| 摘要 |
PROBLEM TO BE SOLVED: To provide an endoscope the O-ring of which deteriorated in quality by repeated uses is simply replaced with a new one. SOLUTION: A detachable coupling structural part 100 with a liquid-tight nature is mounted on this endoscope 1. The coupling part 100 is supplied with a first O-ring 81 that is press fitted within the coupling part 100 for liquid tightness when it is installed, and a second O-ring 91 for replacement, the same in type with the first O-ring 81. The second O-ring 91 is provided in the way that no substantial deformation can occur in its transverse form when the coupling part 100 is mounted on the endoscope 1. COPYRIGHT: (C)2008,JPO&INPIT
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