Wear trend analysis technique for components of a dialysis machine

A dialysis machine including a plurality of components used to perform dialysis treatments and a safety and control system having a processor device using memory by which to control the components to perform the dialysis treatments and by which to develop information for analyzing wear on at least one of the components, comprising:

• means for monitoring actual performance of each component to be analyzed during use of the dialysis machine;
• means for determining a test value from the actual performance monitored;
• means for recording a threshold value which defines the limits of normal performance for each component to be analyzed;
• means for comparing the test value to the threshold value to obtain a maintenance count value based on the comparison;
• means for recording the maintenance count value in memory;
• means for incrementing the maintenance count value in the memory in relation to each instance of the test value exceeding the threshold value;
• and
• means for selectively displaying the maintenance count value.