| 摘要 |
PROBLEM TO BE SOLVED: To provide the tip part of an endoscope for preventing an observation visual field from being obstructed by the overflow of water to the surface of an observation window even at the time of swinging a treating implement erecting base. SOLUTION: The treating tool erecting base 10 for changing the projecting direction of the tip part of a treating implement inserted to a treating implement insertion channel 9 by being swung by a remote operation forms a water passage 20 for making water pass through in a swinging direction on the treating implement erecting base 10 at this tip part of the endoscope arranged inside a groove 8 formed on a tip part body 2 adjacently to the observation window 5.
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