Cerebral blood flow regulation function monitor system and method for detecting cerebral circulation critical closing pressure

Abstract

A cerebrovascular regulation function monitor system and a method for detection of cerebrovascular circulation critical closing pressure, wherein the cerebrovascular regulation function monitor system includes a signal collection system for in-phase sampling analog signal of transcranial doppler (TCD) signal and continuous artery pressure signal and further converting the analog signals into correspondent digital signals and a signal processing / displaying system connected with the signal collection system via interfaces for processing the digital signals to obtain the cerebrovascular critical closing signal and displaying them. The method and system realize a non-invasion detection and monitor of cerebrovascular autoregulation function in clinical practice.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a non-invasive cerebral blood flow automatic regulation function detection / monitoring system and a method for real-time detection of the critical closing pressure of cerebral circulation, thereby realizing clinical non-invasive detection and monitoring of the lower limit of cerebral blood flow automatic regulation. Background technique [0002] The autoregulation function of human cerebral blood flow is very important in the occurrence, development, diagnosis and treatment of cerebrovascular diseases. Therefore, accurate and practical non-invasive cerebral blood flow autoregulation function detection / monitoring equipment is urgently needed clinically. Traditional physiological theory holds that cerebral blood flow depends on the pressure difference between mean arterial pressure and intracranial pressure (or venous pressure) and the total blood flow resistance of cerebral vessels....

AI Technical Summary

Problems solved by technology

[0003] Existing method ①Although it is a classic method for evaluating the autoregulation function of cerebral blood flow, it has been used in animal experiments for many years, but it is difficult to be used in clinical practice

Because the methodologically necessary artificial arterial blood pressure rise and fall can lead to serious complications in cerebrovascular patients with borderline autoregulation

At the same time, the graded change of blood pressure makes the measurement results more reliable in the group, but the measurement accuracy of specific patients is greatly affected. Even for some patients, sometimes it is difficult to objectively determine the upper and lower limits of automatic adjustment with classic methods.

Existing methods ② and ③, in addition to having the same shortcomings of artificially intervening in arterial blood pressure and being unfavorable for clinical practice, both have the disadvantages of artificial grading of measurement results and unsatisfactory measurement accuracy (for example, the automatic adjustment index is only divided into 0~ Grade 9), unable to meet the clinical needs, especially the actual needs of diagnosis and treatment of cerebrovascular diseases

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