Ventilator for anaesthesia/ventilation with automatic and manual respiration

摘要

The ventilator has a bellow-in-bottle system for automatic operation and a manual ventilation bag for manual operation. It ensures a constant volume with a pressure equalisation function due to a combined functional group circuit which, when linked in control terms, warns against additional loss of energy. These different tasks are achieved with a circuit arrangement which via U/P converters usefully connected to a switching unit implements ventilation with constant volume or constant pressure, manual ventilation and spontaneous respiration.