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Knee joint replacement prosthesis

A technology for knee joint replacement and prosthesis, which is applied in the field of medical devices and can solve problems such as increased tibial pad wear and prosthesis failure

Active Publication Date: 2021-05-28
BEIJING LIDAKANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to ensure that the femoral condyle moves more smoothly and stably, the mating surface of the femoral condyle and the tibial pad is usually a curved surface. When the femoral condyle moves relative to the tibial pad, the curved surface will cause the tibial pad to move slightly and increase the impact on the tibial pad. wear caused by the tibial pad, and further prosthetic failure when the tibial pad has a greater range of motion within the tibial tray

Method used

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  • Knee joint replacement prosthesis
  • Knee joint replacement prosthesis
  • Knee joint replacement prosthesis

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Embodiment Construction

[0036] The following is attached Figure 1-5 The application is described in further detail.

[0037] The embodiment of the present application discloses a knee joint replacement prosthesis. refer to figure 1 , the knee joint replacement prosthesis includes a femoral condyle 1 , a tibial tray 2 and a tibial pad 3 between the femoral condyle 1 and the tibial tray 2 . Among them, the femoral condyle 1 is used to be installed on the lower end of the human femur, the tibial support 2 is used to be installed on the upper end of the human tibia, the tibial pad 3 is installed on the tibial support 2, and the side of the tibial support 3 away from the tibial support 2 is an arc The shape is used to cooperate with the femoral condyle 1, and when the human body moves, the lower end of the femoral condyle 1 will rotate on the tibial pad 3.

[0038] refer to figure 2 and image 3 , the tibial pad 3 can be made of ultra-high molecular weight polyethylene or highly cross-linked ultra-...

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Abstract

The invention relates to a knee joint replacement prosthesis, and relates to the field of medical instruments. The knee joint replacement prosthesis comprises a femoral condyle, a tibia support and a tibia pad located between the femoral condyle and the tibia support, the cross section of the tibia pad is in a semicircular shape, and the tibia pad comprises a clamping part matched with the tibia support and an abutting part fixedly connected to one end of the clamping part; the tibia support is provided with a containing groove allowing the clamping part to be embedded therein. The fixing platform prosthesis has the advantages that when the fixing platform prosthesis is used for knee joint replacement, the selectable models of the femoral condyle in the operation are increased, and the coverage rate of the femoral condyle is increased; meanwhile, the tibia pad is fixed more firmly, micromotion generated by the tibia pad is reduced, abrasion caused to the tibia pad is reduced, and the probability of prosthesis failure is reduced.

Description

technical field [0001] The present application relates to the field of medical devices, in particular to a knee joint replacement prosthesis. Background technique [0002] A unicompartmental knee prosthesis is a surgical implant used to replace the knee joint and is used in unicompartmental knee replacement surgery. Compared with total knee replacement surgery, unicompartmental knee replacement surgery can significantly reduce intraoperative bleeding and postoperative recovery time. Because it retains the anterior and posterior cruciate ligaments of the human body, it maintains the normal knee joint Dynamics, so that patients can get a higher level of postoperative knee mobility. [0003] For unicompartmental knee replacement surgery, whether it can be stably and firmly matched in the patient's body while recovering postoperative function, minimize postoperative pain, and increase the index of the prosthesis being forgotten is crucial. important. The existing knee joint p...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/3877A61F2/3859A61F2/389A61F2002/30329A61F2002/2892A61F2002/2825
Inventor 张亚鹏马淑芹张天宇
Owner BEIJING LIDAKANG TECH
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