Dry powder inhalers, related blister package indexing and opening mechanisms, and associated methods of dispensing dry powder substances
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United States of America Patent
Stats
-
Nov 18, 2008
Grant Date -
May 19, 2005
app pub date -
Oct 21, 2004
filing date -
Oct 27, 2003
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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