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Method And Apparatus For Oxygen Reprocessing Of Expiratory Gases In Mechanical Ventilation

  • US 20110209707A1
  • Filed: 02/26/2010
  • Published: 09/01/2011
  • Est. Priority Date: 02/26/2010
  • Status: Abandoned Application
First Claim
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1. A method executable on a computerized ventilator for oxygen reprocessing of expiratory gases during ventilation of a patient, comprising:

  • receiving filtered exhaled air at a carbon dioxide adsorber configured to selectively adsorb carbon dioxide;

    adsorbing carbon dioxide at the carbon dioxide adsorber from the filtered exhaled air creating product gas with increased oxygen concentration;

    receiving the product gas at an argon and nitrogen adsorber configured to selectively adsorb argon and nitrogen from the product gas;

    adsorbing argon and nitrogen from the product gas creating product gas with increased oxygen concentration;

    receiving the product gas at a threshold testing module, wherein the threshold testing module is configured to measure the oxygen concentration of the product gas;

    receiving the product gas at a blending module, wherein the blending module is configured to blend the product gas with room air and/or pure oxygen;

    receiving a specified oxygen concentration at the blending module;

    blending the product gas with the room air and/or the pure oxygen based on a blending algorithm, wherein the blending algorithm is based on the specified oxygen concentration; and

    providing the product gas for inspiration.

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