Session-by-session adjustment of a device for treating sleep disordered breathing

• US 9,682,206 B2
• Filed: 07/15/2014
• Issued: 06/20/2017
• Est. Priority Date: 02/11/2004
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: Farrugia, Steven Paul
• Primary Examiner(s): MATTER, KRISTEN CLARETTE
• Application Number:
  US14/331,399
• Publication Number:
  US 20140318543A1
• Time in Patent Office: 1,071 Days
• Field of Search: 12820423
• CPC Class Codes: A61B 5/087 Measuring breath flow
• CPC Class Codes: A61B 5/4818 Sleep apnoea
• CPC Class Codes: A61M 16/0003 Accessories therefor, e.g. sensors, vibrators, negative pressure
• CPC Class Codes: A61M 16/0069 the speed thereof being controlled by respiratory parameters, e.g. by inhalation
• CPC Class Codes: A61M 16/024 including calculation means, e.g. using a processor
• CPC Class Codes: A61M 2016/0021 with a proportional output signal, e.g. from a thermistor
• CPC Class Codes: A61M 2016/0039 in the inspiratory circuit
• CPC Class Codes: A61M 2205/3365 Rotational speed
• CPC Class Codes: A61M 2205/50 with microprocessors or computers

Abstract

Methods and apparatus provide positive airway pressure. They may include a blower configured to provide pressurized air to a patient interface and a controller. The controller can be configured to control an air pressure of the pressurized air provided by the blower during a first treatment session. The controller can be configured to detect sleep disordered breathing (SDB) events during the first treatment session. The controller can be configured to adjust the air pressure in response to the detected SDB events during the first treatment session. The controller can be configured to determine a first therapeutic pressure treatment level based on the SDB events detected during the first treatment session. The controller can be configured to maintain the air pressure at the first therapeutic pressure treatment level during a second treatment session.

Claims

1. An apparatus for providing positive airway pressure, comprising:

a blower configured to provide pressurized air to a patient interface; and

a controller configured to;

control an air pressure of the pressurized air provided by the blower during a first treatment session;

detect sleep disordered breathing (SDB) events during the first treatment session;

adjust the air pressure in response to the detected SDB events during the first treatment session;

determine a first therapeutic pressure treatment level based on the SDB events detected during the first treatment session; and

maintain the air pressure at the first therapeutic pressure treatment level during a second treatment session.

2. The apparatus of claim 1, wherein the controller is configured to detect occurrence of SDB events during the second treatment session.

3. The apparatus of claim 2, wherein the controller is configured to determine a second therapeutic pressure treatment level at which the air pressure is to be maintained during a third treatment session based on the SDB events detected during the second treatment session.

4. The apparatus of claim 3, wherein the controller is configured to repeat determining a therapeutic pressure treatment level periodically for further treatment sessions based on the SDB events detected during previous treatment sessions.

5. The apparatus of claim 4, wherein the repeat is on a nightly basis.

6. The apparatus of claim 4, wherein the repeat determining occurs before each treatment session.

7. The apparatus of claim 3, wherein the second and third treatment sessions are successive sessions.

8. The apparatus of claim 3, wherein the controller is configured to determine the first and/or the second therapeutic pressure treatment level by comparing a total number of the SDB events detected with a threshold.

9. The apparatus of claim 8, wherein the second therapeutic pressure treatment level is identical to the first therapeutic pressure treatment level when the total number of the detected SDB events is less than the threshold.

10. The apparatus of claim 8, wherein the second therapeutic pressure treatment level is less than the first therapeutic pressure treatment level when the total number of the detected SDB events is less than the threshold.

11. The apparatus of claim 8, wherein the second therapeutic pressure treatment level is greater than the first therapeutic pressure treatment level when the total number of the detected SDB events is equal to or greater than the threshold.

12. The apparatus of claim 1, wherein the first treatment session is an initial treatment session.

13. The apparatus of claim 1, wherein the SDB events include apnea and hypopnea events.

14. The apparatus of claim 1, wherein the controller is further configured to store the detected SDB events.

15. The apparatus of claim 1, wherein the controller is configured to access an index of the detected SDB events from the first treatment session by checking a date of the index of the detected SDB events in relation to a clock.

16. The apparatus of claim 1, wherein the first treatment session comprises at least one sleep session and the second treatment session comprises a different sleep session.

17. A method for controlling an apparatus that provides positive airway pressure, comprising:

controlling with a processor setting of a blower to provide air at an air pressure during a first treatment session, the blower configured to provide pressurized air to a patient interface;

detecting with the processor sleep disordered breathing (SDB) events during the first treatment session;

adjusting with the processor the air pressure in response to the detected SDB events during the first treatment session;

determining with the processor a first therapeutic pressure treatment level based on the SDB events detected during the first treatment session; and

maintaining with the processor control of the air pressure of the blower at the first therapeutic pressure treatment level during a second treatment session.

18. The method of claim 17, further comprising detecting with the processor occurrence of SDB events during the second treatment session.

19. The method of claim 18, further comprising determining with the processor a second therapeutic pressure treatment level at which the air pressure is to be maintained during a third treatment session based on the SDB events detected during the second treatment session.

20. The method of claim 19, further comprising with the processor repeating determining a therapeutic pressure treatment level periodically for further treatment sessions based on the SDB events detected during previous treatment sessions.

21. The method of claim 20, wherein the repeating is on a nightly basis.

22. The method of claim 20, wherein the repeat determining occurs before each treatment session.

23. The method of claim 19, wherein the second and third treatment sessions are successive sessions.

24. The method of claim 19, wherein the processor determines the first and/or the second therapeutic pressure treatment level by comparing a total number of the SDB events detected with a threshold.

25. The method of claim 24, wherein the second therapeutic pressure treatment level is identical to the first therapeutic pressure treatment level when the total number of the detected SDB events is less than the threshold.

26. The method of claim 24, wherein the second therapeutic pressure treatment level is less than the first therapeutic pressure treatment level, when the total number of the detected SDB events is less than the threshold.

27. The method of claim 24, wherein the second therapeutic pressure treatment level is greater than the first therapeutic pressure treatment level when the total number of the detected SDB events is equal to or greater than the threshold.

28. The method of claim 17, wherein the first treatment session is an initial treatment session.

29. The method of claim 17, wherein the SDB events include apnea and hypopnea events.

30. The method of claim 17, further comprising storing the detected SDB events with the processor.

31. The method of claim 17, further comprising accessing with the processor an index of the detected SDB events from the first treatment session by checking a date of the index of the detected SDB events in relation to a clock.

32. The method of claim 17, wherein the first treatment session comprises at least one sleep session and the second treatment session comprises a different sleep session.