Polycarbonate-polyurethane dispersions for thrombo-resistant coatings
First Claim
1. A medical device having a surface, said surface having a biocompatible coating formed thereon, the coating having a polyurethane-polycarbonate composition free of organic solvent, the coating containing an internal emulsifying agent with one or more organic acid functional groups and an excess of a polyfunctional cross-linking agent, said medical device adapted for insertion into a mammalian body, said coating formed on an external surface of said medical device.
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Accused Products
Abstract
A coating for a medical device is described which enhances the bio-activity of the surface of a medical device, rendering the surface substantially bio-compatible. The bio-compatible coating is formed from a composition which includes an aqueous emulsion or dispersion of a polycarbonate-polyurethane composition and an excess of polyfunctional cross-linking agent.
78 Citations
6 Claims
- 1. A medical device having a surface, said surface having a biocompatible coating formed thereon, the coating having a polyurethane-polycarbonate composition free of organic solvent, the coating containing an internal emulsifying agent with one or more organic acid functional groups and an excess of a polyfunctional cross-linking agent, said medical device adapted for insertion into a mammalian body, said coating formed on an external surface of said medical device.
Specification