Cardiac interatrial septum shunt system

Abstract

The invention provides a cardiac interatrial septum shunt system. The cardiac interatrial septum shunt system comprises a stomy member for forming a stoma in an interatrial septum. The cardiac interatrial septum shunt system further comprises an extending member arranged in an inner side space of the stomy member, wherein the extending member can be filled with fluid, and the stomy member comprises a conductive part for ablating tissue around the stoma. The extending member is used for changing a diameter size of the stomy member through volume of the filled fluid, so as to adjust the size of the stoma to be appropriate; and the conductive part is in contact with interatrial septum tissue nearby the stoma and is used for receiving a radio-frequency power supply so as to ablate the tissue of the interatrial septum at the stoma, thus, the interatrial septum tissue nearby the stoma can be deactivated, the condition that the stoma is blocked up due to crawling of repair endothelia of the tissue is prevented, and a stomy form can be fixed after stomy by an interatrial septum stomy system.

Description

technical field [0001] The invention relates to the technical field of interventional medical devices, in particular to a percutaneous intervening cardiac atrial septal shunt system. Background technique [0002] Heart failure (heart failure for short), is a complex clinical syndrome of impaired ventricular filling or ejection due to any structural or functional abnormality of the heart, the main clinical manifestations of which are dyspnea and fatigue (limited exercise tolerance), and Fluid retention (pulmonary congestion and peripheral edema). Heart failure is the severe and terminal stage of various heart diseases, with a high incidence rate, and is one of the most important cardiovascular diseases today. According to the location of heart failure, it can be divided into left heart failure, right heart failure and whole heart failure. [0003] Heart failure is a serious disease with high morbidity and mortality. The incidence of heart failure in my country is 2-3%, mor...

AI Technical Summary

Problems solved by technology

[0008] The above-mentioned technology has the following defects: the implant used for atrial shunt leaves a device at the stoma, which easily leads to thrombus formation, or the device falls off to form an embolism

In addition, the channel closure loses the shunt effect due to the endothelial attachment can cause the opening of the device to be blocked

In addition, there is a high risk of cutting intracardiac tissue by mechanical or high-frequency electrocautery during the operation, such as loosening of the intraoperative grasping device during surgery or during recovery, which may cause the cut tissue to fall off and be damaged. embolism

In addition, if the grasping device becomes loose during the cutting process, other myocardial tissue can easily be damaged

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