| 摘要 |
PROBLEM TO BE SOLVED: To provide an introduction device which enhances maintainability.SOLUTION: An introduction device includes: an insertion part 21 which is provided with a gear part 34; a rotor 24 which is provided with a through-hole 25 for exposing a part of the gear part 34, which assumes a cylindrical shape surrounding the insertion part 21 in such a manner as to cover the gear part 34, and which can be rotated around the insertion part 21 by being engaged with the gear part 34; an elastic member 26 for closing the through-hole 25; and a holding unit 27 for holding the elastic member 26 with respect to the rotor 24. |
