Bioabsorbable wound dressing
AssigneeKimberly-Clark Worldwide, Inc.
InventorsSharon L. Greene, Archel A. Ambrosio, Rosann M. Matthews Kaylor, Dave A. Soerens, Sohail Malik
Life of this patent
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Abstract
A wound dressing includes a first layer located adjacent the wound and which comprises a material that is bioabsorbable, porous and adapted for serving as a scaffold for cell attachment and proliferation; and a second layer which is in contact with the first layer and which comprises an absorbent, gel forming material adapted for serving as a barrier to cell adhesion and penetration. A method of treating a wound with the dressing is also disclosed.
Claims23
A wound dressing comprising:
- (a) a first layer located adjacent the wound and which comprises a fibrous nonwoven material that is bioabsorbable, has pores in the range of 50-400 microns in size, and is adapted for serving as a scaffold for cell attachment and proliferation;
- and
- (b) a second layer which is in contact with the first layer and which comprises an absorbent, gel forming material adapted for serving as a barrier to cell adhesion and penetration.
A wound dressing comprising:
- (a) a first layer located adjacent the wound and which comprises a material that is bioabsorbable, porous and adapted for serving as a scaffold for cell attachment and proliferation;
- (b) a second layer comprising a transparent film of a breathable material that can transport liquid peripherally to the edges of said second layer, but which is adapted for serving as a barrier to cell adhesion and penetration;
- and
- (c) a third layer which is in contact with the second layer and which comprises an absorbent material.
A method for treating a wound comprising applying to the wound a wound dressing comprising:
- (a) a first layer located adjacent the wound and which comprises a fibrous nonwoven material that is bioabsorbable, has pores in the range of 50-400 microns in size, and is adapted for serving as a scaffold for cell attachment and proliferation;
- and
- (b) a second layer which is in contact with the first layer and which comprises an absorbent, gel forming material adapted for serving as a barrier to cell adhesion and penetration.
A method for treating a wound comprising applying to the wound a wound dressing comprising a layer located adjacent the wound which comprises a nonwcven fabric having pores of from about 50 microns to about 400 microns in size and comprising a material selected from the group consisting of poly(lactic acid), poly(glycolic acid), copolymers of lactic and glycolic acids, poly(ether-co-esters), poly(hydroxybutyrate), copolymers of lactic acid and ε-aminocapronic acid, lactide polymers, copolymers of poly(hydroxybutyrate) and 3-hydroxyvalerate, polyesters of succinic acid, and cross-linked hyaluronic acid.
A method for treating a wound comprising applying to the wound a wound dressing comprising:
- (a) a first layer located adjacent the wound and which comprises a nonwoven fabric having pores of from about 50 microns to about 400 microns in size and comprising a material selected from the group consisting of poly(lactic acid), poly(glycolic acid), copolymers of lactic and glycolic acids, poly(ether-co-esters), poly(hydroxybutyrate), copolymers of lactic acid and ε-aminocapronic acid, lactide polymers, copolymers of poly(hydroxybutyrate) and 3-hydroxyvalerate, polyesters of succinic acid, cross-linked hyaluronic acid and cross-linked collagen;
- (b) a second layer which is in contact with the first layer and which comprises a hydrogel having pores of less than about 10 microns in size when the hydrogel is in a hydrated state;
- and
- (c) third layer which is in contact with the second layer and which comprises a material that is penetrable to vapor but acts as a barrier to the transmission of liquid and microorganisms.
Dependencies are inferred from the claim text.