| abstract |
(57) [Problem] To provide a guide wire which exhibits an excellent lubricating maintenance effect and an antithrombotic property. The copolymer is obtained by copolymerizing allylamine or a salt thereof (a1) and a phosphorylcholine-like group-containing monomer (a2), and the structural unit based on a1 is 0.01 to 9 mol% and a2 Based on 91 to 99.99 mol% of constituent units, a random copolymer having a number average molecular weight of 50,000 to 5,000,000 containing these constituent units of 91.01 to 100 mol% was formed into a maleic acid or maleic acid derivative-containing polymer compound layer. A guide wire chemically bonded to the surface of the guide wire using a condensing agent. |