Combined type renal artery stent

Abstract

The invention discloses a combined type renal artery stent. The combined type renal artery stent can select a certain number of segmented stents to form a proper length of renal artery stent accordingto the lesion position and range so as to meet the individualized needs of patients. Meanwhile, because the various segmented stents are connected in a protrusion and groove clamping mode, the peripheries of the various segmented stents have impenetrable X ray markers to achieve rapid assembly and accurate positioning. The drug coating on the surface can reduce the incidence of various complications by slow release and reduce the risk of human body lumen restenosis. In addition, the combined type renal artery stent can be bent naturally according to the structural characteristics of the humanrenal artery so as to be more consistent with human tissue adaptability and make implantation safer and more stable.

Description

technical field [0001] The invention relates to the technical field of medical implantation, in particular to a combined renal artery stent. Background technique [0002] The renal artery is divided into the left renal artery and the right renal artery, branched vertically from the abdominal aorta, and exits 1-2 cm below the superior mesenteric artery, between the first and second lumbar vertebrae, and enters the left and right kidneys through the renal hilum respectively. The renal artery is not only the nutritional blood vessel of the kidney, but also the functional blood vessel of the kidney. In recent years, with the arrival of an aging society, the incidence of renal artery stenosis (RAS) has been increasing. Renal artery stenosis can cause secondary hypertension and ischemic nephropathy, and it is also the cause of renal failure in the elderly. important etiology. Among them, severe stenosis can accelerate the process of renal failure, and the prognosis is poor. How ...

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Problems solved by technology

[0003] However, the development of renal artery stents in China is still very immature. Only a few manufacturers can produce them, and most of them imitate similar foreign products. The clinical use is still dominated by imported foreign products, and peripheral stents (such as iliac artery stents) are often used instead. , stents specifically targeting the renal artery are rare in the market, and due to the characteristics of renal artery disease, they are often located at the opening, so that after the stent is implanted, there must be 1-2mm protruding into the aorta, which obviously affects the hemodynamic shape. Especially after the implantation of bilateral stents is required, the impact is even worse. In addition, the size of the existing stents is fixed, and it is impossible to realize free combination according to the lesion position, change the length of the stent and freely bend

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