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US 6,769,601 B2Granted
Inhaler with a dose counter
AssigneeOrion Corporation
InventorsJussi Haikarainen, Kari Seppälä, Jarkko Munukka, Esa Muttonen, Elizabeth Stares, Martin Murphy, Matthew Young
Life of this patent
Estimating the term…
Abstract
A multiple-dose powder inhaler comprising an inhaler body defining a medicament container, an air channel, a mouthpiece, a rotatable metering drum with one or more peripheral dosing recesses and a dose counter for indicating the number of metered doses of medicament that have been dispensed from, or remain in, the medicament container. The inhaler is useful, for example, in the treatment of asthma.
Claims13
A multiple-dose powder inhaler for dispensing powdered medicament by inhalation comprising
- an inhaler body defining a medicament container for receiving a plurality of powdered medicament doses;
- an air channel through which air can be drawn via a mouthpiece;
- a metering drum rotatable about its rotational axis and having one or more peripheral dosing recesses for receiving in one position a metered dose of powdered medicament from the medicament container and for bringing in another position a metered dose of powdered medicament to the air channel;
- and
- a dose counter for indicating the number of metered doses of medicament that have been dispensed from, or remain in, the medicament container, said dose counter comprising
- a counter wheel having a central hole, said counter wheel being rotatably mounted about a bearing axle having a longitudinal axis substantially parallel to and spaced from the rotational axis of the metering drum, said bearing axle extending from the inhaler body and through the central hole, and said counter wheel having counting indicia thereon and a plurality of gear teeth;
- extending from the metering drum a driving pin adapted to engage with at least one of said plurality of gear teeth of the counter wheel upon every complete revolution of the metering drum so as to rotate said counter wheel an incremental amount;
- and
- a flexible brake finger extending from the inhaler body and adapted to engage with the counter wheel so as to maintain a unidirectional rotation and to prevent unintentional movement of the counter wheel.
6 more elements
Dependencies are inferred from the claim text.