Abstract: A peritoneal dialysis machine including a membrane pump and a touch screen display that includes a mode-indicating portion and an operation-descriptive portion, the mode-indicating portion having a plurality of touch sensitive indicia each indicating one of a plurality of modes in which the machine can operate, the display being used to keep a patient continually informed of which one mode of at least three operating modes the machine is operating in, as the operation-descriptive portion changes to display details of a specific operation being carried out within the one mode, the indicia for each of the three operating modes always being visible to the patient while the machine is operating, the operating mode being selected by the patient touching one of the indicia on the screen.

Abstract: A medical fluid flow control system includes an interface including a first pump area, the first pump area of the interface including a pneumatic actuator port and a gasket seal port; and a membrane gasket including a second pump area for mating with the first pump area, the second pump area including a blind section which covers the pneumatic actuator port when the gasket is mated with the interface, the second pump area further including an aperture, the aperture sized and positioned to seal around the gasket seal port, allowing a negative pressure to be applied through the gasket seal port to a flexible sheet of a pumping cassette.

Abstract: A peritoneal dialysis system includes a hardware unit including a piston having a contact surface and a stepper motor configured to move the piston; and a disposable unit received by the hardware unit, the disposable unit including a moveable membrane operable with the contact surface of the piston, the piston moveable towards and away from the disposable unit, wherein (i) the piston and the membrane are positioned relative to each other and (ii) the hardware unit is configured to apply a negative pressure to the moveable membrane of the disposable unit so that the negative pressure causes the moveable membrane to contact and conform to a shape of the contact surface and to follow the piston as the piston is moved away from the disposable unit by the stepper motor, and wherein the shape-contacted membrane moves with the piston as the piston is moved into the disposable unit by the stepper motor.

Abstract: A peritoneal dialysis system includes: (i) a hardware unit, the hardware unit including a pump actuator; (ii) a disposable unit received by the hardware unit, the disposable unit having a moveable membrane operable with the pump actuator, the pump actuator moveable towards and away from the disposable unit; and (iii) the hardware unit and disposable unit configured to hold a negative pressure between the pump actuator and the moveable membrane of the disposable unit, the negative pressure causing the moveable membrane to follow the pump actuator as the actuator is moved away from the disposable unit, the pump actuator and membrane positioned relative to each other such that the membrane moves with the pump actuator as the actuator is moved into the disposable unit.

Abstract: A method for connecting a plurality of solution line connectors to a plurality of supply line connectors of a dialysis system includes: translating a tip protector remover in a first direction towards the plurality of supply line connectors to remove a plurality of solution line tip protectors from the plurality of solution line connectors; locking the tip protector remover to each of a plurality of supply line tip protectors connected to the plurality of supply line connectors; translating the tip protector remover in a second direction towards the plurality of solution line connectors to remove the plurality of supply line tip protectors from the supply line connectors; translating the tip protector remover in a third direction different from the first and second directions; translating one of the plurality of solution line connectors and the plurality of supply line connectors the other of the solution line connectors and the supply line connectors to connect each of the solution line connectors to one of

Abstract: A peritoneal dialysis system includes: (i) an enclosure; (ii) a stepper motor housed by the enclosure; (iii) a pump head in operable communication with the stepper motor; and (iv) a disposable unit including at least one flexible membrane attached to a rigid piece, the enclosure configured to receive the disposable unit such that the stepper motor can move the pump head towards and away from the flexible membrane to cause, (a) the flexible membrane to move outwardly with respect to the rigid piece as the pump head is moved away from the disposable unit, and (b) the flexible membrane to move inwardly with respect to the rigid piece as the pump head is moved away from the disposable unit.

Abstract: A medical fluid pumping system includes a medical fluid pump; a first pressure chamber connected fluidly to the medical fluid pump; a second pressure chamber connected fluidly to the medical fluid pump; first and second pressure sensors connected operably to the first and second pressure chambers, respectively; and at least one processor operable with the pressure sensors to calculate a volume of gas in the medical fluid pump prior to a pump-out stroke using a reading from the first pressure sensor after exposing the pump to gas pressure from the first pressure chamber and to use the calculated volume of gas in combination with a known volume of the second pressure chamber and a pressure decay reading taken via the second pressure sensor during the pump-out stroke to calculate at least one volume of fluid pumped during the pump-out stroke.

Abstract: A system and method for automatically adjusting a Continuous Cycling Peritoneal Dialysis (“CCPD”) therapy to minimize the potential for excess intra-peritoneal volume. The adjustments are made at the end of the drain, just prior to the next fill. The adjustments short the next fill, if necessary, to limit the intra-peritoneal volume, add a cycle, if necessary, to use all of the available dialysis solution and will average the remaining dwell time to maximize the therapeutic benefit of the therapy in the allotted time. In another embodiment, a tidal therapy using trended patient UF data is provided.

Abstract: A system and method for automatically adjusting a Continuous Cycling Peritoneal Dialysis (“CCPD”) therapy to minimize the potential for excess intra-peritoneal volume. The adjustments are made at the end of the drain, just prior to the next fill. The adjustments short the next fill, if necessary, to limit the intra-peritoneal volume, add a cycle, if necessary, to use all of the available dialysis solution and will average the remaining dwell time to maximize the therapeutic benefit of the therapy in the allotted time. In another embodiment, a tidal therapy using trended patient UF data is provided.

Abstract: A dialysis system includes a dialysis instrument including at least one pump actuator; a disposable cassette operable with the at least one pump actuator, a plurality of supply lines connected to the disposable cassette, each supply line including a supply line connector and a supply line tip protector; a plurality of dialysis fluid containers, the dialysis fluid containers each including a solution line having a solution line connector and a solution line tip protector; and an auto-connection mechanism including a solution line connector holder, a supply line connector holder, one of the holders fixed, the other of the holders moveable, and a moveable tip protector remover.

Abstract: A dialysis machine includes: (i) a source of peritoneal dialysis solution; (ii) a patient line for passing the peritoneal dialysis solution to the peritoneal cavity of a patient; (iii) a pump for pumping the peritoneal dialysis solution to the peritoneal cavity via the patient line; (iv) a heater for heating the peritoneal dialysis solution prior to the dialysis solution reaching the patient line, the heater including first and second heating elements; (v) a voltage input from a remote power source; and (vi) a control scheme responsive to the voltage input and configured to (a) automatically maintain a proper dialysis solution temperature for the patient via the first and second heating elements regardless of the voltage input wherein the control (b) account for an inlet temperature of the dialysis solution to the heater and (c) account for heater efficiency.

Abstract: A medical fluid machine includes a housing providing a first wall and a second wall, the first and second walls at least partially defining a pump chamber. A fluid receptacle is located within the pump chamber, the fluid receptacle including first and second flexible membranes configured to be moved apart to accept a medical fluid and moved together to dispel the fluid. A medical fluid outlet is in communication with the fluid receptacle. A first valve arrangement is configured to enable medical fluid in a sufficiently air-free condition to be delivered from the receptacle through the medical fluid outlet to a patient. A second valve arrangement is configured to enable medical fluid with entrained air to be delivered instead from the receptacle through the medical fluid outlet to an entrained air destination.

Abstract: A portable, flexible peritoneal dialysis system is disclosed. The system includes a flexible harness, such as canvas or cloth, to mount a stiff housing with a heater for holding and heating fresh dialysis fluid. The harness includes straps or other suspending devices for holding a second, flexible housing for a drain bag for holding sent dialysis fluid. The upper portion of the system includes a hook and a load cell for suspending the remaining portions. The load cell is used to measure the weight of the apparatus. By keeping track of the weight and the changes, the quantity of fluid removed from the patient, spent dialysate, is tracked, as is fresh dialysate infused into the patient. An electronics or control portion controls heating of the fresh dialysate, and operation of pumps and valves for moving the dialysate. This portion also includes alarms and communications equipment.

Abstract: A dialysis system includes at least one dialysis fluid pump actuator, a disposable cassette including at least one pump chamber operable with the at least one pump actuator, the disposable cassette further including a plurality of fluid ports configured to be connected fluidly to a plurality of fluid containers, and a processor programmed to cause the at least one pump actuator to operate the at least one pumping chamber to selectively move effluent dialysis fluid to a drain container or to a sample container.

Abstract: A dialysis system includes a pump actuator; a disposable cassette having a pump chamber operable with the pump actuator; a patient line connected to the disposable cassette and in fluid communication with the pump chamber; and a logic implementor configured to prime the patient line according to a sequence in which (i) the pump actuator activates the pump chamber to partially prime the patient line and (ii) a remainder of the patient line is primed via gravity.

Abstract: A medical fluid machine includes a housing providing a first wall and a second wall, the first and second walls at least partially defining a pump chamber. A fluid receptacle is located within the pump chamber, the fluid receptacle including first and second flexible membranes configured to be moved apart to accept a medical fluid and moved together to dispel the fluid. A medical fluid outlet is in communication with the fluid receptacle. A first valve arrangement is configured to enable medical fluid in a sufficiently air-free condition to be delivered from the receptacle through the medical fluid outlet to a patient. A second valve arrangement is configured to enable medical fluid with entrained air to be delivered instead from the receptacle through the medical fluid outlet to an entrained air destination.

Abstract: A dialysis system includes a dialysis instrument including a pump actuator; a disposable dialysis fluid carrying set including a pump chamber operable with the pump actuator; and a graphical user interface including a selection highlighting input device and a selection entering input device, the selection highlighting input device configured to enable a user to perform each of: (i) screen navigation selection; (ii) parameter selection including at least one parameter related to the pump actuator and pump chamber; and (iii) value selection including at least one value related to the pump actuator and pump chamber.

Abstract: A medical fluid machine includes a housing providing a first wall and a second wall, the first and second walls at least partially defining a pump chamber. A fluid receptacle is located within the pump chamber, the fluid receptacle including first and second flexible membranes configured to be moved apart to accept a medical fluid and moved together to dispel the fluid. A medical fluid outlet is in communication with the fluid receptacle. A first valve arrangement is configured to enable medical fluid in a sufficiently air-free condition to be delivered from the receptacle through the medical fluid outlet to a patient. A second valve arrangement is configured to enable medical fluid with entrained air to be delivered instead from the receptacle through the medical fluid outlet to an entrained air destination.

Abstract: A dialysis system includes a dialysis instrument; a disposable cassette, the cassette including a rigid portion defining at least one pumping chamber, a pouch fitted over the rigid portion, the pouch including at least one flexible sheet sealed so as to provide a sealed environment inside the pouch; and wherein the instrument is configured to press the at least one flexible sheet against the pumping chamber to seal the pumping chamber for operation.

Abstract: A dialysis system includes a dialysis instrument; a disposable cassette operable with the dialysis instrument; a dual lumen patient line including dual lumens, the dual lumen patient line connected to the disposable cassette; and a priming sequence in which ends of the dual lumens are connected together, a first pump chamber of the disposable cassette pumps fluid through the dual lumens until fluid reaches a second pump chamber of the disposable cassette.