Control of supplemental respiratory oxygen
First Claim
1. A system for delivering supplemental oxygen to a patient, the system comprising:
- a blood oxygen content level sensor;
a source of supplemental oxygen;
an inhalation sensor;
a supplemental oxygen delivery device; and
valving in fluid communication with the supplemental oxygen delivery device, the source of supplemental oxygen, and the inhalation sensor;
wherein the valving places the supplemental oxygen delivery device in fluid communication with only one of the inhalation sensor and the source of supplemental oxygen at any given time.
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Accused Products
Abstract
Methods and systems for supplying supplemental oxygen to patients for use in sub-acute care which maintains healthy blood oxygen content in the patients by controlled dosing of oxygen with a measured response to the patient'"'"'s actual blood oxygen content are disclosed. The dosing can be provided by simple ON/OFF control over the delivery of oxygen or the amount of oxygen delivered to the patient with each inhalation can be varied in response to the patient'"'"'s need as determined by a more sophisticated control scheme, such as a PID loop control algorithm, that utilizes the difference between the patient'"'"'s actual blood oxygen content and a target blood oxygen content and/or trends in the blood oxygen content. The systems and methods are particularly directed at patients receiving supplemental oxygen in a sub-acute care environment.
955 Citations
35 Claims
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1. A system for delivering supplemental oxygen to a patient, the system comprising:
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a blood oxygen content level sensor; a source of supplemental oxygen; an inhalation sensor; a supplemental oxygen delivery device; and valving in fluid communication with the supplemental oxygen delivery device, the source of supplemental oxygen, and the inhalation sensor;
wherein the valving places the supplemental oxygen delivery device in fluid communication with only one of the inhalation sensor and the source of supplemental oxygen at any given time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for delivering supplemental oxygen to a patient, the system comprising:
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a blood oxygen content level sensor; a source of supplemental oxygen; an inhalation sensor; a supplemental oxygen delivery device; and means for placing only one of the inhalation sensor and the source of supplemental oxygen in fluid communication with the supplemental oxygen delivery device at any given time. - View Dependent Claims (10, 11, 12)
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13. A system for delivering supplemental oxygen to a patient, the system comprising:
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a blood oxygen content level sensor; a source of supplemental oxygen; an inhalation sensor; and valving in fluid communication with respiratory flow of the patient, the source of supplemental oxygen, and the inhalation sensor;
wherein the valving places the respiratory flow of the patient in fluid communication with one of the inhalation sensor and the source of supplemental oxygen at any given time. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for delivering supplemental oxygen to a patient, the system comprising:
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a blood oxygen content level sensor; a source of supplemental oxygen; an inhalation sensor; and means for placing only one of the inhalation sensor and the source of supplemental oxygen in fluid communication with the respiratory flow of the patient at any given time. - View Dependent Claims (23, 24, 25, 26)
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27. A system for delivering supplemental oxygen to a patient, the system comprising:
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means for sensing blood oxygen content of the patient; a source of supplemental oxygen; means for sensing inhalation of the patient; and means for placing only one of the means for sensing inhalation and the source of supplemental oxygen in fluid communication with the respiratory flow of the patient at any given time.
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28. A system for delivering supplemental oxygen to a patient, the system comprising:
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means for sensing blood oxygen content of the patient; a source of supplemental oxygen; means for sensing inhalation of the patient; means for delivering supplemental oxygen to the patient; and means for placing only one of the means for sensing inhalation and the source of supplemental oxygen in fluid communication with the means for delivering supplemental oxygen at any given time.
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29. A demand delivery method for controlling the delivery of oxygen to a patient comprising:
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providing a sensor in fluid communication with the respiratory flow of a patient; monitoring the sensor to determine when the patient is inhaling; delivering oxygen to the patient when the patient is inhaling and after removing the sensor from fluid communication with the respiratory flow of the patient; placing the sensor back in fluid communication with the respiratory flow of the patient after delivering oxygen to the patient and monitoring the sensor to determine when the patient is exhaling; and restricting delivery of oxygen to the patient when the patient is exhaling.
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30. A method of controlling supplemental oxygen delivery during sub-acute care comprising:
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providing an inhalation sensor and a supplemental oxygen source; continuously measuring blood oxygen content of a patient to obtain a measured blood oxygen content level; placing the inhalation sensor in fluid communication with the respiratory flow of the patient; determining when the patient is inhaling; delivering supplemental oxygen from the supplemental oxygen source to the patient when the patient is inhaling; removing the inhalation sensor from fluid communication with the respiratory flow of the patient when delivering supplemental oxygen to the patient; and restricting the delivery of supplemental oxygen to the patient if the patient is not inhaling. - View Dependent Claims (31, 32, 33, 34, 35)
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Specification