Abstract: An ultrasonic probe has a plurality of ultrasonic transducer elements arranged in a row. A plurality of signal electrodes are provided at one side of the transducer elements. An earth electrode is provided at the other side of the transducer elements. Each of a plurality of signal conductive members is connected to a corresponding signal electrode. An earth conductive member is connected to the earth electrode. The signal conductive members are located close enough to the earth conductive member to sufficiently reduce a mutual inductance generated between said signal conductive members. Therefore, an amount of crosstalk generated between the signal conductive members is reduced.

Abstract: An ultrasonic probe device has an ultrasonic transducer unit including a plurality of ultrasonic transducer elements electrically isolated from one another. A backing member for mechanically damping the ultrasonic transducer unit is arranged on the ultrasonic transducer unit. A plurality of signal lines is connected to the transducer elements, respectively, and extends on the backing member. The backing member is molded from a composition containing rubber material and a metal oxide which is unreducible by the heat applied during a molding process of the backing member.