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Edge closing process for integrated woven covered stent

A stent-graft, integrated technology, applied in the field of medical devices, to achieve the effect of improving support performance, solving loose edges, and simplifying the process

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
  • Edge closing process for integrated woven covered stent

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Experimental program
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Embodiment Construction

[0036] 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:

[0037] Such as Figure 1-4 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:

[0038] Step 1: In the initial stage of weaving, a frustum-shaped weaving mold is used instead of a cylindrical mold. In the initial stage of weaving, only polymer yarn is used to weave to obtain a coating;

[0039] Step 2: When the film is woven to the cylindrical part, the wire participates in the weaving;

[0040] Step 3: When the stent graft is woven to the effective length, the metal wire in it will not continue to participate in weaving, and the polymer yarn in it will continue to weave forward to obtain the stent graft;

[0041] Step 4: Whe...

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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 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 mixedmode. By means of the edge closing process of the two-step end 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; and the application is beneficial to promoting the industrialization of the binary mixed-weaving integrated tectorial membrane 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 standardize 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, this process o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/86A61M31/00
CPCA61F2/86A61M31/002
Inventor 关国平李志荣王璐郭爱军王富军林婧刘晓凤李彦
Owner DONGHUA UNIV
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