Iliac vein stent

Abstract

The invention provides an iliac vein stent and belongs to the technical field of medical instruments. The iliac vein stent is of an annular structure; the iliac vein stent sequentially comprises a first supporting region, a second supporting region and a third supporting region in the axial direction, which are adjacently arranged; the second supporting region is suitable for being supported at the lesion position of the iliac vein; and the supporting force of the first supporting region and the supporting force of the third supporting region are both smaller than the supporting force of the second supporting region. According to the iliac vein stent disclosed by the invention, large compression cannot be caused to iliac vein vascular endothelial tissues, damage of the stent to vascular endothelial cells can be reduced, and finally, the aims of reducing restenosis, deep vein thrombosis and other complications after stent implantation and improving the clinical treatment effect are fulfilled.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an iliac vein stent. Background technique [0002] Iliac vein compression syndrome is a disorder of lower extremity and pelvic venous reflux caused by joint compression of the iliac veins by the iliac artery and the sacroiliac crest. At present, the main method for clinical treatment of iliac vein compression syndrome is stent interventional therapy, which has the advantages of less trauma to the human body, simple operation, and high vascular patency rate after stent implantation. [0003] Clinically, the treatment of iliac vein compression syndrome basically uses arterial peripheral stents that expand the diameter of blood vessels. Due to the characteristics of thick and elastic arterial vessel walls, arterial stents have greater radial support; however, due to venous vessel wall Thin and less elastic, when the stent suitable for arteries is implanted into the iliac ve...

AI Technical Summary

Problems solved by technology

[0003] Clinically, the treatment of iliac vein compression syndrome basically uses arterial peripheral stents that expand the diameter of blood vessels. Due to the characteristics of thick and elastic arterial vessel walls, arterial stents have greater radial support; however, due to venous vessel wall Thin and less elastic, when the stent suitable for arterial vessels is implanted into the iliac vein, the lesion and both sides of the lesion will receive greater support

[0004] The supporting force provided by the stent to the lesion is appropriate, but it will cause greater compression on the vascular endothelial tissue in the non-lesioned position of the iliac vein, which may cause damage to the vascular tissue and induce abnormal proliferation of the vascular endothelial tissue , increasing the probability of restenosis

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