| 摘要 |
<p>The invention concerns a manual toothbrush facilitating cleaning interdental sulci. Said toothbrush is characterised in that the handle (1) consisting of the yoke (2) is assembled to the head (4) bearing the bristles, with a pin (3) positioned on the longitudinal side of said head. When the brush is being used, said offset articulation transforms the horizontal reciprocal movement of the handle into a vertical reciprocal movement of the ends of the head.</p> |
