Leakage current management systems, devices, and methods

A method of reducing an electrical leakage current flowing through a tube filled with blood, the method comprising:

• providing a first current sensor configured to detect the electrical leakage current flowing through the tube filled with the blood at a first location along said tube;
• providing a second current sensor configured to detect the electrical leakage current flowing through the tube filled with the blood at a third location along said tube;
• connecting a patient to a dialysis treatment system with said tube, the tube conveying the blood between the patient and the dialysis treatment system;
• providing a transducer configured to generate an electrical current in the tube filled with the blood at a second location along said tube;
• providing a controller configured to receive as input a first signal from the first current sensor and a second signal from the second current sensor and to output a driving signal to the transducer;
• detecting the electrical leakage current by the first current sensor and outputting the first signal from the first current sensor to the controller;
• detecting the electrical leakage current by the second current sensor and outputting the second signal from the second current sensor to the controller;
• receiving the first signal from the first current sensor and the second signal from the second current sensor by the controller;
• generating the driving signal by the controller based on at least both of the first signal from the first current sensor and the second signal from the second current sensor;
• and
• driving the transducer with the driving signal to thereby generate a canceling electrical current that reduces the electrical leakage current flowing through the tube filled with the blood between the patient and the dialysis treatment system,
• wherein
• the first location along said tube is closest to the patient,
• the second location along said tube is between the first location and third location, and
• the third location along said tube is farthest from the patient and closest to the dialysis treatment system.