Interfacing Cap for Microfluidic Reagent Transfer
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Solution Overview
Problem
Conventional methods for transferring reagents from storage containers to microfluidic devices often result in leaks and spills due to the puncturing of septums, leading to inefficiencies and contamination.
Innovation Solution
An interfacing cap with a partitioning element, projection fitting, holder element, and puncturing element is designed to securely connect reagent storage vessels to microfluidic devices, ensuring a reliable fluid seal and minimizing leaks by using deformable materials and a puncturing mechanism that forms a seal with the device's conformal recess.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a septum is punctured to transfer reagent from storage vial to microfluidic device, then the reagent can be transferred, but reagent leak and spill occur
Solution Approach 1:
The interfacing cap is divided into multiple functional elements: a partitioning element that segments the internal space, a projection fitting that provides structural support, a holder element that secures the assembly, and a puncturing element that creates the fluid pathway. This segmentation allows each component to perform its specific function while maintaining overall seal integrity during reagent transfer.
Solution Approach 2:
The interfacing cap acts as an intermediary device between the reagent storage vial and the microfluidic device. It includes a puncturing element that pierces the vial septum and a conformal recess that interfaces with the microfluidic device, thereby mediating the reagent transfer process while preventing leaks through its sealing structures.
2Device complexity
If conventional interfacing methods are used, then the structure is simple, but reagent leakage occurs during transfer
Solution Approach 1:
The interfacing cap utilizes a flexible holder element that can deform to conform to the curvature of the reagent storage vial opening and the microfluidic device interface. This flexibility allows the cap to maintain a reliable seal across different vial sizes and shapes while withstanding the pressure differential during reagent transfer without leaking.
3Reliability
If the interfacing cap is designed with multiple components, then seal reliability improves, but manufacturing complexity increases
Solution Approach 1:
Multiple functional components are merged into a single integrated interfacing cap assembly. The partitioning element, projection fitting, holder element, and puncturing element are combined in one structure that can be manufactured as a single piece or pre-assembled unit. This merging reduces the number of separate manufacturing steps while maintaining the reliability benefits of multiple functional elements.
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 a reliable fluid seal, reduces internal dead volume, and can withstand high pressures, facilitating efficient and leak-free transfer of reagents with easy installation and low cost manufacturing.
Implementation Method 1
ensuring a reliable fluid seal and minimizing leaks by using deformable materials and a puncturing mechanism that forms a seal with the device's conformal recess
Data Source
AI summary
An interfacing cap for a reagent storage vessel is provided. The interfacing cap comprises a partitioning element having a structure corresponding to an opening of the reagent storage vessel, a projection fitting disposed on the partitioning element, a holder element, and a puncturing element coupled to the projection fitting.