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    • 6. 发明授权
    • Aspirating dental syringe with needle shield
    • 吸头牙针注射器带针罩
    • US06416323B1
    • 2002-07-09
    • US09569692
    • 2000-05-11
    • William W. GrenfellRonald R. Klawitter
    • William W. GrenfellRonald R. Klawitter
    • A61C504
    • A61M5/3271A61M5/24A61M5/28A61M5/31505A61M5/31511A61M2005/3112A61M2005/3139A61M2005/31508A61M2005/3247A61M2205/588
    • A self-shielding aspirating dental syringe includes a body having proximal and distal ends and a cavity therein for receiving a medicine cartridge. The distal end has a double-ended needle attached thereto, and the proximal end has a opening for inserting the cartridge into the cavity, and to which a plunger assembly may be attached. A shield is slidable on the body between retracted and extended positions for uncovering and covering the needle, respectively. Cooperating detents and detent pockets are molded on the shield and body for securing the shield in the extended position. A lever is molded on the shield that is pivotable for directing the detents radially outwardly to disengage the detents from the distal detent pockets and allow retraction of the shield from the extended position. A latch is molded on the shield for locking the lever and preventing subsequent retraction of the shield from the extended position.
    • 自吸式牙科注射器包括具有近端和远端的主体和用于接收药剂盒的空腔。 远端具有连接到其上的双端针,并且近端具有用于将药筒插入空腔中的开口,并且柱塞组件可附接到该开口。 护罩可在收回位置和伸出位置之间在身体上滑动,以分别露出和覆盖针头。 在屏蔽和主体上模制合作的止动器和止动口袋,以将屏蔽件固定在伸出位置。 杠杆被模制在防护罩上,该杆可枢转,用于将掣子径向向外引导,以使掣子与远端掣子口脱离,并允许护罩从延伸位置缩回。 在屏蔽上模制闩锁以锁定杠杆并防止屏蔽件从延伸位置的后续缩回。