Control of respiratory oxygen delivery
AssigneeMinnesota Innovative Technologies & Instruments Corporation
InventorsMatthew Schmidt, John Buan, Catherine Nordman
Life of this patent
Estimating the term…
Abstract
Methods and systems for supplying respiratory oxygen to users when the users are inhaling are disclosed. The methods and systems may rely on delivery devices that are selectively placed in fluid communication with either a respiration sensor or a source of oxygen. The methods and systems may actively monitor for exhalations, as well as monitor for oxygen in the oxygen source. The respiration sensor may preferably be a flow sensor.
Claims28
A method of controlling oxygen delivery comprising:
- continuously measuring blood oxygen content of a patient to obtain a measured blood oxygen content level;
- delivering oxygen from an oxygen source to the patient if the measured blood oxygen content level is below a desired value;
- restricting the delivery of oxygen to the patient if the measured blood oxygen content level of the patient is above the desired value;
- determining if the measured blood oxygen content level is invalid;
- and
- delivering a default amount of oxygen to the patient if the measured blood oxygen content level is invalid.
A method of controlling oxygen delivery comprising:
- continuously measuring blood oxygen content of a patient to obtain a measured blood oxygen content level;
- delivering a variable dose of oxygen from an oxygen source to the patient, wherein the variable dose is at least partially determined based on the measured blood oxygen content level;
- determining if the measured blood oxygen content level is invalid;
- and
- delivering a default amount of oxygen to the patient if the measured blood oxygen content level is invalid.
A method of controlling oxygen delivery comprising:
- continuously measuring blood oxygen content of a patient to obtain a measured blood oxygen content level;
- delivering a variable dose of oxygen from an oxygen source to the patient, wherein the variable dose is at least partially determined based on the measured blood oxygen content level;
- determining if the measured blood oxygen content level is invalid;
- and
- replacing the invalid measured blood oxygen content level with a value based on a recent trend in blood oxygen content level.
A system for delivering respiratory oxygen to a patient, the system comprising:
- a blood oxygen content level sensor;
- a oxygen source;
- a valve in fluid communication with the oxygen source;
- a controller capable of operating the valve, the controller restricting oxygen flow through the valve when the blood oxygen content level measured by the blood oxygen content level sensor is above a desired value;
- and
- means for determining when the blood oxygen content level measured by the blood oxygen content level sensor is invalid, wherein the controller operates the valve to deliver a default amount of oxygen to the patient when the measured blood oxygen content is invalid.
Dependencies are inferred from the claim text.