| 摘要 |
The instrument consists of an elastic sheet (6) borne on three sides by an elastic frame of exhaustion (1,2,5) with two ways fitted to the central exhauster, which is supplied with another or two other holds for the local suctions (11-13). The sheet is centrally held by the tooth and, owing to its elastic nature, forms a cavity for the collection of liquids. The employ of the flexible frame permits a shape adjustment and also to accede to the mouth cavity as well as not to cause any hindrance in breathing. The proceeding can be carried out by the only operator and automatically performs the liquid elimination. |
