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Check valve membrane coated stent

A membrane stent and one-way valve technology, which is applied to stents, blood vessels, and devices of human tubular structures, etc., can solve the problems of inability to quickly distinguish the covered vascular stent, collateral vessel lesions, etc., and reduce the probability of forming eddy currents. The effect of reducing the chance of recurrence and preventing the formation of eddy currents

Pending Publication Date: 2017-11-10
ZHUHAI TON-BRIDGE MEDICAL TECH CO LTD
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Problems solved by technology

[0006] In view of the above problems, the present invention proposes a one-way valve membrane stent graft, which is used to solve the problem of countercurrent loop formation in the aneurysm when the membrane has holes in the prior art, and the formation of lesions in side branch vessels when the membrane has no holes and the partial overlay Membrane vascular stents can not quickly distinguish the problem of the graft surface

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  • Check valve membrane coated stent
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Embodiment Construction

[0023] The above and other technical features and advantages of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0024] The invention provides a one-way valve membrane-grafted stent. One type of the main body of the traditional covered stent is a porous membrane, which can realize blood flow in the side branch vessels. At the same time, the blood flow of the intracranial aneurysm will also fluctuate, allowing blood to flow out of the aneurysm through the small hole. into blood vessels. Repeatedly, a reverse flow circuit is formed in the aneurysm, which promotes the enlargement of the intracranial aneurysm and the treatment fails; when the main body of the stent is covered with a non-porous membrane, the blood in the intracranial aneurysm will not flow into the artery, but the artery When the red ...

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Abstract

The application of the invention discloses a check valve membrane coated stent. The check valve membrane coated stent comprises a coating membrane, a stent main body and a periosteal flap, a through hole is formed in the coating membrane, the stent main body is used for supporting the coating membrane, the periosteal flap is connected to the through hole of the coating membrane, blood in the coating membrane flows into an arterial aneurysm and a collateral branch of a blood vessel through the open periosteal flap, and the periosteal flap is closed when the blood in the arterial aneurysm flows back. The check valve membrane coated stent is easy to manufacture, convenient to operate, easy to realize and low in cost, a one-way membrane stops the blood flowing into the artery blood vessel from the arterial aneurysm, and the breathing and the internal and external gas interaction of the blood vessel are not affected.

Description

technical field [0001] The invention relates to an intracranial vascular blood shunting device, in particular to a one-way valve membrane-grafted stent. Background technique [0002] In the early 1990s, Parodi performed the first endovascular exclusion of abdominal aortic aneurysm in the world, and reported the clinical application of stent-graft in the treatment of 5 cases of abdominal aorta, which established a milestone in the history of endovascular treatment . With the continuous innovation of technology, the superiority of stent grafts in the treatment of intracranial arterial diseases has been increasingly recognized, and its application has great feasibility, such as intracranial aneurysms, arteriovenous fistulas and other vascular diseases. Intracranial aneurysm mainly occurs when the wall of the intracranial arterial vessel is thinned, resulting in abnormal expansion, forming a cystic bulge. With the impact of blood flow, the wall of the aneurysm gradually thins,...

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Application Information

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IPC IPC(8): A61F2/07
CPCA61F2/07A61F2002/072
Inventor 李峥杨华俞佳威张琪赵中
Owner ZHUHAI TON-BRIDGE MEDICAL TECH CO LTD
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