An Implant Design Method Combining Macroscopic and Microscopic Topology Optimization

Abstract

The invention discloses an implant design method combining macroscopic and microscopic topology optimization, which solves the problem that the porosity and shape of the implant cannot be effectively controlled in the prior art, and has the advantages of ensuring the microporous unit mechanics. Increase the porosity of the microporous unit while increasing the performance, improve the biological performance of the implant, and design the structure that best meets the mechanical requirements while reducing the amount of materials; the technical solution is: including the following steps: the microporous unit Topology optimization of microporous units, acquisition of mechanical parameters of micropore units, image acquisition and reverse processing, macroscopic mechanical analysis, topology optimization of macroscopic structures, and generation of implants.

Description

technical field [0001] The invention relates to the field of biomedicine, in particular to an implant design method combining macro and micro topology optimization. Background technique [0002] When repairing large bone defects in the human body, due to the good biocompatibility, excellent mechanical properties, corrosion resistance and wear resistance of titanium alloys, stainless steels, CoCr alloys and other metals, they have long been used as implants or restorations. However, due to the mismatch between the rigidity of the solid metal implant and the rigidity of the bone, the phenomenon of stress shielding occurs, that is, the stress is mainly concentrated on the implant or restoration, and the stress on the part of the bone tissue will be greatly reduced. , according to wolff's law, then bone degeneration and ablation will occur, which will lead to the degeneration of bone tissue, which may lead to the loosening and failure of the implant or prosthesis. At the same t...

AI Technical Summary

Problems solved by technology

These methods can successfully form pores inside the material, but the size and shape of the porosity cannot be effectively controlled, and the performance requirements cannot be predicted, and the effective pore structure and size design cannot be reflected in the manufacturing process.

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