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Manufacture method of titanium or titanium alloy laryngotracheal interventional stent

A technology of titanium alloy and laryngotracheal tube, which is applied in the field of preparation of titanium or titanium alloy laryngotracheal stent, can solve the problems of poor flexibility of tracheal stent, difficult to obtain microporous structure, easy powder falling off, etc., and achieves easy control of processing size and shape. , good cleaning effect, fast processing effect

Active Publication Date: 2013-03-27
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all the above-mentioned methods have serious problems. The tracheal stent prepared by the powder metallurgy method is very poor in flexibility, easy to break after implantation, and the powder is easy to fall off and cause tracheal obstruction, etc.
The tracheal stent obtained by the weaving method has good flexibility, but it is difficult to obtain a microporous structure of a specified size and shape, and cannot maximize the attachment and proliferation of tissues, and the combination of the two is poor

Method used

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  • Manufacture method of titanium or titanium alloy laryngotracheal interventional stent

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preparation example Construction

[0037] Such as figure 1 The shown method for preparing a titanium or titanium alloy laryngotracheal interventional stent includes the following steps:

[0038] Step 1. Determine the structure and size of the plane expansion plate: the plane expansion plate of the laryngotracheal interventional stent to be processed is a whole plate, and the structure and size of the plane expansion plate are determined according to the structure and size of the laryngotracheal interventional stent to be processed .

[0039] Step 2. Laser engraving and forming: first import the pre-designed and drawn micro-hole structure pattern to be engraved into the laser engraving machine; then, under the protection of inert gas, use the laser engraving machine to perform laser engraving on the plate to be processed, and obtain the laser Carved and shaped plane plate; the plate to be processed is a pure titanium plate or a titanium alloy plate.

[0040] The laser output power of the laser engraving machine is 30...

Embodiment 1

[0051] In this embodiment, the preparation of the titanium or titanium alloy laryngotracheal interventional stent includes the following steps:

[0052] Step 1. Determine the structure and size of the plane expansion plate: the plane expansion plate of the laryngotracheal interventional stent to be processed is a whole plate, and the structure and size of the plane expansion plate are determined according to the structure and size of the laryngotracheal interventional stent to be processed .

[0053] In this embodiment, the shape of the flat-expanded plate is square, the length of the flat-expanded plate is 20mm, the width is 30mm and its thickness is 0.2mm, and the unevenness of the flat-expanded plate is 3mm / m.

[0054] Step 2. Laser engraving and forming: first import the pre-designed and drawn micro-hole structure pattern to be engraved into the laser engraving machine; then, under the protection of inert gas, use the laser engraving machine to perform laser engraving on the plat...

Embodiment 2

[0071] In this embodiment, the difference from embodiment 1 is: in step one, the length of the flat unfolded board is 100mm, the width is 80mm and its thickness is 0.5mm, and the unevenness of the flat unfolded board is 3mm / m; The sheet to be processed in step 2 is a Ti-6Al-4V titanium alloy sheet. In actual preparation, other types of titanium alloy sheets can also be used; the laser output power of the laser engraving machine is 45W, and the laser output frequency is 9000Hz. The pulse width of the output laser is 0.5ms; and when performing laser engraving, the distance between the laser emission port of the laser engraving machine and the etched surface of the flat unfolded sheet is 1.2mm, and the cutting speed is 150mm / min; The weakly acidic cleaning agent in step 4 is made of nitric acid, hydrofluoric acid, hydrogen peroxide and deionized water, uniformly mixed in a volume ratio of 5:1:1:3, and the laser engraved flat sheet , Put it in a weakly acidic cleaning agent for 10 ...

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Abstract

The invention discloses a manufacture method of a titanium or titanium alloy laryngotracheal interventional stent, comprising the following steps of: 1, determining the structure and the size of a plane spread plate; 2, forming by means of laser engraving: under the protection of inert gas, carrying out laser engraving on the plate to be treated by a laser engraving machine; 3, machining the plane spread plate; 4, deslagging; 5, carrying out heat setting, wherein the treatment process comprises the following steps of: 501, putting into a mould: putting the deslaged-plane plate into a forming cavity of the pre-machined thermal treatment mould; and 502: thermally treating; 6, blasting sand: blasting sand to the thermally-treated laryngotracheal interventional stent by a sand-blasting machine; and 7, ultrasonically cleaning. The manufacture method disclosed by the invention is simple in process step, reasonable to design, convenient to realize, and good in use effect, the oxidization of the stent in the process of machining can be effectively avoided, and the prepared interventional stent is high in dimensional accuracy and good in mechanical property.

Description

Technical field [0001] The invention belongs to the field of processing titanium or titanium alloy stents for surgical implantation and intervention, and particularly relates to a method for preparing a titanium or titanium alloy laryngotracheal interventional stent. Background technique [0002] Implanted and interventional stents were initially used in the minimally invasive treatment of cardiac and cerebrovascular stenosis. In recent years, with the development of technology, stents have gradually been applied to more implantable fields, such as bile ducts, esophagus, trachea, reproduction, urinary, etc. [0003] Titanium alloy has the characteristics of low density, elastic modulus, high specific strength, high specific rigidity, and good biocompatibility. In recent years, it has been used in various medical implant devices (such as skull repair mesh, intramedullary nail, bone plate, dental implant , Vascular stents, etc.) have been widely studied and applied. It is based on t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04
Inventor 刘春潮于振涛袁思波余森韩建业牛金龙张亚峰皇甫强
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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