Negative pressure wound closure device

• US 10,130,520 B2
• Filed: 07/16/2013
• Issued: 11/20/2018
• Est. Priority Date: 07/16/2012
• Status: Expired due to Fees

• 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, Hammond, Victoria Jody, Hartwell, Edward Yerbury, Hicks, John Kenneth, Huddleston, Elizabeth Mary, Kelly, Andrew, Linton, Andrew, Richardson, Mark, Saxby, Carl, Stern, Tim
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): Treyger, Ilya
• Application Number:
  US14/415,470
• Publication Number:
  US 20150190288A1
• Time in Patent Office: 1,953 Days
• 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 2013/00178 hand-held CO2 cylinder, e.g. sparklet
• CPC Class Codes: A61F 2013/00536 for draining or irrigating wounds
• CPC Class Codes: A61M 1/90 Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
• CPC Class Codes: A61M 1/913 having a bridging element for transferring the reduced pressure from the connector to the dressing
• CPC Class Codes: A61M 1/915 Constructional details of the pressure distribution manifold
• CPC Class Codes: A61M 1/916 specially adapted for deep wounds

Abstract

The present invention relates to a negative pressure wound closure system and methods for using such a system. Preferred embodiments of the invention facilitate closure of the wound by preferentially contracting to provide for movement of the tissue. Preferred embodiments can utilize tissue grasping elements to apply a wound closing force to the tissue.

Claims

1. A stabilizing structure for insertion into a wound,

comprising:

a plurality of elongate strips;

a plurality of intervening members connecting the elongate strips, wherein the plurality of intervening members are configured to pivot relative to the strips to allow the plurality of elongate strips to collapse relative to one another;

wherein the intervening members between a first strip and a second strip are configured to pivot independently of the intervening members between a second strip and a third strip;

wherein the plurality of elongate strips and the plurality of intervening members connecting the elongate strips form a plurality of cells defined by one or more walls; and

wherein a top foam layer is provided above the stabilizing structure, the top foam layer comprising fingers that extend into the stabilizing structure.

2. The stabilizing structure of claim 1, wherein the intervening members are connected to the elongate strips via at least one joint.

3. The stabilizing structure of claim 2, wherein the joint is a hinge.

4. The stabilizing structure of claim 3, wherein the hinges are configured to collapse in one direction.

5. The stabilizing structure of claim 2, wherein the joints are configured to restrict the movement of the intervening members.

6. The stabilizing structure of claim 1, wherein the elongate strips are rigid.

7. The stabilizing structure of claim 1, wherein the elongate strips are configured to bend along their length.

8. The stabilizing structure of claim 1, wherein the elongate strips are constructed from a material selected from the group consisting of silicone, polyurethane, rigid plastics, semi-rigid plastics, biocompatible materials, flexible plastic materials, composite materials, and foam.

9. The stabilizing structure of claim 1, wherein the intervening members are constructed from a material selected from the group consisting of silicone, polyurethane, rigid plastics, semi-rigid plastics, biocompatible materials, flexible plastic materials, composite materials, and foam.

10. The stabilizing structure of claim 1, comprising a plurality of intervening members between adjacent elongate strips to define a row of cells between each pair of adjacent elongate strips.

11. The stabilizing structure of claim 1, wherein the cells are in the shape of a diamond.

12. The stabilizing structure of claim 10, wherein the cells in a row between adjacent elongate strips are configured to collapse together as the adjacent strips collapse relative to one another.

13. The stabilizing structure of claim 10, comprising one or more rows of cells between adjacent strips configured to collapse in a first direction, and one or more rows of cells between adjacent strips configured to collapse in a second direction opposite the first direction.

14. The stabilizing structure of claim 10, wherein all of the rows of cells of the stabilizing structure are configured to collapse in the same direction.

15. The stabilizing structure of claim 10, wherein intervening members between the first strip and the second strip are offset relative to intervening members between the second strip and the third strip.

16. The stabilizing structure of claim 1, further comprising foam surrounding the elongate strips and the intervening members.

17. The stabilizing structure of claim 1, further comprising foam between adjacent elongate strips.

18. The stabilizing structure of claim 1, wherein the stabilizing structure is configured such that 90% of the total collapse of any dimension occurs within one hour.

19. The stabilizing structure of claim 1, wherein the stabilizing structure is configured such that 90% of the total collapse of any dimension occurs within five minutes.

20. The stabilizing structure of claim 1, wherein a bottom foam layer is provided below the stabilizing structure.

21. The stabilizing structure of claim 20, wherein the bottom foam layer comprises fingers that extend into the stabilizing structure.

22. The stabilizing structure of claim 1, wherein a foam ribbon or ring is provided around the stabilizing structure.

23. The stabilizing structure of claim 1, wherein the plurality of elongate strips are arranged generally in parallel.

24. The stabilizing structure of claim 1, wherein the stabilizing structure is in the shape of an oval.