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Publication Number
US-12409308-B2
Publication Date
2025-09-09
Expiration Date
Abstract
An infusion system includes a primary delivery device, a secondary delivery device, an ancillary device, and a manifold. The manifold includes a primary connection port fluidly coupled with the primary delivery device. A delivery connection port in fluid communication with the primary connection port is fluidly coupled with the ancillary device. A secondary connection port fluidly coupled with the secondary delivery device is in fluid communication with the primary connection port. The primary connection port is operable to permit bidirectional flow so that fluid flows from the primary delivery device through the primary connection port and through the delivery connection port to the ancillary device, and from the secondary delivery device through the secondary connection port and through the primary connection port to be received by the primary delivery device.
Core Innovation
The infusion system includes a primary delivery device, a secondary delivery device, and an ancillary device, with a first manifold having a primary connection port, a delivery connection port, and a secondary connection port. The delivery connection port is operable to be fluidly coupled with the ancillary device and to permit unidirectional flow from the primary connection port to the ancillary device. The secondary connection port is operable to be fluidly coupled with the secondary delivery device and to permit unidirectional flow from the secondary delivery device to the primary connection port.
The primary connection port is operable to permit bidirectional flow, enabling fluid to flow from the primary delivery device through the primary connection port and through the delivery connection port to the ancillary device, while also enabling fluid to flow from the secondary delivery device through the secondary connection port and through the primary connection port to be received by the primary delivery device. This supports controlled bidirectional and unidirectional fluid routing while maintaining the sterile ancillary connection.
A second manifold is operable to be fluidly coupled with the secondary port of the first manifold and includes first and second connection ports. The second manifold cascades replenishment from a third delivery device through the second manifold to the secondary connection port of the first manifold and then to the primary delivery device, with unidirectional flow from the third delivery device toward the first connection port and bidirectional flow through the first connection port. The use of check valves and optional in-line air filters is described to prevent backflow and to address air removal.
Claims Coverage
The document’s independent claim covers an infusion system with two delivery devices and an ancillary device connected through a first manifold and a second manifold, using defined unidirectional and bidirectional port operability. It includes a cascade from a third delivery device through a second manifold to a secondary connection and then to a primary delivery device, for controlled fluid routing around an ancillary device.
Unidirectional ancillary delivery via first manifold
A first manifold including a delivery connection port in fluid communication with a primary connection port and operable to be fluidly coupled with the ancillary device, the delivery connection port being operable to permit unidirectional flow from the primary connection port to the ancillary device.
Bidirectional primary port with secondary replenishment
A primary connection port operable to permit bidirectional flow so that fluid is operable to flow from the primary delivery device through the primary connection port and through the delivery connection port to the ancillary device, and from the secondary delivery device through the secondary connection port and through the primary connection port to be received by the primary delivery device.
Unidirectional secondary-to-primary flow through secondary port
A secondary connection port operable to be fluidly coupled with the secondary delivery device, the secondary connection port being in fluid communication with the primary connection port, the secondary connection port being operable to permit unidirectional flow from the secondary delivery device to the primary connection port.
Cascaded replenishment using a second manifold
A second manifold operable to be fluidly coupled with the secondary port of the first manifold, the second manifold including a first connection port operable to be fluidly coupled with the secondary delivery device, a delivery connection port in fluid communication with the first connection port and operable to be fluidly coupled with the secondary connection port of the first manifold, and a second connection port operable to be fluidly coupled with a third delivery device, the second connection port being operable to permit unidirectional flow from the third delivery device to the first connection port.
Bidirectional first connection port in cascaded manifold
The first connection port is operable to permit bidirectional flow so that fluid is operable to flow from the secondary delivery device through the first connection port and through the delivery connection port of the second manifold to the first manifold via the second connection port, and from the third delivery device through the second connection port and through the first connection port to be received by the secondary delivery device.
Overall, the claim coverage centers on manifold-based routing that delivers fluid unidirectionally from a primary delivery device to an ancillary device, while enabling replenishment from a secondary delivery device back into the primary delivery device through bidirectional operability of a primary port. It extends this architecture with a second manifold that cascades replenishment from a third delivery device to the secondary delivery device using a combination of unidirectional and bidirectional port operability.
Stated Advantages
Reduction of contamination risk compared to syringe replacement or tip-to-tip transfer, while maintaining the sterile ancillary connection through controlled fluid routing.
Enables replenishment from a secondary delivery device back into the primary reservoir without breaking the sterile ancillary connection.
Supports cascading replenishment using a second manifold to route replenishment from a third delivery device to a secondary device and then to the primary device.
Check valves are described to prevent backflow and optional in-line filters are described to help eliminate air.
Documented Applications
Infusion system use with an ancillary device that includes an infusion needle set, where controlled fluid routing and replenishment are used to maintain sterile connections.
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