Dressing with protruding layer allowing for cleansing of wound bed macro deformations
A dressing that includes a contact layer having walls defining a plurality of holes and a retainer layer comprising portions protruding into holes of a contact layer is provided herein. Systems, methods and kits using the dressing for debriding a tissue site are also provided herein.
1. A dressing for treating a tissue site with negative pressure, the dressing comprising:
a contact layer comprising a first manifold having a plurality of holes through the first manifold; and
a retainer layer comprising a second manifold having a planar surface configured to be positioned adjacent to and in contact with a surface of the contact layer; and
a plurality of projections coupled to the planar surface and extending from the planar surface at ambient pressure, the plurality of projections being formed from an open-cell, reticulated foam, and each of the plurality of projections configured to protrude into a respective hole of the plurality of holes of the contact layer at ambient pressure.
2. The dressing of claim 1 , wherein the retainer layer is more compressible than the contact layer.
3. The dressing of claim 1 , wherein the plurality of projections are complementary to the plurality of holes.
4. The dressing of claim 1 , wherein at least some of the plurality of projections have a tapered end disposed within the plurality of holes.
5. The dressing of claim 1 , wherein one or more of the plurality of projections have a ragged outer surface.
6. The dressing of claim 1 , wherein at least one of the plurality of holes has a diameter between 1 millimeter (mm) and 30 mm and a height between 1 mm and 30 mm.
7. The dressing of claim 1 , wherein the retainer layer comprises a foam having an average pore size between 10 pores per inch (ppi) and 80 ppi.
8. The dressing of claim 1 , wherein the contact layer and retainer layer are connected as an integral layer.
9. The dressing of claim 1 , wherein the dressing further comprises a cover layer configured to be positioned adjacent to the retainer layer.
10. The dressing of claim 1 , wherein the plurality of holes are configured to collapse from a relaxed position to a contracted position in response to negative pressure.