Patent foramen ovale plugging device with two flat end faces and manufacturing method thereof

Abstract

The invention discloses a patent foramen ovale plugging device with two flat end faces and a manufacturing method thereof. The patent foramen ovale plugging device comprises a main body part, a flow blocking part and a suture line, wherein the main body part is of a net body structure and comprises a first disc-shaped part, a tubular part and a second disc-shaped part which are sequentially connected, and the two ends of the tubular part are connected to the center of the first disc-shaped part and the center of the second disc-shaped part respectively; the flow blocking part is at least two layers of degradable films or non-degradable films used for blocking blood flowing; after the opening is closed through a closing line, the outer net face of the first disc-shaped part and the outer net face of the second disc-shaped part are both continuous and flat net-shaped faces; the patent foramen ovale plugging device is made of a special mold; the special mold comprises a core mold; and the core mold comprises a first cover body, a center part, a second cover body and a center column body. Shaping is carried out through the special mold, and the patent foramen ovale plugging device is simple, fast and low in cost. The two flat end faces are beneficial to accelerating the endothelialization process of the surface of the plugging device, and the patent foramen ovale position can be repaired by the tissue of the patent foramen ovale position earlier.

Description

technical field [0001] The invention relates to the field of occluders, in particular to a patent foramen ovale occluder with flat ends 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...

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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

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