Description of ventilator 9
2.2 Owner/operator and user qualification
As an owner/operator or user, you must be familiar
with the operation of this medical device. Observe
the legal requirements for operation and use (in Ger-
many, the regulations governing owner/operators of
medical devices apply in particular). Basic recom-
mendation: get a person authorized by Weinmann
to provide you with proper instruction about the
handling, use and operation of this medical device.
2.3 Ventilation function
MEDUMAT Standard operates within a pressure range
of 2.7 to 6 bar and at a flow rate of not less than
70 l/min O
2
. It has an in-built power pack.
It uses high-pressure, medicinal-grade oxygen. An
external pressure reducer brings this down to the re-
quired operating pressure. The oxygen supply is fed
in at input valve
10.
The ventilation frequency is infinitely variable. Both
this and the inspiration/expiration ratio of 1:1.67 are
regulated by internal electronic control mechanisms.
The gas for inspiration flows along the hose and
through the patient valve and either the mask or the
tracheal tube into the patient’s airways. The patient
valve is fitted with a lip membrane that enables ex-
pired gas to be conducted away through the expira-
tion tube.
At the normal
Air Mix setting atmospheric air is ad-
mixed to give an O
2
-concentration of between 55%
and 85% at 10 mbar ventilation pressure (note
“11.2 O2 content when using Air Mix“ on page 62).
No Air Mix
Air Mix
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