Medical devices in the nature of inhalers, or inhaler accessory devices used to measure patient inhalation effort and to train patients in personal inhaler use; medical devices in the nature of inhalers, or inhaler accessory devices with features for measuring respiratory effort and facilitating the training of patients in use of inhalers; medical devices in the nature of inhalers, or inhaler accessory devices 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