End effector for use with a surgical fastening instrument

• US 9,179,911 B2
• Filed: 05/23/2014
• Issued: 11/10/2015
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Morgan, Jerome R., Shelton, Frederick E. IV
• Primary Examiner(s): Lopez, Michelle
• Application Number:
  US14/286,599
• Publication Number:
  US 20140263571A1
• Time in Patent Office: 536 Days
• Field of Search: 227/175.1, 227/176.1, 227/180.1
• US Class Current: 1/1
• CPC Class Codes: A61B 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• 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 17/072 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 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/11 for performing anastomosis; Buttons for anastomosis
• CPC Class Codes: A61B 17/1114 of the digestive tract, e.g. bowels or oesophagus
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 17/34 Trocars; Puncturing needles pointed biopsy instruments A61B10/0233; devices for piercing the ear-lobes A44C7/001; seals or hemostasis valves A61M39/06
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/00128 related to intensity or progress of surgical action
• CPC Class Codes: A61B 2017/00539 hydraulically
• CPC Class Codes: A61B 2017/00831 Material properties
• CPC Class Codes: A61B 2017/00862 elastic or resilient
• CPC Class Codes: A61B 2017/0641 having at least three legs as part of one single body
• CPC Class Codes: A61B 2017/07228 Arrangement of the staples
• 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 2017/0725 : with settable gap between anvil and cartridge, e.g. for different staple heights at different shots
• CPC Class Codes: A61B 2017/07257 : characterised by its anvil
• CPC Class Codes: A61B 2017/07264 : characterised by its staple forming cavities, e.g. geometry or material
• CPC Class Codes: A61B 2017/07271 : characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 : characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 : characterised by its cutter
• CPC Class Codes: A61B 2017/2932 : Transmission of forces to jaw members
• CPC Class Codes: A61B 2017/2943 : Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/320052 : Guides for cutting instruments
• CPC Class Codes: A61B 2018/00666 : using a threshold value
• CPC Class Codes: A61B 2090/032 : pressure limiting, e.g. hydrostatic
• CPC Class Codes: A61B 2090/036 : abutting on tissue or skin
• CPC Class Codes: A61B 2090/065 : for measuring contact or contact pressure
• CPC Class Codes: A61B 2090/0811 : for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 90/03 : Automatic limiting or abutting means, e.g. for safety

Abstract

An end effector comprising a first jaw, a second jaw, and a firing member is disclose. The firing member, in various embodiments, further comprises a first portion configured to contact one of the first jaw and the second jaw, and a second portion configured to contact one of the first jaw and the second jaw. The first portion can be comprised of a first material. The firing member can further comprise an annex engaged with the first portion comprised of an annex material which is different than the first material. In various instances, the first portion and the second portion are configured to co-operatively set a tissue gap distance between the first jaw and the second jaw.

Claims

1. A disposable end effector for use with a surgical fastening instrument, said disposable end effector comprising:

a proximal end configured to be attached to a shaft of the surgical fastening instrument;

a distal end;

a first jaw;

a second jaw rotatably coupled relative to said first jaw, wherein one of said first jaw and said second jaw is movable between an open position and a closed position relative to the other of said first jaw and said second jaw;

a plurality of fastener cavities;

a plurality of fasteners, wherein said fasteners are removably positioned in said fastener cavities; and

a tissue cutting member movable toward said distal end, wherein said tissue cutting member comprises;

a knife edge;

a first camming member configured to engage said first jaw;

a second camming member configured to engage said second jaw, wherein said first camming member and said second camming member are configured to co-operatively set a tissue gap between said first jaw and said second jaw; and

an affix extending from one of said first camming member and said second camming member, wherein said affix is configured to facilitate in setting the tissue gap between said first jaw and said second jaw.

2. The disposable end effector of claim 1, wherein said second jaw is rotatable relative to said first jaw, wherein said second jaw comprises an anvil, and wherein said first jaw comprises said fastener cavities.

3. The disposable end effector of claim 1, wherein said first camming member and said second camming member are comprised of a first material, and wherein said affix is comprised of a second material which is different than said first material.

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

a proximal end configured to be attached to a shaft of the surgical stapling instrument;

a distal end;

a pair of jaws movable between an open condition and a closed condition;

a plurality of staple cavities;

a plurality of staples, wherein said staples are removably positioned in said staple cavities; and

a knife member movable toward said distal end, wherein said knife member comprises;

a cutting portion;

a first foot configured to engage said first jaw;

a second foot configured to engage said second jaw;

a first surface comprising a first pad, wherein said first pad is comprised of a material which is different than said first surface; and

a second surface comprising a second pad, wherein said second pad is comprised of a material which is different than said second surface, and wherein said first pad and said second pad are configured to facilitate the closing of said pair of jaws.

5. An effector comprising:

a first jaw;

a second jaw, wherein one of said first jaw and said second jaw is movable between an open position and closed positions relative to the other of said first jaw and said second jaw;

a plurality of fastener cavities;

a plurality of fasteners, wherein said fasteners are removably positioned in said fastener cavities; and

a translatable firing member, wherein said firing member comprises;

a first portion configured to contact said first jaw, wherein said first portion is comprised of a first material;

a second portion configured to contact said second jaw; and

an attachment extending from said first portion configured to contact one of said first jaw and said second jaw, wherein said attachment is comprised of an attachment material which is different than said first material.

6. The end effector of claim 5, wherein said attachment material comprises a resilient material.

7. The end effector of claim 5, wherein said first portion and said second portion are configured to co-operatively set a tissue gap distance between said first jaw and said second jaw.

8. The end effector of claim 7, wherein said attachment is configured to contact a drive surface on one of said first jaw and said second jaw when said first portion and said second portion are setting the tissue gap distance between said first jaw and said second jaw.

9. An end effector, comprising:

a first jaw comprising a first tissue engaging surface;

a second jaw comprising a second tissue engaging surface, wherein said first tissue engaging surface and said second tissue engaging surface comprise a tissue engaging interface, and wherein one of said first jaw and said second jaw is movable between an open position and closed positions relative to the other of said first jaw and said second jaw;

a contact surface facing away from said tissue engaging interface;

a plurality of fasteners, wherein said fasteners are removably positioned within said end effector; and

a longitudinally movable member, wherein said movable member comprises;

a cutting surface;

a first contact member configured to contact said first jaw;

a second contact member configured to contact said second jaw; and

a projection extending from one of said first contact member and said second contact member, wherein said first contact member, said second contact member, and said projection are configured to co-operatively set a tissue gap between said first jaw and said second jaw, and wherein said projection is configured to contact said contact surface.

10. The end effector of claim 9, wherein said projection is comprised of a resilient material.

11. The end effector of claim 9, wherein said first contact member and said second contact member are comprised of a first material, and wherein said projection is comprised of a second material which is different than said first material.

12. An end effector, comprising:

a first jaw comprising a first outer surface;

a second jaw comprising a second outer surface, wherein one of said first jaw and said second jaw is movable between an open position and closed positions relative to the other of said first jaw and said second jaw;

a plurality of staple cavities;

a plurality of staples, wherein said staples are removably positioned in said staple cavities; and

a longitudinally translatable firing member, wherein said firing member comprises;

a first member configured to contact said first jaw;

a second member configured to contact said second jaw; and

a compliant protrusion attached to one of said first member and said second member, wherein said compliant protrusion is configured to contact one of said first jaw and said second jaw, and wherein said compliant protrusion is comprised of a material which is different than said first member and said second member.

13. The end effector of claim 12, wherein said first member, said second member, and said compliant protrusion are configured to co-operatively set a tissue gap between said first jaw and said second jaw.