User's Manual

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Keep dry
This side up
Range of storage temperature
Stacking level
Range of storage humidity
Range of atmospheric pressure
Complies with the European
Medical Device Directive
(93/42/EEC and amended
Directive 2007/47/EC.
Notified Body is SGS
Belgium NV
Disposal in accordance with Directive
2002/96/EC (WEEE)
Authorized representative in
the European Community.
The European representative
is: Shanghai International
Holding Corp. GmbH
(Europe)
Batch and serial number
Follow operating instructions
2 Overview
2.1 Product Introduction
2.1.1 Measurement Principle
Blood oxygen saturation, a key parameter of physiological circulatory system, means the percentage of
oxyhemoglobin in total hemoglobin. Many heart diseases or respiratory system diseases may cause the decrease of
blood oxygen saturation in human body. Besides, the automatic adjustment function of the body caused by
anesthesia, major surgical trauma, and some injuries resulting from medical examination may cause the abnormal
oxygen supply of the patient, which may lead to the decrease of blood oxygen saturation, resulting in dizziness,
weakness, vomiting and other symptoms, and even giving rise to life-threatening symptoms in serious case.
Therefore, knowing the patient’s oxygen saturation in time is very important for doctors to detect problems in a
timely manner and it is of great significant in the field of clinical medicine. The equipment applies the continuous
and noninvasive quantitative method of pulsating blood oxygen. It measures the flux arriving at the photodetector
of the sensor after the specific wavelength of light emitted from the sensor’s light source is absorbed by the
hemoglobin oxyhemoglobin in the patient’s tissue, and then obtains the blood oxygen saturation and pulse rate.