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2.3 Uses SOMNOsoft +
SOMNOsoft + is a CPAP device for treating sleep-
related respiratory disorders.
SOMNOsoft + generates positive airway pressure
(PAP).
The softPAP mode increases patient comfort by
means of a brief pressure reduction during the tran-
sition from inhalation to exhalation.
SOMNOsoft + recognises respiratory events. This
permits efficient therapy control.
During sleeping, the patient's airways are braced
by the air pressure generated.
2.4 Function of SOMNOsmart 2
SOMNOsmart 2 works on the principle of an
electrically powered flow generator delivering an
electronically controlled constant pressure level.
A radial fan draws in ambient air through a filter
and conveys it to the device outlet port. From here
the air flows through the hose system and the mask
to the patient.
An oscillation generator creates a slight sinusoidal
pneumatic oscillation in the air flow produced by
the device.
The airway and oscillation pressure is registered
via the pressure measurement tube in the mask.
The current oscillation pressure reading is
compared with an average value and the
preceding values. This evaluation of the oscillation
pressure makes it possible to identify any
significant change in airway resistance and hence
to increase or reduce the therapy pressure via the
flow generator.
The pressure present in the mask is shown in the LC
display. The microprocessor-controlled flow
generator regulates the pressure at the value
determined.
The device also records a respiratory flow signal
that can be output to a PSG system or read off with
the aid of SOMNOsupport. This makes it possible
to identify apnoea, hypopnoea and respiratory
flow limitations.
Airway pressure is administered by means of a
mask.
SOMNOsoft + can be used both in CPAP mode
and in softPAP mode for individuals aged 12 years
or more.
Important!
SOMNOsoft + can reliably prevent closure of the
airways only if the therapy pressure specific to the
patient and prescribed by a physician has been
determined, e.g. in a sleep laboratory.
SOMNOsoft + is
suitable for use as a life-sup-
not
port system.
The exhalation system before the mask prevents
accumulation of CO
-enriched expired air in the
2
hose system.
Auto switch-on can be activated on the
SOMNOsmart 2. The device can then be
switched on by breathing into the mask. If there is
no pressure for about 5 seconds (e.g. because the
mask is taken off), the SOMNOsmart 2 switches
off automatically.
Following a power failure and resumption of the
power supply, the status of SOMNOsmart 2 is the
same as it was before the power failure. The
stored data remain preserved.
There are two functions designed to make it easier
to go to sleep: (soft-)start or start pressure function.
When this is switched on, the
(Soft-)start function:
pressure is adjusted to the (soft-)start pressure set by
the physician. The pressure limits then gradually in-
crease to the set values. The time taken for this in-
crease is adjustable. This function is suitable for
patients who find the high pressure unpleasant
while they are awake.
Additional function from software version 6.0:
The pressure remains at the
Start pressure function:
set value throughout the start period. At the end of
the start period, the pressure is reduced to the low-
er pressure limit. This function is suitable for
patients who find low pressure unpleasant while
they are awake, or who need high pressure quick-
ly after they have gone to sleep.
7
Description
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