Dosage counter for metered dose inhaler (MDI) systems using a miniature pressure sensor
March 14, 2016. 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 ReferencesInhaler device with counter/timer means Inhalation device with a dose-timer, an actuator mechanism, and patient compliance monitoring means Intelligent inhaler providing feedback to both patient and medical professional Specialized peak flow meter Method and apparatus for releasing a controlled amount of aerosol medication over a selectable time interval Delivery of aerosol medications for inspiration Counter attachment for product dispensers Method for correcting the drift offset of a transducer Aerosol and non-aerosol spray counter 5522378 InventorsAssigneeApplicationNo. 616152 filed on 03/14/1996US Classes:128/200.23, Pre-pressurized container holding medicament128/200.14, LIQUID MEDICAMENT ATOMIZER OR SPRAYER128/205.23Indicator structureExaminersPrimary: Millin, VincentAssistant: Deane, William J. Jr. Attorney, Agent or FirmInternational ClassA61M 011/00AbstractA method and apparatus for directly counting the number of doses expended from a Metered Dose Inhaler (MDI) medicinal delivery system. A miniature pressure sensor and microprocessor is used to detect the pressure pulse in the transfer channel of the mouthpiece of the MDI through which the inhaler dose (the prescribed mixture of aerosol propellant and medicinal drug) is released. The microprocessor processes data reflecting the dynamics of the pressure pulse and counts the number of doses administered. The microprocessor displays the counted doses (or doses remaining) on a miniature digital display. Additional information also may be provided to a user from the display or via an audible signal.Other References
Field of SearchLIQUID MEDICAMENT ATOMIZER OR SPRAYERPre-pressurized container holding medicament Indicator structure Means for sensing condition of user's body Means for indicating improper condition of apparatus Control means responsive to condition other than user's airway pressure Particulate treating agent carried by breathed gas With gas flow control means other than pivotal or removable closure Pressurized aerosol container For aerosol dispenser WITH RECORDER, REGISTER, INDICATOR, SIGNAL OR EXHIBITOR | |
