An apparatus for extracorporeal treatment of fluid and a process of setting up a medical apparatus for the delivery or collection of fluids are disclosed. According to the apparatus and the process, a control unit (10) is configured calculate set values of two or more of the fluid flow rates based on a fluid flow rate set by the operator and on a prescribed dose value (D.sub.set).

A dialysis machine has a blood circuit, a blood pump, a dialyzer, a venous pressure sensor, a substituate line, and a control unit. The control unit can operate the blood pump in a first operating mode and in a special operating mode, and start the special operating mode after a trigger event. In the special operating mode, a blood pump conveying rate is controlled via a default value or regulated to a desired value, with the default or desired value being derived from a value determined before the started special mode or corresponding to the value. The presence of an obstacle is polled before the special mode, and depending on the presence thereof, the start of the special mode is blocked or delayed and/or the selection of the default value or the desired value on the presence of the obstacle differs from the selection without the presence of the obstacle.

The present disclosure relates to an addition line for adding an infusion solution to a fluid, which flows in an extracorporeal blood circuit, wherein the addition line comprises a pressure release valve or a check valve. It further relates to an extracorporeal blood circuit, a blood treatment apparatus and a method using the addition line.

The invention relates to an apparatus for carrying out an extracorporeal blood treatment in which a substitution fluid is administered to the patient, wherein the apparatus comprises an extracorporeal blood circuit and a substitution line opening into the extracorporeal blood circuit, wherein the substitution line has a pump for conveying substitution fluid into the extracorporeal circuit, wherein at least two, and preferably more than two, containers for the provision of a substitution fluid are connected separately and at the intake side of the pump to the substitution line, and wherein at least one pressure valve is arranged between the pump and at least one of the containers, said pressure valve allowing a flow of substitution fluid to the pump on an exceeding of an opening pressure.

An apparatus for extracorporeal treatment of fluid and a process of setting up a medical apparatus for the delivery or collection of fluids are disclosed. According to the apparatus and the process, a control unit (10) is configured calculate set values of two or more of the fluid flow rates based on a fluid flow rate set by the operator and on a prescribed dose value (D.sub.set).

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.

A dialysis device having an extracorporeal blood circuit which has an arterial line having a blood pump and an arterial needle for connection to a patient, a venous line having a venous needle for connection to a patient and a dialyzer arranged between the arterial line and the venous line and having a blood chamber and a dialysis fluid chamber is provided. The dialysis device furthermore has a control unit and an extracorporeal blood pressure sensor which is arranged at the suction side of the blood pump. The control unit is configured such that a signal output takes place which indicates the presence of recirculation when a change in the signal of the sensor following a trigger event exceeds a threshold value.

The disclosure relates to a blood treatment device for use in blood treatment therapies, comprising: an extracorporeal blood circuit, a dialyzer and a dialysis fluid circuit, wherein the extracorporeal blood circuit and the dialysis fluid circuit are separated from each other via a membrane provided in the dialyzer, via which blood can be filtered; at least one substitution solution pump, which is configured to supply a substitution solution to the extracorporeal blood circuit before and/or after the dialyzer; an effluent pressure sensor, which is configured to measure a pressure in the dialysis fluid circuit after the dialyzer, and a control unit, which is configured to automatically reduce a flow rate of the at least one substitution solution pump when an effluent pressure measured by the effluent pressure sensor drops during an ongoing blood treatment therapy.

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.

The application is directed to an extracorporeal blood processing system capable of using dialysate to prime the system. A plastic molded compact manifold supports molded blood and dialysate fluidic pathways along with relevant sensors, valves and pumps. The compact manifold is also disposable in one embodiment and can be detachably installed in the dialysis machine. A two-way valve in the manifold is used to direct the dialysate flow through the blood circuit to prime the circuit for use in treatment.