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Product Description
The pulse oximeter is an important, common device that checks oxygen saturation (SpO
2
)
and pulse rate. It is a small, compact, simple, reliable, and durable physiological monitoring
device. It contains the mainboard, OLED display, and dry batteries.
Intended Use
The pulse oximeter is a reusable device intended for intermittent checks of oxygen
saturation and pulse rate for adults in a clinical environment. This medical device is not
intended for continuous monitoring.
Applicable Users and Scope
The pulse oximeter is intended for monitoring adults. It is used in clinical settings, outpatient
departments, and sickrooms. It can also be used in recovery and healthcare organizations
as well as community medical treatment centers.
Contraindications
The pulse oximeter only applies to adults. It is not suitable for injured skin tissue.
Measurement Principle
Arterial oxygen saturation is measured via a method called oximetry. It is a continuous,
non-invasive method based on the different spectra absorption of hemoglobin and
oxyhemoglobin (called the spectrophotometer principle).
The data processed by the device is obtained via a formula based on the Lambert Beer
Law, according to the spectrum absorption characteristics of hemoglobin (Hb) and
oxyhemoglobin (HbO
2
) in glow and near-infrared zones. The instrument operates on the
principle of Photoelectric Oxyhemoglobin Inspection Technology. Two beams of different
wavelengths of light (666nm visible red light and 905nm near-infrared light) can be focused
on the human nail tip via emitters by adopting the Capacity Pulse Scanning and Recording
Technology. It will obtain a measured signal via a photosensitive element. The amount of
light absorbed relates to the amount of oxygen in the blood during these pulses. The ratio
of the two absorbed spectrums can be calculated via the microprocessor, and the results
are compared with the saturation value in the memory. This is how the blood oxygen
saturation value is obtained.
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