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An analysis method for mechanical performance optimization of artificial heart valve based on ANSYS/Workbench

A technology of artificial heart and analysis method, applied in heart valve, instrument, calculation, etc., can solve problems such as reducing the service life of heart valve

Inactive Publication Date: 2016-11-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the patient's heart valve is replaced, the heart valve is damaged due to the structural degradation of the biological valve, which reduces the service life of the heart valve

Method used

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  • An analysis method for mechanical performance optimization of artificial heart valve based on ANSYS/Workbench
  • An analysis method for mechanical performance optimization of artificial heart valve based on ANSYS/Workbench
  • An analysis method for mechanical performance optimization of artificial heart valve based on ANSYS/Workbench

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Embodiment Construction

[0079] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0080] The mechanical performance analysis of fluid-solid coupling of biological valve based on ANSYS, the steps are as follows:

[0081] A.1.(1) Geometric modeling of biological valve leaflets

[0082] In the process of modeling the valve leaflets of biological valves, we use the default Cartesian coordinate origin of Pro / E software as the modeling origin O, and create according to the geometric equations of each rotating surface (spherical surface, cylindrical surface, rotating paraboloid and ellipsoid) Surface of revolution. Taking the (13,0,z) line parallel to the Z axis as the axis of rotation, make a conical surface passing through the lowest point B of the surface of revolution, and the half-vertex angle α of the conical surface is 3°. The conical surface is intersected with the four surfaces of revolution to obtain intersecting lines. The XOZ...

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Abstract

The invention discloses an analyzing method based on ANSYS / Workbench artificial heart valve mechanical property optimization. The method is based on heart valve fluid dynamics and illuminates the theory that a fluid domain (blood) and a slid domain (artificial heart valve) couples with each other, and by establishing a fluid-solid coupled finite element model of biovalve, the fluid-solid coupled analysis of the biovalve is conducted. A natural heart valve configuration of a human body serves as an archetype, valve leaflet reference molded surfaces of a current research field are combined, and four rotating surfaces, namely a ball surface, a cylindrical surface, a paraboloid of revolution and an ellipsoidal surface are selected as the archetype reference surfaces of the biovalve. The analyzing method for analyzing the advantages and disadvantages of mechanical property of different biovalve valve shapes is provided.

Description

technical field [0001] The invention relates to an analysis method for optimizing the mechanical performance of an artificial heart valve based on ANSYS / Workbench. Background technique [0002] Heart valve disease will impair hemodynamic performance and affect the normal blood circulation of the human body. Since 1960, when artificial valves were used to replace poorly functioning heart valves, tens of millions of patients have undergone heart valve replacement surgery, thereby prolonging the life of patients. Bioprosthetic valves are widely used in clinical practice due to their good hemodynamic performance, no need to take anticoagulant drugs for life, and low risk of thromboembolism. Over the years, researchers have been working on developing heart valves with better performance, but the function of biological valves is still quite different from that of natural heart valves. After the heart valve is replaced by the patient, the service life of the heart valve is reduce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24G06F19/00
Inventor 袁泉张霞张潇丛华
Owner SHANDONG UNIV