590608 Disclosed is an auto-injector which has ? first sub-assembly with ? chamber for holding ? fluid. The chamber has ?n inner surface and ?n exit aperture. The first sub-assembly has ? stopper movably disposed within the chamber and having an outer surface substantially in contact with the inner surface about its perimeter. The first sub-assembly has an adapter adapted to transfer fluid into the chamber, wherein the adapter. The auto-injector also has means for moving the stopper through the chamber and means for transferring fluid into the chamber when the stopper is moved away from the exit aperture. The adapter is adapted to receive ? fluid container and transfer the fluid via ? fluid pathway from the container to the chamber. The means for transferring fluid into the chamber include ? hollow fluid transfer needle adapted to engage the fluid container to transfer fluid from the fluid container through the hollow needle, as the stopper is moved away from the exit aperture. The hollow needle is adapted to pierce the stopper to deliver fluid through the stopper into the chamber.
