Extracorporeal blood treatment device and method for outputting a report to an extracorporeal blood treatment device

An extracorporeal dialysis machine performing the steps of:

• (a) outputting at least one report to a user of the dialysis machine, characterized in that the dialysis machine is configured to output the at least one report a specific period of time after switching on of the dialysis machine and/or on the occurrence of a specific event, said report relating to one or more pieces of information relating to the validity of a T1 test carried out at the dialysis machine, and
• (b) preventing a repeat operation of the dialysis machine if no T1 test has been carried out, wherein the dialysis machine is configured to output (i) at least one first report at the end of a first period of time, said first report relating to duration of a current operating time and/or to a permitted maximum continuous operating time, i.e. the permitted period of time between two tests carried out at the dialysis machine, with the first period of time being smaller than the maximum continuous permitted operating time of the device, (ii) the first report again after a fixed time interval after the end of the first period and to prompt the user to confirm reading of the first report, and (iii) at least one second report at specific time intervals after the end of a second period of time greater than the first period of time, the second report having the content that the dialysis machine has to be switched off, with second report output in a first variant if the dialysis machine is currently in a treatment mode and/or the second report output in a second variant if the dialysis machine is in a mode different from a treatment mode.