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EN
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Dysfunctional hemoglobin
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Artificial nails or fingernail polish
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Finger is too cold
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Patients with abnormal circulation of finger endings caused by COPD
2. Basics
The pulse oxygen saturation is the percentage of HbO2 in the total Hb in the blood, so-called the O2
concentration in the blood. It is an important bio-parameter for the respiration. A number of diseases
relating to respiratory system may cause the decrease of SpO2 in the blood, furthermore, some other
causes such as the malfunction of human body's self-adjustment, damages during surgery, and the
injuries caused by some medical checkup would also lead to the difficulty of oxygen supply in human
body. And the corresponding symptoms would appear as a consequence, such as vertigo, impotence,
vomit etc. Serious symptoms might bring danger to human's life. Therefore, prompt information of
patients SpO2 is of great help for the doctor to discover the potential danger, and is of great importance
in the clinical medical field.
2.1 Principle
Principle of the oximeter is as follows: An experience formula of data process is established taking use of
Lambert Beer Law according to Spectrum Absorption Characteristics of Reductive Hemoglobin (Hb) and
Oxyhemoglobin (HbO2) in glow & near-infrared zones. Operation principle of the device is: Photoelectric
Oxyhemoglobin Inspection Technology is adopted in accordance with Capacity Pulse Scanning &
Recording Technology. So that two beams of different wavelength of lights can be focused onto human
nail tip through perspective clamp finger-type sensor. Then measured signal can be obtained by a
photosensitive element, information acquired through which will be shown on screen through
treatment in electronic circuits and microprocessor.
Figure 1 Oximeter schematic diagram
2.2 Introduction
2.2.1 Intended Use
The Pulse Oximeter is a portable, convenient, non-invasive device, used for monitoring arterial
hemoglobin oxygen saturation (SpO2) and pulse rate. We recommend index finger, middle finger and
ring finger as suitable positions for measurement. It is intended for spot-checking or attended care in
Home Health Care and Medical Facility.
Warning
This pulse oximeter is intended for use by clinical professionals and under their guidance. It must only be
used by persons who have adequate training in its use. Anyone unauthorized or untrained must not
perform any operation on it.
Cautions
This pulse oximeter is intended for use in hospital, clinical institution, healthcare community.
The pulse oximeter is NOT designed for newborn and infant. It is intended for use on fingers with a
thickness of 7.64mm – 11.19mm (0.3”-0.44”). This is the distance between the fingernail (top) and
the finger pad (bottom).
Notes
The probe is the hole in the middle of the equipment where the finger is inserted.
The probe is the applied part of the equipment.
2.2.2 Features
The pulse oximeter is small in volume,light in weight and easy to carry.
One button and easy to operate.
There are three modes: power off, sleep and measure.
Automatically turning into sleep mode within 8 seconds after there is no signal.
Notes
Press the operating button to activate oximeter (measure mode) from sleep mode.
Power off after removing batteries.