Measurement Principle - PULOX PO-210B Mode D'emploi

Instructions to User
This Fingertip Pulse Oximeter is a kind of innovated medical device with non-invasive and continous
features for artery SpO2 and PR detection. Being portable, it is able to measure SpO2 and PR values
quickly and precisely. This product is medical device, which can be used repeatedly.
General Description
Haemoglobin Saturation is the percentage between the capacity of Oxyhemoglobin (HbO2) that
compounded with oxygen and that of all combinativable haemoglobin (Hb) obin (HbO2) in blood. In
other words it is the saturation of Oxyhemoglobin in blood. It is a very important physiological
parameter for Respiratory and Circulation Systems. Many respiratory diseases could reduce
haemoglobin saturaion in human blood. Moreover, factors such as Automatic Organic Regulation
Malfunction caused by anaesthesia, trauma resulted from major operation and some medical
examination can also cause problems in oxygen supply, which might reduce human haemoglobin
saturation. As a result, such symptoms as megrim, vomiting and asthenia might appear to patients.
Hence, it is very important to know haemoglobin saturation of patient timely in clinical medical aspects.
The Fingertip pulse oximeter features in small volume, low power consumption, convenient operation
and portability. It is only necessary for patient to put one of finger into fingertip photoelectric sensor for
diagnosis, and the display screen will directly show the measured value of hemoglobin saturation. It has
been proved in clinical experiments that it possesses rather high precision and repeatability.

Measurement principle

The principle of the oximeter is as follows: An experience formula of data process is established by
exerting Lambert Beer Law according to Spectrum Absorption Characteristics of Reductive Hemoglobin
(R Hb) and Oxyhemoglobin (O2 Hb) in glow and near-infrared zones. Operation principle of the
instrument is to combine Photoelectric Oxyhemoglobin Inspection Technology with Capacity Pulse
Scanning and Recording Technology, so that two lights with different wavelength (660nm glow and
905nmnear-infrared light) can be focused onto human nail through perspective clamp finger-type
sensor. Then measured signal can be obtained by a photosensitive element, information acquired
through which will be shown on two groups of LEDs through
process in electronic circuits and microprocessor.
Diagram of Operating Principle
1. Infrared-ray receiving tube
2. Infrared-ray transmitting tube
Precautions for Use
1. Do not use the pulse oximeter together with MRI or CT equipment.
2. Explosion hazard: Do not use the pulse oximeter in an explosive atmosphere.
3. The pulse oximeter is intended only as an adjunct in patient assessment. Doctors should make the
diagnosis in conjunction with clinical manifestation and symptoms.
4. Check the pulse oximeter sensor application site frequently to make sure that the circulation and
skin integrality of patient are under good condition.
5. Do not stretch the adhesive tape while applying the pulse oximeter sensor. This may cause
inaccurate reading or skin blisters.
6. Please read the manual carefully before operation.
7. Prolonged use or the patient's condition may require changing the sensor site periodically. Change
sensor site and check skin integrality, circulatory status and correct alignment at least every 2 hours.
8. Inaccurate measurements may be caused by autoclaving, ethylene oxide sterilizing, or immersing
the sensors in liquid.
9. Significant levels of dysfunctional hemoglobins (such as carboxyl hemoglobin or methemoglobin)
may cause inaccurate reading.
10. Intravascular dyes such as indocyanine green or methylene blue may cause inaccurate reading.
Novidion GmbH
Fuggerstr. 30 • 51149 Köln
Tel.: +49 (0) 2203 / 9885 200
Fax: +49 (0) 2203 / 9885 206
www.pulox.de • Mail: info@novidion.de
EN