Airbrake
US6668826B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2000 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Oct 17, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
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 (4) 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 (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 medical powder from the dry powder inhaler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.