Abstract:
An indexed drug delivery device () comprising a valve assembly () comprising a housing () and a valve, the valve disposed within the housing, one or more keys () integral to the housing, the keys complementary to corresponding openings on a collar (), a pressurized canister () in fluid communication with the valve assembly, the canister containing an active pharmaceutical ingredient and an inactive carrier gas, a receiving assembly comprising a receptacle adapted to engage at least a portion of the housing, a seat adapted to engage the valve, and, a plunger assembly adapted to linearly actuate the valve assembly and canister along an axis and to engage the valve and seat, the plunger assembly comprising a carriage fixed to the collar, and, a lever having a cam adapted to engage a spring, the spring adapted to linearly actuate the carriage, valve assembly, canister and collar along the axis.