| abstract |
Disclosed is a hydrophilic copolymer including more than 50% by mol of a structural unit derived from a polymerizable monomer (A) from which a homopolymer having a lower critical solution temperature (LCST) is formed, 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 sulfate group (−OSO3H), a sulfurous acid group (−OSO2H), and a group of salts thereof, and a structural unit derived from a polymerizable monomer (C) having a photoreactive group. Also disclosed is a medical device including the hydrophilic copolymer. The medical device exhibits high sliding property until it reaches a target lesion, and low sliding property after reaching the target lesion. Methods of making and using the hydrophilic copolymer and medical device are also described. |