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Anatomical ankle prosthesis with fixing pad

An ankle joint, anatomical technology, applied in the direction of ankle joints, prostheses, joint implants, etc., can solve problems such as low stability, high loosening rate, and high revision rate of ankle joint prostheses, so as to improve stability and reduce Deformity and the effect of reducing the revision rate

Active Publication Date: 2017-11-24
ARMY MEDICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the defects of high revision rate, high loosening rate and low stability of ankle joint prosthesis existing in the prior art, the present invention provides an anatomical fixed liner ankle joint prosthesis

Method used

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  • Anatomical ankle prosthesis with fixing pad
  • Anatomical ankle prosthesis with fixing pad
  • Anatomical ankle prosthesis with fixing pad

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Embodiment Construction

[0018] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0019] Such as Figure 1-3 As shown, an anatomical fixed liner ankle joint prosthesis includes a tibial side component 1, a fixed liner 2 and a talar side component 3. It is characterized in that the top end of the tibial side component 1 is provided with an upper bearing surface 4. The four corners of the surface 4 are respectively fixed with four protruding first pins 6 fixedly connected with the osteotomized distal tibia 8, and the middle part of the tibial side component 1 is connected to the bottom end of the amputated distal tibia 8 through niche screws 7. The middle part is strengthened and fixedly connected, and the bottom end of the tibial side component 1 is provided with a lower fitting surface 5, and the lower fitting surface 5 is fitt...

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Abstract

The invention discloses an anatomical ankle prosthesis with a fixing pad. The anatomical ankle prosthesis comprises a tibia side component, the fixing pad and a talus side component and is characterized in that the top end of the tibia side component is provided with an upper supporting surface, four projection first dowels are fixedly arranged at four corners of the upper supporting surface respectively, and the middle of the tibia side component is fixedly connected to the bottom middle of an amputated tibia far end through a recess screw. The anatomical ankle prosthesis has advantages that the middle of the tibia side component is fixedly connected to a talus far end through the recess screw while the upper supporting surface are fixedly connected with the tibia far end through the four first dowels respectively, the four first dowels are in isosceles trapezoidal arrangement, stability in connection between the tibia side component and the amputated tibia far end is achieved, a lower slide surface at the bottom end of the fixing pad is in slide connection with an upper slide surface at the top end of the talus side component, and the upper supporting surface, the lower slide surface and the upper slide surface are all arc and matched with an articular surface of the tibia far end in radian to make the prosthesis better accord with a real human ankle structure.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an anatomical fixed pad ankle joint prosthesis. Background technique [0002] Artificial total ankle joint prosthesis is mainly used in patients with ankle joint pain, deformity, and loss of function caused by various trauma, autoimmune diseases, and degenerative diseases. The current commonly used total ankle joint fusion will cause patients to lose almost all ankle joints Total ankle joint replacement can preserve most of the ankle joint's motor function and completely solve the patient's pain and deformity problems. The results of domestic and foreign patent inquiries show that there is currently no design of a total ankle prosthesis that is completely bionic and conforms to the anatomical structure of the real ankle joint of the human body. Therefore, the revision rate, prosthesis loosening rate, and instability are high. It has been more than half a century since t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42
CPCA61F2/30771A61F2/4202A61F2002/4207A61F2002/4205A61F2002/30772A61F2310/00029A61F2310/00023
Inventor 朱敏唐康来王雲蛟康夏施又兴吕晶同
Owner ARMY MEDICAL UNIV
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