Cardiac patent foramen ovale occluder with flat ends and manufacturing method thereof

Abstract

The invention discloses a heart patent foramen ovale occluder with flat two-end surfaces and a manufacturing method thereof. The patent foramen ovale occluder includes: a main body part, a flow blocking part and a suture thread; the main part is a mesh structure and includes a first disc-shaped part, a tubular part and a second disc-shaped part connected in sequence, and the tubular part The two ends are respectively connected to the center of the first disc-shaped part and the second disc-shaped part; the flow blocking part is at least two layers of degradable or non-degradable films used to block blood flow; after being closed by the closing line, the second The outer mesh surfaces of the first disc-shaped part and the second disc-shaped part are continuous and flat mesh surfaces; the patent foramen ovale occluder is made of a special mold; the special mold includes a mandrel; the mandrel includes: the first A cover, a central part, a second cover, and a central column. 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 patent foramen ovale of the heart can be repaired by its own tissue earlier.

Description

technical field [0001] The invention relates to the field of occluders, in particular to a patent foramen ovale occluder with flat end surfaces and a manufacturing method thereof. Background technique [0002] Patent foramen ovale is one of the common congenital heart diseases. Patent foramen ovale is mainly formed during the growth and development of the fetus. During embryonic development, a sickle-shaped septum grows on the right side of the first septum, which is called the second septum or secondary septum. The membrane cushion grows in the direction to cover the second chamber hole, but does not fuse with the endocardial cushion, forming an oval hole called the foramen ovale. After the fetus is born, the foramen ovale is generally closed within the first year after birth. If the foramen ovale is not closed in children older than three years old, it is called patent foramen ovale. In 20% to 25% of adults, the foramen ovale does not close completely, leaving a small fi...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problem of long-term risk in the existing clinically used patent foramen ovale occluder, and to overcome the high cost and protruding connection points on both ends of the occluder in the prior art. The defects of slow endothelialization on the surface of the occluder and long release length of the occluder provide a patent foramen ovale occluder with flat ends and a manufacturing method thereof

Images