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Orthopedic repair implant and preparation method thereof

An implant and orthopaedic technology, applied in the field of biomedical degradable material preparation, can solve the problems of poor mechanical and mechanical properties of pure zinc implants and can not meet functional requirements, and achieves elimination of homogenization and segregation within grains, increase in surface area, The effect of accelerating the degradation rate

Active Publication Date: 2022-02-15
湖南华翔医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the mechanical and mechanical properties of pure zinc implants are relatively poor and cannot meet the functional requirements, which limits its application.

Method used

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  • Orthopedic repair implant and preparation method thereof
  • Orthopedic repair implant and preparation method thereof
  • Orthopedic repair implant and preparation method thereof

Examples

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preparation example Construction

[0037] In the embodiment of the present invention, the preparation method of biomedical degradable zinc alloy sheet material and film material from metal raw materials specifically includes:

[0038] Melting: smelting magnesium-zinc master alloy α1, iron-zinc master alloy β1, and solid solution master alloy γ1 of functional elements and zinc elements respectively. Then, the magnesium-zinc master alloy α1, the iron-zinc master alloy β1, the solid solution master alloy γ1 of functional elements and zinc elements, and the zinc ingot are smelted at a certain ratio, and the smelting solution is cast at 350-800°C in a cylindrical or In the cubic inner cavity, it is gradually cooled to room temperature to form a casting blank; the melting furnace needs to use an intermediate frequency / high frequency vacuum smelting furnace. The magnesium-zinc master alloy α1 contains at least Mg 2Zn 11 , MgZn 2 One of two co-crystals. The β1 iron-zinc master alloy contains at least FeZn 7 , FeZn...

Embodiment 1

[0064] This embodiment designs biomedical degradable zinc alloy bone plate

[0065] Formula: the biomedical degradable zinc alloy is Zn-Fe-Mg-Sn. Among them, the mass percentage content of Fe element is: 0.1%, the mass percentage content of Mg element is: 0.1%, the mass percentage content of Sn element is 0.0005%; the unavoidable impurities, the mass percentage content of a single element is not more than 0.005% , the total amount is not more than 0.01%, and the zinc element is the balance.

[0066] Preparation:

[0067] Melting: smelting magnesium-zinc master alloy α1-Zn20Mg respectively (the smelting mass ratio of metal raw materials Mg and Zn is 20:80, after mixing and melting at 580°C, casting the melt into an intermediate mold with a mold temperature of 381°C, With natural cooling to room temperature) and iron-zinc intermediate alloy β1-Zn10Fe (the melting mass ratio of metal raw materials Fe and Zn is 10:90, after mixing and melting at 672°C, cast the melt into an inte...

Embodiment 2

[0079] This embodiment relates to a biomedical degradable zinc alloy barrier repair film

[0080] Formula: the biomedical degradable zinc alloy is Zn-Fe-Mg-Sn. Among them, the mass percentage content of Fe element is: 0.2%, the mass percentage content of Mg element is: 0.04%, the mass percentage content of Sn element is: 0.0008%; for unavoidable impurities, the mass percentage content of a single element is not more than 0.005%, the total amount is not more than 0.01%, zinc element is the balance.

[0081] Preparation:

[0082] Melting: smelting magnesium-zinc master alloy α1-Zn2Mg respectively (the smelting mass ratio of metal raw materials Mg and Zn is 2:98, after mixing and melting at 580°C, casting the melt into an intermediate mold with a mold temperature of 364°C, With natural cooling to room temperature) and iron-zinc intermediate alloy β1-Zn8Fe (the melting mass ratio of metal raw materials Fe and Zn is 8:92, after mixing and melting at 672 ° C, the melt is cast to a...

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Abstract

The invention relates to the technical field of preparation of biomedical degradable materials, in particular to an orthopedic repair implant and a preparation method thereof. The preparation method specifically comprises the following steps: respectively smelting a magnesium-zinc intermediate alloy, an iron-zinc intermediate alloy and an intermediate alloy of functional elements and zinc; smelting the zinc alloy and a zinc ingot, and obtaining as-cast zinc alloy; treating as-cast zinc alloy by adopting a homogenization and deformation processing alternate treatment method, and then cleaning and cooling to obtain corresponding degradable zinc alloy plates, membranes and wires; and carrying out structural design, surface treatment, cleaning and sterilization on the degradable zinc alloy plate, the membrane material and the wire material, and then obtaining the orthopedic repair implant. According to the implant, intermediate alloy eutectics are smelted, grains are refined, the mechanical property and degradation property of the material are regulated and controlled, homogenization and deformation processing are alternately combined, homogenization segregation in the grains is eliminated, surface and internal defects introduced in the casting process are reduced, and the performance difference of the same batch of zinc alloy materials is reduced.

Description

technical field [0001] The invention relates to the technical field of preparation of biomedical degradable materials, in particular to an orthopedic repair implant and a preparation method thereof. Background technique [0002] Biomedical degradable metals refer to a class of medical metals that can be gradually corroded and degraded by body fluids in the body. The corrosion products released by them will bring appropriate host responses to the body. After assisting the body to complete the mission of tissue repair, they will be completely dissolved by body fluids. No implant remains. Since the 21st century, biomedical biodegradable metals (BiodegradableMetals) have become the hottest and most active research direction in the field of biomedical metal materials. [0003] At present, several representative series of biomedical degradable metal materials have been developed, such as magnesium-based, zinc-based, and iron-based. Corrosion rates of iron and iron-based alloys a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C18/00C22F1/16C22F1/02A61L31/02A61L31/14
CPCC22C1/03C22C18/00C22F1/165C22F1/02A61L31/022A61L31/148
Inventor 宋坤刘江
Owner 湖南华翔医疗科技有限公司
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