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A split-type multi-layer arterial bare stent

A split, bare stent technology, applied in the field of medical devices, to achieve the effect of small thickness, small volume and small diameter

Active Publication Date: 2016-08-24
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a split-type multi-layer bare arterial stent to solve the intracavitary treatment of complex aneurysms involving branch arteries, and realize the multiple delivery of the bare stent to reduce the blood flow rate in the tumor cavity and induce the formation of thrombus in the tumor cavity

Method used

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  • A split-type multi-layer arterial bare stent
  • A split-type multi-layer arterial bare stent
  • A split-type multi-layer arterial bare stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 , figure 2 As shown, a split-type multilayer arterial bare stent includes a first stent ( figure 1 A) and the second bracket ( figure 1 B); the first support includes a first skeleton 1 of a clockwise helical structure, the second support includes a second skeleton 2 of a counterclockwise helical structure, the direction of rotation of the helical structure of the first skeleton 1 and the second skeleton 2 On the contrary; the first bracket and the second bracket are attached to each other and superimposed to form a network structure.

Embodiment 2

[0051] Such as image 3 As shown, a split-type multilayer arterial bare stent includes a first stent and a second stent; the first stent includes a first skeleton 1 of a counterclockwise helical structure, and the second stent includes a clockwise helical structure of the first Two skeletons 2, the rotation direction of the helical structure of the first skeleton 1 and the second skeleton 2 are opposite; the first bracket and the second bracket are attached to each other and superimposed to form a network structure.

[0052] A plurality of holding devices 3 are respectively arranged on the first skeleton 1 and the second skeleton 2, the distances between the holding devices 3 are equal, and the two ends are fixed on the helical structures of the first skeleton 1 and the second skeleton 2 respectively. adjacent threads.

[0053] The upper and lower ends of the first frame 1 and the second frame 2 are respectively provided with a marking point 4 .

[0054] The helical structur...

Embodiment 3

[0057] A split-type multi-layer bare arterial stent, including a first stent and a second stent; the first stent includes three first skeletons 1, and the first skeletons 1 are all helical structures in the same direction of rotation, and are stacked in parallel to form a three-wire helical structure , the second bracket includes three second skeletons 2, the second skeletons 2 are all helical structures in the same rotation direction, and are superimposed parallel to each other to form a three-wire helical structure, and the helical structures of the first skeleton 1 and the second skeleton 2 are The direction of rotation is opposite; the first support and the second support are attached to each other and superimposed to form a network structure.

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Abstract

The present invention provides a split-type multi-layer bare arterial stent to solve the intracavitary treatment of complex aneurysms involving branch arteries, and realize multiple delivery of the bare stent to reduce the blood flow rate in the tumor cavity and induce thrombus formation in the tumor cavity. A split-type multilayer arterial bare stent of the present invention includes a first stent and a second stent; the first stent includes a first skeleton (1) of a helical structure, and the second stent includes a second skeleton (2) of a helical structure ), and the rotation directions of the helical structures of the first skeleton (1) and the second skeleton (2) are opposite; the first bracket and the second bracket are attached to each other and superimposed to form a network structure. The invention overcomes the defects of the traditional covered stent in the aneurysm isolation operation, can reduce the blood flow velocity in the tumor cavity, change the blood flow state in the tumor cavity, thereby inducing thrombus formation in the tumor cavity and reducing the tension of the tumor wall. To achieve the purpose of isolating the aneurysm.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to a bare stent for treating aneurysms. 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. [0003] 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 thrombus, and the thromb...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/07
Inventor 陆清声景在平张勇学
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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