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A kind of degradable antibacterial magnesium alloy and preparation method thereof

An antibacterial magnesium and alloy technology, applied in prostheses, tissue regeneration, medical science, etc., can solve the problems of bacterial infection and preparation difficulties of implant materials, achieve the effects of reducing the latent heat of solidification, firm bonding, and improving antibacterial properties

Active Publication Date: 2020-11-24
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The technical task of the present invention is to provide a degradable antibacterial magnesium alloy and its preparation method in view of the problems that the current implant materials are easy to cause bacterial infection and difficult to prepare

Method used

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  • A kind of degradable antibacterial magnesium alloy and preparation method thereof
  • A kind of degradable antibacterial magnesium alloy and preparation method thereof
  • A kind of degradable antibacterial magnesium alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0039] An antibacterial and degradable magnesium alloy, the mass fractions of each component of the material are: Ag: 1.35%, Cu: 0.9%, Zn: 3.6%, Sr: 0.9%, Ca: 0.36%, unavoidable Fe, Among impurities such as Al, the content of a single impurity is less than 0.02%, the total amount of impurities does not exceed 0.1%, and the balance is Mg.

[0040] Based on the magnesium alloy of above-mentioned composition, its preparation method step is as follows:

[0041] Another aspect of the present invention provides a preparation method based on the above-mentioned materials, the method comprising the following steps:

[0042] (1) Ingredients: Calculate and prepare the raw materials required for magnesium alloy bone screws. The mass fraction of silver in high-purity silver wire is ≥99.99%, the mass fraction of silver in high-purity copper wire is ≥99.99%, the mass fraction of zinc in high-purity zinc particles is ≥99.99%, and the mass fraction of zinc in high-purity zinc particles is ≥9...

Embodiment 2

[0047] An antibacterial and degradable magnesium alloy, the mass fractions of each component of the material are: Ag: 1.5%, Cu: 1.0%, Zn: 4%, Sr: 1.0%, Ca: 0.4%, unavoidable Fe, Among impurities such as Al, the content of each single impurity is less than 0.02%, the total amount of impurities is not more than 0.1%, and the balance is Mg.

[0048] Based on the magnesium alloy of above-mentioned composition, its preparation method step is as follows:

[0049] Another aspect of the present invention provides a preparation method based on the above-mentioned materials, the method comprising the following steps:

[0050] (1) Ingredients: Calculate and prepare the raw materials required for magnesium alloy bone screws. The mass fraction of silver in high-purity silver wire is ≥99.99%, the mass fraction of silver in high-purity copper wire is ≥99.99%, the mass fraction of zinc in high-purity zinc particles is ≥99.99%, and the mass fraction of zinc in Mg-Sr master alloy is ≥99.99%. ...

Embodiment 3

[0055] An antibacterial and degradable magnesium alloy, the mass fractions of each component of the material are: Ag: 1.65%, Cu: 1.1%, Zn: 4.4%, Sr: 1.1%, Ca: 0.44%, unavoidable Fe, Among impurities such as Al, the content of each single impurity is less than 0.02%, the total amount of impurities is not more than 0.1%, and the balance is Mg.

[0056] Based on the magnesium alloy of above-mentioned composition, its preparation method step is as follows:

[0057] Another aspect of the present invention provides a preparation method based on the above-mentioned materials, the method comprising the following steps:

[0058] (1) Ingredients: Calculate and prepare the raw materials required for magnesium alloy bone screws. The mass fraction of silver in high-purity silver wire is ≥99.99%, the mass fraction of silver in high-purity copper wire is ≥99.99%, the mass fraction of zinc in high-purity zinc particles is ≥99.99%, and the mass fraction of zinc in high-purity zinc particles i...

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Abstract

The invention provides a degradable antibacterial magnesium alloy and a preparation method thereof, and relates to the field of metal biomedical materials. The main active elements of the degradable antibacterial magnesium alloy material are Ag, Cu, Zn and Sr. Through the optimized design of magnesium alloy components, The corresponding mass fractions of each component are: Ag: 1.35~1.65%, Cu: 0.9~1.1%, Zn: 3.6~4.4%, Sr: 0.9~1.1%, Ca: 0.36~0.44%, the balance is Mg and others unavoidable impurities. After the magnesium alloy material implant is completed, it can be completely degraded to avoid secondary surgical removal, reducing medical costs and patient pain. At the same time, it improves the antibacterial property of the implant, promotes the formation of osteoblasts and inhibits osteoclasts. The function of cellular bone absorption; the degradable antibacterial magnesium alloy adopts a semi-solid rheological die-casting process. The microstructure of the product is evenly distributed, the internal tissue is dense, and there are few defects such as pores and segregation, which can meet the high quality and high performance of implant products. Accuracy requirements.

Description

technical field [0001] The invention relates to the field of metal medical implant materials, in particular to a degradable antibacterial magnesium alloy and a preparation method thereof. Background technique [0002] Magnesium alloys have become a new generation of medical biomaterials due to their excellent properties such as low density, high specific strength, good processability and biocompatibility, and are favored by biomaterial researchers and medical personnel. Compared with traditional medical metal materials and degradable polymer materials, magnesium alloy has the following outstanding advantages as a medical implant material: [0003] (1) Good biocompatibility [0004] Magnesium is an essential mineral for human metabolism and an indispensable element for the nervous system. Many cases are related to its deficiency. Magnesium is second only to calcium and phosphorus in the mineral content of the human body, and its content is second only to potassium in the io...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/04
CPCA61L27/047A61L27/54A61L27/58A61L2300/102A61L2300/404A61L2300/412A61L2430/02B22D17/007C22C1/03C22C23/04
Inventor 铁镝颜路飞任浩博张博彧管仁国刘立忠
Owner NORTHEASTERN UNIV LIAONING
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