Monetite Matrix for Bone Regeneration
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Solution Overview
Problem
Current bone regeneration materials, such as hydroxyapatite, have poor reabsorption rates and can interfere with bone remodeling due to their stable crystal structure, leading to prolonged implantation times and potential interference with natural bone processes.
Innovation Solution
Development of a porous three-dimensional matrix made of monetite with structured porosity, which is biocompatible, reabsorbable, and osteoinductive, allowing for cell colonization and vascularization, and is synthesized using a method that includes pore-inducing agents and retarders to create cylindrical macropores for enhanced bone regeneration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hydroxyapatite is used as bone regeneration material, then biocompatibility is improved, but reabsorption rate deteriorates due to stable crystal structure
Solution Approach 1:
The patent changes the crystal structure parameter from stable hydroxyapatite to metastable monetite, which has the same chemical composition (CaHPO4) but different crystalline arrangement. This parameter change enables the material to maintain biocompatibility while achieving controlled reabsorption through its metastable nature, allowing it to transform into hydroxyapatite in vivo at a regulated pace.
Solution Approach 2:
The patent creates a composite system combining monetite crystals with a specific porous matrix structure. The composite nature includes the metastable monetite phase embedded in a controlled porosity framework, which facilitates both cell infiltration and controlled degradation, achieving the dual goal of biocompatibility and appropriate reabsorption timing.
2Stability of the object's composition
If stable crystal structure material is used, then structural integrity is improved, but interference with bone remodeling worsens due to prolonged implantation time
Solution Approach 1:
The patent introduces dynamic behavior to the implant material by using metastable monetite that progressively transforms into stable hydroxyapatite in vivo. This dynamic transformation allows the material to provide initial structural integrity while gradually becoming more resorbable, enabling timely removal and eliminating long-term interference with bone remodeling processes.
Solution Approach 2:
The patent exploits the phase transition from metastable monetite to stable hydroxyapatite as the key mechanism. This phase transition occurs in a controlled manner in vivo, allowing the material to maintain structural integrity during the transition while ultimately being resorbed and replaced by natural bone tissue, thus avoiding prolonged interference with remodeling.
3Reliability
If porous structure is introduced to enhance cell colonization, then osteoinduction is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent deliberately introduces a controlled porous structure into the monetite matrix to enable cell infiltration, nutrient transport, and vascularization. The porosity is optimized to provide sufficient channels for osteoinduction while maintaining adequate mechanical strength through the metastable nature of monetite and the specific pore architecture design.
Solution Approach 2:
The patent applies different properties to different regions of the material - the outer surface maintains higher density for mechanical support, while the internal structure incorporates controlled porosity for cell colonization. This local differentiation allows simultaneous achievement of mechanical strength and osteoinductive properties.
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 monetite matrix facilitates efficient bone regeneration by providing a suitable environment for cell proliferation and vascularization, allowing for timely reabsorption and integration with natural bone, reducing the need for additional surgical interventions and minimizing interference with bone remodeling.
Implementation Method 1
porous three-dimensional matrix of monetite with structured porosity
Implementation Method 2
A material the degradation products of which are easy to eliminate and nontoxic, which is osteoinductive and induces bone tissue formation
Implementation Method 3
The biomaterials which set forming a mineral calcium phosphate are especially interesting in bone regeneration since they resemble the mineral phase of natural bone and are susceptible of bone remodeling and of reabsorption due to their metastable crystal structure
Implementation Method 4
synthesized using a method that includes pore-inducing agents and retarders to create cylindrical macropores
Data Source
Figure 1a~2
Figure 3a~3b
Figure 4a~4d
AI summary
The present invention is comprised within tissue engineering and, specifically, within bone regeneration. The invention relates to a porous three-dimensional matrix of monetite which is biocompatible, has structured porosity and is predefined and reabsorbable, as well as to the method of synthesis capable of producing said material and the applications thereof. These matrices are a perfect base for cell colonization and proliferation, allowing the application thereof in tissue engineering and bone regeneration as a result of their advantageous properties of biocompatibility, reabsorption, osteoinduction, revascularization, etc.