Bioreactor System for In Vitro Bone Tissue Engineering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for forming new bone tissue in vitro using demineralized bone matrix (DBM) are limited in efficiency and control, as they rely on animal models and lack precise control over cellular differentiation and matrix formation for clinical applications.
Innovation Solution
A bioreactor system is used to cultivate bone-forming cells with ground demineralized bone, where nutrient solutions are flowed through to promote cell proliferation and differentiation, and additional components like collagen or growth factors can be added to create a bone-like matrix, with mechanical and electrical stimuli applied to simulate implant conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If demineralized bone matrix (DBM) is used to form new bone tissue in vitro, then bone formation can be achieved through cellular infiltration and differentiation, but the process lacks efficiency and precise control over cellular differentiation and matrix formation
Solution Approach 1:
The patent applies parameter changes by systematically varying culture conditions including nutrient composition, oxygen tension, mechanical loading parameters, and growth factor concentrations to precisely control cellular differentiation and matrix formation. This enables optimization of both precision and efficiency in bone tissue engineering.
Solution Approach 2:
The patent implements feedback control through monitoring cellular responses and matrix formation progress, then adjusting culture parameters accordingly. This closed-loop approach allows precise control over differentiation while maintaining high productivity by preventing wasted culture time and resources.
2Reliability
If animal models are used to assess DBM bone formation, then in vivo bone formation can be evaluated, but the results cannot be directly translated to clinical applications
Solution Approach 1:
The patent uses an in vitro bioreactor system as an intermediary between animal model studies and clinical applications. This controlled environment allows reliable assessment of bone formation while producing human-relevant data that can be directly translated to clinical settings, bridging the gap between preclinical and clinical research.
Solution Approach 2:
The patent creates a controlled copy of the in vivo bone formation environment using bioreactors that simulate physiological conditions. This allows reliable evaluation of DBM performance without requiring animal models, producing results that are directly applicable to human clinical applications.
3Manufacturing precision
If ground demineralized bone and bone-forming cells are cultured in a bioreactor with nutrient solution flow, then transplantable bone tissue can be formed, but the system complexity increases
Solution Approach 1:
The patent designs the bioreactor system to perform multiple functions including nutrient delivery, waste removal, mechanical loading application, and parameter monitoring within a single integrated platform. This multi-functionality reduces overall system complexity while maintaining precise control over bone tissue formation.
Solution Approach 2:
The patent uses porous scaffolds and permeable membranes in the bioreactor system to enable nutrient and waste transport without requiring complex pumping systems. The porous structures passively facilitate mass transfer through concentration gradients, simplifying the overall system design while maintaining precise control over tissue formation.
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
This method enables the formation of transplantable bone or bone-like tissue with controlled properties, suitable for clinical use, by promoting cellular differentiation and matrix formation under controlled conditions, enhancing the efficiency and applicability of bone tissue engineering.
Implementation Method 1
causing a flow of nutrient solutions into, through, and out of the bioreactor
Implementation Method 2
mechanical and electrical stimuli applied to simulate implant conditions
Data Source
AI summary
The present invention is directed to a device for the growth of new bone or bone-like tissue under in vitro cell culture conditions.