Antimicrobial wounddressing
AssigneeBeiersdorf AG
InventorsPeter Hilfenhaus, Heike John, Harald Buettner
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Abstract
An antimicrobial composite which comprises a first, liquid-permeable layer and a second layer arranged on the first layer. An antimicrobial metal in elemental form is present between the first and second layers and substantially no antimicrobial metal in elemental form is present on exterior surfaces of the composite. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Claims34
A process of making an antimicrobial composite, the process comprising bonding together a first, liquid-permeable material having a thickness of from about 0.05 mm to about 0.5 mm and a second material which is at least one of liquid-permeable and liquid-absorbing, wherein at least one of the first and second materials is coated with an antimicrobial metal in elemental form on a surface thereof which faces the other material, and wherein substantially no antimicrobial metal in elemental form is present on an exterior surface of the resultant composite.
A process of making an antimicrobial composite, the process comprising bonding together (a) a first, liquid-permeable material which comprises a polyethylene mesh comprising openings having a size of from about 400 μm to about 700 μm and (b) a second material which is at least one of liquid-permeable and liquid-absorbing, wherein at least one of the first and second materials is coated with an antimicrobial metal in elemental form on a surface thereof which faces the other material, and wherein substantially no antimicrobial metal in elemental form is present on an exterior surface of the resultant composite.
A process of making an antimicrobial composite, the process comprising bonding together a first, liquid-permeable material and a second material which is at least one of liquid-permeable and liquid-absorbing, wherein at least one of the first and second materials is coated with an antimicrobial metal in elemental form on a surface thereof which faces the other material, and wherein substantially no antimicrobial metal in elemental form is present on an exterior surface of the resultant composite, the antimicrobial metal comprising silver and alloys thereof and the silver being present in an amount of from about 1 mg/m2 to about 1 g/m2.
A process of making an antimicrobial composite, the process comprising bonding together a liquid-permeable sheet-like material and a liquid-absorbing material, wherein at least the liquid-permeable material is coated by vapor deposition with silver in elemental form in an amount of from about 10 mg/m2 to about 600 mg/m2 on a surface thereof which faces the liquid-absorbing material, and wherein substantially no silver in elemental form is present on an exterior surface of the resultant composite.
A process of making an antimicrobial composite, the process comprising providing a liquid-permeable material which comprises at least one of a perforated film and a mesh, coating one side of the material by vapor deposition with silver in an amount of from about 50 mg/m2 to about 600 mg/m2 and bonding a liquid-absorbing material to a side of the liquid-permeable material which has the silver thereon, wherein substantially no silver in elemental form is present on an exterior surface of the resultant composite and the composite has an area weight of from about 50 g/m2 to about 230 g/m2.
Dependencies are inferred from the claim text.