| 摘要 |
<p>A system for providing nitric oxide therapy to a patient, the system having a source of NO containing gas, a source of O2 containing gas, at least one gas monitor and an electrically operated valve for controlling the amount of NO containing gas administered to the patient, a therapy CPU providing an electrical signal for controlling the position of the electrically operated valve and for continuously monitoring the value of the electrical signal provided to the electrically operated valve, the improvement comprising a means to activate a calibration system to effect the calibration of the at least one gas monitor whereby the at least one gas monitor is inactivated from monitoring a gas, the means to activate the calibration system providing a signal to the therapy CPU to cause the CPU to detect the value of the electrical signal then being provided to the electrically operated valve by the therapy CPU, means to determine limits of change of the electrical signal with respect to the detected signal value and means to continuously monitor the electrical signal to the electrically operated valve and to provide an alarm signal wherever the monitored signal exceeds the determined limit. <IMAGE></p> |
