| abstract |
An endoscope water supply channel that allows a person undergoing an endoscopic examination to easily undergo an examination even if an observation window washing duct and a subject washing duct are provided side by side. To provide. A single water supply conduit 11 communicating with both an observation window cleaning conduit 14 and a subject cleaning conduit 15 is inserted and disposed in the insertion portion 1, and the observation window is opened from the water supply conduit 11. A branching portion 12 that branches into a cleaning conduit 14 and a subject cleaning conduit 15 is disposed near the distal end of the insertion portion 1, and is normally closed to the subject cleaning conduit 15 side from the branching portion 12 and is a water supply pipe. A pressure release valve 10 that opens when water is supplied from the passage 11 at a high pressure exceeding a certain pressure is disposed. [Selection] Figure 1 |