| 摘要 |
PROBLEM TO BE SOLVED: To provide a water feeding device which never requires to switch a special water feeding passage and a water feeding passage using a treatment device insertion channel and prevents residual water from flowing after halting feeding of water. SOLUTION: The water feeding device has a first water feeding tube 15b connected to a water jet tube 15a provided in an endoscope, a second water feeding tube 18 guided inside a body to be observed through the treatment device insertion channel 17a to supply a liquid, and a water feeding pump part 30 for feeding the liquid in a tank 34, and is equipped with a switching valve 36 which selectively feeds the liquid from the water feeding pump part 30 to either the first feeding tube 15b or the second feeding tube 18. Instead of placing the switching valve 36, pumps for the first and second water feeding passages are provided at the water feeding pump part, and two pumps are switched. Moreover, a connecting tube on the output side of feeding water of the water feeding pump 30 and the first water feeding tube 15b are made of a hard synthetic resin. COPYRIGHT: (C)2007,JPO&INPIT
|
