Demineralized Bone Matrix Composition With Size-Optimized Processing
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Solution Overview
Problem
Existing demineralization processes for demineralized bone matrix (DBM) result in under- or over-demineralization, leading to reduced osteoinductive potential and growth factor content, particularly in smaller and larger particle sizes, limiting the effectiveness of DBM products.
Innovation Solution
A size-optimized demineralization process that separates bone particles into narrow size ranges and applies customized demineralization parameters, including varying acid types, concentrations, and times, to optimize demineralization for each size range, minimizing over- and under-demineralization and retaining growth factors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single demineralization process is applied to all bone particles, then the process is simple and fast, but smaller and larger particles suffer from under- or over-demineralization reducing osteoinductive potential
Solution Approach 1:
The bone particles are segmented into different size categories (small, medium, large particles) and each category is subjected to customized demineralization parameters. This segmentation allows each particle size to receive the precise treatment it needs, preventing both under- and over-demineralization while maintaining high productivity.
Solution Approach 2:
Different demineralization conditions are applied locally to different particle size groups. Smaller particles receive shorter treatment times and lower acid concentrations, while larger particles receive longer times and higher concentrations. This local quality approach ensures optimal demineralization for each group without compromising others.
2Reliability
If strong acid and long demineralization time are used to ensure complete mineral removal, then demineralization is thorough, but growth factors are degraded and lost
Solution Approach 1:
The demineralization parameters (acid type, concentration, temperature, time) are changed according to particle size. Smaller particles use milder conditions with shorter times to prevent growth factor degradation, while larger particles use stronger conditions to ensure complete mineral removal. This parameter optimization maintains reliability without substance loss.
Solution Approach 2:
Instead of applying maximum demineralization force to all particles, the process applies partial action (milder treatment) to smaller particles that require less, and excessive action (stronger treatment) only to larger particles that need it. This prevents unnecessary growth factor degradation while achieving complete demineralization where needed.
3Productivity
If demineralization is accelerated to improve processing speed, then productivity increases, but osteoinductive potential and biological activity are reduced
Solution Approach 1:
The particle population is segmented and each segment is processed at its optimal speed. Smaller particles are processed quickly with mild conditions, while larger particles receive more extended treatment. This segmentation allows overall high productivity while maintaining osteoinductive potential through optimized individual processing.
Solution Approach 2:
The demineralization process is made dynamic by adjusting parameters in real-time based on particle size. The system adapts acid concentration, temperature, and time according to the specific particle group being treated, enabling accelerated processing for smaller particles while maintaining biological activity through controlled, size-appropriate treatment for larger particles.
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 process enhances the osteoinductivity and biological activity of DBM by maintaining high growth factor content across various particle sizes, enabling the use of smaller particles and improving the overall effectiveness of DBM products.
Implementation Method 1
the demineralization process used to create the DBM in these products has a number of shortcomings... bone is subjected to an acid demineralization process to dissolve and remove the bone mineral
Data Source
AI summary
An enhanced osteoinductive composition is prepared by subjecting particulate bone to a demineralization process that is optimized based on the particle size. In broad particle size ranges, ground bone is separated by particle size and each size range is subjected to independent demineralization conditions that maintain high levels of endogenous growth factors found in bone. Following demineralization, the size ranges are recombined to create an enhanced osteoinductive composition. In narrow particle size ranges, bone is milled to achieve a predetermined size, and the demineralization process is adjusted to this size range. Size-optimized demineralization is also used to create enhanced demineralized bone matrix particles in the size range of <125 μm. Enhanced osteoinductive compositions using size-optimized demineralization bone matrix and protein isolation and/or bone gelatin creation techniques are disclosed. Tissue repair compositions using the enhanced osteoinductive particles are also disclosed.