BIOPOLYMER MULTI-LAYER MULTI-FUNCTIONAL MEDICAL DRESSING AND METHOD OF MAKING SAME
First Claim
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1. A medical dressing comprising a biopolymer layered structure, the biopolymer layered structure comprising:
- a biodegradable, bioresorbable layer comprising a plurality of biodegradable, bioresorbable fibers, wherein the fibers are oriented to provide compression resistance and maintain paths for liquid-flow and air-flow, and a bioresorbable, biodegradable hydrophilic surface coating on a substantial number of the fibers;
the fibers incorporating one or more bioactive agents.
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Abstract
The Technology described herein applies to medical dressings designed to heal wounds in the area of advanced wound care, inclusive of Negative Pressure Wound Therapy (NPWT), and describes novel wound healing absorbent scaffolds and dressing based on natural and naturally-derived material and fibers, preferentially poly (lactic) acid fibers and alginate materials.
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Citations
35 Claims
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1. A medical dressing comprising a biopolymer layered structure, the biopolymer layered structure comprising:
a biodegradable, bioresorbable layer comprising a plurality of biodegradable, bioresorbable fibers, wherein the fibers are oriented to provide compression resistance and maintain paths for liquid-flow and air-flow, and a bioresorbable, biodegradable hydrophilic surface coating on a substantial number of the fibers;
the fibers incorporating one or more bioactive agents.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method of treating a wound, the method comprising:
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a) providing a wound dressing comprising (i) a bioresorbable biodegradable non-woven material comprising a plurality of bioresorbable fibers incorporating a bioactive agent, the wound dressing having a wound interface for contacting a surface of a wound, wherein the fibers are predominately oriented in a direction transverse to an exposed surface to provide compression resistance and maintain paths for liquid-flow and air-flow, and (ii) a bioresorbable hydrophilic surface coating on a substantial number of the fibers proximal to the wound interface; b) applying said wound dressing to the wound with the bioresorbable hydrophilic surface in contact with the surface of the wound, thereby protecting the wound by providing resistance to compression, maintaining paths for air-flow and fluid-flow and removing exudate from the wound through one or more of absorption and negative pressure. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification