Needle-free injection device

Details Needle-free injection device Needle-free injection device

A - Human Necessities

61

M

A61M 5/30 (2006.01) A61M 5/307 (2006.01) A61M 5/20 (2006.01) A61M 5/315 (2006.01)

Patent

CA 2455930

A disposable gas-powered needle-free injection device comprising an outer housing having a nozzle for medicament at a forward end thereof; an inner housing located at least partly within the outer housing; a piston and ram which can be driven into the nozzle, in use, to drive medicament through the nozzle; a pierceable gas cylinder for providing driving power to the ram and piston; wherein the inner housing is axially moveable away from said nozzle, said axial movement being guided by cooperating guide means on said inner and outer housings and enabling a desired dose of medicament to be drawn into said nozzle, ready for injection.

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