Endoscope

Abstract

Abstract PURPOSE:To perform inspection without changing the environmental conditions of a closed object of inspection by providing a discharge port to the insertion part of the endoscope in addition to a nozzle, sucking the liquid which is jetted from the nozzle through the discharge port and returning liquid which is jetted from the nozzle to the nozzle through a communicating conduit. CONSTITUTION:At the tip part 9 of the insertion part 4 of the endoscope, a nozzle member 14 provided with a nozzle 15 and a discharge port 17 above it are formed in addition to an observation window 12 and a lighting window 13, and a nozzle 23 and a discharge port 24 are provided behind them. When the insertion part 4 which is inserted into the object of inspection is guided to an observation position, pressurized liquid is sent to the nozzles 15 and 23 and also sucked and circulated from the discharge ports 17 and 24 by the same amount. Consequently, the insertion part 4 is applied with a floating force and guided to a target position. The liquid which is jetted in the object of inspection is discharged from the discharge ports, so the inside is inspected through the endoscope without changing the internal environmental conditions.

Inventors

• 👤 Yoshio Shishido
• 👤 宍戸　芳雄

Bibliographic Details