Metered dose inhalation unit with slide means
US5598836A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | May 26, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M15/0096
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A spray-entrapped product such as dispensed by an MDI device includes an elongated passageway having a mouthpiece portion and a main chamber portion. The MDI device is mounted to direct a medication spray into the main chamber. A first air inlet allows a low-level inspiratory breath to be developed through the unit prior to operation of the MDI device. When the MDI device is operated a second, air inlet is opened, allowing a higher-level breath to be developed, which causes a high level of mixing with the MDI spray for efficient draws into the lungs. The second air inlet remains open after MDI operation ceases, insuring that a complete, high flow rate breath can be made to fully sweep the medication out of the chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.