Collapsible Buffer Chamber for Slab Gel Electrophoresis Cassette
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Solution Overview
Problem
Pre-cast gel cassettes with integrated upper buffer chambers are cumbersome for storage and stacking due to the added volume of the chamber, which is a challenge in space-constrained laboratory environments.
Innovation Solution
A collapsible upper buffer chamber design that can be reduced in depth for packaging and storage, featuring accordion-style pleats or a single fold, allowing it to expand when needed for use, maintaining full functionality while minimizing space consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an integrated upper buffer chamber is added to the cassette, then the functionality for buffer solution contact is improved, but the storage space requirement increases
Solution Approach 1:
The buffer chamber is designed with collapsible side walls that allow it to dynamically change volume. During operation, the chamber expands to provide full buffer solution contact with the gel edge. During storage, the chamber collapses to minimize the cassette profile, enabling vertical stacking and reducing refrigerator space requirements.
Solution Approach 2:
The collapsible chamber design allows the buffer chamber to nest within the cassette profile when collapsed, similar to how nested dolls occupy minimal space. The side walls fold inward to create a compact configuration that fits within the standard cassette dimensions, eliminating the need for additional storage space.
2Ease of operation
If the cassette is stored horizontally in stacks, then storage organization is improved, but the integrated buffer chamber makes stacking difficult
Solution Approach 1:
The collapsible side walls enable the cassette to transition between expanded and collapsed states. For horizontal stacking, the chamber is collapsed to create a flat, compact profile that stacks efficiently with other cassettes. When ready for use, the chamber is expanded by filling with buffer solution, which pushes the flexible walls outward to the operational configuration.
3Volume of stationary object
If the reservoir is made collapsible with folds or pleats, then the storage volume is reduced, but the structural complexity increases
Solution Approach 1:
The reservoir side walls are constructed from flexible materials that can be folded or pleated without compromising structural integrity. The flexible construction allows the walls to collapse inward for compact storage while maintaining the ability to expand to the full operational volume when buffer solution is added. The flexibility of the material compensates for the added structural complexity of the folded design.
Data Source
AI summary
A slab gel electrophoresis cassette with an integrated upper buffer chamber is constructed such that the integrated chamber is collapsible to allow the cassette to assume a reduced thickness for purposes of stacking during storage and shipping.