Force-closed knee replacement prosthesis

A knee joint replacement and prosthesis technology, which is applied in the directions of knee joint, prosthesis, elbow joint, etc., can solve the problems of joint lesions, femoral prosthesis and tibial prosthesis are prone to loosening, and contact parts are worn out.

Inactive Publication Date: 2010-02-24
BEIHANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the application of orthopedic artificial joints is becoming more and more extensive, and has restored joint function for many joint patients. At present, most of the existing artificial joints are of open structure, and the phenomenon of loosening between the femoral pro

Method used

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  • Force-closed knee replacement prosthesis
  • Force-closed knee replacement prosthesis
  • Force-closed knee replacement prosthesis

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The invention relates to a force-closed knee joint replacement prosthesis, which is a total knee joint replacement prosthesis imitating the distal femur of a human knee joint based on the space parallel mechanism theory, and belongs to the technical field of biomedical engineering. see figure 1 , Figure 1A , Figure 1B As shown, the force-closed knee replacement prosthesis of the present invention is composed of a femoral prosthesis 1, a femoral bearing 2, a tibial bearing 3, a rotating link assembly 4, an anterior cruciate ligament branch chain 5 and a posterior cruciate ligament branch chain 6 . The femoral prosthesis 1 is installed on the femoral bearing 2, and the rotating link assembly 4, the anterior cruciate ligament branch chain 5 and the posterior cruciate ligament branch chain 6 are installed between the femoral bearing 2 and the tibial b...

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Abstract

The invention discloses a force-closed knee replacement prosthesis which is composed of a thighbone prosthesis, a thighbone support, a shin bone support, a rotating link rod component, an anterior cruciate ligament branched chain and a posterior cruciate ligament branched chain; the thighbone prosthesis is arranged on the thighbone support, and the rotating link rod component, the anterior cruciate ligament branched chain and the posterior cruciate ligament branched chain are arranged between the thighbone support and the shin bone support. The patellar surface profile of the thighbone prosthesis is a 3D thighbone patellar surface profile which is re-built by thighbone CT/MRI scanning based on knee joints of a replaced person. In the force-closed knee replacement prosthesis, the anterior cruciate ligament branched chain adopts a fixed long rod piece structure, and the posterior cruciate ligament branched chain adopts a spherical hinge with a spring structure to be connected, so as to avoid the phenomenon of negative bending angle and overlarge bending angle in the bending/stretching process of the joints and be capable of realizing bending movement of the knee joint prosthesis within a range of from 0 degree to 135 degrees.

Description

technical field [0001] The invention relates to a joint replacement prosthesis, more particularly, a force-closed joint replacement prosthesis used for knee joints, which belongs to medical devices. Background technique [0002] At present, the application of orthopedic artificial joints is becoming more and more extensive, and has restored joint function for many joint patients. At present, most of the existing artificial joints are of open structure, and the phenomenon of loosening between the femoral prosthesis and the tibial prosthesis is easy to occur. In addition, the prosthesis High-level joints are often used between components, which will cause a lot of wear on the contact parts, and in severe cases, it will lead to secondary operations and joint lesions caused by abrasive particles. Contents of the invention [0003] The object of the present invention is to provide a force-closed knee replacement prosthesis. The prosthesis imitates the biological structure desig...

Claims

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Application Information

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IPC IPC(8): A61F2/38
CPCA61F2/38A61F2002/30001
Inventor 黄荣瑛许勇刚徐强郑红光郭云飞
Owner BEIHANG UNIV
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