Staple forming pocket arrangements

• US 10,499,914 B2
• Filed: 12/21/2016
• Issued: 12/10/2019
• Est. Priority Date: 12/21/2016
• Status: Active Grant

• Current Assignee: Cilag Gmbh International (Johnson & Johnson)
• Original Assignee: Ethicon, LLC (Johnson & Johnson)
• Inventors: Huang, Zhifan F., Shelton, IV, Frederick E., Harris, Jason L., Bakos, Gregory J., Hueil, Geoffrey C.
• Primary Examiner(s): Long, Robert F
• Application Number:
  US15/385,920
• Publication Number:
  US 20180168620A1
• Time in Patent Office: 1,084 Days
• Field of Search: 2271751-1821, 606139, 606142, 606143
• 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 17/115 Staplers for performing anastomosis in a single operation
• 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 2017/07228 Arrangement of the staples
• 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 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2902 characterized by features of the actuating rod
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2933 camming or guiding means
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots
• CPC Class Codes: A61B 34/30 : Surgical robots

Abstract

In various embodiments, a stapling assembly is disclosed. The stapling assembly comprises, among other things, an anvil configured to deform staples. The anvil comprises a tissue-engaging surface and a pair of forming pockets defined in the tissue engaging surface, wherein the pair of forming pockets is configured to deform the legs of a staple. The forming pockets comprise, one, a proximal forming pocket comprising a forming surface, wherein the forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein the first radius of curvature and the second radius of curvature comprise a ratio of 1.5:1 to 3:1, and wherein the first radius of curvature is between 8 times and 10 times larger the staple diameter and, two, a distal forming pocket.

Claims

1. A stapling assembly, comprising:

a first jaw;

a second jaw movable relative to said first jaw;

a staple cartridge comprising a plurality of staples, wherein each said staple is comprised of a wire defined by a staple diameter, and wherein each said staple comprises staple legs; and

an anvil configured to deform said staples, said anvil comprising;

a planar surface; and

a pair of forming pockets defined in said planar surface, wherein said pair of forming pockets is configured to deform the staple legs of a said staple, and wherein said pair of forming pockets comprises;

a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;

1 to 3;

1, and wherein said first radius of curvature is between 8 times and 10 times larger than said staple diameter; and

a distal forming pocket.

2. The stapling assembly of claim 1, wherein said ratio is about 2:

1.

3. The stapling assembly of claim 1, wherein said first radius of curvature is about 9 times larger than said staple diameter.

4. The stapling assembly of claim 1, wherein said second radius of curvature is between 4 times and 6 times larger than said staple diameter.

5. The stapling assembly of claim 4, wherein said second radius of curvature is about 4.5 times larger than said staple diameter.

6. The stapling assembly of claim 1, wherein said pair of forming pockets define a ridge therebetween, wherein said ridge comprises a ridge width, and wherein said ridge width is less than said staple diameter.

7. The stapling assembly of claim 1, wherein said staple diameter is between 0.0079 inches and 0.0094 inches.

8. A stapling assembly, comprising:

a first jaw;

a second jaw movable relative to said first jaw;

a staple cartridge comprising a plurality of staples, wherein each said staple comprises a pair of staple legs extending from a staple base, and wherein said staple base comprises a staple base length; and

an anvil configured to deform said staples, said anvil comprising;

a tissue-engaging surface; and

a pair of forming pockets defined in said tissue-engaging surface, wherein said pair of forming pockets is configured to deform the legs of a said staple, and wherein said pair of forming pockets comprises;

a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;

1 to 3;

1, and wherein said first radius of curvature is greater than about 0.6 times said staple base length; and

a distal forming pocket.

9. The stapling assembly of claim 8, wherein said ratio is about 2:

1.

10. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, and wherein said first radius of curvature is between 8 times and 10 times larger than said staple diameter.

11. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, and wherein said first radius of curvature is about 9 times larger than said staple diameter.

12. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, and wherein said second radius of curvature is between 4 times and 6 times larger said staple diameter.

13. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, and wherein said second radius of curvature is about 4.5 times larger than said staple diameter.

14. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, wherein said pair of forming pockets define a ridge there between, wherein said ridge comprises a ridge width, and wherein said ridge width is less than 1 times said staple diameter.

15. The stapling assembly of claim 8, wherein each said staple comprises a staple diameter, and wherein said staple diameter is between 0.0079 inches and 0.0094 inches.

16. A stapling assembly, comprising:

a first jaw;

a second jaw movable relative to said first jaw;

a fastener cartridge comprising a plurality of fasteners, wherein each said fastener is comprised of a wire having a wire diameter, and wherein each said fastener comprises fastener legs; and

an anvil configured to deform said fasteners, said anvil comprising;

a tissue-engaging surface; and

first and second fastener forming features defined in said tissue-engaging surface, wherein said first and second fastener forming features are configured to deform the legs of a said fastener, and wherein said first and second fastener forming features comprises;

a first forming feature comprising a forming surface, wherein said forming surface comprises an entry region comprising a first radius of curvature and an exit region comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.2;

1 to 3.3;

1, and wherein said first radius of curvature is between about 7 times and about 11 times larger than said wire diameter; and

a second forming feature.

17. The stapling assembly of claim 16, wherein said ratio is about 2:

1.

18. The stapling assembly of claim 16, wherein said first radius of curvature is about 9 times larger said wire diameter.

19. The stapling assembly of claim 16, wherein said second radius of curvature is between about 4 times and about 6 times larger than said wire diameter.

20. The stapling assembly of claim 19, wherein said second radius of curvature is 4.5 times larger said wire diameter.

21. The stapling assembly of claim 16, wherein said first and second fastener forming features define a central portion therebetween, wherein said central portion comprises a width, and wherein said width is less than said wire diameter.

22. The stapling assembly of claim 16, wherein said wire diameter is between 0.0075 inches and 0.0098 inches.

23. A fastening assembly, comprising:

a first jaw;

a second jaw movable relative to said first jaw;

a fastener cartridge comprising a plurality of fasteners, wherein each said fastener comprises a fastener diameter, and wherein each said fastener comprises fastener legs; and

an anvil configured to deform said fasteners, wherein said anvil comprises a pair of forming pockets defined in said anvil, wherein said pair of forming pockets is configured to deform said fastener legs of a said fastener, and wherein said pair of forming pockets comprises;

a first forming pocket comprising a forming surface, wherein said forming surface comprises an entry zone comprising a first radius of curvature and an exit zone comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;

1 to 3;

1, and wherein said first radius of curvature is between 8 times and 10 times larger than said fastener diameter; and

a second forming pocket.

24. A stapling assembly, comprising:

a first jaw;

a second jaw movable relative to said first jaw;

a staple cartridge comprising a plurality of staples, wherein each said staple comprises a pair of staple legs extending from a staple base, and wherein said staple base comprises a staple base length; and

a staple-forming surface configured to deform said staples, wherein said staple-forming surface comprises;

a tissue-engaging surface; and

forming pockets defined in said tissue-engaging surface, wherein said forming pockets are configured to deform said staple legs of a said staple, and wherein said forming pockets comprise;

a proximal forming pocket comprising a forming surface, wherein said forming surface comprises an entry surface comprising a first radius of curvature and an exit surface comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.5;

1 to 3;

1, and wherein said first radius of curvature is greater than about 0.6 times said staple base length; and

a distal forming pocket.

25. An anvil for use with a stapling instrument, wherein said anvil is configured to deform a fastener of the stapling instrument, wherein the fastener comprises a fastener diameter and fastener legs, and wherein said anvil comprises:

a tissue-engaging surface; and

forming pockets defined in said tissue-engaging surface, wherein said forming pockets are configured to deform the legs of the fastener, and wherein said forming pockets comprise;

a first forming feature comprising a forming surface, wherein said forming surface comprises an entry region comprising a first radius of curvature and an exit region comprising a second radius of curvature, wherein said first radius of curvature and said second radius of curvature comprise a ratio of 1.2;

1 to 3.3;

1, and wherein said first radius of curvature is between about 7 times and about 11 times larger than the fastener diameter; and

a second forming feature.