| 摘要 |
<p>A breakaway device (15) for orthodontic traction appliances (1) comprising a case (17) having a spring clasp (25) therein for releasably clasping a coupling member (27), the coupling member (27) separating from the clasp (25) when subjected to pull exceeding a predetermined value, with an adjustment for the clasp (25) to adjust its grip on the coupling member (27) for adjusting the breakaway pull.</p> |
