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US 10,894,140 B2Granted
Device and method for diffusing high concentration NO with inhalation therapy gas
AssigneeMallinckrodt Hospital Products IP Unlimited Company
InventorsJohn C. Falligant, Craig R. Tolmie
Life of this patent
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Abstract
Systems and methods of the present invention can enable high concentration NO to be delivered into ventilator breathing circuits, via a diffusing device, without generating undesirably large amounts of NO2.
Claims26
A diffusing device for injecting a high concentration gas into a transverse gas stream, the diffusion device comprising:
- a body comprising a wall having a thickness, an outer surface, and an inner surface surrounding a hollow internal region;
- a projection extending from the inner surface of the body and into the hollow internal region;
- and
- an injection channel passing through the wall and projection to an injection port such that the injection port injects the high concentration gas into the transverse gas stream at a distance from the inner surface of the body, wherein the injection port has an outlet recessed from a center of the hollow internal region, and wherein an orifice is located within the flow path of the injection channel and injection port, and the orifice size provides a ratio of the velocity of the transverse gas and the velocity of the high concentration gas, wherein the ratio is less than 2:1.
1 more element
A method of diffusing a high concentration gas into a transverse gas stream, comprising:
- passing at least a portion of a first gas through a hollow internal region of a body having an inner surface surrounding the hollow internal region;
- and
- passing a second gas stream through an injection channel to an injection port projecting into the hollow internal region of the body, wherein the second gas stream enters and at least partially diffuses with the first gas stream within the hollow internal region,
- wherein the first gas stream has a first velocity and the second gas stream has a second velocity, and the ratio of the first velocity to the second velocity is less than 2:1.
1 more element
A method of diffusing a high concentration NO-containing gas into a transverse oxygen-containing gas stream, the method comprising:
- receiving a dose of NO from a user;
- receiving a first gas stream comprising oxygen through a hollow internal region of a body having an inner surface surrounding the hollow internal region;
- and
- passing a second gas stream comprising NO through an injection channel to an injection port projecting into the hollow internal region of the body, wherein the second gas stream enters and at least partially diffuses with the first gas stream within the hollow internal region, wherein the injection port has an outlet recessed from a center of the hollow internal region and wherein an orifice is located within the flow path of the injection channel and injection port, and the orifice size provides a ratio of the velocity of the first gas and the velocity of the second gas, wherein the ratio is less than 2:1.
1 more element
Dependencies are inferred from the claim text.