Membrane-carrying stent

Abstract

The invention relates to the field of medical instruments, and discloses a membrane-carrying stent, which comprises: a stent main body, which is a hollow grid structure; and a membrane structure, which is arranged in the stent main body, and the near end of the membrane structure is fixed on the stent main body. The near end of the membrane structure is fixed on the stent main body, and other parts of the membrane structure are kept in a free state on the stent main body, so that the compliance of the membrane-carrying stent is improved, meanwhile, the connecting process difficulty of the membrane-carrying stent is reduced, and membrane structures in different shapes can be conveniently processed to adapt to blood vessels in different shapes.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a membrane-carrying stent. Background technique [0002] Aneurysm is a common cardiovascular and cerebrovascular disease, and once ruptured, the fatality rate is extremely high. Larger aneurysms have a higher risk of rupture. Even if the ruptured aneurysm is treated conservatively, the risk of rupture after stabilization is also higher. This type of aneurysm usually has an acute onset and a short course of disease, which is likely to cause a poor prognosis. There are many causes of aneurysm formation, most of which are related to arteriosclerosis, hypertension, muscle fiber dysplasia, immune factors, genetic factors, etc., and its pathogenesis is not yet completely clear. There is no completely unified understanding of the treatment of aneurysms, and medical treatment is the basis. The treatment of aneurysms mainly includes surgical clipping of aneurysms and interventional endovas...

AI Technical Summary

Problems solved by technology

However, if the metal coverage of the stent is too high, there will be problems of high radial tension and poor compliance; it may hinder or even block the blood flow of peripheral vessels, causing additional harm to the patient; the blood pressure near the aneurysm is very high, The mesh of the stent is prone to aneurysm rupture and bleeding under the continuous washing of blood flow, etc.

[0005] The covered stents in the prior art can solve some of the above-mentioned problems of the bare metal stents, but the inventors have discovered new problems in the process of manufacturing and processing, which are mainly reflected in the following aspects: 1. It is difficult to process the covered metal stents 2. The thick film is difficult to load and transport

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