Oximetry System model CNIR-U20 Series
The CNIR-U20 series non-invasive brain oxygen monitoring device emits low-density near-infrared light that is harmless to the body. This light passes through a sensor placed on the patient's forehead, entering the skull and cerebral cortex. The light source on the sensor emits two different wavelengths of near-infrared light. Some of this light scatters in an arc due to refraction and scattering properties back toward the forehead. Two receiving points located at distances of 3 cm and 4 cm from the light source capture the scattered near-infrared light. Since oxyhemoglobin and deoxyhemoglobin absorb near-infrared light of different wavelengths to varying degrees, calculating the ratio of absorption between these two wavelengths allows determination of the ratio of oxyhemoglobin to deoxyhemoglobin, enabling rapid measurement of blood oxygen saturation in both hemispheres of the brain.
Basic Specifications:
Channel Quantity: Up to 4 channels available Fresh Rate：0.65s Light Length： 730nm&850nm
Sensor Type: Reusable and Single- Use Sensors
Large、Medium and Small sizes are available
Features：
Modularized compact Unit High Refresh Rate Distinct compatibility Plug &Play
User-friendly and intuitive software Performant Anti-interference Ability Support Two-Patient monitoirng mode
Idexes :
rSO₂: Cerebral Oxygen Saturation
THI: Total Hemoglobin Concentration Index
CHbO₂: Oxygenated Hemoglobin Concentration Index
CHb: Reduced Hemoglobin Concentration Index
ΔTHI: Change in Total Hemoglobin Concentration Index
ΔCHbO₂: Change in Oxygenated Hemoglobin Concentration Index
ΔCHb: Change in Reduced Hemoglobin Concentration Index
AUC: Cumulative Saturation of rSO₂ Below Threshold, i.e., the integral of the difference between rSO₂ below threshold and the threshold with respect to time (also known as Area Under the Curve)
TUT: Cumulative Time of rSO₂ Below Threshold
AUT: Percentage of Cumulative Time of rSO₂ Below Threshold to Total Monitoring Duration
