Patent ID: 7605298

Claim:
A wound covering, wherein said wound covering comprises a first layer and a second layer, wherein said first layer comprises an absorbent matrix having a surface and an anti-microbially active substance, wherein said anti-microbially active substance is chemically or physically bonded to said surface, wherein the anti-microbially active substance is a metal, wherein said metal is in the form of clusters, wherein said surface and said substance are coated with a hydrophilic polymer, wherein said anti-microbially active substance is present in a layer having a mean thickness of 5 to 100 nm, wherein said second layer comprises a gas-permeable, liquid-impermeable film and a self-adhesive first area, wherein said second layer further comprises a second area, wherein said first area surrounds said second area, wherein said matrix is connected to said film in said second area, wherein said wound covering adheres to human or animal skin by means of said self-adhesive first area, wherein the adherence forms a liquid-tight inner space into which a liquid can be deposited.