| 摘要 |
<p>A system and device for providing a beneficial effect to the oral cavity of a mammal, the system including means for directing a fluid effective to provide the beneficial effect onto a plurality of surfaces of the oral cavity; and the hand-held device, the hand-held device being suitable for providing the fluid to the directing means, and including means for providing reciprocation of the fluid, means for controlling the reciprocation of the fluids, means for conveying the fluid through the device system, a reservoir for containing the fluid, a power source and a linear motor.</p> |
