Magnetic Compression for Thermal Coupling in Rotating PCR Devices
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Solution Overview
Problem
Existing rotating sample processing devices face challenges in achieving efficient thermal coupling and precise temperature control, particularly in systems that require rapid thermal transitions for genetic amplification and nucleic acid manipulation techniques like PCR, due to variations in temperature sensitivity across multiple samples.
Innovation Solution
The system employs a rotating base plate with a thermal structure and a cover that uses magnetic compression, a shaped transfer surface, or a resiliently mounted thermal structure to enhance thermal coupling between the sample processing device and the thermal structure, ensuring efficient heat transfer and uniform temperature control during rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a rotating sample processing device is used to process multiple samples simultaneously, then productivity is improved, but thermal coupling efficiency deteriorates due to variations in temperature sensitivity and contact consistency
Solution Approach 1:
The thermal structure is mounted resiliently on the base plate, allowing it to dynamically adjust its position and maintain optimal contact with the rotating sample processing device. This dynamic mounting ensures consistent thermal coupling throughout the rotation cycle, resolving the contradiction between high-speed processing and reliable thermal transfer.
Solution Approach 2:
The system changes the physical state of the thermal structure from rigid to resiliently mounted, enabling it to adapt to variations in contact pressure and geometry during rotation. This parameter change allows the thermal structure to maintain effective thermal coupling while supporting high productivity.
2Reliability
If magnetic compression is used to force the sample processing device towards the thermal structure, then thermal coupling efficiency is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical compression mechanisms with a magnetic compression system. Magnets embedded in the base plate and cover generate the necessary compressive force to maintain thermal contact, eliminating the need for mechanical linkages, springs, or actuators. This substitution reduces device complexity while improving thermal coupling efficiency.
Solution Approach 2:
The magnetic compression system is self-regulating and requires no external control mechanisms. The magnetic force automatically adjusts to maintain optimal contact pressure between the sample processing device and thermal structure throughout the rotation cycle, providing self-service thermal coupling without additional complexity.
3Reliability
If a resiliently mounted thermal structure is used, then thermal coupling efficiency is improved through better contact, but manufacturing precision requirements increase
Solution Approach 1:
The resilient mounting of the thermal structure provides built-in compensation for manufacturing tolerances and alignment variations. The resilient elements act as a cushioning mechanism that absorbs misalignment errors before they affect thermal coupling, reducing the stringency of manufacturing precision requirements while maintaining reliable thermal contact.
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
This configuration improves thermal coupling efficiency, allowing for precise and rapid thermal processing of multiple samples simultaneously, enhancing the accuracy and speed of genetic amplification and nucleic acid manipulation techniques.
Implementation Method 1
the cover and base plate may preferably include magnetic elements that, through magnetic attraction, draw the cover towards the base plate
Implementation Method 2
the sample processing device is forced into contact with a thermal structure on the base plate
Data Source
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AI summary
Sample processing systems and methods of using those systems for processing sample materials located in sample processing devices are disclosed. The sample processing systems include a rotating base plate on which the sample processing devices are located during operation of the systems. The systems also include a cover and compression structure designed to force a sample processing device towards the base plate. The preferred result is that the sample processing device is forced into contact with a thermal structure on the base plate. The systems and methods of the present invention may include one or more of the following features to enhance thermal coupling between the thermal structure and the sample processing device: a shaped transfer surface, magnetic compression structure, and floating or resiliently mounted thermal structure. The methods may preferably involve deformation of a portion of a sample processing device to conform to a shaped transfer surface.