Cardiac occluder

Abstract

The invention belongs to the technical field of medical instruments, and relates to a cardiac occluder. The cardiac occluder comprises a sealing plug and a fixed seat, a biological membrane is fixed on the outer surface of the sealing plug; the fixed seat is fixed at the central position of one side of the sealing plug; a plurality of fixing blocks are fixed to the periphery of the outer portion of the fixed seat. A plurality of supporting rods are arranged on one side of the sealing plug around the outer part of the fixed seat; the supporting rod is elastically connected with the fixed blockthrough a spring; the supporting rod is rotationally connected with the sealing plug through a rotating shaft; a connecting base is fixed to the center of one side of the fixed seat, the connecting base comprises a connecting disc and a connecting column, the connecting disc is fixedly connected with the connecting column, the supporting rod facilitates supporting, pressing and fixing between theinserted occluder and the left auricle, fixing is stable and firm, falling is not prone to happening, dual fixing of a clamping mode and a screwing mode can be conducted on a conveying sheath throughthe connecting column and the connecting disc, the connection is stable and firm, the mounting and dismounting are convenient and fast, the plugging effect is good, and the plugging capacity is high.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a heart occluder. Background technique [0002] Atrial fibrillation (AF) is the most common type of arrhythmia clinically. The main hazard of atrial fibrillation is the formation of left atrial thrombus. After the thrombus falls off, it induces acute myocardial infarction, stroke, peripheral vascular embolism and other complications, increasing the disability rate and Fatality rate, at present, more than 90% of thrombi in patients with non-valvular atrial fibrillation come from the left atrial appendage, so closing or blocking the left atrial appendage can significantly reduce the thrombosis of medical devices and reduce thromboembolic complications. It is called the left atrial appendage. There is no obvious boundary between this part and the main part of the atrium, but the inner wall of the atrium is smooth, and the comb muscle on the inner wall of the atri...

AI Technical Summary

Problems solved by technology

[0002] Atrial fibrillation (AF) is the most common type of arrhythmia clinically. The main hazard of atrial fibrillation is the formation of left atrial thrombus. After the thrombus falls off, it induces acute myocardial infarction, stroke, peripheral vascular embolism and other complications, increasing the disability rate and Fatality rate, at present, more than 90% of thrombi in patients with non-valvular atrial fibrillation come from the left atrial appendage, so closing or blocking the left atrial appendage can significantly reduce the thrombosis of medical devices and reduce thromboembolic complications. It is called the left atrial appendage. There is no obvious boundary between this part and the main part of the atrium, but the inner wall of the atrium is smooth, and the comb muscle on the inner wall of the atrial appendage is developed and not smooth. The minimally invasive left atrial appendage closure surgery that has emerged in recent years is due to the different anatomical shapes of the left atrial appendage. On the one hand, it is easy to cause blood residue during and after the operation, and the ideal occlusion effect cannot be achieved; on the other hand, because the occluder is not firmly fixed, it is prone to fall off, which increases the complexity of the operation or after the operation. A better closure of the left atrial appendage has become an urgent problem in the medical field

[0003] The structure of the cardiac occluder mainly includes the front-end occluding structure and the rear-end fixing structure. At present, the following problems still exist in the use of the cardiac occluder: the size and shape of the left atrial appendage are different, and the occluder is inserted into the inner space of the left atrial appendage. The cavity is relatively laborious; the occluder lacks a good auxiliary support structure, and the occluder and the left atrial appendage are only fixed by the relative pressure exerted by the left atrial appendage muscle layer, and the occluder is not fixed enough; the occluder Send it to the opening of the left atrial appendage through a medical delivery sheath. The delivery sheath and the occluder are connected by snap-fitting. The connection is not stable enough, and the occluder is easy to fall off during delivery.

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