Atrial septal defect plugging device and interventional method thereof

Abstract

An atrial septal defect plugging device comprises a left atrium surface umbrella disk, a waist part and a right atrium surface umbrella disk; the waist part of the plugging device is placed in the atrial septal defect; the left side umbrella disk and the right side umbrella disk clamp the atrial septum to help to maintain the plugging device stable. The edge of the left side umbrella disk of the plugging device is petal-shaped, and the petal gap faces towards the bicuspid valve while the stability of the plugging device is maintained, so that plugging failure caused by the fact that the bicuspid valve is pressed by the traditional plugging device. According to the petal shape design, the use amount of silk for weaving the plugging device can be reduced, so that the volume of the plugging device is reduced, fewer conveying sheathing canals can be used, and blood vessel complications are reduced. The plugging device provided by the invention changes the structure of the left side plugging umbrella of the traditional plugging device by aiming at the condition that the atrial septal defect is close to the bicuspid valve so as to prevent the plugging device from oppressing the valve leaflet of the bicuspid valve.

Description

technical field [0001] The invention belongs to the field of biomedical devices, and in particular relates to an atrial septal defect occluder and an intervention method thereof. Background technique [0002] Atrial septal defect (ASD) occlusion is an interventional congenital heart disease treatment that was applied earlier. At present, relatively mature experience has been accumulated in China, and it can be completed under the guidance of radiation or ultrasound alone. It has become an important treatment method for atrial septal defect, but some patients fail to occlude the mitral valve due to the short distance between the atrial septal defect and the mitral valve. figure 1 Schematic diagram of the structure of compressing the mitral valve when the traditional occluder closes the defect, as shown in figure 1 As shown, the left atrial surface occlusion umbrella is compressed on the mitral valve leaflet, if a smaller occluder is forced to be selected. Even if the occlud...

AI Technical Summary

Problems solved by technology

[0002] Atrial septal defect (ASD) occlusion is an interventional congenital heart disease treatment that was applied earlier. At present, relatively mature experience has been accumulated in China, and it can be completed under the guidance of radiation or ultrasound alone. It has become an important treatment method for atrial septal defect, but some patients fail to occlude the mitral valve due to the short distance between the atrial septal defect and the mitral valve. figure 1 Schematic diagram of the structure of compressing the mitral valve when the traditional occluder closes the defect, as shown in figure 1 As shown, the left atrial surface occluder is pressed on the mitral valve leaflet, if a smaller occluder is forced to be selected

Even if the occluder does not compress the mitral valve, it will increase the risk of occluder falling off due to the small diameter

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