Degradable magnesium alloy laminating bone nail and preparation method

A magnesium alloy and bone nail technology, applied in the field of magnesium alloy, can solve the problems of poor plastic deformation ability and insufficient mechanical properties, and achieve strong mechanical properties, good biocompatibility, and reduce the concurrent effects of inflammation

Inactive Publication Date: 2020-08-07
东莞立德生物医疗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current magnesium alloys generally have insufficient mechanical properties and poor plastic deformation ability.

Method used

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  • Degradable magnesium alloy laminating bone nail and preparation method
  • Degradable magnesium alloy laminating bone nail and preparation method

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Effect test

preparation example Construction

[0027] The preparation method of the degradable magnesium alloy covered bone nail of the present invention comprises the following steps in sequence:

[0028] (1) Pretreat the body of the magnesium alloy bone nail to remove surface impurities;

[0029] (2) Magnetron sputtering coating is carried out on the surface of the magnesium alloy bone nail body with a silver-copper target;

[0030] (3) Clean the body of the magnesium alloy bone nail.

[0031] Wherein, the pretreatment in step (1) may be pickling, sandblasting, or polishing, and the specific pretreatment process steps may be conventional operations, as long as the impurities on the surface of the magnesium alloy bone nail body can be removed.

[0032] In step (2), the preparation method of silver-copper target material comprises the following steps:

[0033] a. Melting copper and silver under a protective atmosphere to obtain a liquid alloy;

[0034] b. Spraying and depositing the liquid alloy to obtain a silver-coppe...

Embodiment 1

[0040] A degradable magnesium alloy covered bone nail, comprising a magnesium calcium alloy bone nail body and AgCu deposited on the magnesium calcium alloy bone nail body 3 layer, AgCu 3 The thickness of the layer is 1 μm.

[0041] Its preparation method comprises the following steps successively:

[0042] (1) Pre-polishing the body of the magnesium-calcium alloy bone nail to remove surface impurities;

[0043] (2) Magnetron sputtering coating is carried out on the surface of the magnesium-calcium alloy bone nail body using silver-copper targets;

[0044] (3) Clean the main body of the magnesium-calcium alloy bone nail with pure water.

[0045] Wherein, the preparation method of silver-copper target material comprises the following steps:

[0046] a. Melting copper and silver under a protective atmosphere to obtain a liquid alloy;

[0047] b. Spraying and cooling the liquid alloy in sequence to obtain silver-copper alloy ingots;

[0048] c. performing homogenization ann...

Embodiment 2

[0052] A degradable magnesium alloy covered bone nail, comprising a magnesium calcium alloy bone nail body and AgCu deposited on the magnesium calcium alloy bone nail body 3 layer, AgCu 3 The thickness of the layer is 0.5 μm.

[0053] Its preparation method comprises the following steps successively:

[0054] (1) Pre-polishing the body of the magnesium-calcium alloy bone nail to remove surface impurities;

[0055] (2) Magnetron sputtering coating is carried out on the surface of the magnesium-calcium alloy bone nail body using silver-copper targets;

[0056] (3) Clean the main body of the magnesium-calcium alloy bone nail with pure water.

[0057] Wherein, the preparation method of silver-copper target material comprises the following steps:

[0058] a. Melting copper and silver under a protective atmosphere to obtain a liquid alloy;

[0059] b. Spraying and cooling the liquid alloy in sequence to obtain silver-copper alloy ingots;

[0060] c. performing homogenization a...

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Abstract

The invention provides a degradable magnesium alloy laminating bone nail and a preparation method thereof. The degradable magnesium alloy laminating bone nail comprises a magnesium alloy bone nail body and a silver-copper alloy layer deposited on the magnesium alloy bone nail body. The thickness of the silver-copper alloy layer ranges from 0.05 micrometer to 5 micrometers. Compared with the priorart, the silver-copper alloy layer is deposited on the magnesium alloy bone nail body, and the silver-copper alloy layer has the main effects of resisting bacteria, resisting infections and reducing inflammation complications. Meanwhile, the mechanical performance is good, the in-vivo using time can be prolonged, and therefore the degradable magnesium alloy laminating bone nail can be functionallymatched with the bone tissue sufficient repair action time. In addition, the silver ingredient in the silver-copper alloy layer has the good biologic compatibility, and the degraded Ag+ and Cu2+ havethe quite good bacteriostatic action.

Description

technical field [0001] The invention belongs to the field of magnesium alloys, and in particular relates to a degradable magnesium alloy film-covered bone nail and a preparation method thereof. Background technique [0002] As an important development direction in the field of biomaterials, biodegradable materials have attracted the attention of many scholars. Common biodegradable materials include polymer materials (such as polylactic acid), certain ceramic materials (such as calcium phosphate) and metal materials, among which the strength of polymer materials is low, while the toughness of ceramic materials is poor. In recent years, research on a new generation of medical degradable metal materials represented by biodegradable magnesium alloys has attracted people's attention. [0003] The advantages of magnesium alloys are as follows: [0004] (1) Magnesium (1.738g / cm3) and its alloys (1.75-1.85g / cm3) have a low density, less than 1 / 3 of the density of medical titanium ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C5/08C22C9/00C23C14/35C23C14/16B22F3/115C22F1/14C22F1/08A61L31/02A61L31/08A61L31/14A61L31/16
CPCA61L31/022A61L31/088A61L31/14A61L31/148A61L31/16A61L2300/102A61L2300/104A61L2300/404A61L2300/41A61L2400/18A61L2420/02A61L2420/06B22F3/115C22C5/08C22C9/00C22F1/08C22F1/14C23C14/165C23C14/3414C23C14/35
Inventor 李扬德滑有录李卫荣李扬立德
Owner 东莞立德生物医疗有限公司
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