Patent attributes
An auto-injector comprising a housing arranged to contain a syringe. The syringe is slidably arranged with respect to the housing, a spring capable of pushing a needle from a covered position into an advanced position, operating the syringe to supply a dose of medicament, and retracting the syringe into a covered position and an activator. The spring is arranged to be grounded in the housing for advancing the needle and for injecting the dose of medicament. The drive spring grounded in the housing switched to its proximal end for retracting the syringe. An interlock sleeve telescoped within the housing. The activator comprises a trigger, wherein the trigger button is locked, thereby preventing actuation when the interlock sleeve is in its proximal position in an as delivered state and wherein translation of the interlock sleeve unlocks the trigger button so as to allow actuation.
