Dear Augustina,
Micromed Sw has native export to edf+ and BDF as well as ASCII. If you only have Micromed .TRC data and to the manufacturer’s software you might want to look at an EEGLab plugin that reads .trc files into EEGLab, from which you can export to cartool-compatible formats.
The plugin can be obtained from Micromed following a NDA.
Best of luck
Stefano