VACUUM WOUND THERAPY WOUND DRESSING WITH VARIABLE PERFORMANCE ZONES

摘要

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 peal-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.

主权项

1. A cover layer for a wound dressing for use in vacuum wound therapy, the cover layer comprising:
a central zone defined by a portion of a moisture vapor permeable membrane devoid of any coating deterring the transmission of moisture through the membrane; a peripheral zone substantially surrounding the central zone, the peripheral zone adapted to provide a seal around a perimeter of a wound bed; and at least one intermediate zone at least partially disposed between the central zone and the peripheral zone, the at least one intermediate zone comprising a substance for imparting a therapeutic effect to the wound bed.