| 摘要 |
A clear rigid plastic syringe tip (14) has a central water passageway (32) and three arcuate section air passageways (34) disposed circumferentially about the water passageway (32). A novel adaptor (20) is used to mount the syringe tip (14) to the handpiece body (12). Alternatively, the syringe tip (114) has an extension (113) that mounts the syringe tip (114) into an adaptor (120) which holds the assembly in the handpiece body (12). Alternatively, the adaptor (120) is provided with a coupling device (180) for joining the syringe tip (214) to the adaptor. (120).
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