Electric toothbrush comprises an electromechanical converter in the brush element, with a circuit for activating the converter and producing an ultrasonic wave

摘要

The electric toothbrush comprises an electromechanical converter (9) in the brush element (3). A circuit is provided for activating the converter and for producing an ultrasonic wave (13). The converter is designed for generating an ultrasonic oscillatory movement of the brush element or brush head (6).