A fluid delivery system includes a fluid pump; a pressure sensor for sensing pressure of fluid pumped by the fluid pump, wherein an output from the pressure sensor varies depending upon whether medical fluid or air is pumped during a pump stroke of the medical fluid pump; and a control unit configured to use the output from the pressure sensor to determine whether medical fluid or air is present during the pump stroke.

A dialysis fluid system includes a dialysis fluid inlet; a dialysis fluid outlet; a pump positioned and arranged to pump dialysis fluid through the dialysis fluid inlet and the dialysis fluid outlet; and an inductive heater located between the dialysis fluid inlet and the dialysis fluid outlet, the inductive heater including a fluid flowpath positioned and arranged to receive non-heated dialysis fluid from the dialysis fluid inlet and to output heated dialysis fluid to the a dialysis fluid outlet, a conductive heater element located within the fluid flowpath so as to be or act as a secondary coil of a transformer, and a primary coil of the transformer located outside of the fluid flowpath and positioned so as to magnetically induce a current into the conductive heater element, causing the conductive heater element and surrounding fluid to heat.

A hemodiafiltration system with a disposable pumping unit is disclosed. An example system includes a medical fluid pump actuator, a medical fluid heater, a blood filter and a disposable unit. The example disposable unit includes a medical fluid cassette portion including a medical fluid cassette housing configured to be operatively connected to the medical fluid pump actuator to pump medical fluid through the medical fluid cassette portion when the medical fluid cassette portion is in fluid communication with a medical fluid source. The example medical fluid cassette portion is also configured to be placed in fluid communication with the blood filter and with an extracorporeal circuit communicating with the blood filter, the fluid communication enabling hemodiafiltration to be performed. The example disposable unit also includes a heater bag configured to be placed in operable communication with the medical fluid heater and in fluid communication with the medical fluid cassette portion.

The present invention relates to a device and to a method for producing dialysate, wherein the device comprises a first part and a second part designed as a circuit, wherein the first part comprises a water connection or a water container and the primary side of a filter, wherein the filter is designed to produce purified water from the water by forward osmosis, and wherein the second part comprises the secondary side of the filter, a reservoir, a filtrate line which leads from the secondary side of the filter to the reservoir, and a return line leading from the reservoir to the secondary side of the filter, wherein an electrodialysis unit comprising a diluate chamber and a concentrate chamber is further provided, wherein the concentrate chamber is fluidically connected to the secondary side of the filter.

The present invention relates to an apparatus and a method for preparing dialyzate, wherein the apparatus has a first part and a second part that is configured as a circuit; wherein the first part comprises a water connection or a water container as well as the primary side of a filter; wherein the filter is configured to prepare purified water from the water through forward osmosis; and wherein the second part comprises the secondary side of the filter, a reservoir, a filtrate line that leads from the secondary side of the filter to the reservoir, and a line leading from the reservoir to the secondary side of the filter, with the reservoir being a container having means for connecting the container to a dialysis machine.

A method and a system (10a) comprising an integrated water purifying apparatus (110) with a pre-filter circuit (402) including a particle filter and an activated carbon filter arranged to produce pre-treated water; a fluid circuit (404) arranged to receive pre-treated water from the pre-filter circuit (402), the fluid circuit (404) includes an RO-pump (450) and a Reverse Osmosis, RO, device, (301) arranged to produce purified water; a heating device (302) arranged to heat purified water from the RO device (301) to a temperature above 65°; the water purifying apparatus (110) is further arranged to heat disinfect the fluid circuit (404) using the heated purified water. The system (1) further comprises a line set (40) connected to the purified water outlet connector (128) at a water line connector (68) of the line set (40), wherein the line set (40) includes at least one sterile sterilizing grade filter (70a, 70b) arranged to filter the purified water into sterile purified water.

An extracorporeal blood treatment apparatus (1) comprising a control unit (10) connectable to a blood warming device (200). The apparatus (1) comprises: an extracorporeal blood circuit (100) and at least one infusion line (15, 21, 25) connected to the extracorporeal blood circuit (100). A control unit (10) is configured to execute the following procedure: receiving a first value representative of a desired blood temperature (T.sub.des) at an end (70) of a blood return line (7) configured to be connected to a venous vascular access of a patient (P); receiving at least a first signal relating to at least a flow rate (Q.sub.PBP, Q.sub.REP1, Q.sub.REP2) of an infusion fluid in the at least one infusion line (15, 21, 25); calculating a set point value of an operating parameter (T.sub.OUT; P.sub.w) to be imposed on the warming device (200) configured to heat a blood heating zone (H) of the extracorporeal blood circuit (100) in order to maintain the desired blood temperature (T.sub.des) at the end (70) of the blood return line (7). The set point is calculated based on input parameters comprising: at least the first value representative of the desired blood temperature (T.sub.des) and at least one selected in the group of: the first signal (Q.sub.REP1, Q.sub.PBP, Q.sub.REP2) and a second value representative of a temperature (T.sub.REP1, T.sub.PBP, T.sub.REP2) of the at least one infusion fluid in the at least one infusion line (15, 21, 25).

A fluid handling cassette, such as that useable with an automated peritoneal dialysis (APD) cycler device or other infusion apparatus, may include a generally planar body having at least one pump chamber formed as a depression in a first side of the body and a plurality of flowpaths for a fluid that includes a channel. A patient line port may be arranged for connection to a patient line and be in fluid communication with the at least one pump chamber via at least a first one of said flowpaths, and an optional membrane may be attached to the first side of the body over the at least one pump chamber. In one embodiment, the membrane may have a pump chamber portion with an unstressed shape that generally conforms to the depression of the at least one pump chamber in the body and is arranged to be movable for movement of the fluid in a useable space of the at least one pump chamber. One or more spacers may be provided in the at least one pump chamber to prevent the membrane from contacting an inner wall of the at least one pump chamber. The patient line, a drain line, and/or a heater bag line may be positioned to be separately occludable in relation to one or more solution lines that are connectable to the cassette.

A fluid preparation apparatus for a renal failure treatment is disclosed. In an example, the fluid preparation apparatus includes an inlet configured to receive water from a water source and a fluid line fluidly connected to the inlet. The apparatus also includes a pump fluidly connected to the fluid line. The pump is configured to pump concentrate from a concentrate container to mix with the water to form a fluid mixture. The apparatus further includes a sensor configured to measure a composition characteristic of the fluid mixture. Additionally, the apparatus includes a controller operably coupled to the pump, the sensor, and a valve. The controller is configured to receive a composition characteristic value from the sensor, and cause the valve to route the fluid mixture for the renal failure treatment when the composition characteristic value indicates that the fluid mixture is suitable for the renal failure treatment.

A dialysis system is disclosed. An example dialysis system includes a water treatment device configured to provide purified water and a dialysis machine including a dialysate holding tank, and a dialysate mixing pump connected to a source of concentrate. The dialysis machine is configured to prepare dialysate using the purified water by receiving an indication that a batch of dialysate is needed, transmitting a first message to the water treatment device to begin providing the purified water, and causing the dialysate mixing pump to pump a concentrate from the source of concentrate for mixing with the purified water to form the dialysate for storage in the dialysate holding tank. After the batch of the dialysate has been stored to the dialysate holding tank, the dialysis machine transmits a second message to the water treatment device to stop providing the purified water.