OBSERVATION WINDOW CLEANING DEVICE FOR ENDOSCOPE

摘要

PROBLEM TO BE SOLVED: To make it possible to properly set supplying pressure and supplying amount per unit time of a cleaning liquid and supplying rate of compressed air to quickly and securely clean an observation window in cleaning the observation window. SOLUTION: A gas sending path 15 and a liquid sending path 17 extended from the proximal end side of an inserting section 2 to the position of the proximal end face of a distal end portion body 8 at a distal end hard section 2c as supplying tubes 20 and 21 respectively are communicated to a fluid supplying chamber 19 through connecting pipes 24 and 25 inserted into communicating ports 22 and 23 formed at the distal end portion body 8, and the fluid supplying chamber 19 is communicated to a spray nozzle 10. The communicating port 22 constituting the gas sending path 15 has a step structure having a forward end having a small diameter and a base end having a large diameter, and the hole diameter size of the small diameter portion is smaller than the inner diameter size of the connecting pipe 25 to form a reduced path 22b. COPYRIGHT: (C)2005,JPO&NCIPI