Dispensing apparatus

B - Operations – Transporting – 05 – B

Patent

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Details

B05B 17/06 (2006.01) A61M 11/00 (2006.01) A61M 15/00 (2006.01) B01F 3/04 (2006.01) B01F 15/02 (2006.01)

Patent

CA 2144752

A dispensing apparatus (1) defines an outlet (3) through which a metered dose of liquid (19) from a reservoir (16) is dispersed as an atomised spray. A droplet (19) of liquid is metered onto a perforate membrane (6) which is vibrated by means of a piezoelectric transducer (10) such that atomised droplets are dispensed through the holes (7) formed in the membrane. At each actuation of a delivery means (14) which provides the metered quantity of liquid, the transducer is actuated so as to vibrate the membrane for a period greater than the dispensing period required for the droplet to be dispensed. The apparatus is particularly suitable for dispensing pharmaceutical preparations.

Un appareil de distribution (1) comporte un orifice de sortie (3) à travers lequel un dose mesurée de liquide (19) provenant d'un réservoir (16) est distribuée sous une forme vaporisée. Une gouttelette (19) de liquide est dosée et placée sur une membrane perforée (6) qui est mise en vibration au moyen d'un transmetteur piézoélectrique (10) de sorte que les gouttelettes vaporisées soient distribuées à travers les trous (7) situés dans la membrane. A chaque action d'un dispositif d'alimentation (14) qui fournit une quantité mesurée de liquide, le transmetteur est activé de manière à faire vibrer la membrane pour un temps plus long que le temps nécessaire à la gouttelette pour être distribuée. L'appareil est particulièrement utile pour distribuer des préparations pharmaceutiques.

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