Patent ID: 6935384

Claim:
A needle free injection system comprising: an injection assembly comprising: a single-use removable fluid ejection assembly comprising: a body terminating in a nozzle; a fluid reservoir housed within the body, the fluid reservoir being adapted to receive a fluid injectate; and a plunger disposed within the fluid reservoir; a propulsion assembly comprising: a housing adapted to receive at least a portion of the removable fluid ejection assembly; and a propulsion system adapted to apply sufficient force to the fluid ejection assembly to cause ejection of the fluid injectate through the nozzle; and a filling device adapted to sterilely deliver a predetermined amount of injectate from a common reservoir to a plurality of fluid ejection assemblies, the filling device comprising: a filler valve including: a fluid path disposed between the common reservoir and the single use removable fluid ejection assembly; a valve seat for receiving the filler valve; a rack for receiving the plurality of fluid ejection assemblies; and means for sealing and permitting fluid to sterilely flow under pressure from the common reservoir into the fluid ejection assembly without insertion of any component of the filler valve into the fluid ejection as assembly.