Cardiac left atrial appendage occluder with flat ends and manufacturing method thereof

Abstract

The invention discloses a heart left atrial appendage occluder with flat end surfaces and a manufacturing method thereof. The left atrial appendage occluder includes: a main body part, a flow blocking part and a suture; the main part is a mesh structure and includes a first disc-shaped part, a first tubular part, a second disc-shaped part, and a second tubular part connected in sequence and the third disc-shaped part; the flow blocking part is at least two layers of degradable film or non-degradable film used to block the flow of blood; The outer mesh surface is a continuous and flat mesh surface; the heart left atrial appendage occluder is made of a special mold; the special mold includes a core mold; the core mold includes: the first cover, the first central part, the second central part, A central cylinder, a second cover and an annular peripheral part. The shaping is carried out through a special mold, which is simple, fast and low in cost. The smoothness of both ends is conducive to accelerating the endothelialization process of the surface of the occluder, so that the left atrial appendage of the heart can be blocked by its own tissue earlier.

Description

technical field [0001] The invention relates to the field of occluders, in particular to a left atrial appendage occluder with flat ends and a manufacturing method thereof. Background technique [0002] The left atrial appendage is an ear-shaped sac protruding from the left atrium, which is a part of the left atrium and is the main component of the left atrium. The left atrial appendage is a long tubular structure with a hook. The wall of the atrial appendage is composed of comb muscles to form trabeculae, and there are gaps between the trabeculae. There is a neck with a diameter of 10-40 mm between the left atrial appendage and the left atrium cavity, which is located between the left superior pulmonary vein and the mitral annulus, and the circumflex branch of the coronary artery is close to the base of the opening of the left atrial appendage. The unique hook-like structure of the left atrial appendage and the abundant muscle trabeculae on the intima are likely to cause b...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the long-term risk problem of the left atrial appendage occluder used clinically, and to overcome the high cost and the protruding connection points on both ends of the occluder in the prior art to make the occluder Defects of slow endothelialization of the surface and long release length of the occluder, providing a heart left atrial appendage occluder with flat ends and a manufacturing method thereof

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