Coatings with crystallized active agent(s) and methods

Abstract

Coatings with crystallized active agent(s) and related methods are disclosed. One method includes selecting a solvent and a polymer, selecting a concentration of an active agent of at least a certain amount of saturation, forming a coating composition having the selected concentration of the active agent, and applying the coating composition to the medical device. Also disclosed is an elution control coating which includes an active agent that is at least about 80% crystallized within one week of being disposed on a medical device. One method enhances the formation of active agent crystals within a coating layer by adjusting the concentration of the active agent in the coating solution to reach some percentage of the active agent saturation point. Another method includes increasing the rate of active agent nucleation within the coating.

Dependencies are inferred from the claim text.