Minimizing powder retention on surfaces

A - Human Necessities – 61 – J

Patent

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Details

A61J 3/02 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2569574

The invention relates to a method for improving the powder output, i.e. the emitted medication dose, from a dry powder inhaler device by minimizing the powder retention inside the device. Also therapeutic efficacy of the metered medication dose is hereby improved. It is found that adding a smaller amount of excipient than would be necessary in an ordered mixture, to a metered dose of an API formulation raises the emitted API dose when the dose is inhaled together with the excipient.

L'invention concerne un procédé permettant d'améliorer la sortie de poudre, c'est-à-dire, la dose de médicaments émise, à partir d'un dispositif d'inhalateur de poudre sèche par réduction au minimum de la rétention de poudre à l'intérieur du dispositif. L'efficacité thérapeutique de la dose de médicaments mesurée est par conséquent également améliorée. Il s'avère que l'ajout d'une plus petite quantité d'excipient que nécessaire dans un mélange ordonné, à une dose mesurée d'une formulation d'IPA élève la dose d'IPA émise lorsque la dose est inhalée avec l'excipient.

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