Patent ID: 8622908

Claim:
A pressing member that is detachable mounted to an ultrasonic probe to press against a subject for obtaining an elastic image of said subject, comprising: a first member for transferring pressing force in a direction parallel to a pressing direction to the subject; and a second member for transferring pressing force in a direction different from the pressing direction, wherein: the second member is formed so as to extend to the edge portion of the first member, the direction different from the pressing direction is a direction facing the center portion side of the first member so that the pressing force is transferred in a direction intersecting with the pressing direction, the first member has a first face vertical to the pressing direction, and the second member has a second face vertical to the direction different from the pressing direction, at least one of the first face and the second face has a smooth varying concave shape at at least a part thereof, and the first face and the second face are integral with each other to form a smoothly varying concave shape.