Bioactive agent release coating
First Claim
1. A method of preparing a medical device coated with a composition, the method comprising the steps of providing a composition comprising a bioactive agent in combination with a plurality of hydrophobic polymers, including a first polymer component comprising at least one poly(alkyl)(meth)acrylate having alkyl chain lengths from 2 to 8 carbons and a second polymer component comprising poly(ethylene-vo-vinyl acetate) having vinyl acetate concentrations of between about 10% and about 50% by weight, in a manner that permits the coated surface to release the bioactive agent over time when implanted in vivo, and applying the composition to the medical device.
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Accused Products
Abstract
A coating composition for use in coating implantable medical devices to improve their ability to release bioactive agents in vivo. The coating composition is particularly adapted for use with devices that undergo significant flexion and/or expansion in the course of their delivery and/or use, such as stents and catheters. The composition includes the bioactive agent in combination with a mixture of a first polymer component such as poly(butyl methacrylate) and a second polymer component such as poly(ethylene-co-vinyl acetate).
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Citations
32 Claims
- 1. A method of preparing a medical device coated with a composition, the method comprising the steps of providing a composition comprising a bioactive agent in combination with a plurality of hydrophobic polymers, including a first polymer component comprising at least one poly(alkyl)(meth)acrylate having alkyl chain lengths from 2 to 8 carbons and a second polymer component comprising poly(ethylene-vo-vinyl acetate) having vinyl acetate concentrations of between about 10% and about 50% by weight, in a manner that permits the coated surface to release the bioactive agent over time when implanted in vivo, and applying the composition to the medical device.
Specification