To improve reliability of a device and to reduce discomfort given to a subject.SOLUTION: According to one embodiment of the current invention, in hemodynamometer 1 which is worn by the left wrist 90 of a user and used, a pressing cuff 21 as a pressing member is arranged in a central part in a width direction (Y direction) on an inner peripheral surface of a belt-like body 23 configuring a base body of a band 20. At the same time, at a position between the inner peripheral surface of the belt-like body 23 and the pressing cuff 21, a common circuit board in a strip-like shape is arranged in the width direction (the Y direction) of the belt-like body 23. At a part exposed from both side parts of the pressing cuff 21 of the common circuit board, antenna substrates 41, 42 are formed, and at a position between the pressing cuff 21 of the common circuit board and the belt-like body 232, a control circuit board 43 is formed.SELECTED DRAWING: Figure 5【課題】装置の信頼性の向上を図ると共に被検者に与える不快感の軽減を図る。【解決手段】この発明の一実施形態は、ユーザの左手首９０に装着して使用される血圧計１において、バンド２０の基体を構成する帯状体２３の内周面に、その幅方向（Ｙ方向）の中央部に押圧部材としての押圧カフ２１を配置する。またそれと共に、上記帯状体２３の内周面と上記押圧カフ２１とにより挟まれる位置に、上記帯状体２３の幅方向（Ｙ方向）に短冊状をなす共通回路基板を配置し、この共通回路基板の上記押圧カフ２１の両側部から露出する部位にそれぞれアンテナ基板４１，４２を形成し、かつ上記共通回路基板の上記押圧カフ２１と帯状体２３２との間に挟まれる位置に制御回路基板４３を形成する。【選択図】図５
