Compressible non-fibrous adjuncts

Patent metadata

Field	Value
Publication number	US-11534168-B2
Application number	US-202017009743-A
Country	US
Kind code	B2
Filing date	Sep 1, 2020
Priority date	Sep 16, 2019
Publication date	Dec 27, 2022
Grant date	Dec 27, 2022

Abstract

Stapling assemblies for use with a surgical stapler are provided. In one exemplary embodiment, the stapling assembly includes a cartridge having a plurality of staples disposed therein and a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on the cartridge. Adjunct systems for use with a surgical stapler are also provided. Surgical end effectors using the stapling assemblies are also provided. Methods for manufacturing stapling assemblies and using the same are also provided.

First claim

What is claimed is:

1. A stapling assembly for use with a surgical stapler, comprising:
a cartridge having a plurality of staples disposed therein, the plurality of staples being configured to be deployed into tissue; and
a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct comprising,
a first lattice structure having a first compression ratio, the first lattice structure extending from a top surface to a bottom surface that opposes the top surface, and
a first outer layer positioned on the top surface of the first lattice structure and configured to be positioned against tissue, the first outer layer having a second compression ratio that is different than the first compression ratio such that the adjunct, while under an applied stress in a range of 30 kPa to 90 kPa, undergoes a strain in a range of 0.1 to 0.9, wherein the first outer layer includes a plurality of openings that allow a portion of the tissue to penetrate at least into the first outer layer when the adjunct is attached to tissue by the plurality of staples to thereby promote tissue ingrowth within the adjunct.

2. The stapling assembly of claim 1 , wherein the strain is in the range of 0.1 to 0.7.

3. The stapling assembly of claim 1 , wherein the first compression ratio is greater than the second compression ratio.

4. The stapling assembly of claim 1 , wherein the first lattice structure includes a plurality of repeating unit cells, and wherein the plurality of repeating unit cells comprises a triply periodic minimal surface structure.

5. The stapling assembly of claim 1 , wherein the first lattice structure includes a plurality of repeating unit cells, and wherein each unit cell is defined by a plurality of planar interconnected struts.

6. The stapling assembly of claim 1 , wherein the first lattice structure includes a plurality of unit cells, and wherein at least two unit cells of the plurality of unit cells are different.

7. The stapling assembly of claim 1 , wherein the first outer layer is a second lattice structure or a film.

8. The stapling assembly of claim 7 , wherein the first lattice structure includes a first plurality of repeating geometric units, and wherein the second lattice structure includes a second plurality of repeating geometric units that are different than the first plurality of repeating geometric units.

9. The stapling assembly of claim 7 , wherein the first lattice structure includes a first pattern of interconnected geometric units and the second lattice structure includes a second pattern of interconnected geometric units, and wherein the first and second patterns are different.

10. The stapling assembly of claim 1 , further comprising a second outer layer positioned on the bottom surface of the first lattice structure and configured to be positioned against the cartridge, wherein the second outer layer has a third compression ratio that is different than at least the first compression ratio.

11. The stapling assembly of claim 10 , wherein the second outer layer is a second lattice structure or a film.

12. The stapling assembly of claim 11 , wherein the second lattice structure includes a plurality of attachment features that are configured to interact with the cartridge to thereby substantially prevent slideable movement of the adjunct relative to the cartridge.

13. The stapling assembly of claim 11 , wherein the film is a pressure-sensitive adhesive.

14. The stapling assembly of claim 1 , wherein the adjunct has an undeformed state in which a maximum height of the adjunct in the undeformed state is greater than a maximum height of the plurality of staples in a formed configuration.

15. A stapling assembly for use with a surgical stapler, comprising:
a cartridge having a plurality of staples disposed therein, the plurality of staples being configured to be deployed into tissue; and
a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct comprising,
a first lattice structure having a first compression ratio, the first lattice structure extending from a top surface to a bottom surface that opposes the top surface, and
a first outer layer positioned on the bottom surface of the first lattice structure and configured to be positioned against the cartridge, the first outer layer having a second compression ratio that is different than the first compression ratio such that the adjunct, while under an applied stress in a range of 30 kPa to 90 kPa, undergoes a strain in a range of 0.1 to 0.9, wherein the first outer layer includes a plurality of surface features that are configured to interact with the cartridge to thereby substantially prevent slideable movement of the adjunct relative to the cartridge when the adjunct is releasably retained thereto.

16. The stapling assembly of claim 15 , wherein the strain is in the range of 0.1 to 0.7.

17. The stapling assembly of claim 15 , wherein the first compression ratio is greater than the second compression ratio.

18. The stapling assembly of claim 15 , wherein the first lattice structure includes a plurality of repeating unit cells, and wherein the plurality of repeating unit cells comprises a triply periodic minimal surface structure.

19. The stapling assembly of claim 15 , wherein the first lattice structure includes a plurality of repeating unit cells, and wherein each unit cell is defined by a plurality of planar interconnected struts.

20. The stapling assembly of claim 15 , wherein the first lattice structure includes a plurality of unit cells, and wherein at least two unit cells of the plurality of unit cells are different.

21. The stapling assembly of claim 15 , wherein the first outer layer is a second lattice structure or a film.

22. The stapling assembly of claim 21 , wherein the first lattice structure includes a first plurality of repeating geometric units, and wherein the second lattice structure includes a second plurality of repeating geometric units that are different than the first plurality of repeating geometric units.

23. The stapling assembly of claim 21 , wherein the first lattice structure includes a first pattern of interconnected geometric units and the second lattice structure includes a second pattern of interconnected geometric units, and wherein the first and second patterns are different.

24. The stapling assembly of claim 15 , wherein the adjunct has an undeformed state in which a maximum height of the adjunct in the undeformed state is greater than a maximum height of the plurality of staples in a formed configuration.

25. A stapling assembly for use with a surgical stapler, comprising:
a cartridge having a plurality of staples disposed therein and a slot that extends into and along at least a portion of a longitudinal axis of the cartridge, the slot being defined by at least two opposing walls and configured to receive a cutting element; and
a non-fibrous adjunct formed of at least one fused bioabsorbable polymer and configured to be releasably retained on the cartridge such that the adjunct can be attached to tissue by the plurality of staples in the cartridge, the adjunct comprising,
a tissue-

Assignees

• Ethicon Llc
• Cilag Gmbh Int

Inventors

• Harris Jason L
• Vendely Michael J
• Shelton Iv Frederick E
• Bridges Austin
• Kabaria Hardik
• Javid Farhad
• Kelly David Arthur
• Baker Elliott
• Peter Stephen J

Classifications

• A61B17/072

  for applying a row of staples in a single action, e.g. the staples being applied simultaneously · CPC title

• A61B17/07292 Primary

  Reinforcements for staple line, e.g. pledgets · CPC title

• A61B2017/07271

  characterised by its cartridge · CPC title

• A61B17/0644 Primary

  penetrating the tissue, deformable to closed position · CPC title

• A61B2017/07228

  Arrangement of the staples · CPC title