METHOD FOR DETERMINING HEART WORK PARAMETERS AND ELECTRONIC DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC A61B5/1455 A61B5/24 

FIELD: medical equipment.

SUBSTANCE: group of inventions relates to medical equipment, namely to a method and a wearable electronic device for determining heart work parameters. When implementing the method, a laser radiation stream is formed. The laser radiation stream includes radiation from the first pair of sources with different wavelengths. Each of sources is provided with a means of converting laser radiation reflected from a human body into electrical signals. Sources are made of diode. One of sources provides a wavelength from 540 nm to 550 nm, the second one - from 560 nm to 570 nm. At the same time, one of the mentioned sources provides longitudinal polarization, and the second one – transverse polarization. An additional laser radiation stream is formed of the second pair of diode laser radiation sources. The second pair of diode sources provides wavelengths from 520 nm to 528 nm and from 532 nm to 540 nm, respectively. Each source of the second pair is provided with a means of converting laser radiation into electrical signals. At the same time, one of the mentioned sources of the second pair provides longitudinal polarization, and the second one – transverse polarization. Tissues of a part of the human body are irradiated with streams. The radiation reflected from tissues is converted into electrical signals that carry information about heart work parameters. Based on electrical signals, biopotentials of the heart are determined. The wearable electronic device contains means of processing electrical signals carrying information about heart work parameters to implement the method.

EFFECT: due to laser radiation sources with different wavelengths and longitudinal and transverse polarization, the effect of external illumination is eliminated and, after mathematical processing, a better overall signal is obtained by adding two independent intensity curves of the reflected signal received from red blood cells with different spatial orientation.

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