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Abstract

A stent having an expandable stent body with a generally tubular shape comprises a series of support surfaces upon which a polymer stent coating has been applied. One or more bioactive agents are disposed within the coating. The coating is applied by evaporating solvent from a solution which has been applied to the stent surfaces from a pressurized reservoir or positive displacement pumping means attached to a delivery tube. The delivery tube's longitudinal or X-Y-Z position along the body of the stent, the rotation of the stent along its longitudinal axis, and the delivery rate are coordinated by a programmable controller to deposit precise and repeatable amounts of polymer and agent on the stent surfaces. Preferably, an anti-restenosis agent consisting of a potent analogue or derivative of tranilast are disposed in a bioerodable stent coating, comprising poly(lactic acid), or, alternatively, in a biodurable stent coating comprising EVA.

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First Claim