Surgical cutting and stapling instrument with self adjusting anvil

• US 20080078804A1
• Filed: 09/29/2006
• Published: 04/03/2008
• Est. Priority Date: 09/29/2006
• Status: Active Grant

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Uth, Joshua, Shelton, Frederick E.
• Granted Patent: US 8,360,297 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• 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, resorptive for implantable prostheses A61F2210/0004
• 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 for sutures A61B2017/0618
• 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 by marking A61B2090/395
• 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

A surgical instrument for being endoscopically or laparoscopically inserted into a surgical site for simultaneous stapling and severing of tissue includes an elongate channel that is configured to operably support a staple cartridge therein. An anvil is coupled to the elongate channel and is configured to interact therewith such that at least a mounting portion of the anvil can seatingly engage corresponding portions of the elongate channel at any one of a discrete number of predetermined locations to adjust a tissue clamping space between the anvil and the elongate channel in response to a thickness of tissue received between the elongate channel and the anvil and application of a closing motion to the anvil.

Claims

1. A surgical instrument, comprising:

a cartridge supporting assembly configured to operably support a staple cartridge therein; and

an anvil coupled to said cartridge supporting assembly and being configured to interact therewith such that at least a one mounting portion of said anvil can seatingly engage corresponding formations in said cartridge supporting assembly formed at a plurality of predetermined locations to adjust a tissue clamping space between said anvil and said cartridge supporting assembly in response to a thickness of tissue clamped between a cartridge supported in said cartridge supporting assembly and said anvil.

2. The surgical instrument of claim 1 wherein said formations comprise at least one series of detents formed in said cartridge supporting assembly and wherein each one of said mounting portions of said anvil corresponds to one said series of detents and is configured for engagement with any detent therein in response to the thickness of the tissue clamped between the anvil and the cartridge supported within the cartridge supporting assembly.

3. The surgical instrument of claim 2 wherein said anvil has a proximal end that is pivotally coupled to a proximal end of said cartridge supporting assembly.

4. The surgical instrument of claim 3 wherein each said mounting portion comprises a trunnion wherein each said trunnion corresponds to a corresponding one of said at least one series of detents.

5. The surgical instrument of claim 4 wherein said trunnions are each movably received in a corresponding elongated slot in said proximal end of said cartridge supporting assembly and wherein each said slot has a corresponding one of said series of detents formed therein for engagement by said trunnion received therein.

6. The surgical instrument of claim 4 further comprising a pawl formed on each said trunnion.

7. The surgical instrument of claim 6 wherein each said series of detents comprises a series of substantially V-shaped notches and wherein each said pawl has a point formed thereon adapted to be seatingly received within any one of said V-shaped notches in said corresponding series of V-shaped notches.

8. The surgical instrument of claim 6 further comprising a biasing member engaging a portion of said anvil such that each said pawl is biased into seating engagement with a corresponding first detent when no tissue is received between said anvil and said cartridge supporting assembly.

9. The surgical instrument of claim 1 wherein said anvil has a plurality of staple forming pockets therein and wherein said staple forming pockets are axially aligned with corresponding staples in the staple cartridge supported within said cartridge supporting assembly when said at least one mounting portion of said anvil is in seated engagement with any one of said detents formed in said cartridge supporting assembly.

10. The surgical instrument of claim 1 wherein said anvil further has an opening tab formed thereon for selective engagement by a closure tube assembly mounted adjacent said anvil and configured for selective engagement therewith.

11. A method for processing an instrument for surgery, said method comprising:

obtaining said surgical instrument of claim 1;

sterilizing said surgical instrument; and

storing said instrument in a sterile container.

12. A surgical instrument, comprising:

an elongate channel configured to operably support a staple cartridge therein; and

an anvil movably coupled to said elongate channel and configured to interact with at least one series of pivot nests in said elongate channel to selectively adjust a tissue clamping space between said anvil and a staple cartridge supported within said elongate channel in response to a thickness of tissue received between said anvil and the staple cartridge and application of a closing motion to said anvil.

13. The surgical instrument of claim 12 wherein said at least one series of pivot nests comprises two series of detents formed in said elongate channel, each said series of detents configured for selective seating engagement therewith by a corresponding pawl formed on said anvil.

14. A surgical instrument, comprising:

a handle assembly;

an elongate spine assembly coupled to said handle assembly;

an elongate channel distally coupled to said elongate spine assembly and configured to support a staple cartridge therein;

a selectively actuatable closure tube assembly movably received on said elongate spine assembly; and

an anvil movably coupled to said elongate channel and configured to receive opening and closing motions from said selectively actuatable closure tube assembly, said anvil further configured to seatingly engage any one of a number of corresponding formations in said elongate channel in response to a thickness of tissue clamped between said elongate channel and said anvil and application of a closing motion to said anvil.

15. The surgical instrument of claim 14 wherein said formations comprise at least one series of detents formed in said elongate channel and wherein a portion of said anvil corresponds to each of said series of detents and is configured for engagement with any detent therein in response to the thickness of the tissue clamped between the anvil and the elongate channel and the application of the closing motion to said anvil.

16. The surgical instrument of claim 15 wherein said anvil is pivotally coupled to said elongate channel by a pair of trunnions, each said trunnion corresponding to one of said at least one series of detents.

17. The surgical instrument of claim 16 wherein said trunnions are each movably received in a corresponding elongated slot in said elongate channel and wherein each said slot has a corresponding one of said series of detents formed therein for engagement by said trunnion received therein.

18. The surgical instrument of claim 16 wherein said portion of said anvil corresponding to said series of detents comprises a pawl formed on each said trunnion.

19. The surgical instrument of claim 18 further comprising a biasing member engaging a portion of said anvil such that each said pawl is biased into engagement with a corresponding first detent when no tissue is received between said anvil and said elongate channel.

20. The surgical instrument of claim 14 wherein said anvil has a plurality of staple forming pockets therein and wherein said staple forming pockets are axially aligned with corresponding staples in the staple cartridge supported within said elongate channel when said anvil is in seated engagement with any one of said formations in said elongate channel.