Unit dose dry powder inhaler

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2558566

A unit dose dry powder inhaler (20) includes a chamber housing (100) containing a powder dispersion chamber (45). A chamber tube (40) extends from the dispersion chamber into the mouthpiece (32). A cover or cup (26) is rotatably attached to chamber housing. A dose of a dry powder (92) is contained at a powder location (74) in the chamber housing. An air passageway leading from the powder location to the dispersion chamber is closed off by the cover. When the cover is rotated to an open position, the air passageway is opened. The user inhales on the mouthpiece drawing air through the powder location, the air passageway, the dispersion chamber and the chamber tube, through the mouthpiece and into the users lungs. The unit dose of dry powder is stored directly in, or is part of, the inhaler.

L'invention concerne un inhalateur de poudre sèche en dose unitaire (20). Ledit inhalateur comprend un logement de chambre (100) contenant une chambre de dispersion de poudre (45). Un tube de chambre (40) s'étend de la chambre de dispersion jusque dans un embout buccal (32). Une coiffe ou coupelle (26) est fixée rotative au logement de chambre. Une dose d'une poudre sèche (92) est contenue au niveau d'un emplacement de poudre (74) dans le logement de chambre. Un passage d'air conduisant de l'emplacement de poudre à la chambre de dispersion est fermé par la coiffe. Lorsque la coiffe est tournée vers une position ouverte, le passage d'air est ouvert. L'utilisateur inhale sur l'embout buccal, aspirant l'air à travers l'emplacement de poudre, le passage d'air, la chambre de dispersion et le tube de la chambre, par l'intermédiaire de l'embout et dans les poumons de l'utilisateur. La dose unitaire de poudre sèche est stockée directement au niveau, ou fait partie, de l'inhalateur.

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