A New Atrial Septal Defect Occluder

Abstract

Provided is a new occluding device for septal defect comprising a barrier layer, a first stent (3), a second stent (4), a first fixed connecting piece (1) and a second fixed connecting piece (2). According to the present invention, the new occluding device for septal defect opens up new perspectives for closing a septal defect thanks to the occluding force applied between the septal defect to clamp the edges efficiently. Unlike the prior art where occluding devices have a fixed dimension for the wraist, said new occluding device occludes the septal defect by clamping the edges thereof.

Description

Technical field [0001] The present invention relates to the technical field of medical devices, in particular to a novel atrial septal defect occluder. Background technique [0002] Atrial septal defect is a common clinical congenital heart disease. The lesion is characterized by the failure of the atrial septum between the left and right atria to close normally, and blood flows between the left and right atria. The atrial septal defect is mainly formed during the growth and development of the fetus. Due to certain factors affecting the development of the heart, the atrial septal defect is formed. For patients with atrial septal defect, because the pressure of the left atrium is higher than that of the right atrium, part of the blood in the left atrium flows to the right atrium through the atrial septal defect, which increases the burden on the right heart system, causing right ventricular hypertrophy and pulmonary circulation. Increase, the long-term existence of atrial septal ...

AI Technical Summary

Problems solved by technology

[0003] Surgery is the traditional method for the treatment of atrial septal defect. However, surgical treatment of atrial septal defect requires thoracotomy, which has the following disadvantages: extracorporeal circulation is required during the operation, which may cause complications and lead to death; Scars from lower surgical incisions; also expensive surgery

However, it has been found through clinical application that the Rishkind and Sideris occluders have a low success rate and a high incidence of complications, and have been gradually eliminated. In recent years, the most widely used clinical occluder is the Amplatzer occluder, which has a double-disc thin waist structure. With a fixed waist size, it is often difficult to clamp the "soft edge" of the atrial septal defect, resulting in residual leakage during and after the operation, resulting in failure or incomplete closure of the atrial septal defect. At the same time, this standardized occluder design Difficult to meet complex and variable atrial septal anatomy and prone to complications

As for other occluders developed to adapt to atrial septal defects of different anatomical forms, there are defects such as complicated models, inconvenient production and use, and increased surgical complexity.

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