Negative pressure wound closure device and systems and methods of use in treating wounds with negative pressure

• US 10,124,098 B2
• Filed: 03/12/2014
• Issued: 11/13/2018
• Est. Priority Date: 03/13/2013
• Status: Active Grant

• Current Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC), University Of Massachusetts
• Original Assignee: Smith & Nephew Incorporated (Smith & Nephew PLC), University Of Massachusetts
• Inventors: Dunn, Raymond M., Hartwell, Edward Yerbury, Hicks, John Kenneth, Huddleston, Elizabeth Mary, Saxby, Carl
• Primary Examiner(s): Wiest, Philip R
• Application Number:
  US14/774,689
• Publication Number:
  US 20160022885A1
• Time in Patent Office: 1,707 Days
• Field of Search: 604319
• CPC Class Codes: A61F 13/01029 made of multiple layers
• CPC Class Codes: A61F 13/022 having more than one layer with different fluid retention characteristics
• CPC Class Codes: A61F 13/05 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 Class Codes: A61F 2013/00553 with detachable parts
• CPC Class Codes: A61F 2013/00842 for tearing off dressing of desired size
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds
• CPC Class Codes: A61M 2210/04 Skin
• CPC Class Codes: A61M 2210/1021 Abdominal cavity

Abstract

Certain embodiments described herein are directed to an elongated layer of material and a lip to be placed in contact with a wound and the elongated layer of material to be wrapped around a wound filler, their methods of use and systems incorporating the same, wherein the wound filler lip is configured to be positioned beneath the fascia. Additionally, some embodiments described herein are directed to the closure of the wound and the use of attachment mechanisms on the elongate layer and lip to attach to the wound surface.

Claims

1. An apparatus for wound treatment, comprising:

an elongate layer of material configured to be placed in contact with a wound, the elongate layer capable of being formed into an annular shape; and

a lip integral with the elongate layer and extending outwardly from the elongate layer when the elongate layer is arranged in an annular shape;

wherein the lip is configured to be positioned beneath the fascia of a patient; and

wherein a portion of the elongate layer extends above a plane on a top surface of the lip when the elongate layer is formed into the annular shape.

2. The apparatus of claim 1, wherein the elongate layer is made of foam.

3. The apparatus of claim 1, wherein the lip is made of foam.

4. The apparatus of claim 1, wherein the elongate layer has an inner surface and an outer surface and a thickness therebetween, wherein the thickness of the layer is less than a height of the inner and outer surfaces.

5. The apparatus of claim 1, further comprising a wound filler, wherein the elongate layer surrounds the wound filler.

6. The apparatus of claim 5, wherein the wound filler comprises a material configured to compress horizontally as negative pressure is applied and cause wound edges to draw closer together and configured to be relatively rigid to prevent vertical collapse of a wound cover.

7. The apparatus of claim 5, wherein the wound filler comprises foam.

8. The apparatus of any one of claim 5, further comprising an organ protection layer configured to be positioned over a wound beneath the wound filler.

9. The apparatus of any one of claim 5, further comprising one or more foam layers configured to be positioned above and/or below the wound filler.

10. The apparatus of claim 1, further comprising a wound cover configured to be placed over a wound.

11. The apparatus of claim 10, further comprising a connection for connecting the wound cover to a source of negative pressure.

12. The apparatus of claim 10, further comprising a negative pressure source configured to be connected to the wound cover to provide negative pressure to a wound.

13. The apparatus of claim 1, wherein an inner surface of the elongate layer is configured to be attached to a wound filler.

14. The apparatus of claim 13, wherein the inner surface has means for attaching the inner surface of the elongate layer to the wound filler.

15. The apparatus of claim 14, wherein the means for attaching the inner surface of the elongate layer to the wound filler comprises an attachment mechanism selected from the group consisting of a barb, an adhesive, a hook-and-loop fastener, hooks of a hook-and-loop fastener, mushroom shaped hooks of a hook-and-loop fastener, and any combination thereof.

16. The apparatus of claim 1, wherein an outer surface of the elongate layer is configured to be attached to a wound surface.

17. The apparatus of claim 16, wherein the outer surface has means for attaching the outer surface of the elongate layer to the wound surface.

18. The apparatus of claim 17, wherein the means for attaching the outer surface of the elongate layer to the wound surface is selected from the group consisting of a barb, an adhesive, tissue grabbers, glue, suturing, mesh, and any combination thereof.

19. The apparatus of claim 1, wherein the lip has means for attaching the lip to the fascia.

20. The apparatus of claim 19, wherein the means for attaching the lip to the fascia comprise an attachment mechanism selected from the group consisting of a barb, an adhesive, tissue grabbers, glue, suturing, mesh, and any combination thereof.

21. The apparatus of claim 19, wherein an outer surface of the elongate layer has means for attaching the outer surface of the elongate layer to the wound surface that is different from the means for attaching the lip to the fascia.

22. The apparatus of claim 1, further comprising a plurality of fingers extending outwardly from the lip.

23. The apparatus of claim 22, wherein the fingers are covered by a slitted organ protection layer.

24. The apparatus of claim 22, wherein the fingers comprise a foam material different from the material of the elongate layer.

25. The apparatus of claim 24, wherein the foam material for the fingers comprises foam having a porosity between 200 ppi and 60 ppi.

26. The apparatus of claim 1, wherein the elongate layer and the lip form a generally L-shaped cross-section.

27. The apparatus of claim 1, wherein the elongate layer has a first end and a second end and means for attaching the first and second ends together.

28. A method of treating a wound using the apparatus of claim 1 comprising applying negative pressure to the wound through a wound cover positioned over the wound and a wound filler positioned within the wound, wherein the wound filler is surrounded by the elongate layer of material and the lip is positioned beneath the fascia.

29. The method of claim 28, wherein the wound is an abdominal wound.

30. The method of claim 28, further comprising positioning an organ protection layer over the wound and then positioning the wound filler within the wound.