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Intravascular multilayer bare stent system

A technology of bare stents and blood vessels, which is applied in the field of medical equipment, can solve the problems of difficult adjustment of mesh pore size, influence on the quality of aneurysm isolation, and blood leakage, so as to ensure the smooth flow of molecules, isolate aneurysms, and prevent blood leakage.

Pending Publication Date: 2020-07-31
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the covered stents and bare stents in the prior art are implanted into the blood vessels of patients, the size of the mesh pores is not easy to adjust, and blood leakage is likely to occur, which easily affects the quality of aneurysm isolation.

Method used

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  • Intravascular multilayer bare stent system
  • Intravascular multilayer bare stent system
  • Intravascular multilayer bare stent system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Embodiment: a kind of intravascular multi-layer bare stent system, such as figure 1 , figure 2 and image 3 As shown, it includes a stent main body. The stent main body includes a first skeleton 1 and a second skeleton 2. The first skeleton 1 and the second skeleton 2 are multi-wire helical structures braided and formed by skeleton wires 3, and the first skeleton 1 and the second skeleton 2 spirals in opposite directions. The inner walls of the first framework 1 and the second framework 2 are superimposed to form a cylindrical network structure, and the first framework 1 and the second framework 2 are fixedly connected. The first frame 1 and the second frame 2 are composed of upper, middle and lower segments connected end to end, and the upper, middle and lower segments of the first frame 1 and the second frame 2 are connected with the first frame 1 Rotating connecting ring 4 that rotates radially with second skeleton 2 . A metal wire 5 parallel to the skeleton lin...

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Abstract

The invention discloses an intravascular multilayer bare stent system, and relates to the technical field of medical equipment. According to the technical points, a support body is composed of a firstframework and a second framework, and the first framework and the second framework are of a cylindrical net structure formed by weaving framework lines made of memory alloy or biodegradable polymer materials, overlapped with each other and opposite in spiral rotation direction. Rotary connecting rings are arranged at the upper sections, the middle sections and the lower sections of the first framework and the second framework; metal wires are connected to the inner wall of the rotary connecting ring; a hole-sealing strip-shaped film is connected to the side wall of the metal wire. The mesh sealing of the multilayer bare stent can be adjusted, so that the aneurysm cavity and the interlayer are isolated from normal blood flow, normal blood flow is prevented from leaking into the aneurysm cavity and the interlayer, blood flow in the aneurysm cavity and the interlayer is restrained, blood clots or thrombi are promoted to be formed in the aneurysm cavity and the interlayer to atrophy the aneurysm, the pressure in the aneurysm cavity is reduced, the potential risk that the aneurysm is increased and ruptured is reduced, and stable and guaranteed treatment purpose is achieved.

Description

technical field [0001] The invention relates to the technical field of medical equipment, more specifically, it relates to a multi-layer bare stent system in blood vessels. Background technique [0002] In recent years, with the increase in the incidence of hypertension atherosclerosis, the incidence of aneurysm (aneurysm) has increased significantly, and there is a trend of younger age. An aneurysm is defined as a local expansion of the arterial diameter more than 1.5 times the normal diameter. According to the pathological changes, it can be divided into three categories: true aneurysm, false aneurysm, and dissecting aneurysm. The main hazards are as follows: ①The aneurysm ruptures, and the wall of the aneurysm gradually expands and becomes thinner due to the continuous impact of the blood flow, and finally the aneurysm ruptures, causing fatal hemorrhage; The blood flow is slow, forming eddy currents. If the inner surface of the tumor wall is rough, it is easy to form a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/88A61F2/90
CPCA61F2/88A61F2/90A61F2250/0097A61F2002/823
Inventor 胡佳赵静
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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