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Blood vessel stent

A technology of vascular stent and tubular structure, which is applied in the field of vascular interventional medicine, can solve the problems of reducing elastic retraction of blood vessels, insufficient flexibility, and easy fracture, so as to improve support strength and anti-extrusion performance, improve treatment effect, and increase flexibility Effects of properties and adherence properties

Pending Publication Date: 2020-01-31
SHANGHAI BLUEVASCULAR MEDTECH CO LTD
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Problems solved by technology

[0003] In recent years, interventional therapy has been used as a routine procedure for the treatment of venous compression. At present, the stents used to treat venous stenosis include cutting stents and braided stents. Cutting stents can support narrowed and occluded blood vessels, reduce the elastic recoil of blood vessels, and maintain the The blood flow in the cavity is smooth, but there are also some shortcomings, such as insufficient flexibility, easy to break, etc.

Method used

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] In order to describe the structural features of the present invention more clearly, "near end" and "far end" are used as orientation words, wherein "near end" means the end close to the heart; "far end" means the end far away from the heart. The term "or" is generally used in its sense including "and / or" unless the content clearly dictates otherwise.

[0031] See figure 1 and figure 2 , the vascular stent 1 provided in this embodiment includes a stent body 10, the stent body 10 is woven into a mesh-like structure by metal wires, and has a plurality of grid units 14, and the stent body 10 includes a first stent segment 11 connected in the axial direction And the second stent segment 12, the proximal area of ​​the stent body 10 is woven into the first stent segment 11 by wire, the mesh aperture of the first stent segment 11 is smaller, and the m...

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Abstract

The invention discloses a blood vessel stent. The blood vessel stent includes a stent main body which is of a mesh-tube-shaped structure woven by metal wires, wherein the stent main body includes a first stent segment and a second stent segment which are connected in an axial direction, and the mesh density of the first stent segment is different from that of the second stent segment. By adoptingthe blood vessel stent, regarding phlebostenosis involving inferior vena cava and iliofemoral veins, naked segments are arranged so that therapeutic effects can be improved; regarding compressed parts, a dense mesh structure with larger mesh density is arranged so that support strength and anti-extrusion performance can be improved; regarding bent parts, a sparse mesh structure with smaller mesh density is arranged so that flexibility performance and adherence performance can be improved; and regarding blood vessel anatomic forms, a variable-diameter structure is arranged and can adapt to theblood vessel forms, and therefore the blood vessel stent is suitable for blood vessels of various diameters.

Description

technical field [0001] The invention relates to the field of vascular interventional medicine, in particular to a vascular stent. Background technique [0002] Venous disease is currently a relatively common disease in vascular surgical diseases, especially iliac vein compression syndrome, which refers to a syndrome in which compression of the iliac artery leads to intraluminal adhesion, stenosis or occlusion, resulting in various clinical symptoms. The incidence of iliac vein compression syndrome is 20%-40%. [0003] In recent years, interventional therapy has been used as a routine procedure for the treatment of venous compression. At present, the stents used to treat venous stenosis include cutting stents and braided stents. Cutting stents can support narrowed and occluded blood vessels, reduce the elastic recoil of blood vessels, and maintain the The blood flow in the cavity is smooth, but there are also some shortcomings, such as insufficient flexibility and easy break...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/90
CPCA61F2/90A61F2250/0017A61F2230/0067A61F2250/0039A61L31/022A61F2250/0012A61F2250/001
Inventor 王丽文黄定国朱清张琳琳张兆夺
Owner SHANGHAI BLUEVASCULAR MEDTECH CO LTD
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