Method for performing EBM metal 3D printing on personalized human body thighbone prosthesis sleeve

Abstract

The invention discloses a method for performing EBM metal 3D printing on a personalized human body thighbone prosthesis sleeve. The method includes the steps that encrypted CT scanning is performed on the upper middle section of a metaphysis prosthesis part, and CTdicom data are input into Mimics software to reconstruct a grid model; surface reconstruction and smoothing processing are performed on the grid model; post-modification is performed on the bone three-dimensional grid model based on the joint prosthesis design concept; a personalized joint prosthesis three-dimensional model is generated through surface reconstruction and designing; the shape of a personalized joint prosthesis is adjusted through finite element analysis; the three-dimensional model of the implant is input into a rapid prototyping machine and printed through EBM RP technology metal 3D printing. The shape of the printed and manufactured finished product can be completely matched with that of the medullary cavity of the distal femoral metaphysic of every patient, the personalized thighbone prosthesis can be knocked to be implanted just through a few intra-operative medullary cavity files, and good initial fixation and long-time biological fixation can be achieved.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a method for EBM metal 3D printing personalized human femoral prosthesis cuff. Background technique [0002] The existing standardized artificial femoral prosthesis is designed based on the statistics of the general shape of the femoral medullary cavity, and the shape of the femoral medullary cavity varies from person to person. Therefore, the shape of the standardized artificial femoral prosthesis and the shape of the femoral medullary cavity are basically are all mismatched. During artificial total hip arthroplasty, a lot of time is spent on grinding the medullary cavity one by one and repeated mold trials. Firstly, a certain prosthetic stem is rasped to form a suitable cavity, and then the femoral stem is placed as a prosthesis. The body is implanted and knocked firmly. The problems of standard femoral stem prosthesis implantation: cumbersome and time-consumi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method of EBM metal 3D printing personalized human femoral prosthesis cuff, aiming to solve the problem that the existing standardized artificial femoral prosthesis does not match the shape of the medullary cavity naturally, and the manufacture of personalized custom femoral prosthesis is cumbersome The problem

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