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One-piece braided film-covered stent edge finishing process

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

Active Publication Date: 2021-08-03
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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  • One-piece braided film-covered stent edge finishing process
  • One-piece braided film-covered stent edge finishing process
  • One-piece braided film-covered stent edge finishing process

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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 integrated braided film-covered stent edge trimming process, which belongs to the technical field of medical devices; it includes a starting edge trimming process and an end end edge trimming process; a "two-step finishing method" is used to mix metal and polymer fiber materials The one-piece braided stent graft has been trimmed. Through the "two-step finishing method" edge trimming process, the end of the integrated braided stent graft can be trimmed smoothly, and the supporting performance of the stent graft can be improved to a certain extent. The technology is simple, practical, and creative; its application will be conducive to promoting the industrialization of binary mixed-weaving integrated stent grafts.

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 Patents(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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