A device for blocking the distal opening of aortic dissection

Abstract

The invention discloses an aortic dissection distal breach occlusion device, which comprises a bare stent system and an occluder. The bare stent is accurately positioned and released by the bare stent delivery device, and the axial length can be limited and fixed by the limit rod; the occluder is composed of a large plate, a small plate and a short waist. The circle points to the hook at the center of the circle, the short waist section is of different shapes, and the contact surface with the large and small plates is sewn and wrapped by flexible blood-impermeable material. The invention is used for the closure of the distal breach of aortic dissection, which can match the shape of the dissection breach, reduce the occurrence of endoleak and the risk of occluder falling off, reduce the damage to the inner wall of the blood vessel caused by the large and small discs, and at the same time adapt to the breach There are pathological structures of branch vessels nearby, which can reduce the physical damage of the large disc located in the false lumen to the inner wall of 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 distal breach of aortic dissection being left open, the false lumen caused by reflux blood flow is not easy to form thrombus, etc. In order to achieve accurate and effective breach sealing effect

Images