Iron-based alloy degradable aorta stent for treating infant aortic constriction

Abstract

The invention discloses an iron-based alloy degradable aorta stent for treating infant aortic constriction which comprises a stent body, the stent body is in a cylindrical hollow shape, annular rings are arranged at the two ends of the stent body, and the stent body is formed by connecting a plurality of rows of rhombus-shaped frames through V-shaped connecting rods. When the iron-based alloy degradable aorta stent is placed, aorta constriction can be relieved, acute dissection and aneurysm can be reduced, no metal is left after degradation, blood vessels are remodeled and grow, and if intervention is needed again, no matter a surgical operation or balloon dilatation or stent placement is affected. Due to the arrangement of the rhombus-shaped frame and the annular rings at the two ends and the middle of the stent, the stent has strong supporting force, the V-shaped connecting rod is easy to bend and can be used at the bending position of the blood vessel, the long axis shortening rate is reduced, and due to the frustum-shaped arrangement of the two ends of the stent, blood damage is reduced, and the thrombus risk is reduced.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to an iron-based alloy aortic degradable stent for treating coarctation of the aorta in infants. Background technique [0002] Coarctation of aorta (CoA) is a common congenital heart disease (CHD), accounting for about 5%-8% of CHD, and the incidence rate is about 4 / 10000 live births. The ratio of male to female is 1.27:1.7. It occurs between the beginning of the left subclavian artery and the junction of the ductus arteriosus. The pathogenesis is unclear and the natural prognosis is poor. About 5% of the children die within a few weeks after birth, and 10% Children with CoA will develop heart failure at 1-6 months, and the average age of death of CoA patients under the natural course is about 34 years old. The study found that the incidence of cardiovascular complications before CoA operation in infancy, the incidence of hypertension and re-stenosis after operation we...

AI Technical Summary

Problems solved by technology

[0005] Therefore, the stent diameter in the prior art to be solved by the present invention is constant, re-narrowing occurs, and the supporting force is poor.

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