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System and method of controlling the delivery of medical gases to a patient

  • US 10,398,870 B2
  • Filed: 11/24/2015
  • Issued: 09/03/2019
  • Est. Priority Date: 01/10/2011
  • Status: Active Grant
First Claim
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1. A system for controlling the delivery of medical gases to a patient, the system comprising:

  • a breathing circuit including a patient connection;

    a mixer pneumatically connected to the breathing circuit, the mixer receives at least oxygen and a balance gas and provides a combined gas comprising at least oxygen and the balance gas to the breathing circuit;

    a digital signal processor communicatively connected to the mixer, the digital signal processor receives at least one ventilation parameter value change, calculates a fresh oxygen flow rate into the breathing circuit and a total fresh gas flow rate into the breathing circuit with the at least one ventilation parameter value, and calculates a reference oxygen flow rate representative of a predetermined oxygen concentration delivered to the patient with at least the total fresh gas flow rate; and

    a graphical display communicatively connected to the digital signal processor, wherein the graphical display presents the calculated fresh oxygen flow rate, the total fresh gas flow rate, and the reference oxygen flow rate.

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