Bipolar Electrodes Patents (Class 606/48)
-
Patent number: 8147488Abstract: A surgical operating apparatus includes a sheath, a probe body which is inserted through the sheath, and in which ultrasonic vibration is configured to be transmitted, a probe distal end portion which is provided at a distal end portion of the probe body and configured to function as one of bipolar electrodes, and a jaw which is rotatably supported on a distal end portion of the sheath, has an engaging surface which is engaged with the probe distal end portion, and has a second electrode section which is the other of the bipolar electrodes, wherein the jaw includes, at a distal end portion of the engaging surface for engagement with the probe distal end portion, a distal end chip which tolerates a positional displacement relative to the probe distal end portion when the jaw is engaged with the probe distal end portion.Type: GrantFiled: December 28, 2007Date of Patent: April 3, 2012Assignee: Olympus Medical Systems Corp.Inventor: Shinya Masuda
-
Patent number: 8142429Abstract: A high-frequency treatment apparatus includes a treatment high-frequency wave output unit configured to output a treatment high-frequency wave to be applied to a treatment target living tissue, a detection unit for detecting an impedance of the treatment target living tissue, and a control unit configured to control the treatment high-frequency wave output unit on the basis of the result of the detection in the detection unit, the control unit configured to set a treatment frequency of the treatment high-frequency wave to a first treatment frequency in order to treat the living tissue primarily by Joule heat when the impedance of the treatment target living tissue is lower than a threshold value and to set the treatment frequency to a second treatment frequency higher than the first treatment frequency in order to treat the living tissue primarily by high-frequency dielectric heating when the impedance of the treatment target living tissue is higher than the threshold value.Type: GrantFiled: October 3, 2008Date of Patent: March 27, 2012Assignee: Olympus Medical Systems Corp.Inventors: Akinori Kabaya, Takashi Mihori
-
Patent number: 8142430Abstract: An integrated catheter assembly for enabling diverse endoscopic in situ therapies. The assembly includes a catheter with an irrigation fluid lumen, a distal electrode tip portion that acts as a hemostat, and a cutting wire for making incisions in or ablating tissue. A cutting wire hub provides a sealing entrance for a cutting wire. An operator enables the physician to displace the cutting wire between extended and retracted positions. The cutting wire and electrode are electrically isolated. In addition, the catheter assembly may include a planar tip which, when extended outside the distal end of the assembly, assumes a substantially flat unbiased configuration for use. The apparatus of the present invention allows the physician to make incisions in or ablate tissue using electrosurgery, irrigate tissue, and cauterize or coagulate tissue without having to remove the apparatus from the working channel of the endoscope.Type: GrantFiled: December 3, 2009Date of Patent: March 27, 2012Assignee: Boston Scientific Scimed, Inc.Inventors: Russell Francis Durgin, Stephen F. Moreci, William H. Stahley
-
Patent number: 8137344Abstract: A capsularhexis electrode device and corresponding insertion tool are disclosed. A flexible capsulorhexis electrode device comprises an elastomeric ring, first and second electrically conductive traces disposed at a first face of the elastomeric ring and extending concentrically around the elastomeric ring, and first and second electrically conductive connectors. The first and second electrically conductive connectors are electrically connected to the first and second traces, respectively, and are disposed at opposing points across the elastomeric ring from one another. An insertion tool includes first and second stretcher bars with connectors for mating to the electrode device. One of the stretcher bars translates relative to the other to elongate the flexible electrode device for insertion into the anterior chamber of the eye through a small incision.Type: GrantFiled: December 10, 2008Date of Patent: March 20, 2012Assignee: Alcon Research, Ltd.Inventors: Guangyao Jia, Daniel J. Kao, Glenn Sussman
-
Patent number: 8132542Abstract: A device for application on an animal for deterring the animal from wound licking is provided. The device includes a flexible first layer of material and a deterrent composition in contact with the flexible first layer of material. A layer of adhesive is connected with the flexible first layer of material, and a second layer of material is connected with the layer of adhesive opposite the flexible first layer of material. A method for deterring an animal from licking a wound is also provided.Type: GrantFiled: May 12, 2010Date of Patent: March 13, 2012Assignee: Discoveries 180 Inc.Inventors: David A. Stampe, Kay C. Stampe
-
Publication number: 20120059374Abstract: An end effector assembly is provided. The end effector assembly includes a pair of first and second jaw members including respective seal plates adapted to connect to a source of electrosurgical energy. The first and second jaw members operable in a first bipolar mode of operation for treating tissue and a second bipolar mode of operation for separating tissue. A dissector translatable through one of the first and second jaw members is in electrical communication with one of the seal plates of the first and second jaw members and activatable in the second bipolar mode of operation for separating tissue when the first and second jaw members are in one of the open and clamping position and tissue is adjacent thereto.Type: ApplicationFiled: September 7, 2010Publication date: March 8, 2012Inventors: Kristin D. Johnson, Scott F. Alexander
-
Patent number: 8128623Abstract: A portable, thermal cauterizing forceps device for use in surgery. The device incorporates a pair of ceramic heater elements mounted within the tips of the tines of a forceps. The forceps is used to grasp tissue or blood vessels and apply heat to effect cauterization. In the case of the first embodiment of the invention, the forceps instrument incorporates a battery and control electronics. The thermal-forceps is of a self-contained wireless, handheld disposable design. In a second embodiment of the invention, the forceps handpiece is connected to an external power source. Both embodiments of the forceps incorporate set of rapidly heating ceramic heater elements that may be composed of silicon nitride. An LED provides the operator feedback as to the operating level of the heaters and/or battery reserve. Enhancements to the second embodiment include a rechargeable power supply, variable control of the heater temperature, as well as a, digital display of the tip temperature.Type: GrantFiled: October 12, 2009Date of Patent: March 6, 2012Inventor: Garrett D Herzon
-
Patent number: 8123746Abstract: A high-frequency current treatment tool of the present invention includes a pair of clamp pieces which clamps an object, and an electrode which is provided on one of the clamp pieces. Each of the clamp pieces has a clamp face which faces with each other. A first clamp face being one of the clamp faces has a chevron shape protruding toward a second clamp face being another of the clamp faces, and having a ridge portion formed along a longitudinal direction of the first clamp face. The electrode is arranged along the ridge portion.Type: GrantFiled: August 25, 2006Date of Patent: February 28, 2012Assignee: Olympus CorporationInventor: Keita Suzuki
-
Patent number: 8114074Abstract: Endoscopic bipolar scissor blades are formed in a laminate assembly of an electrically conductive electrode, an electrically insulating material, and a metal shearing surface which is electrically insulated and physically spaced from the electrode by the insulating material which is disposed therebetween. In one embodiment, the electrode is a metal blade, while the insulating material is a ceramic which is fixed to the metal blade, and the metal shearing surface which also provides the cutting edge is of a metal material which is fixed to the ceramic. In a second embodiment, the insulating material is a molded ceramic blade, with the electrode and the metal shearing surface layer metalized or otherwise fixed to the ceramic blade. In a third embodiment, the electrode is metalized on a thin layer insulating material which is fixed onto a metallic blade. In a fourth embodiment, metallic shearing and electrode layers are laminated to opposite sides of a fiberglass material.Type: GrantFiled: October 23, 1998Date of Patent: February 14, 2012Assignee: Boston Scientific Miami CorporationInventor: Charles R. Slater
-
Patent number: 8109926Abstract: The present invention provides systems, devices and related methods for applying electric fields for cancerous cell destruction and tissue ablation. A method can include advancing an ablation probe into a patient; deploying a guide from the delivery member along a guide tissue penetration path, deploying an electrode from the guide along an electrode tissue penetration path, and establishing current flow within the target tissue.Type: GrantFiled: September 14, 2007Date of Patent: February 7, 2012Assignees: Lazure Scientific, Inc., Lazure Technologies, LLCInventor: Larry Azure
-
Publication number: 20120029515Abstract: An end effector assembly for use with a bipolar forceps includes a pair of opposing first and second jaw members at least one of which being movable relative to the other to grasp tissue therebetween. Each jaw member includes a pair of spaced apart, electrically conductive tissue sealing surfaces. Each tissue sealing surface is adapted to connect to a source of electrosurgical energy to conduct electrosurgical energy through tissue held therebetween to effect a tissue seal. The forceps also includes an insulator disposed between each pair of electrically conductive sealing surfaces and an electrically conductive cutting element disposed within each insulator and defining a geometrical configuration including a plurality of peaks having a period that is a multiple of an operating frequency of the electrosurgical energy. The cutting elements are adapted to connect to the source of electrosurgical energy to conduct electrosurgical energy through tissue held therebetween to effect a tissue cut.Type: ApplicationFiled: July 28, 2010Publication date: February 2, 2012Inventor: Gary M. Couture
-
Patent number: 8100904Abstract: A treatment tool for an endoscope includes a flexible sheath, with a transparent portion near a distal end thereof, which is inserted into and ejected from a treatment tool insertion channel of the endoscope, a rod-shaped treatment piece arranged into the flexible sheath, an operation wire arranged inside the flexible sheath with a distal end thereof being connected with the rod-shaped treatment piece such that the rod-shaped treatment piece is projected back and forth from the distal end of the flexible sheath by operating the operation wire, and a mobile indicator formed at the rod-shaped treatment piece or a portion of the operation wire near the distal end thereof to move along with movement of the rod-shaped treatment piece and to be visually recognized through the transparent portion of the flexible sheath from an outside of the flexible sheath.Type: GrantFiled: October 31, 2007Date of Patent: January 24, 2012Assignee: Hoya CorporationInventors: Noriyuki Sugita, Kikuo Iwasaka
-
Patent number: 8100894Abstract: A heat pipe for a cautery surgical instrument such as a surgical forceps including a pair of elongate arms joined at an end so as to provide for resilient compressible movement of the arms between a normally open position and a squeezed closed position. The heat pipe provides for conduction of heat away from an electrode tip, and comprises an evaporator portion having a first diameter and a condenser portion spaced away from the evaporator end, and that transitions from the first diameter to at least one smaller diameter section. A socket is disposed within each arm of the forceps and includes a longitudinal blind hole that is sized so as to releasably receive the smaller diameter section of the condenser portion, and a catch for engaging a portion of the arm.Type: GrantFiled: October 21, 2004Date of Patent: January 24, 2012Assignee: Thermal CorporationInventors: David Joseph Mucko, Walter John Bilski
-
Patent number: 8100905Abstract: Embodiments of the invention are directed to a method of excising tissue including injecting fluid into the submucosa to raise targeted tissue. A first electrode is positioned below the targeted tissue within the injected fluid and a second electrode is positioned adjacent a surface of the raised targeted tissue opposite the first electrode. Electrical current is applied between the first and second electrodes and the targeted tissue is excised with the second electrode.Type: GrantFiled: August 2, 2010Date of Patent: January 24, 2012Assignee: Boston Scientific Scimed, Inc.Inventor: Barry Weitzner
-
Patent number: 8083736Abstract: An electrosurgical device is provided which comprises a distal portion having a bipolar electrode configuration and at least one fluid outlet opening. The device further includes a first electrode tip spaced from a second electrode tip with the first electrode tip to serve as a first pole of the bipolar electrode configuration and the second electrode tip to serve as a second pole of the bipolar electrode configuration. The first and second electrode tips are configured to slide over a tissue surface in the presence of a fluid provided from the fluid outlet opening and an electrical current provided from the electrode tips.Type: GrantFiled: September 5, 2002Date of Patent: December 27, 2011Assignee: Salient Surgical Technologies, Inc.Inventors: Michael E. McClurken, Arnold E. Oyola, Jonathan E. Wilson, Christopher W. Maurer, Robert Luzzi, Roger D. Greeley
-
Patent number: 8080009Abstract: The inventive ablation element comprises an elongated cannula having a proximal end and a distal end. The cannula defines an internal lumen within the cannula and a cannula axis. A plurality of conductors contained within the lumen, each of the conductors has a proximal end proximate the proximal end of the cannula, and a distal end proximate the distal end of the cannula. A plurality of ablation stylets each has a proximal end and a distal end, and each coupled at the respective proximal end of the stylet to the distal end of a respective conductor, the stylets comprise a deflectable material, the conductors together with their respective stylets being mounted for axial movement. A trocar point defined proximate the distal end of the cannula.Type: GrantFiled: July 1, 2005Date of Patent: December 20, 2011Assignee: Halt Medical Inc.Inventors: Bruce Lee, Gordon E. Epstein, Adam Hagmann, Jeffrey Cohen
-
Publication number: 20110306973Abstract: An electrosurgical surgical instrument can comprise a handle and an end effector, wherein the end effector can comprise first and second jaws which can be opened and closed to capture tissue therebetween. One or both of the first and second jaws can comprise a plurality of electrodes which can be sequentially activated. The electrodes can be activated in a pre-determined order in connection with a cutting member being advanced through the tissue. In various embodiments, the electrodes can be deactivated in a predetermined order. In certain embodiments, the electrodes can be comprised of a positive temperature coefficient material which can allow the electrodes to be sequentially deactivated.Type: ApplicationFiled: June 10, 2010Publication date: December 15, 2011Applicant: Ethicon Endo-Surgery, Inc.Inventors: John F. Cummings, Andrew T. Beckman, Bradley E. White, Christopher J. Schall, Cory G. Kimball, Al Mirel
-
Patent number: 8075557Abstract: A bipolar electrosurgical scraper device is provided comprising a handle, a blade having a thickness and a beveled distal end with the beveled distal end terminating distally in a scraping edge. The beveled distal end includes a first electrode and a second electrode with the first electrode and the second electrode provided along a width of the blade and spaced apart with respect to the thickness of the blade. The device also comprises a fluid passage at least one fluid outlet in fluid communication with the fluid passage.Type: GrantFiled: October 30, 2007Date of Patent: December 13, 2011Assignee: Salient Surgical Technologies, Inc.Inventors: Christopher W. Maurer, Eric W. Conley, Arnold E. Oyola
-
Patent number: 8062292Abstract: Endoscopic bipolar scissor blades are formed in a laminate assembly of an electrically conductive electrode, an electrically insulating material, and a metal shearing surface which is electrically insulated and physically spaced from the electrode by the insulating material which is disposed therebetween. In one embodiment, the electrode is a metal blade, while the insulating material is a ceramic which is fixed to the metal blade, and the metal shearing surface which also provides the cutting edge is of a metal material which is fixed to the ceramic. In a second embodiment, the insulating material is a molded ceramic blade, with the electrode and the metal shearing surface layer metalized or otherwise fixed to the ceramic blade. In a third embodiment, the electrode is metalized on a thin layer insulating material which is fixed onto a metallic blade. In a fourth embodiment, metallic shearing and electrode layers are laminated to opposite sides of a fiberglass material.Type: GrantFiled: January 18, 2000Date of Patent: November 22, 2011Assignee: Boston Scientific Miami CorporationInventor: Charles R. Slater
-
Patent number: 8052676Abstract: Surgical systems, devices and methods including one or more tissue stimulation elements that, in some instances, may also be used for sensing purposes. Some of the surgical devices also include a tissue coagulation element.Type: GrantFiled: December 2, 2003Date of Patent: November 8, 2011Assignee: Boston Scientific Scimed, Inc.Inventor: David K. Swanson
-
Publication number: 20110257651Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of severed tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B).Type: ApplicationFiled: April 14, 2011Publication date: October 20, 2011Inventor: Andrew Edward Jenkins
-
Patent number: 8038676Abstract: The invention relates to an electrosurgical instrument that comprises two branches joined to one another in an articulated manner, which can be actuated to open or close in a manner corresponding to a clamping, spreading or cutting tool. The instrument further comprises electrode parts at distal ends of the branches, which are used for grasping tissue and passing a coagulation current through the tissue for the purpose of coagulating it and which are electrically insulated from one another, as well as current-supply devices to supply the coagulation current to the electrode parts. In addition, on at least at one electrode part, a cutting section designed as a cutting electrode is provided whereby the electrode part comprises the cutting section and a coagulation section.Type: GrantFiled: April 27, 2005Date of Patent: October 18, 2011Assignee: ERBE Elektromedizin GmbHInventor: Klaus Fischer
-
Publication number: 20110251610Abstract: An electrosurgical handpiece comprising a squeezable handle connected to extend and retract bipolar electrodes from a rigid tubular member. The bipolar electrodes comprise active separable distal ends and connecting links configured such that when the handle is unsqueezed, the active distal ends protrude from the distal end of the first tubular member and are adjacent one another, and when the handle is fully squeezed, the active distal ends are fully extended outwardly from the first tubular member and separate, and when the handle is relaxed but still partially squeezed, the active distal ends come together and touch first at their extreme ends and then touch over a broader area in a position to grasp tissue for receiving electrosurgical currents.Type: ApplicationFiled: June 20, 2011Publication date: October 13, 2011Inventor: Alan G. Ellman
-
Publication number: 20110224669Abstract: A bipolar electrosurgical device includes a handle and an elongated end effector coupled to the handle. The end effector includes an elongated, insulating body having first and second electrodes disposed thereon. The first and second electrodes are separated at the distal end of the insulating body, and a cavity formed in the distal end of the effector is positioned between the first and second electrodes. A fluid-delivery tube is positioned on the body to deliver a conductive fluid to the distal end, adjacent the cavity. During use of the electrosurgical device, delivery of the conductive fluid facilitates formation of an electrical coupling between the electrodes via the tissue being treated.Type: ApplicationFiled: March 11, 2011Publication date: September 15, 2011Applicant: Salient Surgical Technologies, Inc.Inventor: Vaclav O. PODANY
-
Patent number: 8016826Abstract: Assemblies and methods are provided for resecting a portion of tissue to be removed (e.g., unhealthy tissue, such as cancerous tissue) from a portion of the tissue to be retained (e.g., healthy tissue) within a patient is provided. An electrically conductive fluid, such as saline, may be absorbed into a hydrophilic electrode. Electrical energy (e.g., radio frequency (RF) energy) is conveyed to or from the hydrophilic electrode while being moved in proximity to the tissue along a resection line, whereby tissue adjacent to the resection line is coagulated. A resection member, such as a blunt resection member or a resection electrode, which may be on the same device as the hydrophilic electrode, is used to separate the tissue along the resection line to resect the tissue portion to be removed from the tissue portion to be retained.Type: GrantFiled: June 16, 2010Date of Patent: September 13, 2011Assignee: Boston Scientific Scimed, Inc.Inventors: Robert F. Rioux, Paul DiCarlo, Arnold Oyola
-
Patent number: 8012166Abstract: A unique laparoscopy instrument tip and method which allows simultaneous gasping, cauterization, dissection, containment, enclosure and removal of body tissue. Mechanisms for grasping, holding, manipulating, cauterizing, dissecting, encasement in an enclosed cavity and removing the tissue are provided in one implement allowing easy, safe and quick performance of the procedure.Type: GrantFiled: July 6, 2006Date of Patent: September 6, 2011Assignee: Centum Research LLCInventor: Syed Rizvi
-
Patent number: 8012153Abstract: Electrosurgical systems, apparatus, and methods for the controlled removal and treatment of a target tissue. An instrument of the invention includes a rotating member housed longitudinally within a shaft, a tissue removal port disposed at the shaft distal end portion, and an active electrode disposed at the instrument distal end. The active electrode is adapted to electrosurgically remove at least a portion of the target tissue as the rotating member rotates within the shaft. According to alternative embodiments, the active electrode may be disposed on the rotating member or on the shaft.Type: GrantFiled: July 16, 2004Date of Patent: September 6, 2011Assignee: ArthroCare CorporationInventors: Jean Woloszko, Robert H. Dahla
-
Patent number: 8002769Abstract: An electrosurgical system includes a generator for generating radio frequency power, and an electrosurgical instrument including at least three electrodes. The generator includes a radio frequency output stage having at least a pair of RF output lines, and a power supply coupled to the output stage for supplying power to the output stage. A controller is operable to limit the radio frequency output voltage developed across the output lines to at least a first predetermined threshold value to produce a cutting RF waveform, and a second threshold value to produce a coagulating RF waveform. In a combined mode, the controller delivers both cutting and coagulating waveforms by alternating discontinuously between the first and second threshold values to form a blended signal.Type: GrantFiled: August 7, 2007Date of Patent: August 23, 2011Assignee: Gyrus Medical LimitedInventors: Colin C. O. Goble, Anthony Keith Atwell
-
Publication number: 20110202057Abstract: An electrosurgical instrument is provided. The electrosurgical instrument includes an active electrode in close proximity to a return electrode. The active electrode has a first thermal diffusivity. The second electrode has a second thermal diffusivity greater than the first thermal diffusivity. The volume, shape, and thermal diffusivity of the second electrode facilitate the transport of heat.Type: ApplicationFiled: April 28, 2011Publication date: August 18, 2011Inventors: Jonathan O. Thorne, Kevin Morningstar
-
Patent number: 7993332Abstract: An electrosurgical system includes a generator for generating radio frequency power, and an electrosurgical instrument including at least three electrodes and. The generator includes a radio frequency output stage having at least a pair of RF output lines, and a power supply coupled to the output stage for supplying power to the output stage. A controller is operable to limit the radio frequency output voltage developed across the output lines to at least a first predetermined threshold value to produce a cutting RF waveform, and a second threshold value to produce a coagulating RF waveform. In a combined mode, the controller delivers both cutting and coagulating waveforms, either simultaneously or by alternating constantly between the first and second threshold values to form a blended signal.Type: GrantFiled: August 6, 2007Date of Patent: August 9, 2011Assignee: Gyrus Medical LimitedInventors: Colin C. O. Goble, Michael David Newton
-
Publication number: 20110190768Abstract: An electrosurgical device comprising: an electrode having a first portion whose exterior is electrically uninsulated, a second portion whose exterior is electrically insulated, and a third portion; an elongated hollow body having an internal cavity, a front end, a rear end, an external surface, and an electrical wire arranged within the body. The hollow body is configured to reversibly receive the third portion of the electrode at the front end of the body such that electrical contact is made between the electrode and the electrical wire and the second portion of the electrode is not surrounded by the hollow body. A first button is provided for controlling a current flow at a first level to the electrode and is arranged on the external surface. A vacuum tube is slidably engaged by the body and has an inlet generally facing the front end and adjacent the electrode.Type: ApplicationFiled: February 4, 2011Publication date: August 4, 2011Applicant: MEDTEK DEVICES, INC.Inventors: Kyrylo Shvetsov, Anthony L. Lizauckas, III, Gregory J. Pepe, Daniel R. Palmerton, Joseph J. Lynch, Christopher A. Palmerton
-
Patent number: 7988689Abstract: Apparatus and methods for ablating, severing, cutting, shrinking, coagulating, or otherwise modifying a target tissue to be treated. In a method for treating a target tissue, an active electrode of an electrosurgical probe is positioned in at least close proximity to the target tissue in the presence of an electrically conductive fluid. A high frequency voltage is then applied between the active electrode and a return electrode, wherein, the high frequency voltage is sufficient to volumetrically remove (ablate), sever, or modify at least a portion of the target tissue. The probe comprises a multi-lumen shaft having a plurality of internal lumens, and a return electrode coil oriented substantially parallel to the shaft distal end. The active electrode may be in the form of a metal disc, a hook, or an active electrode coil. In the latter embodiment, the active electrode coil is typically arranged substantially orthogonal to the return electrode coil.Type: GrantFiled: September 17, 2007Date of Patent: August 2, 2011Assignee: ArthroCare CorporationInventors: Jean Woloszko, Robert H. Dahla
-
Publication number: 20110184409Abstract: A device for morcellating tissue within a body cavity of a patient comprises a stationary tube (8) having a distal end portion, and a bipolar electrosurgical electrode assembly (13) located at the distal end of the tube. The electrosurgical electrode assembly (13) comprises first and second electrodes (14, 16) separated by an insulation member (15). When an electrosurgical cutting voltage is applied to the electrode assembly (13), and relative movement is initiated between the tube (8) and the tissue, a slug of resected tissue is formed within the tube such that it can be removed from the body cavity of the patient. The bipolar electrosurgical assembly (13) has a first circumferential region (A) and a second circumferential region (B), the first circumferential region (A) being longer than the second circumferential region (B), the bipolar electrosurgical assembly being adapted to cut tissue preferentially in the first circumferential region (A) as compared with the second circumferential region (B).Type: ApplicationFiled: April 15, 2010Publication date: July 28, 2011Inventors: Andrew E. JENKINS, Hollie E. Johnston, Alistair I. Fleming
-
Publication number: 20110178515Abstract: A cartridge assembly to couple an electrosurgical device to treat tissue with an electrosurgical unit includes a cartridge member to operate with a power delivery apparatus of the electrosurgical unit and a fluid delivery apparatus of the electrosurgical unit. An electrosurgical unit includes a power delivery apparatus and a fluid delivery apparatus arranged to operate with a cartridge member to be located in a cartridge receptacle of the electrosurgical unit. An electrosurgical device includes a first electrode spaced alongside the second electrode, with each electrode having a blade shaped member. Each blade shaped member has opposing sides bounded by edges, with the edges having a medial edge and a lateral edge. At least one fluid outlet is adjacent each blade shaped member, and each fluid outlet is in fluid communication with a fluid passage.Type: ApplicationFiled: January 14, 2011Publication date: July 21, 2011Inventors: Eliot F. BLOOM, Brian M. CONLEY, Jonathan J. BARRY, Roger D. GREELEY, Steven G. MILLER, Chad M. GREENLAW
-
Patent number: 7972333Abstract: A high-frequency incision tool for endoscope comprises a sheath inserted through and extracted from a treatment tool guide lumen of an endoscope; an operation unit connected to the rear of the sheath; a pair of electrode blades disposed in parallel and oriented forward at the front position of the sheath, the pair of electrode blades opening forward and closing back through remote manipulation of the operation unit; and a planar portion provided at the tip of at least one of the electrode blades, the planar portion having a projected area, when viewed from the front, larger than the cross sectional areas of the electrode blades at a portion close to their front ends.Type: GrantFiled: May 19, 2006Date of Patent: July 5, 2011Assignee: River Seiko Medical Limited CompanyInventor: Miyuki Nishimura
-
Patent number: 7967819Abstract: A soft bipolar forceps includes a long narrow flexible tube; paired forceps pieces that are formed extending in the axial direction, and are mutually insulated and disposed opposite one another; and a support that is disposed to the distal end of the flexible tube and supports the paired forceps pieces to permit relatively free opening and closing thereof; characterized in that a first electrode is disposed to one of the paired forceps pieces, a second electrode is disposed to the other of the paired forceps pieces opposite the first electrode, and a guide part that extends to permits elastic deformation is disposed to the distal end of the first electrode.Type: GrantFiled: March 30, 2007Date of Patent: June 28, 2011Assignee: Olympus Medical Systems Corp.Inventor: Keita Suzuki
-
Publication number: 20110152861Abstract: In order to so improve a surgical system for connecting body tissue, comprising a surgical instrument having two tool elements movable relative to each other, each of which comprises a high-frequency electrode, the high-frequency electrodes, in an approach position of the tool elements, defining a minimum distance from each other, lying opposite each other and facing each other, that an overstretching of connections of parts of body tissue, in particular, made by a flow of current, is avoided when removing the surgical instrument, it is proposed that the instrument comprise a shaft at the distal end of which at least a first one of the tool elements is arranged or formed, and that a second tool element be adapted to be moved from an operating position, in which it is adapted for movement into the approach position, into a removal position and/or vice versa, a surface area of a perpendicular projection of the second tool element onto a projection plane extending perpendicularly to the shaft direction in the reType: ApplicationFiled: December 15, 2010Publication date: June 23, 2011Applicant: AESCULAP AGInventors: Dieter Weisshaupt, Anton Keller, Christoph Rothweiler
-
Patent number: 7955637Abstract: 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.Type: GrantFiled: May 7, 2010Date of Patent: June 7, 2011Assignee: Innovatech LLCInventor: Bruce Nesbitt
-
Publication number: 20110130757Abstract: An electrosurgical instrument having a distal end and a gripping device which is arranged at the distal end in the longitudinal direction and which includes at least a clamping jaw portion and a coagulation jaw portion. The coagulation jaw portion has a plurality of electrically separated coagulation electrodes which are substantially immovable relative to each other. At least one of the jaw portions is movable from an open position into a closed clamping position, wherein the jaw portions at least portion-wise engage into each other in the clamping position and are of such a configuration that the tissue can be clamped between the jaw portions substantially in a half-wave shape. The coagulation jaw portion has at least two electrode arrangements which are arranged at different sides and have respective electrically separated coagulation electrodes, by means of which the tissue is coagulatable in two substantially mutually separated coagulation regions.Type: ApplicationFiled: June 29, 2009Publication date: June 2, 2011Applicant: CELON AG MEDICAL INSTRUMENTSInventors: Andreas Horlle, Timo Strauss
-
Patent number: 7951148Abstract: An electrosurgical device for use in surgical procedures is disclosed. The electrosurgical device comprises a main body having a proximal end and a distal end. A heat delivery modality is situated and arranged at the distal end of the main body. A sensor arrangement is also situated and arranged at the distal end of the main body. The heat delivery modality provides thermal energy to a tissue being treated while the sensor arrangement is configured to engage and detect a change in dimension of the tissue being treated. Accordingly, the electrosurgical device of the present disclosure allows a surgeon to precisely achieve the desired amount of dimensional change of the tissue being treated.Type: GrantFiled: February 6, 2004Date of Patent: May 31, 2011Assignee: Salient Surgical Technologies, Inc.Inventor: Michael E. McClurken
-
Patent number: 7938826Abstract: A medical device is disclosed that can include a first atrial anchor, a first delivery shaft linked to the first atrial anchor, wherein the first delivery shaft is adapted to move the first atrial anchor, a second atrial anchor, a second delivery shaft linked to the second atrial anchor, wherein the second delivery shaft is adapted to move the second atrial anchor, and a biasing member linking either (i) the first atrial anchor to the first delivery shaft or (ii) the second atrial anchor to the second delivery shaft. The medical device can include an insulation material coupled to one or more of the first or second atrial anchors, or the first or second delivery shaft. A method for treating an internal tissue opening is also disclosed wherein a first and second electrode can be operated between unipolar and bipolar modes to initiate tissue damage, thereby inducing tissue regrowth.Type: GrantFiled: May 29, 2007Date of Patent: May 10, 2011Assignee: Coherex Medical, Inc.Inventors: Clark C. Davis, Scott D. Miles, Daryl R. Edmiston, Brian K. Whisenant, Richard J. Linder, Dewayne C. Fox
-
Patent number: 7935109Abstract: A multifunctional telescopic monopolar/bipolar electrosurgery pencil is disclosed for use with an electrosurgery unit (ESU). The monopolar/bipolar electrosurgery pencil includes a bipolar electrode having an insulator sandwiched between an active electrode and a return electrode wherein the bipolar electrode is connected to a handpiece capable of alternately effectuating cutting and coagulation with the bipolar electrode. The monopolar/bipolar electrosurgery pencil is capable of functioning as both a monopolar and bipolar device and can be used for open and closed laparoscopic and endoscopic procedures. Telescopic means for adjusting the length of the bipolar electrode is also provided as are means for smoke evacuation and suction/irrigation. The multifunctional telescopic monopolar/bipolar device can also be adapted for use with an ESU argon beam coagulator.Type: GrantFiled: August 17, 2006Date of Patent: May 3, 2011Inventor: Ioan Cosmescu
-
Patent number: 7927330Abstract: An electrosurgical apparatus for coagulating tissue used in combination with an endoscope which includes an elongated flexible tube having a plurality of side-ports located therethrough. The tube extends through a working channel of the endoscope and an ionizable gas is supplied to the tube at or near the proximal end of the tube. A diffusing member directs the ionizable gas from the proximal end of the tube through each of the side-ports towards the tissue. An electrode is used for ionizing the gas prior to the gas exiting the side-ports.Type: GrantFiled: March 13, 2008Date of Patent: April 19, 2011Assignee: Covidien AGInventor: Robert C. Platt
-
Patent number: 7922953Abstract: A method of manufacturing a jaw member of an end effector assembly for use with an electrosurgical instrument is disclosed that includes the steps of providing an electrically conductive tissue engaging plate and a jaw support; covering one side of the electrically conductive tissue engaging plate with an electrically insulative, thermally non-degrading coating; placing and securing the electrically conductive tissue engaging plate and the jaw support into a jaw mold; and introducing a liquid substance into the jaw mold and allowing the liquid substance to cure around the electrically conductive tissue engaging plate and the jaw support. Alternatively, the method includes the steps of: providing an electrically conductive tissue engaging plate and a jaw support; covering one side of the electrically conductive tissue engaging plate with an electrically insulative, thermally non-degrading coating; and securing the side of the electrically conductive tissue engaging plate onto the jaw support with an adhesive.Type: GrantFiled: September 28, 2006Date of Patent: April 12, 2011Assignee: Covidien AGInventor: Paul Guerra
-
Publication number: 20110082457Abstract: 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.Type: ApplicationFiled: October 6, 2009Publication date: April 7, 2011Inventors: Duane E. Kerr, Jeffrey R. Townsend, William H. Nau, JR., Terrence R. Young
-
Patent number: 7918851Abstract: An irrigated tip electrode design includes a shell generally surrounding a plug which jointly define a chamber that is fed with fluid by a lumen. The fluid is distributed to the outer surface of the tip electrode through fluid passages. The chamber is advantageously isolated from a region of the tip electrode occupied by electrical and/or electromagnetic components in the tip electrode. Lumens occupied by the these components terminate in blind holes that have no communication with the chamber. A method of fabricating includes providing a shell configured from a rod to provide an open interior cavity, sealing and partially filling the cavity with a plug to form a chamber, then forming fluid passages between the cavity and an outer surface of the tip electrode, and providing a lumen through which fluid can enter the chamber and exit therefrom through the fluid passages.Type: GrantFiled: February 14, 2005Date of Patent: April 5, 2011Assignee: Biosense Webster, Inc.Inventors: Wilton W. Webster, Jr., Mario Solis
-
Patent number: 7918852Abstract: An electrosurgical system preferably used for denervation procedures of nerve tissue has a control unit and a pluggable electrode assembly. The electrode assembly has a preferably disposable cannula and a preservable supply electrode assembly. The cannula has a tubular body that projects axially from a preferably pointed distal end for piercing tissue to a proximal end engaged to a first coupling assembly of the cannula. The body carries a first contact exposed directly to the nerve tissue and connected electrically to a terminal of the first coupling assembly. The supply electrode assembly has a second coupling assembly and a supply electrode that projects axially and removably into a through-bore of the body when the tool is in an operating state. The second coupling assembly carries a terminal that abuts the first coupling assembly when the coupling assemblies are mated.Type: GrantFiled: May 1, 2006Date of Patent: April 5, 2011Assignee: Stryker CorporationInventors: Philip James Tullis, Chamara Gamhewage, Douglas Alan Staunton, Eland Cramlet, Nicole Fickes, Andy Staats
-
Patent number: 7909822Abstract: A debrider apparatus is disclosed. The debrider includes a first tubular member that is adapted to connect to a first potential of an electrosurgical generator. A second tubular member is at least partially disposed within the first tubular member and is adapted to connect to a second potential of the electrosurgical generator. At least one tubular member is selectively movable relative to the other. A first set of teeth is disposed around at least a portion of a distal periphery of the first tubular member. A second set of teeth is disposed around at least a portion of a distal periphery of the second tubular member. At least one switch is operably coupled to at least one of the tubular members and activates movement of one tubular member and supplies respective electrical potentials to the tubular members.Type: GrantFiled: March 1, 2010Date of Patent: March 22, 2011Assignee: TYCO Healthcare Group LPInventor: Paul Guerra
-
Publication number: 20110060334Abstract: A forceps includes a housing including a shaft. The shaft includes an end effector assembly having a pair of curved jaw members. The jaw members include an electrically conductive surface and a curved blade channel having opposing sidewalls. A cutting blade is configured for translation within the blade channel. Proximal portions of a first sidewall include incident angles of less than five degrees that engage the cutting blade and direct the blade towards a specific point of contact on the opposing sidewall of the curved blade channel.Type: ApplicationFiled: September 9, 2009Publication date: March 10, 2011Inventors: Kim V. Brandt, Allan G. Aquino
-
Patent number: 7901403Abstract: A bipolar, plasma-generating electrosurgical apparatus and system wherein the return electrode is enclosed within an electrosurgical shaft, and the active electrode is located on the outside surface of the shaft such that in treating the tissue, the tissue is exposed to plasma generated on the active electrode, but is minimally exposed to electric fields generated between the active and return electrodes. Due to the configuration of the electrodes, electric fields generated between the electrodes are directed away from the target tissue and inwardly towards the return electrode within the shaft, thereby electrical stimulation of neuromuscular structures in the tissue by the electric fields is minimized.Type: GrantFiled: March 2, 2007Date of Patent: March 8, 2011Assignee: ArthroCare CorporationInventors: Jean Woloszko, Thomas Jenkins, George Morrison