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Tibial plateau, movable plateau liner, fixed plateau liner and prosthesis system for primary total knee replacement

A tibial plateau, movable technology, applied in the field of tibial plateau, can solve the problem of not improving the fit of the platform pad and the femoral condyle in a targeted manner, and achieve the effect of improving the freedom of movement, preventing dislocation, and increasing the contact area.

Active Publication Date: 2020-09-11
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, in the prior art, there is no targeted improvement of the fit between the platform liner and the femoral condyle, especially the improvement of the fit between the platform liner and the sagittal posterior arc of the femoral condyle

Method used

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  • Tibial plateau, movable plateau liner, fixed plateau liner and prosthesis system for primary total knee replacement
  • Tibial plateau, movable plateau liner, fixed plateau liner and prosthesis system for primary total knee replacement
  • Tibial plateau, movable plateau liner, fixed plateau liner and prosthesis system for primary total knee replacement

Examples

Experimental program
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Effect test

Embodiment Construction

[0042] figure 1 Schematically shows a perspective view of the prosthesis system for primary total knee replacement, where the tibial plateau 3, the plateau liner 4, and the femoral condyle 1 have been assembled in place. The upper surface of the platform liner 4 bears the femoral condyle 1 , and the lower surface bears the tibial plateau 3 . Also shown is a central stem 310 projecting downwardly from the lower surface of the tibial plateau. The central handle 310 may have delta wings on both sides for reinforcement.

[0043] Wherein, the platform pads 4, 5 are fixed platform pads 4 or movable platform pads 5, and two different platform pads 4, 5 can be installed on the same tibial platform 3, which facilitates selection during operation.

[0044] Figure 5 A perspective view of the fixed platform liner 4 is schematically shown. The fixed platform pad 4 platform pad lower surface 430 is designed as a substantially flat shape, and has a platform pad front notch 420 at the f...

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Abstract

The invention relates to a tibial plateau. The tibial plateau is used for installing plateau liners and can realize switching of the fixed plateau liner and the movable plateau liner on the same tibial plateau. The tibial plateau comprises a tibial plateau surface, a central handle, a central hole, a dovetail part and a plateau front fixing piece, wherein the dovetail part comprises a wedge-shapedfixing structure and a guiding structure; the wedge-shaped fixing structure can be used for fixedly keeping the fixed platform liner on the tibial plateau surface; and the side surface of the platform front fixing piece and the side surface of the wedge-shaped fixing structure of the dovetail part located on the other side of the center hole are suitable for stopping the rotating movable platformliner at the same time. The invention further relates to the fixed type platform liner and the movable type platform liner which are matched with the tibial plateau. The invention also relates to a prosthesis system for primary total knee replacement, which comprises a femoral condyle, the tibial plateau and the fixed plateau liner or the movable plateau liner, wherein the femoral condyle has a high degree of conformity with the sagittal posterior arc of the movable plateau liner.

Description

technical field [0001] The invention relates to a tibial plateau, especially a posterior cruciate ligament-retaining tibial plateau. The present invention also relates to a movable platform liner and a fixed platform liner adapted to be installed on the tibial plateau. The invention also relates to a prosthetic system for primary total knee replacement comprising the femoral condyle, the tibial plateau as described above, a movable platform liner or a fixed platform liner. Background technique [0002] Total knee arthroplasty is mainly applicable to diseases such as severe knee joint pain and knee joint dysfunction. It can effectively solve the patient's knee joint symptoms, relieve the patient's pain, and restore the patient's knee joint function to a certain extent. The procedure in which a knee prosthesis replaces the native knee joint is called primary total knee arthroplasty. [0003] Knee prosthesis mainly includes PS knee prosthesis that does not retain the posterio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/38A61F2/389A61F2/3859A61F2002/30729
Inventor 周殿阁周雷黄洁茹曹雨史文刘璐
Owner JIASITE HUAJIAN MEDICAL EQUIP (TIANJIN) CO LTD
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