Aortic-arch covered stent-graft vessel

Abstract

The invention discloses an aortic-arch covered stent-graft, which comprises an aortic stent-graft and three branch artery stent-grafts, wherein a sunk part is arranged in the aortic stent-graft and comprises a left-side wall close to a proximal end, a right-side wall far away from the proximal end and a bottom wall for connecting the left-side wall with the right-side wall; two openings are arranged on one side wall in the left-side wall with the right-side wall of the sunk part, and one or two openings are arranged in the other side wall; an inner chimney graft with a caliber comparative with the openings is fixedly arranged in each opening; and the branch artery stent-grafts are respectively arranged in the chimney grafts. The stent-graft system with the structure can isolate aortic lesions involving the aortic arch and the ascending aorta and reconstruct the blood flow of branch arteries, is suitable for various normal and changing blood vessels, has a wide range of application, avoids customized stents, and can be in mass production. The time is effectively saved, and the operation is easy.

Description

technical field

[0001] The invention relates to the field of implantable blood vessels, and more specifically refers to an aortic arch covered stent-type blood vessel. Background technique

[0002] Thoracic aortic aneurysm and aortic dissection are catastrophic diseases that seriously threaten the lives of the general public. Without active treatment, the disability rate and mortality rate are high. In recent years, with the increase in the incidence of hypertension, hyperlipidemia, hyperglycemia, and trauma, the incidence of thoracic aortic aneurysm and aortic dissection has increased significantly. At present, the use of aortic endovascular stent repair has good curative effect and has been developed rapidly. However, aortic arch aneurysms and aortic dissection involving the brachiocephalic trunk, left common carotid artery, and left subclavian artery ostium have always been difficult points in this treatment technique. In order to ensure the firm fixation of the ste...

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