Aerosol delivery system for dispensing dental compositions

A - Human Necessities – 61 – C

Patent

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A61C 9/00 (2006.01) B65D 83/14 (2006.01)

Patent

CA 2652032

An aerosol delivery system for dispensing a multi-component dental composition is provided. The system is particularly suitable for dispensing dental impression material containing mixed components A and B. The system includes a dispensing device having an inner container with pressurized aerosol chambers. The first chamber is used for storing and dispensing component A, and the second chamber is used for storing and dispensing component B. The dispensing device includes a piston assembly having a first piston member that slides within the first chamber and a second piston member that slides within the second chamber. The pistons force the components into a common manifold, and the combined material is fed into a dispensing tip containing a static mixer, wherein the material is mixed and then dispensed.

L'invention concerne un système d'administration d'aérosol destiné à distribuer une composition dentaire à multiple composants. Le système est particulièrement approprié pour distribuer une matière d'empreinte dentaire contenant des composants A et B mélangés. Le système comprend un dispositif de distribution ayant un conteneur interne avec des chambres d'aérosol pressurisées. La première chambre est utilisée pour stocker et distribuer le composant A, et la seconde chambre est utilisée pour stocker et distribuer le composant B. Le dispositif de distribution comprend un ensemble de pistons ayant un premier élément de piston qui coulisse à l'intérieur de la première chambre et un second élément de piston qui coulisse à l'intérieur de la seconde chambre. Les pistons forcent les composants à l'intérieur d'un collecteur commun, et la matière combinée est amenée à l'intérieur d'un embout de distribution contenant un mélangeur statique, la matière étant mélangée puis distribuée.

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