Non-invasive blood flow detection method, detection system and detection equipment

Abstract

The invention relates to a non-invasive blood flow detection method, detection system and detection equipment, comprising the following steps: fixing three ultrasonic probes on the body surface of a blood vessel to be measured, wherein the three ultrasonic probes are parallel to the direction of the blood vessel to be measured, etc. The distance is set, and the distance between two adjacent ultrasonic probes is recorded; the average value of the diameter of the blood vessel to be measured is obtained through the cooperation of three ultrasonic probes; the internal fistula murmur of the blood vessel to be measured is collected by using three microphones, and three ultrasonic probes are obtained respectively. group of internal fistula murmur signals, wherein the test points of the microphone and the test points of the ultrasonic probe are set in one-to-one correspondence; according to the three groups of internal fistula murmur signals and the distance between two adjacent ultrasonic probes, calculate the blood The average value of the flow velocity; the blood flow of the blood vessel to be measured is obtained according to the average value of the blood flow velocity and the average value of the diameter of the blood vessel to be measured. In fact, it is convenient and non-invasive to accurately calculate the real-time flow of blood vessels without interfering with the daily life of dialysis patients and dialysis treatment.

Description

technical field [0001] The invention relates to the technical field of blood flow monitoring, in particular to a non-invasive blood flow detection method, detection system and detection equipment. Background technique [0002] Hemodialysis is a common treatment method for chronic renal failure, uremia and other end-stage diseases. This method requires the establishment of an arteriovenous fistula in the arm, but it can cause a series of complications: thrombosis, aneurysm, etc., and even endanger the patient's life in severe cases. Therefore, it is very important to detect the blood flow in the internal fistula in real time, so as to avoid the situation that the blood flow blockage cannot be detected in time. [0003] At present, there are many methods for measuring blood flow. B-ultrasound is commonly used to perform vascular imaging to detect the diameter of the blood vessel, and then combine the frequency-shift signal generated by the ultrasound Doppler effect to analyze ...

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Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is to overcome the inconvenience of blood flow measurement at the ostomy site of hemodialysis patients in the prior art, and propose a method for indirect measurement of blood flow based on endoleak noise and at the same time based on low-power ultrasonic probes. Measure the diameter of the blood vessel to accurately calculate the real-time flow of the blood vessel without interfering with the daily life of the dialysis patient and the dialysis treatment

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