TISSUE INTERFACE FOR NEGATIVE PRESSURE AND INSTILLATION THERAPY
Dressings, systems, methods for treating a tissue site, and methods for manufacturing a dressing are described. A dressing material can be provided. The dressing material can be felted to a first felting level, and localized portions of the dressing material can be felted to a second level. The localized portions can be a plurality of debridement cavities disposed in a contact surface. A tissue interface can have a first side, a second side, and a first thickness from the first side to the second side. A plurality of blind apertures an be disposed in the first side, each of the blind apertures having a second thickness from the first side to the second side. The tissue interface can have a first density at the first thickness and a second density at the second thickness.
1 . A method of manufacturing a dressing for treating a tissue site, the method comprising:
providing a dressing material;
felting the dressing material to a first felting level; and
felting localized portions of the dressing material to a second felting level to form a plurality of debridement cavities disposed in a contact surface.
2 . The method of claim 1 , wherein felting the dressing material to a first felting level comprises increasing a density of the dressing material.
3 . The method of claim 2 , wherein the density of the dressing material increases by a factor of three.
4 . The method of claim 1 , wherein felting localized portions of the dressing material to a second felting level comprises increasing a density of the dressing material at the plurality of debridement cavities.
5 . The method of claim 4 , wherein the density of the debridement cavities is five times greater than an original density of the dressing material.
6 . The method of claim 1 , wherein felting localized portions of the dressing material to a second felting level comprises applying a mandrel tool to the contact surface of the dressing material.
7 . The method of claim 6 , wherein the mandrel tool has a plurality of projections.
8 . The method of claim 7 , wherein the method further comprises heating the plurality of projections.
9 . The method of claim 1 , wherein felting the dressing material to a first felting level comprises compressing the dressing material from a thickness of about 30 mm to a thickness of about 10 mm.
10 . The method of claim 9 , wherein felting localized portions of the dressing material to a second felting level comprises compressing the localized portions of the dressing material from the thickness of about 10 mm to a thickness of about 2 mm to about 5 mm.
11 . The method of claim 1 , wherein felting localized portions of the dressing material to a second felting level comprises forming transition zones between the debridement cavities and the contact surface.
12 . The method of claim 11 , wherein the transition zones comprise large radii.
13 . The method of claim 1 , wherein felting localized portions of the dressing material to a second felting level comprises forming a plurality of voids.
14 . The method of claim 13 , wherein the forming the plurality of voids comprises forming a plurality of circular voids.
15 . The method of claim 1 , wherein providing the dressing material comprises providing an open-cell reticulated foam.
16 . A dressing for treating a tissue site, the dressing comprising a tissue interface having:
a first side, a second side, and a first thickness from the first side to the second side;
a plurality of blind apertures disposed in the first side, each of the blind apertures having a second thickness from the first side to the second side; and
the tissue interface having a first density at the first thickness and a second density at the second thickness.
17 . The dressing of claim 16 , wherein the second density is greater than the first density.
18 . The dressing of claim 16 , wherein the second density is five times greater than the first density.
19 . The dressing of claim 16 , wherein the second thickness is less than the first thickness.
20 . The dressing of claim 16 , wherein the first thickness is about 10 mm.
21 . The dressing of claim 16 , wherein the second thickness is between about 2 mm and about 4 mm.
22 . The dressing of claim 16 , further comprising transition zones between the first thickness and the second thickness.
23 . The dressing of claim 22 , wherein the transition zones comprise large radii.
24 . The dressing of claim 16 , wherein the tissue interface comprises an open-cell reticulated foam.
25 . A system for providing negative-pressure therapy to a tissue site, the system comprising:
a tissue interface having a first density at a first thickness and a second density at a second thickness, the tissue interface configured to be positioned adjacent to the tissue site;
a sealing member configured to be disposed over the tissue interface to create a sealed space; and
a negative-pressure source configure to be fluidly coupled to the sealed space.
26 . The system of claim 25 , wherein the second density is greater than the first density.
27 . The system of claim 25 , wherein the second density is five times greater than the first density.
28 . The system of claim 25 , wherein the second thickness is less than the first thickness.
29 . The system of claim 25 , wherein the first thickness is about 10 mm.
30 . The system of claim 25 , wherein the second thickness is between about 2 mm and about 4 mm.
31 . The system of claim 25 , further comprising transition zones between the first thickness and the second thickness.
32 . The system of claim 31 , wherein the transition zones comprise large radii.
33 . The system of claim 25 , wherein the tissue interface comprises an open-cell reticulated foam.
34 . A tissue interface for treating a tissue site, the tissue interface formed by a process comprising:
providing a dressing material;
felting the dressing material to a first felting level; and
felting localized portions of the dressing material to a second felting level to form a plurality of debridement cavities disposed in a contact surface.
35 . The tissue interface of claim 34 , wherein felting the dressing material to a first felting level comprises increasing a density of the dressing material.
36 . The tissue interface of claim 35 , wherein the density of the dressing material increases by a factor of three.
37 . The tissue interface of claim 34 , wherein felting localized portions of the dressing material to a second felting level comprises increasing a density of the dressing material at the plurality of debridement cavities.
38 . The tissue interface of claim 37 , wherein the density of the debridement cavities is five times greater than an original density of the dressing material.
39 . The tissue interface of claim 34 , wherein felting localized portions of the dressing material to a second felting level comprises applying a mandrel tool to the contact surface of the dressing material.
40 . The tissue interface of claim 39 , wherein the mandrel tool has a plurality of projections.
41 . The tissue interface of claim 40 , wherein the process further comprises heating the plurality of projections.
42 . The tissue interface of claim 34 , wherein felting the dressing material to a first felting level comprises compressing the dressing material from a thickness of about 30 mm to a thickness of about 10 mm.
43 . The tissue interface of claim 42 , wherein felting localized portions of the dressing material to a second felting level comprises compressing the localized portions of the dressing material from the thickness of about 10 mm to a thickness of about 2 mm to about 5 mm.
44 . The tissue interface of claim 34 , wherein felting localized portions of the dressing material to a second felting level comprises forming transition zones between the debridement cavities and the contact surface.
45 . The tissue interface of claim 44 , wherein the transition zones comprise large radii.
46 . The tissue interface of claim 34 , wherein felting localized portions of the dressing material to a second felting level comprises forming a plurality of voids.
47 . The tissue interface of claim 46 , wherein the forming the plurality of voids comprises forming a plurality of circular voids.
48 . The tissue interface of claim 34 , wherein providing the dressing material comprises providing an open-cell reticulated foam.
49 . The systems, methods, and apparatuses as described and illustrated herein.