Dry powder inhaler

Details Dry powder inhaler Dry powder inhaler

A - Human Necessities

61

M

A61M 11/00 (2006.01) A61M 15/00 (2006.01)

Patent

CA 2187787

A dry powder medicine inhaler has a housing (403) and a mouthpiece (405). An aerosolizing chamber (407) is formed between a front wall (408) and a rear wall (409) of the housing (403). An impeller (411) is rotatably mounted on a pin(413), to rotate within the aerosolizing chamber (407). Radial inlets (425) passthrough the housing (403) and enter substantially tangentially into the aerosolizing chamber (407). A blister pack (421) on the housing (403) provides individual doses of powdered drug mixture into the aerosolizing chamber (407). The user inhales from the mouthpiece (405) causing the impeller (411) to spin and mix the powdered drug with air, which is inhaled by the patient.

Inhalateur médical à poudre sèche comportant un récipient (403) et un adaptateur buccal (405). Une chambre de dispersion d'aérosol (407) est comprise entre la paroi frontale (408) et la paroi dorsale (409) du récipient (403). Une roue (411) montée sur un axe (413) est placée dans la chambre de dispersion d'aérosol (407). Des entrées radiales (425) traversant le récipient (403) débouchent sensiblement tangentiellement dans ladite chambre (407). Un emballage encapsulé (421) se plaçant sur le récipient (403) alimente la chambre de dispersion d'aérosol (407) en doses individuelles d'un mélange médicamenteux en poudre. Le patient inspire dans l'adaptateur buccal (405) ce qui met la roue (411) en mouvement et mélange le médicament en poudre à l'air, que le patient inhale alors.

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