Bipolar Electrodes Patents (Class 606/48)
  • Patent number: 10383682
    Abstract: A resectoscope includes a fixed electrode adapted to connect to a first electrical potential, a movable electrode adapted to connect to a second electrical potential and biased transversely towards the fixed electrode, and a spacer coupled to the movable electrode. The movable electrode and the spacer are longitudinally movable relative to the fixed electrode between a first position, wherein the spacer is disposed between the fixed electrode and the movable electrode so as to maintain a spacing between the movable electrode and the fixed electrode against the bias of the movable electrode, and a second position, wherein the spacer is disposed distally of the fixed electrode, allowing the movable electrode to move transversely towards the fixed electrode under the bias of the movable electrode.
    Type: Grant
    Filed: May 25, 2016
    Date of Patent: August 20, 2019
    Assignee: COVIDIEN LP
    Inventors: Joe D. Sartor, John A. Hammerland, III, Jonathan P. Whittle
  • Patent number: 10342610
    Abstract: A surgical device integrating a suction mechanism with a coagulation mechanism is provided for improving lesion creation capabilities. The device comprises an elongate member having an insulative covering attached about means for coagulating soft tissue. Openings through the covering expose regions of the coagulation-causing elements and are coupled to lumens in the elongate member which are routed to a vacuum source. A fluid source to passively transport fluid along the contacted soft tissue surface may be provided in order to push the maximum temperature deeper into tissue.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 9, 2019
    Assignee: AtriCure, Inc.
    Inventors: Sidney D. Fleischman, James G. Whayne, Earl W. Rogers
  • Patent number: 10342601
    Abstract: An end effector assembly for an electrosurgical device includes first and second jaw members movable between spaced-apart and approximated positions for grasping tissue therebetween. The jaw members cooperate to define a tissue grasping area. One or both of the jaw members includes an inner electrode. One or both of the jaw members includes first and second outer electrodes disposed on either side of the inner electrode. The inner and outer electrodes are configured to conduct energy through tissue grasped within the tissue grasping area to seal tissue. The inner and outer electrodes define different configurations such that, upon conduction of energy through tissue grasped within the tissue grasping area, tissue disposed adjacent the outer electrodes is boiled before boiling of tissue disposed adjacent the inner electrodes.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: July 9, 2019
    Assignee: COVIDIEN LP
    Inventors: Craig A. Keller, Guillaume Lessard, Richard M. Ferrell
  • Patent number: 10327842
    Abstract: A medical device includes an elongated sleeve having a longitudinal axis, a proximal end and a distal end. A cutting member having a plurality of sharp edges is formed from a wear-resistant ceramic material is carried at the distal end of the elongated sleeve. A motor drive is coupled to the proximal end of the elongated sleeve to rotate the sleeve at cutting member at high RPMs to cut bone and other hard tissue. An electrode is carried in a distal portion of ceramic cutting member for RF ablation of tissue when the sleeve and cutting member are is a stationary position. In methods of use, (i) the ceramic member can be engaged against bone and then rotated at high speed to cut bone tissue, and (ii) the ceramic member can be held in a stationary (non-rotating) position to engage tissue and RF energy can be delivered to the electrode to create a plasma that ablates tissue.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: June 25, 2019
    Assignee: RELIGN Corporation
    Inventors: Aaron Germain, Kyle Klein, Michael D. Walker, Ben Poser
  • Patent number: 10292761
    Abstract: A medical device includes a sheath extending from a proximal end to a distal end and having a lumen extending therethrough and an end-effector disposed at the distal end of the sheath including a first resection loop configured to resect tissue and a secondary tool including one of a second resection loop and a tissue-vaporizing structure mounted distally to the first resection loop.
    Type: Grant
    Filed: June 11, 2013
    Date of Patent: May 21, 2019
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Kenneth J. Daignault, Kevin Newell, Ronald Ciulla
  • Patent number: 10278721
    Abstract: In various embodiments, a surgical instrument is provided that may comprise an end effector for performing a surgical procedure on tissue, for example. The end effector may comprise a pair of jaws, a closure beam, and a cutting member. The closure beam and the cutting member may be releasably coupled together by an interlocking member such that movement of the cutting member may cause the closure beam to also move relative to the jaws and cause the jaws to close and grip tissue, for example. The interlocking member may then unlock, allowing the cutting member to move through the gripped tissue and relative to the closure beam. Additionally, the cutting member and closure beam may be operated by a single trigger, which may be configured to provide haptic feedback to a user at various stages. Further, the jaws may be electrically energized to deliver energy and/or seal the gripped tissue.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: May 7, 2019
    Assignee: Ethicon LLC
    Inventors: Timothy G. Dietz, Mary E. Mootoo, David A. Witt, Zhifan F. Huang
  • Patent number: 10271892
    Abstract: An electrosurgical system for the treatment of tissue includes an electrosurgical instrument, a source for supplying ionizable gas to said electrosurgical instrument, an electrosurgical generator for supplying high frequency energy to the electrosurgical instrument, and a switch mechanism. The electrosurgical instrument includes one or more conduits and one or more electrodes connected to the electrosurgical generator. The electrosurgical system is movable between at least a first and a second arrangement. The first arrangement is such that one electrode produces a stream of ionized gas exiting one of the conduits, the ionizable gas being capable of the removal of tissue. The second arrangement is such that ionized gas is produced such that it is capable of the coagulation of tissue. The switch mechanism causes the electrosurgical instrument to move between the first and second arrangements.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: April 30, 2019
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Marno Nagtegaal, Wayne Williams, Robert Edward Taylor
  • Patent number: 10194977
    Abstract: An electrosurgical system includes an electrosurgical generator and an electrosurgical instrument with opposing first and second jaw members movable relative to one another between open and closed positions. The first and second jaw member include, respectively, a cutting electrode and at least a first sealing electrode separated therefrom by an insulating member, and at least a second sealing electrode. The generator includes an energy source for producing at least a cutting RF waveform, first, second and third output connections connected to the cutting electrode, first sealing electrode and second sealing electrode, respectively, and a switching circuit rapidly alternating between a first condition to direct the cutting RF waveform between the first and second output connections and hence the cutting and first sealing electrodes, and a second condition to direct the cutting RF waveform between the first and third output connections, and hence the cutting and second sealing electrodes.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: February 5, 2019
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Teo Heng Jimmy Yang
  • Patent number: 10182861
    Abstract: The disclosure describes an electrosurgical device comprising: forceps including: a first and a second working arm; a blade; wherein the device is switchable between: (A) a first configuration where the first and second working arms move towards each other to grasp tissue therebetween; (B) a second configuration where the first and second working arms are secured together to prevent movement of the first and second working arm towards each other; and (C) a third configuration where the first and second working arms are secured together and are prevented from moving towards each other, and the blade is substantially flush with or extends beyond a distal end of the first and second working arms; and wherein the device delivers a bipolar current, and prevents current from flowing from the blade when in the first configuration and the second configuration; and delivers current through the blade when in the third configuration.
    Type: Grant
    Filed: August 19, 2015
    Date of Patent: January 22, 2019
    Assignee: GYRUS ACMI, INC.
    Inventors: Kester J Batchelor, Richard J. Curtis, Ryan J. Windgassen
  • Patent number: 10143511
    Abstract: A living tissue to be treated is brought into contact with a first high-frequency electrode having high thermal conductivity. A substrate on which an electric resistance pattern is formed is longer than the first electrode. The substrate includes an end portion projected from the first high-frequency electrode. A first lead connection portion electrically connected to the electric resistance pattern is formed on the projected end portion. The substrate is pasted to the first electrode by use of a high-thermal-conductivity heat-resistant adhesive sheet. A lead line for applying power to the electric resistance pattern is arranged in the first lead connection portion where it extends in the longitudinal direction of the first electrode and on the side close to the first electrode.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: December 4, 2018
    Assignee: OLYMPUS CORPORATION
    Inventor: Shinji Yasunaga
  • Patent number: 10130415
    Abstract: An electrode array supports multiple electrodes and energizes them so that adjacent electrodes do not have the same polarity. In one embodiment, the electrodes are held about a circumference outside and surrounding a tumor and opposed electrodes are energized in a round robin fashion to promote current flow through the center of the tumor from a variety of angles.
    Type: Grant
    Filed: February 25, 2008
    Date of Patent: November 20, 2018
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: John G. Webster, Dieter Haemmerich, James Arthur Will, David Mahvi, Ann O'Rourke, David James Schutt
  • Patent number: 10098691
    Abstract: A surgical instrument configured to deliver electrical energy to the tissue of a patient is disclosed. The surgical instrument comprises a frame, a first electrode, a second electrode, and a guard movable between a first position and a second position. The surgical instrument further comprises a spring positioned intermediate the guard and the frame. The spring is configured to bias the guard into the first position. When the guard is in the first position, a distal end of the guard is positioned at least flush with distal ends of the first electrode and the second electrode, which prevents current from arcing between the first electrode and the second electrode. When the guard is in the second position, the distal end of the guard is in contact with the tissue, which prevents current from arcing between the first electrode and the second electrode without passing through the tissue.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 16, 2018
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Gary L. Long, David N. Plescia
  • Patent number: 10085796
    Abstract: 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: Grant
    Filed: January 25, 2017
    Date of Patent: October 2, 2018
    Assignee: Medtronic Advanced Energy LLC
    Inventor: Vaclav O. Podany
  • Patent number: 10052068
    Abstract: An apparatus is provided having a proximal end, a distal end, and an outer surface. The apparatus comprises a handle portion located near the proximal end of the apparatus, a supporting arm attached to the proximal end of the apparatus, the supporting arm having a tracking marker, a flexible tip portion located at the distal end of the apparatus, and a plurality of sensors located on the outer surface of the apparatus. The plurality of sensors each provides a signal representing information that is useable for determining deformation of the flexible tip portion. The apparatus may be either a sheath for covering a medical tool or the apparatus may be a medical tool.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: August 21, 2018
    Assignee: Synaptive Medical (Barbados), Inc.
    Inventors: Cameron Piron, Josh Richmond, Gal Sela
  • Patent number: 10022140
    Abstract: A medical device includes an elongated sleeve having a longitudinal axis, a proximal end and a distal end. A cutting member having sharp edges formed from a wear-resistant ceramic material is carried at the distal end of the elongated sleeve. A motor drive is coupled to the proximal end of the elongated sleeve to rotate the sleeve at cutting member at high speed to cut bone and other hard tissue. An electrode is carried in a surface portion of ceramic cutting member for cautery or radiofrequency ablation of tissue when the sleeve and cutting member are is a stationary position.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 17, 2018
    Assignee: RELIGN Corporation
    Inventors: Aaron Germain, Kyle Klein, Michael D. Walker, Salvatore G. Mangano
  • Patent number: 10010367
    Abstract: A steerable electrosurgical electrode is provided. The steerable electrosurgical electrode comprises a handle, a control element, a first tube, a second tube, a third tube, an electrode and an electrical transmission unit. The handle has a flat area therein, the control element has a plurality of positioning planes and pivotally connects to the handle such that one of the positioning planes rotatably abuts against the flat area, the first tube is positioned inside the second tube and pivotally connected to the control element, the third tube is connected to the second and the first tubes through a first and a second links, respectively, and the electrode is configured at the right end of the third tube. A user may manipulate the control element such that it abuts against the flat area at different positioning planes, to move the first tube inside the second tube, which in turns rotates the third tube and the electrode.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: July 3, 2018
    Assignee: COREBIO TECHNOLOGIES CO., LTD.
    Inventors: Chih-Hao Chien, Chih-Hung Li
  • Patent number: 9993292
    Abstract: An apparatus includes a balloon adapted to be placed adjacent a calcified region of a body. The balloon is inflatable with a liquid. The apparatus further includes a shock wave generator within the balloon that produces shock waves that propagate through the liquid for impinging upon the calcified region adjacent the balloon. The shock wave generator includes a plurality of shock wave sources distributed within the balloon.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: June 12, 2018
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventors: John Adams, Thomas G. Goff, Doug Hakala
  • Patent number: 9974600
    Abstract: A bipolar electrosurgical instrument is provided. The bipolar electrosurgical instrument includes first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another. A first conductive lead is adapted to connect to a first electrical potential and a second conductive lead is adapted to connect to a second electrical potential. One of the first and second conductive leads extends through the pivot to connect to a respective jaw member.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: May 22, 2018
    Assignee: COVIDIEN LP
    Inventors: Jeffrey M. Roy, Mark J. Huseman, Ryan C. Artale, Roy Goodwin, David Galbraith
  • Patent number: 9962221
    Abstract: A bipolar forceps includes a mechanical forceps including first and second shafts each having a jaw member extending from a distal end thereof and a handle disposed at a proximal end thereof for effecting movement of the jaw members relative to one another about a pivot. A disposable housing is configured to releasably couple to at least one of the shafts and an electrode assembly is associated with the disposable housing. The electrode assembly includes electrodes releasably coupleable to the jaw members. At least one of the electrodes includes a knife channel configured to receive a knife blade therethrough to cut tissue grasped between the jaw members. A switch is configured to initiate delivery of electrosurgical energy from the source of electrosurgical energy to the electrodes. An actuation mechanism is configured to selectively advance the knife blade through the knife channel to cut tissue.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: May 8, 2018
    Assignee: COVIDIEN LP
    Inventors: Weng-Kai K. Lee, Scott N. Lacosta, Kelley D. Goodman, Keir Hart, Duane E. Kerr, Geneva Ladtkow, Kenneth E. Netzel, Jeffrey R. Townsend, Raghavendra L. Bhandari, Peixiong Yi
  • Patent number: 9931160
    Abstract: 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: Grant
    Filed: May 22, 2015
    Date of Patent: April 3, 2018
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Andrew Edward Jenkins
  • Patent number: 9918730
    Abstract: Methods and devices for controlling motorized surgical devices are provided. In general, the methods and devices can allow a surgical device to grasp and cut tissue. In some embodiments, the device can include at least one sensor and a motor, and an output of the motor can be configured to be adjusted based at least in part on an output from the at least one sensor. The output of the motor can be configured to provide power for translation of a cutting element along an end effector of the device. Adjusting the motor's output can cause the cutting element to translate through the end effector at different speeds, thereby allowing the cutting element to cut through tissue being grasped by the end effector at different speeds.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: March 20, 2018
    Assignee: Ethicon LLC
    Inventors: Gregory A. Trees, Chad P. Boudreaux, Matthew C. Miller, Mark A. Davison, David C. Yates, John A. Hibner
  • Patent number: 9913653
    Abstract: A morcellator includes a housing, an elongated tube extending distally from the housing, and first and second electrodes. A distal end of the elongated tube is configured to cut tissue. The first electrode extends from the housing to the distal end of the elongated tube and is disposed around at least a portion of the distal end of the elongated tube. The second electrode extends distally beyond the first electrode. Another morcellator includes a housing, an elongated tube extending distally from the housing, and an oscillating mechanism. A distal end of the elongated tube includes opposing blade sections and at least one blunt section. The opposing blade sections are configured to cut tissue. The oscillating mechanism is configured to drive oscillation of the elongated tube to cut tissue with the blade sections.
    Type: Grant
    Filed: July 8, 2014
    Date of Patent: March 13, 2018
    Assignee: Covidien LP
    Inventors: Joe D. Sartor, Arlen K. Ward
  • Patent number: 9808259
    Abstract: A clip-over disposable assembly includes a switch assembly and a disposable body. The disposable body includes a first disposable member, a second disposable member including first and second wall portions, and a third disposable member. The first wall portion defines a first aperture therethrough and a first cavity configured to receive therein a first portion of the switch assembly. The third disposable member includes a third wall portion, wherein a body of the second disposable member and the third wall portion define an opening configured to allow a shaft of a hemostat-style surgical instrument to pass therethrough. The second wall portion and the third wall portion cooperatively define a chamber in communication with the opening and configured to receive therein at least a portion of the shaft of the hemostat-style surgical instrument, wherein the at least a portion of the shaft is received in the chamber from an off-axis position.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: November 7, 2017
    Assignee: COVIDIEN LP
    Inventor: John R. Twomey
  • Patent number: 9788887
    Abstract: An electrosurgical device that has a head having a face. A handle connectable to an RF generator. The device has a plurality of teeth extending from the face. At least one of the plurality of teeth as a first electrical charge. A second of the plurality of teeth has a second electrical charge.
    Type: Grant
    Filed: February 20, 2015
    Date of Patent: October 17, 2017
    Inventors: Alan G Ellman, Meindert Stek, John Pikramenos, Scott Goldsmith, Paul Buhrke, Spencer Ellman, Ellman Ian
  • Patent number: 9775666
    Abstract: A medical instrument includes a handpiece, an electromechanical transducer disposed in the handpiece, and an electrical circuit disposed at least partially in the handpiece for supplying alternating electrical current of a predetermined frequency to the transducer. A probe is operatively connected to the transducer for transmitting vibrations generated by the transducer to an operative site in a patient. A switching device is mounted to the handpiece and is operatively connected to the circuit and the transducer for enabling the supply of power to the transducer during a motion of the probe in a preselected direction relative to the handpiece and for disabling the supply of power to the transducer upon a termination of motion of the probe in the preselected direction.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 3, 2017
    Assignee: Misonix, Incorporated
    Inventors: Ronald R. Manna, Scott Isola, Theodore A. D. Novak
  • Patent number: 9750519
    Abstract: A surgical instrument includes a shaft defining a longitudinal axis therethrough and having an end effector assembly disposed at a distal end thereof. The shaft includes first and second shaft components that are releasably engageable with one another. A drive sleeve is disposed within the shaft and is longitudinally translatable relative to the shaft to transition the end effector assembly between a first state and a second state. The drive sleeve includes first and second drive sleeve components that are releasably engageable with one another. A coupling mechanism includes one or more shaft cantilever springs configured to releasably engage the first and second shaft components to one another and one or more drive sleeve cantilever springs configured to releasably engage the first and second drive sleeve components to one another.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: September 5, 2017
    Assignee: COVIDIEN LP
    Inventors: David M. Garrison, Edward M. Chojin, Duane E. Kerr, Peter M. Mueller, Allan J. Evans, James D. Allen, IV
  • Patent number: 9737358
    Abstract: In various embodiments, a surgical instrument is provided that may comprise an end effector for performing a surgical procedure on tissue, for example. The end effector may comprise at least one energy delivery surface and heat dissipation means for dissipating heat from at least a portion of the end effector. For example, in at least one embodiment, the end effector may comprise a first jaw, a second jaw, and a cutting member. The cutting member may comprise a cutting surface and a body, which may define a cavity and at least one opening communicating with the cavity. A fluid may be moved through the cavity to and/or from the opening(s). Additionally, in at least one embodiment, a surgical instrument's end effector may comprise a first jaw, a second jaw, a cutting member, and at least one heat pipe. Various other heat dissipation means are also disclosed.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: August 22, 2017
    Assignee: Ethicon LLC
    Inventors: Andrew T. Beckman, Bradley E. White, Cory G. Kimball, John F. Cummings, Al Mirel, Christopher J. Schall, Jeffrey L. Aldridge, Timothy G. Dietz, David A. Witt, Mary E. Mootoo, Zhifan F. Huang, Raymond M. Banks, Tamara Widenhouse, Frederick E. Shelton, IV, Jason L. Harris, Jeffrey S. Swayze, Prasanna Malaviya, Gregory W. Johnson, Paul Guerra
  • Patent number: 9730715
    Abstract: A guide wire, for use, for example, in guiding an elongated catheter through an artery or vein of a mammalian body having a stenosis and/or an occlusion therein, includes an elongated conductor having a longitudinal dimension, a proximal end and a distal end. The guide wire further includes an insulator overlying the elongated conductor. The insulator exposes a portion of the longitudinal dimension of the elongated conductor to form an electrode. The elongated conductor is arranged to be connected to a source of high voltage pulses to cause electrical arcs at the electrode that in turn form steam bubbles and shock waves to break the stenosis and/or open the occlusion and permit the guide wire to pass there through. Other embodiments are directed to a system including the guide wire and a method of using the guide wire.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: August 15, 2017
    Assignee: SHOCKWAVE MEDICAL, INC.
    Inventor: John M. Adams
  • Patent number: 9724154
    Abstract: Systems and methods are disclosed for providing and using an irrigated ablation catheter. The catheter may include a distal shell electrode having irrigation apertures. An insert disposed within the electrode has protrusions that mate with orifices in the shell of the electrode. Each protrusion has a port communicating with at least one interior lumen in the insert and a sensor is disposed in each port. A support seals the proximal end of the electrode and engages the insert. The plurality of sensors may be used to measure electrical and thermal characteristics surrounding the electrode and may help assess contact between the electrode and tissue and/or determine movement of the electrode during ablation.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: August 8, 2017
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventors: Jeffrey Schultz, Maria J. Duarte, Daniele Ghidoli, Kelvin Chuu, Meir Bar-Tal, Jeffrey Clark, Avri Hazan, Abraham Berger
  • Patent number: 9724152
    Abstract: The invention relates to an electrode arrangement for an electrosurgical gripping instrument with an electrode, a heating element and a resilient insulator arranged between the electrode and the heating element to insulate them from one another, wherein the insulator is soft relative to bending. The invention further relates to an electrosurgical gripping instrument with an electrode arrangement according to the invention.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: August 8, 2017
    Assignee: OLYMPUS WINTER & IBE GMBH
    Inventors: Andreas Hörlle, Hanno Winter, Adrian Schulze
  • Patent number: 9592072
    Abstract: In an ultrasonic probe, an insulation layer portion is formed on an outer surface of a probe main body portion. A first electrode portion provided on an outer surface of the insulation layer portion so that at least part of the first electrode portion is exposed to an outside in a treatment section, and at least part of a second electrode portion is exposed to the outside in the treatment section. The second electrode portion is electrically insulated from the first electrode portion by the insulation layer portion. The probe main body portion vibrates integrally with the insulation layer portion, the first electrode portion and the second electrode portion.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: March 14, 2017
    Assignee: OLYMPUS CORPORATION
    Inventor: Tsunetaka Akagane
  • Patent number: 9592090
    Abstract: 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: Grant
    Filed: March 11, 2011
    Date of Patent: March 14, 2017
    Assignee: Medtronic Advanced Energy LLC
    Inventor: Vaclav O. Podany
  • Patent number: 9555222
    Abstract: A method and apparatus for treating abnormal mucosa in the esophagus is disclosed, such that the depth of the treated tissue is controlled. The depth of ablation is controlled by monitoring the tissue impedance and/or the tissue temperature. A desired ablation depth is also achieved by controlling the energy density or power density, and the amount of time required for energy delivery. A method and apparatus is disclosed for measuring an inner diameter of a body lumen, where a balloon is inflated inside the body lumen at a fixed pressure.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: January 31, 2017
    Assignee: COVIDIEN LP
    Inventors: Jerome Jackson, Roger A. Stern, David S. Utley
  • Patent number: 9554844
    Abstract: An open electrosurgical forceps is provided and includes a pair of first and second shaft members each having a jaw member at a distal end thereof. The jaw members are movable from a first position in spaced relation relative to one another to a subsequent position wherein the jaw members cooperate to grasp tissue therebetween. A cutting mechanism is adapted to selectively and removably couple to one of the first and second shaft members. The cutting mechanism includes a cutting trigger for selectively advancing a knife blade extending therefrom through a knife channel defined along one or both of the jaw members. The first shaft member includes a stop feature formed thereon and the second shaft feature includes a stop member formed thereon. The stop feature and stop member configured to selectively engage one another to limit rotation of the first and second shaft members with respect to one another.
    Type: Grant
    Filed: February 8, 2016
    Date of Patent: January 31, 2017
    Assignee: COVIDIEN LP
    Inventor: Duane E. Kerr
  • Patent number: 9480526
    Abstract: A coaptive surgical sealing tool may be similar to an ordinary hemostat with long (50, 60, 70 or 80 mm) thin jaws for sliding into the liver parenchyma, without tearing the larger blood vessels. The jaws are spring loaded and are designed for uniform compression, and to avoid closing too quickly. The jaws are capable of sealing a 50, 60, 70 or 80 mm sealing length, in a single bite, although it can also seal shorter lengths as well. The tool can be used with existing ablative therapy microwave generators. The tool may be provided with irrigation and/or suction.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 1, 2016
    Assignee: City of Hope
    Inventor: Gagandeep Singh
  • Patent number: 9445858
    Abstract: A bipolar electrosurgical device is disclosed. The bipolar electrosurgical device includes a handle having a shaft and a distal end. The handle can be coupled to a source of electrical energy and a fluid source. A U-shaped first electrode extends distally in a plane from a pair of openings on the distal end of the shaft. The first electrode is in electrical communication with one of an active pole or a return pole of the source of electrical energy. A longitudinal second electrode extends distally from a middle opening on the distal end of the shaft. The second electrode is coplanar to the first electrode and electrically isolated from the first electrode. The second electrode is in electrical communication with the other of the active pole or the return pole of the source of electrical energy. The second electrode forms a lumen configured to be in fluid communication with the fluid source and a fluid opening for dispersing fluid.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: September 20, 2016
    Assignee: MEDTRONIC ADVANCED ENERGY LLC
    Inventors: Brian M. Conley, Jonathan J. Barry, Roger D. Greeley, Chad M. Greenlaw, Lorenzo C. Vaccarella, Joseph Sylvester
  • Patent number: 9433458
    Abstract: A surgical cautery device, system, and method of use may apply bipolar and/or sesquipolar electrocautery to target tissue via a pair of instruments with other primary surgical functions. The surgical cautery device and system may include first and second elements capable of forming an electrical circuit. The second element may be independently positionable with respect to the first element. The first and second elements may also include a surgical component with an independent surgical function. Exemplary surgical components include a rotary blade, a cutting tool, a grasper tool, a micro-scissors tool, a micro-grasping forceps tool, a dissector, a micro-dissector, curette, and a suction cannula. On some occasions, one of the surgical components may be interchangeable with another surgical component.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: September 6, 2016
    Inventor: Gabriel Zada
  • Patent number: 9414885
    Abstract: A catheter including an elongated shaft having a distal end and a proximal end, where the catheter includes a thermal element at the distal end thereof. The thermal element may be used in an ablation procedure or other procedure to heat a tissue adjacent a vessel. In some instances, the thermal element may be positioned in a first vessel and may operate to heat tissue adjacent a second vessel or adjacent an ostium between the first vessel and the second vessel. Further, the catheter may include an expandable portion on which the thermal element may be connected or positioned. The expandable portion(s) may comprise a basket or cage, a balloon, a memory shape and formable portion, and/or other mechanical expanders.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: August 16, 2016
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Martin R. Willard
  • Patent number: 9339327
    Abstract: Electrosurgical devices, methods, and systems for electrosurgical procedures as enabled by bipolar radiofrequency energy. An electrosurgical tissue dissecting device includes a shaft, two jaws extending from the shaft, a first electrode that is positioned on either one or both of the jaws, and a second electrode that is positioned at least partially between the two jaws.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: May 17, 2016
    Assignee: Aesculap AG
    Inventor: Timothy A. Koss
  • Patent number: 9259265
    Abstract: A surgical instrument can comprise an end effector including a plurality of jaws which can be configured to compress tissue therebetween. The end effector can further comprise one or more electrodes which can be configured to direct a flow of electrical current through the tissue in order to heat the tissue and denature collagen and/or other proteins within the tissue. As the tissue cools, the collagen and/or other proteins can renature and thereby seal the tissue. In certain embodiments, the end effector of the surgical instrument can further comprise movable portions which can apply a tension force to the tissue surrounding the tissue being sealed. In various circumstances, the tension force can reduce the over-denaturation, shrinkage, and/or other damage to the surrounding tissue caused by heat flowing from the end effector during the sealing process.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: February 16, 2016
    Assignee: Ethicon Endo-Surgery, LLC
    Inventors: Jason L. Harris, Jeffrey S. Swayze, Foster B. Stulen, Gregory W. Johnson, Prasanna Malaviya, Paul Guerra
  • Patent number: 9242351
    Abstract: The limbs of a bipolar forceps for RF coagulation are produced from a bimetal material, wherein an outer layer (18) consists of stainless steel and determines the mechanical properties of the forceps, while an inner layer (20) consists of a sliver alloy. An electrode (30) is formed from the inner layer at the distal end of the limbs (16). The inner layer (20) brings about good heat dissipation from the electrodes (30) and prevents the tissue from sticking thereto during coagulation.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: January 26, 2016
    Inventor: Thomas Butsch
  • Patent number: 9237923
    Abstract: An end effector comprises a first jaw, a second jaw, a firing beam, and a lockout feature. The second jaw pivots relative to the first jaw from an open position to a closed position. The firing beam has a sharp distal end and translates between the first and second jaws. The firing beam translates from a proximal position to a first distal position to pivot the second jaw to the closed position. The end effector applies bipolar RF energy when the firing beam is in the first distal position. The firing beam then translates to a second distal position to sever tissue captured between the first and second jaws. The lockout feature prevents the firing beam from advancing from the first distal position to the second distal position until the lockout feature is actuated.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 19, 2016
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Barry C. Worrell, Jonathan T. Batross, Michael J. Stokes, David A. Witt, Chad P. Boudreaux, David K. Norvell, Matthew C. Miller, Timothy G. Dietz
  • Patent number: 9233236
    Abstract: The devices and methods shown provide for the minimization of extravazation during arthroscopic surgery. The extravazation minimization device allows a surgeon to drain excess fluids from the soft tissue surrounding the surgical field while also providing a stable surgical portal for arthroscopic surgical instruments.
    Type: Grant
    Filed: March 25, 2013
    Date of Patent: January 12, 2016
    Assignee: Cannuflow, Inc.
    Inventor: Theodore R. Kucklick
  • Patent number: 9192428
    Abstract: An ultrasonic surgical instrument includes a transmission assembly extending from a body assembly that is configured to selectively couple to a disposable clamp arm. In some versions the clamp arm may include a tab that is insertable into a slot of an inner member such that actuation of the inner member rotates the clamp arm relative to a blade. In other versions the clamp arm may include a ball recess and the inner member may include a rod and ball. The clamp arm may be configured to snap onto the ball and rod. Alternatively, the clamp arm may include living hinges coupleable to an outer sheath and the inner member. Such living hinges may be unitarily formed with a clamp pad on the clamp arm. Further still, the clamp arm may be part of an end effector configured to couple to the transmission assembly via resilient tabs and slots.
    Type: Grant
    Filed: October 17, 2011
    Date of Patent: November 24, 2015
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Kevin L. Houser, Wells D. Haberstich, Matthew C. Miller, Daniel W. Price
  • Patent number: 9168092
    Abstract: An electrode tip for use in performing electrosurgical operative procedures is disclosed. The electrode tip includes a main body that can receive electrical energy from an electrosurgical generator. The main body includes a working surface that communicates the electrical energy to patient tissue during the operative procedure. An insulative sheath is disposed around a portion of the electrode tip to prevent electrical energy from being communicated from the covered portions of the electrode tip to patient tissue. The insulative sheath has a leading edge that is shaped to minimize resistance to the movement of the electrode tip through patient tissue. The leading edge can be arcuately shaped or angled relative to a longitudinal axis of the electrode tip to provide the resistance reducing characteristics.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: October 27, 2015
    Assignee: Megadyne Medical Products, Inc.
    Inventors: Shawn K. Horner, Ryan D. Lewis
  • Patent number: 9149326
    Abstract: An electrosurgical working end and method for sealing and transecting tissue. An exemplary working end provides curved jaw members that are positioned on opposing sides of the targeted anatomic structure. The working end carries a slidable extension member having flange portions with inner surfaces that slide over the jaw members to clamp tissue therebetween. The working end carries an independent slidable cutting member that is flexible to follow the curved axis of the jaws. The electrosurgical surfaces of the jaws include partially-resistive bodies for carrying a current or load which modulates ohmic heating in the engaged tissue to prevent charring and desiccation of tissue to create a high strength thermal seal.
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: October 6, 2015
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Csaba Truckai, John H. Shadduck
  • Patent number: 9113929
    Abstract: A renal denervation device can include an elongated catheter body extending along a longitudinal axis, and an assembly connected to the catheter body. The assembly includes a plurality of heating elements connected to the catheter body. Each heating element has a conductor and a layer of an RF dissipating material such as a polymer overlying the conductor. During operation of the device, the layer of RF dissipating material is disposed between the conductor and body tissues of a subject. The layer of RF dissipating material is substantially thicker than the Debye length within the material in order to reduce the electric field reaching the tissue and to eliminate direct contact of the electrode with the body tissue.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: August 25, 2015
    Assignee: St. Jude Medical, Cardiology Division, Inc.
    Inventor: Edward E. Parsonage
  • Patent number: 9113899
    Abstract: A surgical instrument includes a shaft defining a longitudinal axis therethrough and having an end effector assembly disposed at a distal end thereof. The shaft includes first and second shaft components that are releasably engageable with one another. A drive sleeve is disposed within the shaft and is longitudinally translatable relative to the shaft to transition the end effector assembly between a first state and a second state. The drive sleeve includes first and second drive sleeve components that are releasably engageable with one another. A coupling mechanism includes one or more shaft cantilever springs configured to releasably engage the first and second shaft components to one another and one or more drive sleeve cantilever springs configured to releasably engage the first and second drive sleeve components to one another.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: August 25, 2015
    Assignee: Covidien LP
    Inventors: David M. Garrison, Edward M. Chojin, Duane E. Kerr, Peter M. Mueller, Allan J. Evans, James D. Allen, IV
  • Patent number: 9113906
    Abstract: An end effector assembly for use with a forceps includes a pair of jaw members, a knife assembly, and one or more cam assemblies. One or more of the jaw members are moveable relative to the other about a pivot between open and closed positions. One or more of the jaw members include a knife channel. The pivot includes first and second sections defining a passage therebetween. The knife assembly includes a knife blade and an actuation shaft. The knife blade is disposed distally relative to the pivot. The actuation shaft is configured for slidable translation through the passage to allow selective advancement of the knife blade through the knife channel. The one or more cam assemblies are operably coupled to the one or more moveable jaw members and are actuatable to move the one or more jaw members between the open and closed positions for grasping tissue therebetween.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: August 25, 2015
    Assignee: Covidien LP
    Inventor: Peter M. Mueller
  • Patent number: 9107673
    Abstract: An irrigation catheter assembly comprises an electrode sheath mount for mounting an electrode sheath. The mount has a laterally arranged aperture defined in it through which conductors for electrodes of the electrode sheath pass, in use. A connector, to which a source of irrigation fluid is connectable, is connected to a proximal end of the electrode sheath mount. The connector communicates with an interior of the mount so that, in use, fluid passes through the lumen of the electrode sheath to be delivered to a distal end of the electrode sheath.
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: August 18, 2015
    Assignee: CATHRX LTD.
    Inventors: Evan Chong, Zoran Milijasevic, Neil L. Anderson