Degradable cardiac patent foramen ovale occluder and manufacturing method thereof

Abstract

The invention discloses a degradable cardiac patent foramen ovale occluder and a manufacturing method thereof. The degradable patent foramen ovale occluder is made of degradable silk. The patent foramen ovale occluder includes: a main body part, a flow blocking part and a suture; the main body part includes a mesh body and a connecting part. The mesh body includes a first disc-shaped part, a tubular part and a second disc-shaped part connected in sequence, and the two ends of the tubular part are respectively connected to the center of the first disc-shaped part and the second disc-shaped part; The parts are at least two layers of degradable or non-degradable films used to block blood flow; wherein, the patent foramen ovale occluder is made of a special mold; the special mold includes a mandrel; the mandrel includes : a first cover, a central part, a second cover and a central cylinder. The patent foramen ovale occluder is shaped by a special mold, which is simple, quick and low in cost.

Description

technical field [0001] The invention relates to a degradable heart patent foramen ovale occluder and a manufacturing method thereof. Background technique [0002] Patent foramen ovale is one of the common congenital heart diseases. The 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, called the second septum or secondary septum, and this septum is also inward. The membrane cushion grows to cover the second chamber hole, but does not fuse with the endocardial cushion, forming an oval hole called foramen ovale. After the fetus is born, the foramen ovale generally closes within the first year after birth. If the foramen ovale is still not closed in children older than three years old, it is called a patent foramen ovale. In 20% to 25% of adults, the foramen ovale does not close completely, leaving a small gap or hole through which the probe ca...

AI Technical Summary

Problems solved by technology

[0009] 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 of the prior art and the poor self-expansion recovery of the degradable occluder Defects, providing a degradable cardiac patent foramen ovale occluder and its manufacturing method

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