A highly safe medical device which exhibits long-lasting low surface friction in a body fluid or in an aqueous medium is provided. Also provided is a method for producing such medical device wherein substantially no limitation is imposed on the type of the substrate used, and the hydrophilic high molecular weight compound or the water-soluble or water-swellable high molecular weight compound responsible for the surface lubricity can be readily coated on the surface. In the present invention, a hydrophilic high molecular weight compound having at least one carbonyl group or hydrazine residue in the molecule and a cross-linking agent having at least two hydrazine residues or carbonyl groups in the molecule are reacted to thereby form a surface lubrication layer comprising the reaction product. In another embodiment, an interpenetrating network is formed between the reaction product of a compound having at least one carbonyl group or hydrazine residue in the molecule and a cross-linking agent, and a water-soluble or water-swellable high molecular weight compound to thereby form a surface lubrication layer.
本发明提供了一种高度安全的医疗器械,它在体液或
水介质中表现出持久的低表面摩擦力。本发明还提供了一种生产这种医疗器械的方法,该方法对所用基材的类型基本没有限制,而且亲
水性高分子量化合物或具有表面润滑性的
水溶性或
水溶性高分子量化合物可以很容易地涂覆在基材表面。在本发明中,分子中至少有一个羰基或
肼残基的亲
水性高分子量化合物和分子中至少有两个
肼残基或羰基的
交联剂发生反应,从而形成由反应产物组成的表面润滑层。在另一个实施方案中,在分子中至少有一个羰基或
肼残基的化合物和
交联剂的反应产物与
水溶性或
水溶性高分子量化合物之间形成互穿网络,从而形成表面润滑层。