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Intravascular stent structure

A technology of internal stents and tubular structures, applied in the field of vascular stents, can solve problems such as poor flexibility, turbulent platelet flow, and inconvenient use, and achieve the effect of preventing the formation of thrombus and degrading the risk of thrombus

Pending Publication Date: 2021-03-26
SHANGHAI BIO HEART BIOLOGICAL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, the vascular stent itself is not elastic, and must be attached to the blood vessel by expanding the balloon to a certain diameter, so there are problems of poor flexibility and inconvenient use.
[0004] In addition, most of the current market still has a single stent structure. After being implanted in the blood vessel, the stent rod will protrude from the inner wall of the blood vessel. After the blood flow passes through, it is easy to form turbulent flow and cause platelet accumulation to cause thrombosis in the stent.
However, for covered stents, the film still needs to be fixed on the stent by sewing, bonding, hot-melting, etc. This method of fixing the film, applied to the degradable stent, will cause damage to the degradable stent body. damage

Method used

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Effect test

Embodiment 1

[0043] like figure 1As shown, Embodiment 1 of the present invention provides an intravascular stent structure, including a degradable elastic film 1 and an inner stent 2 sheathed thereon, the inner stent 2 is a hollow tubular structure with a hollow surface, so The inner bracket 2 includes a ring bar 3 and a straight connecting rod 4 perpendicular to the ring bar 3 , wherein the shape of the ring bar 3 is arc wave.

[0044] The inner stent 2 is engraved and shaped by laser cutting the polylactic acid tube, and the surface of the inner stent 2 can be further coated with anti-proliferative drugs such as rapamycin or paclitaxel on the surface of the stent.

[0045] The shape of the ring strips 3 is arc-shaped and wavy, and there are multiple ring strips 3 arranged at equal intervals. The arc-shaped wavy annular strip 3 includes several convex arcs 5 and concave arcs 6, and the intervals between the convex arcs 5 and the concave arcs 6 are arranged alternately. The depth and radi...

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Abstract

The invention relates to the field of intravascular stents, in particular to an intravascular stent structure. The intravascular stent structure comprises a degradable elastic film and an inner stentarranged on the degradable elastic film in a sleeving mode, wherein the inner stent is of a hollow tubular structure with the internal hollow surface, the inner stent comprises annular strips and a linear connecting rod perpendicular to the annular strips, and the annular strips are in an arc wave shape.

Description

technical field [0001] The invention relates to the field of vascular stents, in particular to an intravascular stent structure. Background technique [0002] Vascular stent refers to the intelligent medical treatment that, on the basis of lumen balloon expansion and forming, an internal stent is placed in the lesion to support the stenosis and occlusion of the vessel, reduce the elastic retraction and reshaping of the vessel, and maintain the smooth blood flow in the lumen. instrument. Among them, some internal stents also have the function of preventing restenosis, mainly divided into coronary stents, cerebrovascular stents, renal artery stents, aortic stents, etc. [0003] Currently, the mainstream way of deploying stents in blood vessels is balloon expansion. In this way, the vascular stent itself has no elasticity, and must be attached to the blood vessel by expanding the balloon to a certain diameter, so there are problems of poor flexibility and inconvenient use. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/07A61F2/90A61F2/91A61L31/06A61L31/08A61L31/14A61L31/16A61L33/00A61L33/10
CPCA61F2/07A61F2/90A61F2/91A61F2002/075A61F2210/00A61F2210/0004A61L31/06A61L31/08A61L31/14A61L31/148A61L31/16A61L33/0011A61L33/08A61L2300/416A61L2300/606C08L67/04
Inventor 汪立蔡涛王君毅张晨朝
Owner SHANGHAI BIO HEART BIOLOGICAL TECHNOLOGY CO LTD
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