Method, system and equipment for predicting crack propagation of artificial valve leaflet and medium

The method predicts crack extension in artificial heart valves by analyzing stress loads over multiple heart cycles, addressing the challenge of determining when replacement is necessary, thereby enhancing clinical management and valve design.

CN119720477AActive Publication Date: 2025-03-28BEIJING INST OF TECH
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Patent Information

Application Number
CN202411511184.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-28
Publication Date
2025-03-28
Estimated Expiration
2044-10-28

AI Technical Summary

Technical Problem

Current technologies are inadequate in predicting the rate of crack extension and trajectory of artificial heart valve cracks, especially after the valve reaches its fatigue limit, making it difficult to determine when a replacement is needed.

Method used

A method and system for predicting crack extension in artificial heart valves by analyzing stress loads over multiple heart cycles, calculating maximum and minimum stress values, and using these to estimate crack growth, allowing for the determination of remaining lifespan or the need for intervention.

Benefits of technology

Enables accurate prediction of crack growth and remaining lifespan of artificial heart valves, aiding in clinical management and optimizing valve design by providing timely intervention and improving patient safety.

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Abstract

The invention provides a method, a system and equipment for predicting crack propagation of an artificial valve leaflet and a medium. The method comprises the following steps: acquiring a stress load spectrum of any point on the surface of the artificial valve leaflet in a plurality of cardiac cycles and an initial crack shape and length; obtaining the number of load sequence segments of the stress load spectrum of the cardiac cycle after the load trend tends to be stable, and the maximum stress value and the minimum stress value of each segment of load sequence; according to the maximum stress value and the minimum stress value of each section of load sequence, calculating and obtaining the maximum stress and the minimum stress around the crack, calculating and obtaining the crack propagation tearing length generated by each section of load sequence, and then obtaining the single total tearing length generated by a single cardiac cycle according to the length of the initial crack; and according to the total crack length of the artificial valve leaflet when the artificial valve leaflet is damaged, calculating to obtain the required total cardiac cycle times. According to the method, the damage size of the artificial valve leaflet can be predicted more accurately, and then diagnosis and treatment and optimization design of the prosthetic valve are assisted.
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