Deformable dressing for negative-pressure therapy
AssigneeKCI Manufacturing Unlimited Company
InventorChristopher Brian Locke
Life of this patent
Estimating the term…
Abstract
A dressing for treating a tissue site with negative pressure may have, in a relaxed state in which no external forces are applied to the dressing, both a first non-planar surface and a second non-planar surface opposite the first non-planar surface. The dressing may include a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform. The dressing may also include a manifold layer coupled to the fluid management layer.
Claims23
A dressing for treating a tissue site with negative pressure, the dressing having, in a relaxed state in which no external forces are applied to the dressing, both a first non-planar surface and a second non-planar surface opposite the first non-planar surface, the dressing comprising:
- a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform;
- and
- a manifold layer coupled to the fluid management layer;
- wherein at least a portion of the dressing comprises one or more tension-relief regions having a decreased tensile strength relative to another portion of the dressing, and wherein the one or more tension-relief regions include a non-planar surface feature.
A method for forming a dressing for treatment of a tissue site with negative pressure, the dressing comprising a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform and also comprising a manifold layer coupled to the fluid management layer, the method comprising:
- heating the fluid management layer and the manifold layer;
- and
- while heated, conforming the fluid management layer and the manifold layer to a form,
- wherein the method imparts to the dressing, in a relaxed state in which no external forces are applied to the dressing, both a first non-planar surface and a second non-planar surface opposite the first non-planar surface.
A dressing for treating a tissue site with negative pressure, the dressing comprising:
- a first non-planar surface;
- a second non-planar surface opposite the first non-planar surface;
- a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform;
- and
- a foam manifold layer coupled to the fluid management layer,
- wherein the first non-planar surface is a surface of the fluid management layer and comprises a convex surface, and wherein the second non-planar surface is a surface of the manifold layer and comprises a concave surface, and wherein at least a portion of the dressing exhibits a decrease in tensile strength.
A method for forming a dressing for treatment of a tissue site with negative pressure, the dressing comprising a fluid management layer comprising a polymer film and a plurality of fluid restrictions extending through the polymer film and configured to deform and also comprising a manifold layer coupled to the fluid management layer, the method comprising:
- heating the fluid management layer and the manifold layer;
- and
- while heated, conforming the fluid management layer and the manifold layer to a form,
- wherein at least a portion of the dressing exhibits a decrease in tensile strength after the thermoforming process.
Dependencies are inferred from the claim text.