US 12,076,009 B2
Tissue guide for curved end effectors
Jeevan Shankar Setty Maddur, Bangalore (IN); Shaohui Shi, Shanghai (CN); Sridharan Varadhan, Hyderabad (IN); Xini Zhang, Shanghai (CN); Syed Sarfraz Ahamed, Shanghai (CN); and Manojit Hazra, Hyderabad (IN)
Assigned to Covidien LP, Mansfield, MA (US)
Appl. No. 17/797,196
Filed by Covidien LP, Mansfield, MA (US)
PCT Filed Feb. 3, 2020, PCT No. PCT/CN2020/074175
§ 371(c)(1), (2) Date Aug. 3, 2022,
PCT Pub. No. WO2021/155483, PCT Pub. Date Aug. 12, 2021.
Prior Publication US 2023/0052972 A1, Feb. 16, 2023
Int. Cl. A61B 17/072 (2006.01)
CPC A61B 17/072 (2013.01) [A61B 2017/07221 (2013.01); A61B 2017/07257 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A surgical stapling instrument comprising:
an elongate body portion defining a longitudinal axis and having a proximal portion and a distal portion; and
an end effector supported on the distal portion of the elongated body portion, the end effector including:
a frame having a base portion and a jaw portion, the base portion being secured to the distal portion of the elongate body portion;
an anvil assembly supported on the jaw portion, the anvil assembly including an L-shaped protrusion fixedly mounted on an exterior surface of the anvil assembly and that extends proximally from the jaw portion towards the base portion of the frame of the end effector;
a cartridge assembly releasably supported on the base portion, the cartridge assembly including a housing and a tissue guide, the tissue guide moveable from a retracted position to an advanced position relative to the housing of the cartridge assembly; and
a pusher assembly disposed within the base portion of the frame of the end effector, the pusher assembly being configured to move the tissue guide from the retracted position to the advanced position such that the tissue guide engages the L-shaped protrusion of the anvil assembly to releasably retain the tissue guide in the advanced position.