Device and method for dispensing a fluid

Details Device and method for dispensing a fluid Device and method for dispensing a fluid

A - Human Necessities

61

B

A61B 18/02 (2006.01)

Patent

CA 2534209

The invention concerns an automatic fluid dispensing device comprising a container (1), a push-button (2), a plurality of springs (4, 13), at least one cam (5), a plunger (7), an aerosol (14) containing the fluid (17) to be dispensed. The invention is characterized in that it further comprises a sealed pressure chamber (12) provided with at least one outlet for releasing the pressure from the pressure chamber (12) when the latter is higher than atmospheric pressure, the compression of the push-button (2) acting, via the cam (5) of the plunger (7) to increase the pressure in said chamber (12) acting on the aerosol (14) so that it delivers the fluid during a predetermined time. The invention also concerns a method using said device.

La présente invention se rapporte à un dispositif de délivrance automatique de fluide, comportant un contenant (1), un bouton-pressoir (2), une pluralité de ressorts (4, 13), au moins une came (5), un piston (7), un aérosol (14) contenant le fluide (17) à délivrer, caractérisé en ce qu'il comprend également une chambre de pression (12) étanche disposant d'au moins un orifice de fuite pour libérer la pression de la chambre de pression (12) lorsque celle- ci est supérieure à la pression atmosphérique, l'enfoncement du bouton- pressoir (2) agissant, via la came (5) et le piston (7), pour augmenter la pression dans ladite chambre (12) agissant sur l'aérosol (14) afin qu'il délivre du fluide pendant une durée prédéterminée. La présente invention se rapporte également au procédé de mise en oeuvre de ce dispositif.

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