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Zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing oxide layer and preparation method

A zirconium-niobium alloy and tibial plateau technology is applied in the field of zirconium-niobium alloy trabecular single-compartment tibial plateau prosthesis and preparation containing oxide layer, which can solve the problem of powder failure to obtain good fusion, uneven microstructure and mechanical properties. Good biocompatibility, low artifact, and enhanced compressive yield strength

Pending Publication Date: 2021-01-01
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 bone trabecula unicompartment tibial plateau prosthesis containing oxide layer and preparation method
  • Zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing oxide layer and preparation method
  • Zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing oxide layer and preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The preparation method of the unicompartmental tibial plateau prosthesis of zirconium-niobium alloy containing oxide layer comprises the following steps:

[0035] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the unicompartment tibial plateau prosthesis of zirconium-niobium alloy trabecular bone containing oxide layer was obtained through 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;

[0036] 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 another...

Embodiment 2

[0045] The preparation method of the unicompartmental tibial plateau prosthesis of zirconium-niobium alloy containing oxide layer comprises the following steps:

[0046] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the unicompartment tibial plateau prosthesis of zirconium-niobium alloy trabecular bone containing oxide layer was obtained through 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;

[0047] 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 another...

Embodiment 3

[0056] The preparation method of the unicompartmental tibial plateau prosthesis of zirconium-niobium alloy containing oxide layer comprises the following steps:

[0057] 1) Using zirconium-niobium alloy powder as raw material, the first intermediate product of the unicompartment tibial plateau prosthesis of zirconium-niobium alloy trabecular bone containing oxide layer was obtained through 3D printing, and the first intermediate product was 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;

[0058] 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 for another 3...

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Abstract

The invention discloses a zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing an oxide layer and a preparation method. The preparation method includes the stepsthat zirconium-niobium alloy powder is taken as a raw material; a zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis intermediate product containing the oxide layer is integrally formed and obtained through 3D printing; and the zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing the oxide layer is obtained through hot isostatic pressing, cryogenic treatment, and surface oxidation. The zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing the oxide layer comprises a tibial plateau support body, a side wall is arranged on the upper surface of the straight line edge of the tibial plateau support body, a semi-oval keel with a long circular hole is arranged at the position, close to the sidewall, of the lower surface of the tibial plateau support body, and a bone trabecula is arranged on the lower surface of the tibial plateau support body and the semi-oval keel. According to the zirconium-niobium alloy bone trabecula unicompartment tibial plateau prosthesis containing the oxide layer and the preparation method, 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 the plasticity of a solid part are enhanced.

Description

technical field [0001] The invention belongs to the field of artificial joints, in particular to a single-compartment tibial platform prosthesis of zirconium-niobium alloy containing an oxide layer and a preparation method. Background technique [0002] The unicompartmental knee prosthesis is used to replace the unilateral diseased compartment of the knee joint. It has the characteristics of small surgical incision, less intraoperative osteotomy, and preservation of the knee ligament structure. Therefore, the recovery after unicompartmental replacement is fast and the preservation normal knee motion and proprioception. [0003] Biological unicompartmental knee prosthesis can achieve effective fit between bone tissue and prosthesis interface, avoiding the defects caused by bone cement fixation. At present, most biological unicompartmental knee prostheses are double-coated (titanium microporous + HA coating), which has problems such as coating peeling off and uneven coating t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38A61F2/30B22F5/00B33Y10/00B33Y70/00C22C16/00
CPCA61F2/389A61F2/30942B22F5/00B33Y10/00B33Y70/00C22C16/00A61F2002/30985A61F2002/3006
Inventor 王献抗叶金铎曹雨杨友张月静李莉
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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