| 摘要 |
A conventional electric toothbrush of the type having a vibrating brush head mounted on a battery operated hand unit is modified so that its bristles can be replaced without replacing the entire bristle head. The bristle head includes a first shaft having a proximal end and a distal end, bristles mounted on the distal end of the first shaft, and means for releasably mounting the first shaft on the hand unit and for responding to a force produced by the hand unit by vibrating the first shaft. The bristle head is modified by cutting or otherwise dividing the first shaft to remove the distal end holding the bristles, and then releasably coupling a replacement brush (26) to the new distal end of the first shaft, the replacement brush including a second shaft having a distal end and a proximal end and bristles mounted on the distal end, the proximal end of the second shaft being releasably coupled to the new distal end of the first shaft.
|
