Piston Thermal Cycling for Portable Molecular Diagnostics
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Solution Overview
Problem
Existing molecular diagnostic devices are complex, expensive, and require additional equipment and technical expertise, making them unsuitable for point-of-care use.
Innovation Solution
A portable device with a piston that cycles between two positions to thermally process a fluid for molecular diagnostics, using heating coils and an actuator to control temperature changes, allowing for real-time detection and amplification of nucleic acids without the need for extensive setup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If typical molecular diagnostic devices are used, then nucleic acid detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple functions (thermal cycling, nucleic acid amplification, and detection) into a single integrated device. The reaction chamber serves as both the thermal cycling vessel and the detection chamber, eliminating the need for separate equipment and reducing overall system complexity while maintaining diagnostic accuracy.
Solution Approach 2:
The device performs multiple functions through a single platform: the same reaction chamber is used for thermal cycling, amplification, and real-time detection. The piston mechanism serves both to cycle temperatures and to facilitate reagent mixing, demonstrating multi-functionality that reduces device complexity.
2Measurement precision
If typical molecular diagnostic devices are used, then detection sensitivity is improved, but portability deteriorates
Solution Approach 1:
By merging the thermal cycling system, amplification chamber, and detection system into a single compact device, the patent achieves portability. The integrated design eliminates the need for separate laboratory equipment, making the device suitable for point-of-care use while maintaining sensitive detection capabilities.
Solution Approach 2:
The reaction chamber is nested within the housing that contains the heating elements and piston mechanism. This nested arrangement maximizes space efficiency and minimizes the overall device footprint, enhancing portability without compromising detection sensitivity.
3Manufacturing precision
If typical molecular diagnostic devices are used, then amplification accuracy is improved, but ease of operation deteriorates
Solution Approach 1:
The device performs self-mixing of reagents through the piston mechanism that automatically cycles between positions during thermal cycling. The system also includes automatic temperature control and real-time detection, reducing the need for manual intervention and simplifying operation while maintaining amplification accuracy.
Solution Approach 2:
The patent replaces manual mechanical operations with automated electronic control systems. The controller automatically manages the heating elements, piston movement, and detection processes, making the device easier to operate while maintaining precise control over amplification conditions.
4Measurement precision
If thermal cycling is used for amplification, then nucleic acid detection sensitivity is improved, but energy consumption increases
Solution Approach 1:
The device uses periodic thermal cycling with defined temperature phases (denaturation at high temperature, annealing at lower temperature, and extension at intermediate temperature). This periodic action enables efficient nucleic acid amplification while allowing energy recovery during the cooling phases, managing overall energy consumption.
Solution Approach 2:
The patent optimizes thermal cycling parameters including temperature profiles, cycle durations, and heating/cooling rates to achieve efficient amplification. By carefully controlling these parameters, the device maintains detection sensitivity while minimizing unnecessary energy consumption during the amplification process.
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
Enables simple, cost-effective, and portable molecular diagnostics at the point of care, facilitating early disease detection and individualized patient care.
Implementation Method 1
the first heat source comprises a first heating coil configured to increase the temperature of the first end of the housing when electric current is applied to the first heating coil
Implementation Method 2
a piston configured to move between a first position and a second position to cycle a fluid between two or more temperatures
Implementation Method 3
the detection module detects a response from the analyte in real time during amplification
Data Source
AI summary
This disclosure relates to apparatus and methods for molecular diagnostics. Certain embodiments include a piston cycled from a first position proximal to a first end of a housing, to a second position proximal to a second end of the housing, and back to the first position proximal to the first end of the housing. In some embodiments, the present disclosure relates to devices, methods, and systems for molecular diagnostics that do not comprise a piston.