Ordered Coatings for Drug Eluting Stents and Medical Devices

摘要

A system for treating a vascular condition comprises a therapeutic agent eluting stent having a layered coating on the stent framework. The coating releases therapeutically effective amounts of one or more therapeutic agents in and ordered sequence and over a selected time period. Another embodiment of the invention includes a method of treating a vascular condition by placing a stent having a layered coating at a treatment site and delivering a therapeutically effective amount of one or more therapeutic agents at the treatment site in an ordered sequence and over a selected time period.