Medicated, low adherency wound dressings
AssigneeSmith and Nephew Associated Companies Limited
InventorsStephen M. Lang, David F. Webster
Life of this patent
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Abstract
The present invention is directed to the manufacture and use of absorptive wound dressings for treatment of burns and other wounds wherein the dressing has a reduced tendency to adhere to the wound and can act as a bacterial barrier. The wound dressing is comprised of a wound facing layer, an intermediate absorbent layer and an outer layer. The wound dressing of the present invention also has a topically effective medicament for treatment of burns and other wounds.
Claims13
A conformable, low adherency wound dressing which comprises:
- (a) A low adherency wound facing layer 0.05-2.5 mm thick which is a conformable elastomeric apertured net;
- (b) An absorbent layer comprising a conformable hydrophilic foam 0.5-20 mm thick;
- (c) A therapeutically effective amount of a medicament suitable for a topical application to humans located in the hydrophilic foam layer;
- and
- (d) A continuous conformable moisture vapor permeable outer film layer which acts as a bacterial barrier and has a moisture vapor transmission rate of from 300-5,000 grams/sq. meter/24 hours at 37.degree. C. at 100%-10% relative humidity difference, said wound facing layer and said outer layer being laminated to opposing faces of said absorbent layer over the operative area of the dressing.
A packaged sterile conformable, low adherency wound dressing which comprises:
- (a) A low adherency wound facing layer 0.05-2.5 mm thick which is a conformable elastomeric apertured net;
- (b) An absorbent layer comprising a conformable hydrophilic foam 0.5-20 mm thick;
- (c) A therapeutically effective amount of medicament suitable for a topical application to humans located in the hydrophilic foam layer;
- and
- (d) A continuous conformable moisture vapor permeable outer film layer which acts as a bacterial barrier and has a moisture vapor transmission rate of from 300-5,000 grams/sq. meter/24 hours at 37.degree. C. at 100%-10% relative humidity difference, said wound facing layer and said outer layer being laminated to opposing faces of said absorbent layer over the operative area of the dressing, wherein said sterile dressing is within a bacteria-impervious package.
Dependencies are inferred from the claim text.