AIRBRAKE

摘要

A device is disclosed for controlling the duration of an administration of a prescribed dose of dry powder to a user's lung when inhaling the powder by means of a dry powder inhaler (DPI). The present device controls the speed of a moving cassette (4) carrying medication powder doses to be administered by the DPI one by one to a user. Generally the dose is pre-metered and applied to the cassette in the form of a strip (31) or a series of spots of ready-prepared powder. The present device using the airbrake arrangement (22) prolongs the time during which the pre-metered powder dose is released to the inhalation air. Adjustment means of the airbrake arrangement (22) define leakage of air (36) and thereby motion speed of a spring-loaded cassette (4). During the motion of the cassette the powder dose is sucked from the prepared dose powder strip onto the cassette (4) by a nozzle (1) connected to a mouthpiece used for inhaling medication powder from the dry powder inhaler.