A conductivity measurement device includes first and second conductivity measurement flow channels positioned in a fluid circuit and fluidly linked for fluid flow between the first and second conductivity measurement flow channels. A controller having a current source connected to the first and second conductivity channels applies alternating voltages at frequencies that are different, each being respective to one of the first and second conductivity cells.

A method of performing a dialysis treatment includes using a pump and a dialysate supply line to transport peritoneal dialysis fluid, the supply line having a proximal end into which peritoneal dialysis fluid is supplied and from which spend dialysate is withdrawn, and a distal end which is connected to a patient's peritoneal access. The method further includes generating proximal and distal pressure signals using pressure detectors located at both the proximal and distal ends, respectively, of said supply line. During a drain cycle in which spent dialysate is pumped from the patient, the method includes, responsively to the proximal and distal pressure signals, detecting a characteristic of a pressure difference between the distal and proximal ends whose magnitude is determined by a predicted change in dialysate properties, and responsively to the characteristic, generating a signal indicating the change in dialysate properties.

A manifold for the circulation of fluids along predetermined circulation paths or circuits, for example, for extracorporeal dialysis machines. The manifold comprises a main body with a plurality of inner channels mutually connected to define the predetermined circulation paths, the predetermined circulation paths communicating with the exterior of the main body by way of at least one inlet and at least one outlet adapted to be connected to component parts and/or tubing of an extracorporeal dialysis machine, and dialysis machine equipped with the aforesaid manifold.

The availability of a heart-lung machine in a box provides an opportunity for saving lives in emergency situations arising outside a hospital and for more cost effective care in hospital settings.

A pneumatic system for a medical fluid machine operating a medical fluid cassette, the pneumatic system including an interface for supplying positive pneumatic pressure and negative pneumatic pressure to the medical fluid cassette; a source of positive pneumatic pressure; a source of negative pneumatic pressure; and a pneumatic pump including a first head and a second head, wherein the first head is dedicated to supplying positive pneumatic pressure to the positive pneumatic pressure source and the second head is dedicated to supplying negative pneumatic pressure to the negative pneumatic pressure source.

A portable hemodialysis system is provided including a dialyzer, a closed loop blood flow path which transports blood from a patient to the dialyzer and back to the patient, and a closed loop dialysate flow path which transports dialysate through the dialyzer. In addition, the hemodialysis system includes two reservoirs which can be alternately placed in the dialysis flow path using various controllable fluid valves. The weight, and therefore the level of dialysate, of each reservoir is measured by a preferred level sensor having a strain measuring device which includes a load cell and a tilt sensor. The load cell and tilt sensor are electrically connected to a processor for sending force and tilt measurements to the processor. The processor may analyze the tilt measurements to correct for any inaccurate measurements of the load cell caused by the tilt.

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 method includes flowing spent dialysate through a spent dialysate line of a dialysis system into a fluid receptacle fluidly coupled to the spent dialysate line, reacting the spent dialysate with a chemical reagent contained within the fluid receptacle to generate a reacted sample, emitting electromagnetic radiation through the reacted sample using an emitter; detecting a level of one or more waste products present in the spent dialysate using a spectroscopy sensor positioned proximate the fluid receptacle.

The present disclosure relates to a system for temperature management for patients in stationary and mobile ECLS and/or ECMO therapy, with a disposable and a fluid circuit, wherein the disposable comprises a reservoir or bag provided with at least one supply line and a drain line, further comprising a pumping unit element as part of the disposable, by means of which liquid in the reservoir or bag can be pumped through the fluid circuit, wherein in the mounted state of the system all fluid-guiding parts of the system are completely encapsulated and separated from intracorporeal and extracorporeal blood circuit of the patient undergoing the ECLS and/or ECMO therapy.

A peritoneal dialysis system includes a control unit is programmed to cause (i) a pressure sensor to take a first pressure reading of a reference chamber with a pneumatic valve closed, (ii) a pump actuator to pump fresh dialysis fluid through a fresh dialysis fluid pathway into a patient line expandable chamber, expanding the expandable chamber into a dome, (iii) the pneumatic valve to open, allowing the reference chamber to communicate pneumatically with any air in the dome, (iv) the pressure sensor to take a second pressure reading with the pneumatic valve open, (v) the first and second pressure readings to be used with the ideal gas law to determine an amount of air in the dome, and (vi) the amount of air in the dome and a known volume of the dome to be used to determine an amount of fresh dialysis fluid delivered into the expandable chamber.