Patents by Inventor David M. Garrison
David M. Garrison has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8906018Abstract: A forceps includes an end effector assembly having first and second jaw members moveable with respect to one another between an open position and a closed position. A knife channel having a body and a base is defined within each jaw member. A knife assembly includes a knife having a bifurcated distal end. The bifurcated end includes first and second cutting members each defining an opposed cutting surface and having a tab at a free end thereof for translation through the base of a knife channel. The knife is translatable into the channels when the jaw members are in the closed position such that the cutting members are approximated when translated through the channels. The knife is also translatable into the channels when the jaw members are in the open position such that the cutting members are flexed apart when translated through the jaw members.Type: GrantFiled: October 18, 2010Date of Patent: December 9, 2014Assignee: Covidien LPInventors: Kathy E. Rooks, Glenn A. Horner, Duane E. Kerr, Jeffrey R. Townsend, William H. Nau, Jr., David M. Garrison, Edward M. Chojin
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Patent number: 8888775Abstract: A forceps includes a housing having a shaft attached thereto. The shaft has an end effector assembly disposed at a distal end thereof. The end effector assembly includes a pair of jaw members disposed in opposing relation relative to one another. At least one of the jaw members is moveable relative to the other between a spaced apart position and an approximated position for grasping tissue therebetween. At least one shape memory cutting member is coupled to one of the jaw members. The shape memory cutting member(s) is transitionable between a retracted state and an extended state. In the extended state, the cutting member(s) extends between the jaw members to cut tissue disposed therebetween when the jaw members are in the approximated position.Type: GrantFiled: August 10, 2010Date of Patent: November 18, 2014Assignee: Covidien LPInventors: William H. Nau, Jr., David M. Garrison, Kathy E. Rooks, Edward M. Chojin, Jessica E. C. Olson
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Publication number: 20140284841Abstract: A method for manufacturing an end effector assembly includes providing first and second jaw members moveable relative to one another about a pivot between a first, spaced-apart position and a second, approximated position. One of the first and second jaw members includes a cavity defined therein and the other of the first and second jaw members includes a stop member configured to be inserted into the cavity. A gap-setting gauge is grasped between the first and second jaw members to define a gap-distance between the jaw members equivalent to a thickness of the gap-setting gauge. The first and second jaw members are set such that the jaw members are prevented from approximation beyond the gap-distance.Type: ApplicationFiled: June 5, 2014Publication date: September 25, 2014Inventors: JOANNA ACKLEY, JAMES D. ALLEN, IV, RYAN C. ARTALE, KIM V. BRANDT, DENNIS W. BUTCHER, EDWARD M. CHOJIN, GARY M. COUTURE, JAMES S. CUNNINGHAM, DAVID M. GARRISON, KEIR HART, RUSSELL D. HEMPSTEAD, GLENN A. HORNER, DUANE E. KERR, DYLAN R. KINGSLEY, PETER M. MUELLER, JESSICA E. C. OLSON, SEAN T. ONEILL, JASON T. SANDERS, ROBERT M. SHARP, JOHN R. TWOMEY, JEFFREY R. UNGER
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Patent number: 8795269Abstract: A surgical instrument includes an end effector assembly defining a feed-in side. The end effector assembly includes first and second rotatable gear members positioned adjacent one another to define a gap therebetween. When the first and second gear members are rotated, tissue positioned adjacent the feed-in side of the end effector assembly is engaged by the first and second gear members and is fed into the gap between the first and second gear members for one or both of sealing and dividing tissue disposed between the first and second gear members.Type: GrantFiled: July 26, 2010Date of Patent: August 5, 2014Assignee: Covidien LPInventor: David M. Garrison
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Publication number: 20140194873Abstract: An endoscopic forceps includes a housing having a shaft attached thereto, the shaft including a pair of jaw members disposed at a distal end thereof. The forceps also includes a drive assembly disposed in the housing which moves the 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 are closer to one another for manipulating tissue. A pair of handles is operatively connected to the drive assembly and the handles are movable relative to the housing to actuate the drive assembly to move the jaw members. Each of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy for treating tissue. The forceps also includes a first switch disposed on the housing which is activatable to selectively deliver energy of a first electrical potential to at least one jaw member for treating tissue in a monopolar fashion.Type: ApplicationFiled: March 11, 2014Publication date: July 10, 2014Applicant: COVIDIEN AGInventors: PATRICK L. DUMBAULD, DAVID M. GARRISON, PAUL GUERRA, DYLAN HUSHKA
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Patent number: 8752264Abstract: A method for manufacturing an end effector assembly is provided. The method includes grasping a gap-setting gauge between first and second jaw members moveable relative to one another about a pivot between a first, spaced-apart position and a second position proximate tissue and setting the first and second jaw members such that in the approximated position the jaw members cooperate to define a gap distance between the jaw members equivalent to the thickness of the gap-setting gauge such that when positioning tissue between the jaw members full approximation of the jaws is limited to the gap distance.Type: GrantFiled: March 6, 2012Date of Patent: June 17, 2014Assignee: Covidien LPInventors: Joanna Ackley, James D. Allen, IV, Ryan C. Artale, Kim V. Brandt, Dennis W. Butcher, Edward M. Chojin, Gary M. Couture, James S. Cunningham, David M. Garrison, Keir Hart, Russell D. Hempstead, Glenn A. Horner, Daniel A. Joseph, Duane E. Kerr, Dylan R. Kingsley, Peter M. Mueller, Jessica E. C. Olson, Sean T. O'Neill, Jason T. Sanders, Robert M. Sharp, John R. Twomey, Jeffrey R. Unger
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Publication number: 20140155893Abstract: A forceps includes an end effector assembly including a pair of jaw members disposed in opposing relation relative to one another. At least one jaw member is moveable relative to the other between a spaced apart position, a first approximated position, and a second approximated position. The jaw members are configured to apply a pre-determined pressure to tissue disposed therebetween in each of the first and second approximated positions. A sealing pressure is applied to tissue disposed between the jaw members when the jaw members are in the first approximated position. A cutting pressure is applied to tissue disposed between the jaw members when the jaw members are in the second approximated position.Type: ApplicationFiled: February 10, 2014Publication date: June 5, 2014Applicant: COVIDIEN LPInventors: EDWARD M. CHOJIN, DAVID M. GARRISON, JENNIFER S. HARPER, GLENN A. HORNER, DUANE E. KERR, JESSICA E.C. OLSON, KATHY E. ROOKS, GENEVA LADTKOW
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Publication number: 20140135761Abstract: An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.Type: ApplicationFiled: January 23, 2014Publication date: May 15, 2014Applicant: Covidien AGInventors: David M. Garrison, Paul Hermes, Sean T. Dycus
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Publication number: 20140107646Abstract: An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.Type: ApplicationFiled: November 27, 2013Publication date: April 17, 2014Applicant: COVIDIEN AGInventors: David M. Garrison, Paul Hermes, Sean T. Dycus
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Publication number: 20140107645Abstract: An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.Type: ApplicationFiled: November 27, 2013Publication date: April 17, 2014Applicant: COVIDIEN AGInventors: David M. Garrison, Paul Hermes, Sean T. Dycus
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Publication number: 20140100568Abstract: A jaw assembly includes an electrically-conductive tissue-engaging structure, a jaw member including a support base, and a non-electrically conductive member including a first portion configured to engage the electrically-conductive tissue-engaging structure and a second portion configured to engage the support base of the jaw member. The non-electrically conductive member adapted to electrically isolate the electrically-conductive tissue-engaging structure from the jaw member. The electrically-conductive tissue-engaging structure and the non-electrically conductive member cooperatively define a longitudinally-oriented knife channel therethrough.Type: ApplicationFiled: September 5, 2013Publication date: April 10, 2014Applicant: COVIDIEN LPInventor: David M. Garrison
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Publication number: 20140100564Abstract: A jaw assembly includes a jaw member and a structural insert. The jaw member includes an arm member and a support base extending distally from the arm member. The arm member defines a first portion of the jaw member. The support base defines a second portion and a third portion of the jaw member. The second portion defines a cavity disposed between the first portion and the third portion. At least a portion of the structural insert is disposed within the cavity.Type: ApplicationFiled: September 5, 2013Publication date: April 10, 2014Applicant: COVIDIEN LPInventor: DAVID M. GARRISON
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Publication number: 20140094845Abstract: 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: ApplicationFiled: September 24, 2013Publication date: April 3, 2014Applicant: COVIDIEN LPInventors: David M. Garrison, Jeffrey M. Roy, Duane E. Kerr
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Publication number: 20140094798Abstract: An endoscopic bipolar forceps includes a housing and a shaft, the shaft having an end effector assembly at its distal end. The end effector assembly includes two jaw members for grasping tissue therebetween. The jaw members are adapted to connect to an electrosurgical energy source which enable them to conduct energy through the tissue to create a tissue seal. A drive assembly is disposed within the housing which moves the jaw members. A switch is disposed within the housing which activates the electrosurgical energy. A knife assembly is included which is advanceable to cut tissue held between the jaw members. A movable handle is connected to the housing. Continual actuation of the movable handle engages the drive assembly to move the jaw members, engages the switch to activate the electrosurgical energy source to seal the tissue, and advances the knife assembly the cut the tissue disposed between the jaw members.Type: ApplicationFiled: November 27, 2013Publication date: April 3, 2014Applicant: COVIDIEN AGInventors: David M. Garrison, Paul Hermes, Sean T. Dycus
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Patent number: 8672939Abstract: An electrosurgical forceps includes a handle and a shaft extending from the handle. The handle is selectively movable to actuate a pair of first and second opposable jaw members pivotably connected to each other at a distal end of the shaft. The jaw members are moveable from an open position to a closed position and are each adapted to connect to an electrosurgical energy source. A first linkage is disposed at least partially within the shaft and is operably coupled between the first jaw member and a second linkage disposed proximal to the first linkage. Selective movement of the handle rotates the second linkage in a first direction, thereby rotating the first linkage in an opposite second direction to move the jaw members between the open and closed positions. In some embodiments, the jaw members are configured in a releasably locked configuration when in the closed position.Type: GrantFiled: June 1, 2010Date of Patent: March 18, 2014Assignee: Covidien LPInventor: David M. Garrison
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Patent number: 8668689Abstract: An endoscopic forceps includes a housing having a shaft attached thereto, the shaft including a pair of jaw members disposed at a distal end thereof. The forceps also includes a drive assembly disposed in the housing which moves the 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 are closer to one another for manipulating tissue. A pair of handles is operatively connected to the drive assembly and the handles are movable relative to the housing to actuate the drive assembly to move the jaw members. Each of the jaw members is adapted to connect to a source of electrical energy such that the jaw members are capable of conducting energy for treating tissue. The forceps also includes a first switch disposed on the housing which is activatable to selectively deliver energy of a first electrical potential to at least one jaw member for treating tissue in a monopolar fashion.Type: GrantFiled: April 19, 2010Date of Patent: March 11, 2014Assignee: Covidien AGInventors: Patrick L. Dumbauld, David M. Garrison, Paul Guerra, Dylan Hushka
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Patent number: 8647343Abstract: A forceps includes an end effector assembly including a pair of jaw members disposed in opposing relation relative to one another. At least one jaw member is moveable relative to the other between a spaced apart position, a first approximated position, and a second approximated position. The jaw members are configured to apply a pre-determined pressure to tissue disposed therebetween in each of the first and second approximated positions. A sealing pressure is applied to tissue disposed between the jaw members when the jaw members are in the first approximated position. A cutting pressure is applied to tissue disposed between the jaw members when the jaw members are in the second approximated position.Type: GrantFiled: June 23, 2010Date of Patent: February 11, 2014Assignee: Covidien LPInventors: Edward M. Chojin, David M. Garrison, Jennifer S. Harper, Glenn A. Horner, Duane E. Kerr, Jessica E. C. Olson, Kathy E. Rooks, Geneva Ladtkow
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Publication number: 20140031821Abstract: A forceps includes first and second shaft members and a trigger assembly. The first and second shaft members each have a jaw member disposed at a distal end thereof. One or both of the jaw members are moveable to position the jaw members between an open position and a closed position. One of the jaw members is configured for reciprocation of a blade therethrough. The trigger assembly is movable between unactuated and actuated positions to selectively translate the blade between a retracted position and one or more extended positions. The blade extends at least partially through one or both of the jaw members in the one or more extended positions such that when the blade is disposed in the one or more extended positions, the trigger assembly is configured to move to the unactuated position upon movement of the jaw members from the closed position to the open position.Type: ApplicationFiled: March 15, 2013Publication date: January 30, 2014Applicant: COVIDIEN LPInventor: DAVID M. GARRISON
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Publication number: 20130345706Abstract: An electrosurgical forceps includes a handle having a shaft extending therefrom defining a longitudinal axis. The handle is selectively movable to translate movement of the shaft along the longitudinal axis to actuate a pair of laterally spaced first and second jaw members pivotably connected to a distal end of the shaft. The first and second jaw members are moveable from an open position, wherein the first and second jaw members are in spaced relation relative to a stationary jaw member, to a closed position wherein the first and second jaw members cooperate with the stationary jaw member to grasp tissue therebetween. Each of the jaw members is adapted to connect to an electrosurgical energy source to conduct energy through tissue grasped therebetween to effect a tissue seal.Type: ApplicationFiled: March 15, 2013Publication date: December 26, 2013Applicant: COVIDIEN LPInventor: DAVID M. GARRISON
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Publication number: 20130274736Abstract: An instrument and related method includes at least one substrate, and conductive layer, and a coating disposed on the conductive layer. The conductive layer is at partially disposed on the at least one substrate. The coating is disposed on the conductive layer and includes first and second materials. The first material and second materials are different from each other.Type: ApplicationFiled: April 17, 2012Publication date: October 17, 2013Applicant: TYCO HEALTHCARE GROUP LPInventor: David M. Garrison