Microfluidic PCR Cartridge for Parallel Polynucleotide Detection

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Solution Overview

Problem

Current diagnostic analyses for biological samples are hindered by the need for specialized equipment, high costs, and batch processing, leading to delays and inefficiencies in obtaining diagnostic results.

Innovation Solution

A microfluidic system that includes a receiving bay for a microfluidic cartridge, a heat source for PCR, a detector for nucleotide presence, and a processor to control heating and detection, enabling automated, high-throughput PCR and nucleotide detection within the cartridge.

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 detection accuracyVSAvoidequipment specialization

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The microfluidic cartridge is designed as a universal platform that can perform multiple diagnostic functions (PCR amplification, fluorescence detection, sample processing) in a single integrated device. The system uses standardized components that can handle different sample types and target nucleic acids, eliminating the need for multiple specialized instruments while maintaining diagnostic precision through controlled microfluidic environments and optimized reaction conditions

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Productivity

If batch processing is used for diagnostic analyses, then productivity is improved, but loss of time increases due to waiting for machine availability

Engineering Contradiction:

Improvethroughput of samplesVSAvoidsample processing delay

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The system divides the diagnostic process into independent microfluidic channels within the cartridge, each capable of processing samples simultaneously. The cartridge contains multiple reaction chambers that can be loaded and processed in parallel, allowing continuous throughput without waiting for sequential batch completion. This segmentation enables high productivity while reducing individual sample wait times through concurrent processing

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Samples are prepared and loaded into the microfluidic cartridge in advance, with all reagents and components pre-positioned for immediate processing. The system allows sample loading and system preparation to occur before the actual diagnostic run begins, eliminating idle time and enabling on-demand processing without batch waiting periods

Inventive Principle:

Principle #10Preliminary action

3Ease of operation

If automated microfluidic PCR system is implemented, then ease of operation is improved, but device complexity increases

Engineering Contradiction:

Improveautomation of PCR and detectionVSAvoidintegrated microfluidic system

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The system merges sample preparation, PCR amplification, and fluorescence detection functions into a single integrated microfluidic cartridge. By combining these previously separate operations into one automated platform with unified fluid handling and thermal cycling, the system improves ease of operation through streamlined workflow while managing complexity through modular cartridge design that can be easily exchanged

Inventive Principle:

Principle #5Merging (Combining)

4Productivity

If high-throughput processing is implemented, then productivity is improved, but loss of time for individual samples may increase due to queueing

Engineering Contradiction:

Improvenumber of samples processedVSAvoidindividual sample processing time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The microfluidic cartridge is segmented into multiple independent reaction chambers and fluidic channels that operate in parallel. This segmentation allows the system to process multiple samples simultaneously without queueing delays, as each channel can handle a sample independently. The parallel architecture maintains high productivity while minimizing individual sample processing time by eliminating sequential bottlenecks

Inventive Principle:

Principle #1Segmentation

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 system allows for rapid, automated detection of polynucleotides in multiple samples, reducing processing time and costs, and enabling on-demand diagnostic results without the need for specialized equipment.

Implementation Method 1

at least one heat source thermally coupled to the cartridge and configured to carry out PCR on a microdroplet of polynucleotide-containing sample, in the cartridge

Methodology Applied

Scientific EffectPCR (Polymerase Chain Reaction):

Implementation Method 2

a detector configured to detect presence of one or more polynucleotides in the sample

Methodology Applied

Scientific EffectOptical detection:

Data Source

PatentUS20250075250A1Microfluidic system for amplifying and detecting polynucleotides in parallel

Publication Date: 2025.03.06 HANDYLAB INC

AI summary

The present technology provides for an apparatus for detecting polynucleotides in samples, particularly from biological samples. The technology more particularly relates to microfluidic systems that carry out PCR on nucleotides of interest within microfluidic channels, and detect those nucleotides. The apparatus includes a microfluidic cartridge that is configured to accept a plurality of samples, and which can carry out PCR on each sample individually, or a group of, or all of the plurality of samples simultaneously.