Microfluidic Organism Observation With Oscillating Reservoir Feeding

The system enables automated self-service operation where the microfluidic chip automatically performs worm loading and feeding functions. The chip structure integrates reservoirs, channels, and chambers that automatically distribute nutrients and substances to worms without requiring manual intervention for each operation, thereby reducing labor intensity while maintaining operational flexibility

The microfluidic chip is designed as a multi-functional integrated device that combines worm loading, nutrient delivery, substance administration, and observation functions in a single platform. This universal design eliminates the need for separate manual operations for each function, reducing both labor intensity and operational complexity simultaneously

The patent merges multiple cultivation functions (loading, feeding, mixing, observation) into a single integrated microfluidic chip structure. By combining these functions that would traditionally require separate robotic arms and shakers into one compact device, the system achieves high automation while significantly reducing mechanical complexity and cost

The invention replaces complex mechanical systems (multiple robotic arms and shakers) with a microfluidic-based system that uses fluid dynamics and integrated micro-channels to achieve the same cultivation functions. This substitution eliminates the need for bulky mechanical components while maintaining automation, thereby reducing device complexity

The microfluidic chip employs a nested structure where reservoirs are integrated within the chip body, and channels are embedded within the chip structure. This nested design allows nutrient delivery and waste drainage to occur within the sealed chip environment, eliminating the need for external movement between reagent supplies and well cassettes, thereby maintaining reliable nutrient management while preventing contamination

The integrated microfluidic channels act as intermediaries that connect nutrient reservoirs directly to worm chambers within the sealed chip structure. This intermediary system enables controlled nutrient delivery and fluid drainage without requiring external handling or movement, thus maintaining culture reliability while eliminating contamination risks associated with external reagent transfer

The microfluidic chip transitions from deep vertical wells to shallow horizontal channels for worm cultivation. This dimensional change allows sufficient culture medium volume to be distributed across a larger horizontal area, providing adequate nutrients while maintaining a shallow depth that enables high-quality imaging without particle interference

The chip design creates different local zones with optimized properties: nutrient reservoirs contain larger volumes of culture medium, while the actual observation chambers have shallow depths and controlled particle environments. This local quality differentiation allows sufficient nutrient supply in reservoirs while maintaining optimal imaging conditions in the worm observation areas