A left atrial appendage occluder skeleton

Abstract

The invention discloses a left atrial appendage occluder skeleton, which includes a middle annular frame. Both ends of the middle annular frame have a proximal conical frame and a distal conical frame respectively, and the proximal conical frame and the distal conical frame are The vertices are all located inside the middle ring frame. The beneficial effects of the present invention are: 1), the fixed cap of the proximal conical frame does not protrude, does not affect blood flow, and reduces the risk of secondary thrombosis; 2), the distal conical frame adopts a closed-loop design, which The expansion and compression deformation are uniform, so that the initial release shape of the left atrial appendage occluder skeleton is "flower"-shaped, not sharp "stick"-shaped, to avoid damage to the inner wall of the left atrial appendage during the release process; the middle ring frame adopts a closed-loop design to seal the left atrial appendage. When the occluder skeleton is expanded or compressed, the axial length does not change or changes very little, making it suitable for left atrial appendages of various depths; 3), the overall structural design allows the left atrial appendage occluder skeleton to have sufficient support when At the same time, it also has sufficient flexibility.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a frame of a left atrial appendage occluder. Background technique [0002] Atrial fibrillation is a common arrhythmia in the elderly and heart disease patients, and it is one of the main causes of ischemic stroke. There are more than 2 million patients with atrial fibrillation in the United States. If calculated according to the population, there should be nearly 10 million patients with atrial fibrillation in my country. The main harm of atrial fibrillation is to cause stroke and induce heart failure, and the former is more harmful. Follow-up studies have shown that the incidence of stroke in patients with atrial fibrillation is as high as 20% within 5 years, and the one-year mortality rate after stroke is as high as 30%, and one-third of patients relapse within 5 years. Once a stroke occurs, it can be disabling or fatal. Therefore, the main goal of atrial fibrillation...

AI Technical Summary

Problems solved by technology

[0009] In order to solve technical defects such as the left atrial appendage occluder skeleton easily causing secondary thrombus, easy to damage the left atrial appendage, and insufficient flexibility in the prior art, the present invention provides a left atrial appendage occluder skeleton, which reduces the risk of secondary thrombus formation. risk, avoiding damage to the left atrial appendage during the release process of the occluder skeleton, and at the same time, the left atrial appendage occluder skeleton provided by the present invention has sufficient flexibility while ensuring good supporting force

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