Combined ascending aortic intracavitary isolation implant

Abstract

The invention relates to the technical field of medical devices, and in particular relates to a novel combined intracavitary isolation implant used for the treatment of ascending aortic dilatation diseases, which comprises a metal wire stent (1) and an artificial blood vessel (2) sutured or stuck on the inner side of the stent. The novel combined intracavitary isolation implant is characterized in that: the metal wire stent (1) is divided into the following two parts: a tubular part (11) and a protruding part (12); the tubular part is a Z-shaped stent with a coating and represents a curved bow which conforms to the physiological morphological characteristics of the ascending aorta, so that the stent can fit well with an arterial wall; the protruding part is a meshed naked stent with a spherical shape and can closely fit on the inner wall of the coronary sinus after being placed in the coronary sinus, so as to prevent the displacement of the coated stent of the tubular part. The combined intracavitary isolation implant has a simple structure, can effectively occlude the dissection tear of the ascending aorta or isolate the aneurysm in the ascending aorta, prevents the occurrence of blood internal leakage due to the looseness or displacement of the intravascular isolation implant, and ensures the blood supply to the coronary artery, the brachiocephalic trunk and other branch arteries.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to a composite aortic endoluminal isolation graft for treating ascending aortic dilation disease. Background technique [0002] Dilated diseases of the ascending aorta include ascending aortic dissection and ascending aortic aneurysm. Aortic dissection (AD) refers to a partial tear of the inner wall of the aorta, and the blood in the aortic lumen enters the aortic media from the aortic intima tear, causing the media to tear and separate, and along the length of the aorta. Axial expansion, thus forming a pathological change of true and false aortic lumens. The main harm is that the direct rupture of the false lumen or the rupture after the formation of an aneurysm causes massive hemorrhage and death, and the blood supply of important branches of the aorta is interrupted during the formation of the dissection, resulting in severe ischemic function loss of important organs and s...

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Problems solved by technology

[0004] However, because the ascending aorta is relatively thick and short, and there is a coronary artery opening supplying blood to the heart at the proximal end, and a brachiocephalic trunk opening supplying blood to the brain and right upper limb at the distal end, this morphological feature limits the existing The application of the straight tubular endoluminal graft in the ascending aorta area, the graft is difficult to be firmly anchored in the vascular cavity of the ascending aorta area, and once loosened and displaced, endoleak will occur, and the operation will fail

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