Device for detecting cerebral blood flow regulation function

Abstract

The invention discloses a device for detection a cerebral blood flow regulation function, which belongs to the technical field of biomedical engineering. The device comprises a piezoelectric ceramic plate (1), a fixed elastic ribbon (2) of the piezoelectric ceramic plate (1), a trans-cranial Doppler probe module (3), a detection box (5), a light-emitting diode (6) and a phase difference result display LED (7), wherein the piezoelectric ceramic plate (1) is used for measuring pulse waves; the trans-cranial Doppler probe module (3) is used for measuring medium-sized artery blood flow velocity waves; the light-emitting diode (6) is arranged on the detection box (5) and is used for indicating effective characteristic waves; and the piezoelectric ceramic plate (1) and the trans-cranial Doppler probe module (3) synchronously measure signals and are connected with a respiratory frequency band characteristic wave extraction and phase difference detection circuit arranged in the detection box (5) through a connecting wire (4) respectively. The device needs no external artery blood pressure control, has high use safety, uses the piezoelectric ceramic plate to measure pulse pulsation signal waveforms from a wrist directly, and evaluates the cerebral blood flow regulation function according to phase changes of respiration characteristic waves of pulse and the cerebral blood flow, and has the advantages of use safety, simple and convenient operation, quick measuring and processing speed and high performance price ratio.

Description

Technical field: [0001] The invention relates to a cerebral blood flow regulating function detection device for the phase difference between the pulse and the cerebral blood flow respiratory characteristic wave, and belongs to the technical field of biomedical engineering. Background technique: [0002] Cerebral blood flow autoregulation refers to the ability to maintain relatively stable cerebral blood flow when cerebral perfusion pressure changes to a certain extent. The brain is the nerve center of the human body and one of the most fragile organs of the human body. It cannot be separated from oxygen for a moment, and its oxygen consumption accounts for about 25% of the total oxygen consumption of the whole body. Brain tissue has almost no energy reserves and requires a continuous supply of oxygen and glucose from blood circulation. The blood flow required by the brain accounts for 15-20% of the heart's stroke volume. However, under a series of physiological and patholo...

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Problems solved by technology

This kind of device needs to introduce external arterial blood pressure control, which increases the risk factors of the subjects; at the same time, using the digital continuous blood pressure measuring instrument to non-invasively measure the waveform of continuous arterial blood pressure, the equipment is expensive, the algorithm is complicated, and the error is large.

[0004] After document retrieval, no public reports related to the cerebral blood flow regulation function detection device with the same technical solution as the present invention have been found.

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