US 12,268,389 B2
Surgical stapling device with firing lockout
Justin P. Williams, Southbury, CT (US); and Christopher W. Kaswer, Avon, CT (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Oct. 31, 2022, as Appl. No. 17/977,020.
Claims priority of provisional application 63/278,586, filed on Nov. 12, 2021.
Prior Publication US 2023/0149016 A1, May 18, 2023
Int. Cl. A61B 17/072 (2006.01); A61B 17/28 (2006.01)
CPC A61B 17/072 (2013.01) [A61B 17/2833 (2013.01); A61B 2017/07257 (2013.01); A61B 2017/07271 (2013.01); A61B 2017/07278 (2013.01); A61B 2017/07285 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A stapling device comprising:
an anvil section having a proximal portion, a distal portion, and spaced beams, the proximal portion of the anvil section including a hand grip, and the distal portion of the anvil section including an anvil plate supported on the spaced beams;
a cartridge section including a channel member defining a channel, the channel including a proximal portion and a distal portion, the channel member adapted to be coupled to the anvil section to facilitate movement of the anvil section in relation to the cartridge section between open and clamped positions;
a firing assembly supported within the proximal portion of the channel and including a drive beam and a trigger;
a clamp member supported on the cartridge section and movable from unclamped position to a clamped position to move the anvil section in relation to the cartridge section from the open position to the clamped position; and
a staple cartridge releasably supported within the distal portion of the channel of the channel member of the cartridge section, the staple cartridge including a cartridge body, staples, pushers, an actuation sled, a knife assembly, and a lockout assembly, the cartridge body having a proximal portion and a distal portion and defining a central knife slot and staple receiving pockets positioned on opposite sides of the central knife slot, each of the staple receiving pockets receiving one of the staples and one of the pushers, the actuation sled positioned within the proximal portion of the cartridge body and being movable through the cartridge body into engagement with the pushers to eject the staples from the staple receiving pockets, the knife assembly including a knife bar having a cutting member, the cutting member including a member body having a distal edge and a cutting blade formed on the distal edge of the member body, the cutting blade positioned within the central knife slot and having an exposed portion extending above the cartridge body, the lockout assembly including a lockout member pivotably coupled to the proximal portion of the cartridge body and movable from an unlocked position to a locked position, the lockout member having a base portion that defines a knife slot and includes a blade guard positioned on each side of the knife slot of the base portion, the knife slot of the base portion of the lockout member receives the drive beam of the firing assembly, the blade guards positioned and configured to shield the exposed portion of the cutting blade when the lockout member is in the unlocked position while leaving the member body of the cutting member exposed, wherein in the locked position, the lockout member obstructs movement of the anvil section in relation to the cartridge section from the open position to the clamped position.