Ultrasonic drive device

Abstract

An ultrasonic drive device comprises: a vibrator generating ultrasonic waves; a flexible circuit board electrically connected to the vibrator; and a control unit connected to the flexible circuit board to supply current to the vibrator and controlling the driving of the vibrator, wherein the control unit generates ultrasonic pulses of a first waveform having a first pulse repetition frequency of 50-200 mW/cm2 intensity, and varies the duty ratio of the ultrasonic pulses of the first waveform to control the driving of the vibrator The ultrasonic drive device generates low-intensity ultrasonic pulses in the range of 50-200 mW/cm2 to reduce heat generated by driving the vibrator, thus preventing low-temperature burns from occurring on a user's body during ultrasonic treatment. In addition, the ultrasonic drive device varies the duty ratio of ultrasonic pulses in a treatment frequency range to generate ultrasonic pulses of various waveforms so that ultrasonic waves can be delivered more efficiently to parts of the user's body, thereby lowering the intensity of the ultrasonic waves and improving the treatment effect.

Dependencies are inferred from the claim text.