Surgical instrument system comprising a magnetic lockout

Patent metadata

Field	Value
Publication number	US-11147554-B2
Application number	US-201916440425-A
Country	US
Kind code	B2
Filing date	Jun 13, 2019
Priority date	Apr 18, 2016
Publication date	Oct 19, 2021
Grant date	Oct 19, 2021

Abstract

Surgical instrument systems comprising lockouts are disclosed. The systems comprise a firing member, a staple cartridge assembly, and a lockout member. The lockout member, movable between an unlocked position and a locked position, is configured to prevent the firing member from being advanced through the staple cartridge assembly when the lockout member is in its locked position.

First claim

What is claimed is:

1. A surgical end effector system, comprising:
a firing member;
a staple cartridge assembly configured to be installed into said end effector system, said staple cartridge assembly comprising:
a cartridge body;
a plurality of staples removably stored within said cartridge body;
a sled comprising a magnet, wherein said firing member is configured to move said sled between an unfired position and a partially-fired position during a staple firing stroke;
an installed, ready-to-fire configuration wherein said sled is in said unfired position; and
a false configuration; and

a lockout member, comprising:
a locked position, wherein said lockout member is configured to prevent said firing member from firing said staples from said staple cartridge assembly when said lockout member is in said locked position; and
an unlocked position, wherein said lockout member is configured to permit said firing member to fire said staples from said staple cartridge assembly when said lockout member is in said unlocked position;

wherein said magnet is configured to levitate said lockout member into said unlocked position when said staple cartridge assembly is in said installed, ready-to-fire configuration, and wherein said lockout member is biased into said locked position when said staple cartridge assembly is in said false configuration.

2. The surgical end effector system of claim 1 , further comprising a spine portion, wherein said magnet comprises a first magnet, and wherein said lockout member comprises:
a proximal portion attached to said spine portion;
a distal portion comprising a second magnet, wherein said first magnet and said second magnet are orientated so that like poles face each other, and wherein said first magnet and said second magnet repel each other when said staple cartridge assembly is in said installed, ready-to-fire configuration; and
a lock portion configured to engage said firing member.

3. The surgical end effector system of claim 2 , wherein said proximal portion is fixedly attached to said spine portion of said surgical end effector system, and wherein said lockout member is configured to deflect into said unlocked position when said first magnet and said second magnet repel each other.

4. The surgical end effector system of claim 2 , wherein said proximal portion is rotatably attached to said spine portion of said surgical end effector system, and wherein said lockout member is configured to rotate into said unlocked position when said first magnet and said second magnet repel each other.

5. The surgical end effector system of claim 2 , wherein said locked position comprises a first locked position and a second locked position, and wherein said lock portion is configured to permit said firing member to move between said first locked position and said second locked position to clamp and unclamp tissue.

6. The surgical end effector system of claim 1 , wherein said staple cartridge assembly is in said false configuration when said staple cartridge assembly is not installed within said end effector system.

7. The surgical end effector system of claim 1 , wherein said staple cartridge assembly is in said false configuration when said staple cartridge assembly is installed within said end effector system but said sled is in said partially-fired position.

8. The surgical end effector system of claim 1 , wherein said firing member comprises a lockout pin configured to engage said lockout member during said staple firing stroke.

9. An end effector, comprising:
a firing member movable between a proximal position and a distal position;
a staple cartridge assembly removably positionable in said end effector, wherein said staple cartridge assembly comprises:
a cartridge body;
a plurality of staples removably positioned within said cartridge body; and
a sled comprising a magnet, wherein said firing member is configured to move said sled from a starting position toward said distal position during a staple firing stroke; and

a lockout system, configurable between:
a locked configuration, wherein said lockout system is configured to prevent said firing member from moving toward said distal position; and
an unlocked configuration, wherein said lockout system is configured to permit said firing member to move toward said distal position;

wherein said magnet is configured to move said lockout system toward said unlocked configuration when said sled is in said starting position, and wherein said lockout system is moved into said locked configuration once said firing member has moved to said proximal position after moving said sled toward said distal position.

10. The end effector of claim 9 , further comprising a spine portion, wherein said magnet comprises a first magnet, and wherein said lockout system comprises:
a proximal portion operably coupled to said spine portion;
a distal portion comprising a second magnet, wherein said first magnet and said second magnet are orientated so that like poles face each other, and wherein said first magnet and said second magnet repel each other when said sled is in said starting position; and
a lock portion configured to engage said firing member.

11. The end effector of claim 10 , wherein said proximal portion is fixedly attached to said spine portion, and wherein said lockout system is configured to deflect into said unlocked configuration when said first magnet and said second magnet repel each other.

12. The end effector of claim 10 , wherein said proximal portion is rotatably coupled to said spine portion, and wherein said lockout system is configured to rotate into said unlocked configuration when said first magnet and said second magnet repel each other.

13. The end effector of claim 9 , wherein said lockout system is configured in said locked configuration when said staple cartridge assembly is not positioned within said end effector.

14. An end effector, comprising:
a firing member;
a staple cartridge assembly removably positionable in said end effector, wherein said staple cartridge assembly comprises:
a cartridge body;
a plurality of staples removably positioned within said cartridge body; and
a sled comprising a magnet, wherein said firing member is configured to move said sled from a proximal position toward a distal position during a staple firing stroke; and

a blocking member movable between:
a blocked position, wherein said blocking member is configured to block said firing member from moving toward said distal position; and
an unblocked position, wherein said blocking member is configured to permit said firing member to move toward said distal position;

wherein said magnet is configured to move said blocking member toward said unblocked position when said sled is in said proximal position, and wherein said blocking member is configured move toward said blocked position as said firing member moves said sled toward said distal position.

15. The end effector of claim 14 , further comprising a spine portion, wherein said magnet comprises a first magnet, and wherein said blocking member comprises:
a proximal portion operably coupled to said spine portion;
a distal portion comprising a second magnet, wherein said first magnet and said second magnet are orientated so that like poles face each other, and wherein said first magnet and said second magnet repel each other when said sled is in said proximal position; and
a block portion configured to engage said firing member.

16. The end effector of claim 15 , wherein said proximal portion is fixedly attached to said spine portion, and wher

Assignees

• Ethicon Llc
• Cilag Gmbh Int

Inventors

• Aronhalt Taylor W
• Wise Austin E
• Hunter Morgan R
• Shelton Iv Frederick E
• Harris Jason L

Classifications

• A61B2017/00398

  using powered actuators, e.g. stepper motors, solenoids · CPC title

• A61B2017/00473

  Distal part, e.g. tip or head (A61B2017/00464 takes precedence) · CPC title

• A61B17/07207 Primary

  the staples being applied sequentially · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B2017/07271

  characterised by its cartridge · CPC title