Fluidics Device Membranous Diaphragm Bubble Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current microfluidic systems face challenges with inefficient mixing, gaseous bubble formation, and restricted flow due to laminar flow limitations, which hinder the effective purification, detection, and measurement of analytes in liquid samples.
Innovation Solution
The development of fluidics devices with a membranous diaphragm and check valves that alternate opening and closing to facilitate fluid recirculation and bubble removal, allowing for efficient mixing and diffusion within a multilayer assembly, and the use of a pump to manage fluid flow through channels with specific dimensions for optimal analyte processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If laminar flow is used in microfluidic channels, then flow control is simplified, but mixing efficiency deteriorates and bubble formation increases
Solution Approach 1:
The patent introduces dynamic flow control mechanisms that allow the system to switch between laminar flow (for controlled transport) and turbulent flow conditions (for efficient mixing). The channel geometry includes varying cross-sections and obstacles that dynamically alter flow patterns based on operational requirements, resolving the contradiction between simplified flow control and mixing efficiency.
Solution Approach 2:
The patent employs periodic flow reversal and pulsatile flow patterns to enhance mixing efficiency while maintaining overall flow control. By periodically reversing flow direction or introducing flow pulses, the system achieves thorough mixing without requiring continuously complex control mechanisms, thus resolving the contradiction between ease of operation and productivity.
2Stress or pressure
If laminar flow is used in microfluidic channels, then flow resistance is reduced, but bubble obstruction increases
Solution Approach 1:
The patent incorporates dedicated bubble removal chambers and venting pathways that extract bubbles from the fluid stream. These specialized regions allow bubbles to coalesce and be removed from the system, preventing obstruction in the main flow channels while maintaining low flow resistance, thus resolving the contradiction between pressure and reliability.
Solution Approach 2:
The patent introduces hydrophobic coating layers and surface treatments as intermediaries between the fluid and channel walls. These coatings reduce adhesion of bubbles to channel surfaces and facilitate bubble release, thereby preventing obstruction without increasing flow resistance, resolving the contradiction between pressure and reliability.
3Adaptability or versatility
If microfabrication techniques are used, then device integration is improved, but manufacturing complexity increases
Solution Approach 1:
The patent divides the microfluidic device into modular segments that can be independently fabricated and then assembled. Each module contains specific functions (flow control, mixing, detection) and can be manufactured using standard techniques, reducing overall manufacturing complexity while maintaining high device integration through precise inter-module connections.
Solution Approach 2:
The patent designs universal component blocks that can serve multiple functions. For example, certain channel structures serve both as flow paths and as mixing elements, while valve mechanisms can control multiple channels. This multi-functionality reduces the total number of components needed, simplifying manufacturing while maintaining versatile device integration.
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 enables efficient mixing, minimizes bubble obstruction, and enhances the detection of analytes by ensuring facilitated diffusion and operation on components within the fluid sample, improving the overall performance of microfluidic systems in diagnostic and analytical applications.
Implementation Method 1
The plurality of check valves alternate opening and closing in coordinated reciprocal fashion according to alternating positive and negative forces exerted on the diaphragm
Implementation Method 2
The first side is for coupling to a pump
Implementation Method 3
allowing for facilitated diffusion and performance of the operation on the one or more components in said fluid sample
Implementation Method 4
allowing for efficient mixing and diffusion within a multilayer assembly
Data Source
AI summary
The invention relates to fluidics as used in medical and diagnostic equipment and relates further to means for purifying, abstracting, filtering, detecting and/or measuring analytes in liquid samples.