Integrated multi-branch interventional aortic arch stent graft

Abstract

The invention discloses an integrated multi-branch interventional aortic arch covered stent. The covered stent has a curved structure and includes an anterior arch area, an arch portion area and a posterior arch area. Formed by extension, the film bends and extends from the end of the anterior arch region to form the arch region, and the covering film continues to extend from the end of the arch region to form the posterior arch region; the greater curvature of the arch region is ellipsoidally convex. The protrusion is provided with a fixed branch that cooperates with the head and arm trunk of the human body. Two openings are arranged on one side of the fixed branch to cooperate with the left common carotid artery and the left subclavian artery; Rows of metal shelves for supporting mulch and securing branches. The invention has the advantage of being able to conform to the characteristics of the aortic arch of the human anatomy, by combining different types of main body stents and movable branch stents, it can completely cover the human aortic arch, protect the aortic blood vessels, and prevent continuous expansion and rupture of blood vessels.

Description

technical field [0001] The invention belongs to the technical field of medical cardiovascular surgery, and in particular relates to an integrated multi-branch aortic arch covered stent for intervention, which is used for endovascular treatment of aortic arch lesions and aortic arch branch arterial lesions. Background technique [0002] Cardiovascular disease is currently the number one killer threatening the health of Chinese people, and aortic aneurysm is one of the most dangerous acute and severe cardiovascular diseases. The clinical image is called "time bomb". According to the structure, aortic aneurysm can be divided into true aortic aneurysm, false aortic aneurysm and dissecting aneurysm. According to the site of occurrence, aortic aneurysm can be divided into ascending aortic aneurysm, aortic arch aneurysm, descending aortic aneurysm or thoracic aortic aneurysm (origin is distal to the left subclavian artery) and abdominal aortic aneurysm. Aortic dissection (AD) ref...

AI Technical Summary

Problems solved by technology

[0006] In recent years, some research centers have also devoted themselves to the study of endovascular stents in the ascending aorta and arch, but most of the stent designs are too simple and rough, and lack the hemodynamics, anatomy, and biomechanics of the ascending aorta and arch. Or the design of the stent is too complicated, the operation steps are cumbersome and difficult to master, it is not suitable for clinical application, and the problem of vessel-stent compatibility cannot be solved

In conclusion, at present, arch vascular endoluminal stents have become an important research hotspot in the field of vascular surgery, but due to practical problems such as complex release mechanism, excessively large diameter of the delivery system sheath, and difficult compression of branch stents, no substantive results have been achieved. breakthrough

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