User's Manual

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Fig. 4 Diagram to Wear Equipment
4.3 Measurement Precautions
(1) Please check the device before using, and confirm that it can work normally.
(2) The SpO
2
sensor and photoelectric receiving tube should be arranged in a way with the subject’
sarteriole in a position there between.
(3) The SpO
2
sensor should not be used at a location or limb tied with arterial canal or blood pressure cuff
or receiving intravenous injection.
(4) Do not fix the SpO
2
sensor with adhesive or else it may result in venous pulsation and inaccurate.
(5) Put the proper finger into the Pulse Oximeter. The measured value may be affected if the finger is too
cold or thin.
(6) The finger shall be inserted to the finger clip cavity deeply enough, and otherwise, the measured value
may be inaccurate. Ensure the light between the photoelectric receiving tube and the luminescent tube of the Pulse
Oximeter shall passes through the small artery bed of the finger of the subject.
(7) Keep the place where the light path passes free from light barriers such as adhesive tape to ensure the
accuracy of parameter measurement.
(8) The product is suitable for children and adults with finger thickness of 7mm ~ 25.4mm.
(9) The measurement will be affected by excessively strong ambient light, including but not limited to
fluorescent lamp, double Ruby lamp, infrared heater, direct sunlight, etc.
(10) The measurement accuracy will be affected if the subject performs strenuous activities.
(11) The interference of electrical surgical equipment may affect the measurement accuracy.
(12) The nail on the test site shall be free from nail polish and other cosmetics. To ensure measurement
accuracy, remove nail polish or other cosmetics if any.
(13) The measured value of blood oxygen saturation may be inaccurate in case there is high content of the
dye dilution drugs (such as methylene blue, indigo cyanide green, acid indigo carmine), carbon monoxide
hemoglobin, methemoglobin or Thiohemoglobin and others in the body of the subject.
(14) Dopamine, Procaine, Procaine, Lidocaine, Buzocaine and other drugs will cause serious deviation in
the measurement of blood oxygen saturation.
(15) The measured value of blood oxygen saturation is for reference only to anaemic hypoxia and toxic
hypoxia. Some patients with severe anemia may still have higher measured value of blood oxygen saturation due
to physiological reasons.
As the measure is taken on the basis of arteriole pulse,substantial pulsating blood flow of subject is required. For a
subject with weak pulse due to shock, low ambient/body temperature, major bleeding, or use of vascular
contracting drug, the SpO
2
waveform (PLETH) will decrease. In this case, the measurement will be more sensitive
to interference.
Display screen