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A tumor-type knee prosthesis

A knee joint prosthesis and tumor technology, which is applied in the field of medical devices, can solve the problems of deformation and fracture of connectors under force, and achieve the effect of firm locking and flexible movement.

Active Publication Date: 2020-06-09
陕西四正医疗器械有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a tumor-type knee joint prosthesis to solve the shortcomings of the current technology, which locks the extension handle firmly with the femoral part or the tibial part, avoiding deformation and fracture of the connecting parts

Method used

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  • A tumor-type knee prosthesis
  • A tumor-type knee prosthesis
  • A tumor-type knee prosthesis

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Embodiment Construction

[0050] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0051] Such as Figure 1-2 As shown, the present invention provides a tumor-type knee joint prosthesis, mainly comprising a tibial part 100, a femoral part 200, a tibial liner 400 and an extension handle 300, and one end of the tibial part 100 and the femoral part 200 is hinged through the tibial liner 400 . Extension handles 300 are coaxially fixed to the other ends of the tibial part 100 and the femoral part 200 respectively.

[0052] Such as Figure 4 As shown, the connection relationship between the tibial part 100 and the extension handle 300 is taken as an example for introduction. A fixing groove 110 is arranged coaxially with the other end face of the tibial part 100, and a tapered groove 120 is arranged at the bottom of the fixing groove 110. The radius of the tap...

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Abstract

The invention discloses a tumor-type knee joint prosthesis, comprising: a tibia part, a femur part, a tibia liner and an extension handle; wherein the femur part and the tibia liner are connected through a hinge; and the femur part performs a hinge-centered rotational motion on the tibia liner. The tibial pad and the tibial part are connected to a third groove of the tibial part by a third protrusion below the tibial pad. The extension handle is connected to the femoral or tibial part by a conical connection and interference fit. The invention firmly locks the extension handle with the femur or the tibia to avoid the force deformation and the fracture of the connector. Another object of the present invention is that once the extension handle and the femoral or tibial portion are locked, relative movement between the components or wear debris is prevented from occurring, thereby avoiding osteolysis.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a tumor-type knee joint prosthesis. Background technique [0002] A prosthesis, called a prosthesis in medicine, is a medical device that replaces a certain limb, organ or tissue of the human body. The artificial prosthesis is a substitute for damage due to causes such as arthritis. It is a man-made model. The main components include special metals such as titanium and cobalt-chromium alloys, as well as special materials such as ceramics and polymer materials. The artificial prosthesis is transplanted After being applied to the human body, side effects and corrosion are absolutely not allowed, and high-strength durability is required. It is a high-tech precision medical product. [0003] The tumor-type knee prosthesis consists of the joint part and an extended stem inserted into the medullary cavity. The traditional tumor-type knee prosthesis is fixed with a conical con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/38
CPCA61F2/3859A61F2/389A61F2002/30332A61F2002/30471A61F2002/30518
Inventor 丁罡申宝胜
Owner 陕西四正医疗器械有限责任公司
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