PROBLEM TO BE SOLVED: To freely move a position sensor incorporating a coil during endoscope work.SOLUTION: In a position sensor 70 incorporating a coil 76 in a sensor body 71 having rigidity, a current signal generated in the coil 76 by detecting a magnetic field is sent to an NCU (endoscope shape detection device ) 50 through an enamel wire 73B connected to the coil 76 and an electric wire 73 comprising a vinyl covering electric wire 73A. A connection portion 74 between the enamel wire 73B and vinyl covering electric wire 73A is arranged in the sensor body 71.SELECTED DRAWING: Figure 2【課題】内視鏡作業中、コイルを内蔵した位置センサを自在に動かせるようにする。【解決手段】コイル７６を硬性のセンサ本体７１に内蔵した位置センサ７０において、コイル７６と接続するエナメル線７３Ｂと、ビニル被覆電線７３Ａによって構成される電線７３を通じて、磁界検知によりコイル７６に生じる電流信号をＮＣＵ（内視鏡形状検出装置）５０に送る。エナメル線７３Ｂとビニル被覆電線７３Ａとの接続部分７４を、センサ本体７１内に設ける。【選択図】図２
