Injector for use with pre-filled syringes and method of assembly

摘要

An injection device (8) for use with a pre-filled syringe (26). The device features a track (42) and track follower (82) engagement which facilitates locking a protective needle guard (18) over the tip of the needle (30) at the conclusion of the injection. The device further includes a tamper evidence overcap (20) which, once removed from the device cannot be readily reinstalled. The injection device features a tubular handle (10) which is grasped by the hand and moved towards the injection site to administer the injection. The device is suitable for self-administration of injections.