Temporary closure device for heart defects

Abstract

A temporary closure device for heart defects comprises a disc-like net rack, wherein the disc-like net rack is integrally formed by weaving fine wires, the fine wires form a closure head in the middle of the bottom of the disc-like net rack, a connecting part is fixed at the tail end of the closure head, and the surface of the disc-like net rack is covered with a flow resisting film; the height of the disc-like net rack is 2-3 mm. After the temporary closure device is conveyed to a defect position, the disc-like net rack is unfolded and enabled to be located on the left side of the defect position, a steel conveying cable is pulled to enable the disc-like net rack to be tightly attached to the left side of the defect position, and the defect position is temporarily closed; then, physiological indexes of a patient can be tested. After a test ends, the steel conveying cable is pulled to contract the disc-like net rack. The disc-like net rack is temporarily closed in the defect position instead of being tightly clamped in the defect position, after the steel conveying cable is pulled, the disc-like net rack enters a long conveying sheath through the closure head, and picking is facilitated.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a temporary closer for heart defect. Background technique [0002] Congenital patent ductus arteriosus and atrial and ventricular septal defects are several common uncomplicated congenital heart malformations. With the development and maturity of percutaneous interventional therapy technology and the improvement of implant materials in recent years, the application of classic An increasing number of patients are treated with transcatheter closure for such uncomplicated congenital heart disease. [0003] The existing heart defect occluder adopts a self-expanding double-disc structure made of superelastic nickel-titanium alloy. The double-disk structure is attached with a polymer biofilm, and the mesh structure is filled with polyester or polytetrafluoroethylene. . When placing, choose the appropriate size of cardiac defect occluder according to the preoperative echocardiographic...

AI Technical Summary

Problems solved by technology

However, the double-disk structure of the above-mentioned cardiac occluder is tightly combined with the defect position, and it is difficult to remove it after it is fixed, resulting in a high risk of surgery

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