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Organism implant, components thereof and preparation method thereof

A technology of implants and organisms, applied in prosthesis, medical science, surgery, etc., can solve problems such as delayed healing, failure of magnesium alloy implants, etc.

Pending Publication Date: 2018-07-27
西安卓恰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, excessive rare earth elements will accumulate in the body and are not easily excreted from the body, especially some rare earth elements will accumulate and deposit in the bones, forming competitive adsorption with calcium and replacing calcium in the bones, resulting in delayed healing
[0006] In addition, the existing technology tries to increase the proportion of alloying elements in magnesium metal to adjust the required mechanical properties. However, alloying elements and impurities will cause the formation of different intermetallic phases, which will promote the corrosion of the magnesium substrate as the positive electrode of the primary battery during degradation. Causing magnesium alloy implants to fail prematurely during service

Method used

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  • Organism implant, components thereof and preparation method thereof
  • Organism implant, components thereof and preparation method thereof
  • Organism implant, components thereof and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] First carry out the raw material configuration according to the following alloy raw materials: magnesium ingots with a purity greater than 99.9% are used as magnesium raw materials, magnesium-5.66% calcium master alloys (Mg-Ca master alloys) with a purity greater than 99.9% are used as calcium raw materials, and zinc particles with a purity greater than 99.9% as zinc raw material.

[0052] Dry the cast iron mold at 200°C for 2 hours and then put it into a medium-frequency induction furnace (rated frequency 2500Hz). In addition, pre-bake the graphite crucible in the induction furnace for 20 minutes to remove moisture and put it into the acid-washed and dried Magnesium ingots and Mg-Ca master alloy; while zinc particles are added to the secondary feeding hopper. After closing the furnace cover, start vacuuming. When the vacuum degree reaches 0.02 Pa, start filling argon gas until the pressure gauge shows -0.076 MPa. The magnesium ingot and the master alloy have melted, s...

Embodiment 2

[0067] First carry out the raw material configuration according to the following alloy raw materials: magnesium ingots with a purity greater than 99.9% are used as magnesium raw materials, magnesium-5.66% calcium master alloys (Mg-Ca master alloys) with a purity greater than 99.9% are used as calcium raw materials, and zinc particles with a purity greater than 99.9% as zinc raw material.

[0068] Dry the cast iron mold at 200°C for 2 hours and put it into a medium-frequency induction furnace. In addition, pre-bake the graphite crucible in the induction furnace for 20 minutes to remove moisture and put it into pickled and dried magnesium ingots, Mg -Ca master alloy; while zinc pellets are added to the secondary hopper. After closing the furnace cover, start to vacuumize. When the vacuum reaches 0.02 Pa, start to fill in argon until the pressure gauge shows -0.074 MPa. At this time, start to send electricity, and the electric power is 20KW to 24KW; The master alloy has been mel...

Embodiment 3

[0082] First carry out the raw material configuration according to the following alloy raw materials: magnesium ingots with a purity greater than 99.9% are used as magnesium raw materials, magnesium-5.58% calcium master alloys (Mg-Ca master alloys) with a purity greater than 99.9% are used as calcium raw materials, and zinc particles with a purity greater than 99.9% as zinc raw material.

[0083] Dry the cast iron mold at 200°C for 2 hours and put it into a medium-frequency induction furnace. In addition, pre-bake the graphite crucible in the induction furnace for 20 minutes to remove moisture and put it into pickled and dried magnesium ingots, Mg -Ca master alloy; while zinc pellets are added to the secondary hopper. Start vacuuming after closing the furnace cover. When the vacuum degree reaches 0.02 Pa, start to fill in argon until the pressure gauge shows -0.068 MPa. The master alloy has been melted, then suspend the power transmission, and then continue the power transmis...

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Abstract

The invention relates to an organism implant, components thereof and a preparation method thereof. The organism implant is made of degradable magnesium alloy, and is particularly suitable for being used as a fixing buckle for fixing cruciate ligaments, the total mass of the components of the degradable magnesium alloy is 100%, the content of magnesium accounts for 96.49%-98.9%, the content of calcium accounts for 0.1%-0.5%, the content of zinc accounts for 1-3%, and the sum of the content of other impurities accounts for not more than 0.01%; and the degradable magnesium alloy is obtained by preparation methods of vacuum smelting, solid solution heat treatment, extrusion process and rotary forging process. According to the organism implant, the components thereof and the preparation methodthereof, the biological implant has the characteristics of high strength and low degradation rate, and is suitable for being used as a material of the organism implant.

Description

Technical field [0001] The present invention relates to a medical biological material, in particular to a biological implant made of degradable magnesium alloy, its composition and preparation method. Background technique [0002] At present, the materials used clinically for internal bone fixation are mainly metal materials such as stainless steel, titanium or titanium alloys, or absorbable polymer plastic materials. For example, implant fixation buckles used to fix grafts in cruciate ligament surgeries are currently mostly made of titanium alloy materials such as stainless steel, titanium or titanium alloys. However, the elastic modulus of metal materials such as stainless steel, titanium or titanium alloy commonly used in the existing technology is much higher than that of human bone. When used for bone fixation, it may cause a stress shielding effect, so that the damaged bone area does not receive the necessary stress stimulation, which may cause bone healing. Incomplet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/04C22C1/02A61L31/02A61L27/50A61L27/58
CPCA61L27/50A61L27/58A61L31/022C22C1/02C22C23/04
Inventor 展京美益明星王颖
Owner 西安卓恰新材料科技有限公司
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