Foam structure wound inserts for directional granulation
AssigneeKCI Licensing, Inc.
InventorsBenjamin Stokes, Timothy Mark Robinson
Life of this patent
Estimating the term…
Abstract
A wound treatment system comprises a wound-treatment apparatus and a wound dressing coupled to the apparatus. The wound dressing includes a foam structure wound insert having pores with a greater cross-sectional area when viewed from a first direction and a smaller cross-sectional area when viewed from an orthogonal direction. Methods for making such wound inserts may include compressing foam structure material having pores with a substantially uniform cross-sectional area. Methods for treating a wound using a wound insert.
Claims22
A wound insert for use with a wound dressing, the wound insert comprising:
- a foam structure having a first surface, a second surface generally parallel to the first surface, and a third surface extending between the first surface and the second surface;
- and
- a plurality of pores distributed through the foam structure in an open-cell relation forming flow channels for receiving and distributing fluid to a wound, each pore of the plurality of pores having a first cross-sectional area parallel to the first surface and a second cross-sectional area perpendicular to the first surface wherein the first cross-sectional area of most of the pores is greater than the second cross-sectional area of the pores.
A wound insert for use with a wound dressing, the wound insert comprising:
- a foam structure having a first surface and a second surface generally parallel to the first surface;
- and
- a plurality of pores distributed through the foam structure and formed having an open-cell relation including flow channels for receiving and distributing fluid to a wound, wherein flow channels formed by pores extending in a direction perpendicular to the first surface have a greater cross-section than the flow channels formed by pores extending in a direction parallel to the first surface.
A wound-treatment method comprising:
- positioning a wound insert on a wound of a patient, the wound insert comprising:
- a first surface having a plurality of pores with a first average cross-sectional area;
- a second surface having a plurality of pores with a second average cross-sectional area that is less than the first average cross-sectional area
- orienting the wound insert such that the first surface is proximal a bottom surface of the wound;
- and
- coupling a drape to skin adjacent the wound such that the drape covers the wound insert and the wound, and forms a space between the drape and the wound.
A method of making a wound insert, comprising:
- applying a compressive force to foam structure comprising a plurality of pores,
- wherein the compressive force is applied in a first direction against a first surface;
- creating a reduced pore size on a second surface of the foam structure, wherein the second surface is substantially parallel to the first direction;
- and
- removing the compressive force from the foam structure, wherein the reduced pore size on the second surface of the foam structure is maintained after the compressive force is removed.
Dependencies are inferred from the claim text.