Covered stent suitable for thoracic aortic aneurysm and thoracic aortic dissection aneurysm

Abstract

The invention discloses a covered stent suitable for thoracic aortic aneurysm and thoracic aortic dissection aneurysm. The covered stent comprises a main path stent and at least one group of movable stents. The main path stent comprises a first cylinder part and a second cylinder part. A vertical partition is arranged in the first cylinder part, and the first cylinder part is divided into a firstflow guide cavity and a second flow guide cavity by the vertical partition. The sectional area of the first flow guide cavity is larger than that of the second flow guide cavity. The second cylinder part and the first cylinder part are integrally formed and communicated with the first flow guide cavity. The movable stent comprises a connecting part and a flow guide part, the connecting part and the flow guide part are integrally formed, and the connecting part is arranged in the second flow guide cavity and tightly attached to the inner wall of the second flow guide cavity. The stent can effectively solve the problem that blood internal leakage is likely to be caused due to the fact that the existing chimney stents are not tightly attached and the chimney stents and aorta are not tightly attached.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a covered stent suitable for thoracic aortic aneurysms and thoracic aortic dissection aneurysms. Background technique [0002] Thoracic aortic dissection (Aortic dissection) refers to the fact that the blood in the aortic lumen enters the aortic media from the aortic intima tear, separates the media, and expands along the long axis of the aorta to form the aortic wall. The two chambers are separated. The incidence rate is about 5 to 10 cases per million population per year, and the ratio of male to female incidence is 2 to 5:1. Common in people aged 45 to 70. The fatality rate increases by about 1% per hour within 2 days after the onset, and 65% to 70% die of cardiac tamponade and arrhythmia in the acute stage, so early diagnosis and treatment are very necessary. [0003] The traditional treatment for this disease is thoracotomy and total aortic arch artifi...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a covered stent suitable for thoracic aortic aneurysm and thoracic aortic dissection aneurysm, which can effectively solve the problems between the existing chimney stent and between the chimney stent and the aorta. Arteries are not tightly fitted, which can easily cause blood leakage

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