Integrated Microfluidic Lab-on-a-Chip for Point-of-Care Analysis
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Solution Overview
Problem
Current point-of-care devices for fluid analysis are bulky, costly, and complex, with non-disposable electronic components and limited precision in fluid control, making them unsuitable for low-cost, easy-to-use, fully integrated analysis of fluid samples.
Innovation Solution
A compact, low-cost fluid analysis device comprising a micro-fluidic component embedded in a substrate with a CMOS chip lid for sensing, a sealed fluid compartment that opens to mix with the sample, and a sacrificial element for fluid propagation, allowing capillary action and precise control of fluid flow, integrated with a package for encapsulation and easy use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If state of the art point-of-care devices are used for fluid analysis, then analysis capability is provided, but device size becomes large and cost of fabrication becomes high
Solution Approach 1:
The patent merges the micro-fluidic component, sensing device, and fluid compartment into a single integrated lab-on-a-chip device. The micro-fluidic component is embedded in a substrate with a microchip lid that closes the fluidic path, creating a compact fully integrated system that eliminates the need for separate bulky components while maintaining analysis capability
Solution Approach 2:
The sensing device is nested within the micro-fluidic component structure, which itself is embedded in the substrate. The fluid compartment is integrated into the same package, creating a nested hierarchical structure that minimizes overall device volume while preserving all necessary functions
2Reliability
If state of the art point-of-care devices are used for fluid analysis, then analysis function is provided, but cost of fabrication becomes high
Solution Approach 1:
The patent describes a disposable micro-fluidic component that can be mass-produced at low cost using standard microfabrication techniques. The component is designed for single-use analysis, eliminating the need for expensive reusable electronic components while maintaining analytical functionality through integrated sensing elements
Solution Approach 2:
The device uses passive capillary action for fluid transport without requiring active pumps or complex control systems. The microchip lid and embedded sensing device automatically detect and analyze the fluid sample, eliminating the need for expensive external read-out instruments
3Ease of manufacture
If lateral flow test strips are used for fluid analysis, then simple fabrication is achieved, but precise control of fluid flow is not possible
Solution Approach 1:
The patent replaces the passive cellulose-based lateral flow mechanism with an active micro-fluidic system that uses precisely engineered channels and capillary structures. This substitution enables precise control of fluid flow rates and paths while maintaining compatibility with standard microfabrication processes
Solution Approach 2:
The micro-fluidic component features locally optimized channel geometries, surface treatments, and structural features at different positions to control fluid flow characteristics. This localized engineering allows precise flow control in specific regions while maintaining overall fabrication simplicity
4Reliability
If complex devices with multiple components are used for fluid analysis, then analysis functionality is provided, but device complexity increases
Solution Approach 1:
The patent combines multiple functional components (fluidic channels, sensing elements, sample introduction, and analysis chambers) into a single integrated micro-fluidic component. This merging eliminates the need for multiple separate components and their interconnections, significantly reducing device complexity while preserving full analysis functionality
Solution Approach 2:
The micro-fluidic component is designed to perform multiple functions within a single structure: sample introduction, fluid transport, mixing, reaction, and detection. This multi-functionality eliminates the need for separate dedicated components for each function, reducing overall device complexity
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 device provides a cost-effective, easy-to-use, fully integrated solution for fluid analysis with precise control over fluid flow, enabling complex biochemical reactions and accurate point-of-care testing, suitable for disposable use.
Implementation Method 1
a micro-fluidic component for propagating the fluid sample
Data Source
Figure 1
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Figure 5~7
AI summary
A fluid analysis device Presented is a fluid analysis device 1 which comprises a sensing device 100 for analyzing a fluid sample, the sensing device comprising a micro-fluidic component 4 for propagating the fluid sample and a microchip 103 configured for sensing the fluid sample in the micro-fluidic component 4; a sealed fluid compartment 6 containing a further fluid, the compartment 6 being fluid-tight connected to the sensing device 100 and adapted for providing the further fluid to the micro-fluidic component 4 when the sealed fluid compartment 6 is opened; and an inlet 7 for providing the fluid sample to the micro-fluidic component 4. Further, a method for sensing a fluid sample using the fluid analysis device 1 is presented.