A system for delivering therapeutic breathing gas to patients is provided to deliver a variable bolus volume in response to the patient's breathing pattern. The system includes a gas source, a conserver between the gas source and the patient, a sensor which detects breaths by the patient and a controller...http://www.google.es/patents/US7841343?utm_source=gb-gplus-sharePatente US7841343 - Systems and methods for delivering therapeutic gas to patients
Systems and methods for delivering therapeutic gas to patients