Organomimetic Devices for Dynamic Mechanical Force Application
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Solution Overview
Problem
Current methods for replicating tissue and organ-level functions in vitro fail to effectively reproduce dynamic mechanical forces, limiting their ability to accurately mimic in vivo conditions and replace animal studies in drug development and toxicology evaluations.
Innovation Solution
The development of organomimetic devices, also known as organ-on-a-chip, which utilize microfluidic systems to culture cells and apply mechanical forces to recreate complex tissue and organ structures, allowing for the simulation of functions like breathing, beating, and metabolic processes, and enabling the connection of multiple organs to mimic multi-organ interactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If animal studies are used for drug development and toxicology evaluation, then comprehensive in vivo data can be obtained, but the process becomes expensive, cumbersome, ethically controversial, and less accurate for human applications
Solution Approach 1:
The patent creates simplified copies of human organs and tissues using human-derived cells cultured in microfluidic devices. These organ-on-a-chip models replicate key physiological functions and responses of actual human organs, providing more accurate human-relevant data without requiring complex animal studies. The copying principle allows direct modeling of human biology rather than using animal proxies.
2Reliability
If existing in vitro methods are used to replicate tissue and organ functions, then some organ functions can be studied, but dynamic mechanical forces present in living organs cannot be reproduced
Solution Approach 1:
The patent incorporates dynamic mechanical stimulation capabilities into the microfluidic devices, allowing application of forces such as stretching, compression, and fluid shear stress that mimic the dynamic mechanical environment of living organs. This enables cells to experience physiologically relevant mechanical cues that are essential for maintaining tissue function and response, thereby improving reliability of in vivo condition replication.
3Quantity of substance
If more animals are used for studies to ensure statistical power and comprehensive data, then more complete in vivo information can be gathered, but the cost, time, and ethical concerns increase significantly
Solution Approach 1:
The patent segments the complex animal study system into multiple independent microfluidic organ models that can be cultured and tested separately. Each organ-on-a-chip device can be independently optimized, cultured, and assayed, allowing parallel processing of multiple organ systems. This segmentation enables high-throughput screening and data collection without requiring large numbers of animals, thereby improving productivity and reducing costs.
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
These devices can potentially replace animal studies by providing more accurate, humane, and cost-effective alternatives for drug screening and toxicology studies, closely mimicking human organ functions and interactions.
Implementation Method 1
The membrane separates the first microchannel from the second microchannel, and permits the migration of cells, particulates, chemicals, molecules, fluids and/or gases between the first side to the second side
Data Source
AI summary
An organomimetic device includes a microfluidic device that can be used to culture cells in its microfluidic channels. The organomimetic device can be part of dynamic system that can apply mechanical forces to the cells by modulating the microfluidic device and the flow of fluid through the microfluidic channels. The membrane in the organomimetic device can be modulated mechanically via pneumatic means and/or mechanical means. The organomimetic device can be manufactured by the fabrication of individual components separately, for example, as individual layers that can be subsequently laminated together.