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Zirconium-niobium alloy ankle joint prosthesis system containing oxide layer and preparation method thereof

A technology of zirconium-niobium alloy and ankle joint, which is applied in the field of zirconium-niobium alloy ankle joint prosthesis system and preparation with oxide layer, which can solve the problems of powder failure to be well sintered, uneven microstructure, poor mechanical properties, etc. , to achieve the effect of improving bone ingrowth performance, excellent biocompatibility, and low artifacts

Pending Publication Date: 2021-01-29
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, 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 ankle joint prosthesis system containing oxide layer and preparation method thereof
  • Zirconium-niobium alloy ankle joint prosthesis system containing oxide layer and preparation method thereof
  • Zirconium-niobium alloy ankle joint prosthesis system containing oxide layer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The preparation method of the zirconium-niobium alloy ankle joint prosthesis system containing oxide layer comprises the following steps:

[0040] 1) Using zirconium-niobium alloy powder as the raw material, the first intermediate product of the talar component or the first intermediate product of the tibial component were respectively obtained through 3D printing. Under gas protection, raise the temperature to 1250°C, place it at 180MPa at a constant temperature for 3 hours, drop to normal pressure, and take it out with the furnace cooling to below 200°C to obtain two second intermediate products;

[0041] 2) Place the two second intermediate products in a programmed cooling box to cool down to -80°C at a rate of 1°C / min, place them at a constant temperature for 10 hours, and take them out of the programmed cooling box; place them in liquid nitrogen for another 16 hours, adjust Temperature to room temperature, obtain two kinds of the 3rd intermediate product;

[0042]...

Embodiment 2

[0053] The preparation method of the zirconium-niobium alloy ankle joint prosthesis system containing oxide layer comprises the following steps:

[0054] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the talar component or the first intermediate product of the tibial component were respectively obtained through 3D printing, and the two first intermediate products were put into a hot isostatic pressing furnace, and heated in helium Under gas protection, 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 two second intermediate products;

[0055] 2) Place the two second intermediate products in a programmed cooling box to cool down to -100°C at a rate of 1°C / min, place them at a constant temperature for 7 hours, take them out of the programmed cooling box; place them in liquid nitrogen for another 24 hours,...

Embodiment 3

[0065] The preparation method of the zirconium-niobium alloy ankle joint prosthesis system containing oxide layer comprises the following steps:

[0066] 1) Using zirconium-niobium alloy powder as the raw material, the first intermediate product of the talus component or the first intermediate product of the tibial component were respectively obtained through 3D printing, and the two first intermediate products were put into a hot isostatic pressing furnace, and put into In the hot isostatic pressing furnace, under the protection of argon, the temperature was raised to 1400°C, placed at a constant temperature of 140MPa for 1 hour, lowered to normal pressure, and taken out with the furnace cooled to below 200°C to obtain two second intermediate products;

[0067] 2) Place the two second intermediate products in a programmed cooling box to cool down to -120°C at a rate of 1°C / min, place them at a constant temperature for 5 hours, and take them out of the programmed cooling box; p...

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Abstract

The invention relates to a zirconium-niobium alloy ankle joint prosthesis system containing oxide layer and a preparation method thereof. The preparation method comprises the steps that zirconium-niobium alloy powder serves as a raw material, an intermediate product of a talus component and an intermediate product of a tibia component are obtained through 3D printing integral forming, and the talus component or the tibia component is obtained through hot isostatic pressing, cryogenic cooling and surface oxidation; the tibia component is connected with the talus component in a sliding manner; bone trabecula is arranged on the lower surface of a talus component body, the outer surfaces of the two first fixing columns, the upper surface of a tibia component body and the outer surfaces of thetwo second fixing columns, and the bone ingrowth performance of the prosthesis is improved. The product is integrally formed through 3D printing, the bonding strength of the bone trabecula and a solidbody is high, falling is not likely to happen, and the service life of the prosthesis is prolonged. According to the invention, 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; no gasket is needed, and the problem of micro-motion between the tibia component and the gasket in the prior art is solved.

Description

technical field [0001] The invention relates to an ankle joint prosthesis, in particular to an oxide layer-containing zirconium-niobium alloy ankle joint prosthesis system and a preparation method. Background technique [0002] Joint replacement is currently an effective clinical treatment for end-stage joint diseases. However, the joint prosthesis has been implanted in the human body for a long time. Under the long-term effects of the complex physiological and mechanical environment in the body, soft materials, such as ultra-high molecular weight polyethylene (UHMWPE), will produce a large number of wear particles due to the wear of the articular surface. It causes a series of tissue reactions, leading to osteolysis, aseptic loosening, and failure of the prosthesis. Moreover, metal joint materials such as cobalt-chromium alloys, nickel-titanium alloys, and stainless steel alloys will release toxic metal ions such as Cr, Ni, Mn, Mo, and V plasma under the long-term joint ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42B22F3/00B22F3/15B22F3/24C22C16/00B33Y80/00B33Y10/00
CPCA61F2/4202C22C16/00B33Y10/00B33Y80/00B33Y70/00B22F10/64B22F3/15B22F10/66C23C8/10C22C1/0458B33Y40/20B22F10/20B22F2005/005C22F1/002C22F1/186A61F2002/4205B22F2998/10B22F2202/03B22F2003/247B22F10/62B22F2003/242B22F2201/03C23C8/12
Inventor 朱晓静黄洁茹叶萍赵晶刘璐
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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