Coated medical device and method for manufacturing the same
First Claim
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1. A system for coating a stent having a tubular portion with an outer surface, wherein the system comprises:
- a coating material source containing a coating material comprising a solvent and a biologically active material;
a first roller having a surface;
a doctor blade in proximity to the first roller surface positioned to remove excess coating material from the first roller surface; and
a second roller having a surface, wherein;
the first roller is situated relative to the coating material source so that the coating material in the coating material source is transferred to the first roller surface;
the first roller and second roller are situated relative to each other so that the first roller transfers the coating material transferred to the first roller surface to the second roller surface, andthe second roller is situated relative to the tubular portion so that the second roller transfers the coating material transferred to the second roller surface to the outer surface of the tubular portion.
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Abstract
The medical device of the invention comprises a surface comprising at least one outermost portion and a plurality of depressions. The depressions occupy at least about 80% of the surface area of the surface. The depressions contain a coating material that preferably comprises a biologically active material and/or polymer, and the outermost portion is substantially free of any coating material. The invention is also directed to a method for manufacturing a medical device. The method comprises applying a coating material to the surface of the medical device by using at least one roller.
38 Citations
16 Claims
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1. A system for coating a stent having a tubular portion with an outer surface, wherein the system comprises:
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a coating material source containing a coating material comprising a solvent and a biologically active material; a first roller having a surface; a doctor blade in proximity to the first roller surface positioned to remove excess coating material from the first roller surface; and a second roller having a surface, wherein; the first roller is situated relative to the coating material source so that the coating material in the coating material source is transferred to the first roller surface; the first roller and second roller are situated relative to each other so that the first roller transfers the coating material transferred to the first roller surface to the second roller surface, and the second roller is situated relative to the tubular portion so that the second roller transfers the coating material transferred to the second roller surface to the outer surface of the tubular portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification