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The resulting flow measurement is performed by a high precision internal flow sensor, which
guarantees an adequate reading, without the need for recalibrations and has mass flow technology, whose
reading is independent of temperature or pressure.
The flow expired by the patient is measured by an external sensor, of the thermal type or hot wire
anemometer, connected to the expiratory valve. Optionally, this flow can be read through a proximal flow
sensor, connected to the patient's "Y" output, whose measurement is based on the pressure differential
between two points.
The system pressures are taken through points in the pneumatic module, which are connected to the
transducers in the electronic control module. The maximum ventilator pressure is guaranteed by the control
system, which monitors the pressure in the system through transducers by setting the PR Limit or PR Control.
The pressure can be relieved by expiratory valve opening and overpressure.
All these flow and pressure measurements are converted into digital signals by the electronic control
module and serve to feed the control algorithm uninterruptedly, ensuring a gradual and safe adjustment of the
ventilatory process.
The pneumatic module also includes safety valves, such as the overpressure valve and the anti-
asphyxiation valve.
The input and output of information are processed by the electronic interface module. The information
entered by the operator, via touch screen or via button, is translated, interpreted and sent to the electronic
control module by serial communication, through secure protocols. Through this information the ventilator
establishes the appropriate parameters to act in each different situation.
As soon as it receives information, the control module also sends it to the interface module. All
measured or calculated data are also sent, via serial, to the interface module. It is up to this module to treat
and display this information to the operator in a friendly and intuitive way.
All risk situations that require operator intervention are analyzed by the control module and sent to the
interface module that then issues, according to the degree of risk, the necessary alarms or alerts.
Fleximag Max forms an electromedical system with the humidification system.
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Parts and pieces indicated in this manual may be used in the patient's environment.
