BiFlo Masks for Provent and Theravent Sleep Study Airflow
BiFlow Masks can be used with Provent and Theravent to collect a nasal airflow trace during a sleep study. The mask is just placed over the nose to allow measurement of a flow trace.
The previous cannula that clipped onto the older style hard Provent is no longer available. The older style Provent had a hard frame that the cannula clipped onto. Manufacturing of the older type ceased in 2012.