Surgical anvil arrangements

• US 10,772,629 B2
• Filed: 06/27/2017
• Issued: 09/15/2020
• Est. Priority Date: 06/27/2017
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Shelton, IV, Frederick E., Nalagatla, Anil K., Morgan, Jerome R., Bakos, Gregory J., Harris, Jason L.
• Primary Examiner(s): Stinson, Chelsea E
• Assistant Examiner(s): Song, Himchan
• Application Number:
  US15/634,035
• Publication Number:
  US 20180368840A1
• Time in Patent Office: 1,176 Days
• Field of Search: 606151, 606153, 2271751-1821
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/0046 with a releasable handle; with handle and operating part separable for prosthetic joint-implanting tools A61F2/4603
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• CPC Class Codes: A61B 2017/00845 of moving parts with respect to each other
• 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 2017/07257 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 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft

Abstract

A surgical stapling anvil for use with a surgical instrument is disclosed. The anvil comprises an anvil body comprising a tissue-facing surface and a longitudinal cavity. The longitudinal cavity comprises a first cavity portion configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough, a second cavity portion configured to receive an anvil-engaging portion of the firing member therethrough, and a third cavity portion comprising a first angular surface which flares outward relative to the second cavity portion. The anvil further comprises an anvil cap comprising a first section positioned within a portion of the second cavity portion and a second section positioned within the third cavity portion, wherein the second section comprises a second angular surface corresponding to the first angular surface, and wherein the first angular surface and the second angular surface are welded together.

Claims

1. A surgical stapling anvil for use with a surgical instrument, wherein said surgical stapling anvil comprises:

an anvil body, comprising;

a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; and

a longitudinal cavity defined therein, wherein said longitudinal cavity comprises;

a first cavity portion comprising a first width, wherein said first cavity portion is configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough;

a second cavity portion comprising a second width which is greater than said first width, wherein said second cavity portion comprises a first surface comprising first angle, and wherein said second cavity portion is configured to receive an anvil-engaging portion of the firing member therethrough; and

a third cavity portion comprising a third width which is greater than said second width, wherein said third cavity portion further comprises a first angular surface comprising a second angle, wherein said second angle flares outward relative to said first angle, and wherein said first angle and said second angle are unique angles;

an anvil cap, comprising;

a first section positioned within a portion of said second cavity portion; and

a second section positioned within said third cavity portion, wherein said second section comprises a second angular surface corresponding to said first angular surface, and wherein a mated portion of said first angular surface and said second angular surface define a mated depth; and

a weld welding said first angular surface and said second angular surface together, wherein said weld comprises a weld depth.

2. The surgical stapling anvil of claim 1, wherein said anvil cap comprises a Y-shaped cross section.

3. The surgical stapling anvil of claim 1, wherein said weld depth is between 0.015 inches and 0.040 inches.

4. The surgical stapling anvil of claim 3, wherein said weld depth is 0.030 inches.

5. The surgical stapling anvil of claim 1, wherein said weld comprises a laser weld.

6. The surgical stapling anvil of claim 1, wherein said weld depth is less than said mated depth.

7. The surgical stapling anvil of claim 1, wherein said weld depth is greater than said mated depth.

8. A surgical stapling anvil for use with a surgical instrument, wherein said surgical stapling anvil comprises:

an anvil body, comprising;

a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; and

a longitudinal cavity defined therein, wherein said longitudinal cavity comprises;

a first cavity portion comprising a first width, wherein said first cavity portion is configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough;

a second cavity portion comprising a second width which is greater than said first width, wherein said second cavity portion is configured to receive an anvil-engaging portion of the firing member therethrough; and

a third cavity portion comprising a third width which is greater than said second width, wherein said third cavity portion further comprises a first angular surface which flares outward relative to said second cavity portion;

an anvil cap, comprising;

a first section positioned within a portion of said second cavity portion; and

a second section positioned within said third cavity portion, wherein said second section comprises a second angular surface corresponding to said first angular surface, and wherein a mated portion of said first angular surface and said second angular surface define a mated depth; and

a weld welding said first angular surface and said second angular surface together, wherein said weld comprises a weld depth, wherein said third cavity portion comprises a first ledge surface, wherein said second section comprises a second ledge surface corresponding to said first ledge surface, and wherein said first ledge surface and said second ledge surface are at least substantially parallel to said tissue-facing surface.

9. The surgical stapling anvil of claim 8, wherein said weld extends into said first and second ledge surfaces.

10. A surgical stapling anvil for use with a surgical instrument, wherein said surgical stapling anvil comprises:

a first anvil member, comprising;

a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; and

a longitudinal cavity, comprising;

a first cavity portion comprising a first width, wherein said first cavity portion is configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough;

a second cavity portion comprising a second width which is greater than said first width, wherein said second cavity portion is configured to receive an anvil-engaging portion of the firing member therethrough; and

a third cavity portion comprising a third width which is greater than said second width;

a second anvil member, comprising;

a first section positioned within said second cavity portion, wherein said first section comprises a first surface comprising a first angle;

a second section positioned within said third cavity portion, wherein said second section comprises a fourth width which is greater than said second width, and wherein said second section comprises a second surface comprising a second angle; and

a transition surface, wherein said first surface and said second surface transition at said transition surface between said first angle and said second angle, wherein said first angle and said second angle are unique angles; and

a weld connecting said second section and said first anvil member together, wherein said weld extends at least to said transition surface.

11. The surgical stapling anvil of claim 10, wherein said second section flares outwardly relative to said first section.

12. The surgical stapling anvil of claim 10, wherein said second anvil member comprises a Y-shaped cross section.

13. The surgical stapling anvil of claim 10, wherein said weld comprises a weld depth of between 0.015 inches and 0.040 inches.

14. The surgical stapling anvil of claim 10, wherein said weld comprises a laser weld.

15. A surgical stapling anvil for use with a surgical instrument, wherein said surgical stapling anvil comprises:

a first anvil member, comprising;

a tissue-facing surface comprising a plurality of staple-forming pockets defined therein; and

a longitudinal cavity, comprising;

a first cavity portion comprising a first width, wherein said first cavity portion is configured to receive at least a portion of a cutting edge of a firing member of the surgical instrument therethrough;

a second cavity portion comprising a second width which is greater than said first width, wherein said second cavity portion is configured to receive an anvil-engaging portion of the firing member therethrough; and

a third cavity portion comprising a third width which is greater than said second width;

a second anvil member, comprising;

a first section positioned within said second cavity portion;

a second section positioned within said third cavity portion, wherein said second section comprises a fourth width which is greater than said second width; and

a transition surface, wherein said first section and said second section transition at said transition surface; and

a weld connecting said second section and said first anvil member together, wherein said weld extends at least to said transition surface, and wherein said transition surface comprises a ledge surface at least substantially parallel to said tissue-facing surface.

16. The surgical stapling anvil of claim 15, wherein said weld extends into said ledge surface.