| 摘要 |
<p>A safety syringe preferably for use on a small diameter syringe (210) and including a needle shield (240) that is slidable between a needle exposing retracted position and a needle protecting extended position and wherein the needle shield is rotatable in the extended position to a locked and extended position. The safety syringe includes a collar (222) mounted on the distal end of the syringe and a plurality of elongate keys (242) on the interior surface of the needle shield. The keys are slidably received in various protrusions and slots (225, 231) on the collar (222) to releaseably retain the needle shield in the retracted and extended positions and to retain the needle shield in the locked and extended position. A needle sheath (264) is also removably mounted on the distal end of the needle shield adjacent to a flange (260) on the needle shield to cover the needle of the syringe when the needle shield is in the initial retracted position.</p> |
