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 ho

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  • Check valve membrane coated stent
  • Check valve membrane coated stent
  • 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 present application discloses a one-way valve membrane-covered stent, comprising: a membrane, the membrane is provided with a through hole; a bracket body, the bracket body is used to support the membrane; a valve, the membrane The flap is connected to the through hole of the covering membrane, and the blood flow inside the covering membrane can flow into the aneurysm and vascular side branches through the opened membrane valve. When the blood flow in the aneurysm returns The valve can be caused to close. The invention has the advantages of simple operation, low cost and easy realization, and the one-way membrane can block the blood flow from the aneurysm into the arterial blood vessel without affecting the respiration of the blood vessel and the gas interaction inside and outside.

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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