Patent ID: 6164276
Filing Date: 2000-12-26
Classification: A61F,A61M

Abstract:
A respiratory therapy apparatus delivering a pulsed dose of nitric oxide gas to a patient, said apparatus having an alarm system and comprising:conduit means connecting said respiratory therapy apparatus to a source of nitric oxide gas under pressure,means to establish a predetermined desired dose of nitric oxide gas to be delivered along the conduit means to the patient during each inhalation,sensing means for sensing the initiation of an inhalation of the patient,delivery control means coupled to said conduit means and responsive to said sensing means sensing an inhalation of the patient to deliver a pulsed dose of nitric oxide gas along the conduit means to the patient during each inhalation of the patient,a control means for controlling the delivery control means to deliver the dose of nitric oxide gas,a measurement means to detect a fault by measuring the volume of the delivered pulsed dose, comparing the measured volume against the desired volume of the dose, and detecting a fault when the measured volume is greater or less than the desired dose volume be a given amount;an alarm to alert the user of a fault condition, and means to activate said alarm when said measurement means has detected a fault.