Patent ID: 6425535
Filing Date: 2002-07-30
Classification: A61B

Abstract:
A fluid supplying apparatus for an endoscope, which comprises:an observation window provided at a distal end portion of an insertion portion; a nozzle for spraying at least a cleaning liquid toward said observation window; a first fluid supplying passage connected to said nozzle; a jet spray aperture formed to said distal end portion for spraying fluid in forward direction of said insertion portion; a second fluid supplying passage connected to said jet spray aperture; a control valve provided within a operating unit provided connected to said insertion portion, to which said first fluid supplying passage is connected; a casing for dividing said first fluid supplying passage into a nozzle side passage and a valve side passage, and to which said second fluid supplying passage is connected; a pump connector, provided within said casing, for detachably mounting a fluid pumping means and being formed a supplying passage for flowing fluid from said fluid pumping means; a switching passage provided to said pump connector, said switching passage being capable of switching between a first position wherein said nozzle side passage is connected to a valve side passage of said first fluid supplying passage and said supplying passage is cut off from said second fluid supplying passage, and a second position wherein said nozzle side passage is cut off from said valve side passage of said first fluid supplying passage and said supplying passage is connected to said second fluid supplying passage; and a check valve provided to said supplying passage for preventing flow from said switching passage side to said supplying passage side.