| 摘要 |
PROBLEM TO BE SOLVED: To provide a clamp plug of an endoscope, miniaturized, hardly becoming filthy, durable, and preventing the erroneous application in the reverse direction. SOLUTION: A circumferential groove 20 is formed on the outer surface of the barrel-shaped member 11. The shape of the section of the circumferential groove 20 is narrow and long in the direction parallel to the axial line of the barrel-shaped member 11. A ring-shaped part 23 is formed on the other end of a belt-like member 22 to be fit into the circumferential groove 20 detachably.
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