Patent ID: 8618032

Claim:
A medical apparatus, comprising a substrate surface that is coated with a coating formed from a block copolymer comprising a moiety having a reactive group which is an epoxy group; and a moiety for developing lubricity comprising a hydrophilic monomer or a repetition of said monomer, wherein a substance for shortening relaxation time of a nuclear species capable of being detected by magnetic resonance is chemically bound to an epoxy group of the block copolymer, wherein the block copolymer is directly attached to the substrate surface of the medical apparatus, wherein the molar ratio of the moiety having a reactive group to the moiety for developing lubricity is 1:3 to 1:19, wherein said copolymer, when wetted, develops surface lubricity and MRI visibility, wherein either one of said moieties and said substance for shortening said relaxation time are covalently bound to each other either directly or through a linker molecule, and wherein said linker molecule is at least one selected from the group consisting of a diamine, amino-alcohol, dialkylenetriamine, aminocarboxylic acid, lactam, diol, hydroxycarboxylic acid, dicarboxylic acid, diisocyanate, diisothiocyanate, aminoisocyanate, aminoisothiocyanate, hydroxylisocyanate, hydroxylisothiocyanate, carboxylisocyanate, and carboxylisothiocyanate.