Left auricle occluder with bionic spinule attachment structures

Abstract

The invention relates to a left auricle occluder with bionic spinule attachment structures. The left auricle occluder at least comprises an attachment frame; the attachment frame includes a pluralityof elastic skeletons and a plurality of bionic spinule attachment structures; under a natural unconstrained state, the plurality of skeletons diverge outwards from the center and define a three-dimensional structure, and the attachment frame has anatomical form adaptability; the bionic spinule attachment structures are arranged on outer surfaces of the skeletons; each of the bionic spinule attachment structures has a form of imitating sparse spinules on the surface of a plant; each bionic spinule attachment structure includes a spinule root and a spinule; each spinule consists of a spinule body and a spinule tip; each spinule is in a straight line shape or a J shape or a combination of the straight line shape and the J shape; and the spinule bodies and / or the spinule tips can touch left auricle inner cavity tissues, thus realizing an attachment-type anchoring function. The left auricle occluder has a wide adaption range, has no injury during anchoring, is firm, has high safety, has excellent occluding effectiveness, and also facilitating realization of personalized customization aiming at clinical demands of patients.

Description

technical field [0001] The invention relates to a medical device, in particular to a left atrial appendage occluder with a bionic micro-thorn attachment structure. Background technique [0002] Atrial fibrillation (abbreviated as atrial fibrillation) is one of the most common clinical arrhythmias, with an incidence rate of 1% to 2% in the population. At the same time, the incidence of atrial fibrillation is also increasing with age. Some research reports point out that , the incidence of atrial fibrillation among people over the age of 80 reaches 10% to 17%. In addition to the discomfort caused by symptoms such as palpitations, dizziness, and shortness of breath, the main hazard of atrial fibrillation is the formation of thrombosis in the heart. After the thrombus falls off, it can lead to complications such as stroke, organ embolism, and peripheral vascular embolism. At present, there are more than 10 million patients with atrial fibrillation in my country, about 70% of wh...

AI Technical Summary

Problems solved by technology

The barb can penetrate into the inner wall of the left atrial appendage, provided that the support network inside the barb provides radial support, and the support network is usually a regular structure of rotation, which cannot adapt to various anatomical shapes of the left atrial appendage. In reality, the left atrial appendage is absolutely Most of them are flat, shallow mouth, and multi-lobed, so they are even more difficult to adapt. Even if they can be inserted, the self-centering ability is insufficient, the sealing performance is poor, and residual shunts are formed; at the same time, the barb structure itself also has design defects: first, the left atrial appendage The inner wall is very thin, and the barbed structure is easy to pierce the left atrial appendage, which may easily cause risks such as pericardial effusion; in addition, the inner wall of the left atrial appendage is rich in comb muscles and muscle trabeculae, and the inner wall is thin. The opening of the left atrial appendage is mostly a non-circular flat structure, and the opening of the left atrial appendage and its inner cavity are at a certain bending angle

Just because everyone's LAA structure is different, there is currently no LAA occluder on the market that can fully adapt to the anatomical characteristics of all LAA

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