US 12,121,237 B2
Surgical stapling apparatus with tissue gap lock
Yanjun Jiao, Shanghai (CN); Xiliang Zhang, Shanghai (CN); and Yuandong Tan, Shanghai (CN)
Assigned to Covidien LP, Mansfield, MA (US)
Appl. No. 17/917,749
Filed by Covidien LP, Mansfield, MA (US)
PCT Filed Apr. 28, 2020, PCT No. PCT/CN2020/087425
§ 371(c)(1), (2) Date Oct. 7, 2022,
PCT Pub. No. WO2021/217404, PCT Pub. Date Nov. 4, 2021.
Prior Publication US 2023/0157694 A1, May 25, 2023
Int. Cl. A61B 17/064 (2006.01); A61B 17/115 (2006.01)
CPC A61B 17/1155 (2013.01) 20 Claims
OG exemplary drawing
 
1. A surgical stapling apparatus, comprising:
a handle assembly including a stationary handle and a trigger, the handle assembly further including a trigger lock that is pivotably coupled to the stationary handle and selectively engageable with the trigger to prevent movement of the trigger relative to the stationary handle, the trigger coupled to a firing link having a catch thereon, the trigger lock having a latch assembly;
an elongated central body portion extending distally from the handle assembly to a distal end portion;
an end effector supported on the distal end portion of the elongated central body portion, the end effector having an anvil assembly and a cartridge assembly, the anvil and cartridge assemblies positionable between an unclamped position and a clamped position to selectively grasp tissue therebetween, the trigger lock and the latch assembly selectively engageable to lock the anvil and cartridge assemblies in the clamped position; and
a drive screw assembly having an engagement tooth engageable with a pivot member supported by the firing link to maintain the anvil and cartridge assemblies in the clamped position.