Coatings for drug delivery devices comprising hydrolitically stable adducts of poly(ethylene-co-vinyl alcohol) and methods for fabricating the same
First Claim
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1. A medical article comprising an implantable substrate having a coating deposited on at least a portion of the substrate, the coating comprising a polymer having the formula:
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Abstract
A polymer coating for medical devices based on a derivatized poly(ethylene-co-vinyl alcohol) is disclosed. A variety of polymers are described to make coatings for medical devices, particularly, for drug delivery stents. The polymers include poly(ethylene-co-vinyl alcohol) modified by alkylation, esterification, and introduction of fluorinated alkyl fragments, polysiloxane fragments and poly(ethylene glycol) fragments into the macromolecular chains of poly(ethylene-co-vinyl alcohol).
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5 Claims
- 1. A medical article comprising an implantable substrate having a coating deposited on at least a portion of the substrate, the coating comprising a polymer having the formula:
Specification