US Patent 7223259 Syringe holders

A syringe holder is designed to be thrown away after a single use with the syringe safely captive within. The holder has a barrel (5) into whose rear end a syringe (1) is entered until the rear flange (2) of the syringe seats in a socket (15) . Then a gate (16) is hinged in a radial plane through a slot (14) in a thick flange (12) surrounding the socket (15) and snap fastens in a position obstructing rearward movement of the syringe (1) . The syringe needle (3) projects forwardly of the barrel and is shrouded by a sleeve (7) captive to the barrel and urged forwards by a spring (6).