Dry powder inhalers, related blister package indexing and opening mechanisms, and associated methods of dispensing dry powder substances
US7451761B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2004 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jan 24, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/584
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Dry powder inhalers with a multi-dose dry powder package for dispensing pharmaceutical grade formulations of inhalable dry powder, include: (a) a blister package comprising a plurality of spaced apart sealed blisters thereon, each blister having a projecting ceiling and a floor defining a blister channel therebetween, the blister channel comprising a dry powder therein; (b) a movable blade cartridge holding a blade at a forward portion thereof; and (c) an extendable mouthpiece attached to the movable blade cartridge. In operation, a user pulls the mouthpiece outward and then pushes the mouthpiece inward to cause the blister package to advance to position a blister in a selected dispensing position in the inhaler and to cause the blade cartridge to move the blade across a blister ceiling held in the dispensing position in the inhaler to thereby open the blister held in the dispensing position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.