A renal failure therapy machine includes a blood cleaning filter, a dialysis fluid circuit including a balance chamber, the balance chamber including a fresh dialysis fluid compartment configured to send fresh dialysis fluid to the blood cleaning filter and a used dialysis fluid compartment configured to receive used dialysis fluid from the blood cleaning filter, a fresh dialysis fluid line in fluid communication with the fresh dialysis fluid compartment of the balance chamber and the blood cleaning filter, and a flow restrictor in fluid communication with the blood cleaning filter, the flow restrictor configured to cause fresh dialysis fluid delivered from the fresh dialysis fluid compartment, through the fresh dialysis fluid line, to the blood cleaning filter to be pressurized so that a first amount of the fresh dialysis fluid performs convective clearance and a second amount of the fresh dialysis fluid performs diffusive clearance.

The present invention relates to a method for removing fluid from a blood filter (19) for the blood treatment of a patient and/or for removing blood from the flood filter (19) after completing the blood treatment session. It further relates to a control and/or regulating device (29), a medical treatment apparatus having a control and/or regulating device (29) with which the method according to the present invention is executable, a digital storage medium, a computer program product as well as a computer program.

A dialysis system includes a dialysis machine configured to control fluid loss or ultrafiltration (UF) volume over a treatment; a graphical user interface (GUI) that allows selection of a prescription entry for the treatment; and a processor operating with the GUI, the processor programmed to (i) receive a plurality of prescription entries via a local or wide area mode of data communication, each prescription entry including at least one prescribed parameter for operating the dialysis machine to control the fluid loss or UF volume, and (ii) enable an operator to choose between the prescription entries provided at the GUI, and select one of the prescription entries for the treatment.

In some examples, a filtration assembly for hemodiafiltration therapy includes a filtration body connector configured to removably mechanically connect the filtration assembly and a dialyzer. In examples, the filtration assembly is configured to remain substantially stationary relative to the dialyzer when the filtration assembly mechanically mates with the dialyzer. The filtration body connector is configured to removably mechanically connect the filtration assembly with a plurality of different types of dialyzers, which may be selected based on a prescription for a particular patient.

A renal failure therapy machine includes a blood cleaning filter, a sorbent device configured to regenerate used therapy fluid from the blood cleaning filter, a therapy fluid pump configured to pump regenerated therapy fluid from the sorbent device back to the blood cleaning filter, and a flow restrictor in fluid communication with the blood cleaning filter, the therapy fluid pump and the sorbent device, the flow restrictor configured to cause regenerated therapy fluid pumped by the therapy fluid pump from the sorbent device to the blood cleaning filter to be pressurized so that a first amount of the regenerated therapy fluid performs convective clearance and a second amount of the regenerated therapy fluid performs diffusive clearance.

A blood purification apparatus is provided that can easily and accurately determine before treatment whether or not blocking of liquid by a check valve is appropriate. In the blood purification apparatus including a blood circuit, a dialyzer, a dialysate introduction line and a dialysate discharge line, pressure detection device, a dialysate extraction device, a dialysate supply line, and a check valve that blocks flow of a liquid from the blood circuit to the dialysate introduction line, there are provided a control means that makes it possible to generate a pressure difference between a side of the blood circuit and a side of the dialysate introduction line across the check valve, a monitor means that makes it possible to monitor a change in a detection value of the pressure detection device based on the pressure difference, and a determination means that makes it possible to determine whether or not blocking of liquid by the check valve is appropriate based on the change in the detection value of the pressure detection device.

Dialysis systems comprising actuators that cooperate to perform dialysis functions and sensors that cooperate to monitor dialysis functions are disclosed. According to one aspect, such a hemodialysis system comprises a user interface model layer, a therapy layer, below the user interface model layer, and a machine layer below the therapy layer. The user interface model layer is configured to manage the state of a graphical user interface and receive inputs from a graphical user interface. The therapy layer is configured to run state machines that generate therapy commands based at least in part on the inputs from the graphical user interface. The machine layer is configured to provide commands for the actuators based on the therapy commands.

A dialysis system includes a dialysis machine configured to control fluid loss or ultrafiltration (UF) volume over a treatment; a graphical user interface (GUI) that allows selection of a prescription entry for the treatment; and a processor operating with the GUI, the processor programmed to (i) receive a plurality of prescription entries via a local or wide area mode of data communication, each prescription entry including at least one prescribed parameter for operating the dialysis machine to control the fluid loss or UF volume, and (ii) enable an operator to choose between the prescription entries provided at the GUI, and select one of the prescription entries for the treatment.

A dialysis system includes a fresh dialysis fluid pump, a used dialysis fluid pump, a fresh fluid flow path, a used fluid flow path, and a dialysis fluid cassette carrying a balance chamber, the balance chamber including a first rigid portion, a second rigid portion, and a flexible sheet located between the first and second rigid portions, the flexible sheet dividing the balance chamber into (i) a fresh dialysis fluid compartment connected fluidly to the fresh dialysis fluid pump via the fresh fluid flow path, wherein fresh dialysis fluid contacts the first rigid portion and a first side of the flexible sheet, and (ii) a used dialysis fluid compartment connected fluidly to the used dialysis fluid pump via the used fluid flow path, wherein used dialysis fluid contacts the second rigid portion and a second side of the flexible sheet.

A hemodialysis system comprising: a source of priming fluid; an extracorporeal circuit including an arterial line, a venous line, and a drip chamber; a level sensor operable with the drip chamber; a reversible blood pump operable with the extracorporeal circuit; a connection between the arterial and the venous line; and a priming sequence in which priming fluid from the source is pumped in a reverse pump direction through the extracorporeal circuit and reversibly in a normal pump direction through the extracorporeal circuit, wherein an output from the level sensor is used to determine when to stop pumping in at least one of the directions.