Granted Patent B2

US 12,629,287 · App. 17/779,792 · Granted May 19, 2026

Inventors: Justin Rice (Denver, CO); Shannon C. Ingram (Bulverde, TX)

Assignee: KCI Manufacturing Unlimited Company

A61F13/05A61F13/022A61F13/0289A61F2013/00089

Abstract

Claims (19)

1 . A dressing for treating a tissue site, the dressing comprising:

a contact layer formed from a porous material and having a first side and a second side, the first side configured to be positioned adjacent to the tissue site, the contact layer having a plurality of holes extending through the contact layer from the first side to the second side;

a cover layer formed from a porous material and having a first side and a second side, the first side coupled to the contact layer; and

at least one retainer layer formed from a porous material, the at least one retainer layer removably coupled to the second side of the cover layer.

2 . The dressing of claim 1 , wherein the cover layer is adhered to the contact layer.

3 . The dressing of claim 1 , wherein the cover layer is coupled to the contact layer using a hot-melt adhesive.

4 . The dressing of claim 1 , wherein the at least one retainer layer is hydrophilic.

5 . The dressing of claim 1 , wherein the at least one retainer layer is hydrophobic.

6 . The dressing of claim 1 , wherein the at least one retainer layer comprises a first retainer layer and a second retainer layer, wherein the first retainer layer is removably coupled to the cover layer and the second retainer layer is removably coupled to the first retainer layer.

7 . The dressing of claim 1 , wherein the at least one retainer layer has a first side and a second side, the dressing further comprising a polyurethane film layer, the polyurethane film layer having a plurality of perforations, a first adhesive on a first side, and a second adhesive on a second side, the second adhesive of the polyurethane film layer adjacent to the first side of the at least one retainer layer.

8 . The dressing of claim 7 , wherein the second adhesive has a higher bond strength than the first adhesive.

9 . The dressing of claim 7 , wherein the at least one retainer layer is configured to be removed from the cover layer and the second adhesive is configured to retain the polyurethane film layer and the first adhesive with the at least one retainer layer.

10 . The dressing of claim 1 , wherein the cover layer is permanently coupled to the contact layer.

11 . The dressing of claim 1 , further comprising an adhesive layer disposed between the contact layer and the cover layer, the adhesive layer adhering the contact layer to the cover layer.

12 . The dressing of claim 11 , wherein the adhesive layer comprises a hot-melt adhesive.

13 . The dressing of claim 1 , wherein:

the contact layer is formed from a felted open-cell reticulated foam;

the cover layer is formed from an open-cell reticulated foam; and

the at least one retainer layer is formed from an open-cell reticulated foam.

Assignments (4)

Continuity (2)

References Cited (366)