Needleless syringe comprising an injector with nested elements

Details Needleless syringe comprising an injector with nested elements Needleless syringe comprising an injector with nested elements

2006-01-03

2006-01-03

Thanh, LoAn H. (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

06981961

ABSTRACT:
The invention concerns the field of needleless syringes for injecting an active principle for therapeutic purposes. More particularly, it concerns a needleless syringe for injecting an active principle (7) initially set between an injector (1, 10) comprising at least an injection nozzle, said injector being contacted with the skin, and a wall (8) mobile under the effect of a propelling system (9) pressurizing and expelling the active principle through the injector located at the syringe downstream end (2). In order to produce nozzles in a considerable injector thickness and to control the jet coherence distance, said injector (1, 10) comprises at least two elements (3, 4) whereof the contact surfaces (30, 40, 40′) are oriented towards the skin, at least a groove (31, 41, 41′) forming an injection nozzle in the assembly of said elements.

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