PROBLEM TO BE SOLVED: To provide a small ultrasonic vibrating device improved in space saving in the device, and an ultrasonic medical apparatus.SOLUTION: An ultrasonic vibrating device and an ultrasonic medical apparatus include a laminated vibrator 41 formed by laminating a plurality of piezoelectric material plates each having electrodes formed on front and rear faces, and at least two through holes so that the front face electrode is electrically connected to the inner surface of one through hole and that the rear face electrode is electrically connected to the inner surface of the other through hole, the piezoelectric material plates being laminated while alternately reversing the front faces and the rear faces in the respectively communicating state of the two through holes and two insertion screws 50 inserted through the two through holes and fixed to cause the mutual contact of the electrodes on the front faces or the electrodes on the rear faces of the respective laminated piezoelectric material plates, and electrically connected to a power source to serve as energization paths to the electrodes.COPYRIGHT: (C)2013,JPO&INPIT【課題】装置内の省スペース化を向上させる小型な超音波振動デバイスおよび超音波医療装置を提供する。【解決手段】表裏面に形成された電極よび少なくとも2つの貫通孔を有し、表面の電極と一方の貫通孔内面とは電気的に接続し、裏面の電極と他方の貫通孔内面とは電気的に接続した複数の圧電材料板を、2つの貫通孔がそれぞれ連通し且つ表面と裏面とを交互に反転させながら積層した積層振動子41と、2つの貫通孔に挿通し、積層された各圧電材料板の表面の電極同士または裏面の電極同士が接触するように固定すると共に、電源と電気的に接続されて電極への通電経路となる2つの挿通ネジ50と、を具備する超音波振動デバイスおよび超音波医療装置。【選択図】図4
