Patent ID: 9592350
Date: 2017-03-14
CPC Classifications: A61M

Claim:
1. A safety device for a pre-filled syringe comprising: a hollow support body with a helical groove formed into an inner surface thereof, a mounting collar for mounting the pre-filled syringe to the support body, the mounting collar being releasably mounted to the support body by a catch protruding through an aperture formed into the support body, a spinning collar with a helical tongue formed to an outer surface thereof, and a torsion spring, wherein the helical groove accommodates the helical tongue and, upon release, the torsion spring is capable of exerting a torque upon the spinning collar, which causes the spinning collar to rotate within the support body, whereby engagement of the helical groove and the helical tongue redirects rotational movement of the spinning collar to translatory movement that moves the mounting collar in a proximal direction.