| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent problem occurrence due to misoperation of a vent valve capable of switching between a cutoff state and a communication state between the internal space and external space of an endoscope.SOLUTION: In a state that the outer surface of an endoscope is dry, an actuator 53 of a lock mechanism part 51 is not carried with a current not to disturb downward movement of a valve element 31 of a pressure recovery valve unit 30. On the other hand, when the endoscope is immersed in a liquid such as water or a liquid medicine by water leak inspection, washing/disinfection or the like, a liquid component of the outer surface of the endoscope is detected in a liquid detection part 55, the actuator 53 of the lock mechanism part 51 is carried with a current and is driven by a drive control part 60, a lock plate 52 slides, an opening hole 52a of the lock plate 52 comes off a lower end position of the valve element 31, a non-opening portion is positioned in the lower end of the valve element 31, and the downward movement of the valve element 31 is blocked. Thus, ventilation between the inside and the outside of the endoscope caused by misoperation of the pressure recovery valve unit 30 is blocked to prevent penetration of the liquid into the endoscope.</p> |
