Peritoneal dialysis cycler using micropump

A peritoneal dialysis (“PD”) system comprising:

• a cycler including
• a micropump actuator,
• an inline fluid heater or batch fluid heater,
• a pressure transducer, and
• at least one valve actuator;
• a disposable set including
• a micropump head sized and shaped for mating with and being cyclically driven by the micropump actuator,
• a pressure sensor configured to operably communicate with the pressure transducer,
• at least one fluid valve portion or a portion of at least one fluid line for interfacing with the at least one valve actuator,
• a fresh patient line located on a first side of the micropump head,
• a used patient line located on an opposite, second side of the micropump head,
• a Y- or T-connector connected to the fresh patient line and the used patient line, the Y- or T-connector configured to fluidly couple the fresh patient line and the used patient line to a patient line, and
• an inline fluid heating pathway or a batch heater container located along the fresh patient line;
• and
• a control unit, wherein the fresh patient line, the used patient line, and the Y- or T-connector of the disposable set are arranged to allow, and the control unit is programmed to operate the micropump actuator and the at least one valve actuator so that fresh and used dialysis fluid flows through the micropump head in a same direction,
• wherein the inline fluid heater or batch fluid heater of the cycler is positioned and arranged to heat the inline fluid heating pathway or the batch heater container of the disposable set, respectively, when the disposable set is mounted to the cycler,
• wherein the at least one valve actuator includes a first valve actuator located along the fresh patient line and a second valve actuator located along the used patient line when the disposable set is mounted to the cycler,
• wherein the control unit is configured to cause the first valve actuator to open and the second valve actuator to close so that the micropump actuator pumps the fresh dialysis fluid through the fresh patient line to the patient line, and
• wherein the control unit is configured to cause the second valve actuator to open and the first valve actuator to close so that the micropump actuator pumps the used dialysis fluid through the used patient line from the patient line.