US 11,980,361 B2
Closure driving mechanism and medical stapler including the same
Teng Shan, Suzhou (CN); and Yuanyang Cao, Suzhou (CN)
Assigned to Touchstone International Medical Science Co., Ltd., Suzhou (CN)
Appl. No. 17/634,783
Filed by Touchstone International Medical Science Co., Ltd., Suzhou (CN)
PCT Filed Aug. 27, 2020, PCT No. PCT/CN2020/111792
§ 371(c)(1), (2) Date Feb. 11, 2022,
PCT Pub. No. WO2021/037154, PCT Pub. Date Mar. 4, 2021.
Claims priority of application No. 201910806840.X (CN), filed on Aug. 29, 2019; application No. 201910807054.1 (CN), filed on Aug. 29, 2019; application No. 201921424809.1 (CN), filed on Aug. 29, 2019; and application No. 201921425089.0 (CN), filed on Aug. 29, 2019.
Prior Publication US 2022/0323068 A1, Oct. 13, 2022
Int. Cl. A61B 17/068 (2006.01); A61B 17/115 (2006.01)
CPC A61B 17/068 (2013.01) [A61B 17/115 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A closure driving mechanism applied on a medical stapler, comprising a driving part and a cylinder body, wherein the driving part is connected with a closure pulling sheet of the stapler, and the driving part is located at a proximal side of the cylinder body, wherein a cavity is formed inside the cylinder body, and the cavity is provided with a one-way valve;
when the driving part moves toward a proximal side of the stapler, a volume of the cavity is increased, the one-way valve is opened, and the driving part drives the closure pulling sheet to move proximally, so as to close a head assembly of the stapler;
when the driving part moves toward a distal side of the stapler, the volume of the cavity is decreased, the one-way valve is closed, and the driving part drives the closure pulling sheet to move distally, so as to open the head assembly of the stapler.