System and method of administering a pharmaceutical gas to a patient
First Claim
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1. A nitric oxide delivery system comprising:
- an inlet to connect to a source of pharmaceutical gas comprising nitric oxide;
an outlet to connect to a device that introduces the pharmaceutical gas to a patient;
a low flow valve in fluid communication with the inlet and outlet, wherein the low flow valve delivers the pharmaceutical gas at a first flow rate;
a high flow valve in fluid communication with the inlet and outlet and in parallel to the low flow valve, wherein the high flow valve delivers the pharmaceutical gas at a second flow rate that is higher than the first flow rate; and
a gas control system that delivers a pulse of the pharmaceutical gas through one or more of the low flow valve and the high flow valve wherein the control system delivers the pulse of pharmaceutical gas during the first half of the patient'"'"'s inspiratory cycle.
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Abstract
Described are methods and systems for delivering pharmaceutical gas to a patient. The methods and systems utilize a high flow valve and a low flow valve in parallel flow paths. The pharmaceutical gas may be provided as a pulse during the first half of the patient'"'"'s inspiratory cycle.
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Citations
17 Claims
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1. A nitric oxide delivery system comprising:
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an inlet to connect to a source of pharmaceutical gas comprising nitric oxide; an outlet to connect to a device that introduces the pharmaceutical gas to a patient; a low flow valve in fluid communication with the inlet and outlet, wherein the low flow valve delivers the pharmaceutical gas at a first flow rate; a high flow valve in fluid communication with the inlet and outlet and in parallel to the low flow valve, wherein the high flow valve delivers the pharmaceutical gas at a second flow rate that is higher than the first flow rate; and a gas control system that delivers a pulse of the pharmaceutical gas through one or more of the low flow valve and the high flow valve wherein the control system delivers the pulse of pharmaceutical gas during the first half of the patient'"'"'s inspiratory cycle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of administering a pharmaceutical gas comprising nitric oxide to a patient, the method comprising:
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providing a nitric oxide delivery system having a low flow valve and a high flow valve in parallel flow paths, wherein the high flow valve delivers the pharmaceutical gas at a flow rate higher than a flow rate of the low flow valve; sensing the beginning of patient inspiration; and delivering a pulse of pharmaceutical gas comprising nitric oxide to the patient during inspiration through one or more of the low flow valve and the high flow valve. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification