Integrated multiple-branch interventional aorta arch covered stent

Abstract

The invention discloses an integrated multiple-branch interventional aorta arch covered stent. The covered stent is of a crank-shaped structure and comprises a front arch zone, an arch portion zone and a rear arch zone. The front arch zone is formed by a section of tubular covering membrane extending along one end of the stent, the covering membrane extends from the tail end of the front arch zone in an arched-bent mode to form the arch portion zone, and the covering membrane continuously extends from the tail end of the arch portion zone to form the rear arch zone. The greater-curvature side of the arch portion zone is an ellipsoidal protrusion, a fixed branch matched with the brachiocephalic trunk of a human body is arranged on the protrusion, and two holes matched with the left common carotid artery and left subclavian artery are sequentially formed in one side of the fixed branch. Multiple rows of metal frames for supporting the covering membrane and the fixed branch are arranged in the covering membrane and the fixed branch in a lined mode. The integrated multiple-branch interventional aorta arch covered stent has the advantages of being capable of conforming to the characteristics of the aorta arch portion of human anatomy, completely covering the aorta arch of the human body by utilizing different models of main body supports and movable branched stents in a combined mode and having aortic artery protection and continuous angiectasis and angiorrhexis prevention effects.

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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