Heart septal defect stopper with self regulating function

Abstract

The present invention relates to one kind of heart septa defect stopper with self regulating function includes a right disc of double layer contracting metal net, and a left disc comprising two or more supporting metal rods and coating film. The film -coated disc has its support rods penetrating the meshes of the metal net disc for connection. In the connection between the two discs, there is universal joint to make the interval between the two discs capable of being altered properly, so that the connection possess self adapting function and the two discs may be attached closely to the valve with heart septa defect resulting in excellent stopping effect. The present invention can also lower the thrombosis rate and facilitate the doctorí»s operation.

Description

technical field [0001] The present invention relates to a blocking device for treating congenital heart disease, especially for patients suffering from patent foramen ovale (PFO) and atrial septal defect (ASD), and is also suitable for patent ductus arteriosus (PDA) and patients with ventricular septal defect (VSD). Background technique [0002] Congenital heart disease includes patent foramen ovale (PFO), atrial septal defect (ASD), patent ductus arteriosus (PDA) and ventricular septal defect (VSD). Among them, patent foramen ovale and atrial septal defect are residual unclosed interatrial holes between the left and right atria, and blood may flow between the two atria. However, the size of the hole of the patent foramen ovale is generally smaller than that of the atrial septal defect, and the hole of the valve defect does not extend vertically to the valve wall, that is, the hole of the left atrial valve defect and the hole of the right atrial valve defect are not concent...

AI Technical Summary

Problems solved by technology

However, the left disc is not coated, and the entire metal mesh of the left disc is completely exposed to the blood, which is likely to cause the formation of thrombus and the release of harmful metal elements; because the left and right discs are integrated, they cannot adapt well to the shape of the defect hole. Automatically adjust the angle, and during the operation, when the left disc releases the sheath tube, the left disc cannot be fully opened, which increases the difficulty of the doctor's operation; under the existing technical conditions and operating methods, it is difficult to accurately determine the location of the defect hole Size and shape, due to the limitation of the waist size, it is more difficult for doctors to choose the type of occlusion device. If the size is too large, the occlusion device will form a gourd shape, resulting in poor closure and affecting the surgical effect

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