DEVICE FOR CARRYING OUT NONINVASIVE MEASUREMENTS OF BLOOD SATURATION WITH OXYGEN Russian patent published in 2004 - IPC

FIELD: medical engineering. SUBSTANCE: device has input/output system for delivering radiation to organ under study. The system is optically connected to two emitters having wavelengths of λ₁ = 650±30 nm and λ₂ = 1000±200 nm, respectively, two photodetectors one of which is selective to λ₂, wavelength radiation, two filters of pulse (breathing) oscillations connected to amplifiers having variable amplification coefficients which control inputs are connected to devices for recovering constant component of signal, divider, light filter having transparency band coinciding the first light source bandwidth, two Doppler signal filters, two amplitude detectors and correlation unit. EFFECT: high accuracy of measurements. 1 dwg, 3 tbl