Artificial interventional aortic valve stent with radial support force variation

A technology of radial support and aorta, applied in the direction of heart valves, etc., can solve problems such as new lesions in non-lesional areas

Inactive Publication Date: 2019-05-21
BEIHANG UNIV
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Problems solved by technology

At present, in the design of stents, the priority is to ensure a large radial support force in the lesion area to meet the expansion and anchoring effect on the stenosis area. Due to the overall consistency of the stent material and the grid structure, the stent also provides support in the non-lesioned area of ​​the ascending aorta. Larger radial support force, which may lead to new lesions in non-lesional areas

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  • Artificial interventional aortic valve stent with radial support force variation

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Embodiment Construction

[0015] Aiming at the service conditions and problems encountered in the above-mentioned artificial interventional aortic valve, the present invention proposes a variable radial support force optimization method of the stent to ensure that the stent provides sufficient radial support force in the lesion area to prop up the stenosis area and anchor itself. At the same time, change the radial support force of the stent to the non-lesion area, so as not to damage the blood vessel wall tissue and generate new lesions.

[0016] The method for optimizing the variable radial support force includes optimization of the grid structure of the stent, optimization of the structure of the stent rib and optimization of the material of the stent.

[0017] The grid structure optimization of the scaffold: the scaffold includes a repeating grid structure. By adjusting the grid density of the specified area of ​​the stent, the radial support force of the area of ​​the stent is changed.

[0018] O...

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Abstract

The invention discloses a variable radial support force optimization method of an artificial interventional aortic valve stent. The optimization method belongs to the technical field of artificial interventional aortic valve stent optimization. The method specifically comprises the following steps of: optimizing a support grid structure, optimizing a support rib structure and optimizing a supportmaterial. The optimization method is simple in principle, does not change the overall size of an original stent, inherits the core design concept and method of the original stent, optimizes the radialsupporting force of a non-lesion region on the basis of the treatment effect of the original stent on the lesion region, and can select a diversified optimization scheme according to different practical application scenes, thereby solving a practical problem from multiple angles by using multiple schemes. Meanwhile, the optimization method has higher feasibility. The invention provides scientificand reasonable design thoughts and research and development directions for scientific research workers engaged in artificial interventional aortic valve stent design, shortens the research and development period and improves the research and development benefit.

Description

technical field [0001] The invention relates to the technical field of optimization of an artificial interventional aortic valve stent, and specifically refers to a method for optimizing a variable radial support force of an artificial interventional aortic valve stent. Background technique [0002] The aortic valve, located between the left ventricle and the ascending aorta, acts as a one-way valve that opens during systole to allow blood from the left ventricle to flow into the ascending aorta, and closes during diastole to allow Ensure that blood from the ascending aorta does not flow back into the left ventricle. If the aortic valve is abnormal, such as when the heart does not open fully during systole (stenosis), the left ventricle stops ejecting blood, or it does not close completely during diastole (regurgitation), and blood that has been ejected into the ascending aorta It will flow back to the left ventricle in reverse, which will reduce the function of the heart a...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
Inventor 樊瑜波王丽珍杨贤达唐笑兰吴泽斌孙安强
Owner BEIHANG UNIV
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