Patent ID: 6607510
Filing Date: 2003-08-19
Classification: A61M

Abstract:
A needle-free injection system comprising:a cap including a first seal for sealing an injection orifice when engaged with an injection end of the system and a push-rod for facilitating priming of the system when engaged with a priming end of the system; a push-rod engaging mechanism disposed at the priming end of the system for receiving the push-rod; a gas cylinder for supplying pressurized gas for injecting, via the injection orifice, an injectate initially disposed within a storage chamber; and a sealing system for preventing the pressurized gas from ejecting the injectate from the system prior to actuation of the system via a slidable trigger plate, wherein the sealing system includes a second, radially displaceable seal disposed in a pressurized gas channel, and a corresponding recess in the slidable trigger plate for receiving the second seal as a result of actuation.