The Vivo 40 offers you the following unique advantages in a bi-level ST:The Vivo 40 is the only FDA approved Respiratory Assist Device indicated for both invasive and noninvasive therapy. The Vivo 40 has an internal 3 hour battery. It is the only Bilevel ST with an internal battery. The Vivo 40’s pressure range is 4-40 cm/H2O! The Vivo 40’s eSync triggering system is an effort based system which allows the clinician the flexibility to set a patient’s inspiratory and expiratory triggering based on their pathology. The Vivo 40’s Target Volume automatically adapts the peak pressures breath to breath to deliver a clinician’s set tidal volume.