PROBLEM TO BE SOLVED: To form a polymer membrane on a region which is difficult to be irradiated directly with light or a region which is not irradiated directly with light, the polymer membrane having a phosphorylcholine group-containing compound covalently bound thereto.SOLUTION: The medical component comprises: a substrate having optical transparency； and a polymer membrane formed on at least a portion of inner surface of the substrate, the polymer membrane containing polymer chains formed by polymerization of a compound having a covalently bound phosphorylcholine group. The substrate includes a first region which is at least a portion of the inner surface and to which, when irradiated with light of predetermined strength from outside surface side of the substrate, the light of strength which enables formation of the polymer membrane reaches by transmission.SELECTED DRAWING: Figure 3ACOPYRIGHT: (C)2020,JPO&INPIT【課題】 光を直接照射しにくい領域又は直接照射されない領域に、ホスホリルコリン基を有する化合物が共有結合した高分子膜を形成する。【解決手段】 医療部材は、光透過性を有する基材と、前記基材の内表面の少なくとも一部に共有結合したホスホリルコリン基を有する化合物が重合した高分子鎖を含む高分子膜と、を備え、前記基材は、前記基材の外表面側から所定強度の光を照射した場合に、前記内表面の少なくとも一部であって前記高分子膜を形成することが可能な強度の光が透過して到達する第１領域を含む。【選択図】図３Ａ
