US-20260124415-A1 - Method and Apparatus for Monitoring Oxygen Devices

Abstract

Described herein are methods and devices for monitoring oxygen delivery to a patient using an oxygen supply system. The method includes receiving air flow pressure data, the air flow pressure data indicating pressure measured in a flow channel of a delivery device configured to be connected to an oxygen supply device for delivering oxygen to the patient in a predetermined time period; processing the air flow pressure data to determine one or more oxygen delivery states associated with the air flow pressure data; and monitoring oxygen delivery to the patient based upon the one or more oxygen delivery states.

Inventors

• Rupak Kharel
• Khaled Rabie
• Peter Gough
• Corrado Puntillo
• Richard Blackhurst
• Tom Liptrot

Assignees

• PURE O2 LTD

Dates

Publication Date

20260507

Application Date

20231003

Priority Date

20221003

Claims (20)

1. 1 . A method of monitoring oxygen delivery to a patient using an oxygen supply system, the method comprising: receiving air flow pressure data, the air flow pressure data indicating pressure measured in a flow channel of a delivery device configured to be connected to an oxygen supply device for delivering oxygen to the patient in a predetermined time period; processing the air flow pressure data to determine one or more oxygen delivery states associated with the air flow pressure data; and monitoring oxygen delivery to the patient based upon the one or more oxygen delivery states.
2. 2 . The method according to claim 1 , further comprising: determining, based on the one or more oxygen delivery states, whether the air flow pressure data is indicative of a breathing pattern.
3. 3 . The method according to claim 2 , further comprising determining, if the air flow pressure is not indicative of a breathing pattern, that the oxygen supply device is disconnected from the patient; and outputting a signal comprising a notification that the delivery device is disconnected from the patient.
4. 4 . The method according to claim 1 , wherein the delivery device is a nasal cannula configured to be attached to the nose of the patient.
5. 5 . The method according to claim 1 , wherein the delivery device comprises first and second flow channels; and wherein the oxygen supply device is configured to be connected to the first flow channel of the dual cannula, and wherein a pressure sensor configured to measure the air flow pressure data is connected to the second flow channel of the dual cannula.
6. 6 . The method according to claim 1 , wherein the delivery device comprises a first flow channel; and wherein the oxygen supply device is configured to be connected to the first flow channel, and wherein a pressure sensor configured to measure air flow pressure data is connected to the first flow channel.
7. 7 . The method according to claim 1 , processing the air flow pressure data comprises: providing the air flow pressure data as input to a machine leaning model; and receiving the one or more oxygen delivery states as output from the machine learning model.
8. 8 . The method according to claim 7 , wherein the machine learning model is a classifier.
9. 9 . The method according to claim 7 , wherein processing the air flow pressure data further comprising: sampling the air flow pressure data at a frequency in range of 2 Hz-10 Hz, or 4 Hz.
10. 10 . The method according to claim 9 , wherein a plurality of samples are grouped together in an air flow pressure data packet, and wherein the air flow pressure data packet is provided as the input to the machine learning model.
11. 11 . (canceled)
12. 12 . (canceled)
13. 13 . (canceled)
14. 14 . The method according to claim 1 , wherein the oxygen delivery states comprise one or more of delivery device connected, delivery device disconnected, oxygen supply device connected, oxygen supply device disconnected, normal patient breathing pattern, and abnormal patient breathing pattern.
15. 15 . (canceled)
16. 16 . The method according to claim 1 , further comprising receiving oxygen concentration data, the oxygen concentration data indicating an oxygen concentration in the delivery device.
17. 17 . The method according to claim 16 , further comprising processing the oxygen concentration data to determine the one or more oxygen delivery states associated with the air flow pressure data.
18. 18 . The method according to claim 1 , further comprising determining a signal associated with the oxygen supply device, and determining connection to the oxygen supply device based on the signal associated with the oxygen supply device.
19. 19 . The method according to claim 1 , wherein processing the air flow pressure data comprises processing the air flow pressure data by a machine learning model trained to analyse the air flow pressure data.
20. 20 . The method according to claim 19 , further comprising receiving oxygen concentration data, the oxygen concentration data indicating an oxygen concentration in the delivery device, wherein the machine learning model is further trained to analyse the oxygen concentration data.

Description

FIELD This description relates to systems, methods, and apparatus for oxygen provision and monitoring. Specifically it relates to monitoring oxygen delivery to a person, and/or monitoring properties of the delivery. BACKGROUND The treatment of many respiratory diseases with oxygen provision is widespread and increasing. In order to monitor the oxygen provision and patient safety, real-time monitoring of the oxygen supply is desirable. However, few technologies are currently available that enable such monitoring, and those technologies that are available are limited in their application. In applications where the provision requires the use of a mask or nasal cannula, oxygen provision at the patient location is often unchecked. Furthermore, in the case where the oxygen mask or the nasal cannula is accidentally disconnected during use, existing technologies do not currently offer a solution to detect this. The systems, apparatus, and methods described herein aim to improve aspects of oxygen delivery, and address at least some of the challenges set out herein. SUMMARY According to a first aspect of the present disclosure there is provided a method of monitoring oxygen delivery to a patient using an oxygen supply system. The method comprises receiving air flow pressure data in a predetermined time period. The air flow pressure data indicates a pressure measured in a flow channel of a delivery device configured to be connected to an oxygen supply device, wherein the oxygen supply device is configured to deliver oxygen to the patient. The air flow pressure data is processed to determine one or more oxygen delivery states associated with the air flow pressure data. Oxygen delivery to the patient is monitored based upon the one or more determined oxygen delivery states. Optionally, the method further comprises determining, based on the one or more oxygen delivery states, whether the air flow pressure data is indicative of a breathing pattern. Optionally, the method may further comprise determining, if the air flow pressure is not indicative of a breathing pattern, that the oxygen supply device is disconnected from the patient. In response to the determination that the delivery device is disconnected, a signal may be output comprising a notification that the delivery device is disconnected from the patient. Optionally, the delivery device may comprise a nasal cannula configured to be attached to the nose of the patient, e.g. through insertion of a prong of the cannula into a part of one or both nostrils of the patient. Alternatively, the delivery device may comprise a face mask configured to be placed over the mouth and/or nose of the patient. Optionally, the delivery device may comprise first and second flow channels. The oxygen supply device may be connected to the first flow channel. A pressure sensor configured to measure the air flow pressure data may be configured to be connected to the second flow channel. The first and second flow channels may combine inside the delivery device prior to the output of the delivery device, such that fluid can flow from both the first and second channels to the patient. A delivery device comprising first and second flow channels may be referred to as a dual cannula. Optionally, the delivery device may comprise a first flow channel. The oxygen supply device may be connected to the first flow channel. The pressure sensor configured to measure air flow pressure data may be configured to be connected to the first flow channel, for example via a branch connection (e.g. a T-branch connection). The first flow channel may be a single flow channel (i.e. no other fluid flow channels may be provided between the oxygen supply device and the patient). A delivery device comprising a single flow channel may be referred to as a single cannula. Optionally, processing the air flow pressure data may comprise denoising the received air flow pressure data. Optionally, denoising the air flow pressure data may comprise removing a high frequency component related to oxygen supplied by the oxygen supply device. Optionally, processing the air flow pressure data may further comprise determining at least one parameter from the air flow pressure data, the at least one parameter selected from the group consisting of: slope, amplitude, and frequency. The one or more oxygen delivery states may be determined based on the at least one parameter. Optionally, the oxygen delivery states may comprise one or more of: “delivery device connected”, “delivery device disconnected”, “oxygen supply device connected”, “oxygen supply device disconnected”, “normal patient breathing pattern”, and “abnormal patient breathing pattern”. Optionally, denoising the air flow pressure data may comprise processing the air flow pressure data based upon a threshold value. Optionally, the method may further comprise receiving oxygen concentration data. The oxygen concentration data may indicate an oxygen concentration in the delivery devic