Drug-eluting stent with multi-layer coatings

摘要

The invention relates to a drug eluting stent and a method for making the stent. The stent comprises a stent body and coats covering on the stent body, it is characterized in that: 2-4 coats are provided on the surface of the stent body, wherein at least two coats are drug coats. The drug coats comprise 0.5-99% polymer by weight, 0-10% additive by weight and 0.5-99% active ingredient by weight. A primer layer is provided between the drug coats and the stent body. A compact control-releasing layer is also coated on the surface of the drug coats.