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Ventricular septal defect blocking apparatus and its making method

A technique for ventricular septal defect and its manufacturing method, which is applied in medical science, prosthesis, surgery, etc., can solve problems such as aortic valve regurgitation and immaturity, and achieve safe and convenient manufacture and operation, wide clinical application, and occlusion effect good effect

Inactive Publication Date: 2005-02-23
LIFETECH SCIENTIFIC (SHENZHEN) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the developed ventricular septal defect occluder can cause serious complications such as aortic valve regurgitation due to damage to the adjacent tissues, especially the aortic valve. Therefore, there is no mature occlusion for the interventional treatment of membranous ventricular septal defect. device can be used clinically

Method used

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  • Ventricular septal defect blocking apparatus and its making method
  • Ventricular septal defect blocking apparatus and its making method
  • Ventricular septal defect blocking apparatus and its making method

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Embodiment Construction

[0024] The structural shape of the ventricular septal defect occluder is designed according to the shape of the ventricular septal defect and the basic requirements for the occluder. The common ventricular septal defect is circular in shape, and its wall thickness is usually 4-7 mm. Important adjacent structures such as the aortic valve, mitral valve, tricuspid valve, conduction bundle, etc., there is a pressure difference of 30-90 mmHg on both sides of the cavity. Accordingly, the structural shape of the ventricular septal defect occluder of the present invention is designed as a mesh asymmetric "I" shape. figure 1 , figure 2 , image 3 One embodiment of the occluder of the present invention is shown. The ventricular septal defect occluder includes a single-layer disc frame 1, a double-layer disc frame 5, a column body 2, a connector 3 and a bluff body 4, and the column body 2, the single-layer disc frame 1 and the double-layer disc frame 5 are all metal tubular. The sin...

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Abstract

A blocking device for both muscular and membranous ventricular septal defects features that it has the extended parts of discoid like the butterfly's wings and the space between the said butterfly wings. As a result, it can not damage the important organs such as aortic valve near the defect after it is transplanted in human body. Its preparing process includes such steps as carving slits on NiTi tube to form netted tube, vacuum heat treating for high elasticity, removing oxidized film from its surface, welding netted tube to jointer, putting in a mould, high-temp. shaping, cooling, and demoulding.

Description

technical field [0001] The invention relates to a medical device and a manufacturing method thereof, in particular to a medical occlusion device for human heart ventricular septal defect and a manufacturing method thereof. Background technique [0002] The traditional treatment for ventricular septal defect in the human heart is surgery. In recent years, interventional therapy for congenital heart disease has developed rapidly, and clinical applications of patent ductus arteriosus occluders and atrial septal defect occluders have emerged. The ventricular septal defect occluder is only suitable for muscular ventricular septal defects accounting for 1 to 5% of ventricular septal defects. The membranous ventricular septal defect, which accounts for 30 to 50% of ventricular septal defects, has a complex surrounding tissue structure, adjacent to the aortic valve, mitral valve, and tricuspid valve, with many conduction bundles and right ventricular muscle bundles. At present, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/00A61F2/02A61F2/24A61L31/00
Inventor 张智伟曾国洪臧式先成正辉
Owner LIFETECH SCIENTIFIC (SHENZHEN) CO LTD
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