US 12,220,159 B2
Surgical instrument with eccentric cam
Alyssa M. Sawyer, Broomfield, CO (US); and Purvishkumar H. Soni, Longmont, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by COVIDIEN LP, Mansfield, MA (US)
Filed on Mar. 15, 2019, as Appl. No. 16/354,594.
Prior Publication US 2020/0289192 A1, Sep. 17, 2020
Int. Cl. A61B 17/28 (2006.01); A61B 17/29 (2006.01); A61B 18/08 (2006.01); A61B 18/12 (2006.01); A61B 18/14 (2006.01); A61B 18/00 (2006.01)
CPC A61B 18/1445 (2013.01) [A61B 17/282 (2013.01); A61B 17/2909 (2013.01); A61B 18/085 (2013.01); A61B 18/1206 (2013.01); A61B 18/1482 (2013.01); A61B 2017/2913 (2013.01); A61B 2017/2946 (2013.01); A61B 2018/00083 (2013.01); A61B 2018/00589 (2013.01); A61B 2018/00595 (2013.01); A61B 2018/00601 (2013.01); A61B 2018/00619 (2013.01); A61B 2018/0063 (2013.01); A61B 2018/00916 (2013.01); A61B 2018/1412 (2013.01); A61B 2018/1455 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A forceps, comprising:
a housing including an actuator movably coupled to the housing;
an elongated shaft assembly coupled to the housing and extending distally to support a pair of jaw members at a distal end thereof, at least one of the jaw members selectively moveable relative to the other jaw member between a spaced apart position for manipulating tissue and a closed position for compressing tissue therebetween; and
a cam assembly supported in the housing and including an eccentric cam cable and an eccentric cam having an eccentric profile, the eccentric cam cable wrapped around the eccentric profile of the eccentric cam, operably coupled to the actuator, and positioned to rotate the eccentric cam upon movement of the eccentric cam cable, wherein rotation of the eccentric cam reduces an amount of force on the actuator required to move the jaw members to the closed position to compress tissue disposed between the jaw members, wherein the cam assembly further includes an annular cam positioned adjacent to the eccentric cam.