Электрохирургический инструмент

Bipolar endoscope with high frequency power supply

The endoscope has a tubular shaft, with two branches fixed on the end, rotating relative to each other about the same axis. The rotation of the branches is activated by push or pull devices that are inserted within the shaft. The two devices are connected to opposite poles of a high frequency voltage supply using electrically insulated conductors. The axis (14) around which the two branches rotate has two electrically conducting regions (17,18), which are insulated from each other but which are electrically connected with one of two electrical conductors (19,20) which are connected to the two branches (12,13).

Aus Feinguss hergestellte Endeffektoren für endoskopisches chirurgisches Einweginstrument

Endoskopische chirurgische Instrumente

Elektrochirurgisches Schneidinstrument

Bipolares Elektrochirurgieinstrument

Bipolares Elektrochirurgieinstrument (1) mit zwei über ein Gelenk (8) gegeneinander verschwenkbaren Schenkeln (2, 3) deren distale Enden (4) als Zangenenden (5, 6, 5', 6') ausgebildet sind, die jeweils eine Elektrodenwirkfläche (9, 10) aufweisen, welche mit dem entsprechenden Pol (11, 12) einer zweipoligen Stromführung (13) in Verbindung steht, dadurch gekennzeichnet, dass die Zangenenden (5, 6, 5', 6') einschließlich ihrer Elektrodenwirkfläche (9, 10) über korrespondierende zangenenden- und schenkelseitige Montagesegmente (18, 19, 20, 21) lösbar mit den Schenkeln (2, 3) verbunden sind, dass die Zangenenden (5, 6, 5', 6') eine von einer Außenisolation umgebene metallische Elektrodenspitze (25, 26) aufweisen, die zum benachbarten Zangenende (5, 6, 5', 6') hin die frei liegende Elektrodenwirkfläche (9, 10) aufweist, dass die die ebene Elektrodenwirkfläche (9, 10) umgebenden Außenlängsseiten (28) zu dem benachbarten Zangenende (5, 6, 5', 6') hin eine gezahnte Stirnfläche aufweisen, und dass ...

Bipolares Schneid- und Koagulationsinstrument

Powering a bipolar electrocautery surgical instrument

Electrosurgical instrument

Endoscopic multiple sample bioptome with enhanced biting act ion

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.

Jaw assembly for an endoscopic instrument

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 ...

Method and system for continuity testing of medical electrodes

Electrosurgical instrument for coagulation and cutting

Hemostatic bi-polar electrosurgical cutting apparatus and method

RATCHET LOCKING MECHANISM FOR SURGICAL INSTRUMENTS

HEMOSTATIC BI-POLAR ELECTROSURGICAL CUTTING APPARATUS AND METHOD

SCISSOR TIP FOR BIPOLAR HIGH FREQUENCY ENDOSCOPE

A bipolar scissor for cutting and coagulating tissue includes a first blade having a first cutting edge and a first shearing blade surface and a second blade having a second cutting edge and a second shearing blade surface. Additionally, one of the first and second blades may include a non-conductive material having an embedded electrode.

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.

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 ...

HEMOSTATIC BI-POLAR ELECTROSURGICAL CUTTING APPARATUS AND METHOD

... 2110921 9221301 PCTABScor01 A surgical instrument (10) is described that incorporates bipolar electrodes on opposing shearing members (20, 30) for passing a high frequency current through the tissue for causing hemostasis of the tissue and for cutting the tissue. An electrically insulating material is interposed between the shearing members so that the electrodes are spaced apart from 0.002 to 0.050 inches and the current passes between the opposing electrodes through the tissue and not between the opposing shearing surfaces (21, 31). The insulating material has a higher hardness than the opposing members to reduce wear of the insulation and provide a self-sharpening feature. Methods of simultaneously causing tissue and severing tissue are also provided. The use of a constant voltage high frequency power supply (110) to deliver current to the tissue to cause hemostasis is described in conjunction with those methods.

BIPOLAR ELECTROSURGICAL SCISSORS

BIPOLAR CUTTING AND COAGULATION DEVICE

A bipolar electrosurgical instrument comprising a handle, an end effector and an elongated hollow tube. The handle includes first and second grip members. The end effector includes first, second and third electrodes. The firstelectrode is substantially triangular in shape. The first electrode is adapted to pivot between an open position and a closed position. The first electrode also pivots around its proximal to distal axis and includes a coagulating surface and a cutting edge. The second and third electrodes are arranged substantially parallel to the first electrode when the first electrode is in the closed position. The elongated hollow tube includes a mechanism connecting the handle to the end effector such that movement of the first and second grip members relative to oneanother causes the first electrode to move relative to the second and third electrodes.

BIPOLAR CUTTING AND COAGULATION DEVICE

A bipolar electrosurgical instrument comprising a handle, an end effect or and an elongated hollow tube. The handle includes first and second grip members. The end effector includes first, second and third electrodes. The first electrode is substantially triangular in shape. The first electrode is adapt ed to pivot between an open position and a closed position. The first electrode al so pivots around its proximal to distal axis and includes a coagulating surface and a cutting edge. The second and third electrodes are arranged substantially parallel to the first electrode when the first electrode is in the closed position. T he elongated hollow tube includes a mechanism connecting the handle to the end effector such that movement of the first and second grip members relative to one another causes the first electrode to move relative to the second and third electrodes.

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.

Food equipment for the use with a electricalsurgical instrument and electricalsurgical instrument containing such an food equipment.

Low voltage appts. for performing electrosurgery

The apparatus (10,11,12 and 13) comprises two forcep members, both with distal ends, and a pivot pivotally connecting the two forceps members together so that the distal ends are selectively movable from an open to a closed position. Two electrodes are positioned in opposition on the distal ends of the forceps. A power supply (14) provides a voltage waveform to the first and second electrodes with a voltage less than 120 V RMS and a crest factor near unity. The power supply is connected to the first and second electrodes. Two grasper members have proximal ends and distal ends, with a connecting plate between and connected to the ends of the graspers. The grasper members are selectively movable from an open to a closed position.

Hämostati bipolar electricalsurgical gumption equipment.

SURGICAL TOOL WITH INTEGRATED SENSOR

An instrumented surgical tool and associated systems and methods for performing surgical procedures such as tissue dissection or ligation using the instrumented surgical tool are described. In particular, a surgical tool operatively connected to a sensor used to detect a structural artifact such as the presence and characteristics of a blood vessel and to evaluate the safe use of the surgical tool within a surgical field is described.

ENDOSCOPIC MULTIPLE SAMPLE BIOPTOME

An endoscopic multiple sample bioptome (10) includes a hollow outer member (16) and an axially displaceable inner member (18) extending therethrough. The proximal ends of the outer and inner members are coupled to an actuator (24) for axially displacing one relative to the other. The distal end of the outer member (16) is coupled to one of a cylinder (40) having a sharp distal edge (42) and a jaw assembly (44), while the distal end of the inner member (18) is coupled to the other. The jaw assembly includes a pair of opposed, preferably toothed jaw cups (46a and 46b) each of which is coupled by a resilient arm (50a and 50b) to a base member (52).

Method and system for treatment of atrial tachyarrhythmias

A method and system for ablating tissue to provide a desired set of lesions. The system includes an ablation apparatus having an elongated shapeable section carrying a mechanism such as an electrode for applying ablation energy along the shapeable section. The shapeable section includes a member of shape memory material having a memorized configuration. The shapeable section is shaped manually or using fixtures to display a configuration corresponding to one of the desired lesions and is then employed to create the desired lesion. Thereafter the shapeable section is heated to cause it to resume its memorized configuration. Shaping, heating and ablating to create lesions are continued as necessary provide the desired set of lesions. In some embodiments of the invention, heating may be accomplished using heating elements built into the shapeable section.

Disposable laparoscopic surgical instruments

Disposable laparoscopic surgical instruments for insertion through trocar tubes are disclosed. The instruments broadly include: a hollow aluminum tube; an aluminum clevis which is formed separately from the aluminum tube with the distal end of the hollow aluminum tube crimped around the proximal end of the clevis, and with the clevis including a pivot pin; at least one end effector element having a pivot hole through which the pivot pin of the clevis is pivotally engaged, and another through-hole; an aluminum push rod extending at least partially through the hollow aluminum tube and mechanically coupled to the end effector element; and a plastic actuator engaging the proximal end of the push rod and for imparting reciprocal motion to the push rod relative to the aluminum tube, where the reciprocal motion is translated at the clevis into pivotal motion of the end effector element. Preferably, staple-like connectors are used to mechanically couple the end effector element to the push rod, ...

Endoscopic pericardial scissors

A pericardial endoscopic scissors is provided and generally comprises a hollow tube with a clevis coupled thereto, first and second scissor blades laterally offset from each other and both having elongate straight blade edges angled at about 45 degrees relative to the hollow tube, with the first scissor blade pivotally engaging the clevis so that its blade can angle about 90 degrees relative to the hollow tube in an open position, a rod extending through the hollow tube and coupled to the pivoting first scissor blade, and an actuator engaging the rod and imparting reciprocal motion thereto, which reciprocal motion is translated to pivotal motion of the first scissor blade. The fixed second scissor blade is provided at its distal end with an integral probe element which is laterally offset relative to and indented from the straight blade edge. The probe element extends away from the second scissor blade toward the first scissor blade, and the second scissor blade together with the probe ...

Surgical tool for LSS decompression

A cutting device includes a lower jaw extending between a proximal end and a distal end. The distal end terminates with a cavity and a blunt tip. An upper jaw extends between and proximal end a distal end. The upper jaw is configured for translation along the lower jaw. The upper jaw includes a cutting tip configured to cut bone.

УСТРОЙСТВО ВЫСОКОЧАСТОТНОЙ ОБРАБОТКИ, НОЖ УСТРОЙСТВА ВЫСОКОЧАСТОТНОЙ ОБРАБОТКИ И ИНСТРУМЕНТ УДАЛЕННОЙ ОБРАБОТКИ УСТРОЙСТВА ВЫСОКОЧАСТОТНОЙ ОБРАБОТКИ

Группа изобретений относится к медицине, а именно к медицинским устройствам высокочастотной обработки биологической ткани. Удаленный участок устройства высокочастотной обработки включает в себя нож устройства высокочастотной обработки, имеющий пару браншей для надрезания биологической ткани. Пара браншей выполнена с возможностью резания биологической ткани. Каждая из пары режущих браншей, аксиально поддерживаемых общей поворотной осью и способных открываться и закрываться, имеет участок лезвия для резания биологической ткани. Каждая поверхность пары браншей включает в себя область формирования непроводящего слоя и область электрода. В отношении по меньшей мере одной из пары браншей, ширина области электрода в направлении толщины пластины браншей изменяется в зависимости от позиции браншей в продольном направлении. Достигается более высокая кровоостанавливающая способность для биологической ткани, более надежный захватыват биологической ткани и противодействие столкновению между парой открывающихся ...

ТКАНЕВЫЕ НОЖНИЦЫ ДЛЯ БИОЛОГИЧЕСКОЙ ТКАНИ

Изобретение относится к медицинской технике, а именно к тканевым ножницам для рассечения биологической ткани с одновременным уплотнением обработанных краев ткани посредством денатурации белков. Тканевые ножницы для рассечения биологической ткани содержат первую браншу, вторую браншу и шарнирное соединение. Первая бранша имеет первую поверхность скольжения, которая оканчивается у первого режущего края. На второй бранше расположен керметный элемент. Вторая бранша имеет вторую поверхность скольжения, оканчивающуюся у второго режущего края. Две бранши шарнирно соединены друг с другом, так что поверхности скольжения обращены друг к другу, и первый режущий край может перемещаться мимо второго режущего края. Первая поверхность скольжения имеет слой твердого материала. Вторая поверхность скольжения имеет керамический слой, отличающийся от слоя первой поверхности скольжения. Использование изобретения позволяет получать чистые, хорошо уплотненные края рассечения, которые являются достаточно плоскими ...

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ

Endoskopisches Instrument

Endoskopisches Instrument, umfassend einen Schaft, der ein gabelförmig ausgebildetes distales Ende aufweist, zwei zusammenwirkende Maulteile (31, 31', 31"), wovon mindestens eines im gabelförmigen Ende des Schafts schwenkbar gelagert ist, und eine relativ zum Schaft in einer Zugrichtung verschiebbare Zugstange (20), wobei die Zugstange (20) in ihrem distalen Endbereich mit einem Zugbügel (40) verbunden ist, der an dem mindestens einen schwenkbaren Maulteil (31, 31') angreift, dadurch gekennzeichnet, dass der Zug- bügel (40) U-förmig ausgebildet ist, wobei der Grundschenkel (41) des Zugbügels (40) quer zur Zugrichtung angeordnet und mit der Zugstange (20) verbunden ist und die Seitenschenkel (42, 42') des Zugbügels parallel zur Zugrichtung angeordnet sind und mit mindestens einem ihrer Endbereiche an dem mindestens einen schwenkbaren Maulteil (31, 31') angreifen.

Surgical instrument has force-limiting device located immediately adjacent to the proximal end of the Bowden cable operating link

A surgical instrument (10) has a shaft (12) with a tool (14, 16) at the distal end linked (22) via a force-limiting mechanism (66, 80) to a trigger (40) at the proximal end. The force-limiting mechanism is located immediately adjacent to the proximal end of the link.

BIPOLARE ELEKTROCHIRURGISCHE SCHEERE

Electrosurgical cutting tool

Electrosurgiccal network

Electrosurgical resector tool

Electrosurgical resector tool

An electrosurgical resector tool having an energy delivery structure that provides a plurality of operational modalities to facilitate biological tissue cutting and sealing using radiofrequency (RF) and/or microwave electromagnetic energy. The tool comprises a static first blade element 202, and a pivotable second blade element 207 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. A planar dielectric body 208 is incorporated into one of the blade elements and has a first electrode 206 mounted thereon. A second electrode 214 is mounted elsewhere on the tool and the two electrodes are isolated from each other by the planar dielectric body. The blade elements constitute a compact energy delivery mechanism that can be inserted through an instrument channel of a surgical scoping device, such as an endoscope, gastroscope or bronchoscope.

PAWL MECHANISM FOR SURGICAL INSTRUMENTS

RADIAL KIEFERZANGE FOR THE EXECUTION OF A BIOPSIE

SURGICAL INSTRUMENT

Investment cast end effectors for disposable endoscopic surgical instrument

COBALT BASE ALLOY END EFFECTORS FOR LAPAROSCOPIC SURGICAL SCISSORS

Radiofrequency medical instrument for vessel welding

Double acting endoscopic scissors with bipolar cautery capability

MARYLAND DISSECTORS ENDOSCOPIC INSTRUMENT

Surgical multi-tool and method of use

Surgical tools are disclosed that include a first handle having a first recess, a second handle having a second recess, a first tip disposed in the first recess and extending distally, and a second tip disposed in the second recess and extending distally. The first tip has a first external surface and a first internal surface. The second tip has a second external surface and a second internal surface. The surgical tool has a first configuration wherein the surgical tool operates as forceps. The surgical tool has a second configuration wherein the surgical tool operates as scissors. The first internal surface can be moved adjacent to the second internal surface to permit rotation of the first tip relative to the first recess and permit rotation of the second tip relative to the second recess. The rotation of the first tip and the second tip transitions the surgical tool between the first configuration and the second configuration.

VESSEL SEALER AND DIVIDER HAVING ELONGATED KNIFE STROKE AND SAFETY FOR CUTTING MECHANISM

An endoscopic bipolar forceps includes a housing and a shaft affixed to the housing. The shaft includes a longitudinal axis defined therethrough and a pair of jaw members attached to a distal end thereof. The forceps also includes a drive assembly for moving one of the jaw members relative to the other jaw member. A movable handle is included which moves the jaw members from the open and closed positions. The forceps is adapted to connect to a source of electrosurgical energy such that the jaw members are capable of conducting bipolar energy through tissue held therebetween to effect a tissue seal. A trigger assembly is operatively disposed relative to the movable handle for selectively advancing a knife assembly for cutting tissue along the tissue seal. The knife assembly includes a knife collar which cooperates with a knife shaft to advance a knife through tissue upon activation of the trigger assembly.

REMOTE CONTROL MODULE FOR INSTRUMENTS

A monitoring system may include a processor and display system for displaying results from the monitoring. A user may be in a sterile field away from the processor and display system and selected input devices. A controller may be physically connected to the monitoring system from the sterile field to allow the user to control the monitoring system.

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.

ELECTROSURGICAL INSTRUMENT THAT DIRECTS ENERGY DELIVERY AND PROTECTS ADJACENT TISSUE

An electrode sealing assembly designed for use with an electrosurgical instrument for sealing tissue. The sealing assembly includes first and second jaw members each having an insulative housing and being movable from a first position in spaced relation relative to one another to at least one second position for grasping tissue therebetween. Each of the jaw members includes at least one electrically conductive sealing member, the at least one electrically conductive sealing member of each jaw member having a tissue engaging surface and a side surface. A layer of dielectric material is disposed on at least a portion of the side surface of at least one of the electrically conductive sealing members of one of the jaw members configured to insulate surrounding tissue from the electrically conductive sealing member.

RADIAL JAW BIOPSY FORCEPS

A biological forceps device (10), comprising a flexible main coil (50) attached at its distal end (12) to a pair of homologous jaws (18). The jaws (18) are opened and closed by attachment to a pair of pu ll wires (60) which extend through the main coil (50), into a handle (17) at its proximal end (16). The handle (17) has a spool (19 ) which slides about a central shaft (56) attached to the main coil (50).

BIPOLAR ELECTROSURGICAL SCISSORS

Bipolar electrosurgical scissors are disclosed having a pair of blades joined for relative movement in a scissor-like action between open and closed positions. At least one of the blades comprises a tissue contacting surface and first and second spaced apart electrodes extending along the surface. Current flow between the first and second electrodes promotes hemostasis in tissue contacting the surface. Preferably, each blade of the scissors includes first and second spaced-apart electrodes.

Surgical instruments comprising an articulation drive that provides for high articulation angles

A surgical instrument is disclosed comprising a shaft, an end effector, and an articulation joint rotatably connecting the end effector to the shaft. The surgical instrument further comprises an articulation drive system configured to permit high degrees of articulation.

Vibration sensitive ablation device and method

An ablation apparatus including a maneuvering mechanism, a conductive element attached to the apparatus, a sensor attached to the apparatus and an output device in communication with the sensor is provided. The sensor senses vibration during the ablation procedure and sends a signal to the output device to reduce power to the conductive element.

Bipolar endoscopic surgical scissor blades and instrument incorporating the same

Endoscopic bipolar scissor blades are formed in a laminate assembly of an electrically conductive electrode, an electrically insulating material, and a metal shearing surface which is electrically insulated and physically spaced from the electrode by the insulating material which is disposed therebetween. In one embodiment, the electrode is a metal blade, while the insulating material is a ceramic which is fixed to the metal blade, and the metal shearing surface which also provides the cutting edge is of a metal material which is fixed to the ceramic. In a second embodiment, the insulating material is a molded ceramic blade, with the electrode and the metal shearing surface layer metalized or otherwise fixed to the ceramic blade. In a third embodiment, the electrode is metalized on a thin layer insulating material which is fixed onto a metallic blade. In a fourth embodiment, metallic shearing and electrode layers are laminated to opposite sides of a fiberglass material. In all embodiments ...

BIPOLAR ENDOSCOPIC SURGICAL SCISSOR BLADES AND INSTRUMENT INCORPORATING THE SAME

Endoscopic bipolar scissor blades (26, 28) are formed in a laminate assembly of an outer electrically conductive layer (26q, 28q), an intermediate electrically insulating layer (26r, 28r), and an inner face layer (26f, 28f) which is a coating of titanium dioxide, chromium dioxide, or zirconium dioxide. In one embodiment, the conductive layer is a metal blade, while the insulating material is a ceramic which is fixed to the metal blade. In a second preferred embodiment, the insulating layer (226r, 228r) and the inner face layer (226f, 228f) are applied simultaneously by coating the metal blade with a mixture of ceramic and titanium dioxide, chromium dioxide, or zirconium dioxide. In a third embodiment, the insulating layer is a molded ceramic blade (326r, 328r), and the electrically conductive layer (326f, 328f) is metalized or otherwise fixed to the ceramic blade. In all embodiments, the cutting edges and shearing surfaces are insulated from the electrodes, and no short circuit can form ...

Hemostatic bi-polar electrosurgical cutting apparatus

ТКАНЕВЫЕ НОЖНИЦЫ ДЛЯ БИОЛОГИЧЕСКОЙ ТКАНИ

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ-РЕЗЕКТОР

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ШАРНИРНЫМ УПЛОТНЕНИЕМ

DOPPELTWIRKENDE ENDOSKOPISCHE SCHEREN MIT BIPOLARER AUSBRENNUNGSKAPAZITÄT

Flexibles mikrochirurgisches Instrument mit rotierbarem Haken

High frequency surgical instrument to coagulate blood or cut human tissue incorporates temperature sensor electrodes at distal end

A set of high-frequency surgical scissor-tongs coagulate blood or cut human tissue. The tongs are coupled to a source of high-frequency energy. One of the tong tips incorporates an electrode temperature sensor.

Bipolare electrochirurgische Scheere zur feinen dissektion.

Hämostatisches, bipolares, elektrochirurgisches Schneidgerät

Electrosurgical instrument

Electrosurgical instrument

Surgical tool

ENDOSCOPIC SURGICAL INSTRUMENT WITH ROTATE-CASH ENDEFFEKTOREN

SURGICAL BIPOLAR SHEARS

ELECTRICALSURGICAL COAGULATION INSTRUMENT WITH FABRIC DAM

Conductive and nonconductive endoscopic end effectors

Electrosurgical instrument that directs energy delivery and protects adjacent tissue

Systems and methods for percutaneous intravascular access for arteriovenous fistula

A device for extending, elongating, or repairing a previously created arteriovenous fistula between a first blood vessel and an adjacent second blood vessel includes a main body having a primary lumen and an articulating jaw member disposed at the distal end of the main body. The jaw member is configured with two elements to allow rotation of one element about a pivot point to grasp tissue while being rotated. The jaw member is also configured to allow thermal energy delivery to one or both elements of the jaw member that allow tissue welding and cutting with DC, RF, Laser or Ultrasonic energy. A second lumen located within one element of the jaw member is configured to allow advancement over a guidewire into the second vessel while the other element of the jaw member remains within the first blood vessel at the position where the arteriovenous fistula, or aperture, exists between the first and second blood vessel.

THORACOSCOPIC SURGICAL LUNG CLAMPS

Electrosurgical forceps for grasping, treating, and/or dividing tissue

ELECTROSURGICAL FORCEPS FOR GRASPING, TREATING, AND/OR DIVIDING TISSUE An electrosurgical forceps (100), comprising: first and second shaft members (110, 120) each including an inner frame (114, 124), a jaw member (210, 220) secured to and extending distally from the inner frame (114, 124), and an outer housing (116, 126) surrounding a portion of the inner frame (114, 124); a pivot member (130) pivotably coupling the inner frames (114, 124) of the first and second shaft members (110, 120) to one another such that pivoting of the first and second shaft members (110, 120) relative to one another between spaced-apart and approximated positions pivots the jaw members (210, 220) relative to one another between open and closed positions; a knife (140) selectively translatable through the first shaft member (110) from a retracted position to an extended position wherein the knife (140) extends at least partially between the jaw members (210, 220); a knife deployment mechanism (150) operably coupled ...

Systems and methods for controlling delivery of electrosurgical energy

SYSTEMS AND METHODS FOR CONTROLLING DELIVERY OF ELECTROSURGICAL ENERGY A computer-implemented method for controlling delivery of electrosurgical energy to a vessel to seal the vessel, the computer-implemented method comprising: collecting data from an electrosurgical system including an instrument and energy source while the instrument is delivering electrosurgical energy from the energy source to a vessel to seal the vessel, the data including at least one electrical parameter associated with the delivery of the electrosurgical energy; communicating the data to at least one machine learning algorithm; predicting, by the at least one machine learning algorithm, a burst pressure probability of the vessel; and determining if the vessel is adequately sealed based on the prediction; in a case where it is determined that the vessel is not adequately sealed: determining, by a second machine learning algorithm, an output based upon the data; communicating the determined output to a computing device ...

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.

SYSTEMS AND METHODS FOR CONTROLLING DELIVERY OF ELECTROSURGICAL ENERGY

A computer-implemented method for controlling delivery of electrosurgical energy to seal a vessel, includes collecting data from an electrosurgical system including an instrument and energy source while the instrument is delivering electrosurgical energy from the energy source to a vessel, predicting by using a machine learning algorithm a burst pressure probability of the vessel based on the data, and determining if the vessel is adequately sealed based on the prediction. The data includes an electrical parameter associated with delivery of the electrosurgical energy. Where it is determined that the vessel is not adequately sealed: determining an output by a second machine learning algorithm, communicating the determined output to a computing device associated with the energy source for use in formulating an energy-delivery algorithm, and delivering, using the instrument, additional electrosurgical from the energy source to the vessel to seal the vessel according to the energy-delivery ...

OPEN VESSEL SEALING INSTRUMENT WITH CUTTING MECHANISM AND DISTAL LOCKOUT

An open electrosurgical forceps for sealing tissue includes a pair of first and second shaft members each having a jaw member disposed 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. Each of the jaw members includes an electrically conductive sealing plate for communicating electrosurgical energy through tissue held therebetween. At least one of the jaw members includes a knife channel defined along a length thereof which is dimensioned to reciprocate a cutting mechanism therealong for cutting tissue disposed between jaw members. An actuator having a rack and pinion system advances the cutting mechanism from a first position wherein the cutting mechanism is disposed proximal to tissue held between the jaw members to at least one subsequent position wherein the cutting mechanism is disposed distal to tissue held between the jaw members ...

BI-POLAR ELECTROSURGICAL ENDOSCOPIC INSTRUMENTS

Endoscopic surgical instruments are provided that have bipolar electrodes on opposing movable members (18, 19) for passing a high frequency current through tissue for simultaneously severing or manipulating the tissue and causing hemostasis of the tissue. An electrically insulating material is interposed between the mo vable members (18, 19) so that the electrodes (18, 19) are spaced apart from 0.002 to 0.050 inches and the current passes between t he opposing electrodes (18, 19) through the tissue. Methods of endoscopically achieving hemostasis while simultaneously, manipul ating and cutting tissue are also provided. Use of a constant voltage high frequency power supply to deliver current to the tis sue to cause hemostasis is described in conjunction with those methods.

DOUBLE ACTING ENDOSCOPIC SCISSORS WITH BIPOLAR CAUTER CAPABILITY

A double acting bipolar endoscopic scissors (10) includes a hollow tube (16) wit h an integral clevis (24) and a bipolar push rod extending therethrough. The tube (16) is rotatably mounted in a handle member wh ich is provided with a manual actuation lever (14). The bipolar push rod includes a pair of spaced apart rods (32, 34) which are insulat ed along substantially their entire lengths by polypropylene sheaths (35, 35a), and which are insert molded in a distal insulating collar (45 ) near their distal ends, in a proximal insulating collar (36) near their proximal ends, and in plurality of non-conductive cylinders (35, 35a) therebetween. The distal collar includes a flattened distal portion (50) and the distal ends of the rods are bent approximately 90 degrees a nd exit the flattened portion. A pair of scissor blades (26, 28) are mounted in the clevis (24) with an axle screw and a nut and are insulate d from the clevis and the axle screw.

ELECTROSURGICAL APPARATUS AND METHOD EMPLOYING CONSTANT VOLTAGE

... 2110923 9222256 PCTABS00018 Methods and apparatus (10, 11, 12, 13, 14, 15) are provided for use in performing electrosurgery, wherein a power supply (14) supplies an electrosurgical instrument (11,12,13) with a low voltage power signal having a substantially constant peak-to-peak voltage that is independent of the load impedance and which has a crest factor near unity. A power supply (14) is provided to supply a voltage waveform in accordance with the methods of the invention. A clipping circuit is also provided to permit practice of the methods using conventional electrosurgical generators and previously known electrosurgical instruments, wherein the voltage amplitude and waveform is modified to the desired regime.

INVESTMENT CAST END EFFECTORS FOR DISPOSABLE LAPAROSCOPIC SURGICAL INSTRUMENT

An investment cast bronze end effector blade for a disposable laparoscopic surgical instrument having a push rod is disclosed. The end effector blade has an aperture for engaging either means which couple the push rod of the instrument to the end effector blade. The end effector blade has a body member having a distal element and a base element integral with integral first and second masses of bronze. The base element is an extended portion substantially parallel to and in an offset configuration with the sharp edge portion, and includes an aperture to which the coupling means couples. The first mass of bronze integral with the investment cast end effector blade bridges the offset configuration between the sharp edge element and the base element. The second mass of bronze integral with the investment cast blade partially surrounds the aperture of the base element and extends to the end of the base element remote from the distal portion.

DISPOSABLE LAPAROSCOPIC SURGICAL INSTRUMENTS

Disposable laparoscopic surgical instruments for insertion through trocar tubes are disclosed. The instruments broadly include: a hollow aluminum tube; an aluminum clevis which is formed separately from the aluminum tube with the distal end of the hollow aluminum tube crimped around the proximal end of the clevis, and with the clevis including a pivot pin; at least one end effector element having a pivot hole through which the pivot pin of the clevis is pivotally engaged, and another through-hole; an aluminum push rod extending at least partially through the hollow aluminum tube and mechanically coupled to the end effector element; and a plastic actuator engaging the proximal end of the push rod and for imparting reciprocal motion to the push rod relative to the aluminum tube, where the reciprocal motion is translated at the clevis into pivotal motion of the end effector element. Preferably, staple-like connectors are used to mechanically couple the end effector element to the push rod, ...

BIPOLAR ELECTROSURGICAL INSTRUMENT WITH REPLACEABLE ELECTRODES

A bipolar electro-surgical instrument for vessel sealing comprises first, and second members (13, 14) connected by a pivot (15). A pair of jaws (19, 20) have opposable seal surfaces that are designed to grasp vascular tissue, and conduct bipolar electro-surgical current therethrough. Electrodes (11, 12) on the jaws, including the seal surfaces (25) are removable, and disposable. The jaws of the instrument have mechanical interfaces (22, 23) designed to accept replacement electrodes. The instrument further comprises interlocking ratchets (29, 30) designed to hold a constant closure forces between the seal surfaces. Wires (26, 27) extend from the electrodes along one of the members, and are connectible to an electro-surgical generator.

Straight or curved coeliosurgery scissors with electrocoagulating fields in bipolar mode

Ciseaux de coeliochirurgie électrocoagulants en mode bipolaire. L'invention est une paire de ciseaux de coeliochirurgie permettant la coupe des tissus par cisaillement et dans le même temps, ou préalablement, la coagulation des tissus en mode bipolaire. Ils sont constitués: - d'une tête avec lame avec face interne en céramique et face externe en acier inox - d'un corps avec tracteur isolé par tube d'alumine, - d'une poignée de commande reliée au tracteur par un axe isolé par manchon et plaque d'alumine.

DISPOSABLE ELECTRO-SURGICAL COVER ELEMENTS AND ELECTRO-SURGICAL INSTRUMENT

Electro-surgical instrument and attachments for converting a mechanical surgical instrument into an electro-surgical instrument are disclosed for applying electrical current to tissue, such as a blood vessel, to seal or cauterize the tissue. A cover element is slidable over a distal end of a component of a mechanical surgical instrument, such as a forceps. Each cover element defines a single pocket or cavity and a single aperture or opening at one end thereof for receiving and surrounding the distal end of the component and an electrically conductive element attached to an outer surface of the cover element. RF energy can be applied to tissue through the electrically conductive elements. After the procedure, the cover elements can be slidably removed from the forceps member and are disposable.

ENDOSCOPIC BIPOLAR ELECTROCAUTERY INSTRUMENTS

An endoscopic bipolar electro-cautery instrument includes a proximal actuator with a distally extending lever (62) coupled by a tube (20) and push rod (38) to a pair of distal graspers. A stationary jaw (16) with an integral clevis is mounted inside the distal end of the tube and electrically contacts the inner surface thereof. A movable jaw (22) is electrically and mechanically coupled to the push rod (38) which is covered with an insulating shrink wrap (39) from a point just proximal of its connection with the movable jaw to a point near its proximal end. The uninsulated proximal end of the tube is mounted in a conductive bushing (46) which rotates within a nonconductive handle (40). The proximal end of the push rod (38) is fitted between the bushing and the push rod.

Endoscopic multiple sample bioptome

An endoscopic multiple sample bioptome includes a hollow outer member and an axially displaceable inner member extending therethrough. The proximal ends of the outer and inner members are coupled to an actuator for axially displacing one relative to the other. The distal end of the outer member is coupled to one of a cylinder having a sharp distal edge and a jaw assembly, while the distal end of the inner member is coupled to the other. The jaw assembly includes a pair of opposed, preferably toothed jaw cups each of which is coupled by a resilient arm to a base member. The arms are bent to urge the jaws away from each other. The base member is mounted inside the cylinder and axial movement of the jaw assembly and cylinder relative to each other draws the arms into the cylinder and brings the jaw cups together in a biting action. When the outer member is coupled to the jaw assembly and the inner member is coupled to the cylinder, the distal end of the inner member is preferably coupled to ...

Sequential Activation RF Electrode Set for Renal Nerve Ablation

A catheter includes a flexible shaft having a length sufficient to access a patient's renal artery. A treatment element at the distal end of the shaft is dimensioned for deployment within the renal artery. The treatment element comprises a radially expandable structure configured to maintain positioning within the renal artery. A multiplicity of electrodes are spaced apart on the treatment element and configured for switchable activation and deactivation in a predetermined sequence to generate overlapping zones of heating directed at perivascular nerves of the renal artery. The overlapping heating zones comprise a distal zone associated with relatively high current densities at a distance from the treatment element sufficient to ablate the perivascular renal nerves and a proximal zone associated with current densities lower than those of the distal zone and insufficient to cause thermal injury to tissue of the renal artery adjacent the treatment element.

Scissor system for endoscopic and open surgical procedure

Scissor systems are described. The scissor systems are provided with a secondary, lower parallel jaw member that supports a stand alone blade or jaw member against a reinforced blade or jaw member continuously through the cutting action, while simultaneously maintaining continuous interference, i.e., shear action, and sharply reducing the probability of skewing or spreading.

Reactance changes to identify and evaluate cryo ablation lesions

A method of assessing lesion quality of an ablated tissue region comprising ablating at least a portion of the tissue region. The reactance of the ablated tissue region is measured. The lesion quality of the ablated tissue region is determined based on the measured reactance.

Simultaneous ablation by multiple electrodes

Apparatus, including a current source which has a transformer having a primary winding coupled to receive input power. The transformer has a secondary winding having a first plurality of secondary taps configured to supply electrical power at an ablation frequency to an electrode in contact with body tissue. The issue has an impedance, and is ablated by the electrical power. The current source has a second plurality of capacitors. The apparatus also includes a controller which is configured to select one of the secondary taps and at least one of the capacitors in response to the impedance and the ablation frequency, and to connect the selected secondary tap to the selected at least one of the capacitors.

Tuned rf energy for selective treatment of atheroma and other target tissues and/or structures

A catheter and catheter system can use energy tailored for remodeling and/or removal of target material along a body lumen, often of atherosclerotic material of a blood vessel of a patient. An elongate flexible catheter body with a radially expandable structure may have a plurality of electrodes or other electrosurgical energy delivery surfaces to radially engage atherosclerotic material when the structure expands. An atherosclerotic material detector system may measure and/or characterize the atherosclerotic material and its location, optionally using impedance monitoring.

Systems and methods for turbinate reduction

The present disclosure includes an electrosurgical apparatus for treating tissue at a target site. The apparatus has a shaft with a proximal end and a distal end, and the distal end includes an active disposed laterally on the shaft distal end and return electrode. The return electrode may have a plurality of apertures through it, which are fluidly connected to a fluid delivery element, operable to deliver a conductive fluid to the shaft distal end. The return electrode may encircle at least a portion of the shaft and may extend distally and proximally from the active electrode.

Cooling systems for electrode arrays

A medical device is disclosed, including a catheter body; an electrode array coupled to the catheter body, the electrode array being transitionable from a substantially linear configuration to a substantially helical configuration; and a fluid conduit coupled to the catheter body spaced apart from the electrode array, wherein the fluid conduit is transitionable from a substantially linear configuration to a substantially helical configuration. The device may include a fluid source in communication with the fluid conduit and a radiofrequency signal generator coupled to the electrode array.

Apparatus and methods to create and maintain an intra-atrial pressure relief opening

The present disclosure relates to a method and a device for treating heart failure by normalizing elevated blood pressure in the left and right atria of a heart of a mammal The present disclosure includes methods for creating and maintaining an opening in the atrial septum. Tools for making an opening and enlarging the opening are also disclosed. Use of the techniques and tools described herein prolongs the patency of an intra-atrial pressure relief opening.

Apparatus and Method for Ablating Tissue

A control system alters one or more characteristics of an ablating element to ablate tissue. In one aspect, the control system delivers energy nearer to the surface of the tissue by changing the frequency or power. In another aspect, the ablating element delivers focused ultrasound which is focused in at least one dimension. The ablating device may also have a number of ablating elements with different characteristics such as focal length.

Temperature Monitoring Return Electrode

An electrosurgical return electrode is disclosed. The return electrode includes a first and second flexible conductive material layers and a material layer disposed between the first and second conductive material layers. The material layer is transitionable between a solid state and a non-solid state, the material layer is also configured to melt upon an increase in temperature beyond a predetermined threshold, thereby increasing conductivity between the first and second conductive material layer.

Apparatus and Method for Heating Biological Targets

An apparatus and method for selectively heating a biological target within a treatment region of a subject is disclosed. The method includes administering to the subject a dielectric heating modulator that becomes associated with the biological target. The method also includes positioning the treatment region between first and second electrodes connected to a generator, and activating the generator to apply an alternating electric field between the first and second electrodes and across the treatment region to thereby heat the treatment region. The dielectric heating modulator causes the biological target to heat at a faster rate than non-targets within the treatment region, which preferably results in the killing of the biological target.

Energy facilitated composition delivery

A device for delivering a composition to a hollow body region is disclosed. In one aspect, the device comprises a first longitudinal member and a second longitudinal member. Both of the longitudinal members may comprise conductive electrodes. The longitudinal members are further configured to be connected to an energy source such that the conductive electrodes are configured to generate an energy field. At least one of the longitudinal members further comprises a delivery element configured to deliver at least one composition to the body region, such that the composition is delivered in a direction that is influenced by the generated energy field. In one aspect, the body region is a vessel comprising an occlusion.

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.

Contact sensor and sheath exit sensor

A system and method is provided that allows for determining the local impedance of one or more electrodes of an electrode catheter. Such local impedance may be utilized to identify the relative position of an electrode catheter to a sheath of a guiding introducer. In another arrangement, local impedance of a catheter electrode can be utilized to calibrate a catheter electrode to provide improved contact sensing.

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

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

Access and tissue modification systems and methods

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

Multi-electrode electrical pulse delivery system for treatment of biological tissues

Systems and methods for treating or manipulating biological tissues are provided. In the systems and methods, a biological tissue is placed in contact with an array of electrodes. Electrical pulses are then applied between a bias voltage bus and a reference voltage bus of a distributor having switching elements associated with each of the electrodes. The switching elements provide a first contact position for coupling electrodes to bias voltage bus, a second contact position for coupling electrodes to the reference voltage bus, and a third contact position for isolating electrodes from the high and reference voltage buses. The switching elements are operated over various time intervals to provide the first contact position for first electrodes, a second contact position for second electrodes adjacent to the first electrodes, and a third contact position for a remainder of the electrodes adjacent to the first and second electrodes.

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

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

Skin treatment devices and methods

A skin treatment device for home use is provided herein. The device has enhanced safety features and improved operation efficiency. RF energy is delivered under strict control to a relatively small and well localized volume of the skin, avoiding excessive heating of the skin surface. Surface heating is monitored both by direct temperature measurement and by movement monitoring of the device to ensure proper use and prevent skin overheating and the pain associated therewith.

Delivery devices with coolable energy emitting assemblies

Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input.

Medical instrument and method of use

A medical for removing tissue from a patient includes an elongated probe with a working end. A pair of jaws is provided at the working end. The jaws may be closed for cutting and treatment of the tissue. Cutting may be effective through a sharpened cutting blade, and RF cutting blade, and similar cutting edges. The tissue may be remodeled using heat generated from passive heating elements on the jaws, active heating elements on the jaws, a PTCR heating element carried by the jaws, or resistive heaters on the jaws.

Treatment system and actuation method of treatment system

A treatment system includes a power source for heat generation which outputs power for heat generation, a grasping member having a heating element which applies the power for heat generation as thermal energy to a grasped living tissue and is disposed at a grasping surface, and a control section which repeats a first control mode of performing control such that the heating element reaches a first temperature and a second control mode of performing control such that the heating element becomes lower than the first temperature, and controls the power source for heat generation according to a temperature change parameter based on change in temperature of the heating element in the first control mode or the second control mode so as to end application of the thermal energy.

Resection loop for tissue resection and related method of use

A medical device includes a sheath extending from a proximal end to a distal end and having a lumen extending therethrough and an end-effector disposed at the distal end of the sheath including a first resection loop configured to resect tissue and a secondary tool including one of a second resection loop and a tissue-vaporizing structure mounted distally to the first resection loop.

Surgical end effector jaw and electrode configurations

A surgical end effector may comprise first and second jaw members. The second jaw member may comprise an offset proximal supply electrode that is positioned to contact an opposing member of the first jaw member when the first and second jaw members are in the closed position. The second jaw member may also comprise a distal supply electrode that is positioned distal of the offset proximal electrode and is aligned with a conductive surface of the first jaw member when the first and second jaw members are in the closed position. When the first and second jaw members are in the closed position, the proximal supply electrode may be in contact with the opposing member and the distal supply electrode is not in contact with the conductive surface of the first jaw member.

Anti-Sticking Electrosurgical Instrument

The present invention relates to a non-stick coated electrosurgical diathermy instrumentation, comprising: a handle portion; an isolation tube, connected to the handle portion by one end thereof; an instrument portion, connected to another end of the isolation tube, wherein an anti-sticking layer is formed on the surface of the instrument portion; and an electrode, connected to the handle portion and an external conductive member. In the present invention, the instrument portion is able to generate heat when the conductive member conducts electricity to the instrument portion.

Ablation catheter with flexible tip

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

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.

Bladder denervation for treating overactive bladder

A device and method for transvaginal or transrectal treatment of a bladder pathology. The device includes an elongate body that includes a longitudinal axis, a handle at one end of the body, a head at the other end of the body, and a shaft between the handle and the head. The head includes a substantially flat surface and one or more retractable needle electrodes extending through the flat surface. The method includes inserting a probe into a vagina or rectum of a patient, where the probe includes a head portion comprising one or more retractable needle electrodes; heating one or more pelvic nerves supplying the patient's bladder by emitting radiofrequency energy from the one or more needle electrodes; and as a result of the heating, damaging the one or more pelvic nerves.

Methods and apparatus for renal neuromodulation

Methods and apparatus are provided for renal neuromodulation using a pulsed electric field to effectuate electroporation or electrofusion. It is expected that renal neuromodulation (e.g., denervation) may, among other things, reduce expansion of an acute myocardial infarction, reduce or prevent the onset of morphological changes that are affiliated with congestive heart failure, and/or be efficacious in the treatment of end stage renal disease. Embodiments of the present invention are configured for percutaneous intravascular delivery of pulsed electric fields to achieve such neuromodulation.

SURGICAL FORCEPS HAVING A CUTTING EDGE

A surgical forceps includes an end effector assembly including a first jaw member and a second jaw member pivotally engaged with one another. At least one of the first or second jaw member is pivotable between a spaced-apart position and an approximated position. The first jaw member includes first and second surfaces on opposite sides thereof. The first surface is disposed in opposition to the second jaw member. The second surface includes a cutting edge disposed on a proximal portion thereof. The second jaw member includes a proximal flange having first and second raised sidewalls defining a proximal channel therebetween. The proximal channel receives the cutting edge of the first jaw member when the first and second jaw members are in the approximated position. The cutting edge of the first jaw member is exposed when the first and second jaw members are in the spaced apart position. 1. A surgical forceps , comprising:an end effector assembly, including:a first jaw member and a second jaw member pivotally engaged with one another, at least one of the first or second jaw member pivotable relative to the other of the first or second jaw member between a spaced-apart position and an approximated position,the first jaw member including first and second surfaces on opposite sides thereof, the first surface disposed in opposition to the second jaw member and the second surface including a cutting edge disposed on a proximal portion thereof facing away from the second jaw member,the second jaw member including a proximal flange having first and second raised sidewalls defining a proximal channel therebetween, the proximal channel configured to receive the cutting edge of the first jaw member therebetween when the first and second jaw members are disposed in the approximated position and expose the cutting edge of the first jaw member when the first and second jaw members are disposed in the spaced apart position.2. The surgical forceps of claim 1 , wherein the proximal ...

RADIO FREQUENCY SLIMMING TREATMENT APPARATUS

A radio frequency slimming treatment apparatus includes a plurality of connection components and a plurality of radio frequency slimming treatment heads, each of which includes a main body of the treatment head, a plurality of radio frequency electrodes, an interface that is employed to connect the radio frequency source configured over the main body of the treatment head, a fixation surface configured at the end of the main body of the treatment head that is distal from the interface. The plurality of radio frequency electrodes are configured over the fixation surface and arranged in the form of an array. As a result, the current of the radio frequency slimming treatment head of the present disclosure is uniform, the temperatures of the different regions of the radio frequency electrodes are uniform and the penetration depth of the radio frequency current is deeper, and the lipolytic effect is significant. 1. A radio frequency slimming treatment head , comprising:a main body of the treatment head;an interface that is employed to connect a radio frequency source and is configured over the main body of the treatment head;a fixation surface that is configured at the side of the main body of the treatment head that is distal from the interface; anda plurality of radio frequency electrodes that are all configured over the fixation surface, and are arranged in the form of an array to ensure the density of the output current to be uniform.2. The radio frequency slimming treatment head of claim 1 , wherein:the plurality of radio frequency electrodes are all ring-shaped; andthe plurality of radio frequency electrodes take nesting arrangement from the center of the fixation surface.3. The radio frequency slimming treatment head of claim 2 , wherein the radio frequency electrodes are circular ring-shaped or square ring-shaped.4. The radio frequency slimming treatment head of claim 3 , wherein the plurality of radio frequency electrodes are connected in parallel.5. The radio ...

Adjustable clamp systems and methods

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

DIGESTIVE-TRACT TREATMENT METHOD

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

SYSTEM AND METHOD FOR DELIVERING 5 HIGH CURRENT TO ELECTROSURGICAL DEVICE

An electrosurgical system is disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical power and an electrosurgical device coupled to the electrosurgical generator. The electrosurgical device includes a transformer and one or more active electrodes coupled thereto, wherein the transformer is adapted to step down the voltage of the power supplied by the electrosurgical generator. 117-. (canceled)18. An electrosurgical system , comprising:an electrosurgical generator configured to supply electrosurgical power, the electrosurgical generator including an isolation transformer; and a housing;', 'a shaft extending distally from the housing;', 'an end effector assembly supported at a distal portion of the shaft; and', 'a step-down transformer disposed in the distal portion of the shaft, the step-down transformer electrically coupled between the isolation transformer and the end effector assembly such that the step-down transformer modifies electrosurgical energy from the electrosurgical generator to the end effector assembly., 'an electrosurgical device coupled to the electrosurgical generator, the electrosurgical device including19. The electrosurgical system according to claim 18 , wherein the end effector assembly includes a first jaw member having a first electrode and a second jaw member having a second electrode.20. The electrosurgical system according to claim 19 , wherein the step-down transformer includes a primary winding coupled to the isolation transformer and a secondary winding coupled to at least one of the first electrode or the second electrode.21. The electrosurgical system according to claim 18 , wherein the electrosurgical device is configured to facilitate the flow of electrosurgical energy through tissue positioned within the end effector assembly.22. The electrosurgical system according to claim 18 , wherein the step-down transformer modifies a voltage of the electrosurgical energy supplied by the electrosurgical ...

RADIOFREQUENCY TREATMENT PROBE FOR TREATING VAGINAL LAXITY AND ASSOCIATED SYSTEMS AND METHODS

The present invention is related to a radiofrequency treatment probe and method delivering radiofrequency for controlled heating of tissue within the vagina for the treatment of vaginal laxity. The treatment probe may include a curved, rounded disposable treatment tip that may be designed to accommodate vaginal anatomy. An electrode assembly may be coupled to the treatment tip, wherein the electrode coupled to the treatment tip may be configured to transfer radiofrequency energy through vaginal skin surface to the tissue. A temperature measuring feature may include or be coupled to the electrode assembly, wherein the electrode assembly may be configured to regulate and maintain a pre-determined skin temperature. A radiofrequency handle may be configured to connect to a disposable treatment tip. A connector may be configured to connect to the radiofrequency handle to a radiofrequency generator. A protective apparatus may be configured to protect the radiofrequency handle. 1. A treatment probe comprising:a. a curved, rounded treatment tip designed to accommodate vaginal anatomy;b. an electrode assembly coupled to the treatment tip, wherein the electrode coupled to the treatment tip is configured to transfer radiofrequency energy to specific vaginal structures;c. a temperature measuring feature coupled to the electrode assembly, wherein the temperature measuring feature coupled to the electrode assembly is configured to monitor and regulate electrode and skin temperature;d. a connector configured to connect the treatment tip to a radiofrequency generator.2. The treatment probe according to further comprising a protective apparatus configured to protect the treatment tip.3. The treatment probe according to wherein the treatment tip is connected to the radiofrequency generator by a radiofrequency handle claim 1 , and wherein the radiofrequency handle is configured to be reusable.4. The treatment probe according to wherein the electrode assembly comprises:a. a conductive ...

Neuromodulation catheters having jacketed neuromodulation elements and related devices, systems, and methods

A neuromodulation catheter in accordance with a particular embodiment includes an elongate shaft and a neuromodulation element operably connected to the shaft. The shaft includes a proximal hypotube segment at its proximal end portion and a jacket disposed around at least a portion of an outer surface of the hypotube segment. The jacket may be made at least partially of a polymer blend including polyether block amide and polysiloxane. The neuromodulation element includes a distal hypotube segment and a tubular jacket disposed around at least a portion of an outer surface of the distal hypotube segment. The jacket has reduced-diameter segments spaced apart along its longitudinal axis. The neuromodulation element further includes band electrodes respectively seated in the reduced-diameter segments and respectively forming closed loops extending circumferentially around the jacket.

MEDICAL DEVICES FOR RENAL NERVE ABLATION

Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for renal nerve ablation. The medical device may include an elongate shaft having a distal region. An expandable member may be coupled to the distal region. A plurality of electrodes may be coupled to the expandable member and a single conductive member may be coupled to each electrode. Where one of the plurality of electrodes is active, the remaining electrodes may be inactive and act as ground or return electrodes. The electrode of the plurality of electrodes that is active may change over time. 1. A medical device for performing ablation procedures , comprising:an elongate shaft having a distal region;an expandable member coupled to the distal region;a plurality of electrodes coupled to the expandable member;a conductive member connected to each of the electrodes, where each of the connected conductive members are capable of powering the electrode to which the conductive member is connected; andwherein when one of the plurality of electrodes is active, the remaining unpowered electrodes act as ground electrodes.2. The medical device of claim 1 , further comprising:one or more temperature sensors coupled to the expandable member; anda single conductive member connected to each of the one or more temperature sensors.3. The medical device of claim 1 , wherein the conductive member is a conductive trace.4. The medical device of claim 1 , wherein the one of the plurality of electrodes that is active changes over time.5. The medical device of claim 1 , wherein each of the plurality of electrodes is active for an equal amount of time.6. The medical device of claim 1 , wherein an active electrode is an electrode actively receiving power through the conductive member connected thereto.7. The medical device of claim 1 , further comprising:a coating covering each of the conductive members.8. The medical device of claim 7 , wherein the coating ...

Device for Ablating Arterial Plaque

A method of ablating plaque from an artery section, using a catheter having a longitudinal body and a distal imaging and ablation tip connected to a distal end of the longitudinal body. The tip has an ultrasound imaging array, and a distal, forward directed face, distal to the ultrasound imaging array, and including a set of carbon nanotube film electrodes arranged circumferentially about the distal face. The catheter further includes a set of conductors connected to the tip and extending through the body. The catheter is connected to an image display. In the method the tip is introduced into the artery section and images the artery section in front, thereby creating imagery of the artery, which is shown on the image display. This imagery is reviewed and in reliance thereon selectively the electrodes are selectively activated to ablate plaque, while not activating any electrode that would damage any bare arterial wall.

Medical device and treatment method

A medical device and a treatment method, in which energy is accurately applied to a target site by suppressing a positional displacement between an expansion body and a biological tissue. The medical device includes an elongated shaft portion and an expansion body disposed in a distal portion of the shaft portion and configured to expand and contract in a radial direction. The expansion body includes a holding portion having a proximal side holding portion and a distal side holding portion configured to hold the biological tissue, and a movable portion configured to open and close the holding portion.

Medical device

A medical device is disclosed which can suppress torsion of a wire in a circumferential direction in an expansion body formed using the wire. The medical device includes an elongated shaft portion, and an expansion body disposed in a distal portion of the shaft portion, the expansion body configured to expand and contract in a radial direction. The expansion body has wire portions in which a distal portion and a proximal portion are linked with the shaft portion, and a holding portion formed using at least one of the wire portions, and holding a biological tissue. At least one of a proximal side and a distal side of the holding portion has an opening portion formed using a wire portion or formed using a plurality of the wire portions. When the expansion body expands, the wire portion forming the holding portion faces the opening portion.

Ablation system, clamp and method of use

A method and apparatus for ablating tissue are disclosed that comprise positioning two or more bi-directional ablation energy sources in spaced-apart relation in sufficient proximity to the tissue to be ablated so that, upon activation each energy source creates an energy field in the tissue to be ablated. The energy sources are spaced such that the energy fields created by at least one of the activated sources partially overlaps with the energy field created by one or more of the other energy sources. The energy sources are alternately activated and deactivated, so that a substantially constant energy field results where the energy fields created by at least two of the energy sources overlap. While the energy sources are preferably RF energy sources, other energy sources, such as microwave, may be used.

SYSTEMS AND METHODS FOR TREATING TISSUE WITH RADIOFREQUENCY ENERGY

A device for applying radiofrequency energy for sphincter treatment comprising a flexible outer tube, an expandable basket having a plurality of arms movable from a collapsed position to an expanded position, and a plurality of electrodes movable with respect to the arms from a retracted position to an extended position. An advancer is slidably disposed within the outer tube to move the plurality of electrodes to the extended position. An actuator moves the advancer from a first position to a second position to advance the plurality of electrodes. An aspiration tube extends within the outer tube. An assembly includes an aspiration disabler having a first position to enable aspiration from a distal portion of the aspiration tube to a proximal portion and a second position to disable aspiration. 116-. (canceled)17. A method of treating gastrointestinal reflux disease comprising:providing a treatment device having a plurality of electrodes and an assembly having a disabler for disabling aspiration through an aspiration tube extending within the device, the disabler having a first position to enable aspiration from a distal portion of the aspiration tube to a proximal portion of the aspiration tube, the disabler movable to a second position to disable aspiration to facilitate axial and rotational movement of the treatment device within tissue and to limit undesired movement of tissue which can cause overtreatment of tissue and tissue ablation;applying radiofrequency energy to the plurality of electrodes to thermally treat tissue below a tissue ablation threshold and create a plurality of tissue lesions along axially spaced tissue levels within the upper gastrointestinal tract;monitoring tissue temperature throughout the applying of radiofrequency energy; andregulating power ensuring in response to the monitoring of tissue temperature that the tissue temperature does not exceed a predetermined value which would cause tissue ablation and/or tissue necrosis.18. The method ...

DEVICES AND METHODS FOR SHALLOW DEPTH ABLATION

An end effector assembly of a surgical device for shallow depth ablation includes first and second jaw members movable between open and closed positions and including hemicylindrical surfaces that cooperate to define a cylindrical cavity in the closed position for capturing tissue therebetween. At least one electrode array includes a plurality of first and second electrode portions disposed on or within at least one of the hemicylindrical surfaces and extending annularly at least partially thereabout. The plurality of first and second electrode portions are configured to be energized with electrosurgical energy at different potentials to thereby conduct electrosurgical energy between adjacent first and second electrode portions and through captured tissue to affect shallow depth ablation of captured tissue in the closed position of the first and second jaw members. 1. A surgical device for shallow depth ablation , the surgical device comprising: first and second jaw members, at least one of the first or second jaw members movable relative to the other between an open position and a closed position, each of the first and second jaw members including an inner surface, an outer surface, and a hemicylindrical surface recessed relative to the inner surface to define a hemicylindrical cavity, wherein, in the closed position of the first and second jaw members, the hemicylindrical surfaces cooperate to define a cylindrical cavity, the cylindrical cavity extending transversely across the first and second jaw members and open at either end of the cylindrical cavity, wherein, in the closed position of the first and second jaw members, the first and second jaw members are configured to capture tissue within the cylindrical cavity;', 'at least one electrode array including a plurality of first electrode portions and a plurality of second electrode portions, the first and second electrode portions disposed on or within at least one of the hemicylindrical surfaces and extending ...

Capsulotomy Cartridge

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

ULTRAPOLAR ELECTROSURGERY BLADE AND ULTRAPOLAR ELECTROSURGERY PENCIL

An ultrapolar electrosurgery blade and an ultrapolar electrosurgery pencil. The ultrapolar electrosurgery blade has a non-conductive planar member with opposing planar sides, a cutting end, and an opposite non-cutting end, first active and return electrodes located on one opposing planar side, and second active and return electrodes located on the other opposing planar side. 1. An ultrapolar electrosurgery blade comprising:a non-conductive planar member having first and second opposite planar sides;a cutting end, and an opposite non-cutting end;a first active electrode and a first return electrode each located on the first opposite planar side of the non-conductive planar member wherein at least a portion of the first opposite planar side is exposed near the cutting end of the non-conductive planar member; anda second active electrode and a second return electrode each located on the second opposite planar side of the non-conductive planar member wherein at least a portion of the second opposite planar side is exposed near the cutting end of the non-conductive planar member.2. The ultrapolar electrosurgery blade of wherein at least a portion of the first active electrode located on the first opposite planar side mirrors at least a portion of the second return electrode located on the second opposite planar side and at least a portion of the first return electrode on the first opposite planar side mirrors at least a portion of the second active electrode on the second opposite planar side.3. The ultrapolar electrosurgery blade of wherein the non-conductive planar member comprises a ceramic.4. The ultrapolar electrosurgery blade of wherein the first and second active electrodes and the first and second return electrodes each comprise at least one of a stainless steel claim 1 , a copper claim 1 , and a tungsten.5. The ultrapolar electrosurgery blade of wherein the first active electrode claim 1 , the first return electrode claim 1 , the second active electrode claim 1 ...

ULTRAPOLAR TELESCOPIC ELECTROSURGERY PENCIL

An ultrapolar telescopic electrosurgery pencil/handpiece with or without smoke evacuation that is capable of cutting with a sharp non-conductive cutting end of an electrosurgery blade and cutting and coagulating with activation of active and return contacts both contained on each side of the electrosurgery blade. 1. An ultrapolar telescopic electrosurgery pencil comprising:a handpiece member having a first end and a second end;a hollow telescopic member having a first end and a second end wherein at least a portion of the hollow telescopic member is concentrically positioned within the first end of the handpiece member;an electrosurgery blade having both an active contact and a return contact positioned within the first end of the hollow telescopic member;a first hollow conductive tubular member in contact with the active contact of the electrosurgery blade and contained within the hollow telescopic tubular member;a first solid conductive cylindrical member in contact with the return contact of the electrosurgery blade and contained within the hollow telescopic member;a second hollow conductive tubular member contained within the handpiece member such that at least a portion of the first solid cylindrical member is contained within at least a portion of the second hollow conductive tubular member; anda second solid conductive cylindrical member contained within the handpiece member such that at least a portion of the second solid conductive cylindrical member is contained within at least a portion of the first hollow conductive tubular member.2. The ultrapolar telescopic electrosurgery pencil of wherein the handpiece member further comprises a smoke evacuation channel in communication with an interior of the hollow telescopic tubular member for evacuating at least one of smoke and debris from the surgical site.3. The ultrapolar telescopic electrosurgery pencil of further comprising a first support member positioned within the handpiece member and having at least a ...

APPARATUS FOR EFFECTIVE ABLATION AND NERVE SENSING ASSOCIATED WITH DENERVATION

An intravascular catheter for nerve activity ablation and/or sensing includes one or more needles advanced through supported guide tubes (needle guiding elements) which expand to contact the interior surface of the wall of the renal artery or other vessel of a human body allowing the needles to be advanced though the vessel wall into the extra-luminal tissue including the media, adventitia and periadvential space. The catheter also includes structures which provide radial and lateral support to the guide tubes so that the guide tubes open uniformly and maintain their position against the interior surface of the vessel wall as the sharpened needles are advanced to penetrate into the vessel wall. Electrodes near the distal ends of the needles allow sensing of nerve activity before and after attempted renal denervation. In a combination embodiment ablative energy or fluid is delivered from the needles in or near the adventitia to ablate nerves outside of the media while sparing nerves within the media. 1. A catheter for sensing the activity from nerves outside of the lumen of a target vessel of a human body comprising:a catheter body having a distal end for insertion into a patient, a proximal end for controlling the movement of at least one needle, and a central axis extending in a longitudinal direction;a connector configured to connect to external electronic equipment outside of a proximal end of the catheter, said equipment having a sensing subsystem configured for sensing local nerve activity within a patient, and configured to be connected to at least one additional electrode in electrical contact with the patient;at least one needle guiding element adapted to expand outwardly from the catheter body toward the interior wall of the target vessel;at least one needle, the needle having at least one distal electrode, the needle adapted to be advanced outwardly, guided by the at least one needle guiding element to penetrate and advance through the interior wall of the ...

REVERSE IRRIGATION FOR EMBOLIC MITIGATION

Devices, systems, and methods for reverse irrigation of an ablation or treatment site. In one embodiment, a reverse irrigation device comprises at least one ablation electrode and at least one reverse irrigation port, the at least one reverse irrigation port being located at at least one of immediately proximate the at least one ablation electrode and on the at least one ablation electrode, the at least one reverse irrigation port being configured to be in fluid communication with a fluid removal component. A medical system may include an ablation system and a reverse irrigation system that are configured to operate synchronously such that the reverse irrigation system is activated to remove fluid from the ablation site during a period of time during which the ablation system is activated to deliver ablation energy through the at least one ablation electrode to the ablation site. 1. A reverse irrigation device , comprising:at least one ablation electrode; and immediately proximate the at least one ablation electrode; and', 'on the at least one ablation electrode,, 'at least one reverse irrigation port, the at least one reverse irrigation port being located at at least one ofthe at least one reverse irrigation port being configured to be in fluid communication with a fluid removal component.2. The reverse irrigation device of claim 1 , wherein the at least one reverse irrigation port is on the at least one ablation electrode.3. The reverse irrigation device of claim 2 , wherein the at least one reverse irrigation port has an at least substantially circular shape.4. The reverse irrigation device of claim 2 , wherein the at least one reverse irrigation port has an elongate shape.5. The reverse irrigation device of claim 2 , further comprising:an elongate body having a distal portion, a proximal portion opposite the distal portion, and a longitudinal axis,the at least one ablation element including a plurality of ablation electrodes on the elongate body distal portion ...

Pop-Up Laminate Structures with Integrated Electronics

A multi-layer, super-planar laminate structure can be formed from distinctly patterned layers. The layers in the structure can include at least one rigid layer and at least one flexible layer; the rigid layer includes a plurality of rigid segments, and the flexible layer can extend between the rigid segments to serve as a joint. The layers are then stacked and bonded at selected locations to form a laminate structure with inter-layer bonds, and the laminate structure is flexed at the flexible layer between rigid segments to produce an expanded three-dimensional structure, wherein the layers are joined at the selected bonding locations and separated at other locations. A layer with electrical wiring can be included in the structure for delivering electric current to devices on or in the laminate structure. 1. A pop-up laminate device with integrated electronics , comprising:at least one segmented rigid layer with gaps between segments of the rigid layer;at least one flexible layer laminated to the rigid layer and extending across the gaps that separate the segments of the rigid layer to form hinges, wherein the flexible layer is less rigid than the rigid layer; anda plurality of layers of electrically conductive wiring extending across or through the rigid segments, wherein at least one of the layers of electrically conductive wiring extends from rigid segments to form at least one of the following: (a) a bridge across the hinges and (b) a via structure separating layers in the pop-up laminate.2. The pop-up laminate of claim 1 , further comprising an electronic transducer coupled with the electrically conductive wiring.3. The pop-up laminate of claim 2 , wherein the electronic transducer is selected from an electromagnetic actuator configured to generate displacement claim 2 , a light-emitting-diode/phototransistor pair coupled with an optical encoder claim 2 , and a Hall effect sensor.4. The pop-up laminate of claim 2 , wherein the electronic transducer is included ...

MEDICAL DEVICE WITH STRETCHABLE ELECTRODE ASSEMBLIES

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable balloon may be coupled to the catheter shaft. The balloon may be capable of shifting between an unexpanded configuration and an expanded configuration. Electrode assemblies with electrical pathways may be coupled to the balloon. The electrical pathways may be capable of shifting between a serpentine configuration when the balloon is unexpanded to a straighter configuration when the balloon is expanded. 1. A medical device for renal nerve ablation , comprising:a catheter shaft;an expandable member coupled to the catheter shaft, the expandable member having a proximal region, a distal region, and a body extending therebetween, the expandable member being capable of moving between an unexpanded configuration and an expanded configuration; anda plurality of electrode assemblies fixedly attached to the body of the expandable member, the plurality of electrode assemblies each including a stretchable electrical pathway capable of expanding with the expandable member.2. The medical device of claim 1 , wherein the expandable member is a balloon.3. The medical device of claim 2 , wherein the balloon is a compliant balloon.4. The medical device of claim 1 , wherein each of the electrode assemblies includes at least two electrodes.5. The medical device of claim 1 , wherein when the expandable member is in the unexpanded configuration claim 1 , the electrical pathways are arranged in a nonlinear configuration.6. The medical device of any one of claim 5 , wherein the nonlinear configuration comprises a serpentine or sinusoidal configuration.7. The medical device of claim 1 , wherein when the expandable member is in the expanded configuration claim 1 , the electrical pathways expand and move toward a straighter configuration.8. The medical device of claim 1 , wherein the electrode assemblies are printed on the expandable member.9. ...

Esthetic apparatus useful for increasing skin rejuvenation and methods thereof

The present invention provides a device for rejuvenating a region of skin or mucosal tissue, comprising: a pulsed electromagnetic frequency generator; a plurality of electrodes in communication with the pulsed electromagnetic frequency generator and an RF tissue diathermy device. The electrodes apply the pulsed electromagnetic power and the RF tissue diathermy to the tissue, heating it such that one portion of the region of mucosal tissue is maintained at a predetermined temperature range T 1 while another portion of the region of mucosal tissue is at least temporarily maintained at predetermined temperature range T 2 .

Removable tip for use with electrosurgical devices

Disclosed herein are various embodiments of electro surgical devices. In one embodiment, the removable tip includes a first tip member, a second tip member, and an insertion member. The first tip member has a distal end and a proximal end. The second tip member has a distal end and a proximal end where the proximal end of the second tip member is directly coupled to the proximal end of the first tip member. The insertion member is directly coupled with the proximal ends of the first and second tip members, the insertion member for inserting the removable tip within an opening in the electrosurgical tool. Once the insertion member is fully inserted and positioned into the electrosurgical tool, the removable tip is rotatable within the opening in the electrosurgical tool while remaining fully inserted and positioned within the electrosurgical tool.

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

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

Access and tissue modification systems and methods

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

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

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

RENAL NERVE ABLATION CATHETER HAVING TWIST BALLOON

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a catheter shaft. An expandable balloon may be coupled to the catheter shaft. The balloon may be capable of shifting between a folded configuration and an expanded configuration. A support structure may be coupled to the balloon. The support structure may be capable of shifting the balloon toward the folded configuration. A plurality of elongate flexible electrode assemblies may be disposed on the balloon. The elongate flexible electrode assemblies may be oriented at an angle relative to a longitudinal axis of the balloon. 1. A medical device for renal nerve ablation , comprising:a catheter shaft;an expandable balloon coupled to the catheter shaft, the balloon having a proximal end, a distal end, and a length extending therebetween;a support structure coupled to the balloon, the support structure capable of causing the balloon to fold in a pre-determined manner upon refraction of the balloon into a guide catheter; anda plurality of flexible electrode assemblies coupled to the support structure.2. The medical device of claim 1 , wherein the support structure includes a plurality of elongate support elements extending along the length of the balloon.3. The medical device of claim 1 , wherein the elongate support elements extend along the length of the balloon at an angle from a longitudinal axis of the balloon.4. The medical device of claim 1 , wherein the balloon includes a plurality of channels extending along the length.5. The medical device of claim 4 , wherein the elongate support elements are disposed in the channels.6. The medical device of claim 5 , wherein the channels and elongate support elements extend along the length of the balloon at an angle from a longitudinal axis of the balloon.7. The medical device of claim 1 , wherein the electrode assemblies are offset longitudinally.8. The medical device of claim 1 , wherein at least some of the ...

Percutaneous blepharoplasty device and method

Approaches for percutaneous blepharoplasty are provided. An electrosurgical device includes: a hand-piece; a tip connected to the hand-piece; and two needles extending from a distal end of the tip. The hand-piece is structured and arranged to connect to an electrical energy source, and to convey electrical energy from the electrical energy source to the needles in a percutaneous blepharoplasty procedure.

ELECTROSURGICAL DEVICE

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

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. 18-. (canceled)9. A surgical instrument , comprising:a shaft;an end effector supported by a distal portion of the shaft, the end effector including opposed first and second jaw members moveable from a first position in spaced relation relative to one another to at least one subsequent position in which the opposing jaw members cooperate to grasp tissue under pressure with a gap defined therebetween, at least one of the opposing jaw members including an electrode adapted to connect to an electrosurgical energy source, the electrode configured to communicate a series of electrical pulses of energy through tissue grasped between the jaw members to treat tissue;a drive rod operably associated with the shaft and configured to move the jaw members between the first and subsequent positions,wherein the end effector is configured to continually grasp the tissue under pressure to decrease the gap between the opposing jaw members as the tissue shrinks.10. The surgical instrument according to claim 9 , further comprising inter-locking ratchets having a series of inter-locking positions that segment movement of the jaw members into discrete units claim 9 , which claim 9 , in turn claim 9 , imparts discrete closure of the gap as the jaw members close relative to one another.11. The surgical instrument according to claim 10 , wherein each inter-locking position of the ...

RADIOFREQUENCY ABLATION CATHETER WITH OPTICAL TISSUE EVALUATION

Systems and methods for performing RF ablation while monitoring the procedure using low coherence interferometry (LCI) data are described. A catheter includes a distal section, a proximal section, a multiplexer, and a sheath coupled between the distal section and the proximal section. The distal section includes several interconnected optical ports configured to transmit exposure radiation toward a sample and receive radiation that have been reflected or scattered from the sample. The interconnected optical ports are formed on a substrate having rigid sections and flexible sections arranged around the distal section. A holder maintains the interconnected optical elements in a fixed spatial relationship. 1. A catheter comprising:a proximal section; one or more electrodes configured to apply RF energy to a portion of a sample in contact with the one or more electrodes, such that the portion of the sample is ablated,', 'a plurality of interconnected optical ports configured to transmit one or more beams of exposure radiation away from the distal section of the catheter and receive one or more beams of scattered radiation that have been reflected or scattered from the sample, wherein the plurality of interconnected optical ports are formed on a substrate having rigid sections and flexible sections; and', 'a holder configured to maintain the interconnected optical ports in a fixed spatial relationship; and, 'a distal section, the distal section comprisinga multiplexer configured to direct the one or more beams of exposure radiation from the source beam of radiation and combine the one or more beams of scattered radiation.2. The catheter of claim 1 , wherein the plurality of interconnected optical ports are formed on rigid sections of the substrate.3. The catheter of claim 2 , wherein the rigid sections are interconnected by the flexible sections.4. The catheter of claim 1 , wherein the multiplexer is located within the distal section of the catheter.5. The catheter of ...

Method for producing a branch and surgical instrument comprising a tool having a branch

A branch is produced by means of an additive 3D production process for producing a metal part, which comprises at least two parts, namely a support section and a functional section. The metal part is a single-pieced part, in which the support section and the functional section are seamlessly interconnected by means of corresponding connecting webs. After the material is applied, the connecting webs are removed.

MUCOSA DISSECTOR

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

Stereo-thermo-lesioning to treat a patient's neurological condition

This disclosure relates to using stereo-thermo-lesioning (STL) to create lesions at one or more locations in the patient's nervous system at the patient's bedside without general anesthesia. A method that uses STL to treat a patient's neurological condition includes: using a plurality of stereotactically-implanted thermo-coupled multi-contact electrodes to record conduction data within a predetermined theoretical zone of activity within the patient's neurological tissue; detecting abnormal neurological activity of a neurological condition within the conduction data and localize a portion of the predetermined theoretical zone of activity that is responsible for a primary organization of the abnormal neurological activity; creating a lesion at the portion of the predetermined theoretical zone of activity that is responsible for a primary organization of the abnormal neurological activity using at least one contact of the plurality of thermo-coupled multi-contact electrodes.

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.

Applying Bipolar Ablation Energy Between Shorted Electrode Groups

A system includes a catheter, a switching assembly, and a processor. The catheter including an expandable frame, which is coupled to a distal end of the catheter, and multiple electrodes, which are disposed on the expandable frame in a radial geometry. The switching assembly is electrically connected to the catheter, and is configured to electrically short between selected ones of the electrodes. The processor is configured, for first and second disjoint groups of the electrodes, to control the switching assembly to electrically short the electrodes within each of the first and second groups, for applying one or more bipolar ablation energy between the first and second groups when the electrodes are placed in contact with a target tissue of the organ.

SYSTEMS AND METHODS FOR SELECTING, ACTIVATING, OR SELECTING AND ACTIVATING TRANSDUCERS

A graphical representation may be displayed including at least a plurality of transducer graphical elements, each transducer graphical element of the plurality of transducer graphical elements representative of a respective transducer of a plurality of transducers of a transducer-based device. A set of user input may be received including an instruction set to reposition a first transducer graphical element in a state in which the first transducer graphical element is located at a first location in the graphical representation and a second transducer graphical element is located at a second location in the graphical representation, the second location closer to a predetermined location in the graphical representation than the first location. In response to conclusion of receipt of the set of user input, the first transducer graphical element may be repositioned from the first location in the graphical representation to the predetermined location in the graphical representation. 1. A medical device system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:communication instructions configured to cause the data processing device system to communicate, via the input-output device system, with an electrode-based device system comprising a structure and a plurality of electrodes arrangeable in a three dimensional distribution on the structure, the structure and the plurality of electrodes locatable within a bodily cavity;first display instructions configured to cause the input-output device system to display information regarding at least the electrode-based device system, the displayed information including a graphical representation of at least a portion of the electrode-based device system, the graphical ...

SYSTEMS AND METHODS FOR SELECTING, ACTIVATING, OR SELECTING AND ACTIVATING TRANSDUCERS

A graphical representation may be displayed including at least a plurality of transducer graphical elements, each transducer graphical element of the plurality of transducer graphical elements representative of a respective transducer of a plurality of transducers of a transducer-based device. A set of user input may be received including an instruction set to reposition a first transducer graphical element in a state in which the first transducer graphical element is located at a first location in the graphical representation and a second transducer graphical element is located at a second location in the graphical representation, the second location closer to a predetermined location in the graphical representation than the first location. In response to conclusion of receipt of the set of user input, the first transducer graphical element may be repositioned from the first location in the graphical representation to the predetermined location in the graphical representation. 1. A medical device system comprising:a data processing device system;an input-output device system communicatively connected to the data processing device system; anda memory device system communicatively connected to the data processing device system and storing a program executable by the data processing device system, the program comprising:communication instructions configured to cause the data processing device system to communicate, via the input-output device system, with an electrode-based device system comprising a structure and a plurality of electrodes arrangeable in a three dimensional distribution on the structure, the structure and the plurality of electrodes locatable within a bodily cavity, and the structure including a first domed portion and a part other than the first domed portion;first display instructions configured to cause the input-output device system to display information regarding at least the electrode-based device system, the displayed information including a ...

ELECTROSURGICAL SCISSORS

Embodiments are directed to various monopolar and bipolar electrosurgical scissor instruments. A monopolar electrosurgical scissor instrument includes one scissor blade that has an electrically conductive tapered edge, where the tapered edge is insufficiently sharp to shear or otherwise mechanically cut tissue. The scissors also include another electrically insulated scissor blade movably mounted to the first scissor blade. The second scissor blade includes a flat contact surface that is aligned with the tapered edge of the first scissor blade. The scissors further include a scissor body that includes a conductor that transfers electrical energy from an energy source to the tapered edge of the first electrically conductive scissor blade to electrically cut interlaying tissue located between the first electrically conductive scissor blade and the second electrically insulated scissor blade. 1. A monopolar electrosurgical scissor instrument , comprising:a first electrically conductive scissor blade having a tapered edge that concentrates electrical energy transmitted from the electrosurgical scissor instrument to patient tissue during an electrosurgical procedure, the tapered edge being insufficiently sharp to shear or mechanically cut tissue;a second scissor blade movably mounted to the first scissor blade, the second scissor blade comprising a contact surface that is aligned with the tapered edge of the first scissor blade; anda scissor body comprising a conductor that transfers electrical energy from an energy source to the tapered edge of the first scissor blade to electrically cut interlaying tissue located between the first scissor blade and the second scissor blade.2. The monopolar electrosurgical scissor instrument of claim 1 , wherein the tapered edge of the first scissor blade includes a dropdown rounded corner that allows continuous electrosurgical tissue cutting.3. The monopolar electrosurgical scissor instrument of claim 1 , wherein the second scissor ...

ELECTRODE ASSEMBLY WITH THERMAL SHUNT MEMBER

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. An electrode assembly for an ablation catheter with thermal shunting , the electrode assembly comprising:a proximal electrode portion;a distal electrode portion;a filtering element electrically coupling the proximal electrode portion to the distal electrode portion and configured to present a low impedance at a frequency used for delivering ablative energy via the proximal and distal electrode portions; andat least one thermal shunt member in thermal communication with the proximal electrode portion and the distal electrode portion to selectively remove heat from at least one of the electrode assembly and tissue being treated by the electrode assembly when the electrode assembly is activated;wherein the at least one thermal shunt member extends at least partially through an interior of the electrode assembly to transfer heat from the electrode assembly during use;wherein the at least one thermal shunt member is configured to receive at least one fluid conduit extending at least partially through an interior of the at least one thermal shunt member, wherein the at least one thermal shunt member is in thermal communication with the at least one fluid conduit; andwherein the at least one fluid conduit is configured to place the electrode assembly in fluid ...

METHODS OF REMOVING HEAT FROM AN ELECTRODE USING THERMAL SHUNTING

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. A method of heat removal from an electrode assembly during a tissue treatment procedure , the method comprising:delivering energy to an electrode assembly of an ablation system, the ablation system comprising a catheter comprising a distal end, the electrode assembly positioned along the distal end of the catheter;wherein the catheter of the ablation system comprises at least one thermal shunt member along its distal end,wherein the at least one thermal shunt member extends at least partially through an interior of the electrode assembly; andwherein the catheter further comprises at least one fluid passage extending at least partially through the interior of the electrode assembly and an interior of the at least one thermal shunt member;delivering a fluid through the at least one fluid passage; andtransferring heat from the electrode assembly to the fluid via the at least one thermal shunt member to reduce the likelihood of localized hot spots along the distal end of the catheter.3. The method of claim 2 ,{'sup': '2', 'wherein the at least one thermal shunt member is configured to transfer heat while not retaining heat, and wherein the at least one thermal shunt member comprises a thermal diffusivity greater than 1.5 cm/sec;'}wherein the electrode assembly ...

Expandable elements for delivery of electric fields

A method, system, and device for electroporation. A system may include a medical device with a plurality of electrodes borne on an expandable element and an energy generator in communication with the electrodes. The energy generator may have processing circuitry configured to selectively deliver electroporation energy to at least one of the electrodes. The processing circuitry may determine whether an alert condition is present and, if so, cease the delivery of electroporation energy to one or more electrodes identified as the cause of the alert condition and/or prevent the delivery of electroporation energy to the one or more electrodes identified as the cause of the alert condition. The energy generator may also be configured to deliver electroporation energy in a sequence of a plurality of energy delivery patterns to enhance lesion formation.

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 of Sterilization and Treating Infection Using Irreversible Electroporation

A method for treating an infection using irreversible electroporation is presented. The method includes providing an ablation device that has at least one electrode and inserting the ablation device into a target tissue of a patient. The tissue at least partially surrounds the implanted medical device. The outer surface of the medical device is at least partially covered by infectious cells. The method also involves positioning at least one electrode in or near the implanted medical device and delivering electrical pulses to or near the implanted medical device sufficient to irreversibly electroporate the infectious cells.

Catheters, catheter systems, and methods for puncturing through a tissue structure and ablating a tissue region

A percutaneous catheter system for use within the human body and an ablation catheter for ablating a selected tissue region within the body of a subject. The percutaneous catheter system can include two catheters that are operatively coupled to one another by magnetic coupling through a tissue structure. The ablation catheter can include electrodes positioned within a central portion. The ablation catheter is positioned such that the central portion of a flexible shaft at least partially surrounds the selected tissue region. Each electrode of the ablation catheter can be activated independently to apply ablative energy to the selected tissue region. The ablation catheter can employ high impedance structures to change the current density at specific points. Methods of puncturing through a tissue structure using the percutaneous catheter system are disclosed. Also disclosed are methods for ablating a selected tissue region using the ablation catheter.

ABLATION CABLE ASSEMBLIES AND A METHOD OF MANUFACTURING THE SAME

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

ABLATION CABLE ASSEMBLIES AND A METHOD OF MANUFACTURING THE SAME

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

CATHETER WITH SOFT DISTAL TIP FOR MAPPING AND ABLATING TUBULAR REGION

A catheter includes an elongated body having a longitudinal axis, a distal assembly distal the elongated body, the distal assembly having a tapered helical form comprising a larger, electrode-carrying proximal loop and a smaller, softer distal loop, and a shape-memory support member extending through at least the proximal loop. For example, the helical loop subtends at least about 720 radial degrees, with the proximal loop subtending about 360 radial degrees, and the distal loop subtending about 360 radial degrees. The softer distal loop with a straight distal end atraumatically guides the distal assembly into a tubular region so that the larger proximal loop can sit on the ostium of the tubular region with improved electrode and tissue contact. 1. A catheter comprising:an elongated catheter body having a longitudinal axis;a distal assembly distal the elongated body, the distal assembly having a helical form comprising a proximal loop and a distal loop, and a shape-memory support member extending through at least the proximal loop, the proximal loop having a lesser flexibility than the distal loop, and the distal loop having a greater flexibility than the proximal loop;at least one proximal loop ring electrode mounted on the proximal loop;a control handle proximal the elongated body; anda contraction wire having a proximal end in the control handle and a distal end anchored in the proximal loop, the control handle including a first control member configured to actuate the contraction wire to contract the proximal loop.2. A catheter of claim 1 , wherein the helical loop subtends at least about 720 radial degrees.3. A catheter of claim 1 , wherein the helical loop subtends about 765 radial degrees.4. The catheter of claim 1 , wherein the proximal loop subtends at least 360 radial degrees.5. The catheter of claim 1 , wherein the proximal loop subtends about 405 radial degrees.6. The catheter of claim 1 , wherein the distal loop subtends about 360 radial degrees.7. The ...

CATHETER WITH DISTAL SECTION HAVING SIDE-BY-SIDE LOOPS

The catheter allows mapping and/or ablation of the area around two or more PV ostia at the same time, with a single placement of a distal section of the catheter having a 2D configuration resembling an infinity or lazy 8 symbol. The catheter has an elongated catheter body, a distal section having at least a flexible elongated member with shape memory, the member being configured to assume a 2D configuration resembling an infinity symbol, and at least one electrode mounted on the member. The 2D configuration resembles a first loop and a second loop, wherein the first and second loops are side-by-side, generally extending in a common plane. 1. A method of simultaneously mapping or ablating at least two tubular regions , the method comprising: an elongated catheter body;', 'a distal section having at least a first flexible elongated member with shape memory, the first member being configured to assume a 2D configuration resembling an infinity symbol and having first and second portions;', 'at least one first electrode mounted on the first portion of the 2D configuration; and', 'at least one second electrode mounted on the second portion of the 2D configuration;, 'introducing a catheter comprisingcontacting tissue around a first tubular region with a first portion of the 2D configuration, and contacting tissue around a second tubular region with a second portion of the 2D configuration; andsimultaneously ablating or mapping the tissue around the first and second tubular regions with the at least one first electrode and the at least one second electrode.2. The method of claim 1 , wherein the first portion of the 2D configuration resembles a first loop and the second portion of the 2D configuration resembles a second loop claim 1 , wherein the first and second loops are side-by-side claim 1 , generally extending in a common plane.3. The method of claim 1 , wherein the first member has a distal S configuration and a proximal S configuration claim 1 , wherein the S ...

Surgical clip applier comprising an automatic clip feeding system

A surgical clip applier is disclosed which is configured to automatically feed a clip from a clip cartridge once the surgical clip applier is positioned in the patient.

THERMAL DENERVATION DEVICES AND METHODS

A method and apparatus for treating an intraosseous nerve. The method includes positioning a hollow shaft through the cortical shell of a vertebral body and into a cancellous bone region of the vertebral body. The hollow shaft includes an annular wall having a longitudinal bore therein, a proximal portion and a distal portion, and a first window extending transversely through the annular wall. An electrosurgical probe is advanced within the longitudinal bore from the proximal portion toward the distal portion. The electrosurgical probe includes a first treatment element at a distal end of the probe, wherein the first treatment element being in electrical connection with a power supply. The first treatment element is slidably disposed within the longitudinal bore so that the first treatment element is advanced radially outward from the window and shaft to affect treatment of the intraosseous nerve within the cancellous bone region. 1. (canceled)2. A method of treating an intraosseous nerve within a cancellous bone region of a vertebral body , comprising:positioning a bipolar electrosurgical device through a cortical shell of a vertebral body and into a cancellous bone region of the vertebral body, wherein said electrosurgical device comprises an elongate shaft with a distal electrode on the elongate shaft and a proximal electrode on the elongate shaft, the distal and proximal electrodes forming a bipolar heating device, the elongate shaft including a fluid delivery lumen extending therethrough;heating an intraosseous nerve by applying a voltage between said distal and proximal electrodes to thereby heat at least a portion of the cancellous bone region of the vertebral body; anddelivering a cooling fluid to the fluid delivery lumen,wherein said heat is sufficient to denervate the intraosseous nerve within the vertebral body.3. The method of claim 2 , further comprising:using a thermocouple to monitor a temperature within a heating zone produced by the bipolar heating ...

ABLATION SYSTEMS WITH MULTIPLE TEMPERATURE SENSORS

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member. 1. (canceled)2. A cardiac ablation system , comprising:a catheter comprising an electrode assembly, the electrode assembly comprising a proximal electrode and a distal electrode, wherein the proximal electrode is separated from the distal electrode by a gap; andan energy delivery device configured to deliver energy at a frequency within an ablation radiofrequency range to the electrode assembly;wherein the proximal electrode is operatively coupled to the distal electrode using a filtering element at the ablation radiofrequency range such that the proximal electrode and the distal electrode function like a single electrode, and wherein the proximal electrode and the distal electrode function as separate electrodes at high-resolution mapping frequencies;wherein the system is configured to receive signals indicative of temperature from at least one temperature sensor positioned along the proximal electrode or distal electrode;wherein the system is configured to determine, upon execution of instructions stored on a non-transitory storage medium by a hardware processor, temperature measurements from the signals received from the at least one temperature sensor; andwherein the system is configured to adjust one or more treatment parameters of the ablation procedure based, at least in ...

TISSUE ABLATION AND MONITORING THEREOF

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

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

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

MULTIPURPOSE ELECTROSURGICAL DEVICE

A multipurpose electrosurgical device and methods of use are disclosed. In one example, device includes a handpiece and an end effector having a monopolar electrode and a pair of bipolar electrodes. The end effector is coupled to the handpiece and selectively transitionable relative to the handpiece from a first position to a second position. The first position includes the bipolar electrodes extending distally from the device and the monopolar electrode is spaced from a distal end portion of the device. The second position includes the monopolar electrode extending distally and the bipolar electrodes are spaced from a distal end portion of the device. 1. A multipurpose electrosurgical device comprising:a handle;a first arm and a second arm extending distally from the handle, the first and second arms laterally spaced from one another to provide a gap between the first and second arms;an end effector rotatably coupled to the first and second arms;wherein the end effector comprises bipolar and monopolar electrode ends; andwherein the end effector is configured to rotate such that the bipolar and monopolar electrode ends are rotatable with respect to the first and second arms to selectively configure the device in a bipolar mode and a monopolar mode.2. The multipurpose electrosurgical device of claim 1 , wherein when the device is configured in a monopolar mode claim 1 , at least a portion of the bipolar electrode end is received in the gap and the monopolar electrode end extends distally from the first and second arms and when the device is in a bipolar mode claim 1 , at least a portion of the monopolar electrode end is received in the gap and the bipolar electrode end extends distally from the first and second arms.3. The multipurpose electrosurgical device of claim 1 , wherein the bipolar electrode end comprises first and second laterally spaced bipolar electrode tips and the monopolar electrode end comprises a monopolar electrode blade.4. The multipurpose ...

ELECTROSURGICAL DEVICE AND METHOD

An electrosurgical device including an inner catheter, an outer catheter, a balloon, and a plurality of tubular electrodes. The inner catheter extends along a longitudinal axis. The outer catheter includes a first section and a second section each disposed around the inner catheter. The balloon is disposed around the inner catheter and extends between the first and second sections of the outer catheter. The balloon is a tubular member having an outside surface. The plurality of tubular electrodes extends along the longitudinal axis adjacent to the outside surface of the balloon. 1. An electrosurgical device comprising:an inner catheter extending along a longitudinal axis;an outer catheter comprising a first section and a second section each disposed around the inner catheter;a balloon disposed around the inner catheter and extending between the first and second sections of the outer catheter, the balloon comprises a tubular member having an outside surface; anda plurality of tubular electrodes extending along the longitudinal axis adjacent to the outside surface of the balloon.2. The device of claim 1 , wherein the plurality of tubular electrodes each include a fluid path.3. The device of claim 1 , wherein the plurality of tubular electrodes each includes a fluid port disposed between the first and second sections of the outer catheter.4. The device of claim 1 , wherein the plurality of tubular electrodes are expandable.5. The device of claim 1 , wherein plurality of tubular electrodes are configured to deliver electrical energy and fluid.6. The device of claim 1 , wherein the balloon includes opposing first and second ends sealably attached to the inner catheter.7. The device of claim 1 , wherein second section of the outer catheter is slidably disposed around the inner catheter.8. The device of claim 1 , wherein the outer catheter comprises an inner diameter claim 1 , an outer diameter claim 1 , and a wall thickness extending between the inner diameter and outer ...

Ablation systems and methods using heat shunt networks

According to some embodiments, a medical instrument (for example, an ablation device) comprises an elongate body having a proximal end and a distal end, an energy delivery member positioned at the distal end of the elongate body, a first plurality of temperature-measurement devices carried by or positioned within the energy delivery member, the first plurality of temperature-measurement devices being thermally insulated from the energy delivery member, and a second plurality of temperature-measurement devices positioned proximal to a proximal end of the energy delivery member, the second plurality of temperature-measurement devices being thermally insulated from the energy delivery member.

ROBOTIC DEVICES AND SYSTEMS FOR PERFORMING SINGLE INCISION PROCEDURES AND NATURAL ORIFICE TRANSLUMENAL ENDOSCOPIC SURGICAL PROCEDURES, AND METHODS OF CONFIGURING ROBOTIC DEVICES AND SYSTEMS

Example embodiments relate to surgical systems comprising an end-effector assembly and first arm assembly. The end-effector assembly may include a first instrument assembly, which includes a first instrument configurable to move relative to a first axis, and a wrist assembly having a wrist driven portion configurable to be driven so as to move the first instrument relative to a second axis. The first arm assembly may include a first arm assembly joint portion for joining the first arm assembly to a second arm assembly, wrist drive portion configurable to drive the wrist driven portion, and elbow driven portion configurable to be driven so as to move the first arm assembly relative to a third axis. The second arm assembly may include an elbow drive assembly having a first integrated motor and elbow drive portion controllable by the first integrated motor to drive the elbow driven portion. 1. A surgical system for use in performing natural orifice transluminal endoscopic surgery (NOTES) , the surgical system comprising: a first instrument assembly having a first instrument for performing a surgical action, the first instrument configurable to move relative to a first axis; and', 'a wrist assembly securable to the first instrument assembly, the wrist assembly having a wrist driven portion configurable to be driven in such a way as to move the first instrument relative to a second axis, the second axis being different from the first axis;, 'an end-effector assembly, the end-effector assembly having a first arm assembly joint portion for joining the first arm assembly to a second arm assembly;', 'a wrist drive portion configurable to drive the wrist driven portion; and', 'an elbow driven portion, the elbow driven portion configurable to be driven in such a way as to move the first arm assembly relative to a third axis; and, 'a first arm assembly securable to the end-effector assembly, the first arm assembly having a second arm assembly body having a first end and a ...

ELECTROSURGICAL (RF) MEDICAL INSTRUMENTS FOR CUTTING AND COAGULATING TISSUE

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

SYSTEMS, APPARATUSES, AND METHODS FOR TREATING TISSUE AND CONTROLLING STENOSIS

Systems, delivery devices, and methods to treat to ablate, damage, or otherwise affect tissue. The treatment systems are capable of delivering a coolable ablation assembly that ablates targeted tissue without damaging non-targeted tissue. The coolable ablation assembly damages nerve tissue to temporarily or permanently decrease nervous system input. The system, delivery devices, and methods can damage tissue and manage scarring and stenosis. 1. An energy delivery device , comprising:a catheter shaft; a cooling element movable from a collapsed state to an expanded state, and', 'an intercartilaginous energy emitter including a plurality of electrodes circumferentially offset from one another about a longitudinal axis of the ablation assembly, the electrodes being configured to delivery energy to a plurality of target regions of an airway that are spaced apart from one another with respect to a longitudinal axis of the ablation assembly, and wherein the energy emitter and the cooling element are configured to cooperate to form intercartilaginous lesions which are spaced apart from surface tissue of the airway and positioned between cartilaginous rings of the airway., 'and an ablation assembly coupled to the catheter shaft and including'}251-. (canceled) This application is a continuation of application Ser. No. 14/872,212 filed Oct. 1, 2015, which in turn is a continuation of application Ser. No. 13/509,581 filed Aug. 14, 2012, now U.S. Pat. No. 9,149,328 issued Oct. 6, 2015, which is a 371 of PCT/US10/56424 filed Nov. 11, 2010 which claims the benefit of U.S. Provisional Application No. 61/260,349 filed Nov. 11, 2009, each of which is hereby fully incorporated herein by reference.The present invention generally relates to systems, apparatuses, and methods for treating tissue, and more particularly, the invention relates to systems, apparatuses, and methods for eliciting a desired response while controlling stenosis.Pulmonary diseases may cause a wide range of problems ...

ELECTRODE ASSEMBLY HAVING ASYMMETRIC ELECTRODE PLACEMENT

The present disclosure provides ablation catheter systems and electrode assemblies, including electrode baskets, for use in the ablation catheter systems for ablating tissue. The electrode baskets include a plurality of struts having a plurality of electrodes asymmetrically arranged on the plurality of struts such that upon simultaneous energizing of the plurality of electrodes during any single application of the ablation procedure, lesions are created on only one half of less of the circumference of the vessel. 18-. (canceled)9. A method of ablating vessel tissue , the method comprising:introducing an electrode basket into the vessel at a first ablation position, wherein the electrode basket comprises a plurality of struts and a plurality of electrodes, wherein each strut of the plurality of struts includes a linear central portion defined by a pair of living hinges, wherein the plurality of electrodes are arranged on a subset of the plurality of struts, and wherein each electrode of the plurality of electrodes is positioned on the central portion of a respective strut of the subset of the plurality struts; simultaneously energizing the plurality of electrodes such that a first contiguous angular region including less than half of a circumference of a wall of the vessel is ablated;rotating the electrode basket to a second ablation position; andsimultaneously energizing the plurality of electrodes such that a second contiguous angular region different from the first contiguous angular region and including less than half of a circumference of the wall of the tissue is ablated such that lesions in the first contiguous angular region and lesions in the second contiguous angular region do not merge.10. (canceled)11. The method of wherein rotating the electrode basket to a second ablation position such a second contiguous angular region of less than 180 degrees different than the first contiguous angular region of less than 180 degrees is ablated upon comprises rotating ...

MEDICAL DEVICES FOR RENAL NERVE ABLATION

Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for renal nerve ablation. The medical device may include an elongate shaft having a distal region. An expandable member may be coupled to the distal region. A plurality of electrodes may be coupled to the expandable member and a single conductive member may be coupled to each electrode. Where one of the plurality of electrodes is active, the remaining electrodes may be inactive and act as ground or return electrodes. The electrode of the plurality of electrodes that is active may change over time. 1. A method for ablating tissue in a body of a patient within a treatment duration , the method comprising:advancing a medical device into the body of the patient adjacent to the tissue, the device comprising an elongate shaft having a distal region, three or more electrodes coupled to the distal region, a conductive member connected to each of the electrodes, and a controller connected to each of the conductive members;activating each of the electrodes a single electrode at a time during the treatment duration for selected time periods, by the controller supplying power through the conductive member connected to the single electrode during the selected time periods, while automatically maintaining the remaining electrodes during the selected time periods as unpowered so as to act as ground electrodes.2. The method of claim 1 , wherein the treatment duration corresponds to a total pre-determined time.3. The method of claim 1 , wherein the treatment duration corresponds to a set temperature or impedance value of the tissue.4. The method of claim 1 , wherein the selected time periods for the electrodes are a set time that is pre-determined prior to the treatment duration or a time that is variable during the treatment duration.5. The method of claim 1 , wherein the selected time periods for each one of the electrodes within the treatment duration ...

SYSTEMS, APPARATUSES AND METHODS FOR DELIVERY OF ABLATIVE ENERGY TO TISSUE

A system includes a pulse waveform generator and an ablation device coupled to the pulse waveform generator. The ablation device includes at least one electrode configured for ablation pulse delivery to tissue during use. The pulse waveform generator is configured to deliver voltage pulses to the ablation device in the form of a pulsed waveform. A first level of a hierarchy of the pulsed waveform includes a first set of pulses, each pulse having a pulse time duration, with a first time interval separating successive pulses. A second level of the hierarchy of the pulsed waveform includes a plurality of first sets of pulses as a second set of pulses, a second time interval separating successive first sets of pulses, the second time interval being at least three times the duration of the first time interval. 129-. (canceled)30. A method , comprising: (a) a first level of a hierarchy of the pulsed waveform that includes a first set of pulses, each pulse having a pulse time duration, a first time interval separating successive pulses, wherein each pulse of the first set of pulses is a rectangular pulse;', '(b) a second level of the hierarchy of the pulsed waveform that includes a plurality of first sets of pulses as a second set of pulses, a second time interval separating successive first sets of pulses, the second time interval being at least three times the duration of the first time interval; and', '(c) a third level of the hierarchy of the pulsed waveform includes a plurality of second sets of pulses as a third set of pulses, a third time interval separating successive second sets of pulses, the third time interval being at least thirty times the duration of the second level time interval; and, 'generating a pulsed waveform, the pulsed waveform includingdelivering the pulsed waveform to an ablation device.31. A method , comprising: (a) a first level of a hierarchy of the pulsed waveform that includes a first set of pulses, each pulse having a pulse time duration, a ...

Surgical method for tissue removal

A method for removal of tissue from a patient utilizing an electrosurgical instrument. The electrosurgical instrument includes a handle portion having a pair of end effectors configured to remove tissue, connected to and supported by the handle portion for relative movement generally toward one another. One of the end effectors includes a conductive cutting portion that is configured to receive electrical energy from an electrical energy source. The other of the end effectors includes an opposing portion. The opposing portion is brought into a position generally opposing the conductive cutting portion during relative movement of the end effectors toward one another. When electrical energy is conducted through the conductive cutting portion, removal and cauterization of the tissue from the patient is facilitated.

FLEXIBLE HIGH-DENSITY MAPPING CATHETER

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

Proximal Electrode Cooling

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

Forceps having removable tips

An electronic forceps system includes a handle including a pair of pivotable arms distally extending from a proximal end of the handle, at least one arm of the pair of arms having an electrically-conductive arm element connectable to a power source, wherein each arm of the pair of arms comprises a respective pair of arm interfaces, and the electrically-conductive arm element extends to at least one interface of the pair of interfaces. Also provided is a pair of tips, at least one tip of the pair of tips having an electrically-conductive tip element, wherein each tip has a tip interface configured to removably connect to a respective arm interface, each tip has a distal working surface, the electrically-conductive tip element is configured to removably and electrically connect to the electrically-conductive arm element, the electrically-conductive tip element is connected to a heater.

DISENGAGEMENT MECHANISM FOR ELECTROSURGICAL FORCEPS

An electrosurgical forceps comprising: (a.) a pair of working arms comprising; (i.) a first working arm and a second working arm, each of the first working arm and the second working arm having an inner surface; (ii.) one or more electrodes located on the inner surface of the first working arm, the second working arm, or both; and (b.) a selectively engageable activation system comprising; (i.) a control unit; (ii.) an activation switch; and (iii.) a disengagement mechanism; wherein the first working arm and the second working arm are laterally movable relative to each other so that the activation switch is actuated when the disengagement mechanism is in an engaged position by closing the first working arm and the second working arm together, sending a signal to the control unit, which in turn sends a therapy signal to the one or more electrodes; wherein when the disengagement mechanism is in a disengagement position and the working arms are closed, the therapy signal is prevented from being sent from the control unit to the one or more electrodes. 1. An electrosurgical forceps comprising: i. a first working arm and a second working arm, each of the first working arm and the second working arm having an inner surface;', 'ii. one or more electrodes located on the inner surface of the first working arm, the second working arm, or both; and, 'a. a pair of working arms comprising;'} i. a control unit;', 'ii. an activation switch; and', 'iii. a disengagement mechanism;, 'b. a selectively engageable activation system comprising;'}wherein the first working arm and the second working arm are laterally movable relative to each other so that the activation switch is depressed by the disengagement mechanism when the disengagement mechanism is in an engaged position by closing the first working arm and the second working arm together, sending a signal to the control unit, which in turn sends a therapy signal to the one or more electrodes;wherein when the disengagement mechanism ...

Surgical forceps and latching system

A surgical forceps comprising: a first working arm and a second working arm configured to move towards and away from each other; and an electromagnetic latching system; wherein the electromagnetic latching system is configured to create a force that is in a direction aligned with closing of the forceps or opposite to the closing of the forceps when an electromagnetic activation button is depressed.

Medical instrument electrically energized using drive cables

An electrically energized medical instrument uses one or more drive cables to both actuate mechanical components of a wrist mechanism or an effector and to electrically energize the effector. Electrical isolation can be achieved using an insulating main tube through which drive cables extend from a backend mechanism to the effector, an insulating end cover that leaves only the desired portions of the effector exposed, and one or more seals to prevent electrically conductive liquid from entering the main tube. Component count and cost may be further reduced using a pair of pulleys that are shared by four drive cables.