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US 10,299,472 B2Granted
Coating material
AssigneesBio-Gate AG, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsMichael Wagener, Klaus Dieter Vissing, Dirk Salz, Peter Steinrücke
Life of this patent
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Abstract
The invention relates to an antimicrobial and preferably non-cytotoxic coating material and to use of said coating material.
Claims20
A device having an antimicrobial and non-cytotoxic coating, comprising:
- a) a substrate comprising a surface, wherein:
- (i) the substrate comprises a material selected from the group consisting of metal and plastic,
- (ii) the substrate has a form selected from the group consisting of particles and fibers, or
- (iii) both option (i) and option (ii);
- b) a biocide layer covering the surface, said biocide layer having a biocidal active agent in the form of single particles, chains of particles, or both, and
- c) a transport control layer covering the biocide layer, having a thickness and porosity adjusted to release an antimicrobial and non-cytotoxic quantity of the biocidal active agent out of the biocide layer and through the transport control layer,
- wherein the transport control layer is a plasma polymer layer and/or a sputter-applied layer and wherein the transport control layer has a silicon content of 20 to 60%, a carbon content between 10 and 30% and an oxygen content of 30 to 50%, wherein the transport control layer is hydrophilic, wherein the particles of the single particles or chains of particles have a mean particle size of 5-100 nm.
4 more elements
A device having an antimicrobial and non-cytotoxic coating, comprising:
- a) a substrate comprising a surface, wherein:
- (i) the substrate comprises a material selected from the group consisting of metal and plastic,
- (ii) the substrate has a form selected from the group consisting of particles and fibers, or
- (iii) both option (i) and option (ii);
- b) a biocide layer covering the surface, said biocide layer having a biocidal active agent in the form of single particles, chains of particles, or both, and
- c) a transport control layer covering the biocide layer, having a thickness and porosity adjusted to release an antimicrobial and non-cytotoxic quantity of the biocidal active agent out of the biocide layer and through the transport control layer,
- wherein the transport control layer contacts the biocide layer,
- wherein the transport control layer is a plasma polymer layer and/or a sputter-applied layer and wherein the transport control layer has a silicon content of 20 to 60%, a carbon content between 10 and 30% and an oxygen content of 30 to 50%, wherein the transport control layer is hydrophilic, wherein the particles of the single particles or chains of single particles have a mean particle size of 5-100 nm.
5 more elements
Dependencies are inferred from the claim text.