Blockage capable of reducing the thrombus source

Abstract

The invention relates to an invasive medical device, in particular to a stopper for treating the congenital heart disease. A stopper capable of reducing thrombus source is composed of a net made of a medically implantable material, wherein the net has an open and hollow left disk Compared with prior art, the stopper has reduced weight since the disk is partially or completely open and hollow, thus reducing the burden implanted into the human body. Moreover, the stopper in prior art is mainly made of metal, but the stopper in the invention can greatly reduce the coverage rate of metal and lowers the leakage amount of metal ions, thus effectively suppressing the generation of thrombus. Tests show that the stopper can effectively promote coverage of endothelial cells, so that a natural isolation layer can be formed on the surface in a short time, thus greatly improving the blockage effect.

Description

technical field [0001] The invention relates to an interventional medical device, in particular to an occluder for treating congenital heart disease. Background technique [0002] Congenital heart disease (congenital heart disease for short) is a congenital malformation caused by abnormal development of the heart and blood vessels in the fetal period, and is the most common heart disease in children. The incidence rate of congenital heart disease is about 7-8‰ of live-born babies. About 34% of untreated patients can die within 1 month, and 50% can die within 1 year. Most of the early deaths after birth are complex deformities or Those who are seriously ill. Among various congenital heart diseases, ventricular septal defect was the most common, followed by patent ductus arteriosus, tetralogy of Fallot and atrial septal defect. [0003] In recent years, due to the application of cardiac catheterization and angiocardiography, as well as the development of open-heart surgery u...

AI Technical Summary

Problems solved by technology

[0005] Although interventional medical products for congenital heart disease have achieved rapid development, there are still deficiencies that need to be further resolved

Although the above-mentioned occluder does not use the head and bolt for riveting, since the metal wire completely covers the entire left and right disks, its metal content is still high, which affects the crawling of endothelial cells. A natural isolation layer is formed on the surface, which is not conducive to the blocking effect

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