Multiplexer Microfluidic Device Segmentation for Sample Processing
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Solution Overview
Problem
Current methods for processing model organisms, such as C. elegans, in experimental research face challenges in efficiently and accurately handling multiple sample populations while maintaining segregation to avoid cross-contamination, which limits experimental throughput and accuracy.
Innovation Solution
The development of microfluidic devices equipped with a multiplexer system that includes a main channel, sample reservoirs, inlet channels, and valves to selectively and automatically deliver distinct sample populations to a processing element without mixing, using independently operable valves to manage fluid flow and ensure segregation during processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sample populations are processed manually to maintain segregation, then cross-contamination is avoided, but experimental throughput and processing speed decrease
Solution Approach 1:
The device divides the sample processing system into multiple independent inlet channels, each dedicated to a specific sample population. This segmentation allows simultaneous processing of multiple samples while maintaining physical separation, thus improving throughput without compromising segregation accuracy.
Solution Approach 2:
A common main channel acts as an intermediary that receives samples from multiple inlet channels. The design ensures that samples from different inlet channels remain segregated until they independently enter the main channel, enabling automated high-throughput processing while maintaining separation through the intermediary structure.
2Productivity
If automated processing is implemented to increase throughput, then processing speed improves, but risk of cross-contamination between sample populations increases
Solution Approach 1:
The microfluidic device employs multiple physically separated inlet channels that feed into a common main channel. This segmentation allows automated processing of multiple samples simultaneously while maintaining strict physical separation throughout the flow path, preventing cross-contamination even at high processing speeds.
Solution Approach 2:
The device transitions from two-dimensional planar flow paths to a three-dimensional architecture where multiple inlet channels are positioned at different spatial locations but converge into a shared main channel. This dimensional arrangement enables automated high-throughput processing while maintaining segregation through spatial separation in the vertical and lateral dimensions.
3Measurement precision
If individual processing of each organism is performed to ensure accuracy, then measurement precision improves, but time consumption and complexity increase
Solution Approach 1:
The device segments the sample population into multiple inlet channels, each allowing individual organism processing. This enables parallel individual analysis of multiple samples simultaneously, maintaining measurement precision while reducing total processing time through concurrent operation of multiple channels.
Solution Approach 2:
The common main channel enables continuous flow and processing of samples from multiple inlet channels without interruption. Individual organisms can be processed sequentially or in parallel across different channels, maintaining continuous useful action and eliminating idle time between samples, thus reducing overall processing time while preserving individual analysis accuracy.
Data Source
AI summary
Microfluidic devices for the rapid and automated processing of sample populations are provided. Described are multiplexer microfluidic devices configured to serially deliver a plurality of distinct sample populations to a sample processing element rapidly and automatically, without cross-contaminating the distinct sample populations. Also provided are microfluidic sample processing elements that can be used to rapidly and automatically manipulate and/or interrogate members of a sample population. The microfluidic devices can be used to improve the throughput and quality of experiments involving model organisms, such as C. elegans.