Microfluidic Device Monodisperse Droplet Production
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Solution Overview
Problem
Existing microfluidic devices for producing double emulsion droplets face challenges such as complex and time-consuming operations, risk of contamination, sample loss, and instability due to complex tubing systems, leading to polydisperse droplet formation.
Innovation Solution
A microfluidic device with a well section and microfluidic section, featuring a network of supply, transfer, and collection conduits with specific affinities for water, and a pressure distribution structure to produce monodisperse double emulsion droplets, reducing the need for complex connections and minimizing contamination risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If complex tubing systems are used to connect microfluidic chips and fluid reservoirs, then fluid delivery is enabled, but device complexity increases and sample loss occurs
Solution Approach 1:
The patent integrates fluid reservoirs directly into the microfluidic chip structure, eliminating the need for external tubing connections. The reservoirs are formed as integral parts of the chip using the same molding process, creating a unified device that combines storage and fluid delivery functions without requiring separate tubing components.
Solution Approach 2:
The microfluidic channels are formed as narrow grooves within the walls of the fluid reservoirs themselves. This nested structure allows the fluid delivery pathways to be embedded within the reservoir structure, eliminating the need for external tubing while maintaining fluid delivery functionality.
2Ease of operation
If multiple connectors and tubing are used to assemble microfluidic systems, then fluid communication between components is achieved, but risk of contamination increases
Solution Approach 1:
By integrating reservoirs and channels into a single molded piece, the patent eliminates multiple connection interfaces between separate components. The fluid pathway is continuous within the molded structure, removing potential contamination points at connector interfaces.
3Ease of operation
If complex tubing systems are used for connecting microfluidic components, then fluid delivery is enabled, but sample loss occurs
Solution Approach 1:
The integration of reservoirs and channels into a single molded component eliminates sample loss that would occur at tubing connections and interfaces. The continuous molded structure prevents sample adhesion to external tubing surfaces and eliminates dead volumes at connection points.
4Adaptability or versatility
If multiple separate components are assembled using tubing, then system functionality is achieved, but operation time increases
Solution Approach 1:
The patent combines multiple functional components (reservoirs, channels, junctions) into a single molded piece, eliminating the time required for assembly of separate components. The device is ready for immediate use without requiring connection of tubing or alignment of multiple parts.
5Ease of operation
If complex tubing systems are used to connect microfluidic chips, then fluid delivery is enabled, but stability decreases leading to polydisperse droplets
Solution Approach 1:
The integrated molded structure provides rigid, precise definition of fluid pathways without the flexibility and alignment variations inherent in tubing systems. This structural stability ensures consistent fluid flow and droplet formation, producing monodisperse droplets with uniform size and composition.
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 device enables simplified and efficient production of monodisperse double emulsion droplets, reducing reagent use and sample loss, while ensuring stability and uniformity, facilitating parallel processing and minimizing contamination risks.
Implementation Method 1
The transfer conduit comprises a first transfer conduit part having a first affinity for water. The collection conduit comprises a first collection conduit part having a second affinity for water being different from the first affinity for water.
Implementation Method 2
The first transfer conduit part having a first affinity for water; the first collection conduit part having a second affinity for water being different from the first affinity for water
Data Source
AI summary
The present invention relates to a microfluidic device, a method for manufacturing a microfluidic device, and a method for provision of double emulsion droplets using a microfluidic device. Furthermore, the present invention relates to an assembly configured to supply pressure to the microfluidic device for provision of double emulsion droplets. Furthermore, the present invention relates to a kit comprising a plurality of microfluidic devices and a plurality of fluids configured for use with the microfluidic device for provision of double emulsion droplets. The microfluidic device comprises a transfer conduit comprising a first transfer conduit part having a first affinity for water; and a collection conduit comprising a first collection conduit part having a second affinity for water being different from the first affinity for water. A well section and a microfluidic section of the microfluidic device are fixedly connected to each other.