Reduced-pressure dressings employing tissue-fixation elements
A reduced-pressure system for treating a tissue site on a patient includes a distribution manifold that adheres to a tissue site to allow retention without external support. The distribution manifold includes a porous member and a tissue-fixation element. The tissue-fixation element maintains the porous member substantially adjacent to the tissue site while a sealing member is applied. In one instance, the tissue-fixation element is a soluble adhesive that partially covers either the tissue-facing side of the porous member or a tissue-facing side of a fluid-permeable substrate layer that is on the tissue-facing side of the porous member. Other systems, distributions manifolds, and methods are presented.
1. A reduced-pressure system for treating a tissue site, comprising:
a porous member comprising a plurality of flow channels for distributing reduced pressure;
a fenestrated film coupled to the porous member;
an adhesive layer coupled to the fenestrated film opposite the porous member; and
a sealing member configured to create a sealed space containing the porous member, wherein the porous member is between the fenestrated film and the sealing member.
2. The system of claim 1 , wherein the porous member comprises foam.
3. The system of claim 1 , wherein the porous member comprises a felted mat.
4. The system of claim 1 , wherein the adhesive layer has a tackiness strength that varies at different locations on the fenestrated film.
5. The system of claim 1 , wherein the adhesive layer partially covers the fenestrated film.
6. The system of claim 1 , wherein the adhesive layer is configured to allow fluid flow between portions of the adhesive layer on the fenestrated film.
7. The system of claim 1 , wherein the adhesive layer comprises a spaced pattern configured to allow fluid flow through the adhesive layer.
8. The system of claim 1 , wherein the adhesive layer comprises an open area configured to allow fluid flow through the adhesive layer and the fenestrated film.
9. The system of claim 1 , wherein the sealing member is coupled to the porous member.
10. The system of claim 1 , wherein the adhesive layer extends beyond the porous member to form an extension portion.
11. The system of claim 10 , wherein the extension portion is configured to aid in off loading forces to the epidermis proximate to the tissue site.
12. A dressing for treating a tissue site with reduced pressure, the dressing comprising:
a first foam member;
a second foam member coupled to the first foam member, the second foam member having a density higher than a density of the first foam member;
an adhesive member coupled to the second foam member; and
a sealing member configured to create a sealed space.
13. The dressing of claim 12 , wherein the adhesive member comprises a pressure-sensitive adhesive.
14. The dressing of claim 12 , wherein the adhesive member is not water-soluble.
15. The dressing of claim 12 , wherein the adhesive member comprises silicone.
16. The dressing of claim 12 , wherein the adhesive member comprises silicone gel.
17. A dressing for treating a tissue site with reduced pressure, the dressing comprising:
an open-cell foam member configured to distribute reduced pressure;
a fenestrated film coupled to the open-cell foam member; and
an adhesive layer coupled to the fenestrated film opposite the open-cell foam member, wherein the adhesive layer includes one or more openings configured to allow fluid flow through the adhesive layer.
18. The dressing of claim 17 , further comprising a sealing member configured to be applied to the tissue site to create a sealed space containing the open-cell foam member.
19. The dressing of claim 17 , wherein the adhesive layer extends beyond the open-cell foam member to form an extension portion.
20. The dressing of claim 17 , further comprising an absorptive member.