| 摘要 |
A long member 2 is covered with one-side coat member 3 and an other-side coat member 4. The one-side coat member 3 is fixed to the long member 2 by a one-side fixing member 15. The other-side coat member 4 is fixed to the long member by an other-side fixing member 20. The inner peripheral face of the one-side fixing member 15 forms a tapered inner face part for introducing body fluid between the one-side coat member 3 and the long member 2. An insertion guiding member 5 is mounted to the tip end part in an insertion direction of the long member 2. A middle part in the insertion direction of the insertion guiding member 5 has a diameter larger than the base end part thereof.
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