Bilateral single-layer umbrella type plugging device

Abstract

The invention discloses a bilateral single-layer umbrella type plugging device, which comprises an elastic net and sealing films, wherein the elastic net is a high-elasticity butterfly-shaped elastic net processed by using a nickel-titanium alloy bar; the middle part of the elastic net is provided with a cylindrical slim waist; the left end and the right end of the slim waist are connected with a left trumpet-shaped umbrella and a right trumpet-shaped umbrella constructed by reticulate patterns respectively; the diameters of the left umbrella and the right umbrella are 3-10 millimeters larger than that of the slim waist; a screw hole is formed in one end of the slim waist; and a layer of sealing film is sewn on the respective outer side faces of the left umbrella and the right umbrella respectively. The plugging device has a good shape memory function; when the left umbrella and the right umbrella are folded, the plugging device is deformed into a strip, so that people can place the plugging device into a conduit; and when being pushed out of the conduit, the plugging device can restore the original butterfly shape instantly. The bilateral single-layer umbrella type plugging device has the beneficial effects that the weight of the plugging device is reduced by 50 percent, and the plugging device has no welding points; and meanwhile, the space occupied by the plugging device in a human body is reduced, and the risk of injuring peripheral tissues by the plugging device is reduced.

Description

technical field [0001] The invention relates to a medical occluder, in particular to a double-sided single-layer umbrella-type occluder, which is mainly used for repairing congenital atrial and ventricular septal defects in interventional operations. Background technique [0002] Congenital heart disease Atrial septal defect and ventricular septal defect are common congenital heart diseases. The characteristic of atrial septal defect is that the interval between the left and right atria fails to close normally, and blood flows between the left atrium and the right atrium; Septal defects are characterized by the failure of the septum between the left and right ventricles to close properly, allowing blood to flow between the left and right ventricles. Because the pressure in the left atrium is higher than that in the right atrium, part of the blood from the left atrium is shunted to the right atrium through the atrial septal defect. Due to the leakage of blood, the burden on ...

AI Technical Summary

Problems solved by technology

[0005] At present, due to the structural problems of the occluder itself, the occluder is relatively large in size and heavy in weight, and takes up a lot of space in the heart, which affects the normal operation of the heart function.

On the other hand, there are many bending parts of the metal wires that make up the elastic mesh, so it is easy to break the wire mesh of the occluder during and after the operation, damage the patient's body tissue and form a local thrombus

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