Tissue interface for tissue debridement
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.
1 . 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;
a plurality of pores, the plurality of pores having an elliptical shape and a major axis of the plurality of pores being oriented perpendicular to the first surface and the second surface; and
a plurality of holes disposed in the first surface and extending from the first surface toward the second surface to form walls perpendicular to the first surface, a minor axis of the plurality of pores being oriented perpendicular to a surface of the walls of the plurality of holes.
2 . The dressing of claim 1 , wherein the plurality of pores are configured to contract in a direction parallel to the first surface and the second surface.
3 . The dressing of claim 1 , further comprising a dressing length and a dressing width.
4 . The dressing of claim 3 , wherein the major axis is positioned perpendicular to the dressing length and parallel to the thickness.
5 . The dressing of claim 1 , wherein the plurality of pores are configured to contract in a direction perpendicular to the major axis.
6 . The dressing of claim 1 , further comprising a cover layer configured to be disposed over the second surface of the tissue interface.
7 . The dressing of claim 6 , wherein the cover layer comprises a liquid-impermeable film.
8 . The dressing of claim 6 , wherein the cover layer comprises a polymer film.
9 . The dressing of claim 6 , further comprising a fluid port configured to be coupled to the cover layer and fluidly coupled to the tissue interface.
10 . The dressing of claim 1 , wherein the tissue interface comprises a felted foam.
11 . The dressing of claim 10 , wherein the felted foam is felted to a firmness factor of 2 to 10.
12 . The dressing of claim 10 , wherein the felted foam has an uncompressed density of about 0.027 to about 0.034 g/cm 3 .
13 . The dressing of claim 1 , wherein the thickness of the tissue interface is between about 5 mm to about 15 mm.
14 . The dressing of claim 1 , wherein the plurality of holes are blind holes.
15 . The dressing of claim 14 , wherein the plurality of holes have a depth between about 5 mm to about 15 mm.
16 . The dressing of claim 1 , wherein the plurality of holes extend through the thickness of the tissue interface from the first surface to the second surface.
17 . 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,
a plurality of pores, each pore of the plurality of pores having an ovoid shape oriented at an angle to the first surface, and
a plurality of apertures extending from the first surface toward the second surface to form walls perpendicular to the first surface, a minor axis of the plurality of pores being oriented perpendicular to a surface of the walls of the plurality of apertures;
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.
18 . The system of claim 17 , wherein the angle is about 90°.
19 . The system of claim 17 , wherein the plurality of pores are configured to contract in a direction parallel to the first surface and the second surface.
20 . The system of claim 17 , wherein the sealing member is configured to be coupled to the second surface of the tissue interface with an adhesive.
21 . The system of claim 17 , wherein the sealing member comprises a polymer film.
22 . The system of claim 17 , wherein the tissue interface comprises a felted foam.
23 . The system of claim 22 , wherein the felted foam is felted to a firmness factor of 3 to 5.
24 . The system of claim 22 , wherein the felted foam has an uncompressed density of about 0.027 to about 0.034 g/cm 3 .
25 . The system of claim 17 , wherein the tissue interface has a thickness of about 5 mm to about 15 mm.
26 . The system of claim 17 , wherein the plurality of apertures are blind apertures.
27 . The system of claim 26 , wherein the plurality of apertures have a depth between about 5 mm to about 15 mm.
28 . The system of claim 17 , wherein the plurality of apertures extend through the thickness of the tissue interface from the first surface to the second surface.