Octahedral rod structural units, bone implant and mass transfer performance evaluation method

Abstract

The invention discloses octahedral rod structural units, a bone implant and a mass transfer performance evaluation method. The octahedral rod structural unit consists of an octahedron composed of twelve trabeculaes and eight triangular pyramids each consisting of eight faces of the octahedron and a girders extending outward from the six vertices of the octahedron, the porosity is formed between adjacent trabeculaes, and a plurality of pores distributed in three dimensions can be formed on the octahedral structural units; the bone implant is composed of a plurality of octahedral rod structuralunits through arrangement and splicing, the rigidity of the bone implant is reduced, the stress shielding risk is avoided, and the bone implant has good biomass performance and tissue regeneration performance; a first quantitative analysis relationship between the trabecular size and the average permeability is established, and the trabecular size can be determined according to the first quantitative analysis relationship according to the preset average permeability, which provides data basis for the controllable, quantitative and scientific design of the bone implant, and is beneficial to theclinical application and promotion of the personalized bionic bone implant.

Description

technical field [0001] The invention relates to the technical field of biomedical prosthesis, in particular to an octahedron rod structural unit, a bone implant and a method for evaluating its mass transfer performance. Background technique [0002] With the deepening of the aging society and the occurrence of traffic accidents and natural disasters, the demand for bone repair and bone replacement is increasing. How to provide safe and reliable bone implants with good tissue regeneration performance (bone implants include Bone scaffolds and bone prostheses, etc., bone prosthesis includes bone plates, bone nails, etc.) has become one of the clinical problems to be solved urgently. Compared with metal solid bone implants, porous bionic bone implants have the characteristics of low stiffness, low risk of stress shielding, easy cell adhesion and growth, tissue regeneration, and personalized customization, and have huge clinical needs and broad application prospects. . [0003]...

AI Technical Summary

Problems solved by technology

At present, the porous structure of most porous bionic bone implants is designed along a single direction, with a single structure and little difference in performance; at the same time, the personalized design of porous bionic bone implants generally depends on experience and lacks controllable and quantitative methods. The scientific design method has problems such as poor bio-mass transfer performance and inability to quantify evaluation, which greatly limits the clinical application and promotion of porous bionic bone implants; moreover, the detection of bio-mass transfer performance of personalized bionic bone implants, Relying on cell culture experiments, animal experiments and other methods for qualitative analysis, the workload is large, there are many influencing factors, and preoperative quantitative description and evaluation cannot be carried out, which also hinders the clinical application of personalized bionic bone implants to a certain extent Moreover, the physical parameters such as the size and degree of difference between different pores of porous bionic bone implants cannot be quantitatively analyzed, and cannot provide data basis for evaluating tissue regeneration performance

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