| 摘要 |
PROBLEM TO BE SOLVED: To prevent water stuck inside a water circuit from being jetted together by air when drying the inside of the mouth (especially a part to be treated) using the air, to easily dry the inside of the mouth and to prevent a state inside the mouth (especially the part to be treated) from becoming hard to see by separating a water jetting path and an air jetting path in a dental syringe. SOLUTION: The dental syringe comprises the nozzle chip 20 of concentric double tubes composed of an inner cylinder 23 for jetting the water and an outer cylinder 25 for jetting the air, which is concentric to the inner cylinder 23, and a syringe main body 10 on which the nozzle chip can be freely detachably mounted. The syringe main body 10 is provided with an opening/closing valve for opening and closing a water path to the inner cylinder 23, an opening/closing valve for opening and closing an air path to the outer cylinder 25, and an operation lever capable of selectively or simultaneously opening and closing the opening/closing valves. COPYRIGHT: (C)2008,JPO&INPIT
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