Plugging device for far end tears of aortic dissection

Abstract

The invention discloses a plugging device for far end tears of aortic dissection. The plugging device comprises a bare stent system and a plugging device body. A bare stent is accurately positioned and released by a bare stent releasing device, and the axial length can be limited and fixed by limiting rods; the plugging device body is composed of a big disc, a small disc and a short waist, the bigdisc and the small disc are in an arc shape from overlooking, a circle of bent hooks pointing to the circle center are arranged on the inner side of the small disc, the section of the short waist canbe in different shapes, and the contact surfaces of the short waist with the big disc and the small disc are sewn and wrapped by flexible blood impermeable materials. The plugging device is used forplugging the far end tears of the aortic dissection, can be matched with the tears of the dissection in shape, reduce internal hemorrhage and the risk of falling of the plugging device body, reduce hurt to inner walls of blood vessels by the big disc and the small disc, and adapt to the pathogenic structures of existing branched blood vessels nearby the tears, and reduces physical hurt to the inner wall of a false lumen by the big disc located in the false lumen.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a device for blocking the distal opening of an aortic dissection. Background technique [0002] At present, aortic disease has become a cardiovascular disease that seriously threatens human health. Among them, aortic dissection is a catastrophic disease. The aortic media separates the media and expands along the long axis of the aorta to form a true and false two-chamber separation of the aortic wall. [0003] At present, minimally invasive interventional treatment of aortic dissection has been widely used clinically due to its advantages of less trauma, shorter operation time and less blood transfusion. However, there are usually multiple breaches in aortic dissection, and they are distributed next to important branch arteries. In endovascular treatment, the first breach is covered with a stent-type artificial blood vessel to prevent blood from continuing to...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above-mentioned problems, the present invention proposes a novel structure of aortic dissection distal breach closure device to solve the problems of the dis...

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