СПОСОБ СОЗДАНИЯ НИЗКООМНОГО ЭЛЕКТРИЧЕСКОГО СОЕДИНЕНИЯ МЕЖДУ КОЛЬЦЕВЫМ ЭЛЕКТРОДОМ РАЗЪЕМНОГО ТИПА И ПРОВОДОМ С ПОМОЩЬЮ КОНТАКТНОГО ДАВЛЕНИЯ

... 1. Способ прикрепления разъемного кольцевого электрода на трубку катетера, включающий:обеспечение трубки по меньшей мере с одним просветом, причем боковая стенка и по меньшей мере одно отверстие в боковой стенке обеспечивают сообщение между по меньшей мере одним просветом и наружной стороной трубки;прохождение электродного провода по меньшей мере через один просвет и по меньшей мере через одно отверстие с целью обнажить дистальный участок электродного провода;расположение дистального участка электродного провода на наружной поверхности трубки;установку разъемного кольцевого электрода на наружной поверхности трубки с перекрыванием отверстия и дистального участка электродного провода;обеспечение электропроводящего адгезива между кольцевым электродом и наружной поверхностью трубки.2. Способ по п. 1, в котором обеспечение электропроводящего адгезива включает нанесение пленки электропроводящего адгезива на внутреннюю поверхность разъемного кольцевого электрода перед установкой его на наружную ...

BIOPSIEZANGE MIT TRENNBAREN, PROXIMALEN GRIFF- UND DISTALEN KIEFERTEILEN

System für Vermessung und Ablation des Endocardium

Endoskopische chirurgische Instrumente

FABRIC PROBE ARRANGEMENT WITH STABILIZER ON VACUUM BASIS

ELECTRICALSURGICAL INSTRUMENT AND OPERATING TECHNIQUE

NICHTINVASIVE DEVICES AND SYSTEMS FOR SHRINKING FABRICS

ELECTRODES FOR THE PRODUCTION OF CERTAIN SAMPLES OF PATHOLOGICALLY CHANGED FABRIC

MONOPOLY-ACRE/BIPOLAR DEVICE FOR ENDOMETRIALEN ABLATION

DEVICES, PROCEDURES AND ARRANGEMENTS FOR THE RATIONALISATION OF FABRIC

FLEXIBLE ELECTRODE STRUCTURE

METHOD FOR MAKING A LOW OHMIC PRESSURE-CONTACT ELECTRICAL CONNECTION BETWEEN SPLIT RING ELECTRODE AND LEAD WIRE

A method for attaching a split ring electrode to a catheter tip section includes providing a tubing with a lumen and an opening in the tubing side wall, passing an electrode lead wire through the opening, and wrapping the lead wire around the tubing. A split ring electrode is mounted on the tubing over the wrapped lead wire and opening, with electrically-conductive thermoplastic elastomeric adhesive applied between the ring electrode and the outer surface of the tubing, and reheated to reflow.

Matter manipulator with conductive coating

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

Forceps drive shaft

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

Forceps motion transfer assembly

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

Endoscopic biopsy forceps devices with selective bipolar cautery

Electro-cautery catheter

Electrosurgical pencil with drag sensing capability

Method and apparatus for controlling power delivered by electrosurgical probe

A method of controlling RF power delivered from a bipolar electrosurgical instrument into a biological tissue. The method comprises controlling the profile of a RF waveform by: setting a maximum voltage limit for a voltage applied across the bipolar electrosurgical instrument; calculating a tissue resistance, the calculating step including a correction for an impedance associated with the RF channel; determining an objective tissue current limit from the calculated tissue resistance and a predetermined power dissipation target; and dynamically adjusting the current limit based on the determined objective tissue current limit. This control method may ameliorate the impact of an increased cable length on the accuracy of control of RF waveforms delivered to the tip of the probe.

Circumferential ablation device assembly and method

Cardiac tissue ablation device

Method to detect and electrosurgically treat aberrant myoelectric activity

RATCHET LOCKING MECHANISM FOR SURGICAL INSTRUMENTS

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

INTEGRATED TISSUE HEATING AND COOLING APPARATUS

Systems, and methods integrate the control of an energy generator (38), to supply energy to an electrode structure to heat a tissue region, and the control of a pumping mechanism (44), to supply cooling fluid to control tissue temperature in the region.

ELECTROSURGICAL TIP

The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to an electrosurgical surgical tip that includes a conductive and lowprofile cutting surface to provide high current density radiofrequency energy with minimal thermal damage to surrounding tissues. For example, an electrosurgical tip of the present disclosure may include a ring of conductive material sputter-coated around a distal opening of a non-conductive base component and a strip of conductive material sputter-coated along a longitudinal axis of the non-conductive base component.

ELECTROSURGERY SURGICAL BLADE

LOOP STRUCTURES FOR SUPPORTING DIAGNOSTIC AND THERAPEUTIC ELEMENTS IN CONTACT WITH BODY TISSUE

A probe that facilitates the creation of circumferential lesions in body tissue. The probe includes a elongate body and a loop structure, in the form of a helical structure or other loop structure, that supports electrodes or other operative elements against the body tissue.

IMPROVED HEAT TRANSFER DURING ABLATION PROCEDURES

Described embodiments include an apparatus that includes an intrabody probe and an electrode coupled to a distal end of the intrabody probe. The electrode includes a flexible electrically-insulating substrate, comprising a substrate surface. The electrode further includes a layer of an electrically-conducting metal covering at least part of the substrate surface. The electrode further includes a metallic sheet, comprising an inner sheet surface, and an outer sheet surface shaped to define multiple depressions. The electrode further includes an adhesive, which fills the depressions and bonds the outer sheet surface to the layer of the electrically-conducting metal. Other embodiments are also described.

METHOD TO TREAT GASTRIC REFLUX

The present invention comprises a method of treating a sphincter that provides a sphincter electropotential mapping device with at least one of a mapping electrode (22) or a treatment electrode (88). The sphincter electropotential mapping device is introduced into at least a portion of the sphincter, the lower esophageal sphincter, stomach, the cardia or the fundus. Bioelectric activity causing a relaxation of the sphincter is detected and energy is delivered from either the mapping electrode (22) or the treatment electrode (88) to treat the bioelectric activity.

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.

CABLE FOR CONVEYING RADIOFREQUENCY AND/OR MICROWAVE FREQUENCY ENERGY TO AN ELECTROSURGICAL INSTRUMENT

Embodiments of the invention provide a hollow cable for transmitting radiofrequency and/or microwave frequency energy to an electrosurgical instrument, wherein the hollow cable is provided with electrical connectors for forming a bipolar electrical connection with an electrosurgical instrument that fits within, e.g. slides relative to, the hollow cable. The connectors can be conductive protrusions extending in an axial direction on opposite sides of the cable. The protrusions can be tabs, fins, rods, pins, or wires. The protrusions can be strips which engage corresponding terminals on the instrument. The transmission line structure of the invention can have a greater diameter then convention coaxial cables, which can minimise loss whilst still providing access for control wires and/or fluid to reach an surgical instrument. The cable can be used with multiple instruments.

ELECTROSURGICAL INSTRUMENT AND METHOD OF USE

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

BIPOLAR/MONOPOLAR ENDOMETRIAL ABLATION DEVICE AND METHOD

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

ATRIAL MAPPING AND ABLATION CATHETER SYSTEM

A recording and ablation catheter system for creating linear lesions in the right atrial chamber of a heart is disclosed which includes an array of readily controlled electrodes (143) arcuate distal working catheter shapes that are easily deployed to contact the inner wall surface of the recording and mapping of impulses and thereafter facilitates sustained contact so that linear lesions can be produced from an array of mapping and ablation electrode devices (143) serially spaced along the working catheter shape.

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.

COMBINATION THERAPY TO TREAT OSTEOPOROSIS

The present invention provides a pharmaceutical composition for treating or preventing osteoporosis in a mammal in need of treatment which composition comprises an effective amount of a compound of formula I (see fig.I) wherein R1 and R2 may be the same or different provided that, when R1 and R2 are the same, each is a methyl or ethyl group, and , when R1 and R2 are different, one of them is a methyl or ethyl group and the other is hydrogen or a benzyl group; or a pharmaceutically acceptable salt thereof; together with a bone resorption inhibiting polyphosphonate, or with parathyroid hormone.

UTERINE TREATMENT APPARATUS

An apparatus to treat a uterus includes a deployable member (22) configured to be positioned in a uterine cavity in at least a partially deployed state to define a microwave chamber (20) in an interior of the deployable member (22), and removed from the uterine cavity in a non-deployed state. The deployable member (22) is at least partially microwave energy absorbable and formed of a fluid permeable material to house and controllably release a fluidic medium (34) from the microwave chamber (20) when the deployable member (22) is positioned in the uterine cavity in the at least partially deployed state. A microwave emitter (24) is positioned in the microwave chamber (20), the microwave emitter (24) is configured to be coupled to a microwave energy source and deliver microwave energy to the fluidic medium (34), wherein the fluidic medium (34) transfers thermal energy from the microwave emitter (24) to a uterine structure.

BIPOLAR/MONOPOLAR ENDOMETRIAL ABLATION DEVICE AND METHOD

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

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.

APPARATUS FOR ELECTROSURGERY

Apparatus for electrosurgery (1) of a type apt to the treatment of neoplastic tissues by thermoablation, comprising at least two pairs of electrodes (4,5,6,7;41,51,61,71) and a generator of electrosurgical current (2,3,) to make a thermoablation current flow between the electrodes according to a bipolar thermoablation mode.

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 ...

ANTI-MICROBIAL ELECTROSURGICAL ELECTRODE AND METHOD OF MANUFACTURING SAME

An electrosurgical device including a reinforcing underlayment having a non-stick, anti-microbial coating. In one embodiment, the coating includes a non-stick material having anti-microbial particles interspersed in the non-stick material. This coating is applied to the surfaces of the electrode to minimize the build-up of charred tissue on the surfaces of the electrode. Also, the coating tends to kill harmful organisms residing on the surfaces of the electrode. In another embodiment, a primer coating is initially applied to the surfaces of the electrode. A plurality of anti-microbial particles are then applied to the primer coating layer and engage and are embedded in the primer coating layer. A top coat including a non-stick material is applied to the anti-microbial particle layer. In either embodiment, the coating layers applied to the surfaces of the electrode are cured to harden and adhere the layers to the electrode.

Catheter spine assembly with closely-spaced bipole microelectrodes

An electrophysiologic catheter with a distal electrode assembly carrying very closely-spaced bipole microelectrodes on a plurality of divergent spines that can flexibly spread over tissue surface area minimized detection of undesirable noise, including far-field signals. Each spine has a flexible microelectrode panel having a substrate, at least one pair of microelectrodes, a trace for each microelectrode, and a soldering pad. Adjacent microelectrodes of a bipole pair are separated by a space gap distance ranging between about 50-300 microns. Each microelectrode may have a width of about 200 or 300 microns.

Structures for deploying movable electrode elements

An electrode support structure comprises a guide body having at its distal end a flexible spline leg. The spline leg is flexed to define an arcuate shape to facilitate intimate contact against tissue. An electrode element is carried by the spline leg for movement along its axis. The structure includes a control element coupled to the electrode element. The control element remotely imparts force to move the electrode element along the axis of the spline leg. Therefore, in use, the physician can cause the electrode element to travel along a path that the spline leg defines, without otherwise changing the location of the guide body.

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.

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.

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, ...

Assemblies to visualize and treat sphincters and adjoining tissue regions

Assemblies for treating a tissue region at or near a sphincter have a support structure with a distal end and an electrode carried by the support structure for contact with the tissue region. A lumen in the support structure accommodates passage of a body through the support structure and beyond the distal end of the support structure. The body can comprise a guide wire to guide deployment of the support structure, or an endoscope to permit visualization of the support structure from beyond the distal end of the support structure.

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 ...

Heat Transfer Through a Catheter Tip

Described embodiments include an apparatus that includes a flexible electrically-insulating substrate, including an inner surface and an outer surface, and shaped to define (i) multiple narrower channels passing between the inner surface and the outer surface, and (ii) one or more wider channels passing between the inner surface and the outer surface. The apparatus further includes an outer layer of an electrically-conducting metal covering at least part of the outer surface, an inner layer of the electrically-conducting metal covering at least part of the inner surface, a plating layer of the electrically-conducting metal that plates the wider channels such as to connect the outer layer to the inner layer, and respective columns of the electrically-conducting metal that fill the narrower channels such as to connect the outer layer to the inner layer. Other embodiments are also described.

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.

Catheter with irrigated tip electrode with porous substrate and high density surface micro-electrodes

A catheter has a multifunctional “virtual” tip electrode with a porous substrate and a multitude of surface microelectrodes. The surface microelectrodes are in close proximity to each other and in a variety of configurations so as to sense tissue for highly localized intracardiac signal detection, and high density local electrograms and mapping. The porous substrate allows for flow of conductive fluid for ablating tissue. The surface microelectrodes can be formed via a metallization process that allows for any shape or size and close proximity, and the fluid “weeping” from the porous substrate provides more uniform irrigation in the form of a thin layer of saline. The delivery of RF power to the catheter tip is based on the principle of “virtual electrode,” where the conductive saline flowing through the porous tip acts as the electrical connection between the tip electrode and the heart surface. The substrate and the surface electrodes are constructed of MRI compatible materials so that ...

ELECTRODE CONFIGURATIONS FOR DIAGNOSIS OF ARRHYTHMIAS

An apparatus includes a shaft and an end effector at a distal end of the shaft. The end effector is sized to fit in an anatomical passageway within a subject's cardiovascular system. The end effector includes at least one electrode pair that is configured to contact cardiovascular tissue and thereby pick up electrocardiogram signals. Each electrode pair includes first and second electrodes spaced apart along a longitudinal axis from each other by a gap area located between the electrodes, the gap area having a gap length with respect to the longitudinal axis such that a length of one of the electrodes along the longitudinal axis is equal to or greater than the gap length; and a ratio of an area defined by the gap area to one electrode area is equal to or less than one.

Electrosurgical forceps with composite material tips

An electrosurgical forceps has at least the tip of one blade member formed of a composite material having aligned elongated particles of nickel interspersed in a matrix of silver particles. The tip can be provided as a tip member attached, such as by brazing, to the body of the blade member, or the entire blade member can be formed of the silver/nickel composite material. In another embodiment, the tip or blade member is formed of a dispersion strengthened silver or copper composite material.

Ablation catheter with flexible tip

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

APPARATUS TO ELECTROSURGICALLY TREAT ESOPHAGEAL SPHINCTERS

An apparatus to treat a sphincter includes a catheter means including a catheter means distal portion means. An energy delivery device means is coupled to the catheter means and includes a tissue piercing distal end. The energy delivery device means is configured to pierce a sphincter exterior surface, advance a sufficient distance in an interior of the sphincter to a tissue site, deliver energy to the tissue site and create controlled cell necrosis of the sphincter in order to reduce a frequency of sphincter relaxation. A cable means is coupled to the energy delivery device means.

INCISION APPLIANCE

ЭЛЕКТРОД ДЛЯ ЭЛЕКТРОХИРУРГИЧЕСКОГО ИНСТРУМЕНТА

Изобретение относится к медицинской технике, а именно к электроду для электрохирургического инструмента. Электрод для электрохирургического инструмента, предназначенного для плазменного воздействия на биологическую ткань, содержит основную часть, имеющую по меньшей мере одну плоскую сторону и дистально ориентированный кончик, от которого поперечное сечение электрода увеличивается в проксимальном направлении. Основная часть электрода снабжена теплоотводным приспособлением, выполненным в виде слоя, занимающего всю плоскую сторону основной части, а теплопроводность комбинации материалов основной части и теплоотводного приспособления электрода составляет более 20 Вт/(м*К). Использование изобретения позволяет обеспечить уменьшение выгорания электрода и продление срока его службы, повышение эффективности рассеяния теплоты. 11 з.п. ф-лы, 8 ил.

ЭЛЕКТРОДНОЕ УСТРОЙСТВО ЭЛЕКТРОХИРУРГИЧЕСКОГО ИНСТРУМЕНТА

Изобретение относится к медицинской технике, а именно к электрохирургическим инструментам. Электродное устройство электрохирургического инструмента содержит по меньшей мере одну электрически проводящую часть электрода и одну электрически изолирующую часть держателя, при этом как часть электрода, так и часть держателя изготовлены из керамического материала. При изготовлении инструмента неспеченная заготовка части держателя и неспеченная заготовка части электрода соединены друг с другом, в частности, посредством материала с образованием одной композитной неспеченной заготовки и совместно спечены. Использование изобретения позволяет повысить долговечность работы инструмента. 2 н. и 8 з.п. ф-лы, 10 ил.

ЭЛЕКТРОХИРУРГИЧЕСКОЕ УСТРОЙСТВО ДЛЯ ПОДАЧИ РАДИОЧАСТНОТНОЙ ЭНЕРГИИ И/ИЛИ МИКРОВОЛНОВОЙ ЭНЕРГИИ В БИОЛОГИЧЕСКУЮ ТКАНЬ

KATHETER ZUR BILDDARSTELLUNG, ZUR ANZEIGE ELEKTRISCHER SIGNALE UND ZUR ABLATION

KATHETER-ANORDNUNG ZUR KARTIERENDEN ERFASSUNG UND ZUR ABTRAGUNG VON VORHOF-GEWEBE

Katheter mit einer Elektrode sowie Verfahren zu ihrer Herstellung

ELEKTROCHIRURGISCHES INSTRUMENT.

Steuerbare Schlaufenstruktur

Electrosurgical apparatus for delivering RF and/or microwave energy into biological tissue

BIO PSI PLIERS WITH SEPARABLE ONES, PROXIMAL ONES SEIZE ONE AND DISTAL ONE KIEFERTEILEN

PAWL MECHANISM FOR SURGICAL INSTRUMENTS

RADIAL KIEFERZANGE FOR THE EXECUTION OF A BIOPSIE

SYSTEM FOR THE CONTROL OF FABRIC ABLATION WITH TEMPERATURE SENSORS

CONTROLLABLE LOOP STRUCTURE

SYSTEMS AND DEVICES FOR THE PRODUCTION OF TRANSMURALEN LESIONS

INTEGRATED EQUIPMENT FOR THE HEATING UP AND COOLING OF FABRIC

INTEGRATED EQUIPMENT FOR THE HEATING UP AND COOLING OF FABRIC

Combination therapy to treat osteoporosis

Improved bipolar scissors

Expandable catheter assembly with flexible printed circuit board

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 ...

Catheter assembly, catheter and multi-port introducer for use therewith

Ablation antenna including customisable reflectors

ABLATION ANTENNA INCLUDING CUSTOMISABLE REFLECTORS An ablation system (10) for directing energy to a target volume of tissue, comprising an ablation antenna probe (12) including at least one radiating portion configured to output electromagnetic radiation; and at least one electromagnetic shielding reflector (200) configured for removable positioning on the antenna probe (12), wherein the at least one electromagnetic shielding reflector (200) is configured to block electromagnetic radiation from the at least one radiating portion through the at least one electromagnetic shielding reflector (200) such that a particular directionality of the electromagnetic radiation from the at least one radiating portion to a target volume of tissue is achieved.

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.

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.

Cable for conveying radiofrequency and/or microwave frequency energy to an electrosurgical instrument

Embodiments of the invention provide a hollow cable for transmitting radiofrequency and/or microwave frequency energy to an electrosurgical instrument, wherein the hollow cable is provided with electrical connectors for forming a bipolar electrical connection with an electrosurgical instrument that fits within, e.g. slides relative to, the hollow cable. The connectors can be conductive protrusions extending in an axial direction on opposite sides of the cable. The protrusions can be tabs, fins, rods, pins, or wires. The protrusions can be strips which engage corresponding terminals on the instrument. The transmission line structure of the invention can have a greater diameter then convention coaxial cables, which can minimise loss whilst still providing access for control wires and/or fluid to reach an surgical instrument. The cable can be used with multiple instruments.

Bipolar sphincterotome

A bipolar sphincterotome may include an elongate tubular member, a cutting wire, and a return path. The return path may include a conductive ink portion disposed on an outer surface at a distal portion of the tubular member. The return path may also include a return wire disposed within the tubular member that is electrically coupled to the conductive ink portion. In some example embodiments, the return wire may be disposed within a lumen configured to have two or more functions, one of which being to house the return wire. Additionally, in some example embodiments, the conductive ink portion may be circumferentially disposed on the outer surface to provide visual access to a wire guide lumen. Also, for some example embodiments, the bipolar sphincterotome may include two electrically isolated return paths.

LOOP STRUCTURES FOR SUPPORTING DIAGNOSTIC AND THERAPEUTIC ELEMENTS IN CONTACT WITH BODY TISSUE

A probe that facilitates the creation of circumferential lesions in body tissue. The probe includes a elongate body and a loop structure, in the form of a helical structure or other loop structure, that supports electrodes or other operative elements against the body tissue.

ELECTROSURGICAL INSTRUMENT AND METHOD OF USE

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

ELECTROSURGICAL INSTRUMENT AND METHOD OF USE

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

BALLOON WITH SURFACE ELECTRODES AND INTEGRAL COOLING FOR RENAL NERVE ABLATION

A catheter arrangement includes a flexible shaft and a balloon disposed at a distal end of the shaft and configurable for deployment within a target vessel of the body, such as a renal artery. Ablation electrodes, supported by a balloon wall, are arranged in a predefined pattern. The electrodes deliver electrical energy sufficient to ablate target tissue, such as perivascular renal nerves, proximate the target vessel wall when the balloon is in a deployed configuration. A cooling arrangement is encompassed at least in part by the balloon and provides cooling to at least the electrodes during ablation such that a location at which steady-state ablative heating begins is translated from an electrode-tissue interface at the target vessel wall to a location a predetermined distance away from the electrode-tissue interface.

ELECTROSURGICAL APPARATUS FOR TREATING GASTROESOPHAGEAL REFLUX DISEASE (GERD) AND METHOD

An apparatus includes an expandable member. The expandable member is sized to be positionable in a sphincter. An energy delivery device is positioned on a surface of the expandable member. The energy delivery device has a configuration that provides sufficient energy delivery to create lesions in the interior of the sphincter. When the expandable member is removed from the sphincter, the sphincter returns to its closed or contracted configuration.

METHOD FOR MAKING A LOW OHMIC PRESSURE-CONTACT ELECTRICAL CONNECTION BETWEEN SPLIT RING ELECTRODE AND LEAD WIRE

A method for attaching a split ring electrode to a catheter tip section includes providing a tubing with a lumen and an opening in the tubing side wall, passing an electrode lead wire through the opening, and wrapping the lead wire around the tubing. A split ring electrode is mounted on the tubing over the wrapped lead wire and opening, with electrically-conductive thermoplastic elastomeric adhesive applied between the ring electrode and the outer surface of the tubing, and reheated to reflow.

CATHETER WITH ELECTROSURGICAL CUTTER

... 2103593 9212762 PCTABS00014 A catheter assembly (10) which permits simultaneous dilatation and incision of tissue whereby trauma and damage to the tissue due to uncontrolled tearing is reduced or eliminated comprising an elongated tubular body (13) having a distal end that carries a dilatation balloon (15) and cutting element (17) carried on the exterior of the balloon and that moves radially in concert with the exterior of the bladder as the bladder is inflated and deflated. A radiofrequency current is directed through the cutting element (17) to incise proximate tissue. Pressure can be applied to the tissue prior to cutting to facilitate separation and subsequent to cutting to inhibit bleeding.

BIOPSY FORCEPS HAVING A DETACHABLE PROXIMAL HANDLE AND DISTAL JAWS

An endoscopic biopsy forceps (10) has a detachable proximal handle portion (12) and a distal portion (14) which includes a pair of jaws (38, 40) mounted at the distal end of a flexible conduit. At least one pull wire extends through the conduit (32) and is coupled to the jaws so that movement of the pull wire(s) (42, 44) through the conduit cause s the jaws (38, 40) to open and close. The proximal end of the pull wire(s) is provided with a mating tip (50) and the proximal end of the conduit is provided with a mating sleeve (46). The handle portion includes a shaft (16) and a spool (26). The conduit (32) is detachab ly attached to the shaft (16), while the pull wire(s) (42, 44) is detachably attached to the spool (26). Attachment is effected by spring bias ed coupling devices (24, 30) which engage the mating tip (50) of the pull wire(s) and the mating sleeve (46) of the conduit.

RADIAL JAW BIOPSY FORCEPS

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

IMPROVED BIPOLAR SCISSORS

A bipolar electrosurgical scissors adapted to electrically cauterize and desiccate organic tissue prior to cutting the tissue in order to reduce or prevent bleeding. The bipolar electrosurgical scissors include a pair of scissor membersattached through an electrically insulating point. Each scissor member includes, at a distal end, a shearing surface with a plurality of electrode regions interspersed between a plurality of insulating regions. The insulator regions are offset suchthat upon closure of the shearing members, the insulation region of one shearingmember opposes a corresponding electrode on the other shearing member.

SYSTEMS AND METHODS FOR LOCATING AND GUIDING OPERATIVE ELEMENTS WITHIN INTERIOR BODY REGIONS

This invention concerns systems and methods for locating an operative element (12) within an interior body space use a locating probe (14), which includes at least one transmitting element to transmit an electric waveform output within at least a portion of the space. The systems and methods also use a sensing element (16), which is adapted to be carried by the operative element to sense a local electric waveform within the space. A processing element coupled to the sensing element generates a processed output that locates the sensing element relative to the locating probe based, at least in part, upon a differential comparison of the waveform output and the sensed local waveform.

FLEXIBLE STRUCTURES FOR SUPPORTING ELECTRODE ELEMENTS

An electrode support structure has a guide body (12) having a distal end and a stylet (80) having a bendable portion extending along an axis outside the distal end of the guide body (12). The structure also includes at least one flexible spline leg (22) having a body and a far end extending beyond the distal end of the guide body (12) and attached to the bendable portion of the stylet (80). The spline leg (22) is normally flexed between the distal guide body end and the bendable stylet portion in a first direction that extends along and radially outward of the axis of the stylet (80). At least one electrode element (28) is on the flexible spline leg (22). The bendable stylet portion (80) applies tension to flex the spline leg (22) in a second direction.

ELECTROSURGICAL ELECTRODE HAVING SILVER COMPONENT, CAPABLE OF PERFORMING SURGICAL OPERATION FOR INCISION OR BLOOD COAGULATION WITH LIVING BLADE OR POINT

PURPOSE: An electrosurgical electrode having a silver component is provided to prevent a surface of an incised tissue from being damaged and changed by reducing a contact with a tissue in a surgical operation. CONSTITUTION: An electrosurgical electrode having a silver component includes a main body(32), and a coating metal(36). The main body(32) has a core metal made of molybdenum substantially. The coating metal(36) is fixedly attached to the core metal. The coating metal is composed of a germanium of 1.5-4%, an indium of 1-2%, and a silver. The main body(32) includes a first end unit and a second operation end unit. The first end unit is formed to be attached to a hand piece for an electrosurgical operation. The second operation end unit provides a current for an electrosurgical operation to a tissue, when the first end unit is attached to an apparatus for the electrosurgical operation. The second operation end unit is located to be opposite to the first end unit. The second operation ...

Device, apparatus, and method of adipose tissue treatment

A method and apparatus for adipose tissue treatment whereby two types of electromagnetic radiation are applied to the volume of tissue to be treated, One type of the electromagnetic radiations being RF and the second type of electromagnetic radiation being visible or infrared radiation.

Apparatus, System and Method for Performing an Electrosurgical Procedure

An apparatus for performing a microwave ablation procedure is provided. The apparatus includes a catheter including an open proximal end and a closed distal end configured to percutaneously access tissue. A directional microwave antenna probe adapted to connect to a source of microwave energy selectively couples to the catheter. The directional microwave antenna is rotatable within the catheter for directing the emission of microwave energy therefrom to tissue

Apparatus, System, and Method for Performing an Electrosurgical Procedure

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

Ablation catheter with flexible tip

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

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.

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.

ELECTROSURGICAL (RF) MEDICAL INSTRUMENTS FOR CUTTING AND COAGULATING TISSUE

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

Tip for multiple beam tissue therapy

The invention provides a tip that permits therapeutic electromagnetic energy systems to deliver multiple beams of overlapping, partially overlapping, and non-overlapping electromagnetic energy in the treatment of tissue disorders and conditions. The tip finds use with laser systems, intense pulsed light systems, LED systems, radiofrequency systems, and microwave systems.

Ablation catheter with flexible electrode

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

Monopolar electrosurgical instrument, electrosurgical system, and method for producing an electrosurgical instrument

A monopolar electrosurgical instrument and electrosurgical system for treating biological tissue by a plasma. The instrument includes a tubular line for conducting a gas to the treatment location, wherein the line consists of electrically insulating material and has a distal opening for the exit of the gas in the direction of the tissue to be treated, and an electrode arranged in the region of the distal opening in the line, wherein the electrode is connectable to an electrosurgical generator to ignite a plasma discharge in the gas. Improving the ignition behavior, the inner surface of the line has an enhanced electrical conductivity in the distal opening. Furthermore, a method for producing an electrosurgical instrument for providing a line made of nonconductive material, an electrode, and enhancing the conductivity of an inner surface of the line in the region of the opening, for enhancing the conductivity in the line.

Apparatus, system and method for performing an electrosurgical procedure

An apparatus for performing a microwave ablation procedure is provided. The apparatus includes a catheter including an open proximal end and a closed distal end configured to percutaneously access tissue. A directional microwave antenna probe adapted to connect to a source of microwave energy selectively couples to the catheter. The directional microwave antenna is rotatable within the catheter for directing the emission of microwave energy therefrom to tissue

Electrosurgical (rf) medical instruments for cutting and coagulating tissue

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

Catheter apparatuses for modulation of nerves in communication with the pulmonary system and associated systems and methods

Devices, systems, and methods for the selective positioning of an intravascular neuromodulation device are disclosed herein. Such systems can include, for example, an elongated shaft and a therapeutic assembly carried by a distal portion of the elongated shaft. The therapeutic assembly is configured for delivery within a blood vessel. The therapeutic assembly can include a pre-formed shape and can be transformable between a substantially straight delivery configuration; and a treatment configuration having the pre-formed helical shape to position the therapeutic assembly in stable contact with a wall of the body vessel. The therapeutic assembly can also include a mechanical decoupler operably connected to the therapeutic assembly that is configured to absorb at least a portion of a force exerted on the therapeutic assembly by the shaft so that the therapeutic assembly maintains a generally stationary position relative to the target site.

Graphical user interface for association with an electrode structure deployed in contact with a tissue region

Systems and methods deploy an electrode structure in contact with the tissue region. The electrode structure carries a sensor at a known location on the electrode structure to monitor an operating condition. The systems and methods provide an interface, which generate an idealized image of the electrode structure and an indicator image to represent the monitored operating condition in a spatial position on the idealized image corresponding to the location of the sensor on the electrode structure. The interface displays a view image comprising the idealized image and indicator image. The systems and methods cause the electrode structure to apply energy to heat the tissue region while the view image is displayed on the display screen.

APPARATUS AND SYSTEMS FOR MINIMALLY INVASIVE DISSECTION OF TISSUES

Lysing surgical instruments and related systems and methods. In some embodiments, the instrument may comprise a lysing tip comprising at least one bead. The at least one bead may comprise an at least substantially electrically non-conductive surface and at least one lysing member defining at least one lysing segment extending within a recess defined, at least in part, by the at least one bead. The at least one bead may also protrude both distally and proximally relative to the at least one lysing member. 1. An electrosurgical lysing device , comprising: at least one bead comprising an at least substantially electrically non-conductive surface; and', 'at least one lysing member defining at least one lysing segment extending within a recess defined, at least in part, by the at least one bead, wherein the at least one bead protrudes both distally and proximally relative to the at least one lysing member., 'a lysing tip, comprising2. The electrosurgical lysing device of claim 1 , further comprising at least one structure positioned adjacent to the at least one bead claim 1 , the at least one structure comprising an at least substantially electrically non-conductive surface and at least partially defining the recess.3. The electrosurgical lysing device of claim 2 , wherein the at least one structure comprises a bead comprising an at least substantially electrically non-conductive surface.4. The electrosurgical lysing device of claim 2 , wherein the at least one structure comprises a portion of a shaft of the electrosurgical lysing device.5. The electrosurgical lysing device of claim 4 , wherein the at least one structure comprises a portion of a distal tip of the shaft.6. The electrosurgical lysing device of claim 2 , further comprising a control instrument claim 2 , wherein the at least one structure comprises a portion of the control instrument.7. The electrosurgical lysing device of claim 6 , wherein the lysing tip is configured to be coupled with and controlled by ...

one-piece stent implanter

A one-piece stent implanter comprises a front handle and a rear handle; the front end of the front handle is provided with an outer pipe whose top is flexibly connected with a cautery tip, the outer pipe is internally provided with a middle pipe and a stent; the rear handle includes a stainless steel pipe for supporting and an inner pipe positioned in the stainless steel pipe; one end of the stent is close to the cautery tip, with a certain gap kept; when the front handle is retreated along the stainless steel pipe, the outer pipe simultaneously retreats and separates from the cautery tip, positions of the middle pipe and the rear handle remain unchanged, and the stent is automatically released. 1. A one-piece stent implanter , comprising a front handle and a rear handle , wherein the front end of the front handle is provided with an outer pipe whose top is flexibly connected with a cautery tip , the outer pipe is internally provided with a middle pipe and a stent; the rear handle comprises a stainless steel pipe for supporting and an inner pipe positioned in the stainless steel pipe , the top of the inner pipe is fixedly connected to the cautery tip;one end of the middle pipe is mutually touched and connected with one end of the stent, while the other end of the middle pipe is mutually connected with the stainless steel pipe; one end of the stent is close to the cautery tip, with a certain gap kept;when the front handle is retreated along the stainless steel pipe, the outer pipe simultaneously retreats and separates from the cautery tip, positions of the middle pipe and the rear handle remain unchanged, and the stent is automatically released.2. The one-piece stent implanter of claim 1 , wherein the rear handle is provided with a conductive socket which is electrically connected with the inner pipe made from metal conductive materials claim 1 , and the cautery tip is also made from metal conductive materials.3. The one-piece stent implanter of claim 1 , wherein a ...

BIPOLAR SPHINCTEROTOME

A bipolar sphincterotome may include an elongate tubular member, a cutting wire, and a return path. The return path may include a conductive ink portion disposed on an outer surface at a distal portion of the tubular member. The return path may also include a return wire disposed within the tubular member that is electrically coupled to the conductive ink portion. In some example embodiments, the return wire may be disposed within a lumen configured to have two or more functions, one of which being to house the return wire. Additionally, in some example embodiments, the conductive ink portion may be circumferentially disposed on the outer surface to provide visual access to a wire guide lumen. Also, for some example embodiments, the bipolar sphincterotome may include two electrically isolated return paths. 1. A bipolar sphincterotome to perform a sphincterotomy at a treatment site within a patient , the bipolar sphincterotome comprising:an elongate tubular member;a cutting wire disposed within the tubular member, except for a cutting edge of the cutting wire, where the cutting edge protrudes from the tubular member;a first return path; anda second return path substantially electrically isolated from the first return path,wherein the first return path comprises a first return wire, the second return path comprises a second return wire, the first and second return wires longitudinally extending within the tubular member from a distal portion to a proximal portion of the tubular member.2. The bipolar sphincterotome of claim 1 , wherein the first return path further comprises a first conductive ink portion electrically coupled to the first return wire claim 1 , andwherein the second return path further comprises a second conductive ink portion electrically coupled to the second return wire.3. The bipolar sphincterotome of claim 2 , further comprising:a first conductive cannula disposed about the outer surface of the tubular member, the first conductive cannula ...

MEDICAL HEATER, TREATMENT INSTRUMENT, AND PRODUCTION METHOD FOR TREATMENT INSTRUMENT

A medical heater includes: a heat generating portion that is made of a material containing nickel, the heat generating portion being configured to generate heat when energized; and a passivation film that is made of nickel fluoride, the passivation film being configured to cover at least a part of a surface of the heat generating portion. 1. A medical heater comprising:a heat generating portion that is made of a material that includes nickel, the heat generating portion being configured to generate heat when energized; anda passivation film that includes nickel fluoride, the passivation film being configured to cover at least a part of a surface of the heat generating portion.2. The medical heater according to claim 1 , whereinthe heat generating portion is made of a material that includes one of: stainless steel, nickel, or a nickel alloy.3. The medical heater according to claim 1 , further comprising: electrical insulation;', 'a first plate surface; and', 'a second plate surface forming front and back surfaces of the substrate;, 'a substrate that includesa first connection portion electrically connected to a first wiring member and a second connection portion electrically connected to a second wiring member; andan electric path portion configured to provide an energization path to the heat generating portion, the heat generating portion, the first connection portion, the second connection portion, and the electric path portion are provided on the first plate surface and are connected in series along a longitudinal direction of the substrate in an order of the first connection portion, the heat generating portion, the electric path portion, and the second connection portion,', 'the heat generating portion has a higher resistance value than the first connection portion, the second connection portion, and the electric path portion, and', 'the substrate is made of a flexible material, and is folded such that the substrate includes a folding line orthogonal to the ...

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.

SURGICAL FORCEPS AND METHOD OF MANUFACTURING THEREOF

A method of manufacturing a forceps includes providing first and second jaw members and depositing an electrically-conductive tissue sealing plate atop each jaw member via vapor deposition. The jaw members are then coupled to one another to permit movement of one (or both) of the jaw members relative to the other between a spaced-apart position and an approximated position for grasping tissue between the tissue sealing plates thereof.

ELECTROSURGICAL INSTRUMENT WITH FLEXIBLE WIRING ASSEMBLIES

An electrosurgical instrument comprising a housing, a shaft extending from the housing, an end effector extending from the shaft, an articulation joint rotatably connecting the end effector to the shaft, and a wiring circuit is disclosed. The housing comprises a printed control board. The wiring circuit extends from the printed control board through the shaft and into the end effector. The wiring circuit is configured to monitor a function of the end effector and communicate the monitored function to the printed control board. The wiring circuit comprises a proximal rigid portion fixed to the shaft, a distal rigid portion fixed to the end effector, and an intermediate portion extending from the proximal rigid portion to the distal rigid portion. The intermediate portion comprises a resilient portion and a stretchable portion. 1. An electrosurgical instrument , comprising:a housing comprising a printed control board;a shaft extending from the housing;an end effector extending from the shaft;an articulation joint rotatably connecting the end effector to the shaft; and a proximal rigid portion fixed to the shaft;', 'a distal rigid portion fixed to the end effector, and', a resilient portion; and', 'a stretchable portion., 'an intermediate portion extending from the proximal rigid portion to the distal rigid portion, wherein the intermediate portion comprises], 'a wiring circuit extending from the printed control board through the shaft and into the end effector, wherein the wiring circuit is configured to monitor a function of the end effector and communicate the monitored function to the printed control board, and wherein the wiring circuit comprises2. The electrosurgical instrument of claim 1 , wherein the resilient portion comprises a first substrate and the stretchable portion comprises a second substrate claim 1 , wherein the first substrate and the second substrate are different.3. The electrosurgical instrument of claim 1 , wherein the stretchable portion ...

Electrosurgical blade with minimally exposed edge, alternative to coated blade

A cutting element for an electrosurgical device. The cutting element includes an elongate non-conductive body having a first face opposite a second face, the first face and the second face defining an edge there between. A conductive element is disposed only along the edge, the conductive element being configured to cut tissue with monopolar radiofrequency energy.

CATHETER APPARATUSES FOR MODULATION OF NERVES IN COMMUNICATION WITH PULMONARY SYSTEM AND ASSOCIATED SYSTEMS AND METHODS

Devices and systems for the selective positioning of an intravascular neuromodulation device are disclosed herein. Such systems can include, for example, an elongated shaft and a therapeutic assembly carried by a distal portion of the elongated shaft. The therapeutic assembly is configured for delivery within a blood vessel. The therapeutic assembly can include one or more energy delivery elements configured to deliver therapeutic energy to nerves proximate a vessel wall. 1. A catheter apparatus , comprising:an elongated shaft having a proximal portion and a distal portion, wherein the distal portion of the shaft is configured for intravascular delivery to a body vessel of a human patient;an energy delivery element positioned along the distal portion of the shaft; anda plurality of deflectable members spaced apart about a circumference of the distal portion of the shaft, wherein each of the deflectable members is configured to transform from a low-profile state to a deployed state, thereby bending the distal portion and placing the energy delivery element in apposition with a wall of the body vessel.2. The catheter apparatus of wherein the distal portion of the elongated shaft is sized and configured for intravascular delivery into the pulmonary artery.3. The catheter apparatus of wherein the each of the deflectable members comprises a bimetallic strip including a first material having a first coefficient of thermal expansion (CTE) positioned adjacent a second material having a second CTE that is different than the first CTE.4. The catheter apparatus of wherein each of the deflectable members comprises a bimetallic strip including a piezoelectric material and a substrate material coupled to one another along their lengths claim 1 , wherein the piezoelectric material has a first CTE and the substrate material has a second CTE that is different than the first CTE.5. The catheter apparatus of wherein the therapeutic assembly comprises four deflectable members claim 1 , ...

CONTROLLED OPTICAL PROPERTIES VITREOUS ENAMEL COMPOSITION FOR ELECTROSURGICAL TOOL

A vitreous enamel coating for an electrosurgical metal cutting blade, in which incident light striking the vitreous enamel coating is diffusely reflected or absorbed, and the vitreous enamel coating exhibits a 60° gloss value less than 100 gloss units as measured according to ASTM D523-14, Standard Test Method for Specular Gloss. The coating reduces glare from light sources such as a nearby plasma-mediated discharge, operating theater lights or lights provided on an electrosurgery apparatus. The coating may also lessen interference with markers, sensors or other instruments designed to measure light emitted by or passing through nearby tissue such as by transillumination. 1. An article comprising:(a) an electrosurgical cutting blade comprising a metal electrode, and(b) a visible vitreous enamel coating on at least a portion of the metal electrode, wherein incident light striking the vitreous enamel coating is diffusely reflected or absorbed, and the vitreous enamel coating exhibits a 60° gloss value less than 100 gloss units as measured according to ASTM D523-14, Standard Test Method for Specular Gloss.2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. The article of claim 1 , wherein the vitreous enamel coating is sufficiently diffusely reflective or absorptive so that the underlying metal electrode is not visible through the coating under typical indoor illumination.9. The article of claim 1 , wherein the vitreous enamel coating is sufficiently diffusely reflective or absorptive so that a specular second surface reflection from the underlying metal electrode is not visible through the coating during plasma operation.10. The article of claim 1 , wherein the vitreous enamel coating diffusely reflects or absorbs light in a visible light wavelength band of interest.11. The article of claim 1 , wherein the vitreous enamel coating diffusely reflects or absorbs light in an infrared light wavelength band of interest.12. The article of claim 1 ...

NON-STICK BIPOLAR FORCEPS

Disposable, bipolar electrosurgical forceps are designed to prevent the sticking of body tissue to the tips of the forceps and include a pair of electrode arms having lengths with opposite proximal and distal ends, with thin layers of biocompatible metal on the forceps arm distal ends and bipolar electrical conductors permanently secured to the forceps arm proximal ends. 1. A tissue-sticking resistant forceps comprising:first and second elongate pincers, each pincer having an intermediate body portion that is shaped and dimensioned to be held in a single hand, and each pincer having a proximal end portion and a distal portion at opposite ends of the intermediate body portion, the pincer distal end portions extending from the intermediate body portions to pointed end tips of the pincers, the first and second pincers consisting of an aluminum alloy;an electrically conductive cord permanently connected to the proximal end portion of at least one pincer, the cord having a flexible length that extends from the at least one pincer to an electrical connector from the at least one pincer; anda layer of biocompatible metal on each pincer tip, the layer of biocompatible metal having a thickness being not more than 0.010 inches.2. The tissue-sticking resistant forceps of claim 1 , wherein the layer of biocompatible metal comprises silver.3. The tissue-sticking resistant forceps of claim 2 , wherein the layer of biocompatible metal is pure silver.4. The tissue-sticking resistant forceps of claim 1 , wherein the layer of biocompatible metal comprises gold.5. The tissue-sticking resistant forceps of claim 1 , further comprising electrically insulating coatings over the intermediate body portions of the first and second pincers.6. The tissue-sticking resistant forceps of claim 1 , wherein the thickness of the layer of biocompatible metal on each pincer tip being in a range of 0.0005 of an inch to 0.005 of an inch.7. The tissue-sticking resistant forceps of claim 1 , wherein the ...

METHOD FOR PRODUCING A FLAT ELECTRODE

A method produces a flat electrode of a high-frequency surgical instrument, which has in at least one layer height of metal and in at least one other layer height of ceramic, wherein the flat electrode is produced in the form of a green body and then sintered. 1. Method for producing a flat electrode of a high-frequency surgical instrument , which consists in at least one layer height of metal and in at least one other layer height of ceramic , wherein the flat electrode is produced in the form of a green body and then sintered.2. Method according to claim 1 , wherein the green body is produced from several films which are applied one on top of the other in the form of green films.3. Method according to claim 2 , wherein films made of different materials that alternate one on top of the other are applied.4. Method according to claim 1 , wherein the green body is formed from a mixture of metal and ceramic in which the mixing ratio changes continuously or stepwise with the layer height.5. Method according to claim 1 , wherein the green body is brought to the desired shape before the sintering.6. Method according to claim 2 , wherein the green body is brought to the desired shape before the sintering.7. Method according to claim 3 , wherein the green body is brought to the desired shape before the sintering.8. Method according to claim 4 , wherein the green body is brought to the desired shape before the sintering. The invention relates to a method for producing a flat electrode according to the preamble of Claim .High-frequency surgical instruments according to the preamble are known, for example, from U.S. Pat. No. 6,447,511 B1. FIGS. 12 and 13 of this published document show bipolar scissors for endoscopic purposes with two flat electrodes designed in the form of cutting blades that consist of metal, preferably ceramic, in different layer heights. The flat electrodes represented each have a central layer made of insulating material as well as an upper and a lower ...

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.

Methods and devices for puncturing tissue

Methods and devices are disclosed for puncturing tissue, comprising a puncture device for puncturing tissue and a supporting member for supporting the puncture device. The puncture device is capable of being insertable within the supporting member and being selectively usable in co-operation therewith during a portion of a procedure for puncturing tissue and wherein the puncture device is usable independently therefrom during another portion of the procedure. The puncture device comprises visual or tactile markers for determining the relative positioning between puncture device and supporting member.

MEDICAL LASER FIBER

One described aspect is an optical fiber comprising: a fiber core that extends along a fiber axis, is configured to transmit a laser energy along the fiber axis, and terminates at a distal end; a first cladding that extends along the fiber axis, is adjacent to the fiber core, and terminates at a distal end; a coating that extends along the fiber axis and terminates at a distal end, wherein the coating is a gold coating; a second cladding that surrounds a portion of the gold coating along the fiber axis, and terminates at a distal end; an outer jacket that extends along the fiber axis and terminates at a distal end; and a fiber tip. Associated laser systems are also disclosed. 120-. (canceled)21. A laser delivery device comprising:a fiber that extends along a fiber axis, wherein the fiber is configured to transmit a laser energy along the fiber axis, and terminates at a distal end of the fiber;a gold coating that extends along the fiber axis and terminates at a distal end of the coating, wherein the gold coating is directly applied on the fiber;an outer jacket that extends along the fiber axis and terminates at a distal end of the outer jacket;a fiber tip; anda liner surrounding the outer jacket.22. The laser delivery device of claim 21 , wherein a diameter of the gold coating is 1% to 3% greater than a diameter of the fiber.23. The laser delivery device of claim 21 , wherein the gold coating includes a thickness of less than 3 μm.24. The laser delivery device of claim 23 , wherein the thickness is between 1-3 μm.25. The laser delivery device of claim 21 , where the fiber comprises a first cladding and a core.26. The laser delivery device of claim 25 , wherein an outer diameter of the outer jacket is greater than an outer diameter of the gold coating claim 25 , the outer diameter of the gold coating is greater than the outer diameter of the first cladding claim 25 , and the outer diameter of the first cladding is greater than the outer diameter of the fiber core.27. ...

Electrosurgical apparatus for delivering rf and/or microwave energy into biological tissue

An electrosurgical instrument for delivering electromagnetic energy to biological tissue, the instrument comprising an active tip having an electrically conductive protective hull mounted on an underside thereof. The hull has a smoothly contoured convex undersurface, and is formed as a shaped piece of electrically conductive bio-compatible material having a low coefficient of friction with biological tissue (e.g. stainless steel) which has the dual function of (i) physically protecting tissue that lies underneath the active tip, and (ii) providing an electrical connection between a coaxial feed line and the active tip.

Forceps with intentionally misaligned pin

A forceps having at least a first jaw with a longitudinal axis is disclosed. The first jaw can include a body portion, a first flange, a second flange and a cam pin. The first flange can define a first cam slot with a longitudinal extent along the longitudinal axis. The second flange can be spaced from the first flange a distance transverse to the longitudinal axis of the first jaw and can have a second cam slot. The cam pin, with a longitudinal axis, can be moveably secured within the first cam slot and the second cam slot. A diameter of the cam pin can be less than a width between a first longitudinal edge that defines a first side of each of the first cam slot and the second cam slot and a second longitudinal edge that defines a second opposing side of each of the first cam slot and the second cam slot so that the cam pin is moveably received by both the first cam slot and the second cam slot. With the first jaw pivoted to at least a first position, the cam pin and first flange can be configured such that the first longitudinal edge is contacted by the cam pin but the second longitudinal edge is spaced from the cam pin. The cam pin and second flange can be configured such that the first longitudinal edge is spaced from the cam pin but the second longitudinal edge is contacted by the cam pin.

DEVICES AND METHODS FOR TISSUE VAPORIZATION

In accordance with some embodiments of the invention there is provided a device for vaporizing one or more holes in tissue, comprising an array of vaporizing elements and a heating element configured to heat the vaporizing elements, wherein a geometry of at least a portion of the vaporizing elements is configured to prevent excessive penetration of other vaporizing elements into the tissue. In some embodiments, the vaporizing elements are heated to a temperature ranging between 300-600 degrees Celsius. 12-. (canceled)3. The device according to claim 52 , wherein a tip of at least a portion of said protruding tips is truncated.4. The device according to claim 3 , wherein said portion of said protruding tips with said truncated tip is shorter than at least one other protruding tip.5. The device according to claim 52 , wherein at least one protruding tip comprises a sharp distal tip.6. The device according to claim 52 , wherein said protruding tips are mounted on said heat conducting sheet.7. (canceled)8. The device according to claim 52 , wherein said array comprises protruding tips at a spatial distribution ranging between 2 and 100 protruding tips per square centimeter.9. (canceled)10. The device according to claim 52 , wherein said device comprises protruding tips in a shape selected from a group consisting of:a pyramidal shape; anda conical shape.1114-. (canceled)15. The device according to claim 51 , wherein a said biocompatible coating of said second material blocks diffusion of said first material when said sheet is heated to a temperature of at least 400 degrees Celcius.16. The device according to claim 51 , wherein one or more of said first material claim 51 , said second material claim 51 , and an additional material coating said second material IR emissivity towards the tissue.1729-. (canceled)30. A method for vaporization of tissue in preparation for transferral of medication through the tissue claim 51 , comprising:heating a device comprising a heat ...

Electrosurgery blades with argon beam capability

An electrode assembly with an electrosurgery blade having argon beam capabilities. The electrode assembly includes an electrosurgery blade, which may be monopolar, bipolar, or bipolar with monopolar capability, and a non-conductive housing for providing an ionized argon gas.

CATHETER SPINE ASSEMBLY WITH CLOSELY-SPACED BIPOLE MICROELECTRODES

An electrophysiologic catheter with a distal electrode assembly carrying very closely-spaced bipole microelectrodes on a plurality of divergent spines that can flexibly spread over tissue surface area minimized detection of undesirable noise, including far-field signals. Each spine has a flexible microelectrode panel having a substrate, at least one pair of microelectrodes, a trace for each microelectrode, and a soldering pad. Adjacent microelectrodes of a bipole pair are separated by a space gap distance ranging between about 50-300 microns. Each microelectrode may have a width of about 200 or 300 microns. 1. An electrophysiological catheter comprising:an elongated body; a plurality of spines, each of the spines having a free distal end and a proximal end extending from a distal end of the elongated body; and', [ a longitudinal portion configured to extend generally along a length of its respective spine,', 'at least one distal lateral portion generally traversing the longitudinal portion, and', 'a proximal base portion proximal of the longitudinal portion,, 'a substrate conforming to the generally planar surface of its respective spine, the substrate comprising, 'at least one pair of microelectrodes on the at least one distal lateral portion of the substrate,', 'a soldering pad for each of the microelectrodes, each of the soldering pads being located on the proximal base portion of the substrate, and', 'a trace for each of the microelectrodes, each of the traces electrically coupling a respective one of the microelectrodes on the at least one distal lateral portion of the substrate and a respective one of the soldering pads on the proximal base portion of the substrate., 'a flexible panel on at least one of the spines, the flexible panel comprising], 'a distal electrode assembly comprising2. The catheter of claim 1 , wherein the microelectrodes of the at least one pair of microelectrodes are separated by a space gap distance ranging between about 50-300 microns.3. ...

INSERT MOLDED PRODUCT, ELECTRICAL SIGNAL CONNECTOR, ENDOSCOPE, AND INSERT MOLDING METHOD

An insert molded product in which a metal base member and a resin are bonded together includes a ground layer; a noble metal layer formed of a noble metal; a compound layer formed of a compound containing silicon (Si) and oxygen (O); and a mixture layer where the compound and the resin are mixed together, wherein the ground layer, the noble metal layer, the compound layer, and the mixture layer are formed in this order on the metal base member, and wherein nickel (Ni) is included in both the compound layer and the mixture layer.

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 ...

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

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

CATHETER APPARATUSES FOR MODULATION OF NERVES IN COMMUNICATION WITH THE PULMONARY SYSTEM AND ASSOCIATED SYSTEMS AND METHODS

Devices and systems for the selective positioning of an intravascular neuromodulation device are disclosed herein. Such systems can include, for example, an elongated shaft and a therapeutic assembly carried by a distal portion of the elongated shaft. The therapeutic assembly is configured for delivery within a blood vessel. The therapeutic assembly can include a pre-formed shape and can be transformable between a substantially straight delivery configuration; and a treatment configuration having the pre-formed helical shape to position the therapeutic assembly in stable contact with a wall of the body vessel. The therapeutic assembly can also include a mechanical decoupler operably connected to the therapeutic assembly that is configured to absorb at least a portion of a force exerted on the therapeutic assembly by the shaft so that the therapeutic assembly maintains a generally stationary position relative to the target site. 121-. (canceled)22. A treatment device , comprising:a shaft including a proximal portion and a distal portion, wherein the shaft is configured to intravascularly locate the distal portion at a treatment site within a pulmonary blood vessel of a human patient;a balloon at the distal portion of the shaft;a lumen extending distally from a proximal portion of the shaft to an output port at the distal portion, wherein the output port is positioned along a portion of the shaft within the balloon, and wherein the output port is configured to deliver a cooling agent to an interior portion of the balloon;a first electrode positioned on the outer surface of the balloon and extending about at least a portion of the circumference of the balloon;a second electrode positioned on the outer surface of the balloon and extending about at least a portion of the circumference of the balloon, wherein the first electrode is spaced apart from and out of contact with the second electrode along the balloon; deliver therapeutic neuromodulation to nerves in ...

CABLE FOR CONVEYING RADIOFREQUENCY AND/OR MICROWAVE FREQUENCY ENERGY TO AN ELECTROSURGICAL INSTRUMENT

Embodiments of the invention provide a hollow cable for transmitting radiofrequency and/or microwave frequency energy to an electrosurgical instrument, wherein the hollow cable is provided with electrical connectors for forming a bipolar electrical connection with an electrosurgical instrument that fits within, e.g. slides relative to, the hollow cable. The connectors can be conductive protrusions extending in an axial direction on opposite sides of the cable. The protrusions can be tabs, fins, rods, pins, or wires. The protrusions can be strips which engage corresponding terminals on the instrument. The transmission line structure of the invention can have a greater diameter than conventional coaxial cables, which can minimize loss whilst still providing access for control wires and/or fluid to reach a surgical instrument. The cable can be used with multiple instruments. 1. A cable for conveying radiofrequency and/or microwave frequency energy to an electrosurgical instrument at a first end of the cable , the cable comprising:a hollow tube comprising inner and outer electrically conductive layers separated by dielectric material to form a transmission line, the hollow tube having a central channel extending along its length;a first terminal at the first end of the cable, the first terminal being arranged to form an electrical connection between the inner conductive layer and a first cooperating terminal of the electrosurgical instrument; anda second terminal at the first end of the cable, the second terminal being arranged to form an electrical connection between the outer conductive layer and a second cooperating terminal of the electrosurgical instrument,wherein the first terminal comprises a first electrically conductive protrusion extending in an axial direction from the first end of the cable and electrically connected to the inner conductive layer; and/orwherein the second terminal comprises a second electrically conductive protrusion extending in an axial ...

IMPLANTABLE DEVICE FOR OPTICALLY STIMULATING THE BRAIN COMPRISING A MULTI-CHANNEL CATHETER

An implantable device for optically stimulating a brain of a human being or animal, including: a multi-channel biocompatible catheter including a plurality of channels extending substantially parallel to each other relative to a longitudinal axis of the multi-channel catheter; a light guide, extending into one channel, for optically stimulating the brain, the multi-channel catheter acting as a sheath totally enveloping the light guide; a functional element, extending into another channel, to measure light injected into a surrounding medium at a distal end of the light guide and/or an element acting on the shape of the multi-channel catheter. 119-. (canceled)20: An implantable device for optically stimulating a brain of a human being or animal , comprising:a biocompatible multi-channel catheter, comprising a plurality of channels extending in parallel to each other relative to a longitudinal axis of the multi-channel catheter, the multi-channel catheter including a proximal end and a distal end;a light guide, extending into a channel of the multi-channel catheter, for optically stimulating the brain, including a proximal end for receiving light emitted by a light source and a distal end for delivering the light inside the brain, the multi-channel catheter acting as a sheath for totally wrapping the light guide;a functional element, extending into another channel of the multi-channel catheter, for measuring light injected into a surrounding medium at the distal end of the light guide, and/or an element acting on a form of the multi-channel catheter;the distal end of the multi-channel catheter including a light scattering element including a fluorophore for fluorescence monitoring.21: The device according to claim 20 , wherein the distal end of the multi-channel catheter is of an oblong shape.22: The device according to claim 20 , wherein the light scattering element is located at the distal end of the light guide inside the channel into which the light guide extends. ...

GERD treatment apparatus and method

An apparatus to treat a sphincter includes an energy delivery device support member. An energy delivery device is coupled to the energy delivery support member. The energy delivery device has a configuration that controllably produces lesions of a sufficient size and number in the sphincter to create a selectable tightening of the sphincter.

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.

Multi-function bi-polar forceps

An end effector is disclosed. The end effector includes a first jaw member. The first jaw member comprises a first electrode. The first jaw member defines a first aperture at a distal end. The end effector includes a second jaw member. The second jaw member comprises a second electrode. The second jaw member defines a second aperture at a distal end. The second jaw member is operatively coupled to the first jaw member. The first and second apertures are configured to define a single aperture when the first and second jaw members are in a closed position. The first and second electrodes are configured to deliver energy.

Electrosurgical (RF) medical instruments for cutting and coagulating tissue

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

Catheter assembly, catheter and multi-port introducer for use therewith

A assembly for use in performing a medical procedure within a region in a body of a patient having a vessel therein comprising a multi-port introducer adapted to be inserted into a vessel of the patient. The multi-port introducer includes an elongate body having proximal and distal extremities and has spaced-apart lumens extending from the proximal extremity toward the distal extremity. The elongate tubular body has ports therein at the proximal extremity in communication with the lumens and openings in the distal extremity in communication with the lumens. The elongate tubular body has a length so that it can extend from the exterior of the body to said region in the body. A plurality of catheters are provided. Each of the catheters is slidably disposed in a separate lumen in the multi-port introducer and has a distal extremity adapted to be disposed in the vessel of the patient.

ELECTRODE ARRANGEMENT FOR CATHETER

Secondary conduction path detector

Accessory pathway detecting/cauterizing apparatus

An accessory pathway detecting apparatus measures action potentials from first and second electrode leads, and outputs the obtained action potentials, as potential maps, to a CRT or a printer such that the action potentials can be displayed in the form of a list. An ablation catheter is inserted and located at a preexcitation portion obtained from the display, and the impedance between each of the electrodes of the first and second electrode leads and the electrode of the ablation catheter is measured by an impedance measuring circuit. A point where the lowest impedance is measured is regarded as an accessory pathway portion. The ablation catheter is fixed at this point.

Electrode array catheter

An electrode array catheter, typically used for mapping, pacing and ablation, includes a flexible delivery sheath (36, 64) and an electrode assembly (2, 62) slidably mounted within the delivery sheath for movement between retracted and deployed positions. The electrode assembly includes an ablation electrode (10, 90) and a plurality of mapping electrodes (26, 114) which are grouped in pairs and naturally assume a three-dimensional array when deployed. The electrodes are distributed to contact a portion of the chamber wall (130) surrounding the target site. The electrode assembly tip has a coiled conical shape (24) in one embodiment and has a number of axially extending, radially outwardly curved arms (118) in another embodiment. A flat flexible circuit (110), having axially extending electrode traces (112) connecting proximal terminals (108) to distal electrode pads (114), is slit (116) axially and is preformed and to create the curved arms.

Catheter assembly, catheter and multi-port introducer for use therewith

A assembly for use in performing a medical procedure within a region in a body of a patient having a vessel therein comprising a multi-port introducer adapted to be inserted into a vessel of the patient. The multi-port introducer includes an elongate body having proximal and distal extremities and has spaced-apart lumens extending from the proximal extremity toward the distal extremity. The elongate tubular body has ports therein at the proximal extremity in communication with the lumens and openings in the distal extremity in communication with the lumens. The elongate tubular body has a length so that it can extend from the exterior of the body to said region in the body. A plurality of catheters is provided. Each of the catheters is slidably disposed in a separate lumen in the multi-port introducer and has a distal extremity adapted to be disposed in the vessel of the patient.

Systems for locating and guiding operative elements within interior body regions

Systems and methods for locating an operative element within an interior body space use a locating probe, which includes at least one transmitting element to transmit an electric waveform output within at least a portion of the space. The systems and methods also use a sensing element, which is adapted to be carried by the operative element to sense a local electric waveform within the space. A processing element coupled to the sensing element generates a processed output that locates the sensing element relative to the locating probe based, at least in part, upon a differential comparison of the waveform output and the sensed local waveform.

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.

Method and apparatus for controlling power delivered by electrosurgical probe

2극 전기 수술 기기로부터 생체 조직으로 전달되는 RF 전력을 제어하는 방법. 상기 방법은, 상기 2극 전기 수술 기기에 인가되는 전압에 대해 최대 전압 한계를 설정하는 단계; 조직의 저항을 계산하는 단계로서, 상기 계산하는 단계는 상기 RF 채널과 연관된 임피던스에 대한 정정을 포함하는, 상기 계산하는 단계; 상기 계산된 조직의 저항과 미리 결정된 전력 소비 타깃으로부터 대상 조직의 전류 한계를 결정하는 단계; 및 상기 결정된 대상 조직의 전류 한계에 기초하여 상기 전류 한계를 동적으로 조절하는 단계에 의해 RF 파형의 프로파일을 제어하는 단계를 포함한다. 이 제어 방법은 상기 프로브의 첨단으로 전달되는 RF 파형을 제어하는 정확도에 대해 증가된 케이블 길이의 영향을 개선할 수 있다. A method of controlling RF power delivered from a two-pole electrosurgical instrument to a living tissue. The method comprises: setting a maximum voltage limit for the voltage applied to the two-pole electrosurgical instrument; calculating a resistance of the tissue, the calculating comprising a correction for an impedance associated with the RF channel; determining a current limit of a target tissue from the calculated resistance of the tissue and a predetermined power consumption target; and controlling the profile of the RF waveform by dynamically adjusting the current limit based on the determined current limit of the target tissue. This control method may improve the effect of increased cable length on the accuracy of controlling the RF waveform delivered to the tip of the probe.

多功能双极镊子

本发明公开了一种端部执行器。该端部执行器包括第一钳口构件。该第一钳口构件包括第一电极。第一钳口构件限定远侧端部处的第一孔。该端部执行器包括第二钳口构件。该第二钳口构件包括第二电极。第二钳口构件限定远侧端部处的第二孔。第二钳口构件操作地联接到第一钳口构件。当第一钳口构件和第二钳口构件处于闭合位置时，第一孔和第二孔能够限定单个孔。该第一电极和第二电极能够递送能量。

Energy delivery return path apparatus and method

用于使用脉冲场消融能量来消融组织同时将对骨骼肌和神经的刺激最小化并且将对于非目标组织的损害最小化的设备、系统和方法。一些实施例提供了用于将脉冲场消融能量从能量递送设备上的至少一个能量递送电极递送到可被定位在能量递送设备和/或鞘或次级设备上的至少一个能量返回电极而递送到组织的设备、系统和方法。至少一个能量递送电极具有用于施加能量的表面区域，该表面区域小于至少一个能量返回电极用于能量接收或能量返回的表面区域。

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.

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.

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.

Sealing and/or cutting instrument

A sealing and/or cutting instrument having a thermally active surface or element which may be used to seal and then cut tissue, ducts, vessels, etc., apart. The instrument may include a thermally active surface or element comprised of a conductor covered with a ferromagnetic material. The instrument may contact tissue with one or more surfaces comprised of a non-stick material. A sensor in communication with the instrument may be used to monitor a therapeutic procedure and signal when sealing and/or cutting of a tissue is complete.

Medical devices for renal nerve ablation

Medical devices and methods for making and using the same are disclosed. An example medical device may include a medical device for tissue ablation. The medical device may include an elongated shaft having a distal region. An inflatable balloon may be mounted to the distal region. The inflatable balloon may include a body region, a proximal waist, a distal waist, a proximal cone region, and a distal cone region. A skirt may be attached to the inflatable balloon and may extend proximally from the body region. An electrode assembly may be applied directly to an outer surface of the body region of the inflatable balloon. The electrode assembly may include a first conductive member applied directly to the outer surface of the body region of the inflatable balloon and extending proximally therefrom along an outer surface of the skirt.

Electrosurgical cutting instrument

An electrosurgical device having a tubular outer shaft and an inner shaft is disclosed. The tubular outer shaft includes an axis and a distal end region. The distal end region includes a distal-most tip and a cutting edge defining a window in the outer shaft proximal along the axis to the distal-most tip. The inner shaft inner shaft coaxially maintained within the outer shaft such that the inner shaft is movable about the axis with respect to the outer shaft and wherein a portion of the inner shaft is exposed in the window of the outer shaft. A first electrode is disposed on the outer shaft in a region proximal along the axis to the window, and a second electrode is electrically isolated from the first electrode and disposed on the inner shaft. The second electrode is exposed in the window of the outer shaft.

Planar ferromagnetic coated surgical tip and method for making

The present invention relates to surgical dissection tips comprising a substrate comprising beryllium copper and a ferromagnetic layer coating at least a portion of the substrate, and methods of making such surgical dissection tips.

Electrosurgical probe with movable return electrode and methods related thereto

The present invention provides systems, apparatus, and methods for dissecting, resecting, severing, cutting, contracting, coagulating, or otherwise modifying a tissue or organ of a patient. An apparatus of the invention includes an electrosurgical probe configurable between an open configuration and a closed configuration, the probe including an active electrode terminal, a fixed return electrode disposed proximal to the active electrode terminal, and a movable return electrode configured to move linearly with respect to the active electrode terminal between the open configuration and the closed configuration. A method of the present invention comprises clamping a blood vessel between the active electrode terminal and the movable return electrode, coagulating the clamped blood vessel by application of a first high frequency voltage, and severing the coagulated blood vessel by application of a second high frequency voltage.

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.

Dual mode electrosurgical clamping probe and related methods

The present invention provides systems, apparatus and methods for selectively applying electrical energy to body tissue in order to ablate, contract, coagulate, or otherwise modify a target tissue or organ of a patients. An electrosurgical apparatus of the invention includes a shaft having a shaft distal end bearing an active electrode and a return electrode. At least one of the active electrode and the return electrode is moveable such that the shaft distal end can adopt a closed configuration or an open configuration. The apparatus can operate in an ablation mode or a sub-ablation mode. The closed configuration is adapted for clamping and coagulating a target tissue while the apparatus is operating in the sub-ablation mode, while the open configuration is adapted for ablating the target tissue via molecular dissociation of tissue components. A method of the present invention comprises clamping a target tissue or organ with an electrosurgical probe. A first high frequency voltage is applied between the active electrode and the return electrode to effect coagulation of the clamped tissue. Thereafter, a second high frequency voltage is applied to effect localized molecular dissociation of the coagulated tissue. The present invention allows the ablation or modification of the target tissue with minimal or no damage to surrounding, non-target tissue.

A surgical cutting tool

Bipolar/monopolar endometrial ablation device and method

An endometrial ablation device and a method of manufacturing and using the device. An RF current is passed through an endometrium to heat it. An electroconductive expandable member such as a balloon is used as the medium for passing the current and causing the heating of the endometrium. The power delivered from a power source to the balloon is selectively provided to a plurality of electrode area segments on the balloon with each of the segments have a thermistor associated with it whereby temperature is monitored and controlled by a feedback arrangement from the thermistors. The selective application of power is provided on the basis of a switching arrangement which provides either monopolar or bipolar energy to the electrodes. The method of manufacturing the ablation device includes using commercially available stretchable sheet material or providing a mandrel or support base and coating the mandrel or base with an uncured emulsion. The emulsion is then cured to form a bladder-like coating. The coating is thereafter removed from the mandrel or base to form a bladder. Electrons and temperature sensors are formed on or secured to the bladder during or after the curing process and a fluid delivery tube is secured to the bladder for inflating the bladder.

System for controlling tissue ablation using temperature sensors

This invention is a system and associated method to ablate body tissue using multiple emitters (30) of ablating energy. The system and method convey ablating energy individually to each emitter (30) in a sequence of power pulses. The system and method periodically sense the temperature of each emitter (30) and compare the sensed temperatures to a desired temperature established for all emitters (30) to generate a signal individually for each emitter (30) based upon the comparison. The system and method individually vary the power pulse to each emitter (30) based upon the signal for that emitter to maintain the temperatures of all emitters essentially at the desired temperature during tissue ablation.

Surgical method and apparatus for positioning a diagnostic a therapeutic element within the body

A surgical method and apparatus for positioning a diagnostic or therapeutic element within the body. The apparatus may be catheter-based or a probe including a relatively short shaft.

Methods for electrosurgical dermatological treatment

Systems and methods are provided for selectively applying electrical energy to a target location on an external body surface, such as skin tissue removal and/or collagen shrinkage in the epidermis or dermis, e.g., the removal of pigmentations, vascular lesions (e.g., leg veins), scars, tattoos, etc., and for other surgical procedures on the skin, such as tissue rejuvenation, cosmetic surgery, wrinkle removal, hair removal and/or transplant procedures. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals adjacent an external body surface, such as the outer surface of the skin, to remove and/or modify the structure of tissue structures within the skin. Depending on the specific cosmetic procedure, the present invention may be used to: (1) volumetrically remove tissue or hair (i.e., ablate or effect molecular dissociation of the tissue structure); (2) separate a tissue layer from an underlying tissue layer so that the tissue layer can be removed; (3) shrink or contract collagen connective tissue; and/or (4) coagulate blood vessels underlying the surface of the skin.

Noninvasive devices, methods, and systems for shrinking of tissues

The invention provides improved devices, methods, and systems for shrinking of collagenated tissues, particularly for treating urinary incontinence in a noninvasive manner by directing energy to a patient's own support tissues. This energy heats fascia and other collagenated support tissues, causing them to contract. The energy can be applied intermittently, often between a pair of large plate electrodes having cooled flat electrode surfaces, the electrodes optionally being supported by a clamp structure. Such cooled plate electrodes are capable of directing electrical energy through an intermediate tissue and into fascia while the cooled electrode surface prevents injury to the intermediate tissue, particularly where the electrode surfaces are cooled before, during, and after an intermittent heating cycle. Ideally, the plate electrode comprises an electrode array including discrete electrode surface segments so that the current flux can be varied to selectively target the fascia. Alternatively, chilled 'liquid electrodes' may direct current through a selected portion of the bladder while also cooling the bladder wall, an insulating gas can prevent heating of an alternative bladder portion and the adjacent tissues, and/or ultrasound transducers direct energy through an intermediate tissue and into fascia with little or no injury to the intermediate tissue.

Integrated tissue heating and cooling apparatus

Systems and methods integrate the control of an energy generator, to supply energy to an electrode structure to heat a tissue region, and the control of a pumping mechanism, to supply cooling fluid to control tissue temperature in the region.

Graphical user interface for association with an electrode structure deployed in contact with a tissue region

Systems and methods deploy an electrode structure in contact with the tissue region. The electrode structure carries a sensor at a known location on the electrode structure to monitor an operating condition. The systems and methods provide an interface, which generate an idealized image of the electrode structure and an indicator image to represent the monitored operating condition in a spatial position on the idealized image corresponding to the location of the sensor on the electrode structure. The interface displays a view image comprising the idealized image and indicator image. The systems and methods cause the electrode structure to apply energy to heat the tissue region while the view image is displayed on the display screen.

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 50MHz 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.

Electrosurgical cartridge for use in thin profile surgical cutting and stapling instrument

The present disclosure provides a surgical instrument that includes an end effector configured to slideably receive a cutting member. The end effector includes a first and second jaw that is movable relative to the first jaw, a hot zone in a center portion of the end effector, and cool zones in both side portions of the end effector. The first and second jaws define an elongate slot therebetween, to slideably receive the cutting member within the elongate slot to cut tissue located between the first and second jaws. The first jaw includes a first insulative layer and a second insulative layer in the hot zone, a first electrode layer on the first insulative layer, a second electrode layer on the second insulative layer, and heat sink layers in the cool zones. The heat sink layers are configured to cool the tissue in the cool zones to minimize lateral thermal spread.

Electrosurgical instrument

An electrosurgical instrument comprising a support member; at least one electrode mounted on the support, the electrode consisting essentially of a material having a figure of merit of at least 0.15 at room temperature where the figure of merit is the product of the thermal conductivity, the heat capacity and the density of the material in the metric system; and a heat sink in thermal contact with the electrode for removal of heat therefrom. A carbon coating for the electrode is also disclosed where the coating may be formed by different techniques including thermal decomposition of certain carbohydrate containing materials, the latter method providing a porous carbon coating particularly suited for expediting the starting of the instrument. Also disclosed are a number of heat sinks for effecting removal of heat from the electrode. Further disclosed is a monolithic blade made from carbon.

Arthroscopic surgical instruments

An arthroscopic surgical instrument includes a hollow tube with an actuator coupled to its proximal end and an end effector coupled to its distal end. The actuator and the end effector are coupled by a cylindrical push rod which passes through the hollow tube. The push rod includes a frangible link in the form of a flattened portion with strength reducing semicircular side cuts which breaks when a predetermined force is applied to the end effector by the actuator. The end effector includes a stationary jaw and a movable jaw. The stationary jaw is coupled to the distal end of the tube and receives the push rod. The movable jaw is coupled to push rod and is pivotally coupled to the stationary jaw by arcuate engaging surfaces on both jaws. The movable jaw is also provided with a pair of serrated knife-like edges with an inner concave surface between them and the stationary jaw is provided with a receiving opening into which the movable jaw fits when the jaws are in a closed position. The receiving opening is defined by a pair of side walls having an upper taper which terminates in a sharp edge and a distal end wall having a concave inner surface. The concavity of the inner surface of the end wall is defined by a radius from the axis of rotation of the movable jaw. An electrical connection to the hollow tube is provided for supplying the jaws with a cautery current.

Multi-function bi-polar forceps

An end effector is disclosed. The end effector includes a first jaw member. The first jaw member comprises a first electrode. The first jaw member defines a first aperture at a distal end. The end effector includes a second jaw member. The second jaw member comprises a second electrode. The second jaw member defines a second aperture at a distal end. The second jaw member is operatively coupled to the first jaw member. The first and second apertures are configured to define a single aperture when the first and second jaw members are in a closed position. The first and second electrodes are configured to deliver energy.

Electrosurgical (RF) medical instruments for cutting and coagulating tissue

An electrosurgical instrument is disclosed including a pencil-grip handle, a shaft coupled to the pencil-grip handle, and an end effector coupled to the shaft. The end effector includes a body, a source electrode, and one or more return electrodes. The source electrode and the one or more return electrodes are configured to provide a multi-phase bipolar electrosurgical signal to tissue. The one or more return electrodes each comprise a first return electrode and a second return electrode. The electrosurgical instrument further includes an electrosurgical generator coupled to the end effector. The electrosurgical generator is configured to produce the multi-phase bipolar electrosurgical signal including a first phase, a second phase, and a third phase. The electrosurgical generator is coupled to the source electrode, the first return electrode, and the second return electrode. The first phase, the second phase, and the third phase are combined to generate the multi-phase bipolar electrosurgical signal.

Flexible electrosurgical instrument

An end effector of an electrosurgical device may include a first body, a first electrode on the left side of the first body, and a second electrode on the right side of the first body. The first and second electrodes may be configured to receive electrosurgical energy to treat tissue in a target treatment zone. The end effector may also include a fluid aspiration port in fluid communication with a fluid path. The fluid aspiration port may be configured to remove a material from the target treatment zone.

Devices and methods for therapeutic heat treatment

方法和装置(例如用于神经调节)可包括：至少一个热敏电阻器、和具有球囊壁的球囊。在一个或多个实施方式中，该医疗装置构造且布置成将热传递至医疗装置周围环境。在一个或多个实施方式中，至少一个热敏电阻器是被设置在球囊壁上的热敏电阻器阵列的一部分，热敏电阻器阵列包括多个热敏电阻器并可操作地与电流源接合。在一个或多个实施方式中，该装置包括被安装在可扩张球囊的外表上的至少一个柔性电路，其包括括至少一个温度感测装置，该温度感测装置包括至少一个热敏电阻器，其中至少一部分的导电层电性连接到热敏电阻器，条件是没有电极与导电层相联。

Electrode-carrying catheter and method of making

An electrode-carrying catheter has elongate, flexible tubing (12) defining a proximal end (14), a distal end (16), and an electrically insulative outer tubular layer (20) intermediate the ends, the tubing (12) including a flexible core (42) and a flexible non-conductive core-covering layer (44) of plastic about the core (42). A plurality of electrically conductive electrodes (30) is disposed on the outer tubular layer (20). In order to conduct electrical signals between the proximal end (14) and each of the electrodes (30), a longitudinally-spaced plurality of flexible electrically conductive wires (45) are helically wound around and at least partially into the core-covering layer (44). The wound wires (45) define a removed section (47) beneath a segment of each of the electrodes (30) to enable electrical contact between a respective one of the wound wires (45) and a respective one of the electrodes (30). Each electrode (30) is in the form of an electrically conductive flexible flat ribbon (51) for providing electrical communication with a respective one of the wound wires (45). Each ribbon (51) is electrically and physically joined to a respective one of the wound wires (45), and wrapped about and crimped onto the outer tubular layer (20).

Electrosurgical sphincter treatment instrument

An apparatus treats tissue at or near a sphincter. The apparatus has an elongated member having at least one lumen including an inflation lumen, and a basket assembly including a first and a second arm. An inflatable member is coupled to the inflation lumen and has a deployed and a non-deployed state. In the deployed state, the inflatable member expands the basket assembly into contact with tissue. At least one of the first and second arms of the basket assembly has a fluid lumen having an aperture for conveying a fluid from the basket assembly. A source of fluid is coupled to the fluid lumen for conveyance of fluid through the aperture. The fluid can be, e.g., an electrolytic solution, and/or an anti-infection agent, and/or an echogenic media, and/or a steroid, and/or an anesthetic, and/or a medicament, and/or a tissue cooling agent. The source can be a drug delivery device.

Jaw structure for electrosurgical instrument and method of use

An electrosurgical medical device and technique for creating thermal welds in engaged tissue that provides very high compressive forces. In one exemplary embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying first and second surface portions that comprise (i) an electrically conductive material and (ii) a positive temperature coefficient (PTC) material having a selected increased resistance that differs at each selected increased temperature over a targeted treatment range. One type of PTC material is a doped ceramic that can be engineered to exhibit a selected positively sloped temperature-resistance curve over about 37° C. to 100° C. The 70° C. to 100° C. range can bracket a targeted “thermal treatment range” at which tissue welded can be accomplished. The engineered resistance of the PTC matrix at the upper end of the temperature range will terminate current flow through the matrix. In one mode of operation, the engagement plane cause ohmic heating within tissue from Rf energy delivery tissue PTC matrix is heated to exceed the treatment range. Thereafter, energy density in the engaged tissue will be modulated as the conductivity of the second portion hovers within the targeted treatment range to thereby provide optical tissue heating for purposes of tissue welding.

Electrosurgical jaw structure for controlled energy delivery

A working end of a surgical instrument that carries first and second jaws for delivering energy to tissue. In a preferred embodiment, at least one jaw of the working end defines a tissue-engagement plane that contacts the targeted tissue. The cross-section of the engagement plane reveals that it defines a surface conductive portion that overlies a variably resistive matrix of a temperature-sensitive resistive material or a pressure-sensitive resistive material. An interior of the jaw carries a conductive material or electrode that is coupled to an Rf source and controller. In an exemplary embodiment, the variably resistive matrix can comprise a positive temperature coefficient (PTC) material, such as a ceramic, that is engineered to exhibit a dramatically increasing resistance (i.e., several orders of magnitude) above a specific temperature of the material.

Electrosurgical instrument

An embodiment of the invention includes an electrosurgical jaw structure that carries cooperating PTC bodies in both series and parallel circuit components for controlled RF energy application to engaged tissue to effectively weld tissue.

Electrosurgical instrument and method of use

Embodiments of the invention provide an electrosurgical jaw structure comprising first and second opposing jaws one or both of which include 3D variable resistance bodies. The jaw structure can be part of the working end of a surgical instrument. In one embodiment, the jaws can comprise first and second energy-delivery jaw surfaces having first and second 3D variable resistance bodies, with the jaw surface configured to be coupled to an Rf source. The 3D variable resistance bodies can define different temperature-resistance curves. The 3D bodies can be configured to control ohmic heating of tissue by modulating the delivery of Rf energy to tissue. Jaw structures having the 3D bodies can be used to engage and produce high strength tissue welds in targeted tissue including tissue volumes having varying tissue types. Such jaw structures can be configured to simultaneously apply different energy levels to each tissue type within the tissue volume.

Single acting endoscopic instruments

Surgical instruments of the invention are provided with distal ends having a clevis and two discrete investment cast end effectors. One end effector is stationary relative to the clevis, and the other moves or rotates about a transverse pin of the clevis. The rotating end effector includes a first hole through which the transverse pin extends, and the surgical instrument includes an actuation mechanism for causing the rotating end effector to rotate about the transverse pin. The actuation mechanism preferably includes a push rod which is either directly coupled to the proximal end of the rotating end effector or coupled by a staple element. On the other hand, the stationary second end effector, while including a first hole through which the transverse pin extends, has a boss which preferably engages a hole in the clevis and is not coupled to the actuation mechanism. With the clevis and second end effector being coupled at two locations, the second end effector is not free to rotate about the clevis pin, but is held stationary. Other manners of holding the second end effector stationary are to provide the clevis with a boss, and the stationary end effector with a second hole into which the boss extends, or to provide another pin which extends through one arm of the clevis and the stationary end effector only.

Endoscopic end effectors constructed from a combination of conductive and non-conductive materials and useful for selective endoscopic cautery

A non-metallic end effector for use in an endoscopic surgical tool includes a metallic core for strength and for providing a selected electrode surface on the end effector. Selectively conductive end effectors are manufactured by insert molding a plastic or ceramic or other non-conductive body around a metallic or otherwise conductive core. The conductive core is exposed on a selected portion of the working surface of the end effector and extends through the non-conductive body of the end effector for coupling to an electrical source. Selectively conductive end effectors of this type can also be manufactured by coating a cast end effector member with a non-conductive polymer or by metallically plating a non-conductive ceramic end effector member. By extending the conductive core of a selectively conductive end effector member to the pivot hole of the member, electrical coupling can be made through the clevis and tube of an endoscopic instrument. By extending the conductive core to the actuation bore of an end effector member, electrical coupling can be made through the push rod or other actuation member in an endoscopic instrument. Using both techniques, a bipolar selective cautery end effector can be provided on an endoscopic instrument.

Double acting, dual pivot thoracoscopic surgical lung clamps

Lung clamp end effectors for a thoracoscopic surgical instrument are disclosed. The lung clamp end effectors have a base portion, an intermediate portion, and a distal portion. Each base portion has a first through-hole for pivotally engaging a pin of the clevis of the thoracoscopic surgical instrument, and preferably, a second through-hole used in conjunction with connecting links which connect the lung clamp end effector to the push rod. The through-holes on a particular end effector are located on opposite sides of the longitudinal axis of the tool, thereby providing strong clamping action. The lung clamps are further arranged with their distal portions increasing in width to approximately 10 mm as they extend distally. The distal portion also have cut-outs which increase in width as they extend distally. The lung clamp end effectors are at least two inches long from their respective pivot through-holes to their respective distal ends.

Methods for electrosurgical dermatological treatment

Systems and methods are provided for selectively applying electrical energy to a target location on an external body surface, such as skin tissue removal and/or collagen shrinkage in the epidermis or dermis, e.g., the removal of pigmentations, vascular lesions (e.g., leg veins), scars, tattoos, etc., and for other surgical procedures on the skin, such as tissue rejuvenation, cosmetic surgery, wrinkle removal, hair removal and/or transplant procedures. The present invention applies high frequency (RF) electrical energy to one or more electrode terminals adjacent an external body surface, such as the outer surface of the skin, to remove and/or modify the structure of tissue structures within the skin. Depending on the specific cosmetic procedure, the present invention may be used to: (1) volumetrically remove tissue or hair (i.e., ablate or effect molecular dissociation of the tissue structure); (2) separate a tissue layer from an underlying tissue layer so that the tissue layer can be removed; (3) shrink or contract collagen connective tissue; and/or (4) coagulate blood vessels underlying the surface of the skin.

Vascular sealing device with microwave antenna

A device and method are provided for sealing a puncture in a body vessel. The device has an elongated body having a proximal end and a distal end sized to be positioned within a lumen of the body vessel; at least one closure composition precursor lumen within the elongated body having a entrance port adjacent the proximal end of the elongated body through which one or more fluent closure composition precursors can be delivered into the closure composition precursor lumen and an exit port adjacent the distal end of the elongated body through which the one or more fluent closure composition precursors can be delivered outside the vessel adjacent the vessel puncture; and a microwave antenna for delivering microwave energy adjacent the distal end of the elongated body to the fluent closure compound precursor. The microwave antenna according to this embodiment is preferably incorporated onto the elongated body adjacent the body distal end. Alternatively, the device can include a guidewire lumen and a guidewire which includes a microwave antenna.

Bipolar Scissors

A bipolar electrosurgical scissors adapted to electrically cauterize and desiccate organic tissue prior to cutting the tissue in order to reduce or prevent bleeding. The bipolar electrosurgical scissors include a pair of scissor members attached through an electrically insulating point. Each scissor member includes, at a distal end, a shearing surface with a plurality of electrode regions interspersed between a plurality of insulating regions. The insulator regions are offset such that upon closure of the shearing members, the insulation region of one shearing member opposes a corresponding electrode on the other shearing member.

Devices, methods, and systems for shrinking tissues

Devices, systems, and method for treating urinary incontinence generally rely on energy delivered to a patient's own pelvic support tissue to selectively contract or shrink at least a portion of that pelvic support tissue so as to reposition the bladder. The energy will preferably be applied to the endopelvic fascia and/or an arcus tendineus fascia pelvis. The invention provides a variety of devices and methods for applying gentle resistive heating of these and other tissues to cause them to contract without imposing significant injury on the surrounding tissue structures. Alternatively, heat-applying probes are configured to heat tissue structures which comprise or support a patient's urethra. By applying sufficient energy over a predetermined time, the tissue can be raised to a temperature which results in contraction without significant necrosis or other tissue damage. By selectively contracting the support tissues, the bladder neck, sphincter, and other components of the urinary tract responsible for the control of urinary flow can be reconfigured or supported in a manner which reduces urinary leakage.

Method and apparatus for providing a conductive, amorphous non-stick coating

A conductive, non-stick coating is provided using a ceramic material which is conductive, flexible and provides a surface which exhibits the property of lubricity. A room or near room temperature manufacturing process produces a coating of titanium nitride on a substrate, where the coating is amorphous if the substrate is a solid material including plastics, composites, metals, magnets, and ceramics, enabling the substrate to bend without damaging the coating. The coating can also be applied as a conformal coating on a variety of substrate shapes, depending upon the application. The coating is bio-compatible and can be applied to a variety of medical devices.

Electrosurgical jaw structure for controlled energy delivery

A working end of a surgical instrument that carries first and second jaws for delivering energy to tissue. In a preferred embodiment, at least one jaw of the working end defines a tissue-engagement plane that contacts the targeted tissue. The cross-section of the engagement plane reveals that it defines a surface conductive portion that overlies a variably resistive matrix of a temperature-sensitive resistive material or a pressure-sensitive resistive material. An interior of the jaw carries a conductive material or electrode that is coupled to an Rf source and controller. In an exemplary embodiment, the variably resistive matrix can comprise a positive temperature coefficient (PTC) material, such as a ceramic, that is engineered to exhibit a dramatically increasing resistance (i.e., several orders of magnitude) above a specific temperature of the material. In use, the engagement plane will apply active Rf energy to captured tissue until the point in time that the variably resistive matrix is heated to its selected switching range. Thereafter, current flow from the conductive electrode through the engagement surface will be terminated due to the exponential increase in the resistance of variably resistive matrix to provide instant and automatic reduction of Rf energy application. Further, the variably resistive matrix can effectively function as a resistive electrode to thereafter conduct thermal energy to the engaged tissue volume. Thus, the jaw structure can automatically modulate the application of energy to tissue between active Rf heating and passive conductive heating of captured tissue to maintain a target temperature level.

Electrosurgical working end for controlled energy delivery

An electrosurgical working end for automatic modulation of active Rf density in a targeted tissue volume. The working end of the probe of the present invention defines a tissue-engagement surface of an elastomeric material with conductive elements that extend therethrough. In one embodiment, the expansion of the elastomeric material can de-couple the conductive elements from an interior electrode based temperature to modulate current flow. In another embodiment, the elastomeric material can couple and de-couple the conductive elements from an interior electrode based engagement pressure to modulate current flow.

Electrosurgical working end with replaceable cartridges

An electrosurgical medical device and method for creating thermal welds in engaged tissue that carries the electrosurgical components in a disposable cartridge. The instrument also can carry a blade member in a disposable cartridge, thus making the instrument system inexpensive to use. In another embodiment, the electrical leads of the cartridge have a surface coating of a thermochromic material to provide the physician with a visual indicator of operational parameters when applying energy to tissue.

Jaw structure for electrosurgical instrument

An electrosurgical medical device for creating thermal welds in engaged tissue that provides general grasping and dissecting functionality. In an exemplary embodiment, at least one jaw of the instrument defines a tissue engagement plane carrying electrosurgical energy delivery means. The jaw assembly, in one mode of operation, can be used for general grasping and dissecting purposes wherein the jaws close in a non-parallel manner so that the distalmost jaw tip only engage tissue with little movement of the actuator lever in the handle of the instrument. In another mode of operation, the jaw assembly closes close in a parallel manner under very high compression to enable tissue welding.