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Details for Patent: 4,907,583

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Summary for Patent: 4,907,583

Title: Device in powder inhalators
Abstract:Device in a previously known powder inhalator intended for inhalation of an air flow which contains pharmacologically active compound in micronized form. The powder inhalator comprises a nozzle unit (2) with a nozzle aperture (2a) as well as a container unit (3) with a releasing or dosing unit (6) for delivering the active compound. The air flow generated by inhalation is at least partly aspirated through an air conduit (7) located in the container unit (3), which conduit extends from an air inlet (8), communicating with the environment, via said releasing or dosing unit (6), up to said nozzle unit (2). According to the invention, deflector devices are stationarily arranged in the container unit (3) and/or in the nozzle unit (2), said deflector devices, for example in the shape of a helical channel portion (13), being arranged to create a powerful deflecting movement for the purpose of disrupting said powder particles into the respirable particle size distribution (less than 5 .mu.m).
Inventor(s): Wetterlin; Kjell I. L. (S Sandby, SE), Virtanen; Risto (Nurmijarvi, FI), Andersson; Jan A. R. (S Sandby, SE)
Assignee: Aktiebolaget Draco (Lund, SE)
Application Number:07/287,611
Patent Claim Types:
see list of patent claims
Compound; Delivery; Device;

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Foreign Priority and PCT Information for Patent: 4,907,583

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Sweden86010600Mar 07, 1986

International Patent Family for Patent: 4,907,583

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Israel81686<disabled in preview>
Denmark115487<disabled in preview>
Denmark162424<disabled in preview>
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.

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