Abstract: Medication delivery devices are provided having a housing comprising a reservoir sized sufficiently to hold medication, a dose button being rotatable relative to the housing to select a dose size of the medication for an injection, a printed circuit board, a conductive trace, and a microcontroller. In some embodiments, a bias source can be in electrical communication with the conductive trace, and the microcontroller can be in electrical communication with the conductive trace through a logic input. In some embodiments, an analog-to-digital converter can be in electrical communication with the conductive trace, the microcontroller, and a bias source. The microcontroller is configured to receive a signal from the ADC or the logic input, and determine, based on the received signal, that moisture may be present on the printed circuit board.

Abstract: A dialysis machine operable with a disposable set having at least one container, the dialysis machine including a pump actuator operable to pump dialysis fluid to and/or from the at least one container; a weigh plate positioned to support the at least one container; a plurality of operational load cells positioned to support the weigh plate; a linear actuator positioned to apply a force to the weigh plate; a calibration load cell positioned to measure the force applied by the linear actuator; and a control unit in operable communication with the operational load cells, the linear actuator and the calibration load cell, the control unit configured to cause the linear actuator to apply the force to the weigh plate, compare resulting outputs from the operational load cells and the calibration load cell, and determine a calibration factor from the comparison for offsetting future outputs from the operational load cells.

Abstract: A peritoneal dialysis system comprises a cycler including a pump actuator, a patient line valve actuator, at least one supply line valve actuator, and a drain line valve actuator; and a disposable medical fluid cassette including a pumping portion configured to operate with the pump actuator, a patient line valve seat configured to operate with the patient line valve actuator, a rigid body defining a common well, at least one supply line valve seat located in the common well and configured to operate with at least one supply line valve actuator, and a drain line valve seat located in the common well and configured to operate with the drain line valve actuator.