Blockage capable of reducing the thrombus source

An occluder and thrombus technology, applied in the field of occluders for the treatment of congenital heart disease, can solve the problems of affecting endothelial cell crawling, high metal content, unfavorable occlusion, etc., so as to improve occlusion effect and reduce leakage amount, the effect of avoiding the formation of thrombus

Active Publication Date: 2008-10-15
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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  • Abstract
  • Description
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  • Application Information

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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

Method used

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  • Blockage capable of reducing the thrombus source
  • Blockage capable of reducing the thrombus source
  • Blockage capable of reducing the thrombus source

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Embodiment Construction

[0027] Below in conjunction with specific embodiment, the present invention is described in further detail: the occluder among the present invention is applicable to the atrial septal defect (ASD) occluder of congenital heart disease treatment process, patent ductus arteriosus (PDA) occluder and interventricular septum Defect (VSD) occluder, etc.

[0028] Such as figure 1 As shown, the mesh septum of the occluder is composed of medically implantable materials woven into a fine mesh, and the umbrella surface of the left atrial umbrella 3 is open and hollow.

[0029] Such as figure 2 , 3 As shown, an atrial septal defect (ASD) occluder is taken as an example for illustration. The occluder is mainly composed of a metal mesh compartment 1 woven by NiTi alloy wires and a flow-blocking membrane 2 arranged in the middle of the metal mesh. The flow-blocking membrane 2 can be PET, PTFE or degradable collagen material. The whole occluder is divided into three parts: the left atriu...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24A61F2/02
Inventor 訾振军臧式先冯耀庭曾敏吕世文
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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