| 摘要 |
PURPOSE:To carry out insertion operation safely and in simple manner without carrying out the X-ray scanning and lighten the pain of an inspected body in insertion operation in large intestine inspection by installing a deflection detecting means for detecting the deflection state of an insertion part. CONSTITUTION:A plurality of extension sensors 15 as deflection detection means for detecting the deflection state of an insertion part 6 are installed on the soft part 9 of an endoscope 3. This sensor is a sheet strip shaped element whose electric resistance value varies in proportion to the extension quantity, when an extension stress is applied. The soft part 9 is divided into a plurality of segments 9A, 9B, 9C, 9D, 9E,..., and in each segment, four extension sensors 15 are installed at the upper, lower, left and right places on a scope shaft. The detection information is sent as electric signal into a shape construction means 16 in an information processing part 4, and the shape of the insertion part 6 is constructed on the basis of this data. In the insertion operation of the insertion part 6, insertion operation can be carried out safely, always observing the constructed shape, and the pain in insertion can be lightened.
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