BiFlo Masks for Provent and Theravent Sleep Study Airflow

Description

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.