Tissue interface for tissue debridement

Patent metadata

Field	Value
Publication number	US-2023263666-A1
Application number	US-202118015260-A
Country	US
Kind code	A1
Filing date	Jun 14, 2021
Priority date	Jul 9, 2020
Publication date	Aug 24, 2023
Grant date	—

Abstract

Dressings, systems and methods of treating a tissue site are described. A method of manufacturing the dressing can include providing a dressing material. The dressing material can have a surface configured to contact the tissue site. The dressing material can also have a plurality of pores. The method can further include applying a compressive force to the dressing material at an angle to the surface, the compressive force causing permanent deformation of the plurality of pores. Causing permanent deformation of the plurality of pores can comprise forming a plurality of compressed pores. Forming a plurality of compressed pores can include compressing the plurality of pores from a generally circular shape to a generally ovular shape.

First claim

What is claimed is:

1 . A method of manufacturing a dressing for treating a tissue site, the method comprising:
providing a dressing material having a surface configured to contact the tissue site, the dressing material having a plurality of pores; and applying a compressive force to the dressing material at an angle to the surface, the compressive force causing a permanent deformation of the plurality of pores.

2 . The method of claim 1 , wherein the method further comprises heating the dressing material.

3 . The method of claim 2 , wherein heating the dressing material comprises heating the dressing material to a temperature between about 120 Celsius (° C.) and about 260° C.

4 . The method of claim 1 or any of claims 2 - 3 , wherein the angle is about 90 degrees.

5 . The method of claim 1 or any of claims 2 - 4 , wherein causing the permanent deformation of the plurality of pores comprises forming a plurality of compressed pores.

6 . The method of claim 5 , wherein forming a plurality of compressed pores comprises compressing the pores from a generally circular shape to a generally ovular shape.

7 . The method of claim 6 , wherein the method further comprises orienting a major axis of the ovular-shaped pores perpendicular to the surface.

8 . The method claim 5 , wherein the plurality of compressed pores are configured to collapse from a relaxed position to a contracted position in response to an application of negative pressure.

9 . The method of claim 5 , wherein the plurality of compressed pores are configured to collapse in a direction parallel to the surface.

10 . The method of claim 1 or any of claims 2 - 9 , wherein applying the compressive force to the dressing material comprises increasing a density of the dressing material.

11 . The method of claim 1 or any of claims 2 - 10 , wherein providing a dressing material comprises providing an open-cell reticulated foam.

12 . The method of claim 1 or any of claims 2 - 11 , further comprising forming a plurality of holes in the dressing material, the plurality of holes extending into the dressing material from the surface.

13 . The method of claim 12 , wherein the plurality of holes are formed in the dressing material after applying the compressive force to the dressing material.

14 . The method of claim 12 , wherein the plurality of holes are a plurality of blind holes.

15 . The method of claim 14 , wherein the plurality of blind holes have a depth between about 5 mm to about 15 mm.

16 . The method of claim 12 , wherein the plurality of holes extend through the dressing material.

17 . A dressing for treating a tissue site, the dressing comprising a tissue interface having:
a first surface configured to face the tissue site; a second surface opposite the first surface; a thickness extending from the first surface to the second surface; and a plurality of pores, the plurality of pores having an elliptical shape and a major axis oriented perpendicular to the first surface and the second surface.

18 . The dressing of claim 17 , wherein the plurality of pores are configured to contract in a direction parallel to the first surface and the second surface.

19 . The dressing of claim 17 or claim 18 , further comprising a dressing length and a dressing width.

20 . The dressing of claim 19 , wherein the major axis is positioned perpendicular to the dressing length and parallel to the thickness.

21 . The dressing of claim 17 or any of claims 18 - 20 , wherein the plurality of pores are configured to contract in a direction perpendicular to the major axis.

22 . The dressing of claim 17 or any of claims 18 - 21 , further comprising a cover layer configured to be disposed over the second surface of the tissue interface.

23 . The dressing of claim 22 , wherein the cover layer comprises a liquid impermeable film.

24 . The dressing of claim 22 , wherein the cover layer comprises a polymer film.

25 . The dressing of claim 22 , further comprising a fluid port configured to be coupled to the cover layer and fluidly coupled to the tissue interface.

26 . The dressing of claim 17 or any of claims 18 - 25 , wherein the tissue interface comprises a felted foam.

27 . The dressing of claim 26 , wherein the felted foam is felted to a firmness factor of 2 to 10.

28 . The dressing of claim 26 , wherein the felted foam has a density of about 0.027 to about 0.034 g/cm 3 .

29 . The dressing of claim 17 or any of claims 18 - 28 , wherein the thickness of the tissue interface is between about 5 mm to about 15 mm.

30 . The dressing of claim 17 or any of claims 18 - 29 , further comprising a plurality of holes extending from the first surface to the second surface.

31 . The dressing of claim 30 , wherein the plurality of holes are blind holes.

32 . The dressing of claim 31 , wherein the plurality of holes have a depth between about 5 mm to about 15 mm.

33 . The dressing of claim 30 , wherein the plurality of holes extend through the thickness of the tissue interface from the first surface to the second surface.

34 . A system for providing negative-pressure therapy to a tissue site, the system comprising:
a tissue interface comprising:
a first surface configured to face the tissue site,
a second surface opposite the first surface,
a thickness extending from the first surface to the second surface, and
a plurality of pores, each of the pores having an ovoid shape oriented at an angle to the first surface;
a sealing member configured to be disposed over the tissue interface to create a sealed space; and a negative pressure source fluidly coupled to the sealed space.

35 . The system of claim 34 , wherein the angle is about 90°.

36 . The system of claim 34 or claim 35 , wherein the plurality of pores are configured to contract in a direction parallel to the first surface and the second surface.

37 . The system of claim 34 or any of claims 35 - 36 , wherein the sealing member is configured to be coupled to the second surface of the tissue interface with an adhesive.

38 . The system of claim 34 or any of claims 35 - 37 , wherein the sealing member comprises a polymer film.

39 . The system of claim 34 or any of claims 35 - 38 , wherein the tissue interface comprises a felted foam.

40 . The system of claim 39 , wherein the felted foam is felted to a firmness factor of 3 to 5.

41 . The system of claim 39 , wherein the felted foam has a density of about 0.027 to about 0.034 g/cm 3 .

42 . The system of claim 34 or any of claims 35 - 41 , wherein the tissue interface has a thickness of about 5 mm to about 15 mm.

43 . The system of claim 34 or any of claims 35 - 42 , wherein the tissue interface further comprises a plurality of apertures extending from the first surface toward the second surface.

44 . The system of claim 43 , wherein the plurality of apertures are blind apertures.

45 . The system of claim 44 , wherein the plurality of apertures have a depth between about 5 mm t

Assignees

• Kci Licensing Inc

Inventors

• Simmons Tyler H

Classifications

• A61F13/00987 Primary

  Apparatus or processes for manufacturing non-adhesive dressings or bandages · CPC title

• A61F13/05 Primary

  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

• A61F13/01025

  made of a single layer · CPC title

• A61F13/00068 Primary

  Human Necessities · mapped topic

• A61F13/00995

  for mechanical treatments · CPC title