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Chapter 1: Introduction 17
Intended use
The device "TREND III" is used for non-invasive pressure-controlled breathing support.
The device is suitable for the treatment of obstructive sleep apnea in patients over 30
kg, especially when required by higher pressures and / or forms of respiratory failure.
Therapy pressure is administered via a breathing mask, which must be equipped with a
passive exhalation valve to ensure exhalation air discharge. Use of the device is intended
for home medical care and professional health care facilities such as sleep laboratories
and hospitals.
The "TREND III" is not suitable for use in motor vehicles, aircraft and helicopters.
General description of function
The blower sucks in the ambient air via a filter and transports it to the patient at a set
pressure via a leakage tube circuit. Therapy is non-invasive, provided via a breathing mask.
So that the expired air can escape, a vented CPAP mask must be used.
During therapy, oxygen can be supplied. Oxygen is either administered directly in the
mask or in the tube circuit via an adapter. When therapy is switched off, no oxygen must
not flow back into the device. This must be ensured by using an O2 safety valve.
Respiration therapy is carried out according to therapy parameters set using the control
elements. In clinic mode, various measured values can be monitored via the display in
the menu item "Monitoring".
In the event of a misconduct of the set and permanently stored parameters in the device,
visual and audible warning signals are output. If the prescribed therapy is no longer pos-
sible due to a technical error, an acoustic signal is emitted for at least 2 minutes.
The therapy data can be evaluated via the USB interface with the "easySET" PC software.