JPS6466612A - Endoscope - Google Patents

Abstract

PURPOSE:To facilitate the insertion and the extraction of an insert part and to facilitate and make sure a bowing operation by providing the insert part with the blowout part of fluid and enabling the change of the blowout direction of the fluid blowing out of the blowout part by means of an adjustment means. CONSTITUTION:When an enodscope is inserted into a pipe, etc., of a kind of plant, a wind direction controlling valve 13 is inclined to the base side of the insert part 2 by pulling an operation wire 15. When a switch 12 is turned on so as to move an air blowing pump in a light source device 5, high pressure air is blown out of a blowout hole 9 in the direction of an arrow A through a supplying channel 11 and reaction force caused by the blowout operates in the proceeding direction of the insert part 2, whereby the insert part 2 can be easily inserted into the pipe. When the insert part 2 is bowed in a state where it is inserted into up to a certain position, the high pressure air blown out of the blowout hole 9 is adjusted to be blown out almost perpendicularly to the axis of the insert part 2. The insert part 2 is bowed by the reaction force of the blowout of the high pressure air.