Patent ID: 8216192

Claim:
A medication and needle module for an injection device, comprising: a housing including a first portion and a second portion detachably connected together, said second housing portion having a periphery complementarily shaped with a cavity in the injection device to be loadable therein; a primary container within said first housing portion and including a medication filled reservoir; a secondary container within said second housing portion and including a medication fillable reservoir; a needle cassette rotatably mounted within said second housing portion and including a plurality of delivery needles, each one of said delivery needles independently being placeable in fluid communication with said medication fillable reservoir of said secondary container at a different angular orientation of said needle cassette within said second housing portion; a transfer needle assembly within said housing and including a cannula for fluid communication between said medication filled reservoir of said primary container and said medication fillable reservoir of said secondary container; whereby the detachability of said second housing portion from said first housing portion permits said second housing portion with said secondary container and said needle cassette to be loaded as a unit independently of said first housing portion into the injection device cavity for use, wherein said primary container comprises a cartridge including a body, a movable piston and a septum, said medication filled reservoir defined by said body between said movable piston and said septum, said septum at a forward end of said body for piercing by a first end of said cannula.