Granted Patent B2

US 12,245,764 · App. 17/516,091 · Granted Mar 11, 2025

Inventors: Mark D. Overmyer (Cincinnati, OH); Jeffrey S. Swayze (West Chester, OH); Andrew T. Beckman (Cincinnati, OH); Robert L. Koch, Jr. (Cincinnati, OH); Frederick E. Shelton, IV (Hillsboro, OH); Jason L. Harris (Lebanon, OH)

Assignee: Cilag GmbH International

A61B17/07207A61B17/072A61B34/30A61B34/37A61B34/71A61B2017/00017A61B2017/00367A61B2017/00398A61B2017/00407A61B2017/0046A61B2017/00464A61B2017/00473A61B2017/00477A61B2017/07228A61B2017/0725A61B2017/07257A61B2017/07264A61B2017/07271A61B2017/07278A61B2017/07285A61B2017/2902A61B2017/2912A61B2017/2923A61B2017/2927A61B2017/2929A61B2017/2936A61B2017/2946A61B2034/302A61B2090/0808A61B2090/0814A61B2090/0818

Abstract

Claims (40)

1. A stapling attachment for use with a surgical system, said stapling attachment comprising:

a staple cartridge, comprising:

a cartridge body including staple cavities;

staples removably stored in said staple cavities; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said staple cavities;

an end effector, comprising:

a cartridge channel configured to receive said staple cartridge and including a longitudinal slot having an upper cam surface;

an anvil configured to deform said staples and including a longitudinal slot having a longitudinally curved bottom cam surface; and

a lock spring;

a firing member, comprising:

a cutting edge configured to cut the tissue of a patient during said firing stroke;

a first cam member configured to engage said upper cam surface of said longitudinal slot of said cartridge channel during said firing stroke; and

a second cam member configured to engage said longitudinally curved bottom cam surface of said longitudinal slot of said anvil during said firing stroke; and

a lock rotatable between an unlocked position and a locked position, wherein said sled is configured to rotate said lock from said locked position to said unlocked position when said staple cartridge is seated in said cartridge channel and said sled is in said unfired position, and wherein said lock is rotatable from said unlocked position to said locked position by said lock spring when either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position, wherein a portion of said lock enters a lockout notch when said lock is biased by said lock spring into said locked position and wherein a distal shoulder of said lock is supported by a proximal ledge of the sled when said lock is in said unlocked position and is located over said lockout notch.

2. The stapling attachment of claim 1 , wherein said lock spring comprises a distal end which exerts a biasing downward force on said lock to rotate said lock toward said locked position.

3. An end effector for use with a surgical system, said end effector comprising:

a staple cartridge, comprising:

a cartridge body;

staples, wherein each said staple is at least partially stored in said cartridge body; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said cartridge body;

a cartridge channel configured to receive said staple cartridge;

an anvil configured to deform said staples;

a firing system, comprising:

a biasing member;

a firing member movable distally to advance said sled and eject said staples during said firing stroke, wherein said firing member comprises a first cam and a second cam; and

a lock rotatable relative to said firing member between an unlocked position and a locked position, wherein said sled is configured to rotate said lock from said locked position toward said unlocked position as said staple cartridge is inserted in said cartridge channel when said sled is in said unfired position, and wherein said lock is rotatable from said unlocked position toward said locked position by said biasing member when either said staple cartridge is not in said cartridge channel or said sled is not in said unfired position, wherein a portion of said lock enters a lockout notch when said lock is biased by said biasing member into said locked position, wherein a portion of said lock enters a lockout notch when said lock is biased by said biasing member into said locked position and wherein a distal shoulder of said lock is supported by a proximal ledge of the sled when said lock is in said unlocked position and is located over said lockout notch.

4. The end effector of claim 3 , wherein said biasing member comprise a distal end which exerts a biasing downward force on said lock to rotate said lock toward said locked position.

5. An end effector for use with a surgical system, said end effector comprising:

a staple cartridge, comprising:

a cartridge body;

staples, wherein each said staple is at least partially stored in said cartridge body; and

a sled movable between an unfired position and a fired position during a firing stroke to eject said staples from said cartridge body;

a cartridge channel configured to receive said staple cartridge, wherein said cartridge channel includes a lockout notch;

an anvil configured to deform said staples;

a firing system, comprising:

a firing member movable distally to advance said sled and eject said staples during said firing stroke, wherein said firing member comprises a cam; and

a lock rotatable relative to said firing member, wherein said lock includes a distal shoulder;

a first cam surface configured to rotate said lock into the lockout notch of the cartridge channel when said staple cartridge is inserted into said cartridge channel and said sled is in said fired position, wherein said firing member is prevented from performing said firing stroke when said lock is positioned in said lockout notch; and

a second cam surface configured to contact the distal shoulder of said lock to move said lock out of said lockout notch, wherein said firing member is permitted to perform said firing stroke when said lock is not positioned in said lockout notch and said staple cartridge is inserted into said cartridge channel with said sled in said unfired position,

wherein a distal shoulder of said lock is supported by a proximal ledge of the sled when said second cam moves said lock out of said lockout notch such that said distal shoulder of said lock is located over said lockout notch.

Assignments (3)

Continuity (3)

References Cited (400)