Bubble Column Mixing in Disposable Pharmaceutical Bags

The patent replaces mechanical agitation systems (rotating impellers, moving parts) with a gas-driven bubble column system. Gas is introduced at the bottom of the container to create rising bubbles that induce liquid circulation and mixing through buoyancy-driven flow patterns, eliminating the need for mechanical components while achieving effective mixing.

The invention uses gas flow (pneumatics) to drive the mixing process. A gas source introduces bubbles into the liquid through a sparger or porous plate at the container bottom, creating upward gas flow that generates circulation patterns and turbulent mixing throughout the liquid volume without mechanical contact.

The patent employs single-use disposable containers that are pre-sterilized and sealed. Each container is used once and then discarded, eliminating the need for complex sterilization infrastructure, cleanroom environments, and extensive validation procedures required for reusable systems. This maintains product safety while dramatically reducing manufacturing costs and complexity.

The containers are pre-sterilized and prepared before use, with all necessary ports and connections already in place. This preliminary preparation eliminates the need for on-site sterilization procedures and reduces the time and cost associated with setting up sterile manufacturing environments.

The patent divides the mixing process into independent, self-contained disposable units. Each container is a complete, standalone mixing system that can be prepared and used independently of centralized facilities. This segmentation enables local preparation at point-of-care or distributed locations while maintaining consistent quality through standardized container design and pre-sterilization.

The disposable containers are designed to be self-contained with all necessary components (container, sparger, ports, connections) integrated into a single unit that requires no external infrastructure. Users can prepare and use these containers at any location without requiring centralized mixing facilities, cleanrooms, or complex support equipment.