This document summarizes the features and functions of the Elisa ventilator manufactured by Heinen + Löwenstein GmbH. The Elisa is an ICU ventilator that can be used for adults, pediatrics, and neonates. It has various ventilation modes including volume-controlled, pressure-controlled, and non-invasive modes. It also has comprehensive safety features and alarms. Graphical displays and trending functions allow for monitoring of ventilator parameters over time.