US 12,295,573 B2
Stapling device with end effector having bottom guide member
Tingting Jin, Shanghai (CN); Xiliang Zhang, Shanghai (CN); and Zhaokai Wang, Shanghai (CN)
Assigned to Covidien LP, Mansfield, MA (US)
Appl. No. 18/284,772
Filed by Covidien LP, Mansfield, MA (US)
PCT Filed Mar. 31, 2021, PCT No. PCT/CN2021/084233
§ 371(c)(1), (2) Date Sep. 28, 2023,
PCT Pub. No. WO2022/205025, PCT Pub. Date Oct. 6, 2022.
Prior Publication US 2024/0180551 A1, Jun. 6, 2024
Int. Cl. A61B 17/072 (2006.01)
CPC A61B 17/072 (2013.01) [A61B 2017/07221 (2013.01); A61B 2017/07271 (2013.01); A61B 2017/07285 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A stapling device comprising:
an elongate body having a proximal portion and a distal portion;
a clamp slide assembly having a distal portion that defines a pocket, the clamp slide assembly movable between retracted and advanced positions;
a thrust bar having a proximal portion and a distal portion; and
an end effector including:
a cartridge module releasably received within the pocket of the clamp slide assembly, the cartridge module including a cartridge body, a knife assembly, a pusher, and staples, the cartridge body defining a knife slot and staple receiving slots positioned on each side of the knife slot, each of the staple receiving slots receiving one of the staples, the knife assembly including a knife holder and a cutting blade, the pusher including fingers that are received in the staple receiving slots, the knife assembly and the pusher movable within a cavity of the cartridge body from retracted to advanced positions to eject the staples from the cartridge body and to advance the cutting blade from a position recessed within the cartridge body to a position extending from the knife slot of the cartridge body;
an end effector frame having a distal transverse portion, a proximal transverse portion, and a longitudinal portion interconnecting the distal and proximal transverse portions at spaced locations, the distal and proximal transverse portions defining a recess that receives the distal portion of the clamp slide assembly and the distal portion of the thrust bar, the longitudinal portion of the end effector frame having an inwardly facing surface that defines a channel that extends longitudinally along the inwardly facing surface;
a pin supported by the end effector frame and extending across the channel;
an anvil supported on the distal transverse portion of the end effector frame; and
a guide assembly supported on the longitudinal portion of the end effector frame, the guide assembly including a guide member having a body, the body including a lower portion and a guide portion that extends distally of the lower portion, the lower portion received within the channel and defining a longitudinal slot through which the pin extends, the body defining a recess that is defined in part by an abutment surface that is aligned with the cutting blade, the guide member movable from a retracted position to an advanced position in response to movement of the knife assembly from its retracted position to its advanced position.