Medical apparatus having protective, lubricious coating
AssigneeC. R. Bard, Inc.
InventorMargaret P. Kiezulas
Life of this patent
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Abstract
A method for providing a medical apparatus with a protective, lubricious coating is described. The method comprises providing a coating solution which contains a protective compound such as a urethane, a slip additive such as a siloxane, and optionally, a crosslinking agent for the protective compound such as a polyfunctional aziridine, coating the solution onto a surface of a medical apparatus and allowing the coating to set. The resulting surface coating is lubricious, tough and flexible. The coating is well suited for use with materials used as components of balloon catheters.
Claims32
A method for providing a protective, lubricious coating on surfaces cf medical apparatus, the method comprising:
- a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%;
- b) applying the coating solution to a surface of the medical apparatus;
- and,
- c) allowing the coating to set into a layer upon the apparatus surface.
A medical apparatus having a protective, lubricious surface coating, the coating comprising a crosslinked, water-based urethane compound having domains of a silicone or siloxane slip additive dispersed therethrough.
An article of manufacture comprising a medical device having a protective, lubricious coating on a surface thereof, the coating provided by the method comprising:
- a) providing a coating solution having a solids content of between about 2% and about 80% by weight, the coating solution comprising an aqueous dispersion of a urethane having a solids content of between about 30% and about 50%, and a silicone or siloxane emulsion having a solids content of at least about 15%;
- b) applying the coating solution to a surface of the medical device;
- and,
- c) allowing the coating to set into a layer upon the device surface.
Dependencies are inferred from the claim text.