Nucleic Acid Processing System Using Magnetic Bead Capture
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Solution Overview
Problem
Current molecular diagnostic systems are labor-intensive, low throughput, and expensive, with methods being specific to certain sample matrices and nucleic acid types, making them inefficient for robust diagnostic techniques.
Innovation Solution
A system comprising a capture plate with magnetic beads, a molecular diagnostic module with a microfluidic cartridge, heating and cooling subsystem, magnet, valve actuation, and optical subsystem, which processes and detects nucleic acids by binding them to magnetic beads, separating, and analyzing using molecular diagnostic reagents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current molecular diagnostic methods are used, then diagnostic analysis can be performed, but the process is labor-intensive and low throughput
Solution Approach 1:
The system divides the molecular diagnostic process into distinct functional modules: sample processing module, nucleic acid extraction module, amplification module, and detection module. Each module performs a specific function, allowing parallel processing of multiple samples and increasing throughput while reducing manual labor requirements.
Solution Approach 2:
The system incorporates automated sample processing capabilities where the apparatus automatically performs nucleic acid extraction, purification, and amplification without requiring extensive manual intervention. The integrated design allows the system to service itself through automated reagent dispensing and sample handling.
2Productivity
If current molecular diagnostic methods are used, then diagnostic analysis can be performed, but the cost is expensive
Solution Approach 1:
The molecular diagnostic apparatus is designed as a multi-functional system that can perform various diagnostic tests for different nucleic acid targets using the same hardware platform. This universality allows a single expensive device to replace multiple specialized instruments, thereby reducing the overall cost per test while maintaining high efficiency.
Solution Approach 2:
The system combines multiple diagnostic functions including sample processing, nucleic acid extraction, PCR amplification, and detection into a single integrated apparatus. This merging eliminates the need for separate equipment for each function, reducing capital expenditure and operational costs while improving throughput.
3Adaptability or versatility
If current molecular diagnostic methods are used, then analysis can be performed, but the methods are specific to certain sample matrices and nucleic acid types
Solution Approach 1:
The system employs universal reagent kits and processing protocols that can handle various sample matrices including blood, saliva, tissue, and environmental samples. The apparatus is designed to accommodate different nucleic acid types (DNA, RNA, viral genomes) through programmable thermal cycling and flexible detection methods, eliminating the need for separate specialized methods for each sample type.
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 enables efficient processing and detection of nucleic acids, improving throughput and reducing costs by automating sample preparation and analysis, and being applicable across various sample and nucleic acid types.
Implementation Method 1
a capture plate configured to facilitate binding of nucleic acids within a biological sample to a set of magnetic beads
Data Source
AI summary
A system and method for processing and detecting nucleic acids from a set of biological samples, comprising: a capture plate and a capture plate module configured to facilitate binding of nucleic acids within the set of biological samples to magnetic beads; a molecular diagnostic module configured to receive nucleic acids bound to magnetic beads, isolate nucleic acids, and analyze nucleic acids, comprising a cartridge receiving module, a heating/cooling subsystem and a magnet configured to facilitate isolation of nucleic acids, a valve actuation subsystem configured to control fluid flow through a microfluidic cartridge for processing nucleic acids, and an optical subsystem for analysis of nucleic acids; a fluid handling system configured to deliver samples and reagents to components of the system to facilitate molecular diagnostic protocols; and an assay strip configured to combine nucleic acid samples with molecular diagnostic reagents for analysis of nucleic acids.