| 摘要 |
<p>The invention concerns a device comprising a curved tubular body (2), designed to be inserted in the mouth (10) and whereof the curvature corresponds at least approximately to that of the tongue (11). The proximal end of the tubular body (2) is provided with a peripherally projecting stop ring, capable of being positioned on the outside of said patient's incisors (12, 13)</p> |
