Reticulated endovascular stent

Abstract

The invention discloses a reticulated endovascular stent which comprises a plurality of supporting unit rings and connecting bars, wherein the supporting unit rings consist of a plurality of wave-shaped bars with wave-shaped structures; the connecting bars are connected to the adjacent supporting unit rings to form the cylindrical reticulated endovascular stent, the axial length of each supporting unit ring is less than 1.36mm, and the optimal range is between 0.65mm and 1.03mm; the distance between every two adjacent supporting unit rings is less than 0.5mm, and the optimal range is between 0.1mm and 0.44mm; the connecting bars positioned among different supporting unit rings are axially crossly arranged; the connecting bars connected with the supporting unit rings at two axial ends of the stent are set to be n-shaped connecting bars, and other connecting bars are blocky entity bars and/or short curved bars; and wave crests and/or troughs of the curved bars are provided with strengthening rings strengthening the supporting force. The stent has smaller mesh, can effectively lower the postoperative restenosis rate, and improves the medical treatment effect. The reticulated endovascular stent is suitable to the interventional technique, and is especially suitable to the percutaneous coronary intervention.

Description

technical field [0001] The invention relates to a stent in a vascular cavity, in particular to a mesh stent in a luminal cavity. Background technique [0002] Interventional therapy is a minimally invasive treatment using modern high-tech means, that is, under the guidance of medical imaging equipment, special precision instruments are introduced into the human body to diagnose and locally treat lesions in the body. Because interventional therapy has the characteristics of no surgery, less trauma, quick recovery and good effect, interventional technology has been popularized and developed in recent years. Among them, percutaneous coronary intervention (PCI) has been more and more widely used in the treatment of heart disease caused by coronary atherosclerosis. This method is mainly completed by implanting an expandable stent at the diseased blood vessel. The stent is a cylindrical mesh stent composed of connecting rods connecting multiple supporting unit rings. The supporti...

AI Technical Summary

Problems solved by technology

In clinical use, after the stent with a larger mesh is deployed, the plaque in the lesion area will easily pass through the mesh and grow in the tube formed by the stent, resulting in narrow space inside the stent and affecting blood circulation in the lumen , restenosis occurs

[0005] Therefore, the stent mesh provided by the prior art is relatively large and becomes an unfavorable factor affecting the medical effect

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