Microfluidic PCR Cartridge With Parallel Sample Processing

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Solution Overview

Problem

Current diagnostic analyses in the medical diagnostics industry are bottlenecked due to the need for specialized and expensive equipment, which is often not available on-demand and requires batch processing, leading to delays and inefficiencies in sample processing and result delivery.

Innovation Solution

A microfluidic cartridge system that enables PCR on multiple biological samples in parallel within microfluidic channels, allowing for independent thermal cycling and detection of nucleotides, thereby facilitating high-throughput diagnostic testing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If specialized equipment is used for diagnostic analyses, then measurement precision is improved, but device complexity and cost increase

Engineering Contradiction:

Improvediagnostic analysis accuracyVSAvoidequipment complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The diagnostic system is segmented into a simple microfluidic cartridge containing multiple independent reaction chambers that can be manufactured using standard microfabrication techniques, eliminating the need for complex specialized equipment while maintaining diagnostic accuracy through integrated sample processing and analysis chambers

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The microfluidic cartridge is designed as a universal platform that can perform multiple diagnostic functions including sample preparation, PCR amplification, and detection within a single device, replacing multiple specialized equipment pieces with one integrated system that maintains measurement precision across different diagnostic applications

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If batch processing is used for sample analyses, then device complexity is reduced, but productivity decreases

Engineering Contradiction:

Improvesample processing throughputVSAvoidprocessing time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The microfluidic cartridge is divided into multiple independent reaction chambers that can process different samples simultaneously in parallel, transforming sequential batch processing into concurrent operations that increase throughput without requiring complex equipment

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple sample processing functions are merged into a single microfluidic cartridge that handles multiple samples concurrently, combining the capabilities of what would traditionally require separate batch processing runs into one integrated device that delivers results faster

Inventive Principle:

Principle #5Merging (Combining)

3Productivity

If on-demand testing is implemented, then productivity is improved, but device complexity increases

Engineering Contradiction:

Improvetesting speedVSAvoidequipment requirements

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The microfluidic cartridge is designed as a self-contained, self-service device that performs all sample processing and analysis functions internally without requiring connection to complex external equipment, enabling on-demand testing while keeping the device simple and standalone

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The cartridge integrates multiple diagnostic functions including sample preparation, thermal cycling, and detection capabilities within a single universal platform, enabling on-demand testing across different applications without requiring specialized equipment for each function

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 microfluidic cartridge system allows for rapid and efficient amplification and detection of nucleotides from multiple samples, reducing processing time and increasing diagnostic throughput, while also enabling on-demand testing and reducing the need for specialized equipment.

Implementation Method 1

A microfluidic cartridge system that enables PCR on multiple biological samples in parallel within microfluidic channels, allowing for independent thermal cycling and detection of nucleotides

Methodology Applied

Scientific EffectThermal cycling:

Implementation Method 2

amplifying polynucleotides contained with the plurality of samples, by application of successive heating and cooling cycles to the PCR reaction chambers

Methodology Applied

Scientific EffectHeating and cooling cycles:

Data Source

PatentUS20250170571A1Microfluidic cartridge and method of making same

Publication Date: 2025.05.29 HANDYLAB INC

AI summary

The present technology provides for a microfluidic substrate configured to carry out PCR on a number of polynucleotide-containing samples in parallel. The substrate can be a single-layer substrate in a microfluidic cartridge. Also provided are a method of making a microfluidic cartridge comprising such a substrate. Still further disclosed are a microfluidic valve suitable for use in isolating a PCR chamber in a microfluidic substrate, and a method of making such a valve.