In certain emergencies the only way to save mother and infant is through a c-section which requires anaesthesia. This device by Diamedica is described in the newest WHO Medical Device Compendium (2012) and offers a rapid response system for austere environments making it possible to provide anaesthesia for spontaneous breathing or assisted ventilation. It does not require compressed gasses or electricity. The device includes "a valve with a circuit removing the valve, a reservoir unit for pre-oxygenation, a vaporiser for consistency over a wide temperature range, and is calibrated for Halothane/Isoflurane or Sevoflurane to overcome possible supply problems."