Degradable cardiac patent foramen ovale plugging device and manufacturing method thereof

Abstract

The invention discloses a degradable cardiac patent foramen ovale plugging device and a manufacturing method thereof. The degradable cardiac patent foramen ovale plugging device is made of degradable silk and comprises a main body part, a flow blocking part and a suture line. The main body part comprises a net body and a connecting piece, wherein the net body comprises a first disc-shaped portion, a tubular portion and a second disc-shaped portion which are sequentially connected, and two ends of the tubular portion are respectively connected to the centers of the first disc-shaped portion and the second disc-shaped portion; the flow blocking part is at least two layers of degradable films or non-degradable films for blocking blood flowing; the degradable cardiac patent foramen ovale plugging device is made of a special die; the special die comprises a core die; and the core die comprises a first cover body, a central part, a second cover body and a central column body. The degradable cardiac patent foramen ovale plugging device is shaped through the special die, and the degradable cardiac patent foramen ovale plugging device 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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