| 摘要 |
<p>Saliva sucking spout (10) for dentist apparatus free from the bacterium and virus infection risk provided with a racking container (11, 113) and a one-way valve (12, 134) which cooperate to prevent every bacterium flora, normally formed in the hose connecting the spout to the sucking device from going back up to the sucking spout put in the patient's mouth. Preferably, the spout is of the disposable type.</p> |
