Principle of oximeter

The oximeter is usually called pulse oximeter, which can mainly measure these indexes: one is pulse; The other is blood oxygen saturation, which is a commonly used instrument for noninvasive measurement of blood oxygen state in clinic. Initially used in ICU, intensive care unit and other critically ill patients. Now it is very common to have not only some medical supplies, but also some household items, all of which are very cheap. Some 100 yuan can buy one, which is more convenient and practical, and you can see it in real time when you clip it on your finger. For example, the patient needs oxygen inhalation, and the oxygen inhalation can also be seen through the pulse oximeter. What standard is safe is very convenient for some patients with hypoxia in clinic.