FASTENER CARTRIDGE ASSEMBLY COMPRISING A CAM AND DRIVER ARRANGEMENT

• US 20130334287A1
• Filed: 08/20/2013
• Published: 12/19/2013
• Est. Priority Date: 08/31/2005
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Shelton, Frederick E. IV
• Granted Patent: US 9,795,382 B2
• Time in Patent Office: Days
• US Class Current: 227/180.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/0682 for applying U-shaped staples or clamps, e.g. without a forming anvil
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 2017/07235 containing different staples, e.g. staples of different shapes, sizes or materials
• CPC Class Codes: A61B 2017/07242 achieving different staple heights during the same shot, e.g. using an anvil anvil having different heights or staples of different sizes
• CPC Class Codes: A61B 2017/07264 characterised by its staple forming cavities, e.g. geometry or material
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395

Abstract

A surgical stapling device that comprises an end effector. According to various embodiments, the end effector comprises a circular anvil having a staple forming surface and a plurality of staples facing the staple forming surface of the anvil. The end effector also comprises a staple driver assembly comprising a plurality of staple drivers. Each staple driver supports one of the plurality of staples and is configured such that, when the staple driver assembly is actuated, each staple driver drives the staple into the staple forming surface of the anvil. A first quantity of the plurality of staple drivers has a first height and a second quantity of the plurality of staple drivers has a second height, wherein the first height is less than the second height.

Claims

1. A fastener cartridge assembly, comprising:

a cartridge body;

a proximal end;

a distal end;

a plurality of fastener cavities;

a slot configured to receive a cutting member;

a row of first fasteners removably stored in said cartridge body, wherein said row of first fasteners extends between said proximal end and said distal end along a first side of said slot; and

a row of second fasteners removably stored in said cartridge body, wherein said row of second fasteners extends between said proximal end and said distal end along a second side of said slot;

a first fastener driver configured to support a first fastener;

a second fastener driver configured to support a second fastener;

a sled movable toward said distal end, wherein said sled comprises;

a first ramp configured to lift said first fastener driver and said first fastener toward an anvil to deform said first fastener to a first fired height; and

a second ramp configured to lift said second fastener driver and said second fastener toward the anvil to deform said second fastener to a second fired height, wherein said second fired height is different than said first fired height, and wherein said first ramp is positioned distally with respect to said second ramp.

2. The fastener cartridge assembly of claim 1, wherein said first fired height is shorter than said second fired height.

3. The fastener cartridge assembly of claim 1, further comprising said cutting member.

4. The fastener cartridge assembly of claim 3, wherein said cutting member is slidable longitudinally between said proximal end and said distal end.

5. The fastener cartridge assembly of claim 1, wherein said row of first fasteners includes a first distal-most fastener, wherein said row of second fasteners includes a second distal-most fastener, and wherein said first distal-most fastener is positioned distally with respect to said second distal-most fastener.

6. An end effector for use with a surgical fastening instrument, said end effector comprising:

an anvil;

a cartridge body;

a proximal end;

a distal end;

a plurality of fastener cavities;

a slot configured to receive a cutting member;

a row of first fasteners removably stored in said cartridge body, wherein said row of first fasteners extends between said proximal end and said distal end along a first side of said slot; and

a row of second fasteners removably stored in said cartridge body, wherein said row of second fasteners extends between said proximal end and said distal end along a second side of said slot;

a first fastener driver configured to support a first fastener;

a second fastener driver configured to support a second fastener;

a sled movable toward said distal end, wherein said sled comprises;

a first ramp configured to lift said first fastener driver and said first fastener toward said anvil to deform said first fastener to a first fired height; and

a second ramp configured to lift said second fastener driver and said second fastener toward said anvil to deform said second fastener to a second fired height, wherein said second fired height is different than said first fired height, and wherein said first ramp is positioned distally with respect to said second ramp.

7. The end effector of claim 6, wherein said first fired height is shorter than said second fired height.

8. The end effector of claim 6, further comprising said cutting member.

9. The end effector of claim 8, wherein said cutting member is slidable longitudinally between said proximal portion and said distal portion.

10. The end effector of claim 6, wherein said row of first fasteners includes a first distal-most fastener, wherein said row of second fasteners includes a second distal-most fastener, and wherein said first distal-most fastener is positioned distally with respect to said second distal-most fastener.

11. An end effector for use with a surgical stapling instrument, said end effector comprising:

an anvil;

a cartridge body;

a proximal end;

a distal end;

a plurality of staple cavities;

a slot configured to receive a cutting member;

a row of first staples removably stored in said cartridge body, wherein said row of first staples extends between said proximal end and said distal end along a first side of said slot; and

a row of second staples removably stored in said cartridge body, wherein said row of second fasteners extends between said proximal end and said distal end along a second side of said slot;

a first fastener driver configured to support a first fastener;

a second fastener driver configured to support a second fastener;

a sled movable toward said distal end, wherein said sled comprises;

a first ramp configured to lift said first fastener driver and said first fastener toward said anvil to deform said first fastener to a first fired height; and

a second ramp configured to lift said second fastener driver and said second fastener toward said anvil to deform said second fastener to a second fired height, wherein said second fired height is different than said first fired height, and wherein said first ramp is staggered with respect to said second ramp.

12. The end effector of claim 11, wherein said first fired height is shorter than said second fired height.

13. The end effector of claim 12, further comprising said cutting member.

14. The end effector of claim 11, wherein said cutting member is slidable longitudinally between said proximal portion and said distal portion.

15. The end effector of claim 11, wherein said row of first staples includes a first distal-most staple, wherein said row of second staples includes a second distal-most staple, and wherein said first distal-most staple is positioned distally with respect to said second distal-most staple.