Patent ID: 8770192

Claim:
A system for preventing the delivery of hypoxic gases during respiratory support of a patient, the system comprising: a breathing circuit including a patient connection configured to deliver respiratory support to the patient; an input device operable by a clinician to input at least one ventilation parameter value; a fresh gas manifold pneumatically connected to the breathing circuit, the fresh gas manifold configured to provide at least oxygen and a balance gas to the breathing circuit; a mechanical ventilator pneumatically connected to the breathing circuit, the mechanical ventilator configured to create fluid pressure waveforms within the breathing circuit to provide respiratory support to the patient; a digital signal processor communicatively connected to the input device, fresh gas manifold, and the mechanical ventilator, the digital signal processor receives the input at least one ventilation parameter value, calculates a predicted oxygen concentration delivered to the patient with the at least one ventilation parameter value, and compares the predicted oxygen concentration to a predetermined minimum oxygen requirement threshold of the patient; wherein if the predicted oxygen concentration is above the predetermined minimum oxygen requirement threshold, the digital signal processor accepts the at least one ventilation parameter value; and wherein if the predicted oxygen concentration is below the predetermined minimum oxygen requirement threshold, the digital signal processor rejects the at least one ventilation parameter value.