| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasonic toothbrush with undamped vibration generated from the ultrasonic generator, which is capable of transmitting ultrasonic vibration to a wide range of oral cavity. <P>SOLUTION: The ultrasonic toothbrush provides a hollow portion 12a, a head 12 with a brush 11, an ultrasonic vibrator 13 which generates the ultrasonic vibration at the top end 14a, and a rod 14 the top end 14a of which is to be attached to the hollow portion 12a of the head 12. The first emitting means 23 is provided on the surface 21 where the brush 11 is provided and the second emitting means 26 is provided on the surface 22 opposing to the surface 21 where the brush 11 is provided, since the head 12 emits the ultrasonic vibration generated from the ultrasonic vibrator 13. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
