PROBLEM TO BE SOLVED: To provide a space-saving tubular insertion system which facilitates the detection of the operation amount of a bending operation wire.SOLUTION: An endoscope system 10 includes: an insertion part having a bendable bending part an operation part 30 connected to the proximal end of the insertion part a bending operation mechanism 39 performing the bending operation of the bending part a bending operation amount detecting part 61 detecting the operation amount of the bending operation mechanism and a bending operation amount calculating part 65 calculating the bent shape of the bending part, based on the detection result of the bending operation amount detecting part 61. The bending operation amount detecting part 61 includes two bending operation amount detecting sensors 63LR and 63UD for detecting the bending operation amount of the bending operation mechanism 39. Each one of the respective bending operation amount detecting sensors 63LR and 63UD includes: a light emission part 63a for irradiating movable parts of the bending operation mechanism 39 with light and a light reception part 63b for receiving the light from the movable parts and acquiring the images of the movable parts, processes the images of the movable parts, and detects the movement amounts of the movable parts.COPYRIGHT: (C)2013,JPO&INPIT【課題】湾曲操作ワイヤの操作量を簡便に検出できる省スペースな管状挿入システムを提供する。【解決手段】内視鏡システム10は、湾曲可能な湾曲部を有する挿入部と、挿入部の基端部と連結された操作部30と、湾曲部を湾曲操作する湾曲操作機構39と、湾曲操作機構の操作量を検出する湾曲操作量検出部61と、湾曲操作量検出部61の検出結果に基づいて湾曲部の湾曲形状を算出する湾曲操作量算出部65を有している。湾曲操作量検出部61は、湾曲操作機構39の湾曲操作量を検出するために2つの湾曲操作量検出センサ63LR,63UDを有している。各湾曲操作量検出センサ63LR,63UDは、湾曲操作機構39の可動部に光を照射する発光部63aと、可動部からの光を受光して可動部の像を取得する受光部63bを有し、可動部の像を処理して可動部の動き量を検出する。【選択図】図2
