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Combined artificial total ankle joint prosthesis

A combined ankle joint technology, applied in ankle joints, prostheses, joint implants, etc., can solve problems such as poor bionic performance of ankle joint prosthesis, difficulty in installation and revision, wear of polymer materials, etc., to achieve Reduce prosthesis loosening complications, improve prosthesis stability, and increase the effect of contact area

Pending Publication Date: 2019-07-12
SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of poor motion bionic performance of existing ankle prosthesis, difficulty in installation and revision, and rapid wear of polymer materials, the present invention provides a combined artificial total ankle prosthesis

Method used

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  • Combined artificial total ankle joint prosthesis
  • Combined artificial total ankle joint prosthesis
  • Combined artificial total ankle joint prosthesis

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Embodiment Construction

[0045] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0046] see Figure 1 to Figure 7 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. The disclosed technical content must be within the scope covered. At the sa...

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Abstract

The invention discloses a combined artificial total ankle joint prosthesis. The combined artificial total ankle joint prosthesis comprises a tibia prosthesis, a connecting cushion and an astragalus prosthesis. The tibia prosthesis comprises a tibia prosthesis fixed part and a tibia prosthesis body connected with the tibia prosthesis fixed part. The tibia prosthesis body is provided with a cavity for containing the connecting cushion. The tibia prosthesis body is connected with the connecting cushion, the connecting cushion is provided with a hemispherical cavity, and the connecting cushion isprovided with four movable grooves. The astragalus prosthesis comprises an astragalus prosthesis movable part, an astragalus prosthesis connecting part and an astragalus prosthesis fixed part, all ofwhich are sequentially connected. The astragalus prosthesis movable part is a hemisphere and is matched with the hemispherical cavity of the connecting cushion, the astragalus prosthesis connecting part is cylindrical, four stop blocks are arranged on the side wall of the astragalus prosthesis connecting part, the four stop blocks are evenly distributed in the circumferential direction, and the four stop blocks are matched with the four movable grooves. The combined artificial total ankle joint prosthesis is good in motion bionic performance and easy to mount and renovate.

Description

technical field [0001] The invention belongs to the technical field of medical devices, in particular to a combined artificial total ankle joint prosthesis. Background technique [0002] The ankle joint is the largest load-bearing pulley joint in the human body. Its movement involves many anatomical structures such as bones, joints, and ligaments, and its biomechanics are complex. However, various severe traumas, inflammations, tumors, and deformities can lead to serious loss of ankle joint function and affect the quality of life of patients. Although artificial ankle joint replacement can replace the function of some joints and solve the pain caused by the primary disease, the rate of postoperative revision and loosening of the prosthesis is still higher than that of the artificial knee joint. An important reason for the failure of known ankle prosthesis replacement is that the structural design of the prosthesis itself is poor, and its biomechanical properties are poor. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42
CPCA61F2/4202A61F2002/4205A61F2002/4207A61F2002/30378A61F2002/30518A61F2002/30375
Inventor 郝永强杨阳子郭煜
Owner SHANGHAI NINTH PEOPLES HOSPITAL SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE
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