Abstract:
The disclosed subject matter includes a structure and method for making a dual-lumen needle from single lumen needles to take advantage of the much higher economies of scale. Variations include two needles joined by a flow junction and one needle and a single cannula joined by a flow junction. In addition disclosed are methods of using a dual-lumen needle in a two needle access for blood treatment is disclosed in which at least venous flow is provided through a dual-lumen needle with arterial flow just sufficient to provide air infiltration detection in the event of withdrawal of the dual-lumen needle.
Abstract:
The disclosed subject matter relates to extracorporeal blood processing or other processing of fluids. Volumetric fluid balance, a required element of many such processes, may be achieved with multiple pumps or other proportioning or balancing devices which are to some extent independent of each other. This need may arise in treatments that involve multiple fluids. Safe and secure mechanisms to ensure fluid balance in such systems are described.
Abstract:
Methods, systems, and devices are disclosed, embodiments of which provide single pass dialysis to remove water and uremic toxins is performed simultaneously with the albumin dialysis therapy by passing the albumin solution through a dialysis filter which dialyses it before the solution is returned to the cycler. In embodiments, the single pass dialysis stage is upstream of the albumin filtering stage.