US 11,684,407 B2
Surgical instruments for grasping and treating tissue
Craig V. Krastins, Arvada, CO (US); James D. Allen, IV, Broomfield, CO (US); Jessica E.C. Olson, Frederick, CO (US); Jason G. Weihe, Longmont, CO (US); and Purvish Soni, Longmont, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 7, 2020, as Appl. No. 17/65,010.
Application 17/065,010 is a continuation of application No. 15/806,679, filed on Nov. 8, 2017, granted, now 10,828,084.
Application 15/806,679 is a continuation of application No. 14/719,422, filed on May 22, 2015, granted, now 9,918,779, issued on Mar. 20, 2018.
Prior Publication US 2021/0022790 A1, Jan. 28, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/29 (2006.01); A61B 18/12 (2006.01); A61B 17/26 (2006.01); A61B 18/14 (2006.01); A61B 90/00 (2016.01); A61B 18/00 (2006.01); A61B 17/00 (2006.01); A61B 17/02 (2006.01); A61B 17/295 (2006.01); A61B 17/32 (2006.01)
CPC A61B 18/12 (2013.01) [A61B 17/26 (2013.01); A61B 17/29 (2013.01); A61B 18/1445 (2013.01); A61B 18/1485 (2013.01); A61B 90/03 (2016.02); A61B 17/0218 (2013.01); A61B 17/295 (2013.01); A61B 18/1447 (2013.01); A61B 2017/00353 (2013.01); A61B 2017/00424 (2013.01); A61B 2017/00526 (2013.01); A61B 2017/292 (2013.01); A61B 2017/2912 (2013.01); A61B 2017/2919 (2013.01); A61B 2017/2925 (2013.01); A61B 2017/2926 (2013.01); A61B 2017/2936 (2013.01); A61B 2017/320044 (2013.01); A61B 2018/0091 (2013.01); A61B 2018/00184 (2013.01); A61B 2018/00327 (2013.01); A61B 2018/00607 (2013.01); A61B 2018/00928 (2013.01); A61B 2018/1455 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A surgical instrument, comprising:
a housing;
an elongated shaft extending distally from the housing;
a drive member extending through the elongated shaft;
an end effector assembly operably disposed at a distal end of the elongated shaft, the end effector assembly including first and second jaw members operably coupled to a first end of the drive member, the first and second jaw members movable relative to one another via actuation of the drive member, at least one of the first or second jaw members defining a knife channel extending longitudinally therethrough; and
a torsion spring operably disposed within the housing, the torsion spring including a body rotatably disposed about a post and first and second legs extending from opposite ends of the body, the first leg biasable against the housing and the second leg operably associated with a second end of the drive member, wherein, during at least a portion of actuation of the drive member to move the first and second jaw members relative to one another, the post and the second leg are configured to move relative to the housing while the first leg is biased against the housing to increase tension on the torsion spring and generate force associated with the movement of the first and second jaw members relative to one another.