How Oximeter For Home works

Oximeter For Home is your good choice.
The original oximeter was developed by Millikan in the 1940s. It monitors the ratio of oxygen-carrying hemoglobin to non-oxygen-carrying hemoglobin in the arteries. A typical oximeter has two light-emitting diodes. The two LEDs face the patient’s part to be tested-usually the fingertip or earlobe. One diode emits a light beam with a wavelength of 660 nanometers, and the other emits 905, 910 or 940 nanometers. The absorption rate of oxygen-containing hemoglobin for these two wavelengths is very different from that of oxygen-free hemoglobin. Using this property, the ratio of the two hemoglobins can be calculated. The testing process usually does not require blood to be drawn from the patient. The usual oximeter can also display the patient's pulse. According to the Beer-Lambert law, the functional relationship between the ratio R/IR and the arterial blood oxygen saturation (SaO2) should be linear, but because biological tissue is a complex optical system with strong scattering, weak absorption, and anisotropy [2~ 4). It does not completely conform to the classic Beer-Lambert law, which leads to the establishment of a mathematical model that expresses the relative change of the red light and infrared light absorbance (R/IR value) and the relationship between the arterial blood oxygen saturation (SaO2) difficult. The corresponding relationship between R/IR and SaO2 can only be determined by experimental methods, that is, the calibration curve. Most pulse oximeter manufacturers use experimental methods to obtain empirical calibration curves to complete the pre-calibration of the products before they leave the factory. Oximeter For Home is your good choice.