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Knee joint prosthesis

A technology of knee joint prosthesis and articular surface, which is applied in the field of knee joint prosthesis and can solve the problems of easy wear and tear of knee joint prosthesis

Pending Publication Date: 2020-05-22
BEIJING AKEC MEDICAL
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The main purpose of the present invention is to provide a knee joint prosthesis to solve the problem that the knee joint prosthesis in the related art is easy to wear

Method used

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  • Knee joint prosthesis
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Embodiment Construction

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0049] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include...

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Abstract

The invention provides a knee joint prosthesis, which comprises a tibia platform, a femur condyle component and a spacer component, wherein the femur condyle component is positioned above the tibia platform and comprises an inner condyle joint surface and an outer condyle joint surface, and the inner condyle joint surface and an outer condyle joint surface have a height difference H; the spacer component is positioned between the tibia platform and the femur condyle part and comprises an inner side spacer cooperated with the inner condyle joint surface, and an outer side spacer cooperated withthe outer condyle joint surface; a position, which corresponds to the outer side spacer, on the upper surface of the tibia platform is provided with a first spherical convex surface; the outer side spacer is movably arranged on the prosthesis platform; and in addition, the lower surface of the outer side spacer is provided with a first spherical concave surface cooperated with the first sphericalconvex surface. According to the technical scheme of the invention, the problem in the relevant art that the knee joint prosthesis is likely to abrade can be effectively solved.

Description

technical field [0001] The invention relates to the field of orthopedic implants, in particular to a knee joint prosthesis. Background technique [0002] The artificial knee prosthesis currently used for total knee replacement is mainly divided into a femoral condyle component, a spacer component, and a tibial plateau component, and some artificial knee prosthesis also includes a patella component. The basic shape of the femoral condyle component has the articular surface of the inner and outer condyles and the articular surface of the patellar slide. The spacer component has two articular surfaces, and the two articular surfaces respectively correspond to the articular surfaces of the medial and lateral condyles of the femoral condyle component to form a friction pair. The lower part of the tibial plateau is an osseointegration surface for sitting on the bone bed after the tibial osteotomy, and the upper part of the tibial plateau is a plane structure for supporting the hu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/38
CPCA61F2/389A61F2002/30329
Inventor 张卫平
Owner BEIJING AKEC MEDICAL
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