3D printing and injection molding based silicone individualized airway stent preparation technology

A 3D printing and airway technology, applied in stents, prostheses, medical science, etc., can solve problems such as the inability to print biomaterial airway stents, and achieve the effect of reducing risks

Inactive Publication Date: 2016-06-01
CHANGZHOU UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

[0004] (1) In order to overcome the inadequacies and defects that the existing 3D printing technology cannot print some biomaterial (such as silicone) airway stents, the primary purpose of the present invention is to prepare an injection mold for individualized stents

Method used

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  • 3D printing and injection molding based silicone individualized airway stent preparation technology
  • 3D printing and injection molding based silicone individualized airway stent preparation technology

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the embodiments, but the embodiments of the present invention are not limited thereto

[0017] Step 1: Obtain CT scan data of the patient's chest cavity, and reconstruct a three-dimensional numerical model of the patient's airway;

[0018] Step 2: smooth and trim the narrow part of the airway model, and expand the narrow part to restore it to approximately 110% of the normal airway model, and finally extract the outermost layer of the airway model to establish the model of the airway stent;

[0019] Step 3: Design a corresponding mold according to the established individualized airway stent model. Leave the airway bracket part in the mold for injection molding;

[0020] Step 4: Import the mold model designed in the previous step into the 3D printer for 3D printing.

[0021] Step 5: Pour silicone into the 3D printed individualized injection mold to make an individualized bracket that co...

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Abstract

The invention discloses a technology integrating 3D printing and silicone injection molding of an individualized airway stent mold.The technology achieves preparation of individualized medical airway stents.According to the technology, a real airway model of a patient is extracted and reestablished based on a CT image of the patient, then the individualized airway stent mold is obtained based on the model through computer aided design and the 3D printing, and finally the individualized airway stent conforming to the airway structure of the patient is prepared through silicone casting so as to reduce the risk of airway restenosis.

Description

technical field [0001] The invention belongs to the field of human airway implant interventional medical devices, in particular to a technology for preparing medical silicone airway stents based on 3D printing individualized airway stent injection molds Background technique [0002] In recent years, various benign and malignant diseases and airway diseases caused by trauma, tracheotomy or tracheal intubation are increasing, such as airway stenosis, tracheal wall collapse, airway-esophagus or remnant gastric fistula, airway-thoracic fistula etc., airway narrowing and tracheal wall collapse are usually clinically treated with stent implantation, which can rapidly expand the airway and relieve dyspnea. Airway-esophageal or gastric remnant fistula, airway-thoracic fistula, etc. can also be blocked by stent graft implantation. Since Trendelenburg and Bond placed T-shaped tubes for the treatment of airway stenosis in the 1890s, people have been working on the research of airway s...

Claims

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Application Information

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IPC IPC(8): A61F2/82
CPCA61F2/82A61F2240/001A61F2240/005
Inventor 张治国朱明李振潇孙亿民江晨张翼飞
Owner CHANGZHOU UNIV
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