| 摘要 |
<P>PROBLEM TO BE SOLVED: To switch between a non-spreading state in which fluid from an opening in the end of an insertion part of an endoscope is ejected without being impeded and a spreading state in which it is ejected while being spread within a predetermined range, without ejecting it in the shape of a tube and without increasing the diameter of the end of the insertion part. <P>SOLUTION: A switching member 30 is arranged at the front of the end 3. The ejection area of the fluid which is ejected from a front water conveyance port 21 is switched by selectively switching the position of a spreading part 32 with respect to the front water conveyance port 21, without increasing the diameter of the end 3. When a non-spreading part 31 of the switching member 30 is arranged so that its position may match the front water conveyance port 21, the liquid supplied to a front water conveyance channel 22 is ejected from the front water conveyance port 21 in the direction of the pipe line axis of the front water conveyance channel 22 without being spread. When a spreading part 32 is arranged in the position where it obliquely covers the front water conveyance port 21, the liquid ejected from the front water conveyance port 21 is spread when it passes through the spreading part 32 and is ejected in a wide range ahead of the end 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
