Hi-VNITM Therapy

High Velocity Nasal Insufflation (Hi-VNITM) is a refined form of High Flow Nasal Cannula (HFNC) that flushes the anatomical dead space of expiratory gas, creating a fresh gas reservoir that facilitates oxygenation and alveolar ventilation.

How It Works


Hi-VNITM differs from HFNC by the higher velocity gas flows it delivers through a small bore cannula system, allowing it to more efficiently flush the upper airway of expiratory gas high in CO2 and replace it with optimally conditioned gas. This improved flush efficiency results in Hi-VNITM being able to provide a therapy focused on supporting ventilation (CO2 removal) as well as oxygenation.