| abstract |
[PROBLEMS] To provide a hydrophilic polymer that exhibits lubricity when wet, or to have high blood compatibility (biocompatibility) that does not impair the function as a catheter tube even when contacted with blood or biological tissue. Providing a catheter tube that is tightly coated with molecules and excellent in lubricity or blood compatibility (biocompatibility) in a body cavity. A catheter tube 1 comprising an outer layer 3 and an inner layer 2 is coated (coated) with a hydrophilic polymer or a functional polymer excellent in blood compatibility (biocompatibility) on the outer surface of the outer layer. Furthermore, the outer layer forming material has higher adhesion to the polymer than the inner layer forming material, and one of the outer layer and inner layer forming material is a material mainly composed of a thermoplastic elastomer, and the other is A catheter tube comprising a material mainly composed of an inelastic material having compatibility with the thermoplastic elastomer. [Selection] Figure 1 |