| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasonic oral cavity cleaning implement which has a liquid reservoir section, and in addition, is equipped with the liquid reservoir section which is hard to present a state wherein there is no liquid in the liquid reservoir section because the liquid reserved in the liquid reservoir section for one time flows out by a large amount to the outside, and of which the ultrasonic wave generating section is hard to destroy. <P>SOLUTION: An ultrasonic toothbrush 100 is formed into a cylindrical shape, and is equipped with a chemical holding section 174 of which the distal end side is opened by an opening 174K, and which can hold a chemical in a liquid holding space SL inside, and the ultrasonic generating section 161 which is arranged on the proximal end side, and has an ultrasonic irradiation surface 163H for irradiating the chemical with an ultrasonic wave by coming into contact with the chemical. The chemical holding cylinder 174 has a shape wherein the cross sectional area of the liquid holding space SL at the distal end part is smaller than the cross sectional area of the liquid holding space SL at the proximal end part. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
