Allan J Evans

US Patent:

20130046303, Feb 21, 2013

Filed:

Aug 18, 2011

Appl. No.:

13/212329

Inventors:

Allan J. Evans - Golden CO, US
Peter M. Mueller - Frederick CO, US
Peter D. Gadsby - Broomfield CO, US

Assignee:

TYCO Healthcare Group LP - Boulder CO

International Classification:

A61B 18/14

US Classification:

606 45

Abstract:

A forceps includes an end effector assembly having first and second jaw members. One (or both) of the first and second jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a longitudinally-extending blade channel defined therein. An electrical cutting insert is releasably engageable within the blade channel of the jaw member such that the jaw member is transitionable between a mechanical cutting mode, wherein the electrical cutting insert is disengaged from the jaw member to permit reciprocation of a knife blade through the blade channel for mechanically cutting tissue grasped between the jaw members, and an electrical cutting mode, wherein the electrical cutting insert is engaged within the blade channel of the jaw member for electrically cutting tissue grasped between the jaw members.

US Patent:

20130046306, Feb 21, 2013

Filed:

Aug 18, 2011

Appl. No.:

13/212297

Inventors:

Allan J. Evans - Golden CO, US
Peter M. Mueller - Frederick CO, US
Peter D. Gadsby - Broomfield CO, US

Assignee:

TYCO Healthcare Group LP - Boulder CO

International Classification:

A61B 18/18

US Classification:

606 51

Abstract:

A forceps includes an end effector assembly including first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame including an engagement recess defined on each lateral side thereof and a replaceable component configured for slidable positioning about the jaw frame. The replaceable component includes an outer jaw housing having an engagement tang disposed on each lateral side thereof. The engagement tangs are configured to engage the engagement recesses of the jaw frame upon slidable positioning of the replaceable component about the jaw frame to secure the replaceable component to the jaw frame. The replaceable component includes an electrically conductive tissue sealing plate engaged to the outer jaw housing to define a tissue sealing surface.

US Patent:

20130046337, Feb 21, 2013

Filed:

Aug 18, 2011

Appl. No.:

13/212308

Inventors:

Allan J. Evans - Golden CO, US
Peter M. Mueller - Frederick CO, US
Peter D. Gadsby - Broomfield CO, US

Assignee:

TYCO Healthcare Group LP - Boulder CO

International Classification:

A61B 17/28

US Classification:

606205

Abstract:

A forceps includes an end effector assembly having first and second jaw members. One or both of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One or both of the jaw members includes a jaw frame and a replaceable component engageable with the jaw frame. The replaceable component includes one or more engagement members configured to engage a corresponding engagement member(s) disposed on the jaw frame to secure the replaceable component to the jaw frame. The engagement member(s) is transitionable from a new state to a used state, wherein, in the used state, the engagement member(s) is incapable of reengaging the corresponding engagement member(s).

US Patent:

20190336201, Nov 7, 2019

Filed:

Jul 17, 2019

Appl. No.:

16/513985

Inventors:

- Mansfield MA, US
Edward M. Chojin - Boulder CO, US
Allan J. Evans - Golden CO, US
Russell D. Hempstead - Lafayette CO, US
Glenn A. Horner - Boulder CO, US
Mark J. Huseman - Broomfield CO, US
Daniel A. Joseph - Golden CO, US
Arlen J. Reschke - Longmont CO, US
Robert M. Sharp - Boulder CO, US

International Classification:

A61B 18/14
A61B 17/295
A61B 17/28
A61B 18/08

Abstract:

A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided.

US Patent:

20190239944, Aug 8, 2019

Filed:

Apr 19, 2019

Appl. No.:

16/389002

Inventors:

- MANSFIELD MA, US
ALLAN J. EVANS - Golden CO, US

International Classification:

A61B 18/14
A61B 17/29

Abstract:

A surgical instrument includes an elongated shaft having a proximal structural member and a proximal drive member that is selectively movable with respect to the proximal structural member. A modular end effector is removably coupled to the elongated shaft, and has a distal structural member and a distal drive member that is operatively coupled to a pair of jaw members. A separable joint is defined between the elongated shaft and the end effector. The separable joint includes laterally prominent and laterally indented portions of each of the proximal and distal structural members and of each of the proximal and distal drive members. The structural members are interlocked to resist longitudinal separation and permit lateral separation. The drive members are movable relative to structural members to move the separable joint to a locked configuration wherein the drive members prohibit lateral separation of the structural members.

US Patent:

20170360462, Dec 21, 2017

Filed:

Sep 1, 2017

Appl. No.:

15/693761

Inventors:

- Mansfield MA, US
EDWARD M. CHOJIN - BOULDER CO, US
DUANE E. KERR - LOVELAND CO, US
PETER M. MUELLER - FREDERICK CO, US
ALLAN J. EVANS - GOLDEN CO, US

International Classification:

A61B 17/285
A61B 18/14
A61B 17/32
A61B 17/00
A61B 17/29

Abstract:

A surgical instrument includes a shaft defining a longitudinal axis therethrough and having an end effector assembly disposed at a distal end thereof. The shaft includes first and second shaft components that are releasably engageable with one another. A drive sleeve is disposed within the shaft and is longitudinally translatable relative to the shaft to transition the end effector assembly between a first state and a second state. The drive sleeve includes first and second drive sleeve components that are releasably engageable with one another. A coupling mechanism includes one or more shaft cantilever springs configured to releasably engage the first and second shaft components to one another and one or more drive sleeve cantilever springs configured to releasably engage the first and second drive sleeve components to one another.

US Patent:

20170071657, Mar 16, 2017

Filed:

Nov 28, 2016

Appl. No.:

15/361984

Inventors:

- Mansfield MA, US
Edward M. Chojin - Boulder CO, US
Allan J. Evans - Golden CO, US
Russell D. Hempstead - Lafayette CO, US
Glenn A. Horner - Boulder CO, US
Mark J. Huseman - Broomfield CO, US
Daniel A. Joseph - Golden CO, US
Arlen J. Reschke - Longmont CO, US
Robert M. Sharp - Boulder CO, US

International Classification:

A61B 18/14
A61B 17/295

Abstract:

A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided.

US Patent:

20160302853, Oct 20, 2016

Filed:

Jun 27, 2016

Appl. No.:

15/194291

Inventors:

- Mansfield MA, US
ALLAN J. EVANS - GOLDEN CO, US
PETER M. MUELLER - FREDERICK CO, US
NATHAN WHITE - HAMDEN CT, US
DAVID A. SCHECHTER - BOULDER CO, US
STEPHEN EVANS - WESTFORD MA, US

International Classification:

A61B 18/14

Abstract:

An electrosurgical forceps includes a housing having a shaft extending distally therefrom. The shaft defines a longitudinal axis therethrough and a knife blade shaft is operably disposed within the shaft. An end effector is operably disposed at a distal end of the shaft. The end effector includes a pair of spaced-apart first and second jaw members that are movable from an open configuration to a clamping configuration. An electrode assembly includes first and second electrode housings and a knife blade. The first and second electrode housings are operably coupled to one another and are configured to selectively couple to respective first and second jaw members to electrosurgically treat tissue clamped between the first and second jaw members. The knife blade is configured to selectively couple to the knife blade shaft.