Fluid handling systems and methods
AssigneeB. Braun Medical Inc.
InventorKAI-UWE RITTER
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Abstract
A dialysis system with post dialysis aseptic blood return including a fluid source, a dialyzer, a pump, a venous line, an arterial line, a bridge line coupled between the venous line and the arterial line, and a fluid source line coupled between the fluid source and a fluid port of the arterial line downstream for the bridge line. Aseptic blood return after dialysis is performed by blocking the arterial line between the bridge line and the fluid port, unblocking the bridge line, unblocking the fluid source line, and operating the pump in a forward direction to produce fluid flow from the fluid source, through the dialyzer, and through the bridge line to force venous blood in the venous line toward the patient venous access and arterial blood in the arterial line toward the patient arterial access.
Claims20
A dialysis system comprising:
- a fluid source;
- a dialyzer having a venous port and an arterial port;
- a pump configured to engage tubing lines;
- a venous line fluidly coupled to the venous port of the dialyzer,
- an arterial line engaging the pump and fluidly coupled to the arterial port of the dialyzer on a first engagement side of the pump;
- a bridge line coupled between the venous line and the arterial line on a second engagement side of the pump;
- and
- a fluid source line coupled between the fluid source and a fluid port of the arterial line on the second engagement side of the pump between the bridge line and the pump.
A fluid management method for use on a blood flow side of a dialysis system, the dialysis system comprising a fluid source, a dialyzer, a pump, a venous line fluidly coupled to a venous port of the dialyzer, an arterial line engaging the pump and fluidly coupled to an arterial port of the dialyzer on a first engagement side of the pump, a bridge line coupled between the venous line and the arterial line on a second engagement side of the pump, and a fluid source line coupled between the fluid source and a fluid port of the arterial line on the second engagement side of the pump between the bridge line and the pump, the method comprising:
- configuring the dialysis system for aseptic blood return to a patient, the patient coupled to a patient venous access and a patient arterial access, by blocking the arterial line between the bridge line and the fluid port, unblocking the bridge line, and unblocking the fluid source line;
- and
- operating the pump in a forward direction to produce fluid flow from the fluid source, through the dialyzer, and through the bridge line to force venous blood in the venous line toward the patient venous access and arterial blood in the arterial line toward the patient arterial access.
Dependencies are inferred from the claim text.