NEEDLE-FREE INJECTION DEVICE AND PRIMING SYSTEM
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United States of America Patent
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app pub date -
Feb 20, 2009
filing date -
Jan 27, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Needle-free injection devices having a delivery system to effect an injection and a body configured to house the delivery system. The delivery system includes an injectate assembly adapted to house a volume of liquid and a drive assembly adapted to expel the volume of liquid from the injectate assembly. In some embodiments, the drive assembly includes a pair of parallel springs. The device further includes a priming system adapted to prepare the device for delivery of an injection. The priming system includes a force-preparation assembly adapted to selectively arrange the drive assembly to provide the drive force to the injectate assembly. In some embodiments, the priming system includes a locking assembly adapted to releasably retain the injectate assembly relative to the body. In some embodiments, the priming system includes a dosing assembly adapted to selectively draw a volume of liquid into the injectate assembly.
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