Peritoneal dialysis fluid preparation and/or treatment devices methods and systems
Peritoneal dialysis admixing and/or treatment devices, methods, and systems are disclosed. The systems, methods, and devices provide high-level guarantees of sterility and employs relatively inexpensive disposable components to provide pumping. Disclosed systems, methods, and devices and features thereof are adapted for point of use generation of medicament. In particular admixing systems that employ independently-replaceable long term concentrate are disclosed. Features are directed to assurance of sterility and accurate admixing of water and concentrate to generate ready-to-use medicaments and other benefits.
1. A system for preparing dialysis treatment fluid, comprising:
an integrally interconnected fluid circuit including a mixing container pre-connected to the fluid circuit and configured to perform fluid mixing to prepare the dialysis treatment fluid, the mixing container and fluid circuit being sealed from an external environment, and the mixing container having a single mixing container line;
a flow diverter disposed in the mixing container and connected to the single mixing container line, the flow diverter being configured to cause ingoing fluid to enter an interior of the mixing container at a first location in the interior of the mixing container that is different from a second location in the interior of the mixing container from which outgoing flow exits the interior of the mixing container;
the fluid circuit including a valve network having junctions and valve portions that mechanically interface with valve actuators to define selectable flow paths in the valve network;
the valve network further including a pumping portion and a fluid inlet line with a connector for connection to a fluid source, the fluid inlet line being fluidly connected to the mixing container by the pumping portion;
the valve network being fluidly connecting the mixing container to the fluid inlet line; and
the fluid inlet line having at least one in-line sterilizing filter including either one of a pair of spaced sterilizing filters and a testable sterilizing filter with an air-line, wherein
the flow diverter includes
an elongated tube that conveys ingoing fluid to the interior of the mixing container through a first opening at a distal end of the elongated tube,
a second opening at a proximal end of the elongated tube; and
a check valve that prevents fluid flow out of the second opening but permits the fluid flow into the elongated tube through the second opening.
2. The system of claim 1 , further comprising a peritoneal dialysis admixer/cycler with a controller that controls a pumping actuator in engagement with the pumping portion, the controller controlling the pumping actuator to mix fluid in said mixing container by intermittently exchanging the fluid with a pump or an accumulator connected to the valve network.