Sectional bare stent

Abstract

The invention provides a sectional type bare stent, which comprises a tubular stent formed by a plurality of wavy supporting pieces connected in the axial direction, and each wavy supporting piece isof an annular structure arranged in a wavy mode. The tubular stent comprises a near-end supporting mechanism, a middle-area supporting mechanism and a far-end supporting mechanism which are connectedin sequence. The near-end supporting mechanism comprises a near-end end face, and the near-end end face is perpendicular to the axis of the near-end supporting mechanism. According to the sectional bare stent provided by the invention, the tubular stent is formed by adopting the wavy supporting piece with the annular structure; which has good radial supporting force, and can be aligned at the near-end end face of the near-end supporting mechanism, so that the near-end supporting mechanism has high supporting force in the circumferential direction when applied to a bifurcated blood vessel, andthe near-end supporting mechanism can be prevented from being pressed by an artery stent nearby the near-end supporting mechanism or hard tissue nearby the bifurcated blood vessel to deform.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and in particular relates to a segmented bare stent. Background technique [0002] With the rapid development of modern society, the degree of population aging is increasing, people's work pressure is increasing, and their living habits are not healthy enough, which leads to frequent occurrence of cardiovascular diseases in our country and has become the number one disease that endangers the health of Chinese people. Its prevention and treatment It has become the focus of domestic and foreign medical circles. Among them, efficient and minimally invasive interventional therapy such as implantation of vascular stents is currently the most important and effective diagnosis and treatment technology for cardiovascular diseases. For vascular stenosis or occlusive lesions, vascular stents can be implanted to support and expand the diseased blood vessels, so that the blood flow of the diseased b...

AI Technical Summary

Problems solved by technology

[0003] For example, patients with bifurcation vascular lesions are patients with iliac vein compression syndrome. Since the left common iliac vein is jointly compressed by the right common iliac artery and the fifth lumbar vertebra, this continuous mechanical compression and arterial pulsation cause adhesions in the vein cavity, intima Hyperplasia and fibrosis cause stenosis and occlusion of the lumen, resulting in venous return obstruction in the left lower extremity. Therefore, the stent used here needs to have a strong supporting force. At present, there are few specialized venous stents in the market, and arterial stents are mainly used clinically for iliac vein stenosis. , while the radial support force of the arterial stent is weak enough to meet the requirements

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