Microfluidic Chip Holder Latching Mechanism for Controlled Release
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Solution Overview
Problem
Existing microfluidic chip holders pose a risk of damaging the chips or disturbing the reagents or processes within when removing them, due to inadequate handling mechanisms.
Innovation Solution
The development of microfluidic chip holders with a receptacle and a latching mechanism that includes a lever or wedge, allowing for controlled release of the chip by applying lateral or annular pressure to the latch, which raises the chip and enables easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple holder structure is used, then the device complexity is reduced, but the chip may be damaged or disturbed during removal
Solution Approach 1:
The holder is segmented into distinct functional components: a receptacle for holding the chip, a latching mechanism for secure attachment, and a lever system for controlled release. This segmentation allows each component to perform its specific function optimally while maintaining overall system reliability during chip removal
Solution Approach 2:
The latching mechanism acts as an intermediary between the chip and the external environment. It provides a controlled interface that secures the chip during transport and allows deliberate, controlled removal, preventing accidental damage or disturbance to the chip and its contents
2Reliability
If a secure latching mechanism is added, then the chip holding reliability is improved, but the device complexity increases
Solution Approach 1:
The latching mechanism is designed to be self-actuating through the lever system. When the lever is actuated, it automatically withdraws the latch from the chip's edge, and the spring returns the lever to its original position, re-engaging the latch. This self-service design provides secure holding without requiring complex external actuation systems
Solution Approach 2:
The latching mechanism utilizes elastic deformation of the spring and flexing of the lever to transform small lateral movements into the withdrawal and reengagement of the latch. This parameter change approach allows a simple lever motion to control the complex latching action, maintaining reliability while minimizing operational complexity
3Ease of operation
If lateral pressure is applied to the latch, then the chip can be released and raised, but friction may resist the motion
Solution Approach 1:
The latch includes a projection that moves within a groove, transforming lateral pressure into lateral movement along the groove's path. This dimensional approach allows the latch to slide smoothly within the groove while the lever provides the mechanical advantage needed to overcome friction and raise the chip edge
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 solution ensures the secure holding and controlled release of microfluidic chips, minimizing the risk of damage and disturbance to the chip's contents, thereby facilitating safe and efficient handling.
Implementation Method 1
the latching mechanism includes a spring, and the pressing applies stress to the spring to withdraw the latch
Implementation Method 2
the latching mechanism includes a fulcrum between the effort and resistance sides of the lever, and the pressing includes causing the lever to pivot on the fulcrum
Implementation Method 3
the lever is a compound lever including two or more mechanically coupled pivot points, and the pressing includes transferring lateral or annular pressure from the latch to the effort side of the lever through the one or more mechanically coupled pivot points
Implementation Method 4
the latch includes one or more features to increase friction between a top portion of the latch and a finger or thumb when lateral or annular pressure is applied
Data Source
AI summary
The invention provides microfluidic chip holders, systems containing them, and methods of microfluidic chip removal therefrom that allow easy, reproducible release and removal of microfluidic chips from the holders. Holders of the invention include latching mechanisms that hold a chip securely in position when locked and eject the chip when unlocked, allowing easier grasping of the chip and reducing the likelihood that the fluidic contents of the chip are disturbed during removal.