Circular stapling system comprising an incisable tissue support

Patent metadata

Field	Value
Publication number	US-2017281189-A1
Application number	US-201615089312-A
Country	US
Kind code	A1
Filing date	Apr 1, 2016
Priority date	Apr 1, 2016
Publication date	Oct 5, 2017
Grant date	—

Abstract

A surgical instrument comprising an end effector is disclosed. The end effector comprises a staple cartridge including a cartridge body comprising an annular array of staple cavities, staples removably stored in the staple cavities, a firing drive configured to eject the staples from the staple cavities, and a cutting member circumscribed by the staple cavities. The end effector further comprises an anvil including a tissue compression surface, forming surfaces configured to deform the staples and a tissue block. The anvil is movable toward the cartridge body to compress tissue between the cartridge body and the tissue block and the cutting member is configured to incise the tissue and the tissue block during a cutting stroke of the cutting member.

First claim

What is claimed is:

1 . An end effector for use with a circular surgical stapling instrument, said end effector comprising:
a staple cartridge, comprising:
a cartridge body comprising an annular array of staple cavities;
staples removably stored in said staple cavities;
a firing drive configured to eject said staples from said staple cavities; and
an annular cutting member, wherein said annular cutting member is surrounded by said annular array of staple cavities; and an anvil, comprising:
a tissue compression surface;
forming surfaces configured to deform said staples; and
a tissue support, wherein said anvil is movable toward said cartridge body to compress tissue between said cartridge body and said tissue support, and wherein said cutting member is configured to incise the tissue and said tissue support during a cutting stroke of said cutting member.

2 . The end effector of claim 1 , wherein said tissue support is aligned with said tissue compression surface.

3 . The end effector of claim 1 , wherein said tissue support comprises:
a first annular wall; a second annular wall; and lateral walls connecting said first annular wall and said second annular wall.

4 . The end effector of claim 3 , wherein said cutting member is configured to incise said lateral walls.

5 . The end effector of claim 3 , wherein said tissue support further comprises a cavity defined intermediate said lateral walls.

6 . The end effector of claim 5 , wherein said cavity comprises an annular cavity.

5 . effector of claim 5 , wherein said cavity is enclosed.

8 . The end effector of claim 5 , wherein said cavity comprises at least one enclosed side and at least one open side.

9 . The end effector of claim 3 , wherein said lateral walls comprise an annular array of lateral walls, and wherein said tissue support further comprises an annular array of cavities defined within said annular array of lateral walls.

10 . The end effector of claim 3 , wherein said first annular wall is shorter than said second annular wall.

11 . The end effector of claim 1 , wherein said tissue supporting surface comprises an annular recess aligned with said annular cutting member.

12 . The end effector of claim 1 , wherein said tissue support comprises:
a first annular wall; a second annular wall; and radial walls connecting said first annular wall and said second annular wall.

13 . The end effector of claim 1 , wherein said tissue support comprises:
an annular wall; and lateral walls extending from said annular wall.

14 . The end effector of claim 1 , wherein said tissue support extends above said tissue compression surface.

15 . The end effector of claim 1 , wherein said tissue support extends above said staple forming surfaces.

16 . An end effector of a circular surgical stapling instrument, said end effector comprising:
a staple cartridge, comprising:
a cartridge body comprising an annular array of staple cavities;
staples removably stored in said staple cavities;
a firing drive configured to eject said staples from said staple cavities; and
a cutting member, wherein said cutting member is circumscribed by said annular array of staple cavities; and
an anvil, comprising:
a tissue compression surface;
forming surfaces configured to deform said staples; and
a tissue block, wherein said anvil is movable toward said cartridge body to compress tissue between said cartridge body and said tissue block, and wherein said cutting member is configured to incise the tissue and said tissue block during a cutting stroke of said cutting member.

17 . The end effector of claim 16 , wherein said tissue block is aligned with said tissue compression surface.

18 . The end effector of claim 16 , wherein said tissue block extends above said tissue compression surface.

19 . The end effector of claim 16 , wherein said tissue block extends above said staple forming surfaces.

20 . An anvil for use with a circular surgical stapling instrument comprising a cartridge body and a cutting member during a surgical technique, said anvil comprising:
a frame; a shaft extending from said frame; a tissue compression surface; forming surfaces configured to deform staples ejected from the surgical stapling instrument during a step in the surgical technique; and a tissue block, wherein said anvil is movable toward the surgical stapling instrument to compress tissue between the cartridge body and said tissue block, wherein the tissue has formed staples therein from a previous step in the surgical technique, wherein the cutting member and said tissue block are co-operatively configured to incise the previously stapled tissue and said tissue block during a cutting stroke of the cutting member, and wherein said tissue block is configured to prevent the formed staples from creating more than localized yielding in said tissue block during the cutting stroke.

Assignees

• Ethicon Endo Surgery Llc

Inventors

• Nalagatla Anil K
• Harris Jason L
• Shelton Iv Frederick E
• Morgan Jerome R

Classifications

• A61B2090/0814

  Preventing re-use · CPC title

• A61B2017/00305

  Constructional details of the flexible means · CPC title

• A61B2017/2932

  Transmission of forces to jaw members · CPC title

• A61B2017/07235

  containing different staples, e.g. staples of different shapes, sizes or materials · CPC title

• A61B2017/00407

  Ratchet means · CPC title