A fistula function monitoring system and terminal device for hemodialysis patients

Through the hemodialysis patient fistula function monitoring system, optical principles and machine learning classifiers are used to evaluate the degree of vascular stenosis and blood flow, solving the problem of difficult monitoring of fistula function in the prior art, achieving efficient and convenient monitoring and evaluation, and improving the quality of life and medical efficiency of patients.

CN119770009AInactive Publication Date: 2025-04-08SHANDONG FIRST MEDICAL UNIVERSITY FIRST AFFILIATED HOSPITAL (QIANFO MOUNTAIN HOSPITAL OF SHANDONG PROVINCE)
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Patent Information

Application Number
CN202510028845.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-08
Publication Date
2025-04-08
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing method of monitoring the function of arteriovenous fistulas relies on ultrasonic Doppler equipment, which is large in size, high in price and requires professional operation, limiting its application in home care and daily monitoring, resulting in a decrease in fistula function and delaying the timing of intervention, affecting patient dialysis and increasing medical expenses.

Method used

It provides a functional monitoring system for fistula in patients with hemodialysis, including a collection module, a feature extraction module and a functional evaluation module. It obtains vascular characteristics through optical principles, calculates blood flow perfusion index and heart rate, combines blood oxygen saturation, systolic blood pressure and diastolic blood pressure, and uses a machine learning classifier to evaluate the degree of vascular stenosis and blood flow to achieve monitoring and evaluation of fistula function.

Benefits of technology

It realizes a complete process from signal collection, feature extraction to vascular quality assessment, and provides a convenient, low-cost, and can monitor the function of fistula anytime and anywhere, improving the monitoring convenience and accuracy of hemodialysis patients, reducing medical costs and patient pain.

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Abstract

The present invention belongs to the field of hemodialysis monitoring equipment, and provides a hemodialysis patient arteriovenous fistula function monitoring system and terminal equipment. The system comprises: an acquisition module, which is used to obtain the intensity of reflected light returned after detection light is irradiated to blood vessels under the skin of a human forearm, generate a current signal according to the reflected light, and convert the current signal into a measurement signal; a feature extraction module, which is used to obtain an intensity change sequence of the reflected light based on the measurement signal, separate a DC component and an AC component from the intensity change sequence, and obtain a blood perfusion index, a heart rate, and blood oxygen saturation, systolic pressure and diastolic pressure; a function evaluation module, which uses the maximum and minimum values ​​of the blood perfusion index, blood oxygen saturation, systolic pressure and diastolic pressure as first features, and adds heart rate as a second feature, and obtains the stenosis degree and blood flow of the blood vessel based on a machine learning classifier evaluation; the present invention can solve the problem in the prior art that the function of the arteriovenous fistula of a hemodialysis patient is difficult to intuitively monitor.
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