PROBLEM TO BE SOLVED: To provide a supersonic vibration device and a supersonic medical device with the supersonic vibration device which is small, prevents a characteristic degradation of a piezoelectric element itself and a shift of a resonance frequency, and is high output.SOLUTION: A supersonic vibration device 2 comprises: a laminated oscillator 41 which multiple piezoelectric materials 61 and multiple electrode layer 62 and 63 are laminated a flange unit 33 arranged at a halfway part of the laminated oscillator 41 and held by being fitted with members 9 and 9a of a device 1 provided with the laminated oscillator 41 and twin metal masses 44 and 45 arranged at both ends of the laminated oscillator 41.COPYRIGHT: (C)2014,JPO&INPIT【課題】 小型で圧電素子自体の特性劣化および共振周波数のシフトを抑制して高出力な超音波振動デバイスおよび超音波振動デバイスを備えた超音波医療装置の提供。【解決手段】 複数の圧電体61および複数の電極層62,63が積層された積層振動子41と、積層振動子41の中途部に配設され、積層振動子41が設置される装置1の部材9,9aと嵌合して保持されるフランジ部33と、積層振動子41の両端部に配設された一対の金属製マス44,45と、を備えた超音波振動デバイス2。【選択図】図3
