Microlife OXY 200 Mode D'emploi page 5

cannot be held liable for damage caused by incorrect
application.
Precaution: Do not self diagnose or treat based on
measurement results, please always consult a doctor. The
product has no contraindications. The device has no side-
effects if used correctly and residual risk is acceptable.
 Never immerse this device in water or other liquids.
For cleaning please follow the instructions in the
« Cleaning and disinfecting» section.
 Do not use this device if you think it is damaged or
notice anything unusual.
 Never open this device.
 This device comprises sensitive components and must
be treated with caution. Observe the storage and oper-
ating conditions described in the «Technical specifica-
tions» section.
 Protect it from:
 water and moisture
 extreme temperatures
 impact and dropping
 contamination and dust
 direct sunlight
 heat and cold
 The function of this device may be compromised when
used close to strong electromagnetic fields such as
mobile phones or radio installations and we recom-
Microlife OXY 200
mend a distance of at least 1 m (according to 60601-1-
2 table 5). In cases where you suspect this to be
unavoidable, please verify if the device is working prop-
erly before use.
 Do not use the device in an MRI or CT environment.
 This device is not intended for continuous monitoring.
 Do not sterilize this device using autoclaving or
ethylene oxide sterilizing. This device is not intended
for sterilization.
 If the device is not going to be used for a prolonged
period the batteries should be removed.
Ensure that children do not use this device unsu-
pervised; some parts are small enough to be swal-
lowed. Be aware of the risk of strangulation in
case this device is supplied with cables or tubes.
Use of this device is not intended as a substitute
for a consultation with your doctor.
2. General description
Oxygen saturation indicates the percentage of hemoglobin
in arterial blood that is loaded with oxygen. This is a very
important parameter for the respiratory circulation system.
Many respiratory diseases can result in lower oxygen satu-
ration within human blood.
Following factors can reduce oxygen saturation: Auto-
matic regulation of organ dysfunction caused by anes-
thesia, intensive postoperative trauma, injuries caused by
some medical examinations. These situations may result in
light-headedness, asthenia and vomiting. Therefore, it is
very important to know the oxygen saturation of a patient
so that doctors can detect problems in a timely manner.
3. Measurement principles
Principle of this fingertip pulse oximeter: A mathemat-
ical formula is established making use of Lambert Beer
Law according to spectrum absorption characteristics of
deoxygenated hemoglobin (Hb) and oxyhemoglobin
(HbO2) in red and near-infrared zones.
Operation principle of this device: Based on full digital
technology, the fingertip pulse oximeter non-invasively
measures the actual content (oxygen saturation) of oxyhe-
moglobin (HbO2) in arterial blood using the optical trans-
mittance method. The fingertip pulse oximeter measures
the blood oxygen saturation and pulse rate of a human
body via finger artery. The fingertip pulse oximeter works
by applying a sensor to a pulsating arteriolar vascular bed.
The sensor contains a dual light source and photo detector.
The one wavelength of light source is 660 nm, which is red
light; the other is 905 nm, which is infrared-red light. Skin,
bone, tissue and venous vessels normally absorb a
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