Cutting Patents (Class 606/39)
  • Patent number: 10792062
    Abstract: A medical device includes a sheath, an shaft at least partially surrounded by the sheath, an end effector at a distal end of the shaft and movable between at least an open position and a closed position, and a handle. The handle includes a shaft advancement body, a channel body securely coupled to the sheath and selectively positionable with respect to the shaft advancement body, and a plunger securely coupled to the shaft and selectively positionable with respect to the channel body.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 6, 2020
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Michael S. H. Chu
  • Patent number: 10363429
    Abstract: The invention relates to a device for the treatment of free-form areas and zones of human or animal skin areas or plant surfaces by means of cold atmospheric-pressure plasma. The core of the device is a specific, preferably gas-permeable, electrode arrangement for generating a dielectrically impeded surface discharge where the earthed electrode is composed of electrically conductive textile material and the high-voltage electrode consists of a thin wire or electrically conductive thread which is sheathed with an insulting layer which has to meet specific requirements. On the basis of the present invention, it is possible to generate, in the area of diseased skin parts of the human body, in direct proximity to the skin surface or to wounds, a flat plasma for the treatment of the diseased areas which is acceptable in respect of the stress on the skin caused by temperature and electric potentials.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: July 30, 2019
    Assignee: Leibniz-Institut für Plasmaforschung und Technologie e.V.
    Inventors: Klaus-Dieter Weltmann, Ronny Brandenburg, Stephan Krafczyk, Manfred Stieber, Thomas Von Woedtke
  • Patent number: 10349999
    Abstract: Various embodiments are directed to methods for providing an electrosurgical signal to a patient using an electrosurgical system. A method may, for a first application period, apply the electrosurgical signal to first and second electrodes according to a first mode. In the first mode, the electrosurgical signal is limited to a first maximum power when the impedance between the first and second electrodes exceeds a first mode threshold. The method may also, for a second application period after the first application period, apply the electrosurgical signal according to a second mode. In the second mode, the electrosurgical signal is limited to a second mode maximum power when the impedance between the first and second electrodes exceeds a second mode threshold. The second maximum power may be greater than the first maximum power.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: July 16, 2019
    Assignee: Ethicon LLC
    Inventors: David C. Yates, Jeffrey D. Messerly, Mark A. Davison
  • Patent number: 10321949
    Abstract: Electrosurgical system with selective control of active and return electrodes. At least some of the illustrative embodiments are systems comprising an electrosurgical wand and an electrosurgical controller. The wand comprises a non-conductive outer surface, at least three electrodes disposed on a distal end of the wand, and at least three electrical leads extending from a proximal end of the wand (one electrical lead electrically coupled to each electrode). The controller comprises a voltage generator and a control circuit coupled between the voltage generator and the electrodes of the wand. The control circuit is configured to: selectively electrically couple the active terminal singly and in combination to the electrodes of the wand; and selectively electrically couple the return terminal singly and in combination to electrodes of the wand.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: June 18, 2019
    Assignee: ArthroCare Corporation
    Inventors: Hadar Cadouri, Philip M. Tetzlaff
  • Patent number: 10278521
    Abstract: System for preventing bacterial infections in needle trajectories. The system includes a percutaneous surgical instrument (1) percutaneously introducible into a patient's tissue (3) such as a biopsy needle, and having an outer surface made of an electrically conductive material; a contact electrode (4) applicable to the patient's skin (3a); a silver coating or element (P) arranged on or forming part of the instrument (1) to break down by electrochemical release when a current is applied thereto, releasing silver ions into its surroundings; and an electric current generator (2) arranged and configured for generating a current and inducing the temporary circulation thereof between the instrument (1) acting as an anode, the tissue (3) and the contact electrode (4) acting as a cathode, respectively, with a specific magnitude and duration for producing a massive and sudden release of silver ions for the purpose of preventing post-treatment bacterial infections.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: May 7, 2019
    Assignee: UNIVERSITAT POMPEU FABRA
    Inventors: Antonio Ivorra Cano, Quim Castellví Fernández
  • Patent number: 10251697
    Abstract: An electrosurgical resection instrument for applying to biological tissue radiofrequency electromagnetic energy has a protective hull comprising a shaped piece of dielectric material mounted to cover an underside of an instrument tip of the instrument. The protective hull acts as a shield to protect tissue that may lie under the instrument tip from damage during treatment. The instrument may be particularly useful in procedures performed in a gastrointestinal tract, where bowel perforation is a concern, or in the pancreas, where damage to the portal vein or the pancreatic duct may occur when a tumor or other abnormality is being resected, dissected or removed.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: April 9, 2019
    Assignee: Creo Medical Limited
    Inventors: Christopher Paul Hancock, Steven Morris, Duncan Fitzsimmons, Brian Saunders, Andrew Pacey, Malcolm White
  • Patent number: 10130418
    Abstract: The invention relates to ablation catheter electrodes that solve in part the problem of tissue charring during radiofrequency ablation. The electrode assemblies of the invention include passageways that lead from the inner lumen of the assemblies to the surface of the assemblies, wherein the passageways have a smooth conjunction with the outer surface. These smooth conjunctions comprise rounded edges or are chamfered. In the case of rounded edges, the rounded edges can have fixed radii of about 0.002? to about 0.008?.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: November 20, 2018
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Huisun Wang, Sacha Hall
  • Patent number: 10105177
    Abstract: An irrigated ablation catheter includes a shaft and an electrode assembly affixed to a distal end of the shaft. The distal electrode assembly includes a manifold and an ablation electrode affixed together and extending along a center axis. The electrode has a distal irrigation passageway extending therethrough to an opening at a distal tip of the electrode. The opening of the irrigation passageway is offset in distance from the center axis, and allows a thermal sensor such as a thermocouple to be located in a sensor cavity in the electrode on or near the center axis. One variation involves providing a pair of distal irrigation passageways through the electrode where both of the openings of the passageways are offset from the center axis. The thermal sensor in this variation is located in the sensor cavity substantially on the center axis.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: October 23, 2018
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Huisun Wang, Christopher J. Geurkink
  • Patent number: 9770281
    Abstract: An electrosurgical apparatus with a retractable blade for use in cold plasma applications, electrosurgical cutting and mechanical cutting is provided. The electrosurgical apparatus employs a tip of the retractable blade as a sharp conductive point to generate a plasma beam or discharge. When the blade is retracted within the electrosurgical apparatus, it is electrically energized while an inert gas flows over it, producing a cold plasma discharge. In the de-energized state, the blade is advanced and used as a traditional, mechanical surgical blade.
    Type: Grant
    Filed: June 22, 2015
    Date of Patent: September 26, 2017
    Assignee: Bovie Medical Corporation
    Inventors: Jeffrey C. Rencher, Gregory A. Konesky, Borislav S. Simeonov
  • Patent number: 9737355
    Abstract: Various embodiments are directed to electrosurgical systems for providing an electrosurgical signal to a patient. A control circuit may, for a first application period, apply the electrosurgical signal to first and second electrodes according to a first mode. In the first mode, the control circuit may limit the electrosurgical signal to a first maximum power when the impedance between the first and second electrodes exceeds a first mode threshold. The control circuit may also, for a second application period after the first application period, apply the electrosurgical signal according to a second mode. In the second mode, the control circuit may limit the electrosurgical signal to a second mode maximum power when the impedance between the first and second electrodes exceeds a second mode threshold. The second maximum power may be greater than the first maximum power.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: August 22, 2017
    Assignee: Ethicon LLC
    Inventors: David C. Yates, Jeffrey D. Messerly, Mark A. Davison
  • Patent number: 9610120
    Abstract: A high-frequency treatment tool for an endoscope includes: a sheath formed of a material having an insulation property; a shaft-shaped member formed of a material having conductivity and inserted to advance and retract in the sheath; and an electrode having a conduit line formed to jet forward a fluid supplied into the sheath, and connected to a distal end section of the shaft-shaped member. The electrode has an outer circumferential surface electrically connected to a contacted tissue to perform treatment, and an inner circumferential surface of the conduit line that faces the fluid when the fluid is supplied. An arithmetic average roughness of the outer circumferential surface is larger than an arithmetic average roughness of the inner circumferential surface, and the arithmetic average roughness of the inner circumferential surface is 0.1 ?m or less.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: April 4, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Fuminori Wake, Yuji Sakamoto
  • Patent number: 9603660
    Abstract: Systems for ablating tissue can include a pair of electrode assemblies. The electrode assemblies can automatically align on opposing sides of operative tissue due to magnetic interaction. One assembly can move automatically in response to the other assembly due to the magnetic interaction. Some systems are capable of cooling the electrode assemblies during ablation procedures.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: March 28, 2017
    Assignee: Intermountain Invention Management, LLC
    Inventors: John Richard Doty, Thomas Jared Bunch, Troy J. Orr
  • Patent number: 9526562
    Abstract: Provided is a high-frequency treatment tool including a cylindrical sheath, an electrode member that is made to protrude and be retracted with respect to a distal-end portion of the sheath, and a liquid-feeding unit for feeding a liquid toward the distal-end side inside a flow channel in the sheath, wherein a distal end of the electrode member is provided with a distal-end expanded portion that extends radially outward in a radiating manner and that has a base-end surface that is made to protrude and be retracted with respect to a distal-end portion of the sheath, wherein the sheath is provided with a restricting portion that restricts the movement of the electrode member toward the base-end side at a position at which a portion of the distal-end expanded portion is accommodated inside the sheath and an accommodating portion that can accommodate at least a portion of the distal-end expanded portion.
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: December 27, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Tetsuya Yamamoto, Fuminori Wake, Shunsuke Motosugi
  • Patent number: 9439715
    Abstract: An electrosurgical instrument is provided for the treatment of tissue, the instrument comprising an instrument shaft (10) having a longitudinal axis, and an electrode assembly at one end of the shaft. The electrode assembly comprises first and second active electrodes (11), (14) and at least one return electrode (25), the electrodes being electrically insulated one from another by means of one or more insulation members (12). The first and second active electrodes (11, 14) each have an exposed surface for treating tissue, the exposed surface (19) of the first active electrode being such as to treat tissue disposed laterally of the longitudinal axis at a first radial position with respect to the instrument shaft. The exposed surface (15) of the second active electrode is such as to treat tissue disposed laterally of the longitudinal axis at a second radial position with respect to the instrument shaft.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: September 13, 2016
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Christopher Charles Benn, Robert C. Humble, David W. Morris, Michael David Newton, Andrew John Ford
  • Patent number: 9232973
    Abstract: A bipolar snare including an elongated tubular electrically insulating sheath, a pair of elongated flexible electrically conductive wires disposed within the sheath, and an electrically insulating connector disposed at the distal ends of the wires mechanically connecting the distal ends of the wires to form a loop projecting from the distal end of the sheath. The wires are provided with electrical insulation covering all but a selected portion of each of the wires. The device also includes a guide member located within the sheath and forming compartments for each of the electrically conductive wires, the guide member being rotatable within the sheath. The guide member is also set back from the distal end of the sheath to an extent such that the whole of the loop including at least part of the connector is capable of being received within the sheath.
    Type: Grant
    Filed: November 10, 2011
    Date of Patent: January 12, 2016
    Assignee: GYRUS MEDICAL LIMITED
    Inventors: Andrew Edward Jenkins, Kerry Simpson Briggs, Philip John Warren
  • Patent number: 9186199
    Abstract: The invention concerns a high frequency surgery apparatus for cutting and/or coagulating biological tissue and methods of operating same. The high frequency surgery apparatus includes at least one high frequency generator which in operation forms a high frequency circuit with the tissue to be treated, with the production of an arc, and at least one measuring and calculating device which is connected for signal transmission to the high frequency circuit and which is adapted in operation to ascertain both a DC voltage in the high frequency circuit and also the amplitudes of at least one even and at least one odd harmonic of a fundamental frequency of the high frequency generator and to form a first tissue parameter representative of the kind of tissue to be treated from the relationship of the sum of the amplitudes of the even and the odd harmonics to the DC voltage and to output a tissue signal dependent on the first tissue parameter for subsequent processing.
    Type: Grant
    Filed: July 17, 2008
    Date of Patent: November 17, 2015
    Assignee: OLYMPUS WINTER & IBE GMBH
    Inventors: Timo Strauss, Godo Strauss, Uwe Fischer
  • Patent number: 9089312
    Abstract: A device for a biopsy procedure using a probe is provided. The probe, such as a needle, has an inner bore. A tamponade device is provided having a stem portion and an expandable portion, the tamponade device is sized to fit within the probe inner bore. The expandable portion is changeable between a first size and a second size with the second size being larger than the first size. A sheath disposed about the expandable portion, the sheath sized to fit within the probe inner bore. The expandable portion applies direct pressure to a hemorrhage location when inflated to the second size.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: July 28, 2015
    Assignee: WESTERN NEW ENGLAND UNIVERSITY
    Inventors: Steven Michael Schonholz, Robert T. T. Gettens, Allison Waller
  • Publication number: 20150126994
    Abstract: A puncture tool includes: a needle tube internally including a channel; an opening portion arranged at a proximal end portion of a needle tube turning operation portion; a conical shape portion to be punctured into a subject, the conical shape portion being arranged at a distal end portion of the needle tube; an opening portion arranged on a proximal end side of the conical shape portion and communicating with the channel; a blade capable of being inserted through the channel of the needle tube and capable of causing a cutting portion to project from the opening portion when being inserted through the channel; and a connector for electrically connecting the conical shape portion and a high frequency power supply device.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Shoichi MATSUI, Kenichi NISHINA, Kunihide KAJI
  • Publication number: 20150119873
    Abstract: A system for controlling an electrosurgical electrode of a medical device includes a hand-held electrosurgical electrode having cutting probe. A return electrode is positioned remote from the electrosurgical electrode. An RF generator is coupled to the electrosurgical electrode and to the return electrode, and includes an RF amplifier. The RF generator generates an RF signal at a first RF power level for tissue cutting and generates the RF signal at a second RF power level greater than the first RF power level to initiate tissue cutting. A sensor monitors an electrical characteristic associated with the electrosurgical electrode. A controller coupled to the RF amplifier maintains a desired RF power output and a desired RF duty cycle at the first RF power level by adjusting a DC input voltage applied to an output stage of the RF amplifier based on the monitored electrical characteristic associated with the electrosurgical electrode.
    Type: Application
    Filed: November 5, 2014
    Publication date: April 30, 2015
    Inventors: Derek J. Daw, James H. Dabney
  • Publication number: 20150119874
    Abstract: A guard for use with a surgical cutting system. The guard includes a housing and wiring. The housing defines a longitudinal passageway, and is configured for releasable attachment to an instrument handpiece. The wiring is coupled to the housing and includes an electrically conductive wire and an insulative material. The wire defines opposing, first and second ends, with the first end being positioned within the passageway. The insulative material covers the wire apart from the first end such that the first end of the wire is exposed within the passageway. The first end of the wire establishes an electrical connection with a cutting tool shank upon placement within the passageway.
    Type: Application
    Filed: December 29, 2014
    Publication date: April 30, 2015
    Inventors: William Charles Brunnett, Kevin Lee McFarlin, Benjamin Morris Rubin, Robert Vaccaro
  • Patent number: 9017327
    Abstract: A medical instrument having an elongate frame with proximal and distal ends, an operating assembly at a proximal region of the frame, and a working assembly at a distal region of the frame. The working assembly has a cantilevered tip with a free end and is reconfigurable by an operator through the operating assembly by selectively reorienting the tip relative to: a) the frame; and b) a reference plane extending through the frame orthogonally to the central axis at a location on the frame spaced axially from the working assembly toward the operating assembly. The tip in one position projects in a first axial direction toward the reference plane. The working assembly has at least one cautery component that: a) contacts a human body part at the cutting location; and b) is operable to generate a current that dissects a contacted portion of the human body part.
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: April 28, 2015
    Assignee: Stewart and Stien Enterprises, LLC
    Inventors: Karl Stien, Nathaniel J. Stewart
  • Publication number: 20150112325
    Abstract: The present invention provides an energy based dissection device that automatically provides a nerve protection function. Specifically, the present invention operatively connects nerve monitoring technology and energy based dissection technology to provide a device that provides energy based dissection functionality that cannot operate, or operates differently, upon receipt of real time information from the nerve monitoring functionality that nerve damage may be imminent in the absence of such safety shutdown. The present invention also creates a real-time graphical display of the nerve, including size and location relative to the energy based dissection device to enable the operator to safely and accurately avoid damaging the nerve. Accordingly, the present invention provides a surgical device that removes human error and reaction time issues which prevent unintended dissection and concomitant nerve damage.
    Type: Application
    Filed: October 18, 2013
    Publication date: April 23, 2015
    Applicant: Atlantic Health System, Inc., a NJ non-profit corporation
    Inventor: Eric D. Whitman
  • Publication number: 20150105701
    Abstract: The invention provides a therapeutic system comprising: a console, wherein the console comprises a controller and an energy generator; a therapeutic device comprising: an operational head configured for transmitting the energy output from to a biological tissue; and a memory device comprising control instructions, wherein said control instructions comprise instructions for controlling the console; a reversible memory operable linkage linking the memory device to the controller; and a reversible connector configured for operably linking the energy generator to the operational head. Optionally, the energy generator is a generator of ablation energy or heat energy (e.g. RF generator) and the control instructions comprise instructions for controlling the output of the energy generator. Optionally, the control instructions comprise one or more parameters of energy output or an algorithm configured for controlling the energy output.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 16, 2015
    Inventors: Carl Mayer, John Ellenz
  • Patent number: 8998938
    Abstract: A fluid ejection device includes: a fluid chamber whose capacity is variable; an inlet flow path and an outlet flow path communicating with the fluid chamber; a capacity changing unit which changes the capacity of the fluid chamber; a fluid supplying unit which supplies fluid to the inlet flow path; a fluid ejection opening disposed at an end of the outlet flow path opposite to an end communicating with the fluid chamber; a vibrating unit which vibrates a component in the vicinity of the fluid ejection opening; a vibration detecting unit which detects the level of vibration of the component in the vicinity of the fluid ejection opening; and an operation control unit which controls operation of the capacity changing unit based on the level of the vibration detected by the vibration detecting unit.
    Type: Grant
    Filed: September 28, 2009
    Date of Patent: April 7, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Seto, Kazuo Kawasumi, Yasuyoshi Hama, Hideki Kojima, Yasuhiro Ono
  • Publication number: 20150094712
    Abstract: Electrosurgical fibroid ablation systems and methods utilize a probe having at least two electrodes to perform bipolar ablation. The probe is inserted into a uterine fibroid so as to enter the fibroid along the major-axis direction of an ellipsoidal fibroid (a direction that is substantially parallel to the uterine wall). Inserting the probe in this direction facilitates ablation of the fibroid with a single probe penetration because the area of ablation tends to progress within a volume having an ellipsoidal shape that is aligned with the ellipsoidal shape of the fibroid. Furthermore, any scar left by the procedure tends to extend in a direction that is parallel to the uterine wall, and thus is less likely to propagate and cause rupture of the uterine wall during pregnancy.
    Type: Application
    Filed: September 30, 2013
    Publication date: April 2, 2015
    Applicant: GYRUS ACMI, INC.
    Inventors: Nikhil M. MURDESHWAR, Jeffrey J. NELSON
  • Publication number: 20150088123
    Abstract: A liquid ejecting apparatus for medical treatment includes a liquid ejecting scalpel that ejects a liquid, an ultrasonic scalpel that generates an ultrasonic wave, an inner body that accommodates the liquid ejecting scalpel and the ultrasonic scalpel and includes a first opening portion allowing a distal end portion of the liquid ejecting scalpel or a distal end portion of the ultrasonic scalpel to protrude therethrough, an outer body that accommodates the inner body and includes a second opening portion at a position corresponding to the first opening portion, a suctioning path that is made by an aperture formed between the inner body and the outer body, and a manipulation section that is arranged in the outer body and selectively causes the distal end portion of the liquid ejecting scalpel or the distal end portion of the ultrasonic scalpel to protrude through the first opening portion.
    Type: Application
    Filed: September 19, 2014
    Publication date: March 26, 2015
    Inventors: Hirokazu SEKINO, Koichiro MIYAZAKI
  • Patent number: 8974448
    Abstract: The tissue cutting device comprises an elongated assembly including both an outer sleeve and an inner sleeve. The outer sleeve has a tissue-receiving window, and the inner sleeve has a distal end which cuts tissue as the inner sleeve is advanced past the window. The tissue is received into a lumen of the inner sleeve, and the inner sleeve lumen is typically enlarged in a proximal direction to reduce the tendency of resected tissue to lodge therein. The tissue displacement member is optionally provided at a distal end of the outer sleeve to further aid in dislodging tissue which becomes captured in a distal end of the inner sleeve of the lumen.
    Type: Grant
    Filed: June 22, 2012
    Date of Patent: March 10, 2015
    Assignee: Iogyn, Inc.
    Inventors: Aaron Germain, Kyle Klein, Benedek Orczy-Timko, Michael D. Walker, John H. Shadduck, Csaba Truckai, Balazs Lesko
  • Publication number: 20150066018
    Abstract: Bipolar medical instrument for cutting tissue under the action of high-frequency current, wherein the instrument extends along a longitudinal direction from a proximal end to a distal end, wherein an active electrode and a neutral electrode, adjacent to the active electrode, are arranged at the distal end, and wherein the neutral electrode has a curved profile with a first curvature and a second curvature, wherein the respective directions of the curvatures are different. An electrosurgical system is also disclosed, with a high-frequency generator, and with one such bipolar medical instrument, which can be attached to the high-frequency generator.
    Type: Application
    Filed: August 28, 2014
    Publication date: March 5, 2015
    Inventors: Frank Doll, Martin Hahn, Uwe Wittke
  • Patent number: 8968295
    Abstract: A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal generated by the power supply and a feedback signal generated in response to the application of energy to tissue. A discharge circuit is configured to control the discharge of the output of the power supply to an inductive load disposed in parallel with the output of the power supply based on the comparison between the output signal and the feedback signal. The discharge circuit provides a rapid response and time rate control of the delivered electrosurgical energy by controlling the power supply and delivered RF energy in real time, based on a feedback signal generated in response to the application of energy to tissue.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: March 3, 2015
    Assignee: Covidien LP
    Inventor: James H. Orszulak
  • Publication number: 20150057570
    Abstract: Medical devices and systems, and methods of their use, are disclosed having configurations suitable for obtaining biological tissue samples suitable for analysis, such as biopsy, while minimizing undesirable collateral damage to surrounding tissue or minimizing air leaks. Certain disclosed medical systems provide for obtaining biological tissue samples, while preserving organ functionality.
    Type: Application
    Filed: May 29, 2014
    Publication date: February 26, 2015
    Applicant: SPINE VIEW, INC.
    Inventors: Singfatt Chin, Murali Dharan, Jefferey Wayne Etter
  • Publication number: 20150051598
    Abstract: A surgical instrument includes one or more electrically-conductive plates adapted to connect to a source of energy for supplying energy to tissue to treat tissue, a temperature sensing element, and a thermal spread control assembly coupled to the temperature sensing element. The thermal spread control assembly is configured to determine a flow rate of heat energy across the temperature sensing element and to control the energy applied to the electrically-conductive plate and/or control active cooling of the temperature sensing element in accordance with the determined flow rate of heat energy.
    Type: Application
    Filed: April 15, 2014
    Publication date: February 19, 2015
    Applicant: COVIDIEN LP
    Inventors: JAMES H. ORSZULAK, J. BRUCE DUNNE
  • Publication number: 20150051595
    Abstract: Methods, systems, and devices for providing a denervating energy treatment to the tissue of the pulmonary vein and antrum region of the left atrium utilizing a catheter-based structure having one or more energy delivery surfaces. In some instances energy delivery surfaces are arranged with a circumferential and axial offset relative to one another. A pattern of individual lesions loosely approximating a helix, or other staggered pattern, or roughly circumferential are placed so as to provide a pattern which covers substantially the circumference of the treated area while avoiding stenosis. Denervating energy is applied by modulation of the energy delivery surfaces using an energy source integrated with a controller and control algorithm. In some instances feedback is used in a control algorithm for energy modulation. Energy sources are radiofrequency, ultrasound, and cryogenic.
    Type: Application
    Filed: August 12, 2014
    Publication date: February 19, 2015
    Inventor: James Margolis
  • Patent number: 8956347
    Abstract: A method and apparatus include determining a value of a parameter associated with operation of an electrosurgical probe having a particular probe design, and determining whether the value of the parameter is within a range of values that has been predetermined for the particular probe design to indicate that the probe is treating tissue in a desired manner. Power is delivered to the probe according to an algorithm based upon a determination that the value of the parameter is outside the range of values The algorithm delivers power in a pulsed profile including portions of low power and portions of high power. In one embodiment, the tissue treatment is ablation, the parameter is impedance, and the method limits tissue necrosis to less than 200 microns. In another embodiment, the tissue treatment is shrinkage, the parameter is temperature, and the method limits power delivery when the probe is not shrinking tissue.
    Type: Grant
    Filed: November 26, 2013
    Date of Patent: February 17, 2015
    Assignee: Smith & Nephew, Inc.
    Inventors: Douglas M. Lorang, Matthew E. Mitchell, Karen Drucker, Kobi Iki
  • Patent number: 8958887
    Abstract: A biopsy needle (80) having a longitudinal channel (84) formed within an inner conductor (86) of a coaxial antenna is disclosed. The coaxial antenna terminates in a rigid insertion tip (82) e.g. a ceramic cone that is insertable into biological tissue. Microwave energy (e.g. having a frequency of 1 to 100 GHz) delivered to the coaxial antenna is emitted at the insertion tip. The insertion tip may be arranged to match the impedance of the coaxial antenna to a predetermined tissue impedance. The emitted radiation can be used to measure properties of or treat (e.g. ablate) tissue at the insertion tip. Needle biopsy apparatus is also disclosed, in which a microwave energy is controllably delivered to a needle from a microwave generator. The apparatus may include an impedance tuner to dynamically match the impedance of the needle with tissue at the insertion tip.
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: February 17, 2015
    Assignee: Creo Medical Limited
    Inventor: Christopher P. Hancock
  • Publication number: 20150018815
    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: Application
    Filed: July 8, 2014
    Publication date: January 15, 2015
    Inventors: JOE D. SARTOR, ARLEN K. WARD
  • Publication number: 20140358141
    Abstract: An electrosurgical pencil for cutting tissue during surgery by application of electrical energy supplied from a generator. A tube is provided for evacuation of smoke from the site of surgery. To improve flexibility and reduce the stiffness of the tube while maintaining generally the shape and ability of the tube to conduct smoke from the site, the tube comprises a polymer film, herein referred to as sheath stretched by at least one reinforcement element.
    Type: Application
    Filed: September 12, 2012
    Publication date: December 4, 2014
    Inventors: Jesper Schantz Simonsen, Niels Kornerup
  • Patent number: 8890511
    Abstract: A system for targeting an operation site includes an identifier having an electromagnetic field generator configured to produce electromagnetic fields. The system includes an implement that includes a handle, a blade portion, and an electromagnetic field sensor coupled to the blade portion. The electromagnetic field sensor is configured to produce a signal responsive to electromagnetic fields produced by the electromagnetic field generator. The system includes a control unit configured to access information indicating a position of the electromagnetic field sensor relative to the operation site, receive a signal from the electromagnetic field sensor that is indicative of a position of a tool relative to the electromagnetic field sensor, and determine a position of the tool relative to an operation site based on the received signal and the position of the electromagnetic field sensor relative to the operation site.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: November 18, 2014
    Assignee: Smith & Nephew, Inc.
    Inventor: Kevin Wayne Belew
  • Patent number: 8882760
    Abstract: A medical device system and method provide an RF electrosurgical generator coupled to an electrosurgical electrode via a patient box disposed in close proximity to the patient. An RF signal is delivered from the generator to the patient box where signal power is increased and the RF signal delivered to the electrosurgical electrode. The patient box is coupled to the electrosurgical electrode by a short cable capable of carrying an HV, high frequency 5 MHz signal without leakage. An electrical characteristic associated with the electrosurgical electrode is monitored and a desired RF power output and duty cycle maintained by adjusting DC input voltage applied to an RF amplifier, responsive to the monitoring. The system determines when the electrosurgical cutting electrode has started cutting and switches from a start mode to a run mode having a different RF duty cycle and a reduced RF power output controlled by a servo system.
    Type: Grant
    Filed: August 27, 2008
    Date of Patent: November 11, 2014
    Assignee: SenoRx, Inc.
    Inventors: Derek Daw, James Huntington Dabney
  • Publication number: 20140323813
    Abstract: A biological tissue cutting and fluid aspiration system provides a plurality of surgical instruments operable independent of an external control console. In some embodiments, each surgical instrument may include all sensors and controls directly applicable to the surgical instrument, and may be used independently. In some embodiments, instruments communicate status information to each other, and adjust operating parameters based on the communications.
    Type: Application
    Filed: November 27, 2013
    Publication date: October 30, 2014
    Applicant: DOHENY EYE INSTITUTE
    Inventors: Mark Humayun, Charles DeBoer, Ralph Kerns, Matthew McCormick, Prashant Bhadri, Lawrence Chong
  • Patent number: 8864757
    Abstract: A contact sensing assembly including a catheter including an electrode having a base portion mounted adjacent a head portion of the catheter body. A sensor is disposed adjacent the base portion for measuring compression or tensile forces applied to an electrode tip portion, and includes a predetermined sensitivity. The base and head portions include predetermined rigidity so that forces applied to the electrode tip portion are determinable as a function of the sensitivity and a sensor output. A contact sensing assembly also includes an electrode pipe operatively connected to the catheter body for movement and bending with the catheter body, and an electrode wire disposed in the electrode pipe and including insulation. A change in capacitance resulting from movement of the electrode wire toward the electrode pipe or contact of the electrode wire with the electrode pipe during bending of the catheter correlates to a force applied to the catheter.
    Type: Grant
    Filed: December 31, 2008
    Date of Patent: October 21, 2014
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Gleb V. Klimovitch, John W. Sliwa
  • Publication number: 20140296737
    Abstract: A method for determining a desired location at which to apply a neural therapy. An array of electrodes is positioned proximal to neural tissue. A stimulus is applied from the array which evokes a neural compound action potential response in the neural tissue proximal to the array. A plurality of electrodes of the array simultaneously obtain respective measurements of the neural compound action potential response. From the measurements of the neural compound action potential response a desired location for a neural therapy is determined.
    Type: Application
    Filed: May 11, 2012
    Publication date: October 2, 2014
    Inventors: John Louis Parker, Dean Michael Karantonis
  • Patent number: 8845616
    Abstract: A suction apparatus evacuates the surgical smoke. For example, the suction apparatus may be arranged adjacent to an electrocautery electrode, which may generate smoke during operation, for evacuating smoke from a surgical site. The suction apparatus may have a ring manifold having an inner perimeter for receiving the surgical instrument. A plurality of suction intake ports may be arranged about the outer perimeter of the ring manifold for evacuating smoke that may be generated by the surgical instrument.
    Type: Grant
    Filed: February 4, 2011
    Date of Patent: September 30, 2014
    Assignee: Integrated Surgical LLC
    Inventors: Noah Mark Minskoff, Nathan Andrew Terry
  • Publication number: 20140276774
    Abstract: Embodiments of the present disclosure include a method for treating tissue. The method may include delivering a medical device through a channel of an endoscopic device, wherein the medical device may include an elongate member, a cap coupled to a distal end of the elongate member and having a cavity, and an electrically-conductive tool extending into the cavity of the cap. The method may also include extending a portion of the medical device out of the channel of the endoscopic device and to the tissue, drawing a portion of the tissue into the cavity of the cap, electrically activating the tool to pierce the portion of the tissue, and cutting the tissue by moving the medical device along a plane of the tissue.
    Type: Application
    Filed: March 13, 2014
    Publication date: September 18, 2014
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventors: Samuel RAYBIN, Paul SMITH, Naroun SUON
  • Publication number: 20140276775
    Abstract: A method includes assessing tumor margins and discriminating between tumor and non-tumor tissues by analyzing the compositional make-up of smoke produced during cautery resection of tissues.
    Type: Application
    Filed: June 2, 2014
    Publication date: September 18, 2014
    Applicant: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventors: Tobias Funk, Kate LeeAnn Bechtel, Joseph Anthony Heanue, Amish Parashar
  • Publication number: 20140236143
    Abstract: An electrode assembly is provided. The electrode assembly includes a proximal end that is adapted to connect to an electrosurgical instrument including a housing defining a longitudinal axis therethrough and an electrosurgical energy source. A distal end includes a cutting electrode having a loop configuration configured to cut tissue. The distal end includes a return electrode operably disposed adjacent the cutting electrode. A dielectric shield is operably disposed between the cutting electrode and return electrode. The dielectric shield extending distally past the cutting electrode to hinder current flow to the return electrode when the dielectric shield, cutting electrode and return electrode are submersed in a conductive solution and the cutting electrode is energized, thereby concentrating current density at the cutting electrode.
    Type: Application
    Filed: December 20, 2013
    Publication date: August 21, 2014
    Applicant: COVIDIEN LP
    Inventor: ARLEN K. WARD
  • Publication number: 20140207134
    Abstract: In a high-frequency knife, a through hole that extends in the direction of an axis is formed on a radial outer side of a second electrode in a larger-diameter portion, and a distance increasing portion increases a creeping distance along an external surface of the larger-diameter portion between an outer peripheral surface of the second electrode exposed to the outside and an opening of the through hole on a proximal end side.
    Type: Application
    Filed: January 16, 2014
    Publication date: July 24, 2014
    Inventor: Fuminori WAKE
  • Patent number: 8784416
    Abstract: An improved electrosurgical scalpel, with light emission, for generating electrical signals intended for applications to the body of a patient via an electrosurgical electrode is provided. An electrosurgical scalpel includes a handle with a receptacle portion of a conductive member for mounting and retaining an electrode blade, a light source with a power source encapsulated within the handle and a means to direct the light emitted outwardly towards the electrode tip. Operation of a switch on the handle to an on position serves to complete a circuit, activating the light source and, thereby directing light through an opening or upper portion and out from the first end of the handle towards the distal end of the electrode blade.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: July 22, 2014
    Inventor: Carl Balog
  • Patent number: 8764741
    Abstract: A high frequency electrosurgical power generator configured to produce electrical power at a frequency of about 1 to about 14 MHz and preferably having an essentially sinusoidal waveform with a voltage level up to 1,000 Vrms, and a current level up to 5 Amps. The output of the high frequency electrosurgical power generator is connected to an electrosurgical tool configured to receive the voltage and current produced by the electrosurgical power generator and deliver the voltage and current to an electrosurgical site. The output of the electrosurgical generator preferably is an essentially sinusoid waveform with a frequency between about 3 MHz and about 8 MHz, up to about 700 volts rms, up to about 2 amps, with a total power of up to 1,000 watts.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: July 1, 2014
    Assignee: Senorx, Inc.
    Inventors: James Huntington Dabney, Richard L. Quick, Conrad Sawicz, Paul Lubock, Dan Kussman
  • Patent number: 8758349
    Abstract: Methods and devices that displace bone or other hard tissue to create a cavity in the tissue. Where such methods and devices rely on a driving mechanism for providing moving of the device to form a profile that improves displacement of the tissue. These methods and devices also allow for creating a path or cavity in bone for insertion of bone cement or other filler to treat a fracture or other condition in the bone. The features relating to the methods and devices described herein can be applied in any region of bone or hard tissue where the tissue or bone is displaced to define a bore or cavity instead of being extracted from the body such as during a drilling or ablation procedure.
    Type: Grant
    Filed: October 13, 2009
    Date of Patent: June 24, 2014
    Assignee: Dfine, Inc.
    Inventors: Aaron Germain, Csaba Truckai
  • Publication number: 20140171940
    Abstract: The present disclosure relates to an end effector assembly for use with an electrosurgical instrument. The end effector assembly includes a pair of opposing first and second jaw members and a first electrically conductive cutting plate. The pair of opposing first and second jaw members is movable to cooperatively grasp tissue. Each of the jaw members includes a tissue contacting plate that is disposed thereon and has a longitudinal channel that is defined therealong. The first electrically conductive cutting plate includes a cutting element that extends along the first electrically conductive cutting plate and into the longitudinal channel of the first jaw member to engage and electrosurgically sever tissue upon activation thereof.
    Type: Application
    Filed: February 25, 2014
    Publication date: June 19, 2014
    Applicant: COVIDIEN LP
    Inventor: ARLAN J. RESCHKE