Dry-powder inhaler

A - Human Necessities – 61 – M

Patent

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Details

A61M 15/00 (2006.01)

Patent

CA 2551561

The invention provides a dry-powder inhaler device 10 comprising at least one air inlet 13, a flow chamber 11 and an air outlet 16 leading to a mouthpiece 12, the flow chamber 11 further comprising at least one compressed-powder volumes 19 and a multiplicity of scraping surfaces 18; wherein the inhalation action of the patient applied at the air outlet 16 causes air to flow from the at least one air inlet 13 through the flow chamber 11, the air flow generating relative motion between the compressed-powder volume 19 and the scraping surfaces 18 such that fine particles of powder are scraped from the compressed-powder volume 19 and inhaled by the patient.

L'invention concerne un dispositif d'inhalation de poudre sèche (10) comprenant au moins une entrée d'air (13), une chambre d'écoulement (11) et une chambre de sortie (16) menant à une embouchure (12), la chambre d'écoulement comprenant en outre au moins un volume de poudre comprimée (19) et une multiplicité de surfaces de raclage (18), l'action d'inhalation du patient appliquée à la sortie d'air amenant l'air à s'écouler d'une entrée d'air au moins à travers la chambre d'écoulement, l'écoulement d'air générant un déplacement relatif entre le volume de poudre comprimée et les surfaces de raclage de telle sorte que de fines particules de poudre sont raclées depuis le volume de poudre comprimée et inhalées par le patient.

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