Low-alloyed degradable miniature inner fixed assembly, magnesium alloy preparation method and magnesium alloy material

A technology of fixing components and magnesium alloys, applied in the direction of fixators, fastening devices, internal bone synthesis, etc., can solve the adverse effects of cell proliferation and osseointegration around bone screws, aggravated corrosion of pure magnesium, and decreased mechanical properties of bone screws, etc. problems, to achieve the effect of solving the problem of galvanic corrosion, low impurity content and low alloying element content

Pending Publication Date: 2018-07-03
西安卓恰新材料科技有限公司
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  • Application Information

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Problems solved by technology

The intensified corrosion of pure magnesium not only reduces the mechanical properties of bone scr

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  • Low-alloyed degradable miniature inner fixed assembly, magnesium alloy preparation method and magnesium alloy material
  • Low-alloyed degradable miniature inner fixed assembly, magnesium alloy preparation method and magnesium alloy material
  • Low-alloyed degradable miniature inner fixed assembly, magnesium alloy preparation method and magnesium alloy material

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Example Embodiment

[0044] Such as figure 1 As shown, the present invention is a low alloying and degradable micro internal fixation component, a magnesium alloy preparation method and a magnesium alloy material. The magnesium alloy preparation method includes material selection S1, smelting S2, solution heat treatment S3, rolling S4, post-rolling heat treatment S5 and other steps.

[0045] Material selection step S1: Use pure magnesium ingots with a purity of greater than 99.99% as the magnesium raw material, use zinc granules with a purity of greater than 99.9% as the zinc raw material, and use a magnesium-calcium intermediate alloy with a purity of more than 99.99% as the calcium raw material to prepare calcium (Ca) The mass fraction is 0.01%~0.1%, the mass fraction of zinc (Zn) is 0.8%~2.5%, and the rest is magnesium. The single content of impurities such as aluminum, iron, copper, manganese, silicon, and nickel does not exceed 0.005%, and the total content of impurities does not exceed 0.01 % M...

Example Embodiment

[0057] Example 1

[0058] The raw material configuration is based on the following alloy raw materials: magnesium ingots with a purity of greater than 99.99% are used as the magnesium raw materials, magnesium with a purity of greater than 99.99% -5.97% calcium master alloy (Mg-Ca) as the calcium raw material, and zinc with a purity of more than 99.9% Granules are used as zinc raw materials.

[0059] The smelting process is as follows: the pure magnesium ingot and Mg-Ca master alloy are cleaned in a 5% hydrochloric acid ethanol solution to remove the surface oxide layer, dried under an argon protective atmosphere, and placed in a graphite crucible. Pure zinc particles Put it into the secondary feeding hopper. Evacuate until the vacuum degree of the vacuum furnace is lower than 0.01Pa, and then fill with high-purity argon until the vacuum pressure gauge shows -0.03MPa. After the furnace is inflated and washed twice, the raw materials in the crucible are heated. After the magnesium i...

Example Embodiment

[0070] Example 2

[0071] The raw material configuration is first based on the following alloy raw materials: magnesium ingots with a purity of greater than 99.99% as the magnesium raw materials, magnesium with a purity of greater than 99.99%-2.6% calcium master alloy (Mg-Ca) as the calcium raw material, and zinc with a purity of greater than 99.9% Granules are used as zinc raw materials.

[0072] The smelting process is as follows: the pure magnesium ingot and (Mg-Ca) master alloy are cleaned in a 5% hydrochloric acid ethanol solution to remove the surface oxide layer, dried in an argon atmosphere, and placed in a graphite crucible. The zinc granules are put into the secondary feeding hopper. Evacuate until the vacuum degree of the vacuum furnace is lower than 0.01Pa, and then fill with high-purity argon until the vacuum pressure gauge shows -0.03MPa. After the furnace is inflated and washed twice, the raw materials in the crucible are heated. After the magnesium ingot and the in...

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Abstract

The invention discloses a low-alloyed degradable miniature inner fixed assembly, a magnesium alloy preparation method and a magnesium alloy material. The low-alloyed magnesium alloy material which ismicro in impurity content and low in degrading rate is obtained by means of the preparation methods of smelting, solution heat treatment and the like. Different strength and plasticity are matched bymeans of adjusting and rolling and post-rolling annealing process of the magnesium alloy material, so as to prepare medical implant miniature inner fixed assemblies which have different demands on strength and plasticity.

Description

technical field [0001] The invention relates to a technology applied in the field of internal fixation of fractures in maxillofacial surgery, mainly a low-alloy degradable miniature internal fixation component, a magnesium alloy preparation method and a magnesium alloy material. Background technique [0002] Due to trauma, traffic accidents or diseases, the number of patients who need internal fixation repair surgery for human maxillofacial fractures is increasing year by year. Currently, the miniature internal fixation components used in clinical maxillofacial surgical fixation repair include bone plates and osteosynthesis screw. Miniature internal fixation components used in maxillofacial repair have the following mechanical performance requirements: the bone plate will be bent repeatedly during use to fit the bones of the injured parts of different patients, so it is required to have good plasticity and appropriate strength, and be able to withstand It can be bent and de...

Claims

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Application Information

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IPC IPC(8): A61B17/80A61B17/86C22C23/04C22C1/03C22F1/06
CPCA61B17/8057A61B17/8061A61B17/808A61B17/8615C22C1/03C22C23/04C22F1/002C22F1/06A61B2017/00831
Inventor 展京美王颖益明星肖杰
Owner 西安卓恰新材料科技有限公司
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