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Edge closing process for integrated woven covered stent

A covered stent, an integrated technology, is applied in the field of medical devices to achieve the effects of outstanding creativity and novelty, improved support performance and anti-slip performance, and strong process practicability

Active Publication Date: 2020-08-18
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem of how to trim the integrated braided stent graft

Method used

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  • Edge closing process for integrated woven covered stent
  • Edge closing process for integrated woven covered stent

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Embodiment Construction

[0027] In order to make the present invention more obvious and understandable, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings:

[0028] Such as Figure 1-2 As shown, the present invention provides an integrated braided film-covered stent edge trimming process, including the initial edge trimming process and the end end edge trimming process; including the following steps:

[0029] Step 1: Use a frustum-shaped braiding mold instead of a cylindrical mold at the initial stage of weaving, and only use metal fiber weaving at the initial stage of weaving to obtain the initial end bracket;

[0030] Step 2: When the stent is woven into the cylindrical part, the polymer fiber or yarn participates in the weaving;

[0031] Step 3: When the stent graft is woven to an effective length, the polymer fibers or yarns therein no longer participate in weaving, while the metal fibers therein continue to weave forward;

[0032] Step 4: ...

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Abstract

The invention relates to an edge closing process for an integrated woven covered stent, and belongs to the technical field of medical instruments. The edge closing process comprises a starting end edge closing process and an ending end edge closing process. A two-step ending method is adopted to close the edge of the integrated woven covered stent formed by weaving metal and polymer fiber materials in a mixed mode. By means of the edge closing process based on the two-step ending method, smooth edge closing can be conducted on the end of the integrated woven covered stent, and the supporting performance of the covered stent is improved to a certain extent. The process is simple, high in practicability and outstanding in creativity. The application of the process is beneficial to promotingthe industrialization of a binary hybrid integrated covered stent.

Description

technical field [0001] The invention relates to an edge trimming process of an integrated braided film-covered stent, which belongs to the technical field of medical devices. Background technique [0002] The traditional covered stent consists of three parts: the film, the stent, and the suture. The manufacturing process is as follows: the film and the stent are made separately, and then the film and the stent are connected by manual suture. Due to different suturing techniques and individual differences, manual suture often leads to very difficult quality control of the final product. The traditional manual suture production process of stent grafts has the defects of low production efficiency and uneven product quality; the process flow is not easy to achieve standardization and automation. However, the currently developed one-piece braided membrane-grafted stent directly weaves the bracket and the membrane-grafted stent at one time through a weaving method. Obviously, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/86
CPCA61F2/86
Inventor 李志荣王璐郭爱军关国平王富军刘晓凤林婧李彦
Owner DONGHUA UNIV
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