abstract |
The present invention provides a medical instrument exhibiting excellent lubricity. A medical instrument according to the present invention comprises: a substrate layer; and a surface lubricating layer which includes a polymer formed in at least a part of the substrate layer and containing a constitutional unit derived from acrylamide, and includes a hydrophilic copolymer containing a constitutional unit derived from a polymerizable monomer (A) having a sulfobetaine structure, a constitutional 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 groups of salts thereof, and a constitutional unit derived from a polymerizable monomer (C) having a photoreactive group. |