Talus implant

An implant, talus technology, applied in joint implants, joint implants, ankle joints, etc., can solve problems such as ankle kinematics abnormality, and achieve the effect of avoiding ankle kinematics abnormality and avoiding impact.

Pending Publication Date: 2020-03-03
SHANGHAI SANYOU MEDICAL CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the complex anatomical features of the talus are not fully reflected in the talar component of the current ankle prosthesis. The non-anatomical shape of the talus component will cause abnormal kinematics of the ankle joint after replacement.

Method used

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Embodiment Construction

[0077] 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.

[0078] Please refer to attached picture. 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 t...

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Abstract

The invention provides a talus implant, which comprises a talus prosthesis body. The bottom surface of the talus prosthesis body is provided with a supporting plane; a medial part includes a medial anterior part and a medial posterior part which are connected; a lateral part includes a lateral anterior part and a lateral posterior part which are connected; the top surface of the medial anterior part is a medial anterior top arc surface, and the top surface of the medial posterior part is a medial posterior top arc surface; the medial anterior top arc surface is tangent to the medial posteriortop arc surface; the top surface of the lateral anterior part is a lateral anterior top arc surface, and the top surface of the lateral posterior part is a lateral posterior top arc surface; the lateral anterior top arc surface is tangent to the lateral posterior top arc surface; the height of the medial highest tangent point is greater than the height of the lateral highest tangent point; the radius of the medial posterior top arc surface is greater than the radius of the medial anterior top arc surface; the radius of the medial posterior top arc surface is greater than the radius of the lateral anterior top arc surface; and the radius of the medial posterior top arc surface is greater than the radius of the lateral posterior top arc surface. The talus implant of the invention conforms tothe anatomical characteristics of the talus dome surface of the Asian ankle joint.

Description

technical field [0001] The invention relates to the technical field of medical prosthesis structures, in particular to a talus implant. Background technique [0002] The talus is the second largest tarsal bone in the human body and is critical to ankle function and biomechanics. Studies have shown that the curvature of the medial and lateral domes of the talus is asymmetric, and the curvatures of the medial and lateral domes are not the same anteriorly and posteriorly, respectively. [0003] Chinese invention patent "Full Ankle Talar Prosthesis with Anchor Holes and Grooves", the application number is CN201610170250.9, the applicant is Ritter Medical Technology Corporation of the United States, the total ankle replacement system in this patent includes talar implants parts and tibial implants. The total ankle replacement system in this patent is similar to the common ankle joint prosthesis. In the ankle joint prosthesis, the upper part of the tibial implant is connected to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/42
CPCA61F2/4202A61F2002/4207
Inventor 赵大航马昕王少白王旭范云平黄加张黄迪超张弓晧张超陈立王晨耿翔郑卜纵
Owner SHANGHAI SANYOU MEDICAL CO LTD
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