Device and method for monitoring adherence to inhaled therapy

A device for monitoring adherence of a patient to a prescribed regimen, the device comprising:

• a pulmonary delivery device comprising a pressurized cartridge for accommodating a drug according to the prescribed regimen and a nozzle through which the drug is released;
• an adapter comprising an inlet, an outlet and a chamber between the inlet and outlet, wherein the inlet is in fluid communication with the nozzle for admitting the drug into the chamber, wherein the chamber is defined by a hollow wall;
• a dispenser coupled with the adapter for allow the drug to enter the dispenser from the chamber;
• and
• at least one sensor for detecting a parameter change associated with a movement of the drug from the pulmonary delivery device to the dispenser and generating a feedback signal based on the parameter change, wherein the feedback signal is processed for generating an indicator signal representative of delivery of the drug to the patient.