The Principle And Use Of Medical Finger Pulse Oximeter


Now it is more and more popular in household medical devices. Medical Finger Pulse Oximeter is easy to use, and the elderly can operate it quickly; blood oxygen measurement no longer requires blood collection. Medical Finger Pulse Oximeter can easily know its blood oxygen level and pulse by gently putting a finger on the finger. At home, you can check your health anytime, anywhere.

Why do you know your blood oxygen level by putting a Medical Finger Pulse Oximeter on your finger? Let's introduce the working principle of Medical Finger Pulse Oximeter.

We all know that the role of hemoglobin is to carry oxygen to all parts of the body. We call the oxygen content of hemoglobin at any time as blood oxygen saturation. Medical Finger Pulse Oximeter measures this blood oxygen saturation. Hemoglobin has a state of carrying oxygen, of course, there is also a no-load state, we call the hemoglobin carrying oxygen is oxyhemoglobin, and the no-load hemoglobin is called reduced hemoglobin.

Oxygenated hemoglobin and reduced hemoglobin have different absorption characteristics in the visible and near infrared spectrum. Reduced hemoglobin absorbs more red frequency light and absorbs less infrared frequency light; while oxyhemoglobin absorbs less red frequency light and absorbs more infrared frequency light. This difference is the most basic basis of Medical Finger Pulse Oximeter.

After a series of calculations, Medical Finger Pulse Oximeter displays blood oxygen saturation data on the display.

Medical Finger Pulse Oximeter is not complicated to use. For the first time to use Medical Finger Pulse Oximeter, first press the Reset button, the screen will show the preparation status. Then press the opening jaw. Put your left or right middle finger into the working compartment. At this time, you can see the infrared light in the working compartment. You should pay attention: your fingers should not be crooked, your hands should not be wet, and there should be no foreign objects on the nail surface (such as nail polish). After the finger and the work chamber are fully contacted, the LED displays the detection speed. When entering the detection state, care should be taken to maintain the stability of the finger under test. Do not shake it up, down, left, or right. It is best to place your hand on the table steadily and adjust your breathing evenly.