| 摘要 |
<p>A safety syringe comprises an syringe cylinder (10); an interior of the syringe cylinder being formed as a receiving chamber (13); an interior of the reduced section (11) being formed with a receiving hole (14) communicated to the receiving chamber (13); a push rod (20) movably inserted in the receiving chamber (13) of the syringe cylinder (10) and movably linearly in the receiving chamber; an elastic plug (25) being installed at one end of the push rod (20); a needle set having a syringe needle (31), a seat (32) and a sleeve (33); the syringe needle (31) being inserted into and fixed to the seat (32); an outer expanded round buckling ring (321) being extended from the seat (32); a lower side of the buckling ring (321) of the seat (32) being formed with an outer thread (322) for locking the sleeve (33); the sleeve (33) being received in the receiving hole (14); a periphery at a bottom of the tapered section (332) being extended downwards with a protrusion (338).</p> |
