Finger oximeter is based on reduced hemoglobin, oxygenated hemoglobin in the red light and near red light region of the absorption spectrum characteristics based on the use of LambertBeer's law to establish the empirical formula for data processing. The working principle of finger oximeter adopts the photoelectric oximetry detection technology combined with the volumetric pulse tracing technology, using two beams of different wavelengths of light (660nm red light and 940nm near-infrared light) to irradiate the tip of human fingernail through the see-through clip finger sensor and the measurement signal is obtained by the photosensitive element, and the acquired information is processed by the electronic circuits and the microprocessor, and the results are displayed by the two groups of LEDs.
Low blood oxygen can lead to dizziness, weakness, vomiting and other symptoms, and in severe cases, can be life-threatening. Therefore, to understand the patient's body oxygen saturation is conducive to help doctors find the problem in a timely manner, in the field of clinical medical care has a very important significance, the role of finger-type oximeter is to accurately help the patient to measure the human body oxygen saturation. Clinical trials have shown that finger oximeters have a high degree of accuracy and repeatability.
How to use finger oximeter
1, the first time you use it, press the Reset button, the LCD screen shows standby status.
2, press to open the mouth of the clip. Left hand or right hand middle finger, into the work bin, you can see the infrared light in the work bin.
3, after the finger and the work bin completely contact, LCD display the detection process. (Note that, into the detection state, to maintain the stability of the inspected finger, do not shake up and down, left and right).
4, 30 seconds later, release the mouth, the finger out of the work chamber, LCD fixed test results. Which the top of the screen % SpO2 for blood oxygen indicators. Min is the pulse rate at the bottom of the screen.
Finger oximeter normal value
From the medical analysis, blood oxygen content (%SpO2) is greater than or equal to 95, for the normal indicators; pulse rate (/Min) in the 60 - 100 between, for the normal indicators. If the values detected by the finger oximeter do not meet the above two major indicators, please dry different time points were monitored 2-3 times, to maintain 2-3 days of continuous monitoring, if the value is still not in line with the standard value, it is recommended that you go to the hospital for detailed diagnosis.
Warm reminder: Before and after each test, please use medical alcohol to clean the rubber of the oximeter and your fingers. (The rubber in the finger oximeter is medical rubber, which is non-toxic and harmless to human skin).