| 摘要 |
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. |
