US 12,004,739 B2
Reload assembly with knife carrier lockout
David Valentine, Hamden, CT (US); Joseph Eisinger, Northford, CT (US); Ramiro Cabrera, Cheshire, CT (US); Patrick Mozdzierz, Glastonbury, CT (US); Christopher Penna, Guilford, CT (US); and Justin Williams, Southbury, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 7, 2022, as Appl. No. 17/961,742.
Application 17/961,742 is a division of application No. 16/890,334, filed on Jun. 2, 2020, granted, now 11,464,510.
Claims priority of provisional application 62/878,789, filed on Jul. 26, 2019.
Prior Publication US 2023/0045604 A1, Feb. 9, 2023
Int. Cl. A61B 17/15 (2006.01); A61B 17/068 (2006.01); A61B 17/072 (2006.01); A61B 17/115 (2006.01)
CPC A61B 17/0686 (2013.01) [A61B 17/1155 (2013.01); A61B 2017/07257 (2013.01); A61B 2017/07285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical stapling device comprising:
an adaptor assembly having a proximal end portion and a distal end portion; and
a reload assembly supported on the distal end portion of the adaptor assembly, the reload assembly including:
a shell housing including an outer housing portion and an inner housing portion;
a staple cartridge supporting staples;
a staple pusher supported movable from a retracted position to an advanced position to eject the staples from the staple cartridge;
a staple actuator positioned to engage the staple pusher, the staple actuator having a stop surface and movable from an actuator retracted position to an actuator advanced position to move the staple pusher from a pusher retracted position to a pusher advanced position to eject the staples from the staple cartridge, the staple actuator and the staple pusher defining a through bore;
a knife carrier supported within the through bore and movable between a carrier retracted position and a carrier advanced position, the knife carrier defining a longitudinal axis and supporting a locking member that is formed from a resilient material, the locking member aligned with the stop surface of the staple actuator when the staple actuator is in the actuator advanced position and the knife carrier is in the carrier retracted position to prevent readvancement of the knife carrier; and
a knife supported on the knife carrier.