Methods of operating dry powder inhalers having spiral travel paths with microcartridges of dry powder
Dry powder inhalers include: (a) a first generally planar spiral travel path in an inhaler body, wherein the first spiral travel path has a plurality of adjacent curvilinear channels forming lanes with upstanding sidewalls, including an inner lane and an outer lane; and (b) a plurality of discrete s...
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| creator | WARDEN JEFFREY ALAN KIM JOHN OXLEY NICHOLAS KING MICHAEL FINNEY BENJAMIN |
| description | Dry powder inhalers include: (a) a first generally planar spiral travel path in an inhaler body, wherein the first spiral travel path has a plurality of adjacent curvilinear channels forming lanes with upstanding sidewalls, including an inner lane and an outer lane; and (b) a plurality of discrete sealed microcartridges with substantially rigid bodies disposed in the first travel path, each comprising a pre-metered (typically dose) amount of dry powder, the microcartridges being configured to slidably advance along the first travel path toward an inhalation chamber that merges into an inhalation output port. In operation, at least one microcartridge is held in the inhalation chamber to release the dry powder therein during inhalation. |
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| subjects | ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR BOTTLES, JARS OR SIMILAR CONTAINERS CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS CONVEYING DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISEPROVIDED FOR HANDLING THIN OR FILAMENTARY MATERIAL HUMAN NECESSITIES HYGIENE LIQUID HANDLING MEDICAL OR VETERINARY SCIENCE OPENING, CLOSING PACKAGES PACKAGING ELEMENTS PACKING PERFORMING OPERATIONS STORING TRANSPORTING |
| title | Methods of operating dry powder inhalers having spiral travel paths with microcartridges of dry powder |
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