Negative-Poisson-ratiochiral concave hexagonal hybrid unit cellvascular stent

Abstract

The invention provides a negative-Poisson-ratio chiral concave hexagonal hybrid unit cell vascular stent which comprises an annular angular point and three ligaments, and the three ligaments are at equal intervals and are tangent to the annular angular point to form single angular points. Mirroring operation is carried out on the single angular points to form chiral concave hexagonal hybrid periodic unit cells. The chiral concave hexagonal hybrid periodic unit cells are annularly and periodically arranged along an arterial stent and periodically arranged along the arterial stent in a mirroringmode to form the chiral concave hexagonal hybrid unit cell vascular stent. The stent has the negative Poisson ratio characteristic, the mechanical property of the vascular wall internal membrane canbe matched through unit cell structure parameter regulation and control, the damage of the stent to vascular wall biological tissue is reduced, the restenosis risk of the vascular wall is reduced, andvascular wall biological tissue regeneration is promoted.

Description

technical field [0001] The invention relates to the technical fields of biomedical engineering, interventional medicine and engineering, in particular to a negative Poisson's ratio chiral concave hexagonal hybrid cell vessel stent. Background technique [0002] According to research at home and abroad, cardiovascular disease is one of the important causes of disability and death worldwide. It is a common disease and frequently-occurring disease in all countries, and has become the primary killer threatening human health. The number of patients with cardiovascular disease in my country has reached 290 million, and 1 in every 5 adults suffers from cardiovascular disease. About 3.5 million people die of cardiovascular disease every year, 2 out of 5 deaths, and one person dies of cardiovascular disease every 10 seconds, ranking first in the incidence and mortality of all diseases in my country , the situation is grim. [0003] Treatment of arterial stenosis mainly includes drug...

AI Technical Summary

Problems solved by technology

Ordinary stents do not match the deformation characteristics of the intima of the blood vessel wall, which will cause damage to the biological tissue of the blood vessel wall, increase the risk of restenosis of the blood vessel wall, and bring uncertainties to the long-term health of the patient

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