Dry powder inhalers
US9474870B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | Oct 25, 2016 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/19
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosure describes powder inhalers and dry powder inhaler storage cassettes that include a compartment housing an elongate carrier preloaded with a plurality of doses of finely divided powder comprising a biologically active substance. The compartment is configured such that the preloaded doses are sealed within the compartment and such that the carrier may be advanced from the compartment to the chamber through an exit provided with a moisture barrier sealing system. The moisture barrier sealing system is configured and arranged such that it is relaxable during advancement of the carrier. The sealing system is in sealing configuration prior to an advancement of the carrier, is relaxed upon an advancement of the carrier and is returned to its sealing configuration at the latest after release of the powder associated with the area of the carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.