УСТАНОВКА ДЛЯ РАДИОЧАСТОТНОЙ ТЕРАПИИ

Изобретение относится к медицинской технике. Аппаратура для радиочастотной терапии содержит кабель для подсоединения к блоку источника питания и управления и наконечник, обеспеченный электродом. Тепловая камера блока источника питания и управления функционально связана с экраном для воспроизведения полученных данных. Тепловая камера является ориентируемой в направлении области пациента, которая подвергается медицинской или эстетической радиочастотной терапии. Блок источника питания и управления размещен внутри коробообразного корпуса. Экран дисплея расположен на поверхности коробообразного корпуса, которая направлена в сторону оператора, использующего наконечник. Обеспечивается обратная связь для оператора при управлении аппаратурой путем постоянного наблюдения за экраном дисплея и ручного изменения параметров радиочастотной эмиссии (интенсивность и/или частота), что позволяет адаптировать лечение к ощущениям пациента с использованием навыков и опыта оператора. 8 з.п. ф-лы, 1 ил.

ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ

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

ПРИБОР ДЛЯ ОБРАБОТКИ КОЖИ НА ОСНОВЕ ИЗЛУЧЕНИЯ

КАТЕТЕР ДЛЯ ДЕСТРУКЦИИ С ОПТИЧЕСКИ ПРОЗРАЧНОЙ ЭЛЕКТРОПРОВОДЯЩЕЙ ГОЛОВКОЙ

... 1. Катетер, который содержит: ! корпус катетера, и ! концевой электрод с передающей свет оболочкой и пленкой из углеродных нанотрубок на указанной оболочке. ! 2. Катетер по п.1, в котором передающая свет оболочка приспособлена для освещения и улавливания света, а пленка из углеродных нанотрубок приспособлена для деструкции ткани. ! 3. Катетер по п.1, в котором оболочка в целом имеет форму купола. ! 4. Катетер по п.1, в котором оболочка является оптически прозрачной. ! 5. Катетер по п.1, в котором пленка является передающей свет. ! 6. Катетер по п.1, в котором пленка является оптически прозрачной. ! 7. Катетер по п.1, в котором концевой электрод освещается, по меньшей мере, одним излучающим оптическим волокном. ! 8. Катетер по п.1, в котором свет, поступающий на концевой электрод от ткани, воспринимается, по меньшей мере, одним приемным оптическим волокном. ! 9. Катетер по п.1, в котором оболочка ограничивает полость, из которой свет освещает ткань и в которой свет от ткани воспринимается ...

Электрохирургический инструмент

ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ

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

BIOPSIEZANGE MIT TRENNBAREN, PROXIMALEN GRIFF- UND DISTALEN KIEFERTEILEN

EINHEIT AUS BEHEIZTER SPITZE UND KATHETER

ELEKTROCHIRURGISCHE ELEKTRODE

Endoskopische chirurgische Instrumente

ELEKTRO-CHIRURGISCHES GERÄT ZUR ENTFERNUNG VON TUMOREN AUS HOHLORGANEN DES KÖRPERS.

Vorrichtung zum Behandeln von Gewebe eines Gebärmutterhalses

Vorrichtung (1) zum Behandeln von Gewebe des Gebärmutterhalses (100) einer Patientin, umfassend: eine Handhabe (2); einen elektrisch beheizbaren Behandlungskopf (3); und einen Schaft (4), der sich in einer Erstreckungsrichtung (E) von der Handhabe (2) zu dem Behandlungskopf (3) erstreckt und diese verbindet, gekennzeichnet durch einen Abstandshalter (20), der dazu konfiguriert ist, beim Einführen des Schafts (4) in die Vagina (110) einer Patientin eine Berührung des Behandlungskopfes (3) mit den Seitenwänden der Vagina (110) zu verhindern, wobei zwischen dem Behandlungskopf (3) und dem Abstandshalter (20) eine thermische Barriere vorliegt.

KATHETER ZUR ABLATION MITTELS HOCHFREQUENZ

Spannungsfeste, elektrisch isolierende Beschichtungen

Eine Vorrichtung (10) mit einer Oberfläche (11), auf der eine spannungsfeste, elektrisch isolierende Beschichtung (12) vorgesehen ist, ist dadurch gekennzeichnet, dass die Beschichtung (12) mehrlagig ausgebildet ist, mit zumindest einer unteren Schicht (14), die eine Stärke (16) von höchstens 50 um aufweist, und einer oberen Schicht (15), die eine Stärke (17) von höchstens 50 um aufweist, wobei die untere Schicht (14) aus einem harten spannungsfesten Material und die obere Schicht (15) aus einem spaltgängigen spannungsfesten Material besteht.

Resectoscope

A resectoscope has an electrode (29) by means of which an affected part is removed by cauterization or fulguration on excitation with high-frequency current. A sliding body (21) in which there is formed an electrode-receiving opening (30), in which an energy connection (32) is firmly attached, is displaceable along the resectoscope. The near end of the electrode is inserted in the electrode-receiving opening and fastened on the connection. An elastic seal, whose inner diameter is smaller than the outer diameter of an insulating coating (31) with which the electrode is provided, is provided on the inlet of the electrode-receiving opening. As a result, penetration of water droplets or blood into the electrode-receiving opening (30) is prevented. ...

Electrosurgical device

NOBLE METAL-POLYMER COMPOSITES FOR USE IN MICROELECTRODE STIMULATION ARRAYS

PURPOSE: To obtain a composite having biocompatibility and flexibility and useful for an electrode like a membrane fine electrode by pretreating at least one surface of a polymer support with a polyimide or the like by sputter-etching and bonding a noble metal to this surface by sputtering. CONSTITUTION: A product 12 performing the polyimide film etching of a polymer support is placed on a cathode 14 and a polyimide is subjected to sputter-etching to perform proper pretreatment. The pretreated product 26 is placed on an anode 28 and a pure platinum metal is bonded to the surface of the polyimide film by sputtering. The obtained composite is used to evaluate sheet resistance and peel strength to obtain sheet resistance before boiling saline soln. treatment of about 3 ohm/square or less, sheet resistance after boiling saline soln. treatment of about 9 ohm/square or less and peel strength after boiling saline soln. treatment of 0.05 kg/mm or more. By this constitution, a composite having special ...

Bipolar electrosurgical instrument with four electrodes

A bipolar electrosurgical instrument comprises first 4 and second 5 jaws, first jaw 4 has an inner surface 7 which cooperates with the inner surface 21 of the second jaw 5 for grasping tissue. A first coagulating electrode 13 is on the inner surface of one of the jaw members, and a second coagulating electrode 15 is on the inner surface of one of the jaw members, An insulator 9 separates the two electrodes. A third cutting electrode 41 is on the inner surface of the first jaw, and a fourth electrode 19 is provided on an outer surface 8 of the first jaw. The instrument is capable of selectively causing coagulation of tissue between the first 13 and second 15 electrodes, cutting the trapped tissue contacted by the third electrode 41, and the cutting or coagulation of tissue contacted by the fourth electrode 19. Alternatively, the third and fourth electrodes may be integrally formed (50; see fig 10).

Electronsurgical instrument

Electrically conductive non-stick coating

In a preferred embodiment, there is provided a conductive non-stick electrode for use with a hemostatic tissue cutting scalpel wherein, a first layer of conductive material having a textured working surface for contacting tissue is adherently deposited along the cutting edge of the scalpel, and a second coating of non-stick material is deposited thereon at least partially filling the textured surface, so that portions of the conductive material are exposed and the electrode is thereby conductive along said working surface but non-sticking while in contact with tissue.

Electrically conductive non-stick coatin

An electrically conductive non-stick coating for a substrate for making electrical contact with external materials comprising a layer of conductive material adherently deposited on the substrate and a superposed layer of organic non-stick material on said conductive layer being chemically bonded thereto.

Electrosurgical instrument

A probe electrode

A probe electrode 2 for use with an electrical current device, the probe electrode 2 comprising a first and a second electrically conductive electrode member 4&6, each comprising: an intermediate portion; a proximal end 8; and a respective distal end 14,16. The electrode-members 4&6 are coupled together at their proximal ends 8 and their intermediate portions and their distal ends 14,16 are spaced apart. Each distal end 14&16 define a contact surface comprising a cylindrical portion 18 terminated in a rounded end 20. Preferably, an outer layer of electrically insulating material 12 covers each electrode-member’s intermediate portion. The rounded end 20 of each contact surface may have a pre-determined radius. The first electrode-member 4 may have a longer intermediate portion than that of the second electrode-member 6, so that the first electrode-member’s distal end 14 extends axially beyond the second electrode-member’s distal end 16. Also, an electrical current therapy device comprising ...

Non-stringy adhesive hydrophilic gels

ABLATION LOOP FOR THE FORECOURT RING WITH EXPAND-CASH THRUST DEVICE

ELECTRICALSURGICAL LAPAROSKOPI KAUTERISATIONSELEKTRODE

BIPOLAR TWEEZERS.

ELECTRODES FOR THE PRODUCTION OF CERTAIN SAMPLES OF PATHOLOGICALLY CHANGED FABRIC

Electrosurgical resector tool

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

Matter manipulator with conductive coating

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

Microblade structure and method of treating tissue

Structures for treating tissue with high-frequency energy, methods of making a structure for treating tissue with high-frequency energy, and methods of treating tissue with high- frequency energy. A structure for use in treating tissue may include multiple microblades composed of an electrical conductor. Each of the microblades may include a shaft and a tip arranged adjacent to an end of the shaft. The tip includes multiple surfaces that surround a solid core of the tip and at least two of the surfaces may taper toward the end of the shaft.

Large volume tissue reduction and removal system and method

A tissue removal system for extracting a tissue specimen from a patient is disclosed. The system has a retrieval bag, a first electrode, and a return electrode. The retrieval bag has a flexible container with an opening. The first electrode is coupled to an interior of the flexible container, and has a conductive wire with an exposure area, a first load-bearing area, a coating having a first active electrode surface area, and an impedance that is greater than an impedance of the conductive wire. The first active electrode surface area is less than the exposure area. The coating is configured to degrade during application of electrosurgical power and wherein the degradation expands the first active electrode surface area during the application of the electrosurgical power.

Endoscopic biopsy forceps devices with selective bipolar cautery

Electrosurgical instrument reducing current densities at an insulator conductor junction

ELECTROSURGICAL INSTRUMENT REDUCING CURRENT DENSITIES AT AN INSULATOR CONDUCTOR JUNCTION 5 An electrosurgical instrument (10) having opposing end effectors (22, 24) and a handle (16, 18) for effecting movement of the end effectors (22, 24) relative to one another, includes a pair of electrodes (110, 120) each including an electrically conductive surface (116) (e.g., which can be dimensioned for sealing, clamping and/or cutting), an insulating substrate (111) having a first edge, and an insulating layer (140) [0 positioned in a channel formed by the electrically conductive surface (116) within the first edge between the conductive surface (116) and the first edge of the insulating substrate (111). The insulating layer (140) has a portion proximal to the electrically conductive surface (116) and a portion distal from the electrically conductive surface (116) and a gradient such that the proximal portion has a lower dielectric strength than 15 the distal portion. A coating (137) on one of ...

Electrosurgical electrode with electric field concentrating flash edge

An electrode tip for use in performing electrosurgical operative procedures to concentrate electrical energy communicated to the patient tissue is disclosed. The electrode tip includes a main body that can receive electrical energy from an electrosurgical generator. The main body includes a working surface defining a flash edge. The working surface communicates the electrical energy to patient tissue during an operative procedure. The flash edge concentrates the electrical energy as it is communicated to the patient tissue. The concentration of the electrical energy from the flash edge reduces excessive tissue damage surrounding an incision site and improves the efficiency of the electrode tip.

Electrosurgical pencil with drag sensing capability

Coated bipolar electrocautery

Ultrasonic and electrosurgical devices

Disclosed are ultrasonic and electrosurgical devices. The disclosed embodiments include ultrasonic blades comprising various grasping features, devices configured to prevent ingress of surgical matter, e.g., fluid and tissue, in the space between an ultrasonic blade and an inner or outer tube distal of the distal seal, alternate closure mechanisms for ultrasonic devices, ultrasonic transducer rotation limiters to limit the rotation of an ultrasonic transducer, ultrasonic transducer rotation systems to provide unlimited continuous rotation of an ultrasonic device, integrated ultrasonic instrument electrically connected to provide RF spot coagulation with an ultrasonic (RF) generator, and coated ultrasonic/RF blades.

System and method of controlling power delivery to a surgical instrument

A thermal surgical instrument having a system to control the delivery of power from an energy source to active element located on a tip. The system for controlling delivery to the tip may include a control algorithm which uses on or more measurements, such as tip current, SWR, and rapid changes in reflected power, to manage power without affecting cutting efficacy, and in a manner that may be imperceptible by a surgeon. The system may utilize a state machine to determine the current environment in which the tip may be in. Power delivered to the tip may be selectively managed according to a fixed power index or a repeatedly executed power profile.

Sphincterotome cutting wire improvement

A sphincterotome having a portion of its drive wire coated with a material selected from poly- ...

Hemostatic bi-polar electrosurgical cutting apparatus and method

Surgical instruments having auto-regulating heater

AN ELECTRODE FOR AN ELECTROSURGICAL PENCIL, A METHOD OF MAKING AN ELECTRODE, AND AN ELECTROSURGICAL PENCIL WITH SUCH AN ELECTRODE

There is disclosed an electrode for an electrosurgical pencil, the electrode comprising an elongated body made of a conductive material and extending in an axial direction from a proximal end to a distal end, the proximal end configured for engaging the electrosurgical pencil and the distal end forming a blade configured for cutting or coagulation of tissue by electrosurgical energy received from the pencil, the blade being defined by two main surface portions on opposite sides of an intermediate plane and joined by an edge extending through the intermediate plane, wherein the edge comprises a smooth-part, and wherein the main surface portions have a first surface roughness, the smooth-part of the edge has a second surface roughness being lower than the first surface roughness, and where at least the main surface portions are covered by a surface coating.

Circumferential ablation device assembly and method

RATCHET LOCKING MECHANISM FOR SURGICAL INSTRUMENTS

Steerable loop structures for supporting diagnostic and therapeutic elements in contact with body tissue

HEMOSTATIC BI-POLAR ELECTROSURGICAL CUTTING APPARATUS AND METHOD

SURGICAL INSTRUMENT HAVING SELF-REGULATING RADIANT HEATING OF ITS CUTTING EDGE AND METHOD OF USING THE SAME

The cutting edge of a scalpel blade is heated to an elevated preselected constant operating temperature for cutting tissue with simultaneous hemostasis by radiant heating of the blade in the region along the cutting edge. Radiant energy is contained within the blade by a reflective coating over the transparent or translucent blade material. Heating along the cutting edge is provided by the disposition of a radiation-absorptive material beneath the reflective coating in the region along the cutting edge. Selective heating of regions of the cutting edge that are locally cooled by contact with tissues during surgical cutting is provided for by fabricating the radiation-absorptive element of the blade of a thermochromic material that exhibits a substantial increase in absorption coefficient for a temperature decrement within the operating temperature range.

ELECTROSURGERY SURGICAL BLADE

AN ELECTRODE FOR AN ELECTROSURGICAL PENCIL AND A METHOD OF MAKING AN ELECTRODE

An electrode for an electrosurgical pencil, the electrode comprising an elongated body made of a conductive material and extending in an axial direction from a proximal end to a distal end, the proximal end configured for engaging the electrosurgical pencil and the distal end forming a blade configured for cutting or coagulation of tissue by electrosurgical energy received from the pencil, the blade being defined by two main surface portions on opposite sides of an axially extending intermediate plane and joined by an edge extending through the intermediate plane. To concentrate electrical energy at the edge and thereby facilitate a more precise cutting and less burnt tissue sticking to the electrode, the main surface portions has a first surface roughness, the edge has a second surface roughness being lower than the first surface roughness, and at least the main surface portions are covered by a surface coating comprising silicone.

ATRIAL ANNULUS ABLATION LOOP WITH EXPANDABLE PUSHER

An apparatus that facilitates the creation of circumferential lesions in body tissue. The apparatus includes a first probe having a loop structure that supports electrodes or other operative elements against the body tissue and a second probe with an expandable push structure that may be used to urge the loop structure against body tissue.

LOOP STRUCTURES FOR SUPPORTING DIAGNOSTIC AND THERAPEUTIC ELEMENTS IN CONTACT WITH BODY TISSUE AND EXPANDABLE PUSH DEVICES FOR USE WITH SAME

An apparatus that facilitates the creation of circumferential lesions in body tissue. The apparatus includes a first probe having a loop structure that supports electrodes or other operative elements against the body tissue and a second probe with an expandable push structure that may be used to urge the loop structure against body tissue.

MATTER MANIPULATOR WITH CONDUCTIVE COATING

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

ELECTROSURGICAL RESECTION INSTRUMENT

An electrosurgical resection instrument (100) for applying to biological tissue radiofrequency electromagnetic energy has a protective hull (120) comprising a shaped piece of dielectric material mounted to cover an underside of an instrument tip (104) of the instrument (100). The protective hull (120) acts as a shield to protect tissue that may lie under the instrument tip (104) from damage during treatment. The instrument (100) may be particularly useful in procedures performed in a gastrointestinal tract, where bowel perforation is a concern, or in the pancreas, where damage to the portal vein or the pancreatic duct may occur when a tumour or other abnormality is being resected, dissected or removed.

HOT TIP CATHETER ASSEMBLY

A hot tip catheter assembly (3) is disclosed which resolves atherosclerotic plaque buildup in vivo. The catheter has a heater (12), a cap (14), thermocouple, power leads (22a, 22b), thermocouple leads (20), and a central distal lumen (17) to position the catheter within the artery. The catheter tip has a thin, non-adhesive coating (25) of a hard, heat-conducting material. The thermocouple is used to continuously evaluate the temperature at the tip of the catheter, and the temperature is then regulated by a computer controlled feedback system. The catheter can completely melt the buildup without damage to the artery by direct contact with the plaque, without use of balloon catheter angioplasty. Until further notice, any designation of "DE" in any international application whose international filing date is prior to October 3, 1990, shall have effect in the territory of the Federal Republic of Germany with the exception of the territory of the former German Democratic Republic.

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.

CURVILINEAR ELECTRODE AND METHOD FOR FORMING LESIONS

Systems and associated methods form larger and deeper lesion patterns by shaping a support body with multiple electrodes in ways that increase the density of the electrodes per given tissue area. The support body can carry either elongated, continuous electrodes or arrays of non-contiguous, segmented electrodes.

ELECTROSURGICAL INSTRUMENT

An electrosurgical cutting device comprises an instrument body, and first and second cutting blades, at least one of which is pivotally mounted on the body to execute a scissor action with respect to the other blade. Electrical supply conductors associated with the body supply an electrosurgical voltage to the first and second blades. The first blade is a composite blade comprising a conductive outer electrode, an inner conductive layer, sandwiched between the outer electrode and the inner layer, an insulating layer. The supply conductors are connected respectively to the outer electrode and to the inner layer.

TISSUE HEATING AND ABLATION SYSTEM

Systems and methods employ an energy emitting electrode (34) to heat tissue. The systems and methods derive a temperature prediction for a future time period. The systems and methods control the application of energy to the energy emitting electrode (34) based, at least in part, upon the temperature prediction.

ELECTROSURGICAL GENERATOR ADAPTORS

Adaptors are provided for use with electrosurgical bipolar instruments and standard commercially available electrosurgical generators that reduce coagulum buildup and sticking on electrosurgical instruments. A first type of adaptor converts a high voltage, high crest factor output voltage waveform typical of conventional electrosurgical generators to a more desirable lower voltage, lower crest factor regime. A second type of adaptor limits the peak open-circuit voltage supplied by a conventional electrosurgical generator to an electrosurgical instrument.

SYSTEMS AND METHODS FOR ABLATING BODY TISSUE USING PREDICTED MAXIMUM TISSUE TEMPERATURE

This invention is systems and methods that ablate body tissue using an electrode (16) for contacting tissue at a tissue electrode interface to transmit ablation energy at a determinable power level. The systems and methods include an element (50) to remove heat from the electrode (16) at a determinable rate. The systems and methods employ a processing element (98) to derive a prediction of the maximum tissue temperature condition occurring beneath the tissue electrode interface. The processing element (98) controls the power level of ablation energy transmitted by the electrode (16), or the rate at which the electrode (16) is cooled, or both, based, at least in part, upon the maximum tissue temperature prediction.

ELECTRO-SURGICAL BLADE WITH A CONDUCTIVE, NON-STICK COATING

An electrosurgical blade (100) is provided having a ceramic (104) coating which is conductive, flexible and provides a surface which inhibits the buil d up of charred tissue. These properties enable the electrosurgical blade to deliver controlled amounts of radio-frequency energy to tissue. The manufacturing process produces a coating of titanium nitride on a stainless steel blade which is amorphous, enabling the electrosurgical blade to bend with the blade in order to perform a wide variety of surgical procedures without damaging the coating. The electrosurgical blade can therefore be use d to efficiently cut, coagulate, fulgurate and desiccate tissue. While the bla de is primarily used in the monopolar mode, the present invention also encompasses at least two electrosurgical electrodes having the same ceramic coating as the electrosurgical blade, and used in the bipolar mode for coagulation.

APPARATUS FOR ELECTRO-SURGICAL TISSUE REMOVAL

An electro-surgical device (11) for performing tissue resection and cauterization includes an elongated body, a pair of arms extending from a distal end of the elongated body, and an electrode (12) in communication with the pair of arms. The elongated body is adapted to be coupled to a source of energy at a proximal end. The electrode (12) has a first region coated with an insulative coating and a second region for focusing energy emission. The coating can be a diamond-like carbo n coating or other coating exhibiting resistance to cracking at high temperatures and high voltages. The coating can be deposited on a ba se section of a loop electrode (14) while the end sections remain free of the coating. Alternatively, the coating can be unevenly deposited on the electrode. In other embodiments, the electrode can comprise a rollerball and the insulative coating can be deposited on selecte d or random portions of the rollerball. The insulative coating prevents energy loss to fluid and tissue ...

SURGICAL INSTRUMENT.

Medical electrocoagulation instrument

The instrument comprises a stainless steel needle (1) comprising a bent tubular body (2) covered with a coat of silicone or insulating and thermally resistant varnish and a bared active tip (3) consisting of the end of a single electrical supply wire (7) which is held in the tubular body and is intended to be connected to one pole of a low-voltage HF bipolar current source. A handling grip (5, 6) through which the single wire (7) passes is fixed to the body (2) of the needle. Current is returned to the second pole of the source via a conductive plate placed on the skin of the patient. The needle (1) is intended to be introduced into a vessel via a minor incision in the skin and the damaged tissue of a varix can be burnt by intraluminal action, preserving the aesthetic quality of the operation. ...

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.

Device of comprising elettroterapiaelettroterapia an control system.

La presente invenzione si riferisce ad un dispositivo di elettroterapia comprendente un sistema di controllo di un dispositivo di elettroterapia comprendente un alimentatore (1), un generatore (2) di un segnale elettrico in radio frequenza (RF), un elettrodo neutro (3) ed un elettrodo capacitivo (4) e/o resistivo (5) collegati al generatore (2) e destinati ad applicare il segnale elettrico per contatto al corpo di un paziente. Il sistema comprende un modulo di controllo software (6) collegato al generatore (2), atto a trasmettere un comando di abilitazione o disabilitazione del segnale elettrico (RF), ed un circuito di rilevamento e controllo hardware (7), atto a rilevare un valore anomalo di detto segnale elettrico ed a trasmettere un comando di spegnimento del generatore (2) in presenza di detto valore anomalo, dove il circuito di rilevamento e controllo hardware (7) forma un secondo anello di controllo, ed un primo (µ 1 ) ed un secondo (µ 2 ) microprocessore del modulo di controllo software ...

Control system of a elettroterapiaelettroterapia device.

La presente invenzione si riferisce ad un sistema e ad un metodo di controllo di un dispositivo di elettroterapia comprendente un alimentatore (1), un generatore (2) di un segnale elettrico in radio frequenza (RF), un elettrodo neutro (3) ed un elettrodo capacitivo (4) e/o resistivo (5) collegati al generatore (2) e destinati ad applicare il segnale elettrico per contatto al corpo di un paziente. Il sistema comprende un modulo di controllo software (6) collegato al generatore (2), atto a trasmettere un comando di abilitazione o disabilitazione del segnale elettrico (RF), ed un circuito di rilevamento e controllo hardware (7), atto a rilevare un valore anomalo di detto segnale elettrico ed a trasmettere un comando di spegnimento del generatore (2) in presenza di detto valore anomalo.

ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ

Раскрыто улучшенное средство изоляции электрохирургических инструментов и его использование в электрохирургических инструментах для уменьшения выделения дыма в месте проведения хирургического вмешательства. Применен изоляционный слой, который может включать в себя керамический материал, который, по существу, герметизирован покрытием, образованным, по существу, материалом, основанным на полидиорганосилоксанах или их производных, которое отверждено предпочтительно с помощью температур, превышающих примерно 150°F. В одном объекте изобретения применен изоляционный слой, имеющий теплопроводность примерно 1,2 Вт/см2K и силу диэлектрического сопротивления по меньшей мере около 50 В. Такой изоляционный слой предпочтительно может содержать один или более изоляционных материалов с порами, которые герметизированы, чтобы препятствовать попаданию биологических материалов в поры, герметизирующим материалом, предпочтительно содержащим один или более силикатных материалов или материалов, которые образуют ...

УСОВЕРШЕНСТВОВАННЫЙ ЭЛЕКТРОХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ

Предложены усовершенствованный электрохирургический инструмент (10) и способ уменьшения дымообразования на месте хирургического вмешательства. Электрохирургический инструмент содержит металлический корпус (20), имеющий внешний изолирующий слой (30) для уменьшения испускания тепловой и электрической энергии из нефункциональных частей инструмента. В одном аспекте изобретения используется изолирующий слой, имеющий теплопроводность примерно 1,2 Вт/см2 ƃ°К и электрическую прочность диэлектрика по меньшей мере примерно 50 В. Такой изолирующий слой преимущественно может содержать кремний и/или углерод. В другом аспекте изобретения предусмотрен металлический корпус, который имеет коэффициент теплопроводности по меньшей мере примерно 0,35 Вт/смƃ°К и который преимущественно может содержать металл, выбранный из группы, состоящей из золота, серебра, алюминия, меди, тантала, колумбия и молибдена. В еще одном аспекте металлический корпус может включать в себя промежуточный слой, который ограничивает ...

MEDICAL DEVICE, METHOD OF ITS MANUFACTURE AND ITS USE

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

Dispositif d'étanchement/coagulation de sang hors de vaisseaux sanguins

Ce dispositif fait passer un courant à haute fréquence entre une pince 1, le vaisseau sanguin étant, maintenu entre les extrémités de la pince, pour être cautérisé et pour coaguler et étancher le sang, le dispositif étant caractérisé en ce que le segment de la pince 1 maintenant le vaisseau sanguin comprend un élément de contact A avec le vaisseau sanguin, constitué d'une matière frittée isolante de l'électricité, ayant une faible conductivité thermique, et l'élément de contact 10a avec le vaisseau sanguin est muni sur sa surface d'électrodes exposées selon un rapport de superficie compris entre 5 et 60 % de la surface totale de l'élément de contact avec le vaisseau sanguin. Le segment de la pince 1 en contact avec le vaisseau sanguin n'est pas chauffé de façon excessive, ce qui évite la brûlure du vaisseau sanguin. Cela élimine tout échec d'étanchement dû à l'enlèvement d'une partie de vaisseau sanguin cautérisé et garantit une excellente coagulation et un excellent étanchement. En outre ...

REVETEMENT ANTI-ADHERENT CONDUCTEUR DE L'ELECTRICITE ET LAME DE COUPE ELECTROCHIRURGICALE MUNIE DE CE REVETEMENT

L'INVENTION SE RAPPORTE AUX REVETEMENTS ANTI-ADHERENTS. ELLE CONCERNE NOTAMMENT UN REVETEMENT ANTI-ADHERENT CONDUCTEUR DE L'ELECTRICITE A APPLIQUER SUR UN SUBSTRAT POUR ASSURER UN CONTACT ELECTRIQUE AVEC DES MATIERES EXTERIEURES, CARACTERISE EN CE QU'IL COMPREND UNE COUCHE DE MATIERE CONDUCTRICE DEPOSEE DE FACON ADHERENTE SUR LE SUBSTRAT ET UNE COUCHE DE MATIERE ORGANIQUE ANTI-ADHERENTE SUPERPOSEE A LA COUCHE CONDUCTRICE ET LIEE CHIMIQUEMENT A CELLE-CI. UTILISATION DANS LA FABRICATION DE SCALPELS ELECTROCHIRURGICAUX.

CONDUCTING ANTIBLOCKING COATING OF ELECTRICITY AND BLADE OF CUT ELECTROCHIRURGICALE PROVIDED WITH THIS COATING

SURGICAL INSTRUMENT COMPRISING FOR ITS EDGE A HEATING BY RADIATION

MEDICAL DEVICE FOR LOCALIZED APPLICATION OF HEAT

DISPOSITIVO MEDICO PARA A APLICACAO LOCALIZADA DE CALOR

A DISPOSABLE PATCH FOR PERSONAL AESTHETIC SKIN TREATMENT

An apparatus for personal aesthetic skin treatment by RF voltage. The apparatus includes an RF voltage supply and a disposable patch with an assembly of individual electrodes operative to contact segments of the skin and deliver to each contact RF voltage. The RF voltage may be supplied to each of the electrodes according to a predetermined experimentally established skin treatment protocol. The treatment RF current generated by the applied RF voltage heats the skin and is applied intermittently to different electrodes being in contact with the skin in an order and duration sufficient to cause the desired skin effect and enable proper cooling of earlier treated skin segments. The selected protocol ensures safe non-ablative skin treatment parameters.

MEDICAL DEVICE HAVING LAMINATE-COATED BRAID ASSEMBLY

An elongate deployabie, and optionally deflectable, medical device includes a braid assembly having a dua!-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element and can be fabricated wholly or partially from substantially flat members to improve so-called pushability and torque transfer characteristics and to provide larger, or improved, bonding location(s) for ring electrodes, sensors and the like.

LOCALIZED HEAT APPLYING MEDICAL DEVICE

A medical device for applying localized heat to a portion of a patient's body. Generally, the device includes a light transmitting conduit (12) and a heat generating element (18) which converts transmitted light into heat. A suitable exterior tube (158) can also be provided for guidance, strength and delivery of fluids. The medical device can be used to cauterize or destroy tissue, or alter or remove deposits (154) from lumens. The medical device can also serve as part of a system which provides the light and measures the temperature of the element.

AN ELECTROSURGICAL INSTRUMENT AND AN ELECTROSURGERY SYSTEM INCLUDING SUCH AN INSTRUMENT

In an electrosurgical system which is operable within the frequency range of from 100kHz to 50 MHz and which has a handheld instrument with an elongate instrument shaft, the distal end of the shaft carries a bipolar electrode assembly for use in a conductive fluid field. The electrode assembly has an active electrode and, set back from the active electrode, a return electrode coated with an insulative dielectric layer. The insulative layer may be made of a plastics or a ceramic material and acts as the dielectric of a capacitor when the electrode assembly is immersed in the conductive fluid. One of the effects of the insulative layer is to provide a more uniformly distributed electric field over the return electrode than is obtained with an exposed return electrode, yielding improved tissue desiccation and vaporisation characteristics. The active electrode may have a similar dielectric covering.

COMBINATION MONOPHASIC ACTION POTENTIAL/ABLATION CATHETER AND HIGH-PERFORMANCE FILTER SYSTEM

A combination catheter for both detecting monophasic action potentials and ablating surface tissue in an in vivo heart of a patient is provided. The apparatus includes a catheter probe having a terminal tip portion (10) and an electrode (20) carried on the tip such that a portion of the tip electrode (20) is exposed to ambient. A reference electrode (50) is spaced along the tip from the first electrode for supplying a reference potential signal. An ablating electrode (30) is located adjacent to but electrically insulated from both the tip (20) and reference (50) electrodes for providing electromagnetic energy to the tip. The electrodes are electrically connected to the proximal end of the catheter through individual conductors or wires (22, 32, and 50) that run through an insulated cable. An electronic filter is provided to permit the recording of MAPs during ablation without radiofrequency interference. The catheter may also include standard mapping and/or pacing electrodes (80 and 75) ...

SYSTEMS CONTAINING TEMPERATURE REGULATED MEDICAL DEVICES, AND METHODS RELATED THERETO

Disclosed are systems for the application of heat to an area of the body of a mammal, a system including a device fabricated from or coated with a material comprising of a non-metal matrix and susceptor particles, a non-invasive inductor and magnetic circuit for heating the particles by transmitting an alternating magnetic field (AMF), and an alternating current generator that provides an alternating current to the inductor. Also disclosed are methods related to the non-invasive application of heat to mammalian tissue. These systems and methods are useful where heat must be applied in a controlled manner to avoid undesired damage to tissue.

Hemostatic Surgical Blade, System and Method of Blade Manufacture and Method of Use

A hemostatic surgical blade is formed of five symmetrically layers. A martensitic stainless steel core with oppositely disposed faces is bonded to layers exhibiting a high thermal conductivity which, in turn, are supported by buttressing layers of austenitic stainless steel. A thin aluminum layer is deposited on one side of blade blanks to enable chemical reaction bonding to electrically insulative dielectric inks formulated for use with aluminum substrates. The blade is heated by a blade heating circuit that is manufactured by thick-film printing and firing an electrically resistive heating element layer and an electrically conductive leads on an electrically insulative dielectric layer with all layers subsequently covered by a thick-film printed electrically insulative dielectric overcoat. Tissue contacting portions of blade are coated with a very thin non-stick coating. The surgical blade operates at a temperature below the threshold for pyrolysis and/or thermal decomposition of human ...

Flexible tissue ablatin elements for making long lesions

Devices and methods for ablating body tissue. The devices include a support body and at least one elongated electrode. Adjacent windings are spaced apart to impart enhanced flexibility to the elongated electrode.

Method for mapping, ablation, and stimulation using an endocardial catheter

Endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart having blood therein comprising a catheter probe with proximal and distal extremities and having an elongate tubular member with at least one lumen extending therethrough extending the length thereof and with a distal extremity. A plurality of longitudinally and radially spaced apart electrodes are provided. An expandable device is secured to the distal extremity of the flexible elongate tubular member and is movable between a contracted position and an expanded position. The electrodes are mounted on the expandable device whereby when the expandable device is moved to the expanded position in a chamber of the heart the electrodes are moved into engagement with the wall forming the chamber of the heart in which the expandable device is disposed. An elongate element is coupled to the expandable device for moving the expandable ...

Electrosurgical resection instrument

An electrosurgical resection instrument for applying to biological tissue radiofrequency electromagnetic energy has a protective hull comprising a shaped piece of dielectric material mounted to cover an underside of an instrument tip of the instrument. The protective hull acts as a shield to protect tissue that may lie under the instrument tip from damage during treatment. The instrument may be particularly useful in procedures performed in a gastrointestinal tract, where bowel perforation is a concern, or in the pancreas, where damage to the portal vein or the pancreatic duct may occur when a tumor or other abnormality is being resected, dissected or removed.

Folding electrode structures

Improved folding electrode assemblies and associated methods employ a structure comprising a wall peripherally enclosing an interior. The structure is adapted to selectively assume a geometry that changes between an expanded geometry having a first maximum diameter and a collapsed geometry having a second maximum diameter less than the first maximum diameter. At least one folding region in the wall is adapted to fold upon itself along a predefined fold line as the structure geometry changes. The folding region is formed when a portion of the wall is coated with an electrically conductive material for the purpose of transmitting electrical ablating energy, while another portion of the wall is left free of the electrically conductive material. Alternatively, the folding region is formed by forming an array of apertures in the wall.

Catheter with radiofrequency heating applicator

Radiofrequency (RF) heating applicator, located at the distal end of a coaxial line catheter, produces deeper and more uniform heat dissipation. The active applicator element is a conductor helix fed via the coaxial line. The applicator has provisions for interception of intracardiac electrogram signal. A cardiac ablation system using the above catheter, ablates cardiac tissue responsible for ventricular tachycardia. The ablation system provides means to monitor intracardiac electrograms and to control the RF power. A variation of the helical applicator can be used in a hyperthermia system for treatment of malignant tumors.

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 ...

THERMAL SURGICAL TOOL

An electrical conductor, such as a wire or catheter, which is coated circumferentially with a ferromagnetic material in a selected region, is fed from a high frequency alternating current source. The ferromagnetic material has a quick response in heating and cooling to the controllable power delivery. The ferromagnetic material can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures.

Skin-heating shaving apparatus and method

A shaver that includes a cartridge with one or more razor blades and a source of RF energy operative to apply RF energy to one or more of the blades. The cartridge can be attached to a handle for moving the cartridge along the surface of the skin. The cartridge may include a variety of configurations including one or more electrodes and one or more blades with the RF current conducting through any subset of the electrodes and blades, through the skin, thereby heating the skin to help facilitate the engagement of the blade with the hair on the skin surface.

Steerable loop structures for supporting diagnostic and therapeutic elements in contact with body tissue

A probe that includes a elongate body and a steerable loop structure that supports electrodes or other operative elements against the body tissue.

Multi-mode surgical tool

Thermal, electrosurgical and mechanical modalities may be combined in a surgical tool. Potentially damaging effects in a first modality may be minimized by using a secondary modality. In one example, thermal hemostasis may thus help electrosurgical applications avoid the adverse tissue effects associated with hemostatic monopolar electrosurgical waveforms while retaining the benefits of using monopolar incising waveforms.

SUCTION COAGULATOR

An electrosurgical suction coagulator includes a housing having proximal and distal ends and an elongated tube-like shaft extending longitudinally from the distal end of the housing. The elongated tube-like shaft includes a tube-like dielectric sheath, a tube-like conductor, and an external insulator. The tube-like conductor is disposed coaxially through the tube-like dielectric sheath. The distal end of the tube-like conductor protrudes at least partially from the distal end of the tube-like dielectric sheath. The external insulator is disposed coaxially around the tube-like dielectric sheath. The external insulator extends from about the proximal end of the dielectric sheath to about the distal end of the dielectric sheath.

Flexible electrosurgical ablation and aspiration electrode with beveled active surface

Disclosed herein is a flexible single piece active element for use in connection with aspirating electrosurgical ablators, particularly those configured for bulk tissue vaporization. The active electrode elements of the present invention provide a simple construction suitable for use with a wide array of electrosurgical components and adjustable to wide range of angled positions to permit access to a variety of tissues, in an array of diverse environments and address a host of ablation needs. Additionally, the novel geometry and positioning of both ablation surface and aspiration ports permit aspiration flow to remove primarily waste heat rather than process heat, to thereby improve vaporization efficiency and reduce procedure time. Thus, active electrodes and ablation devices of the present invention maximize efficiency and adaptability while minimizing manufacturing cost and device profile.

Inductively heated multi-mode surgical tool

Thermal, Electrosurgical and Mechanical modalities may be combined in a surgical tool. Potentially damaging effects in a first modality may be minimized by using a secondary modality. In one example, thermal hemostasis may thus help electrosurgical applications avoid the adverse tissue effects associated with hemostatic monopolar electrosurgical waveforms while retaining the benefits of using incising waveforms.

Electrosurgical device for cutting and removing tissue

Electrosurgical devices including a shaft, a handle and a distal end portion. The distal end portion is formed of an electrically conductive material and includes an electrically insulating material covering a substantial portion of the distal end portion and leaving an exposed portion which acts as an active electrode for delivery of electrical energy to tissue. A conduit in the shaft extending to an opening in the distal end portion facilitates aspiration of tissue and may provide suction simultaneous with delivery of electrical energy. Systems include an electrosurgical device, a source of electrical energy and may optionally include a source of suction and/or a source of fluid delivery or irrigation.

LARGE VOLUME TISSUE REDUCTION AND REMOVAL SYSTEM AND METHOD

A tissue removal system for extracting a tissue specimen from a patient is disclosed. The system has a retrieval bag, a first electrode, and a return electrode. The retrieval bag has a flexible container with an opening. The first electrode is coupled to an interior of the flexible container, and has a conductive wire with an exposure area, a first load-bearing area, a coating having a first active electrode surface area, and an impedance that is greater than an impedance of the conductive wire. The first active electrode surface area is less than the exposure area. The coating is configured to degrade during application of electrosurgical power and wherein the degradation expands the first active electrode surface area during the application of the electrosurgical power. 1. A tissue removal system for extracting a tissue specimen from a patient , the system comprising:a retrieval bag having a flexible container with an opening;a first electrode coupled to an interior of the flexible container, the first electrode having a conductive wire with an exposure area, a first load-bearing area, a coating having a first active electrode surface area, and an impedance that is greater than an impedance of the conductive wire, wherein the first active electrode surface area is less than the exposure area; anda return electrode; whereinthe coating is configured to degrade during application of electrosurgical power and wherein the degradation expands the first active electrode surface area during the application of the electrosurgical power.2. The tissue removal system of claim 1 , wherein:the coating is configured to degrade when the generator applies a voltage sufficient to allow an arc to initiate across the coating.3. The tissue removal system of claim 2 , wherein:the coating has a first thickness and a second thickness greater than the first thickness; andthe first thickness of the high impedance coating is configured to allow a current to conduct across the first ...

Smoke evacuation electrosurgical instrument

An electrosurgical instrument with smoke evacuation, having an electrode, a suction lumen, and a plurality of slots connected to suction lumen, in which the slots may be longer than they are wide and wider than they are thick. The electrosurgical instrument may have the slots arranged longitudinally about its central axis, and the suction lumen may be wider than the slot widths.

Temperature sensor and three-dimensional electrode

A medical device includes an elongate shaft extending along a shaft longitudinal axis and includes a shaft proximal portion and a shaft distal portion. The medical device can include an electrode disposed on the shaft distal portion. The medical device can include a first conductor lead and a second conductor lead, each of the conductor leads electrically being coupled to the electrode. A thermocouple junction formed via a thermocouple conductor can be electrically coupled to the electrode and the first conductor lead.

THERMAL RESECTING LOOP

A thermal surgical instrument comprising a conductor having a ferromagnetic material in electrical communication with the conductor, such that passage of electrical energy through the conductor causes substantially uniform heating of the ferromagnetic material sufficient to produce a desired therapeutic tissue effect is provided. The conductor may be shaped to facilitate resection of tissue from a patient and include a support to provide increase rigidity to the loop so that the conductor better resists bending during use. The ferromagnetic material quickly heats and cools in response to a controllable power delivery source. The thermal surgical instrument can be used for substantially simultaneously resecting tissue with hemostasis. 1. A thermal resecting instrument comprising: a conductor loop defining a void for receiving tissue and', 'a ferromagnetic layer covering at least a portion of the conductor loop, the ferromagnetic layer forming a ferromagnetic region disposed along the conductor loop, the conductor loop extending from a position prior to the ferromagnetic layer, through the ferromagnetic region and to a position beyond the ferromagnetic layer;, 'a thermal element comprisingwherein passage of electrical energy from a conductor loop location prior to the ferromagnetic region to a conductor loop location beyond the ferromagnetic region causes the ferromagnetic layer to heat.2. The thermal resecting instrument of claim 1 , wherein the ferromagnetic region extends along the conductor loop so as to form a generally semi-circular ferromagnetic region.3. The thermal resecting instrument of claim 1 , wherein the ferromagnetic region extends along substantially the entire length of the conductor loop.4. The thermal resecting instrument of claim 1 , wherein the conductor loop comprises a material having a Young′ Modulus of at least 118 GPa.5. The thermal resecting instrument of claim 1 , wherein the conductor loop comprises a material having a Young's Modulus of ...

LAYERED FERROMAGNETIC COATED CONDUCTOR THERMAL SURGICAL TOOL

A thermal surgical tool comprising a conductor having a ferromagnetic material attached thereto is provided. The conductor may include a support of sufficiently high Young's modulus to resist bending when the surgical tool is being used to treat tissue. One or more intervening layers may be disposed between the support and the ferromagnetic material. Each of the intervening layers may be selected for a property that facilitates construction of the surgical tool and/or enhances a functionality of the surgical tool. The thermal surgical tool can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures. 116.-. (canceled)17. A method for manufacturing a thermal surgical tool comprising:forming an electrical conductor by selecting a support and attaching at least one intervening layer to the support; andattaching a ferromagnetic material to the electric conductor;wherein the at least one intervening layer is disposed between the support and the ferromagnetic coating.18. The method according to claim 17 , further comprising providing the electrical conductor with connection sites for connecting the electrical conductor to a power source independent of the ferromagnetic material.19. The method according to claim 17 , further comprising disposing an exterior layer over the ferromagnetic material and at least a portion of the electrical conductor.20. A method of treating tissue comprising:selecting a thermal surgical tool comprising a conductor having a ferromagnetic material disposed thereon, wherein the conductor is connectable to an electric power source independent of the ferromagnetic material;disposing the ferromagnetic material adjacent to a tissue;treating the tissue by directing oscillating electrical energy through the conductor to cause the ferromagnetic material to inductively heat;wherein the conductor comprises a support having at least one intervening layer, and wherein the at ...

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.

Thin-film coated fluoropolymer catheter

A fluoropolymer medical device (e.g., a sphincterotome) has a thin-film coating deposited using a technique such as Atomic Layer Deposition. The thin-film coating may be a ceramic coating or a metal coating and a ceramic coating may further have an overlying ink coating such as a conducting ink or a radiopaque marker. The ceramic coating improves the application and adherence of the ink coating to the fluoropolymer device.

ELECTROSURGERY PROBES WITH SMOKE AND LIQUID EVACUATION

An electrosurgery system and method of practicing electrosurgery are provided, which incorporate the use of an electrosurgery probe. The electrosurgery probe an electrosurgery probe includes an electrically-conductive element comprised of a surgical tool tip segment, a mid-segment, and an electrical contact segment. The mid-segment includes a hollow, unobstructed tube having a wall and an interior flow passage, an open distal end and a closed proximal end. The mid-segment is coupled directly to the surgical tool tip segment and to the electrical contact segment. An opening is formed in the mid-segment which is in fluid communication with the interior flow passage. The surgical tool tip segment, the mid-segment and the electrical contact segment are all comprised of at least one electrically-conductive material. 1. An electrosurgery system , comprising:an electrosurgery handpiece comprising an elongate body segment and an exhaust segment, the handpiece having a main flow passage extending longitudinally therethrough, the handpiece further having a second passage extending longitudinally through a distal portion of the body segment, the second passage terminating in an electrical contact, the exhaust segment having a cross-sectional diameter greater than a cross-sectional diameter of the main flow passage; and 'an electrically-conductive element comprising a surgical tool tip segment, a mid-segment, and an electrical contact segment, the mid-segment comprising a hollow, unobstructed tube having a wall and an interior flow passage, the mid-segment having an open distal end and a closed proximal end, wherein the mid-segment is coupled at its distal end directly to the surgical tool tip segment and coupled at its closed proximal end directly to the electrical contact segment, the mid-segment further having an opening formed through the wall of the tube adjacent to the proximal end of the mid-segment, the opening in fluid communication with the interior flow passage, and ...

BIPOLAR FORCEPS

A bipolar forceps may include a first forceps arm having a first forceps arm aperture, a first forceps jaw, and a first forceps arm conductor tip; a second forceps arm having a first forceps arm aperture, a second forceps jaw, and a second forceps arm conductor tip; and an input conductor isolation mechanism having a first forceps arm housing and a second forceps arm housing. The first forceps arm may be disposed in the first forceps arm housing and the second forceps arm may be disposed in the second forceps arm housing. An application of a force to a lateral portion of the forceps arms may be configured to close the forceps jaws. A reduction of a force applied to a lateral portion of the forceps arms may be configured to open the forceps jaws. 1. An instrument comprising:a first forceps arm having a first forceps arm distal end and a first forceps arm proximal end;a first forceps jaw of the first forceps arm having a first forceps jaw distal end and a first forceps jaw proximal end wherein the first forceps jaw distal end is the first forceps arm distal end;a first conductor tip of the first forceps arm having a first conductor tip distal end and a first conductor tip proximal end wherein the first conductor tip distal end is the first forceps arm distal end and the first forceps jaw distal end and wherein the first conductor tip proximal end is disposed between the first forceps jaw proximal end and the first forceps arm distal end;a first forceps arm aperture of the first forceps arm wherein the first forceps arm aperture is configured to reduce a mass of the first forceps arm;a second forceps arm having a second forceps arm distal end and a second forceps arm proximal end, the second forceps arm disposed opposite the first forceps arm;a second forceps jaw of the second forceps arm having a second forceps jaw distal end and a second forceps jaw proximal end, the second forceps jaw disposed opposite the first forceps jaw wherein the second forceps jaw distal end ...

Laser surgery apparatus for contact laser surgery

The present invention relates to a laser surgery apparatus for contact laser surgery and to a method of using the laser surgery apparatus. The laser surgery apparatus ( 1 ) comprises a contact laser scalpel ( 3 ) for contact laser surgery, the contact laser scalpel ( 4 ) comprising an optical fiber ( 4 ) of IR laser radiation transmissive material and terminating at an optical fiber tip ( 5 ) having an exposed core region, and support means for holding said fiber and for positioning said scalpel ( 3 ). Said fiber tip ( 5 ) is tapered and disposed at a distal end of the scalpel ( 3 ) for contacting a tissue to be cut and comprises an uncoated contact surface ( 6 ) for transmit ting laser radiation and a guiding surface that is at least partially reflective to laser radiation and provided such that laser radiation guided by said optical fiber ( 4 ) to said fiber tip ( 5 ) will be at least partially reflected by said guiding surface and emitted through said uncoated contact surface. The contact laser surgery apparatus further comprises a pulsed laser source ( 2 ) adapted to provide pulse durations in the femtosecond, picosecond and/or nanosecond range, and light transmitting means ( 9 ) connecting said laser source ( 2 ) to said optical fiber ( 4 ) of said scalpel ( 3 ) for conveying laser radiation from said laser source ( 2 ) to said optical fiber ( 4 ) such that the conveyed laser light is emitted at said uncoated contact surface of the fiber tip.

Medical device

A medical device that includes a support member, a heat insulator provided on at least a portion of a first surface of the support member, an energy output member configured to output energy, the energy output member provided on at least a portion of a first surface of the heat insulator, the output energy configured to treat biological tissue and a heat conductor provided on at least a portion of the first surface of the support member and contacting a second surface of the heat insulator, the second surface of the heat insulator opposite the first surface of the heat insulator, wherein a portion of the support member is located proximal than the energy output, and the energy output member is configured to transfer heat to the heat insulator, and wherein the heat conductor is configured to conduct the heat from the heat insulator to the support member.

Method to remove a tumor using a percutaneous surgical instrument

The present invention relates to a method of removing a tumor by radiofrequency ablation, comprising providing a guiding device ( 6 ) having at least two first concentric through holes ( 8, 81, 82 ) and a plurality of second through holes ( 10, 11 ) at a periphery of the guiding device ( 6 ). The method further comprising placing the guiding device against the skin of a patient and inserting two first electrodes ( 3, 4, 5 ) into the first through holes ( 8, 81, 82 ) of the guiding device and into a patient's skin and then applying a first radiofrequency current between the two first electrodes ( 3, 4, 5 ). The method further comprising inserting a second electrode ( 5 ) through a second through hole ( 10, 11 ) and into the patient's skin and then applying a second radiofrequency current between a first electrode ( 3, 4 ) and the second electrode ( 5 ).

SURGICAL DEVICE HAVING CHANGEABLE ELEMENTS

An electrosurgical device kit includes an elongate first member, an elongate second member disposed adjacent to the first member, the second member being at least movably coupled to the first member, a first electrode head removably attachable to the first member, a second electrode head removably attachable to the first member, and a third electrode head coupled to the second member. The first, second, and third electrode heads are configured to apply a current to a tissue, the first and second electrode heads being non-identical. 1. An electrosurgical device kit comprising:an elongate first member;an elongate second member disposed adjacent to the first member, the second member being at least movably coupled to the first member;a first electrode head removably attachable to the first member;a second electrode head removably attachable to the first member; anda third electrode head coupled to the second member;wherein the first, second, and third electrode heads are configured to apply a current to a tissue, the first and second electrode heads being non-identical.2. The electrosurgical device kit of claim 1 , wherein the first electrode is identical to the third electrode.3. The electrosurgical device kit of claim 1 , wherein the first electrode is sharper than the second electrode.4. The electrosurgical device kit of claim 1 , wherein the first electrode has a first coating disposed thereon and the second electrode has one of: no coating and a second coating disposed thereon claim 1 , the first and second coatings being non-identical.5. The electrosurgical device kit of claim 1 , wherein the first electrode has a first electrode thermal capability and the second electrode has a second electrode thermal capability claim 1 , the first electrode thermal capability being different than the second electrode thermal capability.6. The electrosurgical device kit of claim 1 , wherein the first electrode has a first electrode electrical capability and the second electrode ...

Bipolar forceps

A bipolar forceps may include a first forceps arm having a first forceps arm aperture, a first forceps jaw, and a first forceps arm conductor tip; a second forceps arm having a first forceps arm aperture, a second forceps jaw, and a second forceps arm conductor tip; and an input conductor isolation mechanism having a first forceps arm housing and a second forceps arm housing. The first forceps arm may be disposed in the first forceps arm housing and the second forceps arm may be disposed in the second forceps arm housing. An application of a force to a lateral portion of the forceps arms may be configured to close the forceps jaws. A reduction of a force applied to a lateral portion of the forceps arms may be configured to open the forceps jaws.

Medical Device Having Laminate-Coated Braid Assembly

A catheter includes a braid assembly having a dual-laminate coating. The braid assembly includes a plurality of braid members interwoven to provide for interstices between the braid members, each braid member having an electrically conductive element, a flexible non-electrically-conductive polymer coating that insulates the electrically conductive element and a thermoplastic bonding adhesive coating. The braid assembly is formed between an inner polymer layer and an outer polymer layer. One or more of the braid members may be coupled to an energy delivery element. 1. A catheter comprising:an elongate catheter body having an outer surface, a proximal end, a distal end, and an inner lumen extending between the proximal and distal ends;an energy element disposed along the distal end of the elongate catheter body; anda braid assembly extending from the proximal end to the distal end, wherein the braid assembly is formed between an inner polymer layer and an outer polymer layer, the braid assembly comprising a plurality of braid members interwoven to provide for interstices between the braid members, wherein the density of the braid at the proximal end is different from the density of the braid at the distal end, and wherein at least one of the plurality of braid members comprisesan electrically conductive element comprising a flexible dual-laminate coating comprising an inner layer and an outer layer, wherein the outer layer of the dual-laminate coating has a durometer of Shore D of about 40-50, andwherein the electrically conductive element is electrically coupled to the energy element.2. (canceled)3. The catheter according to claim 1 , wherein the electrically conductive element comprises a copper alloy or plated copper.4. The catheter according to claim 3 , wherein the electrically conductive element comprises at least one of steel claim 3 , stainless steel claim 3 , beryllium claim 3 , nickel claim 3 , cobalt claim 3 , zinc claim 3 , aluminum claim 3 , tantalum ...

Medical microelectrode, method for its manufacture, and use thereof

A proto microelectrode from which a micro electrode is formed in situ upon insertion into soft tissue comprises a flexible oblong electrode body of electrically conducting material having a front end and a rear end. The electrode body having a metal or a metal alloy or an electrically conducting form of carbon or an electrically conducting polymer or a combination thereof. A first coat of a water soluble and/or swellable and/or degradable material is disposed on the electrode body and extends along is at least over a distal portion thereof. A second coat of electrically insulating, water insoluble flexible polymer material is disposed on the first coat. The second coat comprises one or more through openings at or near its front end. Also disclosed is a corresponding micro electrode and a method of manufacture.

THERMAL CUTTING ELEMENTS, ELECTROSURGICAL INSTRUMENTS INCLUDING THERMAL CUTTING ELEMENTS, AND METHODS OF MANUFACTURING

A thermal cutting element for a surgical instrument includes a substrate, a Plasma Electrolytic Oxidation (PEO) coating disposed on the substrate, and a heating element disposed on the PEO coating and including first and second end portions adapted to connect to different potentials of electrical energy to heat the heating element. A jaw member of a surgical instrument includes a structural frame including a proximal flange portion and a distal body portion, a jaw housing surrounding the distal body portion of the structural frame, a tissue-treating plate disposed atop the jaw housing and defining a longitudinal slot therethrough along at least a portion of a length thereof, and the thermal cutting element disposed within the longitudinal slot. 1. A thermal cutting element for a surgical instrument , comprising:a substrate;a Plasma Electrolytic Oxidation (PEO) coating disposed on the substrate; anda heating element disposed on the PEO coating and including first and second end portions adapted to connect to different potentials of electrical energy to heat the heating element.2. The thermal cutting element according to claim 1 , wherein the heating element defines a continuous circuit trace between the first and second end portions.3. The thermal cutting element according to claim 2 , wherein the first and second end portions of the heating element are disposed adjacent one another.4. The thermal cutting element according to claim 1 , further comprising first and second electrical contacts disposed on the respective first and second end portions of the heating element claim 1 , the first and second electrical contacts configured to facilitate connection of the different potentials of electrical energy to the first and second end portions.5. The thermal cutting element according to claim 1 , wherein the substrate is formed from aluminum claim 1 , titanium claim 1 , an aluminum alloy claim 1 , or a titanium alloy.6. The thermal cutting element according to claim 1 , ...

Thermally adjustable surgical system and method

A power source delivers oscillating electrical energy to an electrical conductor, such as a wire or catheter, which is coated circumferentially with a ferromagnetic material in a selected region. With high frequency electrical energy, the ferromagnetic material has a quick response in heating and cooling adjustable by the controllable power delivery. The ferromagnetic material can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures.

THERMAL CUTTING ELEMENTS, ELECTROSURGICAL INSTRUMENTS INCLUDING THERMAL CUTTING ELEMENTS, AND METHODS OF MANUFACTURING

A method of manufacturing a thermal cutting element for a surgical instrument includes manufacturing a substrate, coating at least a portion of the substrate via Plasma Electrolytic Oxidation (PEO), and disposing a heating element on at least a portion of the PEO-coated substrate. The method may further include attaching the thermal cutting element to a jaw member of a surgical instrument. 1. A method of manufacturing a thermal cutting element for a surgical instrument , the method comprising:manufacturing a substrate;coating at least a portion of the substrate via Plasma Electrolytic Oxidation (PEO);disposing a heating element on at least a portion of the PEO-coated substrate.2. The method according to claim 1 , wherein disposing the heating element includes forming a continuous circuit trace on the PEO-coated substrate claim 1 , the continuous circuit trace extending between first and second end portions of the heating element.3. The method according to claim 2 , wherein forming the continuous circuit trace on the PEO-coated substrate includes forming a circuit trace pattern wherein first and second end portions of the circuit trace pattern are disposed adjacent one another.4. The method according to claim 1 , wherein disposing the heating element includes sputtering the heating element onto the PEO-coated substrate.5. The method according to claim 1 , wherein disposing the heating element includes screen printing the heating element onto the PEO-coated substrate.6. The method according to claim 1 , further comprising:disposing first and second electrical contacts on respective first and second end portions of the heating element.7. The method according to claim 6 , wherein disposing the first and second electrical contacts includes sputtering the first and second electrical contacts onto the respective first and second end portions of the heating element.8. The method according to claim 6 , wherein disposing the first and second electrical contacts includes ...

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

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

CRYOPROTECTANT FOR USE WITH A TREATMENT DEVICE FOR IMPROVED COOLING OF SUBCUTANEOUS LIPID-RICH CELLS

A cryoprotectant for use with a treatment device for improved removal of heat from subcutaneous lipid-rich cells of a subject having skin is provided. The cryoprotectant is a non-freezing liquid, gel, or paste for allowing pre-cooling of the treatment device below 0° C. while preventing the formation of ice thereon. The cryoprotectant may also prevent freezing of the treatment device to the skin or ice from forming from moisture seeping out from the skin. The cryoprotectant may further be hygroscopic, thermally conductive, and biocompatible. 1. A system for selectively destroying subcutaneous lipid rich cells of a subject with skin , comprising:a thermoelectric treatment device having a heat exchanging element having a first side in thermal communication with a heat exchanging surface and a second side opposite the first side, the heat exchanging element being configured to reduce a temperature of the target region such that lipid rich cells in the region are affected while preserving non-lipid rich cells proximate to the heat exchanging surface; anda coupling device being releasably coupled to the treatment device and proximate to the heat exchanging surface.2. The system of wherein the coupling device includes a backside portion proximate to the heat exchanging surface claim 1 , a front side portion spaced apart from the backside portion claim 1 , and an intermediate portion between the backside portion and the front side portion for holding the cryoprotectant.3. The system of wherein the front side portion includes at least one aperture in fluid communication with the intermediate portion.4. The system of wherein the intermediate portion is constructed from a mesh claim 2 , foam claim 2 , a porous plastic material and/or a porous metal material.5. The system of further comprising a supply device in fluid communication with the intermediate portion via a conduit and a pressure sensor operatively coupled to one of the intermediate portion claim 2 , the supply ...

Combined brachytherapy and electrochemotherapy catheters

A medical device for multiple treatment therapies includes a hollow tube ( 102 ) having a first end portion with an electrode ( 104 ) disposed at the first end portion and an insulator ( 108 ) configured over a length of the tube such that conductive materials of the tube, except for the electrode, are electrically isolated from an exterior surface the tube. A conductive connection ( 127 ) is configured to electrically couple to the electrode to provide a voltage thereto. A selectively closeable valve ( 106 ) is configured to dispense a medical fluid from the tube.

ELECTROSURGICAL INSTRUMENT WITH ELECTRODES BIASING SUPPORT

A surgical end effector for use with an electrosurgical instrument is disclosed. The end effector comprises a first jaw including a first electrode and a second jaw including a second electrode. The end effector is transitionable from an open configuration to a closed configuration to grasp tissue. The second electrode is laterally offset from the first electrode. The first electrode and the second electrode are configured to cooperate to deliver a bipolar energy to the tissue. The second jaw further comprises a monopolar electrode configured to deliver a monopolar energy to the tissue and a compliant substrate. The monopolar electrode and the second electrode are fixedly attached onto the compliant substrate in a spaced apart arrangement. The compliant substrate is configured to apply a biasing force to the second electrode and the monopolar electrode toward the first jaw in the closed configuration. 1. A surgical end effector for use with an electrosurgical instrument , the end effector comprising:a proximal end;a distal end, wherein a central plane of the surgical end effector extends through the proximal end and the distal end;a first jaw longitudinally bisected by the central plane, wherein the first jaw comprises a first electrode extending along a portion of the first jaw, and wherein the first electrode is positioned on a first side of the central plane; and a second electrode extending along a portion of the second jaw, wherein the second electrode is positioned on a second side of the central plane, and wherein the first electrode and the second electrode are configured to cooperate to deliver a bipolar energy to the tissue; and', a first compliant portion on the first side of the central plane;', 'a second compliant portion on the second side of the central plane, wherein the second electrode is mounted onto the second compliant portion; and', 'a monopolar electrode extending along the central plane, wherein the monopolar electrode is mounted onto the ...

ELECTROSURGICAL INSTRUMENTS WITH ELECTRODES HAVING ENERGY FOCUSING FEATURES

An electrosurgical instrument comprising an end effector including a first jaw and a second jaw. The end effector is transitionable from an open configuration to a closed configuration to grasp tissue. The second jaw comprises a gradually narrowing body extending from a proximal end to a distal end. The gradually narrowing body comprises a conductive material, a first conductive portion extending from the proximal end to the distal end, and a second conductive portion defining a tapered electrode protruding from the first conductive portion and extending distally along at least a portion of the gradually narrowing body. The second jaw further comprises an electrically insulative layer configured to electrically insulate the first conductive portion from the tissue but not the second conductive portion. The first conductive portion is configured to transmit an electrical energy to the tissue only through the second conductive portion. 1. An electrosurgical instrument , comprising: a first jaw; and', [ a first conductive portion extending from the proximal end to the distal end; and', 'a second conductive portion defining a tapered electrode protruding from the first conductive portion and extending distally along at least a portion of the gradually narrowing body, wherein the second conductive portion is integral with the first conductive portion, and wherein the first conductive portion is thicker than the second conductive portion in a transverse cross-section of the gradually narrowing body; and, 'a gradually narrowing body extending from a proximal end to a distal end, wherein the gradually narrowing body comprises a conductive material, and wherein the gradually narrowing body comprises, 'an electrically insulative layer configured to electrically insulate the first conductive portion from the tissue but not the second conductive portion, wherein the first conductive portion is configured to transmit an electrical energy to the tissue only through the second ...

Electrosurgical instrument with electrodes operable in bipolar and monopolar modes

An electrosurgical instrument comprising an end effector is disclosed. The end effector comprises a first jaw and a second jaw. The first jaw comprises a first electrode. The end effector is movable from an open configuration to a closed configuration to grasp tissue. The second jaw comprises a second electrode configured to deliver a first monopolar energy to the tissue, a third electrode, and a conductive circuit selectively transitionable between a connected configuration with the third electrode and a disconnected configuration with the third electrode. In the connected configuration, the third electrode is configured to cooperate with the first electrode to deliver bipolar energy to the tissue. The conductive circuit defines a return path for the bipolar energy. In the disconnected configuration, the first electrode is configured to deliver a second monopolar energy to the tissue.

End-effector assembly including a pressure-sensitive layer disposed on an electrode

An end-effector assembly includes first and second jaw members disposed in opposing relation relative to one another, at least one of the jaw members moveable from an open position to a closed position for grasping tissue therebetween. First and second conductive plates are disposed on opposing surfaces of corresponding first and second jaw members. First and second compressible membranes are configured to electrically connect corresponding first and second conductive plates to a surgical field when subjected to a compression bias.

METHOD AND DEVICES FOR PERFORMING MINIMALLY INVASIVE SURGERY

A device for use in performing minimally invasive surgery. A system for performing minimally invasive surgery comprising the device according to the present invention. A method for performing minimally invasive surgery. 1providing a first device comprising a first part and a second part;making a first opening and a second opening into the body wall;introducing the second part of the first device into the body cavity through the second opening; andcoupling the first part of the first device to the second part of the first device to assemble the first device.. A method of performing surgery in a body cavity of a body, the body cavity being separated from a space outside the body by a body wall, the method comprising: The present application is a continuation of U.S. patent application Ser. No. 15/150,051 titled: “Method and Devices for Performing Minimally Invasive Surgery,” filed May 9, 2016, which is a continuation of U.S. patent application Ser. No. 13/528,714 (now U.S. Pat. No. 9,333,029) titled: “Method and Devices for Performing Minimally Invasive Surgery,” filed Jun. 20, 2012, which is a divisional of U.S. patent application Ser. No. 12/937,705 (now U.S. Pat. No. 8,225,798) titled: “Method and Devices for Performing Minimally Invasive Surgery,” filed Oct. 13, 2010, which is a national phase of International Patent Application No. PCT/US2010/035312 titled “Method and Devices for Performing Minimally Invasive Surgery,” filed May 18, 2010, which claims the benefit of U.S. Provisional Patent Application No. 61/179,301, titled “Method and Devices for Performing Minimally Invasive Surgery,” filed May 18, 2009, U.S. Provisional Patent Application No. 61/230,944, titled “Method and Devices for Performing Minimally Invasive Surgery,” filed Aug. 3, 2009 and U.S. Provisional Patent Application No. 61/240,406, titled “Method and Devices for Performing Minimally Invasive Surgery,” filed Sep. 8, 2009, the contents of which are incorporated in this disclosure by reference in ...

Tissue dissection device and related methods of use

Embodiments of the present disclosure include a method for treating tissue. The method may include delivering a medical device through a channel of an endoscopic device, wherein the medical device may include an elongate member, a cap coupled to a distal end of the elongate member and having a cavity, and an electrically-conductive tool extending into the cavity of the cap. The method may also include extending a portion of the medical device out of the channel of the endoscopic device and to the tissue, drawing a portion of the tissue into the cavity of the cap, electrically activating the tool to pierce the portion of the tissue, and cutting the tissue by moving the medical device along a plane of the tissue.

ELECTROSURGICAL RESECTION INSTRUMENT

An electrosurgical resection instrument for applying to biological tissue radiofrequency electromagnetic energy has a protective hull comprising a shaped piece of dielectric material mounted to cover an underside of an instrument tip of the instrument. The protective hull acts as a shield to protect tissue that may lie under the instrument tip from damage during treatment. The instrument may be particularly useful in procedures performed in a gastrointestinal tract, where bowel perforation is a concern, or in the pancreas, where damage to the portal vein or the pancreatic duct may occur when a tumour or other abnormality is being resected, dissected or removed. 1. An electrosurgical resection instrument for applying to biological tissue radiofrequency (RF) electromagnetic (EM) energy , the instrument comprising:an instrument tip comprising a planar body made of a first dielectric material separating a first conductive element on a first surface thereof from a second conductive element on a second surface thereof, the second surface facing in the opposite direction to the first surface;a coaxial feed cable comprising an inner conductor, an outer conductor coaxial with the inner conductor and a second dielectric material separating the inner and outer conductors, the coaxial feed cable being for conveying an RF signal; anda protective hull comprising a third piece of dielectric material mounted to form the underside of the instrument tip,wherein the inner conductor is electrically connected to the first conductive element and the outer conductor is electrically connected to the second conductive element to enable the instrument tip to receive the RF signal, andcharacterised in that:the first and second conductive elements extend up to a distal side edge of the planar body to from an RF cutting portion in which they act as active and return electrodes to emit RF EM radiation corresponding to the RF signal from the distal side edge of the planar body, andthe protective ...

Colored vitreous enamel composition for electrosurgical tool

A colored (viz., not black) vitreous enamel coating for an electrosurgical metal cutting blade provides heat-resistant, durable blade coloration and facilitates differentiation or discrimination between, or identification of, different blades. Different colors may be employed on different blade shapes in an array of blades, on blades used for different surgical procedures, or on blades used on different tissue types. The color may be applied to a portion of a blade to denote an edge or other feature. The color may preferentially absorb the primarily blue-trued light emitted by an electrosurgery plasma and preferentially reflect light of other hues; make the blade more visible against surrounding tissues; or discourage reflection of visible or other light (e.g., infrared radiation) in colors that might interfere with markers, sensors or other instruments designed to measure light emitted by or passing through nearby tissue such as by transillumination.

Energy delivery devices and related systems and methods thereof

The present invention relates to comprehensive systems, devices and methods for delivering energy to tissue for a wide variety of applications, including medical procedures (e.g., tissue ablation, resection, cautery, vascular thrombosis, treatment of cardiac arrhythmias and dysrhythmias, electrosurgery, tissue harvest, etc.). In certain embodiments, systems, devices, and methods are provided for treating a tissue region (e.g., a tumor) through application of energy using energy delivery devices having a conductive permanent tip encapsulated in a biocompatible material.

RADIOFREQUENCY ABLATION ELECTRODE NEEDLE

A radiofrequency ablation electrode needle includes at least one first segment and at least two second segments. The at least one first segment and the at least two second segments are exposed on a surface of the needle body. An impedance of the at least one first segment is smaller than an impedance of the at least two second segments and at least one of the at least one first segment is disposed between two immediately adjacent ones of the at least two second segments. Besides, the radiofrequency ablation electrode needle is a monopolar electrode needle. 1. A radiofrequency ablation electrode needle , comprising:a needle body comprising at least one first segment and at least two second segments, wherein the at least one first segment and the at least two second segments are exposed on a surface of the needle body, wherein an impedance of the at least one first segment is smaller than an impedance of the at least two second segments, at least one of the at least one first segment is disposed between two immediately adjacent ones of the at least two second segments, and the radiofrequency ablation electrode needle is a monopolar electrode needle.2. The radiofrequency ablation electrode needle as claimed in claim 1 , wherein a difference between the impedance of the at least one first segment and the impedance of the at least two second segments is at least 10Ω.3. The radiofrequency ablation electrode needle as claimed in claim 1 , further comprising an insulating cover disposed outside the needle body claim 1 , wherein the insulating cover is extendable and retractable to selectively expose some of the at least one first segment and the at least two second segments.4. The radiofrequency ablation electrode needle as claimed in claim 1 , wherein a pinpoint of the needle body is electrically insulated.5. The radiofrequency ablation electrode needle as claimed in claim 1 , wherein the at least one first segment includes a plurality of first segments claim 1 , and the ...

Electrosurgical instruments and systems including thermal cutting elements

An electrosurgical instrument includes an end effector assembly including first and second jaw members at least one of which is movable relative to the other from a spaced-apart position to an approximated position to grasp tissue between first and second opposed surfaces of the first and second jaw members, respectively. The first jaw member includes a thermal cutting wire including a first portion extending distally along at least a portion of a length of the first opposed surface and a second portion extending about a distal tip of the first jaw member. The first and second portions of the thermal cutting wire each include a ferromagnetic coating such that the first and second portions are ferromagnetically heated and provide automatic Curie temperature control upon supply of an AC signal thereto.

Surgical instrument comprising an electrode

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

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 (EM) 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. 130.-. (canceled)31. An electrosurgical resector tool comprising:a shaft defining a lumen;an energy conveying structure for carrying radiofrequency (RF) electromagnetic (EM) energy and microwave EM energy through the lumen of the shaft, wherein the energy conveying structure comprises a coaxial transmission line extending in a longitudinal direction through the lumen, and wherein the coaxial transmission line comprises an inner conductor separated from an outer conductor by a dielectric material; a static portion comprising a first blade element, wherein the first blade element comprises a longitudinally extending planar dielectric body having a first electrode on a first laterally facing surface thereof; and', 'a movable portion comprising a second blade element, wherein the movable portion is pivotable relative to the static portion within a rotation plane between a closed position in which the first blade element and second blade element lie alongside each other in a lateral direction that is normal to the rotation plane to an open position in which the second blade element is spaced from the first blade element by a gap for receiving biological tissue;', 'a second electrode located on a second laterally facing surface of the ...

Organ resection tool

An organ resection tool has a first conductor configured to apply microwaves, a second conductor configured to receive the microwaves, an insulator with which at least one of the first conductor and the second conductor is partially or entirely covered, and a brush structure connected directly or indirectly to the insulator or to at least one of the first conductor and the second conductor.

Monopolar electrosurgery blade and electrosurgery blade assembly

Electrosurgery blades including electrosurgery blade assemblies having argon beam capability. The electrosurgery blade includes a thin conductive member having a lead sharp cutting end and an opposite noon-cutting end and a non-conductive coating covering the thin conductive member such that at least a portion of the lead cutting end and at least a portion of the opposite non-cutting end of the thin conductive member remain exposed. An electrosurgery blade assembly having argon beam capability includes the previously described electrosurgery blade, a non-conductive tube member having a hollow tubular shaped opening positioned on top of the electrosurgery blade, and a conductive hollow tubular member contained within at least a portion of the non-conductive tube member.

Arthroscopic devices and methods

An arthroscopic cutting probe includes a shaft assembly having a distal end, a proximal end, and a longitudinal axis. A distal cutting member is rotatably attached at the distal end of the shaft assembly, and at least a portion of an exterior surface of the distal cutting member is electrically insulated. One or more burr elements extend radially outwardly from the electrically insulated portion of the exterior surface of the distal cutting member, wherein the burr element is electrically conductive to form an active electrode.

Electrosurgical instrument for radiating microwave energy and dispensing liquid at a treatment site

An electrosurgical device capable of both: (i) generating a radiative microwave field to perform either blood coagulation or sterilization, and (ii) dispensing a liquid to a target area, e.g. adrenaline for the treatment of peptic ulcers. Using microwave energy allows controlled coagulation which is unaffected by changes in tissue impedance during coagulation, and which can achieve a high level of coagulation within a given time. The device comprises a probe tip having a coaxial transmission line that includes a hollow inner conductor having a dielectric material formed on an inner surface thereof. A liquid-conveying channel is located inside the dielectric material. The probe tip includes a conductive element coupled to receive microwave energy from the, coaxial transmission line, the conductive element forming a radiating antenna structure for emitting a microwave EM field outwardly from the probe tip.

Irrigating bipolar forceps

An irrigating bipolar forceps may include a first forceps arm, a conductor tip of the first forceps arm, a second forceps arm, a conductor tip of the second forceps arm, an input conductor isolation mechanism, and irrigation tubing. A proximal end of the first forceps arm may be disposed within the input conductor isolation mechanism and a proximal end of the second forceps arm may be disposed within the input conductor isolation mechanism. An application of a force to a lateral portion of the forceps arms may be configured to close the forceps arms. A reduction of a force applied to a lateral portion of the forceps arms may be configured to open the forceps arms. The irrigation tubing may transport a fluid from an irrigation supply system to a surgical site.

Treatment instrument and treatment system

A treatment instrument which is used under an environment filled with an electrically conductive liquid includes a probe, a hollow sheath and an insulating member. The probe has a distal portion to chip a treatment target part by ultrasonic vibration and which allows the distal portion to function as one pole in a bipolar electrode. The sheath surrounds the probe. The insulating member covers the sheath except for a partial region on the distal side of the sheath. The partial region on the distal side of the sheath functions as the other pole in the bipolar electrode.

SURGICAL INSTRUMENT COMPRISING AN ELECTRODE

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

SHIELDING FEATURES FOR ULTRASONIC BLADE OF A SURGICAL INSTRUMENT

An apparatus comprises a body, a shaft assembly, an end effector, and a shield member. The shaft assembly extends distally from the body. The end effector is located at a distal end of the shaft assembly. The end effector comprises an ultrasonic blade and a clamp arm. The ultrasonic blade is configured to vibrate at an ultrasonic frequency. The clamp arm is movable toward the ultrasonic blade to compress tissue against the ultrasonic blade. The shield member is selectively movable from a first position to a second position in response to movement of the clamp arm toward the ultrasonic blade. The shield member is configured cover at least a first portion of the ultrasonic blade in the first position. The shield member is configured to uncover the first portion of the ultrasonic blade in the second position. 120-. (canceled)21. An apparatus comprising:(a) a shaft assembly extending along a longitudinal axis; (i) an ultrasonic blade operable to treat tissue with ultrasonic energy, and', '(ii) a clamp arm operable to clamp tissue against the ultrasonic blade; and, '(b) an end effector located at a distal end of the shaft assembly, wherein the end effector comprises(c) a shield member positioned to cover at least a portion of the ultrasonic blade,wherein the shield member and the ultrasonic blade extend distally together along a curved path that deflects laterally away from the longitudinal axis.22. The apparatus of claim 21 , wherein the ultrasonic blade includes a first blade side that faces the clamp arm and a second blade side opposed from the first blade side claim 21 , wherein the shield member is positioned to cover at least a portion of the second blade side.23. The apparatus of claim 22 , wherein the shield member is positioned to define a gap between the second blade side and an inner side of the shield member claim 22 , wherein the gap is sized to receive fluid for cooling the ultrasonic blade.24. The apparatus of claim 22 , wherein the shield member extends ...

Surgical Instrument Comprising Electrode Support

A branch of an instrument comprising a metal part, which is embodied in one piece seamlessly, which comprises the electrode support as well as the electrode plate and connection webs. Preferably, this metal part is produced in an additive production method, for example selective laser melting (SLM). The branches are suitable for instruments for open surgery as well as for laparoscopic and flexible endoscopic instruments. 115-. (canceled)16. An electrosurgical instrument comprising a branch having a metal part , the metal part comprising:a hinge bore having a plastic jacket that extends through the hinge bore to form a bearing sleeve.17. The electrosurgical instrument of claim 16 , wherein the plastic jacket is configured to center within the hinge bore a bolt inserted into the hinge bore by compensating for production tolerances in the metal part.18. The electrosurgical instrument of claim 17 , wherein the plastic jacket insulates the metal part against the bolt. Embodiments of the invention relate to a surgical instrument for the electrosurgical monopolar or bipolar application of current to biological tissue, in particular a sealing instrument.Instruments for the coagulation of biological tissue between two branches of a tool comprising at least one movable branch are known from the state of the art. For this purpose, EP 2 554 132 shows an instrument, the branches of which in each case comprise an electrode support and a thin plate-shaped electrode. The electrode support can consist of a massive metal part or of a plastic-coated metal part. The electrode is connected to the electrode support via a plurality of point-like welded connections. On the one hand, a reliable mechanical connection and, on the other hand, only a small heat transfer between the electrode and the electrode support is to be attained with this. Even though the seams have only a small diameter, they also have only a small length (expansion in heat flow direction), which limits their effect as ...

Electrosurgical instrument extension attachment

Extension attachments selectively couple to any of a variety of hand held instruments. The extension attachments may include smoke evacuation shafts and electrosurgical electrodes. The extension attachments may extend the functional capabilities of the hand held instruments, such as electrosurgical and smoke capture capabilities.

ELECTROSURGICAL DISSECTOR WITH THERMAL MANAGEMENT

An electrosurgical dissection apparatus is disclosed, and includes a thermally insulating body, a thermally conductive insert, at least one active electrode, and at least one return electrode. The at least one active electrode is disposed on the thermally conductive insert, and the at least one return electrode is spaced from the at least one active electrode by a portion of the thermally insulating body. The thermally conductive insert is configured to cauterize tissue dissected by radiofrequency energy passing from the at least one active electrode to the at least one return electrode. 16-. (canceled)7. An electrosurgical dissection apparatus comprising:a thermally insulating body;a thermally conductive insert;at least one active electrode disposed on the thermally conductive insert;at least one return electrode, the at least one return electrode spaced from the at least one active electrode by a portion of the thermally insulating body;at least a pair of approximatable jaw members, each jaw member including a sealing plate;wherein the thermally conductive insert is configured to cauterize tissue dissected by radiofrequency energy passing from the at least one active electrode to the at least one return electrode.8. The electrosurgical dissection apparatus of claim 7 , wherein each of the at least one active electrode and the at least one return electrode are disposed on the respective opposing sealing plates.916-. (canceled) The present application claims the benefit of and priority to U.S. Provisional Application Ser. No. 61/658,523, filed on Jun. 12, 2012, the entire contents of which are incorporated herein by reference.The present disclosure relates to an electrosurgical dissection system and method for performing electrosurgical dissection procedures. More particularly, the present disclosure relates to a system and method for transmitting radio frequency energy from an electrosurgical generator to a treatment site through a dissector formed of materials ...

DEVICES AND METHODS FOR FORMING A FISTULA

Described here are devices, systems and methods for forming a fistula between two blood vessels. Generally, the systems may comprise a first catheter which may comprise a fistula-forming element. The fistula-forming element may comprise one or more electrodes, mechanical cutting elements, laser sources, or combinations thereof, and may be used to assist in fistula formation. In some instances, a system may comprise a second catheter, which may comprise a fistula-forming element. One or more of the catheters may comprise one or more markers, magnetic alignment elements, and/or one shape-changing elements. 1. A system for forming a fistula between two blood vessels comprising:a first catheter, comprising a catheter body, a lead wire and at least one alignment element, wherein the lead wire is moveable between a low-profile configuration and an extended position wherein at least a portion of the lead wire extends away from catheter body.2. The system of further comprising a second catheter.3. The system of wherein the second catheter comprises a recessed region.4. The system of wherein the recessed region is a pocket configured to receive at least a portion of lead wire when lead wire extends away from the catheter body of the first catheter.5. The system of wherein the second catheter comprises at least one alignment element claim 4 , and wherein the at least one alignment element of the first catheter and the at least one alignment element of the second catheter are configured to align the first catheter and the second catheter such that lead wire at least partially enters pocket when lead wire extends away from the catheter body of the first catheter.6. The system of wherein the pocket is formed in a nesting material housed at least partially within the catheter body of the second catheter.7. The system of wherein the pocket is formed in an electrode housed at least partially within the catheter body of the second catheter.8. The system of wherein the pocket is at ...

Percutaneous and laparoscopic surgical instrument

The present invention relates to a Radiofrequency surgical instrument comprising at least two dry electrodes ( 3 and 4, or 3 and 5 ) and a electrode guiding device ( 6 ) comprising a main body ( 7 ), having a proximal end ( 73 ) and a distal end ( 74 ), and at least two insertion holes ( 8 and 81 or 82 ) guiding said electrodes ( 3 and 4, or 3 and 5 ), said insertion holes ( 8 and 81 or 82 ) extending through the body ( 7 ).

PULMONARY VEIN ISOLATION BALLOON CATHETER

The instant disclosure relates to electrophysiology catheters for tissue ablation within a cardiac muscle, for example. In particular, the instant disclosure relates to an electrophysiology ablation balloon catheter with a combination of coated and uncoated surfaces for focusing ablation energy at a desired portion of tissue. 1. An ablation balloon catheter apparatus comprising:a catheter shaft including proximal and distal portions; an uncoated region configured and arranged to facilitate energy transfer between the ablation balloon and tissue in contact with the uncoated region, and', 'a coated region configured and arranged to mitigate energy transfer between the ablation balloon and tissue in contact with the coated region; and, 'an ablation balloon including proximal and distal ends, the proximal end of the ablation balloon coupled to a distal portion of the catheter shaft, the ablation balloon including'}a radio frequency coil within the ablation balloon and configured and arranged to transmit radio frequency waves through the uncoated region of the ablation balloon to ablate tissue in contact with the uncoated region.2. The apparatus of claim 1 , wherein the uncoated region of the ablation balloon is configured and arranged toengage a pulmonary vein, andablate tissue along a circumferential region around the pulmonary vein in contact with the uncoated region of the ablation balloon.3. The apparatus of claim 1 , further including a second coated region situated at a proximal end of the ablation balloon claim 1 , the uncoated region of the ablation balloon is situated between the coated region and the second coated region claim 1 , and wherein the uncoated region is configured and arranged to deliver a tissue ablation therapy along a circumference of a pulmonary vein ostia in contact with the uncoated region.4. The apparatus of claim 1 , wherein the uncoated region is situated at a distal end of the ablation balloon claim 1 , and the coated region is situated ...

Irrigating bipolar forceps

An irrigating bipolar forceps may include a first forceps arm, a conductor tip of the first forceps arm, a second forceps arm, a conductor tip of the second forceps arm, an input conductor isolation mechanism, and irrigation tubing. A proximal end of the first forceps arm may be disposed within the input conductor isolation mechanism and a proximal end of the second forceps arm may be disposed within the input conductor isolation mechanism. An application of a force to a lateral portion of the forceps arms may be configured to close the forceps arms. A reduction of a force applied to a lateral portion of the forceps arms may be configured to open the forceps arms. The irrigation tubing may transport a fluid from an irrigation supply system to a surgical site.

Medical device and coating material

A coating material and a medical device. The medical device having an end effector and a coating to cover the end effector. The coating having one or more of: a plurality of hollow particles; and projections and depressions.

Irrigant distribution system for electrodes

An ablation electrode assembly is provided with improved irrigation cooling of the assembly and ablation site. The assembly includes a proximal end configured to be coupled to a catheter shaft and a distal end configured to deliver ablation energy to tissue. The assembly further includes a fluid manifold extending from the proximal end to the distal end and configured to fluidly communicate with a fluid lumen in the catheter shaft. The fluid manifold defines an axial passageway centered about a longitudinal axis extending in the longitudinal direction of the assembly. The axial passageway has a distal end terminating prior to the distal end of the electrode assembly. The assembly further includes means for creating turbulence in fluid exiting the first axial passageway.

Electrosurgical Instrument and Method for Manufacturing Thereof

An electrosurgical instrument with first and second branches that are pivotably supported by a support pin is disclosed. The first branch has a first tissue contact surface and the second branch has a second tissue contact surface. The two tissue contact surfaces are electrically connected with an electric connection device at the first branch. The electric connection is at least partly established via a respective conductor. The second conductor is integrally formed by one single body. The second conductor has a contact section with at least one contact part in contact with an electrically conductive circumferential surface of the support pin, such that an electric rotation connection is established between the contact section and the support pin. In this manner the second conductor arranged in the first branch can establish an electric connection with the second branch via the support pin and further with the second tissue contact surface.

Rf fractional device for treatment at different tissue depths

A method of applying RF energy includes using an RF energy applicator assembly to apply RF energy to a tissue. The RF energy applicator assembly includes a housing, and RF electrodes coupled to an RF energy source and movably mounted in the housing. The RF electrodes have a retracted position, in which the RF electrodes are retracted inside the housing, and deployed positions in which the RF electrodes protrude out of the housing at different protrusion lengths. An actuator is coupled to the RF electrodes and configured to move the RF electrodes from the retracted position to any one of the deployed positions.

Surgical instrument comprising an electrode

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

Surgical instrument comprising an electrode

A surgical instrument configured to deliver electrical energy to the tissue of a patient is disclosed. The surgical instrument comprises a frame, a first electrode, a second electrode, and a guard movable between a first position and a second position. The surgical instrument further comprises a spring positioned intermediate the guard and the frame. The spring is configured to bias the guard into the first position. When the guard is in the first position, a distal end of the guard is positioned at least flush with distal ends of the first electrode and the second electrode, which prevents current from arcing between the first electrode and the second electrode. When the guard is in the second position, the distal end of the guard is in contact with the tissue, which prevents current from arcing between the first electrode and the second electrode without passing through the tissue.

Catheters for imaging, sensing electrical potentials, and ablating tissue

An acoustic imaging system for use within a heart has a catheter, an ultrasound device incorporated into the catheter, and an electrode mounted on the catheter. The ultrasound device directs ultrasonic signals toward an internal structure in the heart to create an ultrasonic image, and the electrode is arranged for electrical contact with the internal structure. A chemical ablation device mounted on the catheter ablates at least a portion of the internal structure by delivery of fluid to the internal structure. The ablation device includes a material that vibrates in response to electrical excitation, the ablation being at least assisted by vibration of the material. The ablation device may alternatively be a transducer incorporated into the catheter, arranged to convert electrical signals into radiation and to direct the radiation toward the internal structure. The electrode may be a sonolucent structure incorporated into the catheter, through which the ultrasound device is arranged to direct signals. An acoustic marker mounted on the catheter emits a sonic wave when electrically excited. A central processing unit creates a graphical representation of the internal structure, and super-imposes items of data onto the graphical representation at locations that represent the respective plurality of locations within the internal structure corresponding to the plurality of items of data. A display system displays the graphical representation onto which the plurality of items of data are super-imposed.

Monopolar plasma curette electrosurgical device

An electrosurgical device including the disclosure describes an electrosurgical device including an elongated body having a tubular section extending from a proximal end to a distal end and defining an evacuation channel configured to evacuate tissue from the distal end to the proximal end, a curette at the distal end of the tubular section, wherein the curette defines a perimeter cutting edge that forms a distal opening to the evacuation channel, a plasma cutting electrode defined by the perimeter cutting edge of the curette, where the plasma cutting electrode is configured to operate in a monopolar configuration to deliver radio frequency (RF) plasma energy to adjacent tissue to cut a volume of the target tissue, and a dielectric coating on at least a portion of the curette, the dielectric coating electrically insulating the curette from target tissue and the volume of cut target tissue, wherein the dielectric coating comprises a ceramic material.

Method for mapping, ablation, and stimulation using an endocardial catheter

Endocardial mapping and/or ablation system for introduction into a chamber of the heart formed by a wall by passage through a lumen leading to the chamber in the heart having blood therein comprising a catheter probe with proximal and distal extremities and having an elongate tubular member with at least one lumen extending therethrough extending the length thereof and with a distal extremity. A plurality of longitudinally and radially spaced apart electrodes are provided. An expandable device is secured to the distal extremity of the flexible elongate tubular member and is movable between a contracted position and an expanded position. The electrodes are mounted on the expandable device whereby when the expandable device is moved to the expanded position in a chamber of the heart the electrodes are moved into engagement with the wall forming the chamber of the heart in which the expandable device is disposed. An elongate element is coupled to the expandable device for moving the expandable device between the contracted and expanded positions. The expandable device has spaces therein through which the blood can flow when the expandable device is in an expanded position. Leads are in contact with the electrodes and extending through the flexible elongate tubular member. Electrical apparatus is connected to the leads for performing electrical functions with respect to the electrodes.

Catheter having cooled multiple-needle electrode

An improved ablation catheter with at least one multiple-needle electrode can be used in ablating the arrhythmogenic region instead of an arrhythmogenic point of a patient. This catheter is particularly useful for treating the patient with atrial fibrillation (AFib) indications. A catheter suitable for radiofrequency ablation of cardiac tissues comprises a delivery catheter and an inner catheter having a distal section, a distal end, a proximal end and at least one lumen extending therebetween. The ablation catheter has a temperature sensor and a close-loop temperature control. The ablation catheter having at least one multiple-needle electrode is inserted into the chambers of the heart to create a plurality of deep, large, and contiguous lesions by applying radiofrequency energy and cooled fluid to said electrode.

Motorized cutting and fastening instrument having control circuit for optimizing battery usage

A surgical cutting and fastening instrument. The instrument comprises an end effector and a shaft connected to the end effector. The shaft comprises a drive train for powering the end effector. The instrument also comprises a handle connected to the shaft. The handle comprises an electric, DC motor connected to the drive train for powering the drive train and a DC power source comprising one or more batteries. The handle also comprises a power regulator having an input connected to the DC power source and an output connected to an input of the motor. The power regulator comprises a power converter and a control circuit for controlling the power converter. The control circuit controls the voltage set point for the power converter so that voltage delivered from the power source is less than the voltage at which the power source delivers maximum power.

Surgical instrument comprising electrode support

FIELD: medicine.SUBSTANCE: invention relates to medicine, namely, to a surgical instrument for the electrosurgical monopolar or bipolar application of current to biological tissue, in particular a sealing instrument. Electrosurgical instrument comprising a branch comprises an electrode plate defined by a first edge contour and an electrode support defined by a second edge contour. There is a seam between the electrode plate and the electrode holder, the neck of which being placed between the boundary contours, and the electrode plate and the electrode support are monolithically connected via a plurality of webs.EFFECT: invention provides an improved surgical instrument with improved branches for open-surgical, laparoscopic and endoscopic use.21 cl, 12 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 670 681 C2 (51) МПК A61B 18/12 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК A61B 18/12 (2006.01) (21)(22) Заявка: 2015104561, 11.02.2015 (24) Дата начала отсчета срока действия патента: Дата регистрации: (73) Патентообладатель(и): ЭРБЕ ЭЛЕКТРОМЕДИЦИН ГМБХ (DE) 24.10.2018 (56) Список документов, цитированных в отчете о поиске: US 2004/0049185 A1 11.03.2004. US 12.02.2014 EP 14154832.1 (43) Дата публикации заявки: 27.08.2016 Бюл. № 2011/0257680 A1 20.10.2011. SU 1223895 A 15.04.1986. US 6113598 A 05.09.2000. 24 (45) Опубликовано: 24.10.2018 Бюл. № 30 2 6 7 0 6 8 1 R U (54) ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ (57) Реферат: Изобретение относится к медицине, а именно причем горловина щели расположена между к хирургическому инструменту для граничными контурами, а электродная пластина электрохирургического монополярного или и электрододержатель монолитно соединены друг биполярного приложения тока к биологической с другом посредством перемычек. Изобретение ткани, прежде всего к соединяющему обеспечивает улучшенный хирургический инструменту. Электрохирургический инструмент инструмент с улучшенной браншей для ...

Тонкопленочный электрический элемент и способ его изготовления

Использование: в качестве биодатчика как биологически совместимый электрический элемент для применения в теле человека или в другом окружении ионной жидкости. Сущность изобретения: тонкопленочный электрический элемент содержит расположенную на изолирующей пленке электропроводную пленку, выполненную из двух металлических адгезионных слоев и слоя благородного металла между ними. Проводящая пленка дополнительно изолирована полимерной оболочкой. Способ изготовления тонкопленочного электрического элемента включает формирование на поверхности подложки изолирующей пленки, электропроводящей пленки. Изолирующую пленку формируют нанесением на поверхность жесткой подложки раствора и последующим отверждением этого раствора до получения слоя полимидной пленки, а электропроводящую пленку формируют путем последовательного нанесения на изолирующую пленку первого адгезийного металлического слоя, слоя благородного металла и второго адгезионного металлического слоя. 2 с. и 5 з. п. ф-лы, 9 ил. 59$567У0сСс ПЧ Го РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ (19) (51) МПК ВИ” 2049 365‘ 13) Сл Н ОЛ Е 27/01 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 4894779/25, 12.02.1991 (30) Приоритет: 14.02.1990 Ц$ 07/479897 (46) Дата публикации: 27.11.1995 (56) Ссылки: 1. Патент США п 4310571, кл. Н 01С 17/06, 1982.2. Патент США М 4697335, кл. Н 01С 17/04, 1983. (71) Заявитель: Эли Лилли энд Компани (1$) (72) Изобретатель: Джеймс Уолтер Геллер[Ц3$], Кирк Уиллис Джонсон[Ц$], Дэвид Дипсон[и$] (73) Патентообладатель: Эли Лилли энд Компани (0$) (54) ТОНКОПЛЕНОЧНЫЙ ЭЛЕКТРИЧЕСКИЙ ЭЛЕМЕНТ И СПОСОБ ЕГО ИЗГОТОВЛЕНИЯ (57) Реферат: Использование: в качестве биодатчика как биологически совместимый электрический элемент для применения в теле человека или в другом окружении ионной жидкости. Сущность изобретения: тонкопленочный электрический элемент содержит расположенную на изолирующей пленке электропроводную пленку, выполненную из двух металлических адгезионных слоев и слоя ...

Matter manipulator with conductive coating

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

一种多功能高频电切开刀

本发明提供一种多功能高频电切开刀，包括处理部，护套部，操作部。处理部具有电极和夹子组件，电极可用于组织切割和注射液体，电极具有空心管状部，电极相对于护套部的远端可以推出或收回，夹子组件用于组织止血，所述夹子组件相对于护套部的远端可以推出或收回；护套部，位于所述处理部的近端，包括空心拉杆和弹簧管；操作部，位于所述护套部的近端，包括通过导线连接所述电极的高频电流接头，通过操作线驱动所述电极移动的组件，驱动所述空心拉杆移动的构件，以及可以使液体流通到所述电极的空心管状部的液体入口。液体可从电极空心管状部中通过，进行粘膜下层注射以便隆起粘膜组织，也可以对出血部位进行清洗。

Medical self-expansion type stent

본 발명은 의료용 자가 팽창형 스텐트에 관한 것으로서, 열에 의해 자가 팽창하며 발열하는 스텐트 본체; 상기 스텐트 본체에 길게 펼쳐지게 적층되고, 전기에너지를 광에너지로 변환하여 발열하는 스트레처블 엘이디; 및 상기 스트레처블 엘이디를 상기 스텐트 본체에 고정하도록 피막을 형성하며, 열에 의해 자가 팽창하는 피막 형성부를 포함하는 것을 특징으로 한다. The present invention relates to a self-expandable stent for medical use, comprising: a stent body that self-expands and generates heat by heat; a stretchable LED that is stacked on the stent body to be stretched and heats up by converting electrical energy into light energy; and a film forming part that forms a film to fix the stretchable LED to the stent body, and self-expands by heat.

Basket catheter with insulated ablation electrode

本发明题为“具有绝缘消融电极的篮形导管”。本发明公开了一种导管，该导管包括用于插入患者的器官中的轴和可扩张远侧端部组件，该可扩张远侧端部组件耦接到轴和导管的顶点，并且包括多个长条。在该多个长条中的至少给定长条中，该给定长条的长度的至少六十％是非绝缘的并且被配置为与该器官的组织进行接触并将射频(RF)脉冲施加到该组织。

Ultrasonic treatment device

処置装置（２０）は、送水路（１２５）を流れた液体が外部に流出するためにシースユニット（６０）の先端部に配設されている先端開口部（１２７）と、先端開口部（１２７）から外部に突出するように超音波プローブ（５１）の先端部に配設され、超音波振動によって処置部位（２００）を処置する処置部（７０）とを有している。処置部（７０）は、先端開口部（１２７）から流出した液体と超音波振動とによって、処置部位（２００）と当接した状態で処置部位（２００）を処置する処置領域（７０ｃ）と、親水コートが塗布されることで形成され、処置領域（７０ｃ）から先端開口部（１２７）に位置する処置部（７０）の端部まで配設されるように処置部（７０）の周面の一部に配設されている親水領域（７５ａ）とを有する。   The treatment device (20) includes a distal end opening (127) disposed at a distal end portion of the sheath unit (60) and a distal end opening portion (127) so that the liquid flowing through the water supply channel (125) flows out to the outside. And a treatment portion (70) disposed at the distal end portion of the ultrasonic probe (51) so as to protrude to the outside and treating the treatment site (200) by ultrasonic vibration. The treatment portion (70) includes a treatment region (70c) for treating the treatment portion (200) in a state of being in contact with the treatment portion (200) by the liquid flowing out from the distal end opening (127) and ultrasonic vibration. Formed by applying a hydrophilic coat, the peripheral surface of the treatment section (70) is disposed from the treatment area (70c) to the end of the treatment section (70) located at the distal end opening (127). And a hydrophilic region (75a) disposed in part.

Conductive adhesive medical electrode assembly

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Catheter with improved ablation electrode

Electrode for electrosurgical handpiece

본 발명은 전기수술 핸드피이스에 사용되는 전도성 전극에 관한 것으로서 특히, 전도성 전극이 2개로 분할 구성됨으로써 종래의 전기 수술용 핸드피이스와 같이 일반적인 수술을 할 수 있고, 비숙련 의사라 하더라도 정밀 수술이 가능하며, 집도의의 피로도를 줄일 수 있는 전기수술 핸드피이스용 전도성 전극에 관한 것이다.

Patent RU2015104561A3

`”ВУ“” 2015104561” АЗ Дата публикации: 03.05.2018 Форма № 18 ИЗ,ПМ-2011 Федеральная служба по интеллектуальной собственности Федеральное государственное бюджетное учреждение ж Я «Федеральный институт промышленной собственности» (ФИПС) ОТЧЕТ О ПОИСКЕ 1. . ИДЕНТИФИКАЦИЯ ЗАЯВКИ Регистрационный номер Дата подачи 2015104561/14(007144) 11.02.2015 Приоритет установлен по дате: [ ] подачи заявки [ ] поступления дополнительных материалов от к ранее поданной заявке № [ ] приоритета по первоначальной заявке № из которой данная заявка выделена [ ] подачи первоначальной заявки № из которой данная заявка выделена [ ] подачи ранее поданной заявки № [Х] подачи первой(ых) заявки(ок) в государстве-участнике Парижской конвенции (31) Номер первой(ых) заявки(ок) (32) Дата подачи первой(ых) заявки(ок) (33) Код страны 1. 14154832.1 12.02.2014 ЕР* Название изобретения (полезной модели): [Х] - как заявлено; [ ] - уточненное (см. Примечания) ХИРУРГИЧЕСКИЙ ИНСТРУМЕНТ С ЭЛЕКТРОДОДЕРЖАТЕЛЕМ Заявитель: ЭРБЕ ЭЛЕКТРОМЕДИЦИН ГМБХ, РЕ 2. ЕДИНСТВО ИЗОБРЕТЕНИЯ [Х] соблюдено [ ] не соблюдено. Пояснения: см. Примечания 3. ФОРМУЛА ИЗОБРЕТЕНИЯ: [Х] приняты во внимание все пункты (см. Примечания) [ ] приняты во внимание следующие пункты: [ ] принята во внимание измененная формула изобретения (см. Примечания) 4. КЛАССИФИКАЦИЯ ОБЪЕКТА ИЗОБРЕТЕНИЯ (ПОЛЕЗНОЙ МОДЕЛИ) (Указываются индексы МПК и индикатор текущей версии) Аб1В 158/12 (2006.01) 5. ОБЛАСТЬ ПОИСКА 5.1 Проверенный минимум документации РСТ (указывается индексами МПК) Аб1В 17/00, 17/ЛТ, 17/32, 18/00, 18/12 5.2 Другая проверенная документация в той мере, в какой она включена в поисковые подборки: 5.3 Электронные базы данных, использованные при поиске (название базы, и если, возможно, поисковые термины): СТРО, РЕРАТБ пе, РУУРТ, ЕАРАТГУ, Езрасепек, ]-Р1а Рае, КТРК5, РАТЕМТЗСОРЕ, Ра Зеагсп, ЗРО, ОЗРТО 6. ДОКУМЕНТЫ, ОТНОСЯЩИЕСЯ К ПРЕДМЕТУ ПОИСКА Кате- Наименование документа с указанием (где необходимо) частей, Относится к гория* относящихся к предмету ...

Adjustable impedance electrosurgical electrodes

An electrosurgical system is disclosed. The electrosurgical system includes at least one electrosurgical electrode having a resistive element and a capacitive element configured in series. The electrosurgical system also including an electrosurgical generator configured to generate electrosurgical energy having a first frequency which generates a first impedance in the at least one electrode due to capacitive reactance of the capacitive element in series. The generator is further configured to adjust the first frequency to at least one other frequency to generate a different impedance in the at least one electrode due to capacitive reactance of the capacitive element in series, thereby adjusting the temperature of at least one electrosurgical electrode.

Electrocautery method and apparatus

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

Electrocautery method and apparatus

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

Insulating boot for electrosurgical forceps

Either an endoscopic or open bipolar forceps includes a flexible, generally tubular insulating boot for insulating patient tissue, while not impeding motion of the jaw members. The jaw members are movable from an open to a closed position and the jaw members are connected to a source of electrosurgical energy such that the jaw members are capable of conducting energy through tissue held therebetween to effect a tissue seal. A knife assembly may be included that allows a user to selectively divide tissue upon actuation thereof. The insulating boot may be made from a viscoelastic, elastomeric or flexible material suitable for use with a sterilization process including ethylene oxide. An interior portion of the insulating boot may have at least one mechanically interfacing surface that interfaces with a mechanically interfacing surface formed between the shaft and a jaw member or with a mechanically interfacing surface disposed or formed on the shaft or a jaw member.

Temperature sensing return electrode pad

An electrosurgical return electrode is disclosed. The return electrode includes a conductive pad having one or more temperature monitoring zones and a patient-contacting surface configured to conduct electrosurgical energy and a temperature sensing circuit coupled to the conductive pad. The temperature sensing circuit includes at least one diode disposed within the at least one temperature monitoring zone, the at least one diode having a predetermined forward voltage drop that is indicative of temperature of at least one temperature monitoring zone.

Electrosurgical instrument reducing current densities at an insulator conductor junction

An electrosurgical instrument having opposing end effectors and a handle for effecting movement of the end effectors relative to one another, includes a pair of electrodes each including an electrically conductive surface (e.g., which can be dimensioned for sealing, clamping and/or cutting), an insulating substrate having a first edge, and an insulating layer positioned in a channel formed by the electrically conductive surface within the first edge between the conductive surface and the first edge of the insulating substrate. The insulating layer has a portion proximal to the electrically conductive surface and a portion distal from the electrically conductive surface and a gradient such that the proximal portion has a lower dielectric strength than the distal portion. A coating on one of the pair of electrodes may be disposed in at least partial non-vertical registration with a coating on the opposing one of the pair of electrodes.

Dual durometer insulating boot for electrosurgical forceps

DUAL DUROMETER INSULATING BOOT FOR ELECTROSURGICAL FORCEPS An electrosurgical forceps (10) includes a shaft (12) having a pair of jaw members (110, 120) at a distal end (16) thereof, the jaw members (110, 120) movable about a pivot from a first position wherein the jaw members (110, 120) are disposed in spaced relation relative to one another to a second position wherein the jaw members 10 (110, 120) are closer to one another for grasping tissue, a movable handle (30b) that actuates a drive assembly to move the jaw members (110, 120) relative to one another. At least one of the jaw members includes at least one mechanical interface and at lest one jaw member is adapted to connect to a source of electrical energy such that the at least one jaw member is capable of conducting energy to tissue held therebetween. A flexible is insulating boot (500) is disposed on at least a portion of an exterior surface of at least one jaw member and about the pivot, the flexible boot (500, 2600) including a first longitudinal portion made from a high durometer material (2620) and a second longitudinal portion (2720) made from a low durometer material. The high durometer material may be configured to operably retain the flexible insulating boot atop both a 20 proximal end of the jaw members and a distal end of the flexible insulating boot.

Electrosurgical instrument having a coated electrode utilizing an atomic layer deposition technique

An electrosurgical instrument includes a support member and an electrode. The electrode is disposed on the support member and has a coating disposed thereon. The coating includes a seed layer and an atomic-layer-deposition (“ALD”) layer. The ALD layer is hydrophobic or hydrophilic. The seed layer may be conductive or insulative.

Cut and seal instrument

A combined electrical tissue sealing and mechanical tissue cutting instrument. The instrument has two opposing jaw members. A removable cartridge is positioned in one of the jaw members. The cartridge includes a tissue sealing electrode and a tissue cutter. As either the tissue sealing electrode or the cutter deteriorates with use, the cartridge is replaced with a new cartridge. Cartridges are configured with various electrode geometries to accommodate various associated electro-surgical units. One or more pressure sensors in the cartridge or in the instrument jaw that supports the cartridge provide an indication that a required clamping pressure exists between the jaw members to carry out the tissue sealing. A cut and seal controller allows various actions to be carried out when particular clamping pressures are sensed, or when an indication that tissue sealing is complete is sensed.

Thermal resecting loop

A thermal surgical instrument comprising a conductor having a ferromagnetic material in electrical communication with the conductor, such that passage of electrical energy through the conductor causes substantially uniform heating of the ferromagnetic material sufficient to produce a desired therapeutic tissue effect is provided. The conductor may be shaped to facilitate resection of tissue from a patient and include a support to provide increase rigidity to the loop so that the conductor better resists bending during use. The ferromagnetic material quickly heats and cools in response to a controllable power delivery source. The thermal surgical instrument can be used for substantially simultaneously resecting tissue with hemostasis.

Thermally adjustable surgical tool, balloon catheters and sculpting of biologic materials

Thermally adjustable surgical tools include a conductor and a ferromagnetic material. The ferromagnetic material may be quickly heated when subjected to high frequency alternating current through the conductor. The ferromagnetic material may also cool rapidly because of its relatively low mass and the small thermal mass of the conductor. The thermally adjustable surgical tools may be used to sculpt, melt, break and/or remove biological material. The thermally adjustable surgical tools may also include balloon catheters which can heat fluid to thereby treat biological material.

Heated balloon catheter

Thermally adjustable surgical tools include a conductor and a ferromagnetic material. The ferromagnetic material may be quickly heated when subjected to high frequency alternating current through the conductor. The ferromagnetic material may also cool rapidly because of its relatively low mass and the small thermal mass of the conductor. The thermally adjustable surgical tools may be used to sculpt, melt, break and/or remove biological material. The thermally adjustable surgical tools may also include balloon catheters which can heat fluid to thereby treat biological material.

Surgical tool with inductively heated regions

An electrical conductor, such as a wire or catheter, which is coated circumferentially with a ferromagnetic material in a selected region, is fed from a high frequency alternating current source. The ferromagnetic material has a quick response in heating and cooling to the controllable power delivery. The ferromagnetic material can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures.

Layered ferromagnetic coated conductor thermal surgical tool

A thermal surgical tool comprising a conductor having a ferromagnetic material attached thereto is provided. The conductor may include a support of sufficiently high Young's modulus to resist bending when the surgical tool is being used to treat tissue. One or more intervening layers may be disposed between the support and the ferromagnetic material. Each of the intervening layers may be selected for a property that facilitates construction of the surgical tool and/or enhances a functionality of the surgical tool. The thermal surgical tool can be used for separating tissue, coagulation, tissue destruction or achieving other desired tissue effects in numerous surgical procedures.

Off -wall electrode device for nerve modulation

Systems for nerve modulation through the wall of a blood vessel are disclosed. An example system for nerve modulation may include an elongate member extending along a central elongate axis and having a proximal end and a distal end. The elongate member may have a radially expandable member disposed proximate the distal end. A tubular sheath may be cooperatively engaged with the expandable member such that the expandable member is collapsed when in the sheath and can expand when moved distally relative to and past a distal end of the sheath. The expandable member may include a plurality of electrodes and a plurality of spacer struts. Each spacer strut may be configured such that when the self-expanding member is in an expanded state the spacer strut extends out radially further than the electrodes from the central elongate axis.

System and method of controlling power delivery to a surgical instrument

Electrosurgical device for cutting and removing tissue

Electrosurgical devices including a shaft, a handle and a distal end portion. The distal end portion is formed of an electrically conductive material and includes an electrically insulating material covering a substantial portion of the distal end portion and leaving an exposed portion which acts as an active electrode for delivery of electrical energy to tissue. A conduit in the shaft extending to an opening in the distal end portion facilitates aspiration of tissue and may provide suction simultaneous with delivery of electrical energy. Systems include an electrosurgical device, a source of electrical energy and may optionally include a source of suction and/or a source of fluid delivery or irrigation.

Medical devices for modulating nerves

Medical devices and methods for making and using medical devices are disclosed. An example medical device may include a medical device for modulating nerves. The medical device may include an elongate shaft having a distal region. A balloon may be coupled to the distal region. An electrode may be disposed within the balloon. A virtual electrode may be defined on the balloon. The virtual electrode may include a conductive region having an edge and a peripheral region disposed at least partially along the edge of the conductive region. The peripheral region may be configured to dissipate forces, electrical current, or both accumulating along the edge of the conductive region.

Electrosurgical end effector assemblies and electrosurgical forceps configured to reduce thermal spread

An end effector assembly (100, 200) of an electrosurgical forceps (10, 10') includes first and second jaw members (110, 120, 210, 220). At least one of the jaw members (110, 120, 210, 220) is movable relative to the other between a spaced-apart position and an approximated position. At least one of the jaw members (110, 120, 210, 220) includes an electrically-conductive inner member (115, 125) defining an outer surface, a first electrically-insulative layer (116, 126) disposed on a portion of the outer surface of the electrically-conductive inner member (115, 125), a second electrically-insulative layer (117, 127) disposed on another portion of the outer surface of the electrically-conductive inner member (115, 125), and an electrode (118, 128) disposed on the second electrically-insulative layer (117, 127) and electrically coupled to the electrically-conductive inner member (115, 125). The electrode (118, 128) defines a tissue-treating surface of the corresponding jaw member (110, 120, 210, 220). The first electrically-insulative layer (116, 126) has a thermal conductivity greater than that of the second electrically-insulative layer (117, 127).

Nonstick conductive coating

In a preferred embodiment, there is provided a conductive non-stick electrode for use with a hemostatic tissue cutting scalpel wherein, a first layer of conductive material having a textured working surface for contacting tissue is adherently deposited along the cutting edge of the scalpel, and a second coating of non-stick material is deposited thereon at least partially filling the textured surface, so that portions of the conductive material are exposed and the electrode is thereby conductive along said working surface but non-sticking while in contact with tissue.

Electrically heated surgical cutting instrument

A surgical cutting instrument includes an electrically heated cutting edge and an automatic control system for maintaining the cutting edge at a constant high temperature for sterilizing the blade, cutting tissue, and cauterizing the incised tissue to reduce hemorrhage from the cut surfaces of the tissues (hemostasis).

Surgical cutting instrument

The present invention provides a surgical cutting instrument having a blade portion and cutting edge therefor with electric input elements located near the cutting edge for cutting the tissue and cauterizing the surfaces of the incision, thereby allowing surgery to be more rapidly performed. This is accomplished in accordance with the illustrated embodiments of this invention by providing electrodes of opposed polarity, applied to the blade, near the cutting edge. With an electrical potential applied, no current will flow between the electrodes and no heat is produced unless the electrode gap is bridged by a conducting medium such as a high conductivity physiological fluid. Heat is then generated by electric discharge below an arcing threshold in all areas where the blade is in contact with moist tissue. Little electric discharge or heat occurs elsewhere. Moreover, if movement of the blade is halted, heat generation will substantially diminish as the cut tissue becomes dry as a result of cauterization. A process according to the present invention may include hemostasis of intact tissue and selected use of the instrument for cutting other materials compatible with the process.

Electrosurgical apparatus employing constant voltage and methods of use

Methods and apparatus are provided for use in performing electrosurgery, wherein a power supply supplies an electrosurgical instrument 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 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 electrosurgcial generators and previously known electrosurgical instruments, wherein the voltage amplitude and waveform is modified to the desired regime.

Electrosurgical generator adaptors

Adaptors are provided for use with electrosurgical bipolar instruments and standard commercially available electrosurgical generators that reduce coagulum buildup and sticking on electrosurgical instruments. A first type of adaptor converts a high voltage, high crest factor output voltage waveform typical of conventional electrosurgical generators to a more desirable lower voltage, lower crest factor regime. A second type of adaptor limits the peak open-circuit voltage supplied by a conventional electrosurgical generator to an electrosurgical instrument.