PROBLEM TO BE SOLVED: To provide a medical instrument etc. by a simple constitution and prevent operations from being complicated.SOLUTION: The measuring apparatus 101 is provided with a main body 2 in which a through-hole is formed, and a linear body 1 is inserted in the through-hole. When a compressive force P acts on the linear body 1, the linear body 1 is curved in a prescribed direction in a wide part 6 of the through-hole. The measuring apparatus 101 is provided with a rotation sensor related to a rotator part 7 for detecting the amount of passage of the linear body 1 on the entrance side of the through-hole a rotation sensor related to a rotator part 8 for detecting the amount of passage of the linear body 1 on the exit side of the through-hole and a compressive force conversion part for converting the difference in the amount of passage of the linear body 1 detected by both rotation sensors into a compressive force.COPYRIGHT: (C)2009,JPO&INPIT【課題】医療器具等を簡易な構成で実現し、かつ操作の複雑化を防ぐ。【解決手段】計測装置101は、線状体1が貫通する貫通孔が形成される本体2を備え、線状体1に圧縮力Pが作用するとき、貫通孔の幅広部6において線状体1が所定の方向へ湾曲し、さらに、貫通孔の入口側における、線状体1の通過量を検出する回転体部7に関連の回転センサと、貫通孔の出口側における、線状体1の通過量を検出する回転体部8に関連の回転センサと、両方の回転センサにより検出した線状体1の通過量の差を、圧縮力に変換する圧縮力変換部と、を備える。【選択図】図4
