Novel atrial septal defect closure device

Abstract

The invention discloses a novel atrial septal defect closure device. The novel atrial septal defect closure device comprises a thin film barrier layer, a first stent body, a second stent body, a first fixed connection part and a second fixed connection part. According to the novel atrial septal defect closure device disclosed by the intention, a novel concept of closing atrial septal defects is provided; edges of the atrial septal defect are effectively and tightly clamped by utilizing a clamping force between the closure devices; a phenomenon that an existing closure device commonly has a fixed waist size and the atrial septal defects are closed through tightly clamping the edges of the atrial septal defects is avoided.

Description

technical field [0001] The 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 congenital heart disease clinically. The lesion is characterized by the failure of the atrial septum between the left and right atrium to close normally, and blood flows between the left atrium and the right atrium. Atrial septal defect is mainly formed during the growth and development of the fetus. Due to certain factors affecting the development of the heart, 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, causes right ventricular hypertrophy, and reduces the blood volume of the pulmonary circulation. The long-term e...

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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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