| 摘要 |
A single use syringe (20) comprising a hollow barrel (22) having a longitudinal axis X extending in a longitudinal direction and including a first engagement formation (74) formed on an internal wall of said hollow barrel (22). The syringe (20) includes a needle tip (24) in fluid communication with the barrel (22), and a plunger (28) insertable within the barrel (22). The plunger (28) having a stem (29) and a head (34) separably connected to the stem (29). The head (34) including a second engagement formation (46). The plunger (28) being displaceable through a longitudinal stroke in the longitudinal direction, to a captive position at an end of the stroke in which the first engagement formation (74) engages the second engagement formation (46), thereby securing the plunger (28) within the barrel (22). In the captive position, the stem (29) is adapted to separate from the head (34) if an attempt is made to longitudinally displace the stem (29) in either an insertion or retraction direction of the stroke, by application of a predetermined longitudinal force, such that the head (34) remains secured within the barrel (22). |
