Single-compartment knee joint prosthesis and manufacturing method thereof

A knee joint prosthesis, a single room technology, applied in the direction of the knee joint, prosthesis, elbow joint, etc., can solve the problems of randomization, no porosity, no means of adjusting the modulus of elasticity or technical inspiration, etc., to avoid coating The effect of peeling off, avoiding uneven coating thickness, and ensuring long-term bone ingrowth effect

Pending Publication Date: 2020-06-30
JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the disclosure content of the Chinese invention patent application, there is no means or technical inspiration for adjusting the modulus of elasticity
In particular, the existing technology is more inclined to make trabecular bone with uniform pores, and does not propose a technical solution for randomizing the pores based on a given size

Method used

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  • Single-compartment knee joint prosthesis and manufacturing method thereof
  • Single-compartment knee joint prosthesis and manufacturing method thereof
  • Single-compartment knee joint prosthesis and manufacturing method thereof

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Experimental program
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Embodiment Construction

[0080] The unicompartmental knee joint prosthesis of the present invention will be described in detail below with reference to the accompanying drawings and embodiments. The accompanying drawings are only for explaining the present invention and should not be construed as limiting the present invention.

[0081] figure 1It schematically shows the installed unicompartment knee joint prosthesis according to the present invention, including the femoral condyle 10 installed on the femur, the tibial plateau 20 placed on the tibia, and the liner 30 connecting the femoral condyle and the tibial plateau.

[0082] figure 2 The parts of the unicompartmental knee prosthesis according to the invention are shown in an exploded perspective view, wherein for clarity the trabecular structure is shown separately from the femoral condyles and the base of the tibial plateau, which are actually One-piece molded on the femoral condyle and tibial plateau. The femoral condyle trabecular bone str...

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PUM

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Abstract

The invention relates to a single-compartment knee joint prosthesis. The single-compartment knee joint prosthesis comprises: a femoral condyle, wherein the inner side, facing the far end of the femoral head, of the femoral condyle is provided with a femoral condyle bone trabecula structure which is integrally formed through 3D printing fusion, and the inner surface of the femoral condyle bone trabecula structure is designed to be a spherical outline suitable for being in close press fit with the femur subjected to grinding treatment; a tibial plateau, wherein the lower side, facing the tibialosteotomy end, of the tibial plateau is provided with a tibial plateau bone trabecula structure which is integrally formed through 3D printing fusion; and a gasket, wherein the upper surface of the gasket is concave and fits the spherical outer side surface of the femoral condyle, and the lower surface of the gasket is a plane and fits the upper plane of the tibial plateau. The femoral condyle bone trabecula structure and the tibial plateau bone trabecula structure are formed by space-filling polyhedral unit cell structure in a topological mode, and have wire diameters or hole diameters whichare limited and randomized on the basis of set wire diameter or hole diameter parameters.

Description

technical field [0001] The invention relates to a unicompartmental knee joint prosthesis. The invention also relates to a manufacturing method of the unicompartmental knee joint prosthesis. Background technique [0002] Unicompartmental knee arthroplasty (Unicondylar Knee Arthroplasty, UKA) is a method for the treatment of unicompartmental knee joint disease. Unicompartmental knee arthroplasty offers more physiologic knee kinematics, higher range of motion, more natural knee feel, shorter hospital stay, faster recovery, and lower complication rates, As a result, a high level of activity has been achieved, and it has become an effective way of stepwise treatment for knee arthritis. However, with the trend of younger knee arthritis, patients and doctors have higher and higher requirements for the long-term survival rate and safety of implants. [0003] The fixation methods of unicompartmental knee prosthesis include bone cement fixation, non-cemented fixation, and mixed fixa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/3836A61F2002/30784A61F2002/30985A61F2240/002
Inventor 王献抗杨友张月静黄洁茹李莉刘念
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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