Method for dispensing liquid from a multi-dose cartridge

B - Operations – Transporting – 67 – D

Patent

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B67D 7/02 (2010.01) B67D 1/12 (2006.01)

Patent

CA 2173161

A method for accessing and dispensing liquid from a multi-dose cartridge of the type having a vent/draw system is disclosed. The method employs using a cartridge interface system having a needle for accessing the cartridge. The needle is attached to a piston, which is in turn connected by means of a crank and linkage to a gear motor. This gear motor drives the piston effecting the motion of the needle. The action of the gear motor is responsive to signals from various sensors, which permit a fully automated method of accessing and dispensing liquid. In the method, the cartridge is accessed when its presence is detected by the cartridge interface method. Liquid is dispensed continuously until the absence of liquid is detected, at which time the cartride is disabled by disengaging the vent/draw system and disconnected the cartridge interface system from the cartridge.

L'invention porte sur un procédé permettant d'accéder à un liquide contenu dans une cartouche multidose munie d'un système de mise à l'air libre/soutirage, et de le distribuer et utilisant une interface d'adaptation à la cartouche munie d'une aiguille. L'aiguille est attachée à un piston qui est lui même relié à un moteur par l'intermédiaire d'un engrenage et d'un système bielle-manivelle. Ledit moteur commande le piston qui déplace l'aiguille. Le fonctionnement du moteur répond aux signaux de différents capteurs qui assurent automatiquement l'accès au liquide et son prélèvement. Selon cette méthode l'accès à la cartouche a lieu quand sa présence est détectée par le biais de l'interface. Le liquide est prélevé de manière continue jusqu'à ce que l'absence de liquide soit détectée. La cartouche est alors rebutée, après le dégagement du système de mise à l'air libre/soutirage et le débranchement de l'interface d'avec la cartouche.

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