Vacuum closure device

Patent metadata

Field	Value
Publication number	US-12128171-B2
Application number	US-202217740748-A
Country	US
Kind code	B2
Filing date	May 10, 2022
Priority date	Mar 13, 2008
Publication date	Oct 29, 2024
Grant date	Oct 29, 2024

Abstract

This invention relates to the design of tissue covering elements for use in vacuum assisted tissue apposition systems, wherein the geometry of the covering elements favours the application of contractile forces over compressive or extensive forces at the tissue interface.

First claim

What is claimed is:

1. An apparatus for closing a wound, the apparatus comprising:
a tissue stabilizer configured for placement over a wound comprising wound margins, the tissue stabilizer configured to exert a contractile force to the wound margins when under negative pressure, thereby drawing the wound margins toward a center of the wound; and
wherein the tissue stabilizer is configured to contract more in a direction parallel to a skin surface adjacent the wound than in a direction perpendicular to the skin surface, the tissue stabilizer configured to contract anisotropically parallel to the skin surface.

2. The apparatus of claim 1 , wherein the tissue stabilizer is configured for placement above the skin surface adjacent the wound.

3. The apparatus of claim 1 , wherein the tissue stabilizer is configured to form a vacuum seal at the wound.

4. The apparatus of claim 1 , further comprising a vacuum connection aperture.

5. The apparatus of claim 4 , wherein the vacuum connection aperture is configured to connect to a source of negative pressure.

6. The apparatus of claim 5 , wherein the vacuum connection aperture is configured to connect to a conduit, the conduit configured to deliver negative pressure.

7. The apparatus of claim 6 , further comprising a source of negative pressure.

8. The apparatus of claim 1 , wherein the tissue stabilizer is configured to exert a net contractile force on the wound in the direction parallel to a skin surface.

9. The apparatus of claim 1 , wherein the tissue stabilizer comprises a plurality of flat, internal surfaces.

10. The apparatus of claim 1 , wherein the tissue stabilizer is transparent.

11. A system for closing a wound, the system comprising:
a tissue stabilizer configured for placement over a wound comprising wound margins, the tissue stabilizer configured to exert a contractile force to the wound margins when under negative pressure, thereby drawing the wound margins toward a center of the wound, wherein the tissue stabilizer is configured to contract more in a direction parallel to a skin surface adjacent the wound than in a direction perpendicular to the skin surface, the tissue stabilizer configured to contract anisotropically parallel to the skin surface; and
a vacuum connection aperture configured to connect to a source of negative pressure.

12. The system of claim 11 , further comprising a source of negative pressure.

13. The system of claim 11 , wherein the tissue stabilizer is configured for placement above the skin surface adjacent the wound.

14. The system of claim 11 , wherein the tissue stabilizer is configured to form a vacuum seal at the wound site.

15. The system of claim 11 , wherein the aperture is configured to connect to a conduit, the conduit configured to deliver negative pressure.

16. The system of claim 15 , further comprising a source of negative pressure.

17. The system of claim 11 , wherein the tissue stabilizer is configured to exert a net contractile force on the wound in the direction parallel to the skin surface.

18. The system of claim 11 , wherein the tissue stabilizer comprises a plurality of flat, internal surfaces.

19. The system of claim 11 , wherein the tissue stabilizer is transparent.

Assignees

• Smith & Nephew

Inventors

• Greener Bryan

Classifications

• A61F13/05

  specially adapted for use with sub-pressure or over-pressure therapy, wound drainage or wound irrigation, e.g. for use with negative-pressure wound therapy [NPWT] · CPC title

• A61M1/913

  having a bridging element for transferring the reduced pressure from the connector to the dressing · CPC title

• A61M1/78

  Means for preventing overflow or contamination of the pumping systems (combined with drainage containers A61M1/60) · CPC title

• A61M1/604

  Bag or liner in a rigid container, with suction applied to both · CPC title

• A61M1/60

  Containers for suction drainage, adapted to be used with an external suction source (containers not adapted for subjection to vacuum A61M1/69) · CPC title