Gosudarstvennoe byudzhetnoe uchrezhdenie zdravookhraneniya Moskovskoj oblasti "Moskovskij oblastnoj nauchno-issledovatelskij klinicheskij institut im. M.F. Vladimirskogo" (GBUZ MO MONIKI im. M.F. Vlad
发明人:
Rogatkin Dmitrij Alekseevich,Рогаткин Дмитрий Алексеевич,Lapitan Denis Grigorevich,Лапитан Денис Григорьевич
申请号：
RU2015116108/14
公开号：
RU0002599371C1
申请日:
2015.04.28
申请国别(地区):
RU
年份:
2016
代理人:
摘要：
FIELD: medicine.SUBSTANCE: invention refers to medical equipment and is intended for measuring skin blood flow on the basis of the method of laser Doppler flowmetry. Device comprises primary source of laser radiation, primary radiation transportation system, secondary radiation receiving system and two channels of the signal electronic processing. Primary radiation transportation system comprises two optical fibers and a model simulating the optical properties of living biological tissue without blood. Secondary radiation receiving system comprises two optical fibers. Circuit of each channel comprises serially connected photodetector, filter of high frequencies, amplifier and an analog divider. Signal processing circuit on each channel additionally includes a low pass filter with a cutoff frequency of 2 Hz, connected in parallel with the photodetector and the second input of analog divider. Device also includes a differential amplifier, inputs of which are connected to analog outputs of the two channels dividers, and the output - with the scheme for calculating the index of perfusion.EFFECT: improved accuracy of received frequency microcirculation rhythms is achieved due to a removal from signal of spurious spectra in differential stage and elimination of subtraction of in-phase correlated useful signals at differential amplifier.1 cl, 7 dwgИзобретение относится к медицинской технике и предназначено для измерения кожного кровотока на основе метода лазерной доплеровской флоуметрии. Устройство содержит источник первичного лазерного излучения, систему транспортировки первичного излучения, систему приема вторичного излучения и два канала электронной обработки сигнала. Система транспортировки первичного излучения содержит два оптических волокна и модель, имитирующую оптические свойства живой биологической ткани без крови. Система приема вторичного излучения содержит два оптических волокна. Схема каждого канала содержит последовательно соединенные фотоприемное устройство,
