Vacuum wound therapy wound dressing with variable performance zones
AssigneeSmith & Nephew, Inc.
InventorRonald F. Vitaris
Life of this patent
Estimating the term…
Abstract
A dressing for an open wound includes a cover layer dimensioned for positioning relative to a wound bed. The cover layer permits an evacuation of the space around the wound bed such that a sub-atmospheric pressure may be established to stimulate healing and facilitate the removal of fluid from the wound. Multiple performance zones in the cover layer allow the wound dressing to remain in position through repeated cycles of evacuation without placing undue strain on the wound bed. An outer peripheral zone may include a high peel-strength adhesive while an intermediate zone may include a shear resistant adhesive. A central zone may be devoid of any coating to maximize moisture transmission through cover layer.
Claims18
A wound dressing for use with a negative pressure wound therapy apparatus, the wound dressing comprising:
- a first adhesive and a second adhesive configured to form a seal with skin surrounding a wound and stabilize the wound dressing over the wound;
- wherein the first adhesive is arranged in a plurality of spaced apart, non-overlapping circular regions and the second adhesive is provided on a surface that surrounds the first adhesive;
- wherein the first adhesive is different from the second adhesive.
A wound dressing for use with a negative pressure wound therapy apparatus, the wound dressing comprising:
- a first zone comprising an adhesive;
- and
- a second zone comprising a gel;
- wherein the adhesive is arranged in a plurality of spaced apart, non-overlapping circular regions and the gel is provided on a surface that surrounds the adhesive.
Dependencies are inferred from the claim text.