Inverted Substrate Microchamber Assembly for Evaporation Control
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Solution Overview
Problem
Current methods for tissue sample analysis require cover slipping to prevent evaporation, which can be cumbersome and limit reproducibility, especially during long incubations or high temperature treatments.
Innovation Solution
An assembly that forms a microchamber on an inverted substrate, where the substrate itself acts as an evaporation protector, eliminating the need for cover slipping, and utilizes capillary forces to draw reagents into the chamber for uniform laminar flow and efficient sample treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If cover slipping is used to protect reagents from evaporation, then evaporation is prevented, but the device complexity and ease of operation deteriorate due to cumbersome procedures
Solution Approach 1:
The substrate is inverted so that its back surface directly forms the microchamber ceiling, merging the substrate structure with the microchamber structure. This eliminates the need for separate cover slips while maintaining evaporation protection through the enclosed microchamber design.
Solution Approach 2:
The substrate is inverted from its conventional orientation, with the back surface facing upward to form the microchamber ceiling. This inversion allows the substrate itself to serve as the evaporation barrier, eliminating the need for additional cover slips and simplifying the overall device structure.
2Object-affected harmful factors
If cover slipping is used to protect reagents from evaporation, then evaporation is prevented, but ease of operation worsens due to cumbersome procedures
Solution Approach 1:
The substrate and microchamber structures are merged into a single integrated component. The inverted substrate's back surface directly forms the microchamber ceiling, eliminating the need for separate cover slips and reducing the number of manual assembly steps required.
Solution Approach 2:
By inverting the substrate orientation, the back surface becomes the functional ceiling of the microchamber. This eliminates the need for separate cover slipping operations, making the procedure simpler and more reproducible while maintaining evaporation protection.
3Productivity
If reagent is supplied over the tissue sample, then sample analysis is achieved, but reagent distribution uniformity deteriorates
Solution Approach 1:
Capillary forces are utilized to draw reagent into the microchamber and distribute it uniformly across the sample. The microchamber's enclosed structure and capillary action ensure even reagent flow over the tissue sample, improving distribution uniformity while maintaining analysis productivity.
4Productivity
If the substrate is raised relative to the chamber, then reagent flow into the chamber is enabled, but the mechanism complexity increases
Solution Approach 1:
The system uses capillary forces to automatically draw reagent into the microchamber when the substrate is in the raised position. This self-service mechanism eliminates the need for complex pumps or pressure control systems, enabling reagent flow while keeping the mechanism simple.
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 approach enables reproducible and precise sample staining without the need for cover slips, reducing evaporation risks and improving reaction efficiency through uniform reagent distribution and controlled temperature application.
Implementation Method 1
the chamber and the substrate support structure can be dimensioned such that, when the reagent is supplied to the dispensing cavity, the reagent is drawn into the chamber by way of capillary forces acting on the reagent
Data Source
AI summary
An assembly for forming a microchamber for an inverted substrate is disclosed. The assembly can include a body having a chamber formed therein. A dispensing cavity can be provided to supply a reagent to the chamber. A slide support structure can be configured to support the slide such that the tissue sample faces the chamber when the slide is mounted to the slide support structure. The chamber and the slide support structure can be dimensioned such that, when the reagent is supplied to the dispensing cavity, the reagent is drawn to the chamber by way of capillary forces acting on the reagent.