What is an oximeter?

Oxygen saturation probe is an instrument for measuring oxygen concentration in human blood, namely blood oxygen saturation. The sensor is composed of two luminous tubes and a photocell, which can be known in the blood in surgery or in the monitoring of critical patients. Oxygen content.

product description

With the continuous development of modern medical technology and related disciplines, medical monitoring instruments have become an indispensable instrument for medical electronic instruments and play an increasingly important role in hospitals. The use of monitoring instruments not only reduces the labor of medical personnel, but also improves the efficiency of nursing work. More importantly, it enables doctors to understand the condition at any time, and can handle them in a timely manner when emergencies occur, thus improving the quality of care. In the monitoring of physiological parameters, in addition to the ECG, blood pressure, etc., the determination of oxygen concentration in human blood, that is, blood oxygen saturation is also very important in clinical practice. In the surgical care or monitoring of critically ill patients, it is necessary to avoid oxygen deficiency in the patient and to know the oxygen content in the blood in a timely manner.

Measuring principle

Oxygen saturation concept and measurement principle

O2 transport, O2 is mainly in the form of hemoglobin binding in red blood cells, the amount of physical dissolution is very small, per 100ml of blood, the maximum amount of hemoglobin bound oxygen called oxygen capacity OCP, blood red and white actually combined oxygen amount of oxygen content OCN Oxygen saturation is the ratio between the two, ie. In general, the SPO2 range is 92% to 98%. The basic principle of blood oxygen saturation measurement in body is photoelectric. Arterial blood vessels usually pulsate continuously. During systole and diastole, with increasing or decreasing blood flow, absorbance of light in different degrees, the ratio of light absorption during systole and diastole is converted into blood oxygen saturation measurement value, and blood oxygen saturation Electronic principle of measurement.