Self-protuberant aortic intracavity implant

Abstract

An aortic intracavity implant, which is provided with an anchoring zone at the near-end to reliably fix the implant and prevent the inner leakage, is provided. A membrane braid is used for replacing partial overlay film of the aortic intracavity implant, in the operation, a central region of the membrane braid is opposite to a left subclavian artery opening, under the pressure of aortic blood pressure the central region is inserted into the left subclavian artery, the top is sparse under the pressure effect to form an opening, thus the blood supply of the left subclavian artery can be maintained. A main body structure of the membrane braid is elliptic, and is divided into a central region and a peripheral region, no absolute boundary line is arranged between the central region and the peripheral region, the braid from the peripheral to the central region is gradually sparse. No leakage is provided at the peripheral region, and the central region is provided with an opening in the opening process. The membrane braid has no supporting effect on the aortic intracavity implant, and has the main effects: (1) guaranteeing the blood supply of main branch blood vessel after the implant isopened, and adding the anchoring zone; and (2) having no leakage at the peripheral region of the membrane braid, thus preventing the inner leakage.

Description

Technical field [0001] The invention relates to a branching device of a covered aortic cavity graft, which is mainly aimed at protecting important branch vessels of the aortic arch and stabilizing the installation of the graft in the aortic cavity. Background technique [0002] The invention is designed for the treatment of Stanford type B dissecting aneurysms. Stanford type B dissection refers to the origin of the dissection and is limited to the descending aorta. During endovascular exclusion, the length of the proximal neck vessel for type B dissection should be greater than 15 mm to ensure the stability of the graft and the patency of the left subclavian artery. For those whose proximal neck vessel length is less than 15 mm, the current main countermeasure is the reconstruction of the left subclavian artery, including two forms of extracavity and intracavity: 1. Extracavitary reconstruction refers to grafting in the aortic lumen Various bypass procedures were performed...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the occlusion of important branch vessels of the aortic arch and the stability of the installation of the aortic endograft in the use of the existing aortic endograft, the present invention provides a method for installing an aortic endograft on the existing aortic endograft Membrane-like braid, which ensures the blood supply of important branch vessels and increases the stability of graft installation

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