| 摘要 |
Catheter in the form of an elongate member with a through passage, has a proximal portion (11) of a second, flexible, radiopaque plastic material and a distal end portion (12) of a first, flexible, radiopaque plastic material with a durometer lower than the material of the proximal portion. The material of the distal end portion is homogeneous and contains by weight grater than 75% radiopaque agent. The catheter consists of a proximal tube (11) including a bas thermoplastic material consisting of a polyester elastomer, polyurethane, polyamide elastomer or a polyether block amide, and a second radiopaque agent selected from bismuth oxychloride, bismuth sub-carbonate, bismuth trioxide, barium sulphate or tungsten.
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