INJECTION DEVICE WITH END OF DOSE MECHANISM

An injection device including a housing defining a central axis. A drive system defines an initial position and an end of stroke position relative to the housing. Axial movement of the drive system expels medicament from a cartridge. A spring mechanism is operably coupled with the drive system and includes first and second spring members. When the drive system is in the end of stroke position, the first spring member moves the second spring member relative to a triggering structure from a first position to a second position as fluid pressure of the medicament is reduced and the injection is completed. When second spring member moves into the second position with the drive system in the end of stroke position, the triggering structure actuates the second spring member to thereby generate a tactile and/or audible signal and indicate that the injection is complete.