Airon pNeuton A, Operator'S Manual

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pNeuton Ventilator 7 - 6
expiratory time of the ventilator. This flow of gas
helps to establish the desired CPAP level by
balancing flow with the pressure generated on the
expiratory valve by the CPAP system.
2. The continuous flow of gas also establishes the
flow sensitivity to spontaneous breathing efforts. If
the patient's inspiratory flow demand exceeds the
continuous flow of gas, additional flow will be added
to meet patient demand. There is no sensitivity
adjustment to this system. The CPAP system will
automatically meet the needs of the patient, greater
than 100 L/min, by attempting to maintain the
balance between flow and pressure at the
expiratory valve.
3. The PEEP / CPAP control is calibrated to the
dynamics of Airon Corporation disposable patient
circuit. Using this circuit will insure proper
operation and the full 0 to 20 cm H
2
O PEEP /
CPAP range.
Oxygen Delivery System
With the ventilator driven by 100% oxygen as the source
gas, the ventilator can be set to deliver 65% or 100%
oxygen. There are two independent systems within the
ventilator that determine oxygen concentration. The
following section describes how these systems operate.
Mandatory Breaths
The % Oxygen control determines the oxygen
concentration of the mandatory breaths that enter the
patient circuit at the Patient Connection. When set for
65%, an internal high flow venturi system entrains ambient
air to decrease the F
I
O
2
while maintaining the correct tidal
volume. The high flow venturi provides stable performance
up to the maximum operating pressure (75 cm H
2
O) of the
ventilator.