Conversion of nitrogen dioxide (NO2) to nitric oxide (NO)
First Claim
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1. An apparatus for generating therapeutic gas including nitric oxide comprising:
- a first receptacle including an inlet, an outlet, and a surface-active material coated with an antioxidant, wherein the receptacle is configured to pass a flow of gaseous nitrogen dioxide in contact with the surface-active material to convert the gaseous nitrogen dioxide to nitric oxide at ambient temperature;
a second receptacle including an inlet, an outlet, and a surface-active material coated with an antioxidant, wherein the receptacle is configured to pass the flow of gaseous nitrogen dioxide in contact with the surface-active material to convert the gaseous nitrogen dioxide to nitric oxide at ambient temperature; and
a switching valve, wherein the position of the switching valve creates a fluid connection to the first receptacle inlet or the second receptacle inlet.
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Abstract
A nitric oxide delivery system, which includes a gas bottle having nitrogen dioxide in air, converts nitrogen dioxide to nitric oxide and employs a surface-active material, such as silica gel, coated with an aqueous solution of antioxidant, such as ascorbic acid. A nitric oxide delivery system may be used to generate therapeutic gas including nitric oxide for use in delivering the therapeutic gas to a mammal.
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Citations
20 Claims
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1. An apparatus for generating therapeutic gas including nitric oxide comprising:
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a first receptacle including an inlet, an outlet, and a surface-active material coated with an antioxidant, wherein the receptacle is configured to pass a flow of gaseous nitrogen dioxide in contact with the surface-active material to convert the gaseous nitrogen dioxide to nitric oxide at ambient temperature; a second receptacle including an inlet, an outlet, and a surface-active material coated with an antioxidant, wherein the receptacle is configured to pass the flow of gaseous nitrogen dioxide in contact with the surface-active material to convert the gaseous nitrogen dioxide to nitric oxide at ambient temperature; and a switching valve, wherein the position of the switching valve creates a fluid connection to the first receptacle inlet or the second receptacle inlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for delivering therapeutic nitric oxide to a mammal comprising:
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diffusing nitric oxide into a gas flow; exposing the nitric oxide to a surface-active material coated with an antioxidant to convert any nitrogen dioxide formed to nitric oxide; and transporting the nitric oxide in a therapeutic amount to a mammal. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for delivering therapeutic nitric oxide to a mammal comprising:
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diffusing nitric oxide into a gas flow; exposing the nitric oxide to a surface-active material coated with reducing agent to convert any nitrogen dioxide formed to nitric oxide; and transporting the nitric oxide in a therapeutic amount to a mammal.
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19. An apparatus for generating a therapeutic gas including nitric oxide for use in delivering the therapeutic gas to a mammal comprising:
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a gas bottle having nitrogen dioxide and capable of providing a flow of gaseous nitrogen dioxide; and
a receptacle including an inlet, an outlet, and a surface-active material coated with a reducing agent,wherein the inlet is configured to receive the flow from the gas bottle and fluidly communicate the flow to the outlet through the surface-active material to convert the gaseous nitrogen dioxide to nitric oxide at ambient temperature, wherein the receptacle is configured to attach to the gas bottle. - View Dependent Claims (20)
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Specification