Titanium Oxide Scaffolds for Bone Regeneration
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Solution Overview
Problem
Current medical implants, particularly those made of metal oxides, face challenges in achieving both high biocompatibility and mechanical stability, often resulting in adverse reactions or insufficient structural integrity for effective bone regeneration and integration.
Innovation Solution
Development of metal oxide scaffolds comprising titanium oxide with controlled porosity and surface modifications, such as fluoride treatment, to enhance biocompatibility and mechanical strength, allowing for improved osseointegration and bone growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal oxide scaffolds are made highly porous to enable cell infiltration and tissue regeneration, then biocompatibility and osteoconductivity are improved, but mechanical strength and structural stability deteriorate
Solution Approach 1:
The patent employs composite materials combining metal oxides (such as titanium oxide, zirconium oxide, hafnium oxide) with controlled hierarchical pore structures. This composite approach allows the material to simultaneously achieve high porosity (50-90%) for cell infiltration and adequate mechanical strength through the synergistic effect of multiple oxide components and optimized pore architecture at micro and nanoscales.
Solution Approach 2:
The invention utilizes porous metal oxide materials with specifically engineered pore structures including macro pores (10-1000 μm) for cell migration and micro/nano pores (0.1-10 μm) for increased surface area and osteoconductivity. The porous structure is optimized to balance void space for tissue regeneration with remaining solid framework for mechanical support.
2Reliability
If the scaffold surface is modified to enhance bone cell attachment and osseointegration, then biocompatibility is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies local quality modifications to the scaffold surface through controlled pore size variations and surface roughness optimization. Different regions of the scaffold have optimized pore dimensions and surface characteristics tailored to specific functional requirements - larger pores for cell infiltration, smaller pores for osteoconductivity, with surface roughness specifically engineered to enhance bone cell attachment without requiring complex multi-step surface treatments.
Solution Approach 2:
The invention achieves enhanced osseointegration by optimizing physical parameters of the metal oxide scaffold including pore size distribution (10-1000 μm macro pores, 0.1-10 μm micro pores), porosity (50-90%), and surface area to volume ratio. These parameter optimizations are integrated into the manufacturing process rather than requiring separate complex surface modification steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The titanium oxide scaffolds demonstrate increased bone formation and quality, reduced adverse reactions, and provide mechanical stability for tissue regeneration, addressing the limitations of existing implants by offering a stable and biocompatible framework for bone growth.
Implementation Method 1
surface modifications, such as fluoride treatment, to enhance biocompatibility and mechanical strength
Data Source
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AI summary
The present invention relates to a metal oxid scaffold comprising titanium oxide. The scaffolds of the invention are useful for implantation into a subject for tissue regeneration and for providing a framework for cell growth and stabilization to the regenerating tissue. The invention also relates to methods for producing such metal oxide scaffolds and their uses.