GB2480407A — Autoinjector with locking mechanism at the injection end

USPTO Abstract

An injection device (1000, figure 1) holds a medicament container (12262, figure 16A) which is driven by an energy storage means 3560 such as a spring or a canister of pressurised gas. Operation of the device is caused by movement of a trigger member 3520 forming the base of the injector which is disposed partly within and partly outside of the device housing (1100, figure 1). A locking member 3170 is removably coupled to the bottom of the housing and has a protrusion 3174 which engages with projections 3548 on the energy storage means such as cam legs 3548. Whilst the locking member is engaged, the energy storage means cannot be triggered. In operation, the locking member is pulled away from the injector which is then pressed against the patient to trigger the injection.