Covered stent and using method thereof

Abstract

The embodiment of the invention discloses a covered stent and a using method thereof. The covered stent comprises an inverted-Y-shaped iliac branch main body, a first main body and a second main body. The iliac branch main body comprises a cylindrical metal support and a film covering the metal support, so do the first main body and the second main body. The far-end of the first main body is connected to the iliac branch main body, and the far-end of the second main body is connected to the near-end of the first main body. The iliac branch main body has a three-way structure, and comprises an aorta chimney and two iliac branches. The aorta chimney is connected to the far-end of the first main body. By employing the covered stent, risks of stent movement and inner-leakage caused by the butt connection of a conventional iliac stent and a bifurcation stent short leg can be avoided; the operation time is shortened; the operation difficulty is reduced, risks of complications such as blood vessel erosion, perforation and laceration can be reduced; the approach application occurrence rate can be substantially reduced; and the operation difficulty for a patient whose unilateral approach is badly tortuous and narrow is reduced. The covered stent can be placed based on a blood vessel anatomy configuration, the original iliac artery bifurcation is retained, and the contralateral intervention in a later period can be carried out more easily.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a stent graft and a method for using the same. Background technique [0002] Among the causes of death from human diseases, vascular diseases are close to the first place, such as abdominal aortic aneurysm and aortic dissection in arterial diseases. Generally, such vascular diseases will not heal themselves after they occur. If proper and timely treatment is not carried out, In the end, it will rupture and bleed, and the mortality rate is very high. [0003] For diseases such as abdominal aortic aneurysm and aortic dissection, the current surgical treatment methods mainly include open surgery and endovascular repair. Stents, which isolate the diseased cavity and reestablish the blood flow path in situ. Compared with open surgery, it has gradually become the first choice for the treatment of aortic aneurysms due to its characteristics of no need for laparotomy, less trau...

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Problems solved by technology

[0006] In the embodiment of the present invention, a stent graft and its use method are provided to solve the problem of first releasing the bifurcated main body in one side of the femoral artery of the stent graft in the prior art, and then connecting the bifurcated main body and the iliac artery in the contralateral femoral artery. Branch butt joint, resulting in contralateral intervention difficulties, increased surgical difficulty and complications

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