| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope with a jacket sheath capable of surely engaging / disengaging a falling prevention mechanism for controlling the falling of the tip part of a flexible insertion part from the inside of the tip part of the jacket sheath without damaging a member. SOLUTION: The tip part 22 of the jacket sheath 20 is constituted so as to be rotated in a prescribed range around an axis to the tip part 13 of the flexible insertion part 11. Also, a channel deformation space 19 for a part near the tip of a channel tube 23 to be turned while being elastically deformed following the rotating operation is provided. By rotating the tip part 22 of the jacket sheath 20 in the prescribed range around the axis to the tip part 13 of the flexible insertion part 11, the falling prevention mechanisms 18 and 28 are engaged and disengaged. COPYRIGHT: (C)2004,JPO
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