Needleless injector

Details Needleless injector Needleless injector

A - Human Necessities

61

M

A61M 5/30 (2006.01) A61M 5/20 (2006.01) F03G 7/06 (2006.01)

Patent

CA 2464954

An injector (10) includes a housing having a chamber (12) for holding a liquid formulation of an active principle to be injected into a biological body and an output port (13) in fluid communication with the chamber (12) through which the liquid formulation is injected. A piston (20) is positioned within the housing, and includes an end portion (36) with substantially the same shape as the chamber. A magnetic force draws the piston (20) and housing together to expel the liquid formulation out of the chamber through the output port (13).

L'invention concerne un injecteur équipé d'un logement comprenant une chambre destinée à recevoir une formulation liquide d'un principe actif à injecter dans un corps biologique, et d'un orifice de sortie en communication fluidique avec la chambre à travers lequel est injectée la formulation liquide. Un piston est positionné dans le logement et comprend une partie d'extrémité présentant sensiblement la même forme que la chambre. Une force magnétique appuie sur le piston et le logement afin d'expulser la formulation liquide hors de la chambre à travers l'orifice de sortie.

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