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Uncemented tibial component of trabecular structure and making method of uncemented tibial component

A trabecular bone and bone cement technology, applied in the direction of bone implants, etc., can solve the problems of the complex connection structure of the tibial plateau and the cushion, affecting the service life of the artificial knee joint prosthesis, and the instability of the combination of the tibial plateau and the cushion. , to improve the early fixation effect and long-term stability, improve the fixation effect, and save the installation steps.

Inactive Publication Date: 2018-06-29
上海科太迈迪医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. The connection structure between the tibial platform and the liner is complicated, and the matching accuracy is high;
[0006] 2. The combination of the tibial plateau and the liner is unstable, and there is a possibility of loosening to a certain extent, which will aggravate the wear of the back (the contact surface between the liner and the tibial plateau) and affect the service life of the artificial knee prosthesis

Method used

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  • Uncemented tibial component of trabecular structure and making method of uncemented tibial component
  • Uncemented tibial component of trabecular structure and making method of uncemented tibial component
  • Uncemented tibial component of trabecular structure and making method of uncemented tibial component

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Embodiment Construction

[0037] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0038] See Figure 1 ~ Figure 4 As shown, in a specific embodiment of the present invention, the cementless tibial component of the trabecular bone structure of the present invention includes a tibial plateau 1, a liner 2 and a trabecular bone structure 3, and the trabecular bone structure 3 is set On the lower surface 11 of the tibial plateau 1, the tibial plateau 1 and the trabecular bone structure 3 are integrally formed, the liner 2 is welded on the upper surface 12 of the tibial plateau 1, and the tibial plateau The upper surface 12 of the platform 1 is a rough surface with a microporous structure. The microporous structure has no special requirements, tetrahedrons and hexahedrons are acceptable, and the liner raw material 4 to be processed in a molten state (mentioned in the step (2) of the preparation method below) can enter the micro...

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Abstract

The invention provides an uncemented tibial component of a trabecular structure. The uncemented tibial component comprises a tibial plateau, a liner and the trabecular structure, wherein the trabecular structure is arranged on the lower surface of the tibial plateau; the tibial plateau and the trabecular structure are integrally molded; the liner is melted on the upper surface of the tibial plateau; and the upper surface of the tibial plateau is a rough surface having a micro-porous structure. Preferably, the porosity of the trabecular structure is 50-65%. The aperture of the trabecular structure is 300-800[mu]m. The tibial plateau is a metal tibial plateau. The trabecular structure is a metal trabecular structure. The liner is a non-metal liner. The invention also provides a making methodof the uncemented tibial component of the trabecular structure. The uncemented tibial component of the trabecular structure provided by the invention is firm and stable in structure, and a postoperative early fixing effect and long-term stabilization can be improved; and the uncemented tibial component is simple and convenient to use, long in service life, skillful in design, concise in structureand simple and convenient to make.

Description

technical field [0001] The invention relates to the technical field of orthopedic medical devices, in particular to the technical field of knee joint prosthesis replacement, in particular to a cementless tibial component with a trabecular bone structure and a preparation method thereof. Background technique [0002] Artificial knee arthroplasty is currently one of the most effective surgical treatments for relieving patients' pain and dysfunction. The fixation methods are divided into two categories: bone cement fixation and bone cement-free fixation. Bone cement fixation technology was applied earlier, and there were often risks such as loosening of artificial joints, osteolysis, and increased tibial stress shielding effect; non-cemented fixation was applied later, but there are also phenomena such as early instability of fixation and loosening of tibial components. It can be said that bone cement fixation is still one of the most commonly used ways of artificial knee joint...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28
Inventor 夏慎朱梁刘海波周彤宋亚杰
Owner 上海科太迈迪医疗器械有限公司
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