A kind of manufacturing method of personalized customized tantalum implant

A manufacturing method and implant technology, applied in the direction of bone implants, etc., can solve the problems of difficult and difficult processing of personalized customized tantalum implants, avoid stress shielding effect, increase the success rate, and benefit Osteogenic effect

Inactive Publication Date: 2017-06-27
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tantalum is a refractory metal, which is difficult to process by traditional machining methods
Machining of individually tailored tantalum implants is even more difficult

Method used

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  • A kind of manufacturing method of personalized customized tantalum implant
  • A kind of manufacturing method of personalized customized tantalum implant
  • A kind of manufacturing method of personalized customized tantalum implant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Reconstruct the 3D model of bone tissue in 3D modeling software using CT or MRI multi-planar reconstruction images of bone tissue in clinical patients, and then import the 3D model of bone tissue into the reverse software to design a personalized bone repair implant model ;

[0041] 2) Carry out shelling processing on the personalized bone repair implant model to obtain the shell of the model after shelling, and then add criss-cross grids 1 inside the shell of the model after shelling to obtain the implant negative body containing the grid 1 inside. type mold, wherein, the thickness h of the implant negative mold is 0.5mm, the diameter d of the network frame 1 is 0.5mm, and the distance between adjacent network frames 1 is 1mm;

[0042] 3) Utilize the 3D printer to prepare the negative mold of the implant containing the grid frame inside in step 2), such as figure 1 shown;

[0043] 4) Fill the implant negative mold with a grid frame 1 inside with expandable methyl ...

Embodiment 2

[0050] 1) Reconstruct the 3D model of bone tissue in 3D modeling software using CT or MRI multi-planar reconstruction images of bone tissue in clinical patients, and then import the 3D model of bone tissue into the reverse software to design a personalized bone repair implant model ;

[0051] 2) Carry out shelling processing on the personalized bone repair implant model to obtain the shell of the model after shelling, and then add criss-cross grids 1 inside the shell of the model after shelling to obtain the implant negative body containing the grid 1 inside. type mold, wherein, the thickness h of the implant negative mold is 0.5mm, the diameter d of the network frame 1 is 0.5mm, and the distance between adjacent network frames 1 is 1mm;

[0052] 3) Utilize the 3D printer to prepare the negative mold of the implant containing the grid frame inside in step 2), such as figure 1 shown;

[0053]4) Fill the implant negative mold with a grid frame 1 inside with expandable methyl m...

Embodiment 3

[0060] 1) Reconstruct the 3D model of bone tissue in 3D modeling software using CT or MRI multi-planar reconstruction images of bone tissue in clinical patients, and then import the 3D model of bone tissue into the reverse software to design a personalized bone repair implant model ;

[0061] 2) Carry out shelling processing on the personalized bone repair implant model to obtain the shell of the model after shelling, and then add criss-cross grids 1 inside the shell of the model after shelling to obtain the implant negative body containing the grid 1 inside. type mold, wherein, the thickness h of the implant negative mold is 0.5mm, the diameter d of the network frame 1 is 0.5mm, and the distance between adjacent network frames 1 is 1mm;

[0062] 3) Utilize the 3D printer to prepare the negative mold of the implant containing the grid frame inside in step 2), such as figure 1 shown;

[0063] 4) Fill the implant negative mold with a grid frame 1 inside with expandable methyl ...

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Abstract

The invention discloses a personally-customized tantalum implantation material manufacturing method. The method comprises the following steps of adopting CT, MRI and other scanning images for rebuilding the appearance of a prosthesis of an implantation material, designing a three-dimensional negative type model of the implantation material according to the appearance of the prosthesis of the implantation material, and then utilizing additive manufacturing for obtaining a negative type mold of a support, wherein the amount of residual carbon of the negative type model is quite low; filling the mold with spherical beads capable of being burnt off and a high residual-carbon resin and curing agent mixture or a graphite powder, resin and curing agent mixture. Pyrolysis is performed in the vacuum environment or a special atmosphere oven; due to the fact that the amount of residual carbon is quite low, the carbon support of the implantation material with spherical holes can be obtained, finally, a tantalum layer is deposited on the surface of the carbon support by means of the chemical vapor deposition method, and personally-customized tantalum implantation material manufacturing is completed. The final tantalum implantation material is the mixture, wherein metal tantalum is deposited on the surface of the mixture, the carbon support is arranged inside the mixture, and the carbon support accounts for 1%-10% of the mixture by mass.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of implant manufacture, and in particular relates to a manufacturing method of a personalized customized tantalum implant. [0003] Background technique: [0004] Compared with the most common titanium alloy currently used in medicine, porous tantalum has two advantages. On the one hand, the biocompatibility of porous tantalum is better than that of titanium alloy. Tantalum is a biologically inert material that does not react with acid and alkali at room temperature and will not be corroded in the human body. On the other hand, the elastic modulus of porous tantalum is 2.5-20GPa, which is close to the elastic modulus of human bone, which can effectively avoid the occurrence of stress shielding phenomenon, thereby reducing the risk of implant failure. However, tantalum is a refractory metal, which is difficult to process by traditional machining methods. The processing of individually tailored tantal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/28C08L75/04C08K3/04C08L61/06
Inventor 刘亚雄黄亚江王玲李涤尘靳忠民
Owner XI AN JIAOTONG UNIV
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