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3D printing customized half-ankle joint prosthesis

A 3D printing, ankle joint technology, applied in 3D printing, ankle joints, prostheses, etc., can solve the problems of high risk of loosening infection, complicated prosthesis installation, loss of talus bone, etc., and achieve low prosthesis loosening and infection risk. , to ensure the overall mechanical strength, the effect of good bone ingrowth

Pending Publication Date: 2021-09-03
WEST CHINA PRECISION MEDICINE IND TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most common ankle prostheses are bipolar, that is, the distal part of the tibia and the talus. The screw assembly is fixed, and there is a risk of screw backing and loosening of the prosthesis

Method used

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  • 3D printing customized half-ankle joint prosthesis
  • 3D printing customized half-ankle joint prosthesis
  • 3D printing customized half-ankle joint prosthesis

Examples

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Embodiment Construction

[0023] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0024] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art w...

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Abstract

The invention discloses a 3D printing customized half-ankle joint prosthesis. The 3D printing customized half-ankle joint prosthesis comprises a tibia far-end prosthesis and a liner; the middle of the tibia far-end prosthesis is a circular truncated cone; the lower portion of the circular truncated cone is a supporting section; a bone trabecula structure is arranged on the peripheral surface of the supporting section; a concave opening is formed in the bottom of the supporting section; a lateral ankle part and a medial ankle part are arranged on the two sides of the concave opening respectively; and the liner is connected into the concave opening in the bottom of the supporting section. According to the 3D printing customized half-ankle joint prosthesis in the invention, a monopole mode is adopted; the sclerotin of a patient can be reserved to the maximum degree; the risks of prosthesis loosening and infection are small; according to the invention, the tibia far-end prosthesis of a solid structure is adopted; the overall mechanical strength is guaranteed; the bone trabecula structure has the good bone ingrowth and thigh crawling capacity; the stability of the prosthesis is improved; the liner can buffer the impact between the prosthesis and the talus of a human body in the movement process; and the biomechanical requirement is met.

Description

technical field [0001] The invention relates to the field of artificial prosthesis replacement, in particular to a 3D printed custom half ankle joint prosthesis. Background technique [0002] The distal tibia is one of the predilection sites for malignant bone tumors, and the ankle joint, as the joint with the highest load in the human body, is often affected by it. After distal tibiofibular resection, conventional treatment methods include allograft bone graft, fibula autograft, bone transport, etc., but ankle arthrodesis is unavoidable, that is, permanent loss of ankle joint function, and only neutral position can be maintained. The reconstruction method of ankle prosthesis has been accepted by more and more people because it can preserve most of the ankle joint function. At present, most common ankle prostheses are bipolar, that is, the distal part of the tibia and the talus. The screw assembly is fixed, and there is a risk that the screw will back off and cause the pro...

Claims

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Application Information

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IPC IPC(8): A61F2/42
CPCA61F2/4202A61F2002/4205A61F2002/3093A61F2002/30985
Inventor 闵理卢敏勋张瑀琦
Owner WEST CHINA PRECISION MEDICINE IND TECH INST
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