Pipe material for preparing stent and its preparation method, stent and its preparation method

A tube material and axial direction technology, applied in the direction of stents, prostheses, braids, etc., can solve the problems of low mechanical properties of biodegradable stents, reduce the risk of thrombosis, high mechanical properties, and reduce the risk of fatigue fracture Effect

Active Publication Date: 2021-02-12
上海发微医用材料有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

[0013] The object of the present invention is to provide a kind of pipe material for preparing stent and its preparation method, stent and its preparation method, to solve the problem of low mechanical properties of biodegradable stent in the prior art

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  • Pipe material for preparing stent and its preparation method, stent and its preparation method

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Embodiment Construction

[0062] In order to make the purpose, advantages and characteristics of the present invention clearer, the following in conjunction with the attached Figure 1-8 The pipe material for preparing the stent and the preparation method thereof, the stent and the preparation method thereof proposed in the present invention are further described in detail. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0063] As used in this specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the content clearly dictates otherwise. As used in this specification and the appended claims, the term "or" is generally employed in its sense including "and / or" unless the content clearly dictates otherwise.

[0064] figure 1 It is a perspective view of a pipe material according to...

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Abstract

The invention provides a pipe for preparing a stent and a preparation method thereof, a stent and a preparation method thereof. The outer layer of the pipe, the middle layer of the pipe and the inner layer of the pipe are sequentially arranged from outside to inside along the radial direction of the pipe, the outer layer of the pipe and the inner layer of the pipe are both composed of biodegradable polymers, and the middle layer of the pipe is composed of Woven from biodegradable fibers. The stent prepared from the tube of the present invention contains a biodegradable fiber braided structure, which can provide effective radial support force in large-diameter cavities, and the biodegradable fiber braided structure is wrapped in a degradable polymer, which can ensure The stent has good bending deformation properties, which enables the stent to be applied to various blood vessels, and reduces the risk of fatigue fracture caused by the expansion and contraction process of the stent after the stent is implanted in the blood vessel. Compared with the existing biodegradable polymer stent, the stent of the present invention has a thin wall, which facilitates the promotion of endothelialization and reduces the risk of thrombosis caused by stent implantation.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a biodegradable pipe material for preparing a stent and a biodegradable stent. Background technique [0002] Coronary heart disease is a common heart disease and the main cause of death in heart disease patients. Coronary heart disease is a disease caused by the deposition of cholesterol or other lipids on the inner wall of coronary arteries, forming "plaques", which cause narrowing or blockage of blood vessels. Over time, this build-up of "plaque" causes blood flow to the heart to slow, triggering chest pain in the patient. If a blood vessel becomes completely blocked, preventing oxygen from getting to the heart, the patient will suffer from a heart attack, myocardial infarction, or damage to heart tissue due to the lack of oxygen to the heart. [0003] The advent of coronary artery stents undoubtedly provides an effective treatment for coronary heart disease. It is cu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L31/12A61L31/14D04C1/06D04C1/02A61F2/90
CPCA61F2/90A61F2210/0004A61F2210/0076A61L31/06A61L31/14A61L31/148D04C1/02D04C1/06D10B2401/12D10B2509/06C08L67/04C08L67/02
Inventor 高晨光候娟姜洪焱
Owner 上海发微医用材料有限公司
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