Luer attachment for syringe safety

摘要

The needle head assembly is used with an ISO luer lock or luer slip syringe having a single thread or multiple threads. The assembly includes a one or two piece luer needle housing having a plunger end, a needle end and a pair of opposing slots located at the needle end thereof. A plunger is axially movable relative to the upper end of the luer needle housing. A needle holder assembly is located in the needle end of the needle housing, with the holder assembly including a bridge fixed in the needle end of the needle housing. The bridge includes a needle holder that has portions extending in opposite directions from the bridge. A diaphragm with a center aperture is sleeved over one of the portions of said needle holder which faces the plunger end of the needle housing. The needle holder has a center passage which permits a needle to be inserted and secured in position at the time of assembly. The one portion of the needle holder extends toward the plunger end of the needle housing thereby permitting different gauges of needles to be used with only one size of diaphragm.