David Mark Garrison

US Patent:

7232440, Jun 19, 2007

Filed:

Oct 21, 2004

Appl. No.:

10/970307

Inventors:

Patrick L. Dumbauld - Lyons CO, US
David M. Garrison - Longmont CO, US
Paul Guerra - Boulder CO, US
Darion Peterson - Boulder CO, US

Assignee:

Sherwood Services AG - Schaffhausen

International Classification:

A61B 18/14

US Classification:

606 51, 606 45, 606 48, 606 52

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 adapted to connect 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 and integrally associated with the knife. The monopolar element is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member.

US Patent:

7270664, Sep 18, 2007

Filed:

May 5, 2006

Appl. No.:

11/418876

Inventors:

Kristin D. Johnson - Louisville CO, US
Gary M. Couture - Longmont CO, US
Jeff Unger - Superior CO, US
Robert Sharp - Boulder CO, US
David M. Garrison - Longmont CO, US
Sean T. Dycus - Broomfield CO, US
David Hixson - Longmont CO, US
Craig Weinberg - Denver CO, US

Assignee:

Sherwood Services AG - Schaffhausen

International Classification:

A61B 18/18

US Classification:

606 51, 606 45

Abstract:

An end effector assembly for use with an instrument for sealing vessels and cutting vessels includes a pair of opposing first and second jaw members which are movable relative to one another from a first spaced apart position to a second position for grasping tissue therebetween. Each jaw member includes an electrically conductive tissue contacting surface connected to an electrosurgical energy source. At least one of the jaw members includes an electrically conductive cutting element disposed within an insulator defined in the jaw member. A rigid structural support is included which is configured to support the electrically conductive tissue sealing surface and includes at least one flow channel defined therein.

US Patent:

7442194, Oct 28, 2008

Filed:

May 7, 2007

Appl. No.:

11/800678

Inventors:

Patrick L. Dumbauld - Lyons CO, US
David M. Garrison - Longmont CO, US
Paul Guerra - Boulder CO, US
Darion Peterson - Boulder CO, US
Sean T. Dycus - Denver CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/18

US Classification:

606 51, 606 41, 606 48, 606 50, 606 52

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 adapted to connect 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 and integrally associated with the knife. The monopolar element is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member.

US Patent:

7445621, Nov 4, 2008

Filed:

May 7, 2007

Appl. No.:

11/800595

Inventors:

Patrick L. Dumbauld - Lyons CO, US
David M. Garrison - Longmont CO, US
Paul Guerra - Boulder CO, US
Darion Peterson - Boulder CO, US
Sean T. Dycus - Denver CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/18

US Classification:

606 51, 606 41, 606 48, 606 50, 606 52

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 adapted to connect 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 and integrally associated with the knife. The monopolar element is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member.

US Patent:

7481810, Jan 27, 2009

Filed:

May 7, 2007

Appl. No.:

11/800750

Inventors:

Patrick L. Dumbauld - Lyons CO, US
David M. Garrison - Longmont CO, US
Paul Guerra - Boulder CO, US
Darion Peterson - Boulder CO, US
Sean T. Dycus - Denver CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/18

US Classification:

606 51, 606 41, 606 45, 606 50

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 adapted to connect 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 and integrally associated with the knife. The monopolar element is selectively movable from a first position within the first jaw member to a second position distal to the first jaw member.

US Patent:

7597693, Oct 6, 2009

Filed:

Jun 13, 2003

Appl. No.:

10/461550

Inventors:

David M. Garrison - Longmont CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/18

US Classification:

606 51, 606 46

Abstract:

A bipolar forceps for sealing and dividing tissue includes a housing having a shaft affixed thereto. The shaft includes first and second jaw members attached to the distal end thereof which are movable relative to one another from a first spaced apart position to a second position for grasping tissue. At least one of the jaw members includes a knife channel disposed substantially along the length thereof. The knife channel has a depth, a width and an aspect ratio which is defined as the depth of the knife channel divided by the width of the knife channel. Preferably the aspect ratio of the knife channel is at least 1. 3. The forceps is connected to a source of electrosurgical energy and also includes an actuator for moving the jaw members relative to one another. A knife assembly is included which allows a user to selectively move a knife to cut tissue disposed between the jaw members.

US Patent:

7628791, Dec 8, 2009

Filed:

Aug 19, 2005

Appl. No.:

11/207956

Inventors:

David M. Garrison - Longmont CO, US
Paul Hermes - Guilford CT, US
Sean Dycus - Broomfield CO, US

Assignee:

Covidien AG - Neuhausen am Rheinfall

International Classification:

A61B 18/14
A61B 17/32

US Classification:

606 51, 606171

Abstract:

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.

US Patent:

7641653, Jan 5, 2010

Filed:

May 4, 2006

Appl. No.:

11/417375

Inventors:

Casey D. Dalla Betta - Westminster CO, US
J. Cody Bumgarner - Grand Junction CO, US
Dylan Kingsley - Loveland CO, US
John R. Twomey - Golden Valley MN, US
Brady C. Walters - Littleton CO, US
David M. Garrison - Longmont CO, US
Dylan Hushka - Boulder CO, US

Assignee:

Covidien AG - Neuhausen Am Rheinfall

International Classification:

A61B 18/18
H01H 9/04

US Classification:

606 51, 2002931, 606 52

Abstract:

A removable handswitch and electrode assembly for use with a forceps having opposing end effectors and a handle for effecting relative movement of the end effectors with respect to one another includes a housing having at least one portion which removably engages at least a portion of a mechanical forceps and a handswitch assembly disposed on the housing. A pair of electrodes is included which removably engage a distal end of the mechanical forceps such that the electrodes reside in opposing relation to one another. At least one electrode is adapted to connect to an electrosurgical generator through the handswitch assembly. At least one stop member is operatively associated with the electrodes and controls the distance between the opposing electrodes to affect a tissue seal.