Porous atrial septal defect plugging device

Abstract

The invention discloses a porous atrial septal defect plugging device and a production method, and relates to the technical field of medical instruments. The porous atrial septal defect plugging device comprises a supporting part and a bluff body, wherein the bluff body is embedded in the center of the supporting part, a layer of absorbable polymer elastic film is plated on the periphery of the supporting part, and the bluff body is provided with preformed holes with different bore diameters and provided with a plugging umbrella; the porous atrial septal defect plugging device can be stably placed at a position with atrial septal defect, the absorbable polymer elastic film is plated on the periphery of the device, and the bluff body is provided with the preformed holes with different borediameters and a conveying structure; the structure is reasonable in design, plugging is firm and stable, systemic-pulmonary arterial shunt can be adjusted, postoperative complications are reduced, andthe porous atrial septal defect plugging device is suitable for being generalized and used in medical mechanisms.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an atrial septal defect occluder. Background technique [0002] Atrial septal defect (ASD) is a common congenital heart malformation in clinical practice. It is an abnormality of the original atrial septum during embryonic development, resulting in a gap between the left and right atrium. ASD can occur alone or coexist with other types of cardiovascular malformations. It is more common in women, with a male to female ratio of about 1:3. Due to the presence of shunt at the atrial level, it can cause corresponding hemodynamic abnormalities. For patients with atrial septal defect, because the pressure of the left atrium is higher than that of the right atrium, part of the blood in the left atrium flows to the right atrium through the atrial septal defect, which increases the burden on the right heart system, causes right ventricular hypertrophy, and reduces the blood volume...

AI Technical Summary

Problems solved by technology

[0003] At present, the interventional therapy method of occluding heart defects with an occluder is the first choice for patients with heart defect indications due to its mild trauma, safe operation, and definite short-to-medium-term curative effect; thin waist-shaped atrial septal defects are usually used on the market The occluder is mushroom-shaped, and the upper and lower disks are symmetrically circular. Although the self-centering function can be realized, the occluder can be placed in the most stable position of the heart to achieve the purpose of treatment; however, the existing atrial septal defect closure The occluder has the following defects: 1) the left and right atria are completely blocked after the current occluder is installed, and for patients with severe pulmonary hypertension, it will aggravate its pulmonary hypertension and right heart failure, and even endanger life; 2) some occlusion The occluder has reserved holes (CN 104224246), but the single reserved hole cannot be adjusted in diameter and has a single function. Once it is blocked, it will not be able to achieve the purpose; 3) after the existing occluder is placed, it is difficult to be stably stuck in the interatrial septum The "soft edge" of the defect will cause the occluder to fall off during and after the operation, resulting in the failure of atrial septal defect closure; 4) The support part of the occluder is made of metal wire, and as the heart beats, it will The lesion area produces a certain degree of wear and tear

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