| 摘要 |
The invention relates to a special nozzle which can be fitted to a hydropulser which can be inserted under the gingiva and which allows the user to inject a liquid without risk of injury under the gingiva. It is constituted by a hollow tube 1, of which the round-shaped end 2 is inserted under the gingiva; a hollow guide rod 3 allowing adequate orientation of the instrument by a first elbow 7 and a second elbow 8; a hollow sleeve 4 allowing the instrument to be held; a valve 5 used to reduce the flow rate of the stream coming from the hydropulser, and a flexible connection 6 allowing the return of the excess liquid to the hydropulser tank. The special nozzle which can be fitted to a hydropulser according to the invention is in particular intended for irrigating pharmaceutical products under the gingiva. <IMAGE>
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