A method for making an individualized intestinal fistula stent and its applicable mold

A manufacturing method and a technique for intestinal fistula, which are applied in the field of individualized intestinal fistula stent manufacturing and applicable mold fields, can solve the problems of limited specifications and models, affecting the use effect, and the stent cannot be matched at the intestinal fistula, achieving simple operation, Reasonable design and good elasticity

Active Publication Date: 2021-07-27
NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current brackets are standardized production, with limited specifications and models
However, the individual conditions of patients vary greatly, resulting in the stent often not being well matched with the patient's intestinal fistula, which affects the use effect

Method used

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  • A method for making an individualized intestinal fistula stent and its applicable mold
  • A method for making an individualized intestinal fistula stent and its applicable mold

Examples

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] A method for manufacturing an individualized intestinal fistula stent, comprising the following steps:

[0024] 1) Perform diatrizoate meglumine angiography on patients with intestinal fistula, and use high-resolution CT to perform three-dimensional reconstruction of the angiographic image, understand the anatomical structure around the fistula, and obtain the size of the distal and proximal intestines;

[0025] 2) Use graphic design software such as 3D max software or solidwork software to design molds and convert them into .STL files; the .STL files can be recognized by 3D printers and metal powder printers;

[0026] 3) Use 3D printing or metal powder printing to make molds; among them, polylactic acid, polyurethane or polycaprolactone can be used for 3D printing; or, iron powder, titanium powder or aluminum powder can be used for metal powder ...

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Abstract

The present invention relates to a manufacturing method of an individualized intestinal fistula stent and a suitable mold thereof. The manufacturing method comprises: 1) shadow meglumine angiography to obtain the size of the distal and proximal intestine; 2) using graphic design software to design the mold; 3) using 3D Printing or metal powder printing to make the mold; 4) Using silicone injection molding to make the bracket. The mold applicable to the method includes a shell and an inner core; both the shell and the inner core are inverted L-shaped; the inner core is placed in the outer shell so that an injection molding cavity is formed between the two. The invention has reasonable design and simple operation, and can make the prepared bracket highly consistent with the patient's intestinal fistula anatomical structure, and can use silica gel to make the bracket, so that the bracket has better elasticity and fully meets the needs of intestinal fistula treatment.

Description

technical field [0001] The invention relates to a manufacturing method of a medical device, in particular to a manufacturing method of an intestinal fistula bracket, and a mold suitable for the method, in particular to a manufacturing method of an individualized intestinal fistula bracket and a suitable mold thereof. Background technique [0002] At present, in the treatment of intestinal fistula, stents are mainly used to temporarily repair the damaged intestinal tube to prevent the leakage of intestinal fluid. Most of the current brackets are produced in a standardized manner, with limited specifications and models. However, the individual conditions of patients vary widely, resulting in that the stent often cannot be well matched with the patient's intestinal fistula, which affects the use effect. Therefore, there is an urgent need for improvement in order to meet the needs of individualized intestinal fistula treatment. Contents of the invention [0003] The purpose ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C45/26B29C45/34B29C45/03B29C33/38B33Y80/00A61F5/445B22F3/00B22F10/00B22F10/38
CPCB29C39/02B29C39/38B29C64/10A61F5/445B22F3/00B33Y10/00
Inventor 任建安黄金健蒋运罡李宗安吴秀文
Owner NANJING GENERAL HOSPITAL NANJING MILLITARY COMMAND P L A
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