Patent ID: 11872326
Assignee: TERUMO KABUSHIKI KAISHA
Field: Medical technology (Instruments)
Classification: CPC A  C | IPC A  C

Claim 16:
17. A method for producing a medical device, the method comprising:
dissolving a hydrophilic copolymer in a first solvent to prepare a first coating liquid;
dissolving a hydrophilic polymer in a second solvent to prepare a second coating liquid;
applying the first coating liquid to a surface of a substrate layer of a medical device to form an adhesive layer on the substrate layer;
fixing the adhesive layer to the substrate layer via irradiation with ultraviolet rays, electron rays, or gamma rays;
applying the second coating liquid to the adhesive layer after the fixing of the adhesive layer to form a surface lubricious layer; and
fixing the surface lubricious layer to the substrate layer via irradiation with ultraviolet rays, electron rays, or gamma rays,
wherein the hydrophilic copolymer comprises a structural unit derived from a polymerizable monomer (A) having a sulfobetaine structure, a structural unit derived from a polymerizable monomer (B) having at least one group selected from the group consisting of a sulfonic acid group (—SO3H), a sulfuric acid group (—OSO3H), a sulfurous acid group (—OSO2H), and salts thereof, and a structural unit derived from a polymerizable monomer (C) having a photoreactive group; and
wherein the first and second solvents are each independently selected from the group consisting of water, a lower alcohol, and a mixed solvent of water and a lower alcohol.