Endoscopic Patents (Class 606/46)
  • Patent number: 8142445
    Abstract: A medical device includes an elongate member having a plurality of flexibility features and a basket having a plurality of legs. The elongate member and the basket are formed from a single piece of a material. The flexibility features are formed by removing first portions of the material to increase flexibility of the elongate member. The legs are formed by removing longitudinal portions of the material.
    Type: Grant
    Filed: May 5, 2005
    Date of Patent: March 27, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: James A. Teague
  • Publication number: 20120059373
    Abstract: A high-frequency treatment tool (1) includes an operating wire (12) having a treatment part (10) including a treatment electrode; a first tube (23) formed from an insulating material, in which the operating wire (12) for enabling the treatment part (10) to protrude and recede is inserted; and a second tube (21) having a passive electrode (22) at a distal end, in which inserted the first tube (23) such as to cover an inner peripheral face of the passive electrode (22) is inserted. An engagement part (25) and an engaged part (22C) that can engage with each other are formed in the first tube (23) and the passive electrode (22), and the engagement of the engagement part (25) with the engaged part (22C) restricts the relative movement of a distal-end part of the first tube (23) to a proximal-end side of the first tube (23) with respect to the passive electrode (22).
    Type: Application
    Filed: September 1, 2011
    Publication date: March 8, 2012
    Applicant: OLYMPUS MEDICAL SYSTEMS CORP.
    Inventors: Keita SUZUKI, Hideki FUJII
  • Publication number: 20120053576
    Abstract: Tissue ablation probes, systems, and methods are provided for treating tissue (e.g., a tumor). The probe comprises an inner probe shaft, and an outer probe shaft disposed around the inner probe shaft. The outer probe shaft has a distal portion fixably mounted to the inner probe shaft, and a proximal portion rotatably mounted to the inner probe shaft. The probe further comprises a coiled ablation electrode disposed between the proximal portion and the distal portion. The electrode is configured for unwinding when the proximal portion rotates about the inner probe shaft in one direction, thereby placing the electrode in a radially expanded geometry, and configured for winding when the proximal portion rotates about the inner probe shaft in another opposite direction, thereby placing the electrode in a radially collapsed geometry.
    Type: Application
    Filed: July 19, 2011
    Publication date: March 1, 2012
    Applicant: BOSTON SCIENTIFIC SCIMED, INC.
    Inventor: Robert C. Thistle
  • Publication number: 20120035607
    Abstract: An endoscopic surgical instrument including a fluid jet device and an electrode device. The fluid jet device includes a pipe section with a nozzle on one distal end for a dissection and/or a needleless injection by means of a fluid and the electrode device is for cutting and/or coagulating tissue, the pipe section forming the electrode device. The surgical instrument further includes an insulating device attached to the distal end of the pipe section such a manner that the tissue can only be brought into electrically conductive contact with a peripheral region of the pipe section and not with the distal end of the pipe section.
    Type: Application
    Filed: March 26, 2010
    Publication date: February 9, 2012
    Inventor: Dietmar Karwei
  • Patent number: 8100905
    Abstract: Embodiments of the invention are directed to a method of excising tissue including injecting fluid into the submucosa to raise targeted tissue. A first electrode is positioned below the targeted tissue within the injected fluid and a second electrode is positioned adjacent a surface of the raised targeted tissue opposite the first electrode. Electrical current is applied between the first and second electrodes and the targeted tissue is excised with the second electrode.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: January 24, 2012
    Assignee: Boston Scientific Scimed, Inc.
    Inventor: Barry Weitzner
  • Patent number: 8100823
    Abstract: A reciprocating surgical file system for precisely removing bone and/or other tissue is described. The system allows a user to maneuver the system and navigate into hard-to-access sites under a direct vision mechanism. A transmission mechanism converts rotary motion from a motor into reciprocating motion and provides it to the surgical file for precision removal of bone or other tissue. A pulsatile pump mechanism is operatively coupled with the transmission mechanism and provides irrigating fluid to the surgical site.
    Type: Grant
    Filed: October 25, 2005
    Date of Patent: January 24, 2012
    Assignee: Surgitech, LLC
    Inventor: Richard J. Harp
  • Publication number: 20120004658
    Abstract: A bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly at a distal end thereof. The end effector assembly has a wheel assembly opposing a jaw member and having a pair of opposing wheels configured to facilitate movement of the wheel assembly relative to the jaw member. A drive rod is operably coupled at a proximal end to a movable handle and at a distal end to the wheel assembly. The movable handle is movable relative to a stationary handle to move the wheel assembly relative to the jaw member. At least one electrically conductive tissue sealing plate is disposed on each of the wheel assembly and the jaw member and is adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue held between the wheel assembly and the jaw member to effect a tissue seal.
    Type: Application
    Filed: September 9, 2011
    Publication date: January 5, 2012
    Applicant: TYCO Healthcare Group LP
    Inventor: Edward M. Chojin
  • Publication number: 20110301600
    Abstract: A forceps is provided and includes a housing having a shaft. An end effector assembly operatively connects to a distal end of the shaft and includes a pair of first and second jaw members. One or both of the first and second jaw members is movable relative to the other jaw member from a clamping position to an open position. A resilient member operably couples to the first and second jaw members. The resilient member is configured to bias the first and second jaw members in the clamping position and provide a closure force on tissue disposed therebetween.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 8, 2011
    Inventors: David M. Garrison, Jeffrey M. Roy, Duane E. Kerr
  • Publication number: 20110301599
    Abstract: An endoscopic forceps is provided. The endoscopic forceps includes a housing having a shaft that extends therefrom and defines a longitudinal axis therethrough. An end effector assembly operatively connects to a distal end of the shaft and has a movable jaw member and a non-movable jaw member. The movable jaw member has a substantially flexible medial portion and is movable relative to the non-movable jaw member from an initial position for positioning tissue therebetween, to a subsequent or clamping position wherein the movable and non-movable jaw members cooperate to grasp tissue therebetween. A drive assembly is operably coupled to the housing and includes a drive wire that operably couples to the movable jaw member. Proximal movement of the drive rod causes the medial portion of the movable jaw member to flex inwardly along a substantial length thereof and toward the non-movable jaw member.
    Type: Application
    Filed: June 2, 2010
    Publication date: December 8, 2011
    Inventors: Jeffrey M. Roy, Duane E. Kerr
  • Patent number: 8066700
    Abstract: An electrosurgical instrument includes a shaft, a flexible portion, and a head coupled to the shaft through the flexible portion and pivotably coupled to the flexible portion. The head includes a non-conductive surface and an electrically conductive surface. The flexible portion is configured to bias the non-conductive surface and the electrically conductive surface towards a tissue surface, such as cartilage. The non-conductive surface may include a material having a thermal conductivity less than or equal to about 30 W/m*K and/or a volume resistivity greater than or equal to about 1×1014 ohm*cm. The non-conductive surface may include a ceramic such as Macor® ceramic, ZTA ceramic, and/or 99.5% alumina ceramic.
    Type: Grant
    Filed: November 30, 2004
    Date of Patent: November 29, 2011
    Assignee: Smith & Nephew, Inc.
    Inventors: Kobi Iki, William M. Ambrisco, Douglas M. Lorang, Alan P. Gannon, Richard M. Ranalli, Mathew E. Mitchell, Marie Meyer, Mark Markel, Yan Lu, Ryland B. Edwards, III
  • Patent number: 8052683
    Abstract: An ablation and visualization device includes a shaft, at least one ablation element coupled to the distal end of the shaft, and a scope coupled to the shaft proximate the distal end. The scope may be a fiber optic endoscope, an infrared sensor, or an ultrasound sensor, and may be coupled to an output device to display imagery collected by the scope. The scope includes at least one aperture, which may be movable. An optical element, such as a lens or filter, may be positioned over the aperture. The scope may be positioned laterally relative to the ablation elements or in a plane substantially parallel to and spaced apart from the ablation elements. The scope may be positioned with the aperture positioned distally or proximally relative to the ablation elements. The scope may be slidably or rotatably coupled to the shaft.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: November 8, 2011
    Assignee: St. Jude Medical, Atrial Fibrillation Division, Inc.
    Inventors: Jonathan L. Podmore, Michael Holzbaur
  • Patent number: 8052681
    Abstract: A high-frequency incision instrument for an endoscope configured to project forward and retreat, through a forward end portion of a flexible over tube, a rod electrode disposed close thereto by remote operation from an operating unit connected to a proximal end portion of the over tube. The high-frequency incision instrument includes a fixed stopper and a movable stopper located close to a forward end portion of the over tube and to a proximal end portion of the rod electrode respectively, to be butted to each other to define a maximum projection length of the rod electrode from the forward end portion of the over tube. The movable stopper is axially movable with respect to the rod electrode, and the operating unit includes a stopper position adjuster that adjusts by remote operation a distance between a farthest end portion of the rod electrode and the movable stopper.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: November 8, 2011
    Assignee: Hoya Corporation
    Inventor: Noriyuki Sugita
  • Patent number: 8052682
    Abstract: A high-frequency incision instrument for an endoscope is provided with a flexible sheath, and a rod electrode remotely operated to protrude from/retract into the distal end portion of the sheath. A stationary stopper provided at the distal end portion of the sheath and a movable stopper provided at the proximal end portion of the rod electrode, the movable stopper contacting the stationary stopper to define a maximum protruding amount of the rod electrode from the distal end of the sheath. A proximal end portion of the rod electrode is screw-engaged with a member to which the movable stopper is formed, and the rod electrode is rotatable so that screw-engaged amount of the proximal end portion of the rod electrode with respect to the member is changed, thereby a distance between the tip end of the rod electrode and the movable stopper being adjustable.
    Type: Grant
    Filed: October 18, 2006
    Date of Patent: November 8, 2011
    Assignee: Hoya Corporation
    Inventor: Noriyuki Sugita
  • Patent number: 8048073
    Abstract: An endoscopic instrument includes: a knife; a wire having a distal end connected to the knife; a sheath around the wire; a main body having the freely rotative sheath fixed thereto; a slider fixed to the wire, slidable in an axial direction of the main body; a stopper projecting radially from the wire; a first-distal-regulation section in the sheath for regulating distal sliding movement of the wire by making contact with the stopper; and a second-distal-regulation section, provided distal to the first-distal-regulation section, for regulating sliding movement of the wire by making contact with the stopper, wherein the stopper is capable of moving between the first-distal-regulation section and the second-distal-regulation section by rotating the main body relative to the sheath around an axial line by predetermined angle, and at least two different projection lengths can be maintained by contacting the main body to the first-distal-regulation section or the second-distal-regulation section.
    Type: Grant
    Filed: May 5, 2008
    Date of Patent: November 1, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Tsutomu Nakamura, Keita Suzuki, Yuta Muyari, Shunsuke Motosugi
  • Publication number: 20110251609
    Abstract: Various embodiments are directed to a surgical instrument comprising, a shaft, and an end effector. The shaft may be coupled to the handle and may extend distally along a longitudinal axis. The end effector may be positioned at a distal end of the shaft and may comprise first and second jaw members and a reciprocating member. The first and second jaw members may define first and second longitudinal slots. The reciprocating member may be translatable distally and proximally parallel to the longitudinal axis and through the first and second longitudinal slots. A distal portion of the reciprocating member may define a blade.
    Type: Application
    Filed: April 12, 2010
    Publication date: October 13, 2011
    Applicant: Ethicon Endo-Surgery, Inc.
    Inventors: Gregory W. Johnson, Jeffrey S. Swayze, Jason L. Harris, Foster B. Stulen
  • Publication number: 20110245829
    Abstract: An endoscopic high-frequency treatment instrument includes a sheath, an operation wire, a first gripping part, a second gripping part and a first electrode. The sheath includes a front end, a rear end, and a longitudinal shaft. The operation wire is provided in the sheath so as to advance and retreat. The first gripping part is fixed to extend from the front end of the sheath along the longitudinal shaft. The second gripping part is connected to the operation wire and is moved about a base end thereof as a rotation center so as to approach and be separated from the first gripping part as the operation wire advances and retreats with respect to the sheath. The first electrode is provided on a surface of the first gripping part which faces the second gripping part.
    Type: Application
    Filed: March 19, 2011
    Publication date: October 6, 2011
    Applicant: FUJIFILM CORPORATION
    Inventor: Hidefumi AKAHANE
  • Publication number: 20110230881
    Abstract: An endoscopic surgical instrument includes an insertion section which is inserted into a body cavity, and a surgical section which is disposed on a tip of the insertion section and treats an object. The surgical section includes a body section, and a first electrode, a second electrode, and a third electrode which are disposed on the body section. The surgical section coagulates and cuts the object by using a combination of not less than two of the first electrode, the second electrode, and the third electrode.
    Type: Application
    Filed: March 16, 2010
    Publication date: September 22, 2011
    Inventors: Seiji Maeda, Hideyuki Kasahara, Ken Yamatani, Akihito Kano, Randal James Kadykowski, Lyne Madeleine Charron-Keller
  • Patent number: 8016823
    Abstract: This invention relates to surgical instruments for applying energy to tissue using a a vapor-to-liquid phase transition which delivers large amount of energy to the targeted tissue. In one embodiment, the system is configured for volumetric removal of tissue by means of high velocity ejection of a vapor media from a first vapor port proximate to soft tissue wherein the vapor-to-liquid phase change of the media applies energy to the tissue. The system provides a second port coupled to a suction source that cooperates with the first vapor port to suction tissue debris from the targeted site.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: September 13, 2011
    Assignee: Tsunami MedTech, LLC
    Inventor: John H. Shadduck
  • Patent number: 8007494
    Abstract: A surgical instrument and safety system comprises a safety shield having an inner surface and an outer surface, an active conductor having a first end adapted to connect with an electrode and a second end adapted to connect with an electrosurgical generator, the electrosurgical generator including contact quality monitoring circuitry, an insulator surrounding the active conductor and disposed between the active conductor and the safety shield, and a circuit interruption device in electrical communication with the safety shield. The circuit interruption device is adapted to couple to the contact quality monitoring circuitry of the electrosurgical generator and disable the flow of current to the electrode upon the occurrence of a fault condition.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: August 30, 2011
    Assignee: Encision, Inc.
    Inventors: Warren Taylor, Richard Smoot, Jr., Don R. Boyle, David W. Newton
  • Patent number: 8007469
    Abstract: A catheter system for positioning an instrument within a body that includes a hub defining a lumen therethrough for passage of the instrument toward the body. The catheter system also includes an elongate tubular member defining a lumen therethrough. The lumen of the elongate tubular member is in communication with the lumen of the hub for further passage of the instrument toward the body. The system also includes a slitter member that is coupled to the hub. The slitter member is disposed to slit the elongate tubular member as the elongate tubular member moves relative to the hub.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: August 30, 2011
    Assignee: Medtronic, Inc.
    Inventor: Niall Duffy
  • Patent number: 8002767
    Abstract: A handle used to control movement of a medical instrument. The medical instrument may be coupled to a robotic arm that is connected to a controller. The medical instrument may have a plurality of functions such as wrist locking and motion scaling. One of the functions may be selected through a graphical user interface operated by the end user. The handle may have a plurality of buttons. One of the buttons may allow the end user to control the selected function. For example, when wrist locking/unlocking is selected, depressing the button can toggle the medical instrument wrist between a locked state and an unlocked state.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: August 23, 2011
    Assignee: Intuitive Surgical Operations, Inc.
    Inventors: Dan Sanchez, Darrin Uecker
  • Patent number: 7963960
    Abstract: RF power is applied to a circular RF electrode cutting a side opening in a graft material of a main stent-graft in situ. As the side opening is formed by the applied RF power and the associated plasma discharge, the side opening is formed with a minimal application of force to the graft material. Further, the side opening is circular and has a fused edge.
    Type: Grant
    Filed: November 7, 2006
    Date of Patent: June 21, 2011
    Assignee: Medtronic Vascular, Inc.
    Inventors: Walter Bruszewski, Patrick Macaulay
  • Patent number: 7955329
    Abstract: A urological resectoscope (1) includes a tubular, metallic external stem (2) fitted with holes (3) in its distal end zone, a tubular insulating element (7, 27, 37, 47) being affixed distally to the external stem, further comprising a tubular internal stem (8) configured within the external stem and resting against it in sealing manner and an electrode support (13) longitudinally displaceable inside the internal stem and supporting a cutting loop (15) in the region of the insulating element (7, 27, 37, 47), the inside space of the internal stem (8) and the gap (12) between the stems (2, 8) being proximally connected to liquid hookups (10, 11), the insulating element (7, 27, 37, 47) being configured in longitudinally mutually overlapping manner within an affixation zone (6) and the insulating element (7, 27, 37, 47) exhibiting a wall thickness distally from the affixation zone (6) larger than the wall thickness of the external stem (2), wherein the inside diameter of the insulating element (27, 47) is the same
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: June 7, 2011
    Assignee: Olympus Winter & Ibe GmbH
    Inventor: Pieter Brommersma
  • Patent number: 7955328
    Abstract: Various devices and methods for dissecting and/or coagulating tissue are provided. In one embodiment, a surgical device is provided that includes an elongate member having proximal and distal ends, an energy emitter coupled to the distal end of the elongate member, and an insulating element that is disposed around the energy emitter. The insulating element can have an opening for receiving energy from the energy emitter, and the opening can be shaped to control a direction of energy emitted from the energy emitter.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: June 7, 2011
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Gary Long, Gregory J. Bakos, Omar Vakharia
  • Patent number: 7955637
    Abstract: An electrosurgical device including a reinforcing underlayment having a non-stick, anti-microbial coating. In one embodiment, the coating includes a non-stick material having anti-microbial particles interspersed in the non-stick material. This coating is applied to the surfaces of the electrode to minimize the build-up of charred tissue on the surfaces of the electrode. Also, the coating tends to kill harmful organisms residing on the surfaces of the electrode. In another embodiment, a primer coating is initially applied to the surfaces of the electrode. A plurality of anti-microbial particles are then applied to the primer coating layer and engage and are embedded in the primer coating layer. A top coat including a non-stick material is applied to the anti-microbial particle layer. In either embodiment, the coating layers applied to the surfaces of the electrode are cured to harden and adhere the layers to the electrode.
    Type: Grant
    Filed: May 7, 2010
    Date of Patent: June 7, 2011
    Assignee: Innovatech LLC
    Inventor: Bruce Nesbitt
  • Patent number: 7951142
    Abstract: An electrosurgical instrument for ablating cartilage while limiting collateral damage includes a non-conducting head with a small electrically conductive surface. The head of the instrument is coupled to a shaft by a flexible portion. The flexible portion biases the electrically conductive surface towards a tissue surface. The head is pivotably coupled to the shaft such that the electrically conductive surface is oriented substantially parallel to the tissue surface as the head slides across the tissue surface. A method of performing electrosurgery includes positioning the electrically conductive surface adjacent to the tissue surface, and sliding the shaft across the tissue surface with the head pivoting such that the electrically conductive surface is oriented substantially parallel to the tissue surface.
    Type: Grant
    Filed: January 30, 2004
    Date of Patent: May 31, 2011
    Assignee: Smith & Nephew, Inc.
    Inventors: Kobi Iki, William M. Ambrisco, Douglas M. Lorang, Alan P. Gannon, Richard M. Ranalli, Mathew E. Mitchell, Mark Markel, Ryland B. Edwards, III
  • Patent number: 7951146
    Abstract: An electrosurgical instrument for spinal procedures comprises an elongated tubular member configured to fit within and be extended down a standard sized cannula. The instrument comprises a proximal end including a handle for the surgeon and supplied with fittings for connection to a source of irrigation fluid and a source of suction. The distal end of the instrument has an active end comprising a slightly-flexible curved wire electrode that extends in the plane of the tubular member. Beyond the wire electrode is an exit port for irrigation fluid, and in front of the electrode is a receiving port for suction. The wire electrode is thus flanked in front by the exiting irrigation fluid and behind by the suction, with the result that fluid flow is drawn by the suction across the wire electrode creating pressure forces that direct removed tissue to the suction entrance and its removal from the surgical site.
    Type: Grant
    Filed: May 14, 2007
    Date of Patent: May 31, 2011
    Assignee: Elliquence, LLC
    Inventors: Alan G. Ellman, Jon C. Garito
  • Patent number: 7951069
    Abstract: Devices for enhancing minimally invasive cardiac surgery include a visualization device including an inflatable balloon at or near the distal end. Some visualization devices also include one or more lumens for allowing the introduction of one or more devices to a surgical site through the visualization device. Systems of the invention involve a visualization device which has at least one lumen for allowing introduction of an ablation device and/or other devices. A visualization device with an inflatable balloon may be positioned to create a space between a heart and pericardium when the balloon is inflated.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: May 31, 2011
    Assignee: ESTECH, Inc. (Endoscopic Technologies, Inc.
    Inventor: Arthur A. Bertolero
  • Patent number: 7935109
    Abstract: A multifunctional telescopic monopolar/bipolar electrosurgery pencil is disclosed for use with an electrosurgery unit (ESU). The monopolar/bipolar electrosurgery pencil includes a bipolar electrode having an insulator sandwiched between an active electrode and a return electrode wherein the bipolar electrode is connected to a handpiece capable of alternately effectuating cutting and coagulation with the bipolar electrode. The monopolar/bipolar electrosurgery pencil is capable of functioning as both a monopolar and bipolar device and can be used for open and closed laparoscopic and endoscopic procedures. Telescopic means for adjusting the length of the bipolar electrode is also provided as are means for smoke evacuation and suction/irrigation. The multifunctional telescopic monopolar/bipolar device can also be adapted for use with an ESU argon beam coagulator.
    Type: Grant
    Filed: August 17, 2006
    Date of Patent: May 3, 2011
    Inventor: Ioan Cosmescu
  • Patent number: 7935052
    Abstract: An endoscopic forceps for treating tissue includes a handle assembly having a elongated shaft extending therefrom that is movable relative to the handle assembly by an actuator. The forceps also includes an end effector assembly with first and second jaw members that are movable about a pivot for clamping tissue. Each of the jaw members include: an insulative housing having an electrically conductive, inwardly facing tissue contacting surface and a flange with a camming surface. The flange includes a spring-like tail that mounts at least partially within the distal end of the elongated shaft to bias the jaw members in an open configuration. A proximal portion of the spring-like tail is biased radially outward within the distal end of the elongated shaft. The actuator is movable to actuate the elongated shaft to cam the flanges to pivot the jaw members to clamp tissue.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: May 3, 2011
    Assignee: Covidien AG
    Inventor: Patrick L. Dumbauld
  • Publication number: 20110087222
    Abstract: Instruments and methods are provided for performing submucosal medical procedures in a desired area of the digestive tract using endoscopy. The instruments include a mucosal resection device, a tissue grasper and a snare. Systems include a combination of one or more of such instruments. Embodiments of various methods for performing the procedures are also provided.
    Type: Application
    Filed: October 12, 2010
    Publication date: April 14, 2011
    Inventors: David Miller, Todd Dalton, Mitch Gilkey
  • Patent number: 7922651
    Abstract: An ultrasonic treatment apparatus includes a sheath which has an opening at a distal-end thereof; an ultrasonic transducer which is connected to the sheath, the ultrasonic transducer being able to generate ultrasonic vibration which is of treatment energy; an ultrasonic power supply unit which supplies electric power for driving the ultrasonic transducer; a treatment unit which is connected to the ultrasonic transducer, the treatment unit transmitting the ultrasonic vibration to a living tissue; and a high-frequency power supply unit which supplies high-frequency current which is of the treatment energy to the treatment unit.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: April 12, 2011
    Assignees: Olympus Corporation, Olympus Medical Systems Corporation
    Inventors: Norihiro Yamada, Yoshio Onuki, Mitsumasa Okada, Akihito Sadamasa, Kiyoshi Miyake, Masayuki Iwasaka
  • Patent number: 7922717
    Abstract: A high-frequency treatment tool for an endoscope, having an electrically insulating flexible tube, an operating wire, a high-frequency electrode, which is provided at a distal end of the operating wire and configured to be protrusible and retractable from a distal end of the flexible tube in the axial direction of the flexible tube, and a tubular member, is provided. The tubular member is fitted on the operation wire and immovably attached thereon by plastic deformation, which is caused as at least a part of the tubular member is deformed to interfere with an inner circumferential surface of the flexible tube so that the operating wire is halted with respect to the flexible tube at an arbitrary position in the flexible tube by frictional resistance caused between an interfering part of the tubular member and the inner circumferential surface of the flexible tube.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: April 12, 2011
    Assignee: Hoya Corporation
    Inventor: Noriyuki Sugita
  • Publication number: 20110082455
    Abstract: The present invention provides for an apparatus and method to excise a tissue sample having a conducting element configured to receive power, an insulating holder coupled to said conducting element, and a connector coupled to said insulating holder for connection to a medical device.
    Type: Application
    Filed: October 25, 2010
    Publication date: April 7, 2011
    Inventors: Michael D. LAUFER, Jeffrey J. Christian
  • Patent number: 7905882
    Abstract: A disposable bipolar or unipolar electrosurgical handpiece having an extendable and retractable active electrode end and housed in a relatively inexpensive body comprising an activating handle for use in various electrosurgical procedures. The housing comprises slidable axially-aligned body sections coupled to rigid axially-spaced arms of the actuating handle, the arms extending both below and above the common axis of the body sections and comprising concave portions configured to receive fingers of the user. The arrangement allows the user to use 2, 3 or 4 fingers and thumb to operate the handpiece both in a normal and an inverted position.
    Type: Grant
    Filed: May 3, 2007
    Date of Patent: March 15, 2011
    Inventors: Alan G. Ellman, Jon C. Garito
  • Publication number: 20110060333
    Abstract: An end effector assembly for use with a forceps includes a pair of jaw members, a knife assembly, and one or more cam assemblies. One or more of the jaw members are moveable relative to the other about a pivot from a first, open position to a second, closed position. One or more of the jaw members include a knife channel. The pivot includes a bore. The knife assembly includes a knife blade and an actuation shaft. The knife blade is disposed distally relative to the pivot. The actuation shaft is configured for slidable translation through the bore to allow selective advancement of the knife blade through the knife channel. The one or more cam assemblies are operably coupled to the one or more moveable jaw members and are actuatable to move the one or more jaw members from the first to second position for grasping tissue therebetween.
    Type: Application
    Filed: September 9, 2009
    Publication date: March 10, 2011
    Inventor: Peter Michael Mueller
  • Patent number: 7901398
    Abstract: A reconfigurable surgical apparatus that includes a surgical instrument assembly that is formed with a hollow manipulation shaft. A linearly or rotationally movable prime mover is received within the shaft and is activated by an actuator located at a proximal end. A coupler is formed about a distal end of the shaft to have a capture ledge that is configured to releasably engage an interchangeable surgical tool that is formed with an anchor adapted to releasably mate to the capture ledge. The coupler may optionally incorporate a frangible portion that severs a portion of the coupler when the interchangeable surgical tool is removed from the apparatus to ensure single use operation of the tool. The apparatus may also have a predetermined mode of failure ensuring a known point of failure upon exposure to a predetermined force. The apparatus may also be partially enclosed by a shroud.
    Type: Grant
    Filed: October 20, 2004
    Date of Patent: March 8, 2011
    Inventors: George Stanczak, David Feng
  • Publication number: 20110054469
    Abstract: An endoscopic forceps includes a housing having a shaft attached thereto that supports a pair of jaws disposed at a distal end thereof. A drive assembly having a drive shaft with a proximal end is operable to move the jaws relative to one another from an open to closed positions. A knife assembly is operable to advance a knife through tissue disposed between the jaws and includes a flange disposed thereon. A knife lockout is included that has a flange configured to engage the proximal end of the drive shaft and a lockout arm configured to engage the flange of the knife assembly to prevent movement thereof. Movement of the jaws to the closed position causes the proximal end of the drive shaft to engage the flange on the lockout which causes the lockout arm to disengage the flange on the knife assembly to permit advancement of the knife.
    Type: Application
    Filed: August 27, 2009
    Publication date: March 3, 2011
    Inventors: John J. Kappus, Thomas J. Gerhardt, Wayne Siebrecht, Larry Johnson
  • Patent number: 7896876
    Abstract: A high-frequency incision instrument for an endoscope is provided with an electrically insulative flexible sheath constituted of a distal tube disposed at a tip portion thereof and a proximal tube disposed on a proximal side such that one is loosely inserted into the other so as to rotate around an axial line thereof, a high-frequency electrode exposed along a lateral surface of the distal tube and connected to a conductive operating wire extending throughout inside the distal tube and the proximal tube, so that a high-frequency current is supplied to the high-frequency electrode through the operating wire, and so that rotating the operating wire at a proximal end portion of the proximal tube around an axial line causes the distal tube to rotate around the axial line with respect to the proximal tube, thus to change an orientation of the high-frequency electrode.
    Type: Grant
    Filed: October 30, 2006
    Date of Patent: March 1, 2011
    Assignee: Hoya Corporation
    Inventors: Yoshiro Kawahara, Hiroaki Shibata
  • Patent number: 7874986
    Abstract: Delivery systems, and methods using the same, having an ultrasound viewing window for improved imaging and a needle for ablation treatment of target tissues. In an embodiment, the target tissue is a fibroid within a female's uterus. In an embodiment the delivery system includes a rigid shaft having a proximal end, and a distal end, and an axial passage extending through the rigid shaft. In an embodiment, the axial passage is configured for removably receiving the ultrasound imaging insert having an ultrasound array disposed on a distal portion.
    Type: Grant
    Filed: November 28, 2006
    Date of Patent: January 25, 2011
    Assignee: Gynesonics, Inc.
    Inventors: Robert K. Deckman, Craig Gerbi, Michael Munrow, Jessica Grossman
  • Patent number: 7867229
    Abstract: According to the present invention, a high-frequency treatment apparatus includes: an electrode assembly electrically connected to the high-frequency generating unit for generating a high-frequency current, the assembly having at the distal end thereof a current-applying electrode for discharging the high-frequency current, the proximal end of the current-applying electrode being covered with a first insulating member; an insertion section receiving the electrode assembly such that the electrode assembly is movable in predetermined directions, the insertion section being located on the return side of the high-frequency current applied from the current-applying electrode; a liquid supply unit for supplying an irrigation liquid to the vicinity of the current-applying electrode; and a second insulating member for covering a predetermined area on the surface of base part of the current-applying electrode, the base part being exposed from the distal end of the first insulating member.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: January 11, 2011
    Assignee: Olympus Corporation
    Inventors: Tsuyoshi Hayashida, Kazunori Taniguchi, Shigeo Nagayama, Kazuya Hijii
  • Publication number: 20110004209
    Abstract: An endoscopic forceps for treating tissue includes a housing having a shaft affixed thereto which has first and second jaw members attached to a distal end thereof. The forceps also includes an actuator for moving jaw members relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. Each of the jaw members is connected to a source of electrosurgical energy such that the jaw members are selectively capable of operating in a bipolar mode which enables the jaw members to conduct bipolar energy through tissue held therebetween to treat tissue. The forceps also includes a monopolar element housed within the first jaw member which is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member.
    Type: Application
    Filed: September 7, 2010
    Publication date: January 6, 2011
    Inventors: Kate Lawes, Sean T. Dycus, Ned Cosgriff
  • Publication number: 20110004210
    Abstract: An endoscopic forceps is disclosed including an end effector assembly having two jaw members movable from a first position in spaced relation relative to one another to at least a second position closer to one another for grasping tissue therebetween. Each of the jaw members is connectable to an electrosurgical energy source for conducting energy through tissue held therebetween. The jaw members are biased to the first position. The end effector assembly of the endoscopic forceps further includes a wire snare having a proximal end connectable to an electrosurgical energy source and a distal end translatably extending out of one of the jaw members and operatively associated with the other of the jaw members. In use, withdrawal of the proximal end of the wire snare results in movement of the jaw members from the first position to a second position and clamping of the tissue between the jaws.
    Type: Application
    Filed: September 15, 2010
    Publication date: January 6, 2011
    Inventors: Kristin D. Johnson, Joe D. Sartor, Gene H. Arts, Randel A. Frazier
  • Patent number: 7854736
    Abstract: A surgical instrument comprises a hollow tube (18) having a cutting window (16) at the distal end portion. An inner tube (15) is disposed within the tube (18) and is mounted for rotation about its longitudinal axis. A cutting tool (17) is located at the distal end of the tube (15), and is positioned adjacent to the cutting window (16). An outer tube (14) is provided over the tube (18). A motor (5) is provided for rotating the inner tube (15), and saline is fed to the cutting window (16) via a passageway (25) between the tubes (15) and (18). The inner tube (15) has a central lumen (24) through which tissue cut by the cutting tool (17) is removed under the action of a source of suction (12). The outer surface of the tube 18 is covered with an electrically insulating layer (22) and coagulating RF signals are supplied between the tube (18) and the outer tube (14) so as to coagulate tissue at the cutting window (16).
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: December 21, 2010
    Assignee: Gyrus Ent, L.L.C.
    Inventor: Phillip Andrew Ryan
  • Patent number: 7844319
    Abstract: Herein is disclosed a probe, including a first electrode disposed at least partially on the probe surface, a second electrode disposed at least partially on the probe surface, a first conductor electrically coupled to the first electrode, a second conductor electrically coupled to the second electrode, and a reactive element electrically coupling the first conductor and the second conductor.
    Type: Grant
    Filed: April 15, 2002
    Date of Patent: November 30, 2010
    Inventors: Robert C. Susil, Gwyneth Susil, Ergin Atalar, Albert C. Lardo, Henry R. Halperin, Ronald D. Berger, Hugh Calkins, Paul Bottomley
  • Patent number: 7828796
    Abstract: A method for creating a channel through an occlusion located in a substantially elongated body vessel of a patient, The method uses a channel creating apparatus defining an apparatus distal end portion insertable into the body vessel, the channel creating apparatus including an energy delivery component operatively coupled to the apparatus distal end portion for delivering energy substantially adjacent the apparatus distal end portion. The method includes: inserting the apparatus distal end portion into the body vessel; creating a channel first portion through the occlusion harder section using, at least in part, a delivery of energy into the occlusion harder portion; and creating a channel second portion through the occlusion softer portion by pushing the apparatus distal end portion through at least a portion of the occlusion softer portion substantially without delivering energy into the occlusion softer portion.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: November 9, 2010
    Assignee: Baylis Medical Company Inc.
    Inventors: Christine Wong, Gareth Davies, Ramsey Leung, Mark Mosley
  • Patent number: 7828798
    Abstract: A laparoscopic bipolar electrosurgical instrument for sealing tissue includes a handle having an elongated tube affixed thereto. The tube includes first and second jaw members having electrically conductive sealing surfaces attached to a distal end thereof which are movable from a first position for approximating tissue to a second position for grasping tissue therebetween. The handle includes a fixed handle and a handle which is movable relative to the fixed handle to effect movement of the jaw members from the first position to the second position for grasping tissue. The jaw members connect to a source of electrosurgical energy such that the opposable sealing surfaces are capable of conducting electrosurgical energy through tissue held therebetween. A stop is included for maintaining a minimum separation distance between opposing sealing surfaces. A ratchet is also included to maintain a closure force in the range of about 7 kg/cm2 to about 13 kg/cm2 between opposing sealing surfaces.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 9, 2010
    Assignee: Covidien AG
    Inventors: Steven P. Buysse, Kate R. Lawes, Dale F. Schmaltz, Michael J. Lands, S. Wade Lukianow, Kristin D. Johnson, Gary M. Couture, Lap P. Nguyen
  • Patent number: 7828797
    Abstract: Method, system and apparatus for carrying out electrosurgical procedures interstitially. Elevated temperature fluid such as steam generated by an instrument born electrosurgical cutting arc is evacuated through an intake port located adjacent the cutting electrode. Instrument cannula surface heating caused by transport of the heated fluid is isolated. Such thermal isolation is provided by a thermal shield which may be configured as an enveloping sheath.
    Type: Grant
    Filed: November 2, 2005
    Date of Patent: November 9, 2010
    Assignee: Intact Medical Corporation
    Inventor: Philip E. Eggers
  • Patent number: 7824407
    Abstract: A treatment tool for an endoscope which grasps an object of treatment, includes: a flexible sheath; a forward-and-backward moving section; and elastic grippers, wherein each of the pair of arms includes: a connector; a bent portion; a rectilinear portion; and a distal clasp, wherein in conjunction with the forward and backward movement operation of the forward-and-backward moving section, the distal ends of the pair of arms are deployed when the pair of arms are projected from the distal end of the sheath, the distal ends of the pair of arms are closed by elastic deformation when the pair of arms are moved into the sheath.
    Type: Grant
    Filed: October 26, 2006
    Date of Patent: November 2, 2010
    Assignee: Olympus Corporation
    Inventors: Hironori Yamamoto, Megumi Kimura, Ichiro Takahashi
  • Patent number: 7824398
    Abstract: The present invention provides systems, apparatus and methods for selectively applying electrical energy to body tissue in order to, ablate, contract, coagulate, or otherwise modify a tissue or organ of a patient. An electrosurgical apparatus includes an electrode support bearing an active electrode in the form of a plasma blade or hook having an active edge and first and second blade sides. The active edge is adapted for severing a target tissue via localized molecular dissociation of tissue components. The first and second blade sides are adapted for engaging against, and coagulating, the severed tissue. s. A method of the present invention comprises positioning an electrosurgical probe adjacent to the target tissue so that a blade- or hook-like active electrode is brought into at least close proximity to the target tissue in the presence of an electrically conductive fluid.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 2, 2010
    Assignee: ArthroCare Corporation
    Inventors: Jean Woloszko, Craig Tsuji, Hira V. Tapliyal, Philip E. Eggers