| 摘要 |
<p>A portable, battery operated, inhalation device for administration of medicament in the form of aerosolised fine particles or droplets of liquid or suspension to the respiratory system of a patient, the device comprising a housing defining a chamber in communication with a patient port in the form of a mouthpiece or nasal adaptor, medicament aerosolisation means for forming an aerosol of medicament in the chamber, control means to actuate the medicament aerosolisation means and a sensor which measures the air flow rate during respiration through the patient port and provides an electrical signal to the control means which varies continuously with said flow rate, said electrical signal being used by the control means for one or more of the following functions: (i) to calibrate the device such that the medicament aerosolisation means is actuated at a precise, pre-determined flow rate, (ii) to monitor one or more of the following parameters: (a) flow rate at different times during respiration, (b) rate of change of flow rate during respiration, (c) respired volume during respiration, and activate the aerosolisation means when a pre-determined inspiration parameter is attained.</p> |
