Conversion of nitrogen dioxide (NO2) to nitric oxide (NO)
AssigneeVERO Biotech Inc.
InventorsDavid H. Fine, Gregory Vasquez, David P. Rounbehler
Life of this patent
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Abstract
Various systems, devices, NO2 absorbents, NO2 scavengers and NO2 recuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide.
Claims15
A method comprising:
- obtaining a sample of gas from a system for delivering nitric oxide to a patient, the sample of gas including nitric oxide, oxygen, and water vapor;
- diluting the sample of gas with air to reduce a humidity and a concentration of nitric oxide in the sample of gas;
- and
- measuring, after diluting the sample of gas, a concentration of nitric oxide and a concentration of nitrogen dioxide in the sample of gas with a gas analyzer.
The method of 1, wherein:
- the system for delivering nitric oxide to the patient includes a ventilator, a humidifier downstream of the ventilator, and a recuperator downstream of the humidifier;
- obtaining the sample of gas includes coupling the gas analyzer to the recuperator;
- and
- the sample of the gas is diluted after the sample of gas is obtained from the recuperator.
Dependencies are inferred from the claim text.