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Artificial aortic valve fluid-solid coupling model establishment method

A technology of fluid-solid coupling model and aortic valve, which is applied in medical simulation, instrumentation, calculation, etc., can solve problems such as the control equations of geometric model motion and dynamics that cannot be obtained, and achieve the effect of simple calculation process and accurate model construction

Inactive Publication Date: 2017-08-25
SHANDONG UNIV
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Problems solved by technology

[0003] However, the current methods for establishing the fluid-solid coupling model of the artificial aortic valve cannot obtain a geometric model close to the working environment of the real heart valve and control equations that accurately describe its motion and dynamics.

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  • Artificial aortic valve fluid-solid coupling model establishment method
  • Artificial aortic valve fluid-solid coupling model establishment method
  • Artificial aortic valve fluid-solid coupling model establishment method

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0031] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0032] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses an artificial aortic valve fluid-solid coupling model establishment method. Bioprosthetic valve parameterization geometric modeling is carried out based on elliptical and conic surfaces; an immersed boundary method is introduced for coupling of blood and valve leaflets; a blood fluid field control equation, a valve leaflet solid control equation and a boundary constraint condition equation associated with the two equations are established; and according to the immersed boundary method, virtual fluid field force is added for replacing fluid and solid mutual effect, thereby obtaining a blood and valve leaflet coupling equation set. According to the method, a geometric model close to a true heart valve working environment and the control equations for precisely describing motion and dynamics can be obtained; a calculation process is simple; the model is established accurately; and the reliable basis for bioprosthetic valve fluid-solid coupling simulation is provided.

Description

technical field [0001] The invention relates to a method for establishing a fluid-solid coupling model of an artificial aortic valve. Background technique [0002] Common causes of heart valve lesions include functional degeneration of structural tissue, fatigue damage caused by stress and strain, and calcification of valve leaflets. Researchers have been working on developing a heart valve with better performance, using fluid-solid coupling simulation to calculate the kinematics and dynamics characteristics of the heart valve and the blood flowing through it. The simulation model includes two parts, the geometric model and the mathematical model. Specifically, the aortic valve, blood, and their boundaries are expressed geometrically, and the governing equations are used to control the entities of these regions. Only by obtaining the geometric model close to the real heart valve working environment and the control equations that accurately describe its motion and dynamics ...

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Application Information

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IPC IPC(8): G06F19/00
CPCG16H50/50
Inventor 袁泉王志超朱宏伟唐丹丛华
Owner SHANDONG UNIV
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