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Method for preparing medical titanium alloy material through laser sintering

A laser sintering, titanium alloy technology, applied in electrolytic coatings, additive processing, surface reaction electrolytic coatings, etc., can solve problems such as adverse effects on implant stability, affecting bone growth rate, biomechanical mismatch, etc. The effect of easy bonding, lower elastic modulus, and low density

Active Publication Date: 2020-11-13
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, long-term clinical studies have found that when titanium and titanium alloy materials are implanted for a long time, biomechanical mismatch and failure may occur due to "stress shielding", and there are still differences between the mechanical properties of titanium alloy materials and those of human bones. This fit problem can affect the growth rate of the bone and adversely affect the stability of the implant
In addition, after the implant is implanted in the human body, it is easy to become a carrier for bacterial adhesion, which can lead to infection. Therefore, the improvement of the mechanical properties of titanium alloy bone implants and the preparation of antibacterial coatings are key issues to be solved at this stage

Method used

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  • Method for preparing medical titanium alloy material through laser sintering
  • Method for preparing medical titanium alloy material through laser sintering

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a medical titanium alloy material by laser sintering, the method comprising the steps of:

[0029] S1. Titanium alloy powder surface treatment: select atomized titanium alloy powder with an average particle size of 20 μm, use inert gas to drive the atomized titanium alloy powder, and hit the spiral mold with an air velocity of 400m / s. The spiral mold adopts a spiral pipe Mold, the inner diameter of the mold is 1cm, and the inner surface of the spiral mold is evenly distributed with carbide protrusions with a triangular cross-section. The width and height of the carbide protrusions are both 70 nanometers, and the mold is ultrasonically vibrated during the impact process , the frequency of ultrasonic vibration is 20kHz, and the amplitude is 2μm. After being processed by a spiral mold, the surface of the atomized titanium alloy powder is cut out of nano-scale pits, and the treated titanium alloy powder is collected for use;

[0030] S2. Preparation o...

Embodiment 2

[0036] A method for preparing a medical titanium alloy material by laser sintering, the method comprising the steps of:

[0037] S1. Titanium alloy powder surface treatment: select atomized titanium alloy powder with an average particle size of 40 μm, use inert gas to drive the atomized titanium alloy powder, and hit the spiral mold with an air velocity of 450m / s. The spiral mold adopts a spiral pipe Mold, the inner diameter of the mold is 1.5cm, and the inner surface of the spiral mold is evenly distributed with carbide protrusions with a triangular cross-section. The width and height of the carbide protrusions are both 75nm, and the mold is ultrasonically vibrated during the impact process. , the ultrasonic vibration frequency is 20kHz, and the amplitude is 3μm. After being processed by a spiral mold, the surface of the atomized titanium alloy powder is cut out of nano-scale grooves, and the processed titanium alloy powder is collected for use;

[0038] S2. Preparation of na...

Embodiment 3

[0044] A method for preparing a medical titanium alloy material by laser sintering, the method comprising the steps of:

[0045] S1. Titanium alloy powder surface treatment: select atomized titanium alloy powder with an average particle size of 60 μm, use inert gas to drive the atomized titanium alloy powder, and hit the spiral mold with an air velocity of 500m / s. The spiral mold adopts a spiral pipe Mold, the inner diameter of the mold is 2cm, and the inner surface of the spiral mold is evenly distributed with carbide protrusions with a triangular cross-section. The width and height of the carbide protrusions are both 80nm. Ultrasonic vibration is performed on the mold during the impact process. The frequency of ultrasonic vibration is 20kHz, and the amplitude is 4μm. After being processed by a spiral mold, the surface of the atomized titanium alloy powder is cut out of nano-scale pits, and the treated titanium alloy powder is collected for later use;

[0046] S2. Preparation...

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Abstract

The invention discloses a method for preparing a medical titanium alloy material through laser sintering. The method comprises the following steps: S1, surface treatment of titanium alloy powder; S2,preparing of nano silver suspension; S3, attachment of nano silver; S4, generating of three-dimensional data; S5, laser sintering additive manufacturing; and S6, surface treatment. According to the method, uniform distribution of nano silver in the medical titanium alloy material prepared through laser sintering can be realized, by changing the use amount of the titanium alloy powder with nano silver attaching to the surface and the thickness of the outline part, preparation of antibacterial layers with different thicknesses and different nano silver contents can be realized, and then the antibacterial effect of the medical titanium alloy material can be remarkably improved.

Description

technical field [0001] The invention relates to a method for preparing a medical bone tissue implant, in particular to a method for preparing a medical titanium alloy material by laser sintering. Background technique [0002] Titanium and titanium alloy materials are widely used as human hard tissue implant or repair materials due to their good biomechanical properties and biocompatibility. However, long-term clinical studies have found that when titanium and titanium alloy materials are implanted for a long time, biomechanical mismatch and failure may occur due to "stress shielding", and there are still differences between the mechanical properties of titanium alloy materials and those of human bones. This fit problem can affect the growth rate of the bone and adversely affect the stability of the implant. In addition, after the implant is implanted in the human body, it is easy to become a carrier for bacterial adhesion, which can lead to infection. Therefore, the improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/11C25D11/26B33Y10/00
CPCB22F3/11B33Y10/00C25D11/026C25D11/26
Inventor 刘岩刘易军赵天昊赫子懿林红
Owner JILIN UNIV
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