Apparatus or systems which employ luminescence quenching to produce an oxygen concentration indicative signal. Components of such systems include: (1) an airway adapter, sampling cell, or the like having a sensor which is excited into luminescence with the luminescence decaying in a manner reflecting...http://www.google.com.au/patents/US6325978?utm_source=gb-gplus-sharePatent US6325978 - Oxygen monitoring and apparatus
