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AssigneeCrossject
InventorsAlain Navelier, Patrick Alexandre, Bernard Brouquieres, Denis Roller
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The invention concerns the technical 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, 70) initially set between an injector (1, 10) comprising at least an injection nozzle (50, 50′, 60′) 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 downstream end (2, 20) of the syringe. In order to produce nozzles passing through a considerable injector thickness and to control the jet coherence distance, said injector (1, 10) comprises a support (3, 21) with at least a housing (4, 40) wherein are stacked plates (51, 61, 91, 51′, 71′, 91′, 52, 92) each comprising an equal number of orifices aligned to form at least a nozzle (50, 50′, 60′) through the stack.
A needleless syringe for injection, an active principle, the syringe comprising at its downstream end.
The needleless syringe according to claim 3, wherein the housings and the plates comprise means of setting the angle of the plates in the corresponding housing.
An injector for a needleless syringe, the injector comprising a support, wherein the said support comprises at least one housing in which plates each having the same number of orifices stack, the said orifices being aligned to form at least one nozzle through the stack, and the orifices in the plates have simple geometric shapes so as to produce nozzles with evolving cross section.
A method of manufacturing an injector for a needleless syringe, comprising the following steps:
Dependencies are inferred from the claim text.