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A kind of intracranial vascular stent with excellent flexibility

A technology of intracranial blood vessels and flexibility, applied in the field of medical devices, can solve the problems of high residual stenosis and complicated operation of self-expandable stents, and achieve the effect of solving insufficient flexibility, improving compliance performance, and excellent flexibility

Active Publication Date: 2020-03-27
HUAIYIN INSTITUTE OF TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

The self-expandable stent is soft and has good passability, but it needs to use a balloon to pre-expand the lesion before the stent is implanted. The coaxial exchange of the balloon and the stent makes the operation more complicated. At the same time, the self-expandable stent has the disadvantage of higher residual stenosis

Method used

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  • A kind of intracranial vascular stent with excellent flexibility
  • A kind of intracranial vascular stent with excellent flexibility
  • A kind of intracranial vascular stent with excellent flexibility

Examples

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Embodiment Construction

[0024] In order to further illustrate the present invention, the present invention is described in detail below in conjunction with the examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0025] Such as Figure 1-6 As shown, the reference signs are as follows: support ring unit 1 , connecting rib 2 , through hole 11 , fillet 12 of support ring unit, connection end 21 , connection body 22 and lock 23 . Wherein, the axial length of the support ring unit 1 is A, and its range is 0.5-2 mm; the length of the connecting rib 2 is B, and its range is 0.5-1 mm; the rib width of the connecting rib 2 is C, and its range is 60-200 μm , the rib width of the support ring is D, and its range is 60-160 μm.

[0026] According to the different specifications of specific clinical applications, the lateral length of the intracranial vascular stent is 8 mm to 40 mm, and its out...

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Abstract

The inVention discloses an intracranial Vascular stent excellent in flexibility, and belongs to the technical field of medical deVices. The intracranial Vascular stent comprises a plurality of Vertical supporting ring units, and eVery two adjacent supporting ring units are connected through a connection rib; each supporting ring unit comprises a plurality of supporting rings, each supporting ringis in an omega shape, and the omega-shaped supporting rings are sequentially connected end to end. According to the intracranial Vascular stent excellent in flexibility, a hinging connection way is adopted, the supporting rings and the connection ribs can flexibly and freely rotate, while the adVantages of an expandable Vascular stent are reserVed, the flexibility of the stent is greatly improVed,and the problem is solVed that the existing expandable intracranial Vascular stent product is poor in flexibility.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to an intracranial vascular stent with excellent flexibility. Background technique [0002] Intracranial blood vessels are often located in the subarachnoid space and surrounded by cerebrospinal fluid. The blood vessels are brittle and prone to rupture when the stent is delivered and placed. At the same time, there are multiple physiological bends in the intracranial blood vessels. Placing a stent in the curved section will have a straightening effect on the blood vessel. , Stent malapposition is more likely to occur, and it is easy to induce thromboembolic events and in-stent restenosis. The physiological characteristics of intracranial blood vessels require extremely high flexibility of the stent. [0003] Some scholars have used coronary drug-eluting stents to treat intracranial artery stenosis, but the intracranial vertebrobasilar arteries are tortuous, thin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/915
CPCA61F2/915A61F2002/91533A61F2002/9155A61F2210/0014
Inventor 刘磊丁红燕姜海林蒋欣刘爱辉张成
Owner HUAIYIN INSTITUTE OF TECHNOLOGY
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