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Fingertip Pulse Oximeter A310 is a non-invasive device intended for spot checking of functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (PR). This portable device is indicated for use in adult patients in hospitals.

Fingertip Pulse Oximeter A310 is a battery powered device intended for use in measuring and displaying functional oxygen saturation of arterial hemoglobin (SpO2) and pulse rate (PR). The Finger Pulse Oximeter works by applying a sensor to a pulsating arteriolar vascular bed. The sensor contains a dual light source and photo detector. The one wavelength of light source is 660 nm, which is red light; the other is 940 nm, which is Infrared light. Skin, bone, tissue, and venous vessels normally absorb a constant amount of light over time. The photodetector in finger sensor collects and converts the light into electronic signal which is proportional to the light intensity. The arteriolar bed normally pulsates and absorbs variable amounts of light during systole and diastole, as blood volume increases and decreases. The ratio of light absorbed at systole and diastole is translated into an oxygen saturation measurement. This measurement is referred to as SpO2. This equipment mainly composed of PCB board, On/Off button, mode button, OLED screen, battery compartment, and plastic shell. The device is a spot-check pulse oximeter and does not include alarms. The device does not support the measurement in the condition of low perfusion. The device is not intended for life-supporting or life-sustaining. The device is reusable and does not need sterilization.