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Zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing oxide layer and preparation method

A zirconium-niobium alloy and trabecular bone technology, which is applied in the field of oxidized layer-containing zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis and preparation, can solve the problems of powder failure to be well sintered, uneven microstructure, and mechanical properties. To improve long-term stability, excellent biocompatibility, and low artifacts

Pending Publication Date: 2021-02-02
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, many years of clinical application have found that bone cement fixation can bring many safety and effectiveness problems: bone cement monomer polymerization releases heat, causing damage to surrounding tissues; if bone cement particles enter the blood or cause high pressure in the medullary cavity during filling, it will cause pulmonary embolism and fat embolism
However, the solid part of 3D printing products is prone to problems such as uneven microstructure and internal defects, and the mechanical properties are not good; the powder in the structure of the trabecular bone is not well sintered, and the mechanical properties are poor.

Method used

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  • Zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing oxide layer and preparation method
  • Zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing oxide layer and preparation method
  • Zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing oxide layer and preparation method

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Experimental program
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Effect test

Embodiment 1

[0052] The preparation method of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis comprising the oxide layer comprises the following steps:

[0053] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis containing the oxide layer was obtained by 3D printing, and the first intermediate product was put into a hot isostatic pressing furnace. Under the protection of helium, raise the temperature to 1250°C, place it at a constant temperature of 180MPa for 3 hours, drop to normal pressure, and take it out with the furnace cooling to below 200°C to obtain the second intermediate product;

[0054] 2) Place the second intermediate product in a programmed cooling box to cool down to -80°C at a rate of 1°C / min, place it at a constant temperature for 10 hours, and take it out of the programmed cooling box; place it in liquid nitrogen for ...

Embodiment 2

[0074] The preparation method of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis comprising the oxide layer comprises the following steps:

[0075] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis containing the oxide layer was obtained by 3D printing, and the first intermediate product was put into a hot isostatic pressing furnace. Under the protection of helium, raise the temperature to 1325°C, place it at a constant temperature of 160MPa for 2 hours, drop to normal pressure, and take it out with the furnace cooling to below 200°C to obtain the second intermediate product;

[0076] 2) Place the second intermediate product in a programmed cooling box to cool down to -100°C at a rate of 1°C / min, place it at a constant temperature for 7 hours, and take it out of the programmed cooling box; place it in liquid nitrogen for ...

Embodiment 3

[0094] The preparation method of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis comprising the oxide layer comprises the following steps:

[0095] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the zirconium-niobium alloy partitioned bone trabecular femoral condyle prosthesis containing the oxide layer is obtained through 3D printing, and the first intermediate product is put into a hot isostatic pressing furnace , under the protection of argon, raise the temperature to 1400°C, place it at a constant temperature of 140MPa for 1 hour, drop to normal pressure, and take it out with the furnace cooling to below 200°C to obtain the second intermediate product;

[0096] (2) Place the second intermediate product in a programmed cooling box to cool down to -120°C at a rate of 1°C / min, place it at a constant temperature for 5 hours, and take it out of the programmed cooling box; place it in liquid nitrogen f...

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Abstract

The invention discloses a zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing an oxide layer and a preparation method. The preparation method comprises the following steps: zirconium-niobium alloy powder serves as a raw material, an intermediate product of the zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing the oxide layer is obtained through 3D printing integral forming, and then the zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing the oxide layer is obtained through hot isostatic pressing, cryogenic treatment and surface oxidation; and partitioned bone trabecula is arranged at part of the zirconium-niobium alloy partitioned bone trabecula femoral condyle prosthesis containing the oxide layer. According to the invention, micro-strain of most areas of the femoral condyle bone tissue is between the minimum effective strain threshold value and the super-physiological strain threshold value, so that the bone ingrowth is facilitated, and the long-term stability is improved. Excellent biocompatibility and bone ingrowth of an osseointegration interface and super-strong wear resistance and low wear rate of a friction interface are integrally realized. The bone trabecula part has excellent compression resistance; and the compressive yield strength and plasticity of a solid part are enhanced.

Description

technical field [0001] The invention relates to the technical field of medical implant materials, in particular to a zirconium-niobium alloy partitioned trabecular femoral condyle prosthesis containing an oxide layer and a preparation method thereof. Background technique [0002] Total knee arthroplasty is currently an effective clinical treatment for end-stage knee joint diseases. It uses artificially designed joint prostheses to replace damaged knee joint tissue, thereby relieving patients' pain, restoring their knee joint function, and improving their lives. quality. Corresponding to the anatomical structure of the human body, the composition of the knee joint prosthesis includes the femoral condyle, the tibial plateau and the plateau pad. With the rapid development of medical device technology and the continuous improvement of people's requirements for the safety and effectiveness of prosthetic products, the design and manufacturing technology of knee prosthesis will ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38B22F5/00B22F10/64B22F10/62B33Y10/00B33Y40/20B33Y70/00C22C16/00C23C8/12
CPCA61F2/3859B22F5/00B22F3/00B22F3/15B22F3/24B33Y10/00B33Y40/20B33Y70/00C22C16/00C23C8/12B22F2003/248B22F2003/241A61F2002/3006A61F2002/30934A61F2002/3093A61F2002/30985A61F2310/00089B22F10/64C22C1/0458B22F10/10B22F10/20B22F2998/10B22F10/60C23C8/02C23C8/80A61F2/30767A61F2002/3092A61F2002/30955A61F2002/30011C22F1/186C22F1/02Y02P10/25B22F3/11B22F3/1109B22F10/66B22F10/62
Inventor 刘璐赵朝盛尹方周红秀刘念
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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