| abstract |
The present invention provides a medical instrument exhibiting excellent lubricity. This medical instrument comprises: a substrate layer; an adhesive layer which is formed on at least a part of the substrate layer and which comprises a hydrophilic copolymer (1) containing a structural unit derived from a polymerizable monomer (A) having a sulfobetaine structure, 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 sulfuric acid group (-OSO3H), a sulfurous acid group (-OSO2H) and salts thereof, and a structural unit derived from a polymerizable monomer (C) having a photoreactive group; and a surface lubrication layer which is formed on at least a part of the adhesive layer and which comprises hyaluronic acid or a salt thereof and a hydrophilic copolymer (2) containing a structural unit derived from a polymerizable monomer (A') having a sulfobetaine structure, 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 sulfuric acid group (-OSO3H), a sulfurous acid group (-OSO2H) and salts thereof, and a structural unit derived from a polymerizable monomer (C') having a photoreactive group. |