Oxygen delivery system for providing controlled flow of oxygen-enriched gas to a patient

Patent metadata

Field	Value
Publication number	US-11052213-B2
Application number	US-201816210924-A
Country	US
Kind code	B2
Filing date	Dec 5, 2018
Priority date	Dec 13, 2017
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

An oxygen delivery system provides controlled flow of oxygen-enriched gas to a patient. The system includes one or more sensors configured to measure respiration rate information and heart rate information of the patient. A computer system including one or more physical processors is operatively connected with the sensors. The physical processors are programmed with computer program instructions which, when executed cause the computer system to determine a metabolic oxygen consumption information of the patient from the respiration rate information and the heart rate information from the one or more sensors, and continuously adjust flow, volume and/or pressure of the oxygen-enriched gas delivered from an oxygen source of the oxygen delivery system to the patient based on the determined metabolic oxygen consumption information of the patient.

First claim

What is claimed is:

1. A non-invasive oxygen delivery system comprising:
an oxygen source configured for non-invasive oxygen-enriched gas delivery to a patient;
one or more sensors configured to generate output signals conveying information related to respiration rate, heart rate, and activity level of the patient; and
a computer system that comprises one or more physical processors operatively connected with the oxygen source and the one or more sensors, the one or more physical processors being programmed with computer program instructions which, when executed cause the computer system to:
determine respiration rate information of the patient, heart rate information of the patient, and activity level of the patient;
determine metabolic oxygen consumption information of the patient from the respiration rate information of the patient and the heart rate information of the patient; and
continuously adjust flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source to the patient based on the determined metabolic oxygen consumption information of the patient and the activity level of the patient.

2. The system of claim 1 , wherein the one or more sensors are further configured to generate output signals conveying information related to acceleration information of the patient and wherein the computer system is configured to determine the metabolic oxygen consumption information of the patient from the respiration rate information of the patient, the heart rate information of the patient and the acceleration information of the patient.

3. The system of claim 1 , wherein the computer system is configured to determine a beginning of an inspiration of a breath of the patient and a beginning of an expiration of the patient from the respiration rate information of the patient from the one or more sensors, and wherein the computer system is configured to increase the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient at the beginning of the inspiration of the breath of the patient and based on the determined metabolic oxygen consumption information of the patient and turn off the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient at the beginning of the expiration of the patient and based on the determined metabolic oxygen consumption information of the patient.

4. The system of claim 1 , wherein the computer system is configured to continuously adjust the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient based on a feedback signal generated by the computer system, wherein the feedback signal is generated such that the determined metabolic oxygen consumption information of the patient falls within a predetermined metabolic oxygen consumption range.

5. The system of claim 1 , wherein the computer system is configured to increase the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient based on an increase in the determined metabolic oxygen consumption information of the patient relative to a previously-determined metabolic oxygen consumption information of the patient.

6. The system of claim 1 , wherein the one or more physical processors are configured to estimate an amount of time before the oxygen source is empty based on the determined metabolic oxygen consumption information and the level of activity of the patient.

7. The system of claim 1 , wherein the non-invasive oxygen delivery system comprises an oxygen consumption indicator configured to provide an indication of the estimated time left before the oxygen source is empty.

8. A method for non-invasive oxygen delivery to a patient using a non-invasive oxygen delivery system, the method comprising:
delivering, with an oxygen source coupled to a non-invasive user interface, oxygen-enriched gas to the patient;
generating, with one or more sensors, output signals conveying information related to respiration rate, heart rate, and activity level of the patient;
determining, with one or more processors, respiration rate information of the patient, heart rate information of the patient, and activity level of the patient based on the output signals;
determining, with the one or more processors, metabolic oxygen consumption information of the patient from the respiration rate information of the patient and the heart rate information of the patient, the metabolic oxygen consumption being an amount of oxygen taken up and utilized by the patient's body; and
continuously adjusting, with the one or more processors, flow, volume and/or pressure of the oxygen-enriched gas delivered to the patient based on the determined metabolic oxygen consumption information of the patient and the activity level of the patient.

9. The method of claim 8 , further comprising:
generating, with the one or more sensors, acceleration information of the patient; and
determining, with the one or more processors, the metabolic oxygen consumption information of the patient from the respiration rate information of the patient, the heart rate information of the patient and the acceleration information of the patient.

10. The method of claim 8 , further comprising:
determining, with the one or more processors, a beginning of an inspiration of a breath of the patient and a beginning of an expiration of the patient from the respiration rate information of the patient from the one or more sensors,
increasing, with the one or more processors, the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient at the beginning of the inspiration of the breath of the patient and based on the determined metabolic oxygen consumption information of the patient and turning off the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient at the beginning of the expiration of the patient and based on the determined metabolic oxygen consumption information of the patient.

11. The method of claim 8 , further comprising:
continuously, with the one or more processors, adjusting the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient based on a feedback signal generated by the one or more processors, wherein the feedback signal is generated such that the determined metabolic oxygen consumption information of the patient falls within a predetermined metabolic oxygen consumption range.

12. The method of claim 8 , further comprising:
continuously adjusting, with the one or more processors, the flow, volume, and/or pressure of the oxygen-enriched gas delivered from the oxygen source of the oxygen delivery system to the patient based on an increase in the determined metabolic oxygen consumption information of the patient relative to a previously determined metabolic oxygen consumption information of the patient.

13. The method of claim 8 , further comprising:
estimating, with the one or more processors, an amount of time before the oxygen source is empty based on the determined metabolic oxygen consumption information and the level of activity of the patient.

14. The method of claim 8 , further comprising:
providing, with an oxygen consumption indicator, an indication of the estimated time left before the oxygen source is empty.

15. A non-invasive oxygen delivery system, the system comprising:
means for non-

Assignees

• Koninklijke Philips Nv

Inventors

• Romano Robert

Classifications

• A61B5/02416 Primary

  using photoplethysmograph signals, e.g. generated by infrared radiation (A61B5/14552 takes precedence) · CPC title

• A61M16/1005

  with O2 features or with parameter measurement · CPC title

• A61M16/202

  electrically actuated · CPC title

• A61B5/0833

  Measuring rate of oxygen consumption · CPC title

• A61M2230/63

  Motion, e.g. physical activity · CPC title