The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 30, 2003
Filed:
Oct. 17, 2000
Mattias Myrman, Stockholm, SE;
Microdrug AG, Hergiswil, CH;
Abstract
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 use of a dry powder inhaler (DPI). The present device controls the speed of a moving cassette ( ) carrying medical powder doses to one by one be administered by the DPI to a user. Generally the dose is pre-metered and applied to the cassette in the form of a strip ( ) or a series of spots of ready-prepared powder. The present device using the airbrake arrangement ( ) prolongs the time during which the pre-metered powder dose is released to the inhalation air. Adjustment means of the airbrake arrangement ( ) define leakage of air ( ) and thereby motion speed of a spring-loaded cassette ( ). During the motion of the cassette the powder dose is sucked from the prepared dose powder strip onto the cassette ( ) by a nozzle ( ) connected to a mouthpiece used for inhaling medical powder from the dry powder inhaler.