PneaVoX technology is unique. It makes possible to record 3 physiological parameters with a single sensor:
- Nose and mouth breathing.
- Respiratory efforts in order to discriminate obstructive, central and mixed sleep apnoea.
- Snoring.
In addition, upper airways resistances can be estimated by acoustic intensity measurement.
The sound and pressure measured inside the chamber provide a raw signal.
Three signals are extracted from this raw signal by using frequency filters:
- respiratory sounds
- snoring
- pressure variations (related to respiratory effort)
These signals allow the following:
- Detection of sleep apnea (intensity 1, sound 1)
- Detection of snoring (intensity 2, sound 2)
- Characterization of the apnea (suprasternal pressure)
Demonstration of central apnea, by the PneaVoX sensor :