Patent ID: 8858983

Claim:
An antimicrobial accessory comprising: a first layer comprising a first biodegradable polymer and an antimicrobial; a sacrificial diffusion layer formed on the first layer, wherein the sacrificial diffusion layer comprises a second biodegradable polymer; and a topcoat formed on the sacrificial diffusion layer, wherein the topcoat comprises a third biodegradable polymer and an antioxidant, wherein the topcoat defines a plurality of channels formed in the topcoat, wherein the plurality of channels extend from an outer surface of the topcoat to the sacrificial diffusion layer, and wherein the sacrificial diffusion layer is configured to substantially prevent mixing of the antioxidant and the antimicrobial in the sacrificial diffusion layer due to diffusion of the antioxidant from the topcoat into the sacrificial diffusion layer and diffusion of the antimicrobial from the first layer into the sacrificial diffusion layer.