NEEDLE ASSEMBLY

摘要

Disclosed is a safety needle assembly (1, 40) has a needle guard (6) that prevents accidental needle sticks before and after an injection. A locking collar (5) rotates during use as an inner protrusion (11) follows three paths (14, 15, 16) of a track (12) located on the outer surface (35) of a body housing (2). When the inner facing protrusion (11) is in the third path (16), it encounters a hard stop (36) and a rotational bias that locks the guard (6) from further retraction and, thus,covers the sharp distal end of the needle (3).