Inhaler

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2377533

Device for use with an inhaler, the inhaler comprising a body, an aerosol canister arranged in said body containing medicament, comprising a metered dose chamber and able to dispense a metered dose of said medicament, a nozzle in fluid communication with said canister, an opening for dispensing of said medicament in fluid communication with said nozzle, said device comprising means (34, 36, 42, 44, 46, 50, 52) for activating said canister to open and dispense said medicament in response to an airflow in the inhaler caused by inhalation of a user through said opening, return means (42, 46, 56, 58, 60) for deactivating said canister to close it, characterised in that said return means deactivates said canister when the airflow drops below a certain threshold value.

La présente invention concerne un dispositif destiné à être utilisé avec un inhaleur qui est comporte un corps et une cartouche aérosol qui est logée dans le corps et qui contient le médicament. Ce dispositif comprend une chambre de dosage et permet de dispenser une dose du médicament, une buse en communication de fluide avec cette cartouche, une ouverture en communication de fluide avec la buse et destinée à dispenser ce médicament. Ce dispositif comprend des moyens (34, 36, 42, 44, 46, 50, 52) permettant d'activer cette cartouche pour ouvrir et dispenser ce médicament en réaction à un flux d'air circulant dans l'inhaleur provoqué par l'inhalation d'un utilisateur par ladite ouverture, des moyens de retour (42, 46, 56, 58, 60) permettant de désactiver cette cartouche pour la fermer. L'invention est caractérisée en ce que ce moyen de retour désactive la cartouche lorsque le flux d'air goutte en deçà d'une certaine valeur seuil.

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