| 摘要 |
An continuous dry powder inhaler arrangement is disclosed, the arrangement being provided with pre-metered doses of medication powder onto an exchangeable dose member like a cassette or the like for respiratory administration of medicaments into the deep or upper lung airways. The inhal er presents a device (8) with a case having a sliding lid (17), which can be se t in an open position exposing a mouthpiece (19). The arrangement further provides dose counters (18b/18c) and a cassette counter (34). In the state with open lid (17) the device is ready to deliver a prepared pre-metered dos e of medication powder upon an inhalation via the exposed mouthpiece (19). Medication drugs are in advance dosed as medication powder and carried by an exchangeable dosing means. The exchangeable dosing member carries a number o f sequentially accessible doses, which are sealed to preserve a controlled storing of powder during the total lifetime of the dosing member. Upon an inhalation the cassette carrying a selected dose is released into a longitudinal motion by a forcing spring, whereby the protective foil is cut open to let a nozzle of a suction tube access the powder. By means of a braking arrangement the motion of the cassette is adjusted to such a speed that the time for a continuous delivery of the powder wil be time controlled to an order of 0.5 to 5 seconds. The exchangeable dosing means presents a number of pre-metered doses of deposited dry medication powder.
|
