MONITORING RESPIRATORY PARAMETERS THROUGH ULTRASONIC MEASUREMENTS INDICATING FLOW CHANGES IN RESPIRATORY DRUG DELIVERY DEVICES

摘要

Systems and methods for delivering medicament to a subject use one or more sensors to generate signals that represent characteristics of the ultrasonic energy emitted into or by a respiratory medicament delivery device. Parameters based on these signals indicate energy amplitude in one or more frequency ranges. Such parameters can be used to determine respiratory parameters, patient adherence, and/or other parameters.