Vacuum assisted wound dressing

Patent metadata

Field	Value
Publication number	US-11974902-B2
Application number	US-202318204591-A
Country	US
Kind code	B2
Filing date	Jun 1, 2023
Priority date	Nov 21, 2007
Publication date	May 7, 2024
Grant date	May 7, 2024

Abstract

Apparatus for the application of topical negative pressure therapy to a wound site is described, the apparatus comprising: a wound contacting element for retaining wound exudate fluid therein; a wound covering element that provides a substantially airtight seal over the wound contacting element and wound site; a vacuum connection tube connecting a wound cavity to a vacuum source; and a vacuum source connected to a distal end of the vacuum connection tube.

First claim

What is claimed is:

1. An apparatus for the application of topical negative pressure therapy, the apparatus comprising:
a wound covering element configured to be positioned over a wound, the wound covering element comprising an aperture;
a cup-shaped port seated onto a surface of the wound covering element over the aperture; and
a self-coalescing liquid-retaining layer positioned under the wound covering element, the liquid-retaining layer configured to retain wound exudate therein upon application of negative pressure.

2. The apparatus of claim 1 , wherein the liquid-retaining layer is configured to inhibit wound exudate from being aspirated through the aperture.

3. The apparatus of claim 1 , further comprising a vacuum connection conduit configured to be connected to the wound covering element.

4. The apparatus of claim 1 , wherein the wound covering element further comprises an adhesive configured for adhering to a portion of skin surrounding the wound.

5. The apparatus of claim 1 , wherein the liquid-retaining layer is configured to be positioned at the aperture.

6. The apparatus of claim 1 , wherein the liquid-retaining layer comprises self-coalescing fibers.

7. The apparatus of claim 1 , wherein the wound covering element and the liquid-retaining layer are combined into a single element.

8. The apparatus of claim 1 , wherein the liquid retaining layer comprises superabsorbent particles.

9. The apparatus of claim 1 , wherein the liquid-retaining layer comprises wicking fibers.

10. The apparatus of claim 1 , wherein the cup-shaped portion comprises a flange.

11. The apparatus of claim 1 , wherein at least a portion of the liquid-retaining layer is configured to transform into a gel upon contact with wound exudate.

12. A method for the application of topical negative pressure therapy, the method comprising:
applying a wound covering element over a wound, the wound covering element comprising an aperture positioned under a cup-shaped port; and
delivering negative pressure to the wound from a source of negative pressure;
wherein a self-coalescing liquid-retaining layer is positioned in a flow-path between the wound covering element and the source of negative pressure, the liquid-retaining layer configured to retain wound exudate therein upon application of negative pressure.

13. The apparatus of claim 12 , further comprising inhibiting wound exudate from being aspirated through the aperture.

14. The apparatus of claim 12 , further comprising connecting a vacuum connection conduit configured to the wound covering element.

15. The apparatus of claim 12 , wherein the wound covering element further comprises an adhesive configured for adhering to a portion of skin surrounding the wound.

16. The apparatus of claim 12 , wherein the liquid-retaining layer comprises self-coalescing fibers.

17. The apparatus of claim 12 , wherein the liquid retaining layer comprises superabsorbent particles.

18. The apparatus of claim 12 , wherein the wound covering element and the liquid-retaining layer are combined into a single element.

19. The apparatus of claim 12 , wherein the wound covering element further comprises an adhesive to adhere the wound covering element to a portion of skin surrounding the wound.

20. The apparatus of claim 12 , wherein the liquid-retaining layer comprises wicking fibers.

Assignees

• Smith & Nephew

Inventors

• Greener Bryan

Classifications

• A61F13/0206 Primary

  with absorbent fibrous layers, e.g. woven or non-woven absorbent pads or island dressings · CPC title

• A61F13/00068

  Human Necessities · mapped topic

• A61F13/0209

  comprising superabsorbent material · CPC title

• A61F13/0216

  Human Necessities · mapped topic

• A61F13/0226

  characterised by the support layer · CPC title