Patent ID: 8960189
Filing Date: 2015-02-24
Classification: A61M

Abstract:
1. A system configured to monitor treatment of a subject with a metered dose inhaler, the system comprising a sensor configured to generate one or more output signals conveying information related to ultrasonic energy generated by a dispensation of a dose of medicament from an inhaler; and a processor configured to receive the one or more output signals generated by the sensor, and to monitor one or more aspects of the dispensation of the medicament based on the information related to the ultrasonic energy generated by the dispensation of the dose of medicament that is conveyed by the one or more output signals, wherein the ultrasonic energy generated by the dispensation of the dose of medicament comprises an ultrasonic carrier signal modulated at a modulation frequency and wherein the information conveyed by the one or more output signals generated by the sensor enables detection of the ultrasonic carrier signal by the processor, and wherein the information on which the one or more aspects of the dispensation of the medicament is based includes the modulation frequency, and wherein monitoring of the one or more aspects of the dispensation of the medicament by the processor comprises one or more of monitoring whether a portion of the medicament remains to be dispensed, monitoring a number of doses of the medicament remaining in the inhaler, or counting a number of doses of the medicament that have been dispensed from the inhaler.