Manufacturing method of composite structural femoral prosthesis

Abstract

The invention discloses a manufacturing method of a composite structural femoral prosthesis. The method is characterized by comprising the following steps in sequence of three-dimensional reconstruction of a femoral prosthesis, establishment of a mathematical model of the femoral prosthesis and a connecting piece, grid division of the femoral prosthesis, finite element analysis under different biomechanical environments, determination of evaluation indexes and optimization selection, and manufacturing of the femoral prosthesis by using a 3D printing technology. The composite structural femoral prosthesis prepared by the method has relatively high tensile property and corrosion resistance, and is very close to the real bone in physical property.

Description

technical field [0001] The invention relates to a method for making a prosthesis, in particular to a method for making a composite structure femoral prosthesis. Background technique [0002] Some clinical treatment options such as arthritis, traumatic fractures, and congenital hip dysplasia usually require hemi-hip or total-hip femoral prosthesis replacement. At present, femoral prostheses commonly used in the market include metals, ceramics, organic polymer materials, etc. However, few materials can meet the two characteristics of biocompatibility and mechanical properties close to real bone materials required for complex joint replacement. . [0003] Titanium alloy prosthesis has good tensile and corrosion resistance, but its physical properties are very different from those of real bone. The physical properties of polyether ether ketone (PEEK) prosthesis and real bone, especially the elasticity The modulus is very close, but the tensile and corrosion resistance is not i...

AI Technical Summary

Problems solved by technology

Femoral prostheses commonly used in the market currently include metals, ceramics, organic polymer materials, etc. However, few materials can simultaneously meet the two characteristics of biocompatibility and mechanical properties close to real bone materials required for complex joint replacement.

[0003] Titanium alloy prosthesis has good tensile and corrosion resistance, but its physical properties are very different from those of real bone. The physical properties of polyether ether ketone (PEEK) prosthesis and real bone, especially the elasticity The modulus is very close, but the tensile and corrosion resistance is not ideal, and it is difficult to fuse with real bone

That is to say, the above two materials are difficult to meet the needs of femoral prosthesis replacement.

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