Jet injector

Details Jet injector Jet injector

1997-12-09

1999-09-21

Coggins, Wynn Wood

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604211, A61M 530

Patent

active

059546891

ABSTRACT:
An injector comprising a changeable cylinder ampoule (2) containing medicine for a number of injections into which ampoule a piston (4) is pressed by a piston rod (9) driven by a drive mechanism to dispense a dose of medicine through a nozzle (5) as a high speed jet which penetrates the skin. The injector comprises a distal part (1) accommodating the cylinder ampoule (2) and a proximal part (8) containing the drive mechanism and the piston rod (9) which can be advanced a set distance by the drive mechanism when released, the distal and the proximal parts being provided with mutually engaging threads so that one of these parts can successively be screwed into the other to set a dose to be delivered by the device.

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