News Column

Patent Issued for System and Method of Preventing the Delivery of Hypoxic Gases to a Patient

July 22, 2014



By a News Reporter-Staff News Editor at Life Science Weekly -- A patent by the inventor Tham, Robert Q. (Middleton, WI), filed on January 10, 2011, was published online on July 8, 2014, according to news reporting originating from Alexandria, Virginia, by NewsRx correspondents (see also General Electric Company).

Patent number 8770192 is assigned to General Electric Company (Schenectady, NY).

The following quote was obtained by the news editors from the background information supplied by the inventors: "The present disclosure is related to the field of mechanical ventilation. More specifically, the current disclosure is related to the prevention of the delivery of hypoxic gases to a patient.

"Known guards against the delivery of hypoxic gases are based upon minimum concentration settings to ensure the addition of adequate fresh gas oxygen to a breathing circuit. Such a minimum concentration setting is maintained with a mechanical or equivalent link between the gas flow settings of the constituent gases of the delivered fresh gas. Such linkages ensure that the resulting mixture of fresh gas maintains a required minimum oxygen concentration.

"During some mechanical ventilator operational settings, particularly low flow mechanical ventilator operation, hypoxic gases can still be delivered to a patient, even when known hypoxic guards register that the minimum oxygen concentration for fresh gas flows has been met."

In addition to the background information obtained for this patent, NewsRx journalists also obtained the inventor's summary information for this patent: "A system for preventing the delivery of hypoxic gases during respiratory support of a patient includes a breathing circuit. A fresh gas manifold is pneumatically connected to the breathing circuit. A mechanical ventilator is pneumatically connected to the breathing circuit. A digital signal processor is communicatively connected to an input device, the fresh gas manifold, and the mechanical ventilator. The digital signal processor receives at least one ventilation parameter value, calculates a predicted oxygen concentration delivered to the patient, and compares the predicted oxygen concentration to a predetermined minimum oxygen requirement threshold of the patient. The digital signal processor accepts the at least one ventilation parameter value if the predicted oxygen concentration is above the threshold. The digital signal processor rejects the at least one ventilation parameter value if the oxygen concentration is below the predetermined minimum oxygen requirement threshold.

"A low-flow ventilation system that provides repeating breaths of respiratory support to a patient while preventing the delivery of hypoxic gases to the patient includes a breathing circuit with a patient connection configured to deliver the respiratory support to the patient. An input device is operable by a clinician to input at least one ventilation parameter value. A fresh gas manifold is pneumatically connected to the breathing circuit. The fresh gas manifold is configured to provide at least oxygen and a balance gas to the breathing circuit. A digital signal processor is communicatively connected to the input device and the fresh gas manifold. The digital signal processor receives the at least one ventilation parameter value, calculates a predicted oxygen concentration delivered to the patient and compares the predicted oxygen concentration to the minimum oxygen threshold of the patient. The digital signal processor accepts the at least one ventilation parameter value if the predicted oxygen concentration is above the minimum oxygen threshold. If the predicted oxygen concentration is below the predetermined minimum oxygen threshold, the digital signal processor calculates a value for at least one additional parameter such that the predicted oxygen concentration is above the predetermined minimum oxygen threshold. The digital signal processor accepts the at least one ventilation parameter value and at least one additional parameter value.

"A method of preventing the delivery of hypoxic gases to a patient includes providing ventilatory support to the patient through a breathing circuit pneumatically connected to a mechanical ventilator. A digital signal processor receives a ventilation parameter value from an input device connected to the digital signal processor. The digital signal processor calculates a predicted oxygen concentration delivered to the patient based upon the ventilation parameter value. The digital signal processor compares the predicted oxygen concentration to a predetermined hypoxic concentration threshold. The digital signal processor accepts the ventilation parameter if predicted oxygen concentration is above the predetermined hypoxic concentration threshold. The digital signal processor rejects the ventilation parameter value if the predicted oxygen concentration is below the predetermined hypoxic concentration threshold."

URL and more information on this patent, see: Tham, Robert Q.. System and Method of Preventing the Delivery of Hypoxic Gases to a Patient. U.S. Patent Number 8770192, filed January 10, 2011, and published online on July 8, 2014. Patent URL: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=%2Fnetahtml%2FPTO%2Fsrchnum.htm&r=1&f=G&l=50&s1=8770192.PN.&OS=PN/8770192RS=PN/8770192

Keywords for this news article include: Chalcogens, General Electric Company.

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


For more stories covering the world of technology, please see HispanicBusiness' Tech Channel



Source: Life Science Weekly


Story Tools






HispanicBusiness.com Facebook Linkedin Twitter RSS Feed Email Alerts & Newsletters