US2009205657A1PendingUtilityA1

Pre-metered dose magazine for dry powder inhaler

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Assignee: NORTON HEALTHCARE LTDPriority: Feb 20, 2003Filed: Jan 16, 2009Published: Aug 20, 2009
Est. expiryFeb 20, 2023(expired)· nominal 20-yr term from priority
Inventors:Brian BarneyDavid O'LearyEsther Perea-BorobioAndrew M. DicksonSophia ChewRachel Striebig
A61M 15/00A61M 15/0068A61M 15/0045A61M 15/0048A61M 15/0035A61M 2202/064A61M 15/0043A61M 15/0025A61M 15/0051A61M 15/0061
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Claims

Abstract

A dry powder inhaler including a housing having a mouthpiece and a delivery passageway connected to the mouthpiece, a magazine positioned within the housing and including a plurality of reservoirs for holding doses of dry powder, and wherein the magazine is movable within the housing so that the reservoirs are sequentially positioned within the delivery passageway of the housing upon movement of the magazine, a cover connected to the housing and movable to open and close the mouthpiece of the housing, and a rake connected to the cover, extending into the housing and engageable with the magazine so that, upon the cover being moved to open the mouthpiece, the rake moves the magazine and causes one of the reservoirs of the magazine to be positioned within the delivery passageway.

Claims

exact text as granted — not AI-modified
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       37 . A dry powder inhaler, comprising:
 a housing having a mouthpiece and a delivery passageway connected to the mouthpiece;   a magazine positioned within the housing and including a plurality of reservoirs for holding doses of dry powder, the magazine being movable within the housing to sequentially position the reservoirs within the delivery passageway, the magazine including a layer of moisture resistant, air-tight material secured to an upper surface of the magazine over the reservoirs;   a de-agglomerator positioned between the magazine and the mouthpiece for creating turbulent airflow;   a cover connected to the housing and selectively movable to open and close access to the mouthpiece;   a rake connected to the cover and extending into the housing, the rake being engageable with the magazine so that, upon movement of the cover to open access to the mouthpiece, the rake moves the magazine and causes one of the reservoirs to be positioned within the delivery passageway; and   a foil removal mechanism having a rotatable winding wheel that peels the layer of moisture resistant, air-tight material from the upper surface of the magazine as the magazine is moved.   
   
   
       38 . A dry powder inhaler, comprising:
 a housing having a mouthpiece and a delivery passageway connected to the mouthpiece;   a magazine positioned within the housing and including a plurality of reservoirs adapted to hold doses of dry powder, the magazine being movable within the housing to sequentially position the reservoirs within the delivery passageway;   a cover connected to the housing and selectively movable to open and close access to the mouthpiece; and   a rake connected to the cover and extending into the housing, the rake being engageable with the magazine so that, upon movement of the cover to open access to the mouthpiece, the rake moves the magazine and causes one of the reservoirs to be positioned within the delivery passageway;   wherein the magazine includes a pair of continuous strips of material which define the plurality of reservoirs, the strips being separable from one another so as to open the reservoir positioned within the delivery passageway.   
   
   
       39 . An inhaler according to  claim 38 , wherein each strip is wound on a post following separation. 
   
   
       40 . An inhaler according to  claim 38 , further comprising a de-agglomerator positioned between the magazine and the mouthpiece for creating turbulent airflow. 
   
   
       41 . An inhaler according to  claim 38 , wherein the magazine is rotatably movable with respect to the housing in only a single direction. 
   
   
       42 . An inhaler according to  claim 38 , further comprising an indicator for indicating the number of reservoirs containing dry powder remaining in the magazine. 
   
   
       43 . An inhaler according to  claim 38 , further comprising dry powder medicament contained in the reservoirs of the magazine. 
   
   
       44 . An inhaler according to  claim 38 , wherein the strips are formed from a moisture resistant, air-tight material. 
   
   
       45 . An inhaler according to  claim 38 , further comprising means for determining when a last one of the reservoirs has been positioned within the delivery passageway. 
   
   
       46 . A dry powder inhaler, comprising:
 a housing having a mouthpiece and a delivery passageway connected to the mouthpiece;   a strip of material positioned within the housing and defining a plurality of reservoirs adapted to hold doses of dry powder, the strip of material being movable within the housing to sequentially position the reservoirs within the delivery passageway;   a cover connected to the housing and selectively movable to open and close access to the mouthpiece; and   a rake connected to the cover and extending into the housing, the rake being engageable with the strip of material so that, upon movement of the cover to open access to the mouthpiece, the rake moves the strip of material and causes one of the reservoirs to be positioned within the delivery passageway; and   means for opening the reservoir positioned within the delivery passageway to release a dose of dry powder.   
   
   
       47 . An inhaler according to  claim 46 , wherein the means for opening the reservoir separates a first portion of the strip of material from a second portion of the strip of material. 
   
   
       48 . An inhaler according to  claim 47 , further comprising a first post for winding the first portion of the strip of material and a second post for winding the second portion of the strip of material. 
   
   
       49 . An inhaler according to  claim 46 , further comprising a de-agglomerator positioned between the strip of material and the mouthpiece for creating turbulent airflow. 
   
   
       50 . An inhaler according to  claim 46 , wherein the strip of material is rotatably movable with respect to the housing in only a single direction. 
   
   
       51 . An inhaler according to  claim 46 , further comprising an indicator for indicating the number of reservoirs containing dry powder remaining in the strip of material. 
   
   
       52 . An inhaler according to  claim 46 , further comprising dry powder medicament contained in the reservoirs in the strip of material. 
   
   
       53 . An inhaler according to  claim 46 , wherein the strip of material is formed from a moisture resistant, air-tight material.

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