Non-covered vascular scaffold and method of releasing same

Abstract

A non-covered vascular scaffold comprises Z-shaped supports and grid supports which are integrally connected directly or connected alternately via one or any of medical macromolecular suture lines, metal rings and macromolecular vascular cloth. The non-covered vascular scaffold is of straight tube, expanded junction or converging structure and has good flexibility and good radial supporting force such that vascular true lumens are reshaped, false lumens are downsized and formation of thrombi in false lumens is promoted. The non-covered vascular scaffold employs a structure of the front end released later and can provide precision positioning; a control wire is passed through the trough of the tail end of the last grid support at the distal end of the vascular scaffold, the control wire is loosened to release the vascular scaffold, and the control wire is retracted to reclaim the vascular scaffold.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a minimally invasive interventional vascular stent without a coating material. The non-coated vascular stent can be fully recovered before being completely released, and released again after adjusting the release position. Background technique [0002] With the rapid development of endovascular surgery in recent years, endovascular repair of aortic dissection has become the main treatment for type B aortic dissection. [0003] At present, the common covered stents on the market are generally designed with a covered length of 120-200mm. This kind of stent can not only effectively seal the first breach of type B aortic dissection, but also prevent the thoracic 8-12 vertebral plane rib The occlusion of the inter-artery reduces the risk of paraplegia. However, if the false lumen involves the abdominal aorta and iliac artery, if the true lumen is significantly compressed, o...

AI Technical Summary

Problems solved by technology

At present, venous stent implantation is an effective method for the treatment of iliac vein compression syndrome, but the venous stent on the market is a full mesh stent, which has inaccurate positioning, axial elongation, and radial support during implantation. Force reduction, causing restenosis and occlusion of the iliofemoral vein, and many other problems. At the same time, after the stent is released, it cannot be recovered to adjust the release position, which requires high clinical experience for doctors.

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