Antimicrobial or wound care materials, devices and uses
AssigneeSmith & Nephew, Inc.
InventorsAmy Brewster, Robert Crump, Helene Anne Lecomte, David Stephenson, Matthew Wray
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Abstract
An antimicrobial material including a composite of a matrix component comprising a flexible hydrophilic polymer foam or fiber matrix comprising two matrix faces providing a release face and a reverse face or two release faces, and therebetween a structural matrix framework defining a network of cells having a cell network surface and therein a network of pores or cell openings, and a powder charge component comprising antimicrobial additive or wound care additive, wherein said powder charge is comprised at one said release face or both said faces and/or within said cell network.
Claims21
1-73. (canceled)
Material which is a wound care material comprising:
- a flexible polymer foam or fibre matrix comprising a wound facing face and a reverse face or two wound facing faces and therebetween a structural matrix defining a network of cells, and
- a powder charge comprising a wound dressing additive,
- wherein said powder charge is comprised at said wound facing face or said reverse face and within said cell network, wherein said powder charge is within said cell network in diminishing amount with increasing depth within said network;
- wherein more than 50% of the powder charge is present within 0.8 mm from a surface of the foam or fibre matrix.
A method of treating a wound, comprising:
- placing a wound dressing comprising a loaded wound dressing layer into or over the wound, wherein the loaded wound dressing layer comprises a porous matrix and a powder charge of antimicrobial release additive loaded within the matrix, wherein more than 50% of the powder charge is present within 0.8 mm from a surface of a wound facing surface;
- wherein the antimicrobial release additive is activated for the release of an antimicrobial agent into the wound from the wound dressing upon contact with moist or aqueous medium.
A wound dressing, comprising:
- a loaded wound dressing layer comprising:
- a porous matrix comprising a wound facing face and a reverse face;
- and
- a powder charge of antimicrobial release additive loaded within the matrix, wherein the powder charge decreases in amount with increasing distance from the wound facing face and more than 50% of the powder charge is present within 0.8 mm from a surface of the wound facing face.
Dependencies are inferred from the claim text.