Bipolar Electrodes Patents (Class 606/50)
  • Patent number: 11903631
    Abstract: Electrosurgery blades including electrosurgery blade assemblies having argon beam capability. The electrosurgery blade includes a non-conductive planar member having opposite planar sides and a sharp cutting tip and a conductive layer located on one or both of the opposing planar sides of the non-conductive layer. In embodiments of the electrosurgery blade assemblies having argon beam capability, the electrosurgery blade assembly includes a non-conductive tube member having a hollow tubular shaped opening and a slot where at least a portion of the conductive layer of the electrosurgery blade is positioned within the slot of the non-conductive tube member.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: February 20, 2024
    Assignee: I.C. Medical, Inc.
    Inventor: Ioan Cosmescu
  • Patent number: 11896439
    Abstract: A surgical end effector includes an anvil assembly; a cartridge assembly including a plurality of fasteners; a drive assembly movable longitudinally to approximate the anvil assembly relative to the cartridge assembly; and a strain gauge circuit disposed within the cartridge assembly, the strain gauge circuit configured to measure a strain imparted on the cartridge assembly by the drive assembly.
    Type: Grant
    Filed: December 13, 2021
    Date of Patent: February 13, 2024
    Assignee: Covidien LP
    Inventor: Matthew Eschbach
  • Patent number: 11883053
    Abstract: An arthroscopic cutting probe includes an outer sleeve having a longitudinal bore and an outer cutting window at its distal end. The outer sleeve has a metal body electrically insulated over its exterior except for a portion at least partially surrounding the outer cutting window which comprises an active electrode. An inner sleeve is rotationally disposed in a bore of the outer sleeve, and the inner sleeve has a distal end, a proximal end and a longitudinal passageway having an electrically conductive inner surface which comprises a return electrode. A dielectric cutting member is attached to the distal end of the inner sleeve and has a central passage extending from an inner cutting window at its distal end to an opening at its proximal end.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: January 30, 2024
    Assignee: Relign Corporation
    Inventors: Aaron Germain, Jacob Tonkel, Jan Echeverry
  • Patent number: 11877787
    Abstract: Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 23, 2024
    Assignee: Gyrus ACMI, Inc.
    Inventors: Kester Julian Batchelor, Huisun Wang
  • Patent number: 11871980
    Abstract: An electrosurgical system having an electrosurgical device, an accessory charging circuit, and an electrosurgical unit is disclosed. The electrosurgical device is operable in at least one of a monopolar mode and a bipolar mode. The electrosurgical unit electrically is coupled to the electrosurgical device and the accessory charging circuit. The electrosurgical unit provides one of a monopolar RF energy signal and a bipolar RF energy signal to the electrosurgical device corresponds with an activated mode and a bipolar signal to the accessory charging circuit.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: January 16, 2024
    Assignee: Medtronic Advanced Energy LLC
    Inventor: David Hubelbank
  • Patent number: 11839420
    Abstract: A surgical end effector may comprise first and second jaw members. The second jaw member may comprise an offset proximal supply electrode that is positioned to contact an opposing member of the first jaw member when the first and second jaw members are in the closed position. The second jaw member may also comprise a distal supply electrode that is positioned distal of the offset proximal electrode and is aligned with a conductive surface of the first jaw member when the first and second jaw members are in the closed position. When the first and second jaw members are in the closed position, the proximal supply electrode may be in contact with the opposing member and the distal supply electrode is not in contact with the conductive surface of the first jaw member.
    Type: Grant
    Filed: March 29, 2022
    Date of Patent: December 12, 2023
    Assignee: Cilag GmbH International
    Inventors: Frederick E. Shelton, IV, Jerome R. Morgan, Chester O. Baxter, III, David C. Yates
  • Patent number: 11832870
    Abstract: Apparatus and associated methods relate to controlling electrical power of an electrotherapeutic signal that is provided to a biological tissue engaged by an electrosurgical instrument during a medical procedure. Electrical power—a product of a voltage difference across and an electrical current conducted by the engaged biological tissue—is controlled according to a therapeutic schedule. The electrotherapeutic schedule can be reduced or terminated in response to a termination criterion being met. In some examples, the termination criterion is a current characteristic, such as, for example, a decrease in current conducted by the engaged biological tissue. In some examples, the termination criterion is a biological tissue resistance characteristic, such as, for example, an increase in the biological tissue resistance that exceeds a predetermined delta resistance value.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: December 5, 2023
    Assignee: Gyrus ACMI, Inc.
    Inventors: Kester Julian Batchelor, Huisun Wang
  • Patent number: 11826091
    Abstract: A bipolar surgical instrument having a front region (3) with at least four coagulation elements (6, 7, 8, 9) entered in the slots at the at least four corners of a rectangle or at least four quarters of a circle of the insulation body (22) for coagulating and one cutting element at the centre of insulating body for cutting the tissue and/or vessel in the body, thereby having an at least five electrode arrangement for handling and treating the tissue and/or vessel. The cutting element (10) can be at least one blade or at least one needle and it can be fixed or moved longitudinally in an advanced position or retracted position.
    Type: Grant
    Filed: August 10, 2017
    Date of Patent: November 28, 2023
    Inventor: Pradip Barsu Narkhede
  • Patent number: 11793537
    Abstract: A surgical instrument system is disclosed comprising a handle, an elongate shaft selectively attachable to the handle, a battery pack replaceably attachable to the handle, and an end effector extending distally from the elongate shaft. In various instances, the battery pack comprises a power source couplable to the motor and a display. The elongate shaft comprises a processor and a memory couplable to the processor. In various instances, the memory comprises a control program which, when executed, causes the processor to initiate a desired function. In various instances, the end effector comprises a sensing circuit configured to detect a condition of the end effector. The sensing circuit is in signal communication with the processor.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: October 24, 2023
    Assignee: Cilag GmbH International
    Inventors: Frederick E. Shelton, IV, Jason L. Harris, David C. Yates
  • Patent number: 11766290
    Abstract: A method and apparatus are disclosed for a needle for gaining access to the pericardial cavity of a heart. The needle includes an elongate member (e.g. a main shaft) defining a lumen and a side-port in fluid communication with the lumen; a blunt atraumatic tip for delivering energy for puncturing tissue; and a guiding surface (e.g. a ramp) for directing a device (e.g. a guidewire) through the side-port. The method includes using the needle for tenting a pericardium and delivering energy for puncturing the pericardium, and advancing a guidewire or other device through the needle and into the pericardial cavity.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: September 26, 2023
    Assignee: Boston Scientific Medical Device Limited
    Inventors: John Paul Urbanski, Brock Miller, Rund Abou-Marie
  • Patent number: 11751905
    Abstract: A self-contained, battery powered transseptal crossing system is disclosed. An elongate, flexible electrically conductive needle body has a proximal end and a distal end. An insulation layer surrounds the sidewall and leaves exposed a distal electrode tip. A generator is configured to deliver RF energy to the electrode tip, and includes a processor configured to take impedance measurements at the tip to confirm contact with the intra atrial septum and/or confirm entry into the left atrium.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: September 12, 2023
    Assignee: Cross Vascular, Inc.
    Inventors: Steven Howard, Marshall L. Sherman, Randell Werneth, Bradley Klos
  • Patent number: 11744581
    Abstract: A surgical instrument that comprises an end effector comprising a first jaw, a second jaw, a staple cartridge, and at least one electrode. The surgical instrument further comprises a drive member, a motor assembly, and a control circuit. The control circuit is configured to cause the at least one electrode to deliver a therapeutic energy to the tissue in a first phase of a surgical treatment, cause the motor assembly to move the drive member to deploy staples into the tissue in a second phase of the surgical treatment, monitor a first tissue property in the first phase, and switch from the first phase to the second phase if at least one of two conditions is met, set a parameter of the second phase based on at least one measurement of the tissue property determined in the first phase, and monitor a second tissue property, in the second phase.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: September 5, 2023
    Assignee: Cilag GmbH International
    Inventors: Frederick E. Shelton, IV, Kevin M. Fiebig, Sarah A. Worthington, Patrick L. Creamer, John E. Brady
  • Patent number: 11737811
    Abstract: A forceps includes an instrument housing, an elongated shaft assembly extending distally from the instrument housing, and a rotation knob assembly. The rotation knob assembly is supported in the instrument housing and includes a rotation knob and an inner housing. The rotation knob is coupled to the shaft assembly and positioned to rotate about the inner housing to rotate the elongated shaft assembly relative to the instrument housing. The inner housing is coupled to the instrument housing and supports electrical contacts configured to transmit electrical energy through the rotation knob assembly.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: August 29, 2023
    Assignee: COVIDIEN LP
    Inventors: John A. Hammerland, William E. Robinson, Stephen J. Stamm
  • Patent number: 11723713
    Abstract: A cutting element for an electrosurgical device. The cutting element includes an elongate non-conductive body having a first face opposite a second face, the first face and the second face defining an edge there between. A conductive element is disposed only along the edge, the conductive element being configured to cut tissue with monopolar radiofrequency energy.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: August 15, 2023
    Assignee: MEDTRONIC ADVANCED ENERGY LLC
    Inventors: Nathaniel R. Lau, Christopher Barden, Jessica Sacks, William X. Siopes
  • Patent number: 11684411
    Abstract: An effector includes a tubular body having a proximal end and a distal end. The effector holds a plug or closure at the distal end of the tubular body; an active electrode at the distal end of the body; an insulator on the body; and one or more return electrodes on the insulator. The body dissipates heat generated by the one or more return electrodes from the distal end of the body to the proximal end of the body.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: June 27, 2023
    Assignee: Gyrus ACMI, Inc.
    Inventors: Kester Julian Batchelor, Huisun Wang, Jeffrey J. Nelson, Cristian Spanu, Nikhil M. Murdeshwar
  • Patent number: 11684702
    Abstract: An electrosurgical device having a pair of jaws, at least one electrode supported by one of the pair of jaws, and a sheet of expanded polytetrafluoroethylene positioned in covering relation to at least a portion of the at least one electrode. The sheet may have a porosity of between thirty and ninety percent. The sheet may have a plurality of pores with an average diameter of between 0.2 and 1.0 micrometers.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 27, 2023
    Assignee: Conmed Corporation
    Inventor: Derek Eilers
  • Patent number: 11648046
    Abstract: An electrode assembly for use with an electrosurgical instrument includes a base portion, a return lead adapted to be electrically coupled to a return terminal of an electrosurgical generator, an electrical insulator supported on a distal portion of the return lead, a tensioning mechanism, and an active lead adapted to be electrically coupled to an active terminal of the electrosurgical generator. The tensioning mechanism includes a slider slidably disposed in the base portion, a rotation rod threadably coupled to the slider, and a spring proximally biasing the slider. The active lead having a first end portion securely fixed to the base portion and a second end portion slidably coupled to the rotation rod of the tensioning mechanism. A portion of the active lead extends around the electrical insulator. Rotation of the rotation rod causes axial displacement of the second end portion of the active lead to tension the active lead about the electrical insulator.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: May 16, 2023
    Assignee: Covidien LP
    Inventors: Jacob C. Baril, Saumya Banerjee, Matthew A. Dinino, Roy J. Pilletere, Justin Thomas, Ernest A. Addi
  • Patent number: 11627960
    Abstract: A modular surgical instrument system that comprises modular components and a control circuit electrically couplable to the modular components. The modular components comprise a shaft and a handle assembly. The handle assembly comprises a disposable outer housing. The disposable outer housing is movable between an open configuration and a closed configuration. The handle assembly further comprises a control inner core receivable inside the disposable outer housing in the open configuration. The disposable outer housing is configured to isolate the control inner core in the closed configuration. The modular components further comprise a loading unit releasably couplable to the shaft and a staple cartridge releasably couplable to an end effector. The loading unit comprises the end effector.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: April 18, 2023
    Assignee: Cilag GmbH International
    Inventors: Frederick E. Shelton, IV, Kevin M. Fiebig, Ravi C. Patel, Joshua L. Liebowitz
  • Patent number: 11602391
    Abstract: A cautery pen tip accessory cover comprises a cylindrical member that can receive a cautery pen in a first end and the tip of the cautery pen can extend from a second opposite end when the cover is in a retracted configuration. The cylindrical member has an opened lateral exposure that allows the feel of the cautery pen therethrough. A cover exposure opening in the cylindrical member to provide access to a trigger of the cautery pen when the cautery pen tip cover is in the retracted configuration. A resilient member urges the cautery pen tip cover to the non-retracted configuration where access to the cautery pen trigger is prevented. The cylindrical member is easily retracted by a finger ring configured permanently into the cylindrical member, allowing easy retraction of the cover by the operator squeezing the cover to a resistance bar stabilization system accessory configured over the cautery pen.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: March 14, 2023
    Inventor: Suzanne Lee Lowry
  • Patent number: 11589918
    Abstract: A catheter ablation system includes: a catheter probe having distal end including: a temperature sensor; a plurality of irrigation holes; and an ablating electrode; a radiofrequency (RF) heating controller coupled to the catheter probe and configured to supply RF energy to the ablating electrode to control the ablating electrode to emit heat at a target power; an irrigation controller coupled to the catheter probe and configured to supply an irrigation fluid at a continuously adjustable irrigation flow rate through the catheter probe to exit through the irrigation holes; and an operating console having a processor and memory, the memory storing instructions that, when executed by the processor, cause the processor to control the irrigation controller to set the irrigation flow rate based on the target power and a target average temperature.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: February 28, 2023
    Assignee: BIOSENSE WEBSTER (ISRAEL) LTD.
    Inventor: Alexander Lifshitz
  • Patent number: 11589919
    Abstract: A catheter device for renal denervation ablation includes a flexible catheter shaft having an electrically insulating expandable member in its distal portion with at least one electrode located proximal to the member, at least one electrode located distal to the member, and with openings in the distal shaft with at least one opening proximal to the proximal electrode and one opening distal to the distal electrode of said electrode pair, said openings connected through an inner lumen in the catheter that provides a path for blood to flow through the expandable member. In one embodiment, the device comprises a flexible catheter shaft with a multiplicity of recessed paired electrodes disposed in recessed spaces in its distal portion, such that an electrically conducting portion of each electrode is exposed to the exterior of the catheter within a recessed space, and with an electrical insulator separating the electrodes of each pair.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 28, 2023
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Gary Long
  • Patent number: 11564740
    Abstract: An ultrapolar telescopic electrosurgery pencil that can be used in both monopolar and bipolar modes for cutting and coagulation. The ultrapolar telescopic electrosurgery pencil can operate at very low power levels (such as 15-20 Watts or less) to both cut and coagulate tissue thereby reducing patient risk and damage to tissue.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: January 31, 2023
    Assignee: I.C. Medical, Inc.
    Inventor: Ioan Cosmescu
  • Patent number: 11547465
    Abstract: A surgical end effector may comprise first and second jaw members. The second jaw member may comprise an offset proximal supply electrode that is positioned to contact an opposing member of the first jaw member when the first and second jaw members are in the closed position. The second jaw member may also comprise a distal supply electrode that is positioned distal of the offset proximal electrode and is aligned with a conductive surface of the first jaw member when the first and second jaw members are in the closed position. When the first and second jaw members are in the closed position, the proximal supply electrode may be in contact with the opposing member and the distal supply electrode is not in contact with the conductive surface of the first jaw member.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: January 10, 2023
    Assignee: Cilag GmbH International
    Inventors: Frederick E. Shelton, IV, Jerome R. Morgan, Chester O. Baxter, III, David C. Yates
  • Patent number: 11540872
    Abstract: An electrosurgical instrument (1) includes a first shaft member (110) pivotably coupled to a second shaft member (120), and a trigger (184) disposed on the second shaft member (120). The first and second shaft members (110,120) respectively include first and second handle members (130,140), and first and second jaw members (150,160). The first and second shaft members (110,120) define a longitudinal axis extending through a pivot, and first and second pivot axes that are substantially orthogonal to each other and the longitudinal axis. At least one of the first or second handle members (130,140) is pivotable about the first pivot axis to move the first and second jaw members (150,160) to an open position, a grasping position, or a sealing position. The trigger (184) is movable to pivot at least one of the first or second shaft members (110,120) about the second pivot axis to laterally displace the first and second jaw members (150,160) relative to each other to a cutting position.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: January 3, 2023
    Assignee: Covidien LP
    Inventors: Weijiang Ding, Kai Liu, Zaifeng Zhou
  • Patent number: 11534233
    Abstract: A device for treating tissue includes a catheter including an elongated body extending from a proximal end to a distal end and including a lumen extending therethrough, a distal tip connected to the distal end of the elongated body and including a first electrode and a second electrode extending thereabout, the first electrode extending to a distal opening of the lumen and a first needle extending longitudinally from a proximal end to a distal end, the first needle slidably received within the lumen of the catheter to be moved between a retracted bipolar configuration, in which the distal end of the needle is proximal the distal opening of the catheter, and an extended monopolar configuration, in which the distal end of the first needle extends distally past the distal opening of the catheter so that the first needle contacts the first electrode and is configured to cut tissue.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: December 27, 2022
    Assignee: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Robert B. Devries, Peter L. Dayton, Paul Smith
  • Patent number: 11504181
    Abstract: An arthroscopic system includes a hand piece with a motor drive. an elongate shaft assembly is detachably secured to a distal end of the hand piece, and the elongate shaft assembly includes an outer sleeve and an inner sleeve rotatably mounted in the outer sleeve. The inner sleeve couples to the motor drive when the elongate shaft assembly is attached to the hand piece, and an inner distal cutting window on the inner sleeve moves in and out of alignment with an outer distal cutting window on the outer sleeve as the motor drive rotates the inner sleeve.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: November 22, 2022
    Assignee: Relign Corporation
    Inventors: Aaron Germain, Jeff Norton
  • Patent number: 11471212
    Abstract: In general, systems, methods, and devices for electrosurgical devices with monopolar and bipolar functionality are provided. In an exemplary embodiment, a surgical device can have bipolar functionality, in which tissue engaged by the device is treated in a bipolar energy delivery mode, and can have monopolar functionality in which tissue engaged by the device is treated in a monopolar energy delivery mode.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: October 18, 2022
    Assignee: Cilag GmbH International
    Inventors: Matthew Schneider, Mark Glassett, Richard W. Timm, Chad Frampton, Gaetana Michelet, John Brady, Michael Ehninger, Gregory Bakos, Tylor Muhlenkamp, Brian D. Bertke, Brian Walter
  • Patent number: 11446077
    Abstract: A treatment system comprises a treatment tool and an energy source apparatus is used to electrically communicate with the treatment tool. The energy output source is configured to output high-frequency electric power to the bipolar electrodes so as to cause a high-frequency current to flow through a treatment target between the bipolar electrodes. A processor is used to control the energy output source. The processor performs an output control process on the heater electric power so that the heater reaches a target temperature and maintains at the target temperature. The processor detects a parameter related to the heater from the heater in the output control process based on the target temperature. The processor sets a threshold value used to determine to stop or to lower the output to the bipolar electrodes while the treatment target is being modified by the high-frequency current applied thereto based on the detected parameter.
    Type: Grant
    Filed: September 4, 2019
    Date of Patent: September 20, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Sadayoshi Takami, Yoshitaka Honda
  • Patent number: 11446079
    Abstract: A surgical instrument end effector assembly includes a first jaw member and a second jaw member. The second jaw member includes an ultrasonic blade body and first and second electrodes disposed on either side of the ultrasonic blade body and extending longitudinally along a majority of a length of the ultrasonic blade body. The ultrasonic blade body is adapted to receive ultrasonic energy from an ultrasonic waveguide. The first and second electrodes taper in width proximally to distally and are adapted to connect to a source of electrosurgical energy. The first jaw member is movable relative to the second jaw member between a spaced-apart position and an approximated position for grasping tissue therebetween.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: September 20, 2022
    Assignee: Covidien LP
    Inventors: Rachael L. Kabala, Anthony B. Ross, David J. Van Tol, Robert B. Stoddard, Robert B. Smith
  • Patent number: 11426228
    Abstract: An electrosurgical unit including a radiofrequency generator configured to generate electrosurgical energy. The radiofrequency generator includes a first receptacle configured to electrically couple with an electrosurgical hand piece configured to deliver bipolar radiofrequency energy. A second receptacle is included and configured to electrically couple with an electrosurgical hand piece configured to deliver monopolar radiofrequency energy. The radiofrequency generator includes a relay circuit configured to allow simultaneous radiofrequency energy delivery to the electrosurgical hand pieces in the first receptacle and the second receptacle.
    Type: Grant
    Filed: August 2, 2019
    Date of Patent: August 30, 2022
    Assignee: Medtronic Advanced Energy LLC
    Inventors: Jesse A. Smith, David Hubelbank, Duane Marion
  • Patent number: 11426227
    Abstract: The disclosed technology is directed to a treatment tool having a blade configured to engage with a treatment target. A heater is configured to be spaced apart from the blade. A first thermally conductive member is sandwiched between the blade and the heater so as to transmit heat to the blade. The first thermally conductive member includes respective first and second portions each of which is disposed on respective distal-end and proximal-end sides in longitudinal directions of the blade for thermally conducting a different prescribed quantity of heat per unit time from each of the respective first and second portions to the blade via the heater. The first thermally conductive member includes a first thermal conductivity anisotropy that is higher in longitudinal directions of the blade and is lower in widthwise directions transverse to the longitudinal directions.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: August 30, 2022
    Assignee: OLYMPUS CORPORATION
    Inventors: Tsunetaka Akagane, Yoshitaka Honda
  • Patent number: 11382685
    Abstract: An electrosurgical forceps includes a pair of first and second shaft members pivotably coupled to one another, an end effector assembly coupled to the pair of first and second shaft members, and a resilient, compressible pivot assembly pivotably coupling the first and second shaft members to one another.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 12, 2022
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Daniel W. Mercier, Craig V. Krastins, Jennifer L. Rich, Kelley D. Goodman
  • Patent number: 11376062
    Abstract: An electrosurgical forceps includes first and second shaft members and first and second jaw members extending distally from the respective first and second shaft members. A pivot couples the first and second shaft members with one another such that the first and second shaft members are movable relative to one another between a spaced-apart position and an approximated position to move the first and second jaw members relative to one another between an open position and a closed position. The jaw members are configured to facilitate tissue treatment, tissue division, and blunt tissue dissection.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: July 5, 2022
    Assignee: COVIDIEN LP
    Inventors: Grant T. Sims, Benjamin R. Arts, Kelley D. Goodman, David M. Keffeler, Craig V. Krastins, Robert F. McCullough, Jr., Daniel W. Mercier, Jennifer L. Rich
  • Patent number: 11304743
    Abstract: An electrosurgical forceps includes a pair of first and second shaft members pivotably coupled to one another, an end effector assembly coupled to the pair of first and second shaft members, a knife, and a biasing member. The biasing member is disposed about the knife and configured to resiliently bias the knife toward a retracted position.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: April 19, 2022
    Assignee: Covidien LP
    Inventors: Grant T. Sims, Kelley D. Goodman, Craig V. Krastins, Robert F. Mccullough, Jr., Jennifer L. Rich, Daniel W. Mercier
  • Patent number: 11272976
    Abstract: An end effector is disclosed. The end effector includes a first jaw and a second jaw configured to move from a first position to a second position. The second jaw includes a channel and a cartridge removably coupled to the channel. A first electrode is configured to apply electrosurgical energy to a tissue and a second electrode is configured to apply electrosurgical energy to the tissue. In the second position a distance between the first electrode and the first jaw is greater than a distance between the second electrode and the first jaw. The first electrode is configured to apply electrosurgical energy to the tissue when the first and second jaws are moving from the first position to the second position, and the second electrode is configured to apply electrosurgical energy to the tissue in the second position.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: March 15, 2022
    Assignee: Cilag GmbH International
    Inventors: Tamara Widenhouse, David C. Yates, Jason L. Harris, Frederick E. Shelton, IV
  • Patent number: 11266455
    Abstract: An ultrasonic surgical instrument and method of sealing a tissue based on a production clamp force includes determining an ultrasonic seal process with the controller based on the production clamp force between an upper jaw and a lower jaw of an end effector and activating the ultrasonic energy or RF energy according to the determined ultrasonic seal process. The ultrasonic surgical instrument further includes an end effector having an ultrasonic blade, a jaw, an RF electrode, and a controller. The jaw is movably positioned relative to the ultrasonic blade and configured to move between an open position and a closed position and clamp together with a production clamp force in the closed position. The controller operatively connects to the ultrasonic blade and the RF electrode and includes the ultrasonic seal process based on the production clamp force stored thereon for driving the ultrasonic blade or the RF electrode.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: March 8, 2022
    Assignee: Cilag GmbH International
    Inventor: Amrita S. Sawhney
  • Patent number: 11259881
    Abstract: A tool driver for use in robotic surgery includes a base configured to couple to a distal end of a robotic arm, and a tool carriage slidingly engaged with the base and configured to receive a surgical tool. In one variation, the tool carriage may include a plurality of linear axis drives configured to actuate one or more articulated movements of the surgical tool. In another variation, the tool carriage may include a plurality of rotary axis drives configured to actuate one or more articulated movements of the surgical tool. Various sensors, such as a capacitive load cell for measuring axial load, a position sensor for measuring linear position of the guide based on the rotational positions of gears in a gear transmission, and/or a capacitive torque sensor based on differential capacitance, may be included in the tool driver.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: March 1, 2022
    Assignee: VERB SURGICAL INC.
    Inventors: Pablo E. Garcia Kilroy, Jose Luis Cordoba, Berk Gonenc, Xin Liu
  • Patent number: 11246644
    Abstract: A surface ablation system includes an electrosurgical generator, and elongated shaft, a plug, and a circuit assembly. The elongated shaft includes a proximal end portion and a distal end portion. The plug is supported on the distal end portion of the elongated shaft. The circuit assembly is supported on the plug and in electrical communication with the electrosurgical generator. The circuit assembly includes spaced-apart traces positioned in arrays about the plug. Each of the traces is configured to emit electrosurgical energy along the arrays to treat tissue positioned adjacent to the traces.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: February 15, 2022
    Assignee: Covidien LP
    Inventors: Joe D. Sartor, Arlen K. Ward, John A. Hammerland, III, Eric J. Larson, Patrick J. Digmann
  • Patent number: 11241273
    Abstract: A surgical instrument has an end-effector located on the end of a rotatable shaft, the shaft projecting from a handle. A thumbwheel is provided at the proximal end of the handle, which controls the rotation of the shaft, and hence the rotational orientation of the end-effector. The end-effector is capable of grasping, cutting, and sealing and/or coagulating tissue, and one of the operations is controlled by a switch located on the upper surface of the proximal end of the handle. The switch is oriented on the handle to be generally above the thumbwheel, in a relative position to the thumbwheel so that both the thumbwheel and the switch may be activated by the user's thumb, without the user having to alter his grip on the handle. In one embodiment of the invention the switch is therefore vertically oriented above the thumbwheel.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: February 8, 2022
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal
  • Patent number: 11179150
    Abstract: Various examples are directed to systems and methods for operating a surgical instrument comprising a firing member translatable proximally and distally along a longitudinal axis between a stroke begin position to a stroke end position distal of the stroke begin position; a knife coupled to the firing member; and a motor coupled to the firing member to translate the firing member between the stroke begin position and the stroke end position. A control circuit may receive a firing signal and begin a firing member stroke by providing an initial motor setting to the motor. The control circuit may maintain the initial motor setting for an open-loop portion of the firing member stroke. The control circuit may receive energy data describing energy provided to the motor during the open-loop portion of the firing member stroke and may select a firing control program based at least in part on the energy data.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: November 23, 2021
    Assignee: Cilag GmbH International
    Inventors: David C. Yates, Frederick E. Shelton, IV, Jason L. Harris
  • Patent number: 11147613
    Abstract: A surgical instrument includes a housing having an elongated shaft extending distally therefrom configured to support an end effector at a distal end thereof. A handle operably couples to a drive assembly and is moveable to actuate the end effector. The drive assembly includes: front and rear drive tubes, the rear drive tube including a front washer disposed at a distal end thereof, the front drive tube including a rear washer disposed at a proximal end thereof; a stopper slidably disposed atop the front tube, the stopper and the rear washer defining a dead space therebetween; and a spring operably associated with the stopper. Initial actuation of the handle moves the front and rear drive tubes to close the end effector to grasp tissue and, once closed, further movement of the handle moves the rear drive tube to slide the stopper to eliminate the dead space.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: October 19, 2021
    Assignee: COVIDIEN LP
    Inventor: Purvishkumar H. Soni
  • Patent number: 11129667
    Abstract: The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve.
    Type: Grant
    Filed: April 14, 2020
    Date of Patent: September 28, 2021
    Assignee: Covidien LP
    Inventors: Jennifer R. McHenry, Alexander M. Waskiewicz, Anthony D. Ricke, Rebecca J. Coulson, Jessica E. C. Olson
  • Patent number: 11103301
    Abstract: An interchangeable tool assembly is disclosed. The interchangeable tool assembly includes a first jaw configured to support a staple cartridge during a first time period and a radio-frequency cartridge during a second time period. A second jaw is coupled to the first jaw. A surface of the second jaw defines a plurality of staple forming pockets configured to form staples driven from the staple cartridge. An electrically insulative material covers segments of the surface of the second jaw other than the staple forming pockets. The staple forming pockets define at least one return path for radio-frequency energy delivered by the radio-frequency cartridge.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: August 31, 2021
    Assignee: Cilag GmbH International
    Inventors: Jeffrey D. Messerly, Frederick E. Shelton, IV, David C. Yates
  • Patent number: 11090040
    Abstract: A medical device includes an energy delivery device. The energy delivery device has an elongate member, a first arm extending from the elongate member and a second arm extending from the elongate member. The first arm is configured to move with respect to the second arm. The energy delivery device includes an energy element. The energy element is configured to delivery energy to a portion of a filament when the filament is disposed between the first arm and the second arm. The energy device includes an actuation member. The actuation member is configured to move the first arm with respect to the second arm in response to the actuation member being actuated. The actuation member is operatively coupled to the energy element such that the energy element is activated in response to the actuation member being actuated.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: August 17, 2021
    Assignee: Boston Scientific Scimed, Inc.
    Inventors: Jozef Slanda, Peter J. Pereira, Manuel B. Teixeira
  • Patent number: 11065049
    Abstract: An end effector assembly of a forceps includes a first jaw member with a first sealing surface and a second sealing surface; a second jaw member with a first sealing surface and a second sealing surface, the first jaw member and the second jaw member being moveable relative to each other between an open position and a closed position, the first jaw member and the second jaw member including a blade slot defined therein and extending substantially along the first jaw member and the second jaw member, the first sealing surfaces being positioned on an opposite side of the blade slot than the second sealing surfaces; and a cutting blade that reciprocates in the blade slot. When the first jaw member and the second jaw member are in the closed position, the first sealing surfaces are separated by a first gap and the second sealing surfaces are separated by a second gap, the second gap being larger than the first gap.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: July 20, 2021
    Assignee: Gyrus Acmi, Inc.
    Inventors: Huisun Wang, Kester Batchelor
  • Patent number: 11045248
    Abstract: The electrosurgical systems and corresponding methods of the present disclosure involve an electrosurgical generator, sensing circuitry, and a controller. The electrosurgical generator includes a radio frequency (RF) output stage that supplies power to tissue. The sensing circuitry measures impedance of tissue. The controller controls the power supplied from the RF output stage to track a nonlinear power curve until the power supplied from the RF output stage has reached a predetermined peak power of the nonlinear power curve. The controller further determines whether a tissue reaction has occurred based on impedance measured by the sensing circuitry and controls the power supplied from the RF output stage during a cooling phase if the controller determines that a tissue reaction has occurred. The controller may further control the power supplied from the RF output stage to track a linear power curve.
    Type: Grant
    Filed: December 17, 2020
    Date of Patent: June 29, 2021
    Assignee: Covidien LP
    Inventors: Jennifer R. McHenry, Alexander M. Waskiewicz, Anthony D. Ricke, Rebecca J. Coulson, Jessica E. C. Olson
  • Patent number: 10993733
    Abstract: A forceps includes an end effector assembly having first and second jaw members, each including a proximal flange and a distal jaw body defining a tissue-treating surface. The second jaw member is both proximally offset and spaced-apart from the first jaw member. One or more resilient bands extends between and interconnects the proximal flanges of the jaw members. The resilient band(s) is configured to bias the first and second jaw members towards an open position. The resilient band(s) is configured to flex in response to distal translation of the second jaw member relative to the first jaw member to thereby move the second jaw member relative to the first jaw member to a closed position for grasping tissue between the tissue-treating surfaces thereof. In the closed position, the second jaw member is disposed in an aligned orientation and is approximated relative to the first jaw member.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: May 4, 2021
    Assignee: Covidien LP
    Inventor: Jason G. Weihe
  • Patent number: 10987123
    Abstract: Various example embodiments described herein are directed to articulating surgical instruments for treating tissue comprising an end effector and a shaft extending proximally from the end effector along a longitudinal axis. In certain embodiments, the shaft comprises a plurality of transverse spacer members as well as first and second rotatable members extending through at least a portion of the plurality of transverse spacer members. The first and second rotatable members may both be biased away from the longitudinal axis such that their respective directions of bias vary with rotation of the first rotatable member. When the respective directions of bias of the first and second rotatable members oppose one another, the shaft may be substantially straight. When the respective directions of bias of the first and second rotatable members are aligned with one another, the shaft may articulate away from the longitudinal axis in the direction of the alignment.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: April 27, 2021
    Assignee: Ethicon LLC
    Inventors: Michael P. Weir, Joseph B. Kraimer, Frederick E. Shelton, IV, Stephen J. Balek, Zhifan F. Huang, Sora Rhee, Carl J. Draginoff, Jr.
  • Patent number: 10881446
    Abstract: Surgical tools are provided herein that have a housing and an elongate tool shaft extending from the housing with an end effector on a distal end thereof. The end effectors deliver electrical energy onto and/or through tissue, and the end effectors are configured to display at least one location of one or more paths of the electrical energy through the end effector.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: January 5, 2021
    Assignee: Ethicon LLC
    Inventor: Geoffrey S. Strobl
  • Patent number: 10881450
    Abstract: A surgical instrument having a handle, elongate shaft protruding from handle and end-effector located at end of shaft is described. To allow for rotation of the end-effector the shaft is connected to a rotation wheel mounted on handle, towards rearward end of handle proximal to the user. The rotation wheel is in the form of a thumbwheel, having an ergonomically designed shape that tapers from distal direction to proximal direction, with angle of the taper matching angle of the outer surface of the handle. The outer tapered surface of the thumbwheel has a number of shaped cut-out or scalloped portions arranged around the outer circumference of the wheel, and arranged in use to receive the tip of a user's thumb to allow the user to rotate the wheel in order to set the rotational orientation of the end-effector. Such an arrangement provides a comfortable and easy to use instrument.
    Type: Grant
    Filed: January 12, 2017
    Date of Patent: January 5, 2021
    Assignee: GYRUS MEDICAL LIMITED
    Inventor: Marno Nagtegaal