PROBLEM TO BE SOLVED: To provide an ultrasonic probe capable of reliably performing transmission/reception of an electric signal with an ultrasonic vibrator while rotating the ultrasonic vibrator.SOLUTION: An ultrasonic probe is provided with a support stand, a rotation body that rotates in a state of being supported by the support stand, an ultrasonic vibrator disposed on an outer peripheral surface of the rotation body, and a rotary electric connector disposed so as to pivotally support the rotation body by the support stand for performing transmission/reception of an electric signal with the ultrasonic vibrator. The rotary electric connector includes a rotary electrode connected to the rotation body, which rotates together with the rotation body, a fixed electrode connected to the support stand so as to face the rotary electrode, which forms a ring-shaped guide groove around a rotation axis in a region facing the rotary electrode, and a rotary contactor disposed in the guide groove, which rolls along the guide groove while coming in contact with both the rotary electrode and the fixed electrode according to rotation of the rotary electrode.SELECTED DRAWING: Figure 4【課題】超音波振動子を回動させつつ、当該超音波振動子との電気信号の授受をより確実に行うことを可能とする超音波プローブを提供すること。【解決手段】支持台と、前記支持台に支持された状態で回動する回転体と、前記回転体の外周面に配設された超音波振動子と、前記支持台にて前記回転体を軸支するように配設され、前記超音波振動子と電気信号の授受を行う回転電気コネクターと、を備え、前記回転電気コネクターは、前記回転体に接合され、前記回転体と共に回動する回転電極と、前記回転電極と対向するように前記支持台に接合され、前記回転電極と対向する領域に回転軸回りのリング状の案内溝を形成する固定電極と、前記案内溝内に配設され、前記回転電極の回動に応じて、前記回転電極及び前記固定電極の両方と接触しながら前記案内溝に沿って転動する回転接触子と、を有する、超音波プローブ。【選択図】図４
