Patent ID: 8820316
Filing Date: 2014-09-02
Classification: A61M

Abstract:
1. A drug delivery apparatus comprising: a drug delivery device for selectively delivering drug-laden air or air not laden with the drug; a sensor for monitoring a breathing pattern of a patient; a controller arranged to control the drug delivery device based on a length of at least one previous inhalation of the patient to deliver drug-laden air in pulses which begin when the patient is monitored by the sensor to begin inhalation, the pulses having a duration which is adjusted by the controller on the basis of the monitored breathing pattern of the patient and the length of the at least one previous inhalation, wherein the pulse duration is determined based upon a tidal volume and an end volume of the patient, and wherein if a monitored inhalation is not suitable for drug delivery the controller controls the drug delivery device to abort a pulse corresponding to the monitored inhalation; a feedback indicator which indicates to the patient whether a pulse of drug-laden air is currently being delivered; a dose calculator which calculates a dose delivered to the patient; an indicator which indicates to the patient when a desired dose has been delivered; and a drug formulation in which NaCl and tobramycin are dissolved in a solvent, wherein a delivery efficiency of the drug formulation is at least 80 percent.