Thermal Block for Nucleic Acid Amplification with Dynamic Insertion
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Solution Overview
Problem
Clinical testing facilities face challenges in efficiently processing a high volume of nucleic acid amplification-based tests due to unpredictable demand and the need for rapid processing of rush samples, leading to inefficient resource allocation and strain on equipment and personnel.
Innovation Solution
The development of nucleic acid amplification systems that include thermal blocks for simultaneous amplification and reaction analysis, combined with multi-reaction analysis systems and methods for monitoring multiple concurrent reactions, allowing for efficient processing and analysis of samples through optimized thermal control and optical analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple nucleic acid amplification reactions are performed simultaneously in clinical testing facilities, then productivity increases, but device complexity and resource allocation challenges worsen
Solution Approach 1:
The system divides the thermal block into multiple independent reaction vessel wells (e.g., 24-well configuration), allowing simultaneous independent amplification reactions. Each well can be individually monitored and controlled, enabling high-throughput processing while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The thermal block serves multiple functions: it provides thermal cycling for amplification, optical access for real-time monitoring, and sample containment. The system can handle various reaction types (amplification, melting curve analysis, genotyping) within the same platform, improving productivity without proportionally increasing complexity.
2Reliability
If rush samples are processed out of order in clinical testing facilities, then reliability of urgent testing improves, but loss of time in scheduling and resource allocation worsens
Solution Approach 1:
The system allows pre-preparation of reaction vessels and reagents in the thermal block, enabling rapid insertion of rush samples without disrupting ongoing reactions. Samples can be staged and ready for immediate processing, reducing scheduling delays while maintaining reliable urgent testing capability.
Solution Approach 2:
The thermal cycler allows dynamic insertion and removal of reaction vessels during cycling, enabling flexible scheduling where rush samples can be added to available wells without waiting for complete cycles. This dynamic capability improves urgent testing reliability while minimizing scheduling time loss.
3Measurement precision
If real-time monitoring of multiple concurrent nucleic acid amplification reactions is implemented, then measurement precision improves, but device complexity increases
Solution Approach 1:
The system combines thermal cycling and optical monitoring functions into an integrated thermal block where heating/cooling elements and light sources/detectors are co-located. This merging allows real-time monitoring of multiple reactions simultaneously without requiring separate complex monitoring systems for each well, improving measurement precision while controlling overall device complexity.
Solution Approach 2:
The optical monitoring system uses light transmission through reaction vessel sidewalls to create optical copies or signals of the amplification reactions. Fluorescence or absorbance signals are detected and processed to monitor multiple reactions in parallel, achieving high measurement precision without proportionally increasing physical system complexity.
4Speed
If thermal blocks with optimized thermal control are used for simultaneous amplification, then speed of thermal cycling improves, but manufacturing precision requirements worsen
Solution Approach 1:
The thermal block design incorporates local thermal optimization with copper or aluminum construction that provides high thermal conductivity at critical heat transfer interfaces. Thermal coupling elements are strategically positioned to ensure uniform heat distribution across all wells, enabling fast thermal cycling while tolerating standard manufacturing variations through localized thermal management.
Solution Approach 2:
The system uses programmable thermal parameters (heating rates, cooling rates, hold temperatures) that can be adjusted to optimize cycling speed for different assay requirements. By changing operational parameters rather than requiring precision manufacturing for every scenario, the system achieves high-speed thermal cycling with standard manufacturing tolerances.
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
These systems enable efficient and simultaneous processing of multiple samples, improving resource allocation and reducing the strain on facilities by allowing for rapid thermal cycling and accurate monitoring of nucleic acid amplification reactions, thereby enhancing the capacity to handle both routine and urgent testing demands.
Implementation Method 1
a thermal block, wherein the thermal transfer surface is in thermal contact with a first surface of the thermoelectric cooler unit
Implementation Method 2
a side aperture configured to allow light to pass laterally into the reaction vessel well
Data Source
AI summary
The instant disclosure provides nucleic acid amplification systems and multi-reaction analysis systems useful in the efficient processing of samples, including clinical samples. Integrated systems that include nucleic acid amplification devices functionally combined with multi-reaction analysis systems are also included. Also provided are methods for monitoring multiple concurrent nucleic acid amplification reactions that include the use of devices and systems described herein.