Conversion of nitrogen dioxide (NO 2 ) to nitric oxide (NO)
First Claim
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1. A method of providing a therapeutic gas including nitric oxide to a mammal comprising:
- connecting a permeation tube to a source of nitrogen dioxide via a diffusion cell;
connecting a receptacle to the permeation tube, the receptacle including an inlet, an outlet, and a surface-active material including an antioxidant, wherein the inlet is configured to receive the flow of nitrogen dioxide from the permeation tube;
diffusing gaseous nitrogen dioxide from the source of nitrogen dioxide into an air flow;
communicating the air flow to the outlet through the surface-active material; and
converting the gaseous nitrogen dioxide to nitric oxide at ambient temperature.
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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.
71 Citations
20 Claims
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1. A method of providing a therapeutic gas including nitric oxide to a mammal comprising:
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connecting a permeation tube to a source of nitrogen dioxide via a diffusion cell; connecting a receptacle to the permeation tube, the receptacle including an inlet, an outlet, and a surface-active material including an antioxidant, wherein the inlet is configured to receive the flow of nitrogen dioxide from the permeation tube; diffusing gaseous nitrogen dioxide from the source of nitrogen dioxide into an air flow; communicating the air flow to the outlet through the surface-active material; and converting the gaseous nitrogen dioxide to nitric oxide at ambient temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of providing a therapeutic gas including nitric oxide to a mammal comprising:
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connecting a pressure regulator to a source of nitrogen dioxide; attaching a receptacle to the pressure regulator, the receptacle including an inlet, an outlet, and a surface-active material coated with an antioxidant, wherein the inlet is configured to receive the flow of nitrogen dioxide from the permeation tube; communicating the flow to the outlet through the surface-active material; converting the gaseous nitrogen dioxide to nitric oxide at ambient temperature; and transporting the therapeutic gas to a mammal. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification