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Anti-endoleak stent-graft system with villous structure

A technology of grafts and villi, applied in the field of anti-endoleak stent-graft system, can solve the problems of patients' intraoperative risks, increased incidence of postoperative infection, increased operation time and medical expenses, and multiple social resources

Inactive Publication Date: 2018-05-08
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the above-mentioned endoleak occurs, no matter which treatment method 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, and the prolongation of operation time increases the risk of patients during operation and the incidence of postoperative infection. High medical expenses bring high economic burden to patients and take up more social resources

Method used

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  • Anti-endoleak stent-graft system with villous structure
  • Anti-endoleak stent-graft system with villous structure
  • Anti-endoleak stent-graft system with villous structure

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Embodiment 1

[0040] figure 1 It is a schematic diagram of the overall structure of the endoleak-proof stent graft system with villi structure of the present invention, figure 2 It is a schematic diagram of the internal structure of the endoleak-proof stent graft system with villi structure of the present invention. Such as figure 1 with figure 2 As shown, the endoleak-proof stent graft system 10 with a villus structure has a metal mesh support layer 11, a membrane layer 12, and a villus layer 13. The metal mesh support layer 11 is located at the innermost layer, the covering film layer 12 covers the outer layer, and the fluff layer 13 is located on the outer layer of the covering film 12.

[0041] The commonly used material for the film layer 12 is polyester, also known as ethylene terephthalate. The fluff layer is formed by multiple fluff covering the surface of the film layer. The material used for the fluff is polyglycolide, the chemical name abbreviation PGLA. Polyglycolide material ha...

Embodiment 2

[0056] In the third embodiment, for the same structure as the above embodiment, this modification is given the same number, and the same description is omitted.

[0057] Image 6 It is a schematic diagram of the curly villi of the endoleak-proof stent graft system with villi structure of the present invention, such as Image 6 As shown, the villi in the villi layer 31 of the endoleak-proof stent graft system 30 with villi structure are curled, and the network formed by interlacing the curled villi when filling the gap is more than the network formed by interlacing linear villi. Density has a stronger blocking effect on blood flow, and is more conducive to blood coagulation.

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Abstract

The invention relates to an anti-endoleak stent-graft system with a villi structure, which is used to prevent endoleaks other than Type II, and is characterized in that it comprises: a metal mesh support layer matching the shape of arterial vessels; The film layer on the mesh support layer; and the fluff layer distributed outside the film layer, the fluff layer fills in the gap formed between the inner wall and the film layer under the action of its own elasticity. The anti-endoleak stent-graft system with the villi structure of the present invention can prevent the occurrence of endoleaks other than type II.

Description

Technical field [0001] The invention relates to an endoleak-proof stent graft system with a villus structure, belonging to the field of medical equipment. Background technique [0002] Aneurysm is one of the most common vascular diseases that cause disability and death. It can be found in any artery throughout the body, and is more common in the elderly. Aneurysms can have many sizes, shapes and distributions. The Ad Hoc Committee on Reporting Standards of the Society for Vascular Surgery defines an aneurysm as a permanent artery whose diameter exceeds 50% of the normal diameter. Expansion of sexual limitations to facilitate clinical decision-making and classification and standardization. [0003] The earliest record of attempting to treat aneurysms dates from the 3rd century AD. Until 1888, Matas and others completed the first true aneurysm repair, that is, ligating branch arteries in the lumen of the brachial aneurysm. In 1951, Dubost and others completed the first suture repai...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07
Inventor 包俊敏董健袁良喜孟艳春周建景在平
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY