| 摘要 |
The antithrombotic medical material of the present invention is a medical material having, on the surface, a coating comprising graft copolymer in which monomer containing a quaternary ammonium group and hydrophilic monomer are grafted to a hydrophobic polymer, and an anticoagulant such as heparin is fixed to a depth of at least 45% from the coating surface and, furthermore, the film thickness in which anticoagulant has been fixed is at least 3 m. The antithrombotic medical material of this invention provides an antithrombotic medical material which is outstanding in its antithrombotic character and has a fixed product quality, in particular discoloration of the coating does not occur.
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