Capillary Conduction Sleeve for Uniform PCR Heating
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Solution Overview
Problem
Existing nucleic acid amplification reaction containers suffer from uneven heating due to mismatched grooves in heater blocks, leading to reduced reaction rates, and existing solutions like conduction sleeves with metallic layers can create thermal shunts, minimizing thermal gradients but are not universally effective.
Innovation Solution
A capillary container with a conduction sleeve that tightly surrounds the capillary for even heating, using a metal conduction sleeve to absorb heat from a heater and conduct it evenly to the capillary, ensuring consistent temperature distribution for efficient nucleic acid amplification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heater block with groove is used to heat the container, then the container can be heated, but the groove does not match with the container causing protrusions and indentations that prevent even heat conduction
Solution Approach 1:
A conduction sleeve made of thermally conductive material is introduced as an intermediary between the heater block and the capillary container. The sleeve has a smooth inner surface that fully contacts the container, while its outer surface matches the heater groove, eliminating the mismatch problem and ensuring uniform heat conduction throughout the container.
Solution Approach 2:
The heating system is divided into three separate components: the heater block, the conduction sleeve, and the capillary container. This segmentation allows each component to be optimized independently - the heater provides heat, the sleeve ensures uniform distribution, and the container holds the reaction mixture, resolving the interface mismatch issue.
2Temperature
If a conduction sleeve with metallic layer is used to surround the capillary, then heat conduction is improved, but thermal shunts are created that minimize thermal gradients
Solution Approach 1:
The conduction sleeve is designed with differentiated properties: the inner surface has high thermal conductivity to ensure uniform heat distribution to the capillary, while the outer surface is configured to match the heater groove geometry. This local quality differentiation allows the sleeve to conduct heat evenly without creating harmful thermal shunts.
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 solution provides even heating to the capillary, enhancing the nucleic acid amplification reaction rate by eliminating thermal gradients and ensuring consistent temperature control, thus improving the efficiency of the PCR process.
Implementation Method 1
a conduction sleeve tightly surrounds the capillary for heating the capillary evenly
Implementation Method 2
The solution convection in the container takes place because of the density difference of the solution at the two ends of the container, wherein the density difference is caused by the temperature difference between the two ends
Data Source
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AI summary
The present invention provides a container for a nucleic acid amplification reaction, comprising a capillary (100) and a heat conduction sleeve (200). The heat conduction sleeve (200) is tightly fitted on the outer side of the capillary (100) for heating the capillary (100) evenly when heat is transferred to the heat conduction sleeve (200), so that the capillary (100) is heated evenly. In this way, the speed of the nucleic acid amplification reaction is increased.