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Multi-channel covered vascular stent and preparation method thereof

A vascular stent and multi-channel technology, applied in the field of multi-channel vascular stent grafts, can solve the problems of low surgical success rate and unsuitability for aneurysm treatment, and achieve the effect of improving the surgical success rate

Inactive Publication Date: 2015-03-25
WUXI ZHONGKE GUANGYUAN BIOMATERIALS
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] Expanded polytetrafluoroethylene (expanded PTFE) is a new type of medical polymer material, which is made of polytetrafluoroethylene resin through special processing methods such as stretching. It can be used in the field of suitable membrane materials, and the membrane materials prepared by it can only be used on a flat surface. If it is bent, it needs to be folded in multiple layers, and there are interfaces. It is used as a multi-tube stent covering, which is not suitable for complicated aneurysm treatment. The success rate of the operation very low

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  • Multi-channel covered vascular stent and preparation method thereof

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] The multi-channel membrane-grafted stent 1 of this embodiment includes a frame body, and the surface of the frame body is covered with a polytetrafluoroethylene film. The polytetrafluoroethylene membrane is specifically prepared by electrospinning a polytetrafluoroethylene solution on the surface of the frame, wherein the polytetrafluoroethylene solution includes polytetrafluoroethylene and a solvent, and the solvent is chlorine trifluoride or chlorine pentafluoride or A mixed solvent in which the two are mixed in any proportion. In the polytetrafluoroethylene solution, the concentration of polytetrafluoroethylene is 1 to 30g / ml, such as 5g / ml, 10g / ml, 15g / ml, 20g / ml, 25g / ml ml, the present embodiment is preferably 20 g / ml, and the concentration of polytetrafluoroethylene is also equivalent to the concentration of polytetrafluoroethylen...

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Abstract

The invention relates to a multi-channel covered vascular stent and a preparation method thereof, wherein the multi-channel covered vascular stent comprises a stent body, and a polytetrafluoroethylene film is covered on the surface of the stent body. Compared with the prior art, the polytetrafluoroethylene film is covered on the surface of the stent body of the multi-channel covered vascular stent, the performance of the covered film is similar to that of expanded polytetrafluoroethylene and can be processed into a variety of shapes, such as a cylinder, a circle and a curved surface, so that the multi-channel covered vascular stent is suitable for treating complicated arterial aneurysm, and the success rate of surgery is improved.

Description

technical field [0001] The invention relates to a multi-channel vascular stent graft, and also relates to a preparation method of the multi-channel vascular stent graft. Background technique [0002] The aorta is the largest blood vessel in the human body. The blood reaches the tissues and organs of the whole body through the aorta and its branches, providing oxygen and various nutrients that people need for life, work and study. Aortic aneurysm refers to the abnormal enlargement of the aorta or the rupture of the intimal layer and the separation of the middle layer, and blood enters the artery wall to form a dissection. Although it is not the same as the tumor that people usually talk about, it is not a mass formed by abnormal tissue growth. Metastasis, but the threat to health and its dangers are far greater than tumors, and some people call it an "indeterminate time bomb" in the body. For example, 50% of patients with dissected aortic aneurysm caused by separation of aort...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/10
Inventor 韩志超许杉杉刘茜琳
Owner WUXI ZHONGKE GUANGYUAN BIOMATERIALS
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