US 9,808,308 B2
Electrosurgical cutting and sealing instruments with cam-actuated jaws
Craig N. Faller, Milford, OH (US); Matthew C. Miller, Cincinnati, OH (US); Omar J. Vakharia, Cincinnati, OH (US); Robert J. Laird, Morrow, OH (US); Gavin M. Monson, Oxford, OH (US); John V. Hunt, Cincinnati, OH (US); Richard W. Timm, Cincinnati, OH (US); David A. Witt, Maineville, OH (US); Zhifan F. Huang, Mason, OH (US); Timothy G. Dietz, Wayne, PA (US); Jeffrey L. Aldridge, Lebanon, OH (US); Mary E. Mootoo, Cincinnati, OH (US); Raymond M. Banks, Cupertino, CA (US); and Frederick E. Shelton, IV, Hillsboro, OH (US)
Assigned to Ethicon LLC, Guaynabo, PR (US)
Filed by Ethicon Endo-Surgery, Inc., Cincinnati, OH (US)
Filed on Aug. 4, 2014, as Appl. No. 14/450,922.
Application 14/450,922 is a continuation of application No. 12/758,253, filed on Apr. 12, 2010, granted, now 8,834,518.
Prior Publication US 2014/0343550 A1, Nov. 20, 2014
Int. Cl. A61B 17/29 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 18/1447 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/1412 (2013.01); A61B 2018/1455 (2013.01); A61B 2018/1467 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A surgical instrument comprising:
an end effector comprising:
a first jaw member defining a first longitudinal slot;
a second jaw member defining a second longitudinal slot, the second jaw member pivotable towards the first jaw member about a pivot point; and
a cam pin coupled to the second jaw member and positioned offset from the pivot point; and
a reciprocating member translatable distally and proximally through the first longitudinal slot and the second longitudinal slot, wherein a distal portion of the reciprocating member defines a blade, wherein the reciprocating member defines a cam slot for receiving the cam pin, wherein distal motion of the reciprocating member exerts a force on the cam pin to pivot the second jaw member towards the first jaw member, and wherein proximal motion of the reciprocating member exerts a force on the cam pin to pivot the second jaw member away from the first jaw member;
wherein the cam slot comprises a distal portion, a proximal portion vertically offset from the distal portion, and a transition portion connecting the distal portion of the cam slot and the proximal portion, the transition portion angled relative to a longitudinal axis along which the reciprocating member is translatable.