| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an insertion aid for an endoscope provided with a hand operation unit for switching a tube connected to a fluid conduit in a sheath insertion portion between an open state and a closed state by pressing or releasing the tube, wherein the insertion aid can prevent damage of the hand operation unit when not in use while preventing a defect of the tube of being easy to get crushed and also which can suitably perform sterilization. <P>SOLUTION: A handle unit 30 of the insertion aid includes an operating mechanism for opening and closing the tubes connected to an air pipe line and a water pipe line of the sheath insertion portion 14 by pressing them. Specifically, the handle unit includes stoppers 90 and 92 biased in a pressing position to press the tubes, and a lever 32 for moving the stoppers 90 and 92 to a non-pressing position so as not to press the tubes. The lever 32 has through-holes 112 and 114 laterally penetrating. When a lock pin 110 is inserted into the through-holes, the lever 32 is locked in a predetermined rotational position, thereby holding the stoppers 90 and 92 in the non-pressing position. <P>COPYRIGHT: (C)2013,JPO&INPIT |
