| abstract |
Embodiments of the invention relate generally to cartridges, devices and methods for pharmaceutical constituents for storage, mixing and delivery. Particular embodiments relate to a device and method for pharmaceutical constituent mixing and delivery using a double-chambered cartridge within a socket member, for use as part of a syringe device. Other embodiments relate to a cartridge assembly for storing the pharmaceutical constituents prior to mixing and a method of forming the cartridge assembly. Still further embodiments relate to an extensible plunger for actuation of the delivery device. The extensible plunger is actuated in a first stroke while in its retracted state to mix the constituents and is actuated in a second stroke in its extended state to deliver the mixed constituents to an external volume. |