Ventricular septal defect occluder

Abstract

The invention provides a ventricular septal defect occluder. A fabric body comprises a left-side disc region, a middle cylindrical region and a right-side eccentric disc region; the fabric body extends outwards by 1.5-2mm to form the edge of the left-side disc region; the diameter of the middle cylindrical region is between 4mm and 20mm, and the thickness of the middle cylindrical region is between 3mm and 4mm; the right-side eccentric disc region is arranged eccentrically, relative to the left-side disc region, and the shortest edge of the right-side disc region extends outwards by 0.5mm from the outer diameter of the middle cylindrical region, while the longest edge of the right-side disc region extends outwards by 3.5mm; the closed-up positions of the fabric body are located in the centers of the left-side disc region and the right-side eccentric disc region, respectively, and a thin film is arranged in the internal cavity of the middle cylindrical region. The eccentric structure of the occluder is arranged reasonably, and therefore, the occluder is capable of meeting the requirement on clamping a defect opening and also relieving the problem of ventricular septal compression conduction block caused by too long trailing; the basic function of clamping can be realized, and meanwhile, resistance to blood is reduced as much as possible when the flood flows through, and as a result, the blood is enabled to flow smoothly.

Description

technical field [0001] The invention relates to the field of occluders used in occlusion repair operations for ventricular septal damage, in particular to an occluder for ventricular septal damage. Background technique [0002] The ventricular septum is hypoplastic in the embryo, forming abnormal communication and producing a left-to-right shunt at the ventricular level, which can be present alone or as part of a complex cardiac malformation. Ventricular defect is one of the most common congenital heart diseases. [0003] Currently, symmetric occluders and asymmetric occluders are often used in ventricular septal repair. Some damaged parts are located at the upper end of the interventricular septum, close to the aortic valve or pulmonary valve, with the aortic valve ring on the left ventricle side and the pulmonary valve ring on the right ventricle side, and there is no corresponding muscle tissue to support it. The structure of the current asymmetric occluder is as follow...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the deficiencies in the prior art, the present invention provides an occluder for ventricular septal damage, which is used for occluding ventricular septal damage close to the pulmonary valve annulus. Solve the problem of conduction block caused by the compression of the ventricular septum at the existing occlusion site, and at the same time solve the problem that the occluder is easy to fall off after the operation

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