Patent ductus arteriosus occluder with flat ends and manufacturing method thereof

Abstract

The invention discloses a heart arterial catheter patent occluder with smooth two-end surfaces and a manufacturing method thereof. The patent ductus cardiac occluder includes: a main body part, a flow blocking part and sutures; the main part is a mesh structure and includes a frustum part and an end connected to the frustum part and protrudes outward along the circumference of the frustum part The disc-shaped part; the flow blocking part is at least two layers of degradable film or non-degradable film used to block blood flow; after the closing line is closed, the end of the disc-shaped part away from the frustum and the frustum of the disc are away from the disc-shaped One end of the part is a continuous flat mesh surface; the patent ductus cardiac 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 an annular peripheral components. 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 ductus arteriosus can be repaired by self-tissue earlier.

Description

technical field [0001] The invention relates to the field of occluders, in particular to a patent occluder for cardiac arterial ducts with flat end surfaces and a manufacturing method thereof. Background technique [0002] Patent ductus arteriosus is one of the common congenital heart diseases, which refers to a congenital abnormal channel between the aorta and the pulmonary artery, mostly located between the aortic isthmus and the root of the left pulmonary artery. Patent ductus arteriosus is mainly formed during the growth and development of the fetus. Due to certain factors affecting the development of the heart, a patent ductus arteriosus is formed. In patients with a patent ductus arteriosus, blood usually flows from the aorta through the patent ductus arteriosus into the pulmonary artery, and blood that enters the pulmonary circulation returns to the left atrium and left ventricle. This results in hypertrophy and enlargement of the left atrium and left ventricle, even...

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 ductus occluder, and to overcome the high cost and the 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 catheter occluder with flat ends and a manufacturing method thereof

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