The Servo-i used to be a Siemens vent before Draeger merged with them. The combined company would have had too much of a monopoly so the Siemens vent (and aneasthetic machine) had to be sold off.
The Draeger Babylog8000 has HFV as an option.
High frequecy ventilation is similar to high frequecy oscilation.
Have a look to see if it is suitable.
Robert
