected to the handle assembly. The end effector assembly includes first and second jaw members each including a jaw housing and an electrically conductive surface defining a plurality of bores and an adhesive applicator assembly disposed in one of the jaw members. The electrically conductive surfaces are configured to effect a tissue seal. The adhesive applicator assembly includes a platform defining a reservoir therein and a plurality of needles in communication with the reservoir. The platform is movable between a neutral position in which the plurality of needles are disposed within the jaw housing and an actuated position in which the plurality of needles extend through the respective plurality of bores defined in the electrically conductive surface.

CORING AND AMPUTATION DEVICES, SYSTEMS, AND METHODS

A method for removing tissues may comprise disposing a tissue resection device at a target tissue site, causing the tissue resection device to resect a core of tissue from the target tissue site, removing the core of tissue from the body, wherein the removing the core of tissue from the body creates a core cavity at the target tissue site. 1. A tissue coring and amputating system comprising: a first clamping element comprising a helical coil,', 'a second clamping element, the second clamping element being positioned to oppose at least a portion of the first clamping element,', 'a first electrode and a second electrode configured for the delivery of radiofrequency energy to an area adjacent one or more of the first clamping element and the second clamping element to seal tissue, and', 'a cutting element configured for the transection of at least a portion of the sealed tissue to form a core of tissue; and, 'a coring device comprising 'a second cutting element configured for the amputation of at least the core of tissue.', 'an amputating device comprising2. A method of using the tissue coring and amputating system of claim 1 , the method comprising:disposing the coring device adjacent a target tissue site;rotating the helical coil into the target tissue site;causing the first clamping element and the second clamping element to clamp against each other;causing radiofrequency energy to energize one or more of the first electrode and the second electrode;causing the cutting element to core at least a portion of the target tissue site;removing the coring device and a core of tissue;disposing the amputation device adjacent the target tissue site; andcausing the amputation device to amputate at least a portion of the target tissue site.3. The tissue coring and amputating system of claim 1 , further comprising:a first actuator operable to actuate the first or second clamping element to apply mechanical compression to tissue; anda second actuator operable to actuate the ...

SURGICAL CUTTING AND FASTENING INSTRUMENT HAVING RF ELECTRODES

A surgical cutting and fastening instrument. The instrument comprises a handle and an end effector connected to the handle. The end effector comprises upper and lower opposing jaw members, wherein the upper jaw member comprises a plurality of co-linear, separately actuatable, RF electrodes. 1. A surgical cutting and fastening instrument comprising:a handle;an end effector connected to the handle comprising upper and lower opposing jaw members, wherein the upper jaw member comprises a plurality of co-linear, separately actuatable, RF electrodes.2. The surgical cutting and fastening instrument of claim 1 , wherein the handle is connected to the end effector by a shaft.3. The surgical cutting and fastening instrument of claim 1 , wherein the handle is connected to the end effector by a flexible cable.4. The surgical cutting and fastening instrument of claim 1 , further comprising:a RF source;a multiplexer having an input connected to the RF source and having a number of outputs, each output connected to one of the RF electrodes; anda controller connected to the multiplexer for controlling the multiplexer so that the RF electrodes are activated according to a sequence.5. The surgical cutting and fastening instrument of claim 1 , wherein the upper jaw member comprises a plurality of insulators claim 1 , each insulator insulating one of the RF electrodes from a metallic portion of the upper jaw member.6. The surgical cutting and fastening instrument of claim 5 , wherein the insulators comprise a ceramic material.7. The surgical cutting and fastening instrument of claim 6 , wherein the ceramic material insulators are sputter coated onto the upper jaw member.8. The surgical cutting and fastening instrument of claim 7 , wherein the RF electrodes are sputter coated onto the ceramic material insulators.9. The surgical cutting and fastening instrument of claim 8 , wherein the RF electrodes comprise silver.10. The surgical cutting and fastening instrument of claim 1 , wherein ...

Single action tissue sealer

An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.

MEDICAL INSTRUMENT

A jaw assembly that includes a first jaw and a second jaw. The first jaw includes a first outer jaw member having an effecting surface; a first inner jaw member having an effecting surface; and an element connecting the first outer jaw member and the first inner jaw member. The first inner jaw member is moveable relative to the first outer jaw member. The effecting surface of the first outer jaw member is proud of the effecting surface of the first inner jaw member in a direction of the second jaw. 1) A jaw assembly comprising:a first jaw comprising: a first outer jaw member having an effecting surface, a first inner jaw member having an effecting surface, and an element connecting the first outer jaw member and the first inner jaw member, the first inner jaw member is moveable relative to the first outer jaw member; anda second jaw;wherein the effecting surface of the first outer jaw member is proud of the effecting surface of the first inner jaw member in a direction of the second jaw.2) The jaw assembly according to claim 1 , wherein the element is a biasing member that is configured to pull the first inner jaw member in a direction of the first outer jaw member when the jaw assembly is in an open configuration such that in the open configuration claim 1 , the effecting surface of the first outer jaw member is proud of the effecting surface of the first inner jaw member in the direction of the second jaw.3) The jaw assembly according to claim 1 , wherein the element is a tension spring.4) The jaw assembly according to claim 1 , wherein the effecting surface of the first outer jaw member is distal of the effecting surface of the first inner jaw member.5) The jaw assembly according to claim 1 , wherein the jaw assembly is moveable into a first closed configuration where the first outer jaw member is moved towards the second jaw and configured to apply a first gripping force onto an anatomical feature provided between the first jaw and the second jaw claim 1 , ...

Methods and systems for advanced harmonic energy

Aspects of the present disclosure are presented for a medical instrument configured to adjust the power level for sealing procedures to account for changes in tissue impedance levels over time. In some aspects, a medical instrument may be configured to apply power according to a power algorithm to seal tissue by applying a gradually lower amount of power over to time as the tissue impedance level begins to rise out of the “bathtub region,” which is the time period during energy application where the tissue impedance is low enough for electrosurgical energy to be effective for sealing tissue. In some aspects, the power is then cut once the tissue impedance level exceeds the “bathtub region.” By gradually reducing the power, a balance is achieved between still applying an effective level of power for sealing and prolonging the time in which the tissue impedance remains in the “bathtub region.”

Light energy sealing, cutting and sensing surgical device

The present disclosure is directed towards a medical instrument. The medical instrument includes a housing and an end effector assembly operably connected to the housing. The end effector assembly includes first and second jaw members each having a tissue contacting surface, at least one of the first and second jaw members movable between a first, spaced-apart position and a second proximate position, wherein in the second position, the jaw members cooperate to define a cavity configured to receive tissue between the jaw members. The end effector also includes at least one light-emitting element coupled to at least one of the first and second jaw members, the at least one light-emitting element adapted to deliver light energy to tissue grasped between the first and second jaw members to treat the tissue.

Colpotomy system for total laparoscopic hysterectomy

A colpotomy system includes a surgical instrument having a cutting element and a receiver at a distal end thereof and a uterine instrument. The uterine instrument has a handle operably coupled to a shaft having a balloon at a distal end thereof, the shaft extending through a retaining member to access a surgical site, the retaining member including a plurality of transmitters for transmitting at least one signal. A distance between the cutting element of the surgical instrument and one end of the retaining member of the uterine instrument is calculated to determine whether the cutting element is within a predetermined operating zone.

JAW CLOSURE DETECTION SYSTEM

A jaw angle detection system for an end effector assembly includes a first electrical contact that connects to a first jaw member and connects to a generator. A sensor connects to a second jaw member (or an actuator) and connects to the generator, and configured to move relative to the first electrical contact upon movement of the second jaw member (or the actuator) when the first and second jaw members are moved to close about tissue disposed therebetween. Information relating to the position of the sensor relative to the first electrical contact is relayed back to the generator to determine an angle between the first and second jaw members. 1. A jaw angle detection system for an end effector assembly , comprising:a first electrical contact associated with a first jaw member and adapted to connect to one of a controller and a generator; anda sensor associated with one of a second jaw member and an actuator and adapted to connect to one of the controller and the generator, the sensor configured to move relative to the first electrical contact upon movement of one of the respective second jaw member and the actuator when the first and second jaw members are moved to close about tissue disposed therebetween, wherein information relating to the position of the sensor relative to the first electrical contact is relayed back to one of the controller and generator to determine an angle between the first and second jaw members.2. A jaw angle detection system according to claim 1 , wherein the sensor includes a series of resistors.3. A jaw angle detection system according to claim 2 , wherein the sensor includes a voltage divider network.4. A jaw angle detection system according to claim 1 , wherein the sensor includes a second electrical contact that is positioned to conduct a signal back to one of the controller and the generator when the second electrical contact electrically connects to the first electrically contact upon the jaw members closing about tissue past a ...

Vessel sealing instrument with reduced thermal spread and method of manufacture therefor

An electrosurgical vessel sealing instrument having a first and a second opposing jaw member at a distal end thereof, wherein each jaw member includes a jaw housing, a seal plate having a tissue contacting surface and a side wall, and an insulating region disposed on the side wall of the seal plate. The instrument includes the ability to move the jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue. The insulating region enables precision overmolding of the jaw housing to the seal plate, while advantageously reducing thermal spread and edge cutting during vessel sealing procedures.

Method and System for Connecting a Lead to Cardiac Tissue

The invention relates to a method of connecting a lead to cardiac tissue in a patient's body, comprising the steps of: a) providing an elongated hollow delivery tool having a proximal end and a distal end, b) inserting the distal end of the tool into the patient's body, c) navigating the delivery tool until its distal end contacts the cardiac tissue at a contact location, d) determining if the contact location is suitable for connection of the lead, e) if the contact location is deemed suitable, fixedly connecting an electrode of the lead to the cardiac tissue at that location, and f) if the contact location is not deemed suitable, moving the distal end of the delivery tool away from the cardiac tissue and navigating the delivery tool until its distal end contacts the cardiac tissue at an alternative contact location that is spaced apart from the previous contact location, and repeating step d). The invention further relates to a system for connecting a lead to cardiac tissue in a patient's body, comprising: an elongated hollow delivery tool having a proximal end and a distal end, the distal end being arranged for insertion into the patient's body, a navigating device for navigating the distal end of the delivery tool to a contact location on the cardiac tissue, a determinator for determining the suitability of the contact location, and a connecting device for fixedly connecting an electrode of the lead to the cardiac tissue at a selected contact location.

CONTROLLING IMPEDANCE RISE IN ELECTROSURGICAL MEDICAL DEVICES

Various embodiments are directed to electrosurgical systems for providing an electrosurgical signal to a patient. A control circuit may, for a first application period, apply the electrosurgical signal to first and second electrodes according to a first mode. In the first mode, the control circuit may limit the electrosurgical signal to a first maximum power when the impedance between the first and second electrodes exceeds a first mode threshold. The control circuit may also, for a second application period after the first application period, apply the electrosurgical signal according to a second mode. In the second mode, the control circuit may limit the electrosurgical signal to a second mode maximum power when the impedance between the first and second electrodes exceeds a second mode threshold. The second maximum power may be greater than the first maximum power. 110-. (canceled)11. A method for providing an electrosurgical signal to a patient using an electrosurgical system , the method comprising:for a first application period, applying the electrosurgical signal to first and second electrodes of the electrosurgical system according to a first mode, wherein in the first mode, the electrosurgical signal is limited to a first maximum power when the impedance between the first and second electrodes exceeds a first mode threshold; andfor a second application period after the first application period, applying the electrosurgical signal according to a second mode, wherein in the second mode, the electrosurgical signal is limited to a second mode maximum power when the impedance between the first and second electrodes exceeds a second mode threshold, wherein the second maximum power is greater than the first maximum power.12. The method of claim 11 , wherein the first mode threshold is less than the second mode threshold.13. The method of claim 11 , further comprising:for a third application period after the second application period, applying the electrosurgical ...