Medical devices in the nature of inhalers used to measure patient inhalation effort and to train patients in personal inhaler use, medical devices in the nature of inhalers with features for measuring respiratory effort and facilitating the training of patients in use of inhalers, medical devices in the nature of inhalers with features for the measurement of respiratory patterns of patients, medical devices included as a component of inhaler systems for medical use, namely, patient monitors for monitoring and measuring respiration [, medical devices included as a component of inhaler systems for medical use, namely, devices used to indicate dosing of medication, medical devices included as a component of inhaler systems for medical use, namely, devices used to transmit and receive data regarding inhalation, respiration, or dosage ]