Left atrial appendage occluder, pusher and left atrial appendage occlusion system

Abstract

The invention provides a left atrial appendage occluder, a pusher and a left atrial appendage occluder system. When the left atrial appendage occluder is not released, the hook structure of the left atrial appendage occluder is accommodated in the left atrial appendage occluder. In the storage hole or the storage hole of the pusher, the external thread structure of the pusher is in an engaged state with the internal thread structure of the left atrial appendage occluder, so that the left atrial appendage occluder can be folded, and then the left atrial appendage occluder can be closed. When the left atrial appendage occluder is sheathed, the problem of the left atrial appendage occluder being too long in the sheath can be avoided. When releasing, the first part is released first because the second part with the anchoring structure is not released. At this time, the positioning can be repeated until a suitable fixation position is reached, and then the second part is released to fix the left atrial appendage occluder. . It can be seen that the left atrial appendage occluder, pusher and left atrial appendage occluder system provided by the present invention can better realize the sheathing or release of the left atrial appendage occluder.

Description

technical field [0001] The invention relates to the technical field of implantable medical devices, in particular to a left atrial appendage occluder, a pusher and a left atrial appendage occluder system. Background technique [0002] Atrial fibrillation (AF) is the most common persistent cardiac arrhythmia clinically, and the incidence rate of atrial fibrillation in the general population is 0.5% to 1.3%. The main hazard of atrial fibrillation is the promotion of thrombus formation, which leads to complications such as stroke and peripheral vascular embolism after the thrombus falls off, which significantly increases the disability and mortality rates. Stroke is the most common and most harmful complication of atrial fibrillation. About 15 million people worldwide suffer from stroke every year, of which 20% to 25% are attributed to atrial fibrillation. Studies have shown that 60% of patients with rheumatic heart disease and atrial fibrillation have cardiogenic thrombus fro...

AI Technical Summary

Problems solved by technology

Due to the preferential release of the distal ring structure, it is difficult to adjust the cage structure and the anchoring structure on it to achieve repeated positioning, that is, it is difficult to achieve repeated positioning; and in repeated positioning, it is easy to damage the muscle fiber tissue

At the same time, it does not have the performance that can be moderately adjusted according to different left atrial appendage shapes

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