| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope of excellent workability in cleaning and assembling an auxiliary water supply tube part without enlarging the diameter of an auxiliary water supply flow line and the size of an auxiliary water supply inlet projection. SOLUTION: This endoscope is provided with an insertion part; a connection cylinder part 30 connected to the insertion part; the auxiliary water supply inlet projection 21 of hollow cylinder shape projecting outward from the connection cylinder part to allow water to flow through the inside and outside of the connection cylinder part; the auxiliary water supply flow line 61 for allowing the auxiliary water supply inlet projection to communicate with an auxiliary water supply outlet part opened to the insertion part. In this case, the auxiliary water supply inlet projection is gradually inclined in a separating direction from the insertion part toward the projecting end part from the base part on the connection cylinder part side in relation to the plane direction orthogonal to the connection cylinder part.
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