Got this from CX site:
Non Critical Medical Portable Electronic Device (e.g. CPAP machine, nebulisers, neurostimulators, HR/BP monitors, syringe/feeding pumps, suction devices and aspirators)
All non critical medical portable electronic devices can either be connected to the inflight laptop power 110Vac outlets (where available) or be self powered using approved dry-cell or gel-type battery packs in accordance with all applicable regulations.
Great news indeed, I will try to use it on my return flight from YVR next month.