Patent ID: 8591782

Claim:
A process of producing a stent, comprising: preparing a tubular stent matrix extendable in a diametric direction, forming flexible solid polymer layers on said stent matrix to cover entire inner and outer surfaces of the stent matrix, and perforating a plurality of fine through pores in the solid polymer layers at portions only where the stent matrix does not exist, wherein said forming the solid polymer layers comprises a step of installing the stent matrix on an inner polymer layer disposed on an outer surface of a mandrel; a step of forming an outer polymer layer by impregnating the mandrel into a liquid resin material for forming the outer polymer layer and pulling up the mandrel; and a step of equalizing the thickness of the outer polymer layer by pulling up the mandrel in a vertical direction and controlling a pulling-up speed, and wherein said fine pores are formed after the polymer layers are formed.