Peritoneal dialysis system having disinfection gas relief

A peritoneal dialysis (“PD”) system comprising:

• a PD fluid pump;
• a disinfection loop including the PD fluid pump, the disinfection loop allowing PD fluid to be used for disinfecting the disinfection loop;
• an acid solution source containing an acid for use during a disinfection sequence;
• a drain line positioned and arranged to drain used PD fluid during treatment;
• a gas line;
• at least one gas valve located along the gas line, the at least one gas valve enabling fluid communication between the gas line and the drain line;
• a pressure sensor positioned and arranged to sense PD fluid pressure in the disinfection loop during the disinfection sequence;
• and
• a control unit, the pressure sensor outputting to the control unit, the control unit configured to cause the at least one gas valve to open when the PD fluid pressure in the disinfection loop reaches or exceeds a threshold PD fluid pressure due to gas formed from mixing the PD fluid and the acid during the disinfection sequence, and wherein opening the at least one gas valve allows PD fluid pressure due to the gas formation to dissipate towards the drain line.

A peritoneal dialysis (“PD”) system comprising:

• a PD fluid pump;
• a disinfection loop including the PD fluid pump, the disinfection loop allowing PD fluid to be used for disinfecting the disinfection loop;
• an airtrap located along the disinfection loop;
• at least one gas valve located along at least one gas line leading to an upper portion of the airtrap;
• a pressure sensor positioned and arranged to sense PD fluid pressure in the disinfection loop during a disinfection sequence;
• and
• a control unit, the pressure sensor outputting to the control unit, the control unit configured to cause the at least one gas valve to open and the PD fluid pump to pump an amount of gas from the airtrap when the PD fluid pressure in the disinfection loop reaches or exceeds a threshold PD fluid pressure due to gas formation caused during the disinfection sequence.