18
2
Features
2.1 Intended Use
FlexiMag Max
’s ventilator family has been developed to provide invasive and non-invasive ventilatory
support with complete ventilatory monitoring for neonatal, pediatric and adult patients with impaired respiratory
function in postoperative intensive care units in post-anesthetic recovery rooms (RPA), or for in-hospital
transport.
2.2 Principle of Operation
FlexiMag Max is a family of a micro processed electronic lung ventilators whose principle of operation
is based on the integration between specific modules:
•
Pneumatic module (manifold)
•
Electronic Control Module
•
Electronic interface module
At the entrance of the pneumatic module, two valves regulate the pressure of the gases coming from
the hospital network or cylinders, trying to assure a suitable range to the equipment.
Together with these regulating valves, there are microswitches or limit switches that constantly monitor
the gas pressure, so that the insufficiency or absence of pressure of one or both gases is immediately indicated
by a priority alarm.
Subsequently, electronically controlled air
1
and O
2
proportional valves regulate the flow of gases
accurately to ensure concentration and volume appropriate to each situation.
For the models Fleximag Max 300 and Fleximag Max 700, the ventilator relies on the FlowAir system
2
,
consisting of a turbine to electronically control the flow of air.
After their respective flows are adjusted, the gases are mixed to make the measurement of the O
2
concentration and the measurement of the resulting flow.
The O
2
concentration is obtained through a galvanic cell or optionally, a paramagnetic cell by indirect
contact with the gas of the patient, through the passage of gas in the sensor.
1
Only for Fleximag Max 500 and Fleximag Max 700 models
2
Only for Fleximag Max 300 and Fleximag Max 700 models