Anti-i-type endoleak stent-graft system with helical villus structure

Abstract

The invention relates to an I type-endoleak-preventing stent graft system with a spiral villus structure. The I type-endoleak-preventing stent graft system for sealing I type endoleak is characterized by comprising a metal mesh support layer matched with the shape of an artery blood vessel, a covering layer covering the metal mesh support layer and villus layers distributed on the proximal part or on both the proximal part and the telecentric part of the outer side of the covering layer. The villus layers fill the gap formed between an inner wall and the covering layer under the elasticity of the villus layers. Each villus layer is provided with a plurality of villus inside, and each villus is spiral. The I type-endoleak-preventing stent graft system can seal I type endoleak.

Description

technical field [0001] The invention relates to an anti-type I endoleak stent graft system with a spiral villi structure, which belongs to the field of medical devices. Background technique [0002] Aneurysm is one of the most common vascular diseases that cause disability and death. It can be found in any artery in the body, and it is more common in the elderly. Aneurysms can have a variety of sizes, shapes, and distributions, and the Ad Hoc Committee on Reporting Standards of the Society for Vascular Surgery defines an aneurysm as a permanent confinement of an arterial vessel whose diameter exceeds 50% of the normal arterial diameter Sexual expansion for classification and standardization for clinical decision-making. [0003] The earliest record of attempting to treat aneurysms dates back to the 3rd century AD. Until 1888, Matas et al. completed the first real aneurysm repair, that is, ligated branch arteries in the aneurysm cavity of the brachial aneurysm. In 1951, Dub...

AI Technical Summary

Problems solved by technology

No matter which of the above treatment methods is adopted, there is not only the problem of success rate, but also the problem of a large increase in operation time and medical expenses

Moreover, the prolongation of operation time increases the intraoperative risk and the incidence of postoperative infection, and the high medical expenses bring a high economic burden to patients and occupy more social resources.

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