Aerosol-forming porous membrane with certain pore structure
November 16, 2018. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod and apparatus for application of eye drops Patterning of polyimide films with ultraviolet light Method of dispensing and/or a dispenser Disposable package for intrapulmonary delivery of aerosolized formulations Atomising devices and methods Disposable inhaler Systems for the intrapulmonary delivery of aerosolized aqueous formulations Systems for the intrapulmonary delivery of aerosolized aqueous formulations Disposable package for use in aerosolized delivery of drugs Disposable package for use in aerosolized delivery of drugs InventorsAssigneeApplicationNo. 192833 filed on 11/16/1998US Classes:128/203.12, Means for mixing treating agent with respiratory gas128/203.21Means broken or pierced to supply treating agentExaminersPrimary: Lewis, Aaron J.Assistant: Mitchell, Teena Attorney, Agent or FirmForeign Patent References
International ClassA61M 015/00AbstractA nozzle comprised of a thin, flexible membrane material having a plurality of pores is disclosed. In one embodiment, the pores have an unflexed exit aperture diameter in the range of about 0.5 to about 2 microns (preferably about 1 micron) and are positioned substantially uniformly in the material, preferably about 50 microns apart. The nozzle preferably has a conical or trumpet-shaped cross-section. In another aspect of the invention, the exit aperture of the nozzle is surrounded by an elevated area protruding above the substantially planar exit side of the membrane in order to prevent intrusion of liquid back into the nozzle. The nozzle can be used to form an aerosol containing a pharmaceutical composition from the exit side of the nozzle upon forcible application of the composition to the entrance side of the nozzle. This aerosol can be used to administer the pharmaceutical composition, for example, to the eye or to a selected portion of the respiratory tract. The nozzle is preferably a component of a container which holds a formulation of drug.Field of SearchMeans for mixing treating agent with respiratory gasParticulate treating agent carried by breathed gas Pocket-type draw tube having discharge aperture for air/treating agent mixture at end thereof Means broken or pierced to supply treating agent LIQUID MEDICAMENT ATOMIZER OR SPRAYER Means for sensing condition of user's body With wall-collapsing means POROUS OR EXTERNAL WICK DISCHARGE MEANS Powder dispenser Solid units successively fed to conduit from supply means (e.g., magazine, etc.) | |
