| 摘要 |
<p>PURPOSE: To obtain an endoscope valve system without pollution by using a one-way sheath with a casing, plural channels accompanied with this casing, and plural elastic tubes extending from each channel. CONSTITUTION: An endoscope 10 uses a one-way sheath 18 with an outer protective casing 20 with a window at its end, and at least more than one channels 22 fittable to glooves 24 formed at an inserting tube 14 of the endoscope. A control handle 16 contains a manual operation type valve 40 for sucking channel and a single manual operation type valve 42 for both water and air channels, and the valves 40, 42 are operated by pushing each valve operating button in a control handle 16. And, an operation mechanism of an inhaling valve 40 and an air/water valve 42 does not come into contact with inner part of the sucking channel and the air and water channels. Thereby, the valves 40, 42 are not polluted and need also not to be washed.</p> |
