Knee joint prosthesis

A knee joint prosthesis and adjustment mechanism technology, applied in the field of prostheses, can solve the problems of inability to adapt, reduce the elastic modulus of materials used, reduce stress shielding, etc.

Active Publication Date: 2016-03-09
BEIJING AKEC MEDICAL
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

The current research and development direction of knee prosthesis is mainly in the aspects of prosthesis structure, applied materials and interface research, mainly by reducing the elastic modulus of the materials used, reducing stress shielding, and unable to adapt to the human bone and patient movement after implantation. habit change

Method used

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  • Knee joint prosthesis
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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0024] see Figure 1 to Figure 5 As shown, according to an embodiment of the present invention, a kind of knee joint prosthesis is provided, including femoral condyle 20, spacer 50, platform assembly 30, induction mechanism 51, adjustment mechanism and control mechanism 53, during installation, femoral condyle 20 It is fixedly mounted on the distal en...

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Abstract

The invention provides a knee joint prosthesis. The knee joint prosthesis comprises a femoral condyle fixedly installed on a distal femur, a platform component installed between a proximal tibia and the femoral condyle, a gasket installed between the femoral condyle and the platform component, a sensing mechanism arranged on the gasket and used for sensing the pressure between the femoral condyle and the gasket, an adjusting mechanism installed on the platform component and used for adjusting the position of at least part of the platform component opposite to the femoral condyle and the proximal tibia, and a control mechanism which is connected with the sensing mechanism and the adjusting mechanism and receives a signal transmitted by the sensing mechanism to control the adjusting mechanism to conduct adjustment. The femoral condyle pressure on the gasket is more balanced through self-adjustment, so that uniform pressure is applied to the inner sides and outer sides of bones of the distal femur and the proximal tibia, bone loss and prosthesis failure caused by factors such as exercise habits are avoided, and the medium-and-long-term life of the prosthesis is prolonged.

Description

technical field [0001] The invention relates to the technical field of prostheses, in particular to a knee joint prosthesis. Background technique [0002] Artificial knee replacement is currently the main method for the treatment of advanced osteoarthritis or other advanced knee lesions. Artificial knee prosthesis is an artificial organ, and its medium and long-term lifespan has become its main postoperative evaluation index. There are many factors that affect the life of artificial knee prosthesis, and stress shielding is one of the important reasons for the long-term loosening of knee prosthesis. The current research and development direction of knee prosthesis is mainly in the aspects of prosthesis structure, applied materials and interface research, mainly by reducing the elastic modulus of the materials used, reducing stress shielding, and unable to adapt to the human bone and patient movement after implantation. Habit change. Contents of the invention [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
Inventor 许奎雪孟德松庞博
Owner BEIJING AKEC MEDICAL
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