Innovo iP900AP, Руководство пользователя

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9
Chapter 2 About This Product
2.1 Overview
SpO
2
stands for peripheral capillary oxygen saturation. Oxygen
saturation is defined as the ratio of oxyhemoglobin (HbO
2
) to the
total concentration of hemoglobin (i.e. Oxyhemoglobin +
reduced hemoglobin) present in the blood. It is an important
physiological parameter involved in respiration and circulation.
The Pulse Oximeter feature herein is small, portable,
non-invasive and easy to use. The user only needs to insert a
finger into the chamber to measure his/her SpO
2
level and pulse
rate.
2.2 Working Principles
Oxygenated blood absorbs light
preferentially at 905nm (near
infrared
light), whereas
deoxygenated blood absorbs
light preferentially at 660nm
(red light). A pulse oximeter
works by passing a beam of red
and infrared light through a pulsating capillary bed and then
Light Emitting
Diode
Light beams
sensor