| 摘要 |
The invention relates to a safety syringe to prevent accidental puncturing of attending medical personnel by an infected syringe needle. The safety syringe has an elongated tubular casing, which houses an elongated needle guard, which is telescopically connected to the casing and is mounted in co-axial alignment with the casing. A syringe barrel is co-axially mounted within the needle guard, the syringe barrel carrying a needle assembly on one of its ends, and an end plate on its opposite end. The end plate "snaps" into a groove formed in a transverse flange of the casing, fixedly attaching the syringe barrel to the casing. A sealing plate covers the locked end plate by engaging within another groove formed in the flange. One or more resileint depressible locking tabe are carried by the needle guard and extend through corresponding aligned openings formed in the casing to lock the needle guard in an extended position covering the needle. When the locking tabs are depressed, and an inward pressure is exerted on the forward end of the needle guard, the needle guard can be moved against the tension of a coil spring inside the casing and uncover the syringe needle to allow withdrawing of medication from the medicine bottle, or performing of an injection.
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