| 摘要 |
An endoscope apparatus includes an endoscope body and an air-/liquid-supply device connected thereto. Provided at the distal end of an insertion section of the body are an observation window and a nozzle directed toward the window. Air and liquid supply pipes extend from the nozzle, through the endoscope body. The supply device has a tank for storing water therein. The inside space of the tank is divided by a partition plate into a first chamber on the water side and a second chamber. Compressed air supplied from a first pump to the inside space is supplied to the air supply pipe through a first supply pipe, and compresses the water in the tank, thereby supplying the water to the liquid supply pipe through a second pipe. Air having a pressure higher than that of the first pump is supplied from a second pump to the second chamber. The high-pressure air is prevented from flowing into the first chamber, and is immediately supplied to the air supply pipe.
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