Patent ID: 8916225

Claim:
A method for coating an inner surface of a polyvinyl chloride medical tube containing a plasticizer, the method comprising, in the recited order, the steps of: passing a solution obtained by dissolving an antithrombogenic material in a solvent comprising water and at least one kind of alcohol that dissolves the copolymer but does not dissolve the plasticizer through the inner surface of the tube; passing water through the tube; and drying the tube, wherein an antithrombogenic material is composed of a copolymer comprising methoxypolyethyleneglycol(meth)acrylate, alkyl (meth)acrylate, and silicone(meth)acrylate, the solvent comprises water, ethanol, and 1-propanol in a volume ratio of 10 to 30:20 to 40:30 to 60, and the amount of the antithrombogenic material coating the inner surface of the tube is 1 to 500 μg/cm 2 .