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Knee joint prosthesis

A knee joint prosthesis and tibial plateau technology, which is applied in the field of knee joint prostheses, can solve the problems of increasing the number of injured patients, the gasket is easily prolapsed from the tibial plateau, etc., and achieves the effect of reducing the possibility of injury.

Active Publication Date: 2018-06-22
BEIJING AKEC MEDICAL
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to provide a knee joint prosthesis to solve the problem in the prior art that the spacer is easy to fall out of the range of the tibial plateau, thereby increasing the possibility of injury to the patient

Method used

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Embodiment Construction

[0029] The knee joint assembly of the present application is arranged between the femur and the tibia. The knee joint consists of the medial and lateral condyles of the femur, the medial and lateral condyles of the tibia, and the patella. It is the largest joint in the human body with the most complex structure and high chance of injury. The current medical field can provide prosthetic treatment methods for knee joint problems to replace native bone. Knee joint replacement can be divided into unicompartmental replacement, knee surface replacement and hinged total knee replacement. For simple medial or lateral septal lesions, unicompartmental replacement can theoretically be selected, that is, only the medial femoral condyle and medial tibial condyle or the lateral femoral condyle and lateral tibial condyle are replaced. The current unicompartmental knee replacement (UKA) thinks that the relative movement range between the femoral condyle, the tibial plateau and the spacer is li...

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Abstract

The invention provides a knee joint prosthesis arranged between the femur and the tibia. The knee prosthesis comprises a femoral condyle, a tibial plateau and a gasket, wherein the femoral condyle isarranged at the end, close to the tibia, of the femur, and a first curved surface is arranged on the side, facing the tibia, of the femoral condyle; the tibial plateau is arranged at the end, close tothe femur, of the tibia, and a second curved surface is arranged on the side, facing the femur, of the tibial plateau; the gasket is arranged between the femoral condyle and the tibial plateau, and athird curved surface matched with the first curved surface is arranged on the side, facing the femur, of the gasket; the gasket can move relative to the femoral condyle along the first curved surface, and a fourth curved surface matched with the second curved surface is arranged on the side, facing the tibia, of the gasket; the gasket can move relative to the tibial plateau along the second curved surface. According to the technical scheme, the problem that in the prior art, a gasket is easily separated from the tibial plateau and accordingly the possibility of injuries of surgical patients is increased is effectively solved.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a knee joint prosthesis. Background technique [0002] Unicompartmental knee arthroplasty (UKA) has been used for more than 30 years in the treatment of unicompartmental tibiofemoral arthritis. Despite poor early reports, it has now been developed as a safe and reliable treatment. To ensure the curative effect of UKA, it is necessary to select appropriate cases, superb surgical skills, and avoid overcorrection of deformities. This approach is suitable for patients with localized pain, good range of motion, and solitary tibiofemoral arthritis on imaging. Compared with total knee arthroplasty, UKA has greater range of motion, higher patient satisfaction, and comparable mid-term prosthetic survival. [0003] Currently there are two main design patterns for unicompartmental knee arthroplasty (UKA) tibial components: [0004] Fixed spacer structure, the spacer is fixed on the tibial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/38A61F2/3859A61F2/389
Inventor 王彩梅
Owner BEIJING AKEC MEDICAL
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