PROBLEM TO BE SOLVED: To provide a battery-powered medical electronic device having high waterproof property and easily assembled. A connector having a connector mounted on a living body mounting portion that is mounted on a subject to acquire biological information and a housing portion that is opened on one surface side and that houses a battery serving as a drive source. Has a device main body in which the living body mounting portion is connected to a terminal portion in the housing portion by being detachably attached to the housing portion so as to close the housing portion, and the connector has a structure when attached to the opening. A ring-shaped packing portion that is elastically deformed and comes into water-tight contact with the peripheral portion of the opening. [Selection diagram] Fig. 9【課題】電池駆動が可能な医療用電子機器において、防水性が高く組立も容易に行うことができる。【解決手段】被検者に装着されて生体情報を取得する生体装着部に設けられたコネクタと、一面側で開口して設けられ、駆動源となる電池を収容する収容部を有し、コネクタが、収容部を閉塞するように開口に着脱自在に取り付けられることにより、収容部内の端子部に生体装着部が接続される機器本体と、を有し、コネクタは、開口に取り付けられた際に、弾性変形して前記開口の周縁部に水密的に密着する環状のパッキング部を有する。【選択図】図９
