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Method for manufacturing a titanium alloy for biomedical devices

A biomedical, titanium alloy technology, used in the field of nails and joint prostheses, biomedical equipment, capable of solving specific shapes or parts or areas that are not easily accessible, harmful or unfavorable, etc.

Inactive Publication Date: 2014-12-24
法国雷恩国立应用科学学院 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has harmful or adverse consequences in the case of equipment or elements having particular shapes or parts or areas which are not easily accessible (e.g. concave surfaces, etc.)

Method used

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  • Method for manufacturing a titanium alloy for biomedical devices
  • Method for manufacturing a titanium alloy for biomedical devices
  • Method for manufacturing a titanium alloy for biomedical devices

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Experimental program
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Embodiment Construction

[0076] now refer to figure 1 The invention is described. figure 1 A schematic diagram showing the temperature variation as a function of time of an ingot comprising different compounds and intended to form an alloy with reference to successive steps of the method according to the invention.

[0077] In the initial step (not in figure 1 shown in ), the different amounts of metals that are constituents of the alloy to be produced are brought together in the proportions defined below. The mixture of metals is subjected to an initial melting operation at a temperature between 2000°C and 3000°C. Advantageously, this initial melting step is carried out in a cold crucible using semi-magnetic levitation and a high-frequency induction generator. Common or other rapid sintering techniques can also be used.

[0078] During the initial stage, it is important to ensure that a homogeneous mixture is produced without foreign element inclusions, doping or contamination. In this aspect, m...

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PUM

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Abstract

The invention relates to a method for manufacturing a titanium alloy having superelastic properties and / or shape memory for biomedical use, which comprises the steps of: preparing an ingot by melting the various metals that form the desired alloy in a vacuum; optionally homogenising the ingot in a vacuum by high-temperature annealing (higher than 900 DEG C); first quenching; mechanical shaping (rolling, drawing, machining or the like); heat treatment for redissolution in beta phase beyond the beta transus temperature (until a second temperature and then maintaining same for a certain time); and second quenching; characterised in that said heat treatment phase is carried out in a gaseous atmosphere and also constitutes a surface treatment suitable for forming on the surface a layer of nitride, carbonitride, oxide, oxynitride or the like.

Description

technical field [0001] The present invention relates to a method for the manufacture of titanium alloys with superelastic and / or shape memory properties for the manufacture of devices used in the biomedical field, such as endodontic files, arc lamps, wires and orthodontic springs , dental implants, cardiovascular or pulmonary stents, wires and catheters for cardiovascular surgery, and nails and joint prostheses for bone surgery. [0002] The invention also relates to alloys obtained by using this method, and biomedical devices comprising such alloys. Background technique [0003] In the field of biomedicine, considering firstly the purpose of implementation on a part of the human body (e.g. teeth as part of an orthodontic application) from a mechanical point of view and secondly from a biological point of view, such as the devices and elements listed above as examples, Distinct characteristics are required to avoid or minimize reactions or effects associated with the device...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C14/00C22F1/18C23C8/24C23C14/06C23C16/34A61C13/00
CPCA61C2201/007A61L27/06A61L29/02A61L31/022A61L2400/16C21D2201/01C21D2201/02C22C1/02C22C14/00C22F1/183C23C8/24F04C2270/0421C23C8/28C23C8/30
Inventor T·格洛里安D·戈尔丹
Owner 法国雷恩国立应用科学学院
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