As 3 dimensional position detection means of the ultrasonic probe installation and removal in the ultrasonic probe are made unrestrictedly installation possible, storing position detection means in the ultrasonic probe, it offers the ultrasonic diagnostic device which uses the ultrasonic probe and that kind of ultrasonic probe which do not have the times when operativity of the ultrasonic probe decreases. Because of that, the ultrasonic probe of this invention, the sending and receiving wave are done the grip section which is concatenated to the probe head section and the probe head section which lock the vibrator section and the vibrator section which and, has the ultra wave for the suffering inspection body, the grip section removes the position detection means in order to detect the information of 3 dimensional position of the ultrasonic probe and possessing the channel in order possibly to store, becomes.< Choice figure > Drawing 1超音波探触子の3次元位置検出手段を着脱自在に超音波探触子に装着可能にすると共に、超音波探触子に位置検出手段を収容しても超音波探触子の操作性が低下することのない超音波探触子及びそのような超音波探触子を用いた超音波診断装置を提供する。そのために、本発明の超音波探触子は、被検体に超音波を送受波する振動子部と、振動子部を固定する探触子ヘッド部と、探触子ヘッド部に連結するグリップ部と、を備え、グリップ部は、超音波探触子の3次元位置情報を検出するための位置検出手段を取り外し可能に収容するための溝を有して成る。【選択図】 図1