Combined type renal artery stent

A renal artery, combined technology, applied in the field of medical implantation, can solve the rare problems, such as changing the length and free bending of the stent, affecting the hemodynamic shape, etc., to achieve safe implantation, rapid assembly and accurate positioning, The effect of reducing the risk of restenosis

Inactive Publication Date: 2018-02-02
ZHENGZHOU YUNQI IND EQUIP TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 diseas

Method used

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  • Combined type renal artery stent
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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1:

[0018] Such as figure 1 As shown, the combined renal artery stent 1 of the present invention is a segmented hollow tubular structure, which includes several segments of mesh segmented stents 2 combined, each segmented stent 2 is a hollow cylindrical structure with a non-mesh structure At the first end 3 and the second end 6, the outer edge of the first end 3 of each segmented bracket 2 has at least two arc-shaped protrusions 5, and the inner edge of the second end has at least two protrusions that can accommodate the protrusions. From the groove 4 of 5, the first end 3 of each segmented stent is inserted into the second end 6 of the other segmented stent, and the protrusions 5 and grooves 4 are clamped to form a combined renal artery stent 1. Need to use connecting rings, connecting rods or sutures to connect. Its free assemblability enables the renal artery stent to change its length as required. Before stent implantation, a certain number of stent segments ...

Example Embodiment

[0025] Example 2:

[0026] Such as figure 1 As shown, most of the structure of the combined renal artery stent 1 of the present invention is the same as that of Embodiment 1, except that the segmented stent 2 in this embodiment is made of elastic non-metallic materials. Including polytetrafluoroethylene, polyester fiber, polyamide, polypropylene, polycaprolactone, polylactic acid, polyurethane, polybutadiene, rubber, collagen, etc.

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PUM

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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 ...

Claims

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Application Information

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IPC IPC(8): A61F2/07A61M31/00
CPCA61F2/07A61F2002/077A61F2210/00A61F2210/0014A61F2250/0098A61M31/002
Inventor 王志坚
Owner ZHENGZHOU YUNQI IND EQUIP TECH CO LTD
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