APPARATUS AND METHOD FOR ADAPTIVE RAMPED CONTROL OF POSITIVE AIRWAY PRESSURE (PAP)

• US 20180071471A1
• Filed: 09/13/2017
• Published: 03/15/2018
• Est. Priority Date: 09/14/2016
• Status: Active Grant

• Current Assignee: ResMed Pty Ltd. (ResMed Incorporated)
• Original Assignee: Resmed Limited (ResMed Incorporated)
• Inventors: Kirollos, Mina Samir
• Granted Patent: US 11,103,661 B2
• Time in Patent Office: Days
• CPC Class Codes: A61M 16/0069 the speed thereof being controlled by respiratory parameters, e.g. by inhalation
• CPC Class Codes: A61M 16/026 specially adapted for predicting, e.g. for determining an information representative of a flow limitation during a ventilation cycle by using a root square technique or a regression analysis
• CPC Class Codes: A61M 2016/0027 pressure meter
• CPC Class Codes: A61M 2016/0036 in the breathing tube and used in both inspiratory and expiratory phase
• CPC Class Codes: A61M 2205/15 Detection of leaks
• CPC Class Codes: A61M 2205/3303 Using a biosensor
• CPC Class Codes: A61M 2205/3344 Measuring or controlling pressure at the body treatment site
• CPC Class Codes: A61M 2205/3365 Rotational speed
• CPC Class Codes: A61M 2205/3584 using modem, internet or bluetooth
• CPC Class Codes: A61M 2205/42 Reducing noise
• CPC Class Codes: A61M 2205/505 Touch-screens; Virtual keyboard or keypads; Virtual buttons; Soft keys; Mouse touches
• CPC Class Codes: A61M 2205/52 with memories providing a history of measured variating parameters of apparatus or patient

Abstract

Methods and/or apparatus automate setting of a pressure ramp to permit pressure to gradually arrive at a treatment pressure such as in the initial or pre-sleep stages of use of a respiratory therapy pressure device for treatment of a respiratory disorder during sleep (e.g., sleep disordered breathing). In an example, apparatus for treating a respiratory disorder may include a breathable gas pressure generating device. The apparatus may include a controller, including a processor(s). The controller may be configured to collect historic sleep onset parameter(s) concerning timing of a patient falling asleep. The apparatus may determine, based on the historic sleep onset parameter(s), a pre-sleep limit. The apparatus may determine a pre-sleep profile of pressure versus time having a duration spanning the pre-sleep limit and having a plurality of ramping sub-therapeutic pressures. The apparatus may control, upon initiation of treatment, setting of the pressure generating device according to the pre-sleep profile.

Claims

1. An apparatus for treating a respiratory disorder comprising:

a breathable gas pressure generating device, and

a controller, including at least one processor, the controller configured to;

collect one or more historic sleep onset parameters concerning timing of a patient falling asleep;

determine, based on the one or more historic sleep onset parameters, a pre-sleep limit;

determine a pre-sleep profile of pressure versus time having a duration spanning the pre-sleep limit and having a plurality of ramping sub-therapeutic pressures; and

control, upon initiation of treatment, setting of the breathable gas pressure generating device according to the pre-sleep profile of pressure versus time.

2. The apparatus according to claim 1, wherein the controller is configured to collect the one or more historic sleep onset parameters by:

detecting, with one or more sensors, sleep onset of the patient during use of the breathable gas pressure generating device; and

determining a length of time for the sleep onset of the patient.

3. The apparatus according to any one of claim 1, wherein the controller is configured to collect the one or more historic sleep onset parameters by receiving a sleep onset time at a user input device.

4. The apparatus according to claim 1, wherein the controller is configured to calculate the pre-sleep limit as a function of any one of:

a maximum of a plurality of the historic sleep onset parameters;

a mean of a plurality of the historic sleep onset parameters; and

a percentile of the one or more historic sleep onset parameters.

5. The apparatus according to claim 1, wherein the controller is configured to calculate the pre-sleep limit from a percentile of a plurality of the historic sleep onset parameters, and wherein the pre-sleep limit is calculated as a percentage of the percentile.

6. The apparatus according to claim 1, the controller is configured to collect a plurality of the historic sleep onset parameters according to a window timeframe comprising a number of treatment sessions.

7. The apparatus according to claim 6, wherein the window timeframe is a rolling window timeframe.

8. The apparatus according to claim 1, wherein the controller is further configured to set a default pre-sleep limit in an absence of a sufficient collection of one or more historic sleep onset parameters.

9. The apparatus according to claim 1, wherein the controller is configured to:

control a display to provide a prompt for input, the prompt for input including;

one or both of (a) at least one of the one or more historic sleep onset parameters, and (b) at least one calculated statistic concerning the one or more historic sleep onset parameters; and

determine the pre-sleep limit based on input received in response to the prompt.

10. The apparatus according to claim 1, wherein the pre-sleep profile starts delivered pressure at a first pressure and ends at a minimum therapeutic pressure, the minimum therapeutic pressure being higher than the first pressure.

11. A method for controlling a pressure treatment for a respiratory disorder comprising:

generating a flow of breathable gas at a pressure above atmospheric pressure with a pressure generating device, and

in one or more controllers;

collecting one or more historic sleep onset parameters concerning timing of a patient falling asleep;

determining, based on the one or more historic sleep onset parameters, a pre-sleep limit;

determining a pre-sleep profile of pressure versus time having a duration spanning the pre-sleep limit and having a plurality of ramping sub-therapeutic pressures; and

controlling, upon initiation of treatment, setting of the flow of breathable gas according to the pre-sleep profile of pressure versus time.

12. The method according to claim 11, further comprising in the one or more controllers, collecting the one or more historic sleep onset parameters by:

detecting, with one or more sensors, sleep onset of the patient during use of the breathable gas pressure generating device; and

determining a length of time for the sleep onset of the patient.

13. The method according to claim 11, wherein the collecting the one or more historic sleep onset parameters comprises receiving a sleep onset time at a user input device.

14. The method according to claim 11, further comprising, in one or more controllers, calculating the pre-sleep limit as a function of any one of:

a maximum of a plurality of the historic sleep onset parameters;

a mean of a plurality of the a historic sleep onset parameters; and

a percentile of the one or more historic sleep onset parameters.

15. The method according to claim 11, further comprising, in one or more controllers, calculating the pre-sleep limit from a percentile of a plurality of the historic sleep onset parameters, wherein the pre-sleep limit is calculated as a percentage of the percentile.

16. The method according to claim 11, further comprising, in one or more controllers, collecting a plurality of the historic sleep onset parameters according to a window timeframe comprising a number of treatment sessions.

17. The method according to claim 16, wherein the window timeframe is a rolling window timeframe.

18. The method according to claim 11, further comprising, in one or more controllers, setting a default pre-sleep limit in an absence of a sufficient collection of one or more historic sleep onset parameters.

19. The method according to claim 11, further comprising, in the one or more controllers:

controlling a display to provide a prompt for input, the prompt for input including;

one or both of (a) at least one of the one or more historic sleep onset parameters, and (b) at least one calculated statistic concerning the one or more historic sleep onset parameters; and

determining the pre-sleep limit based on input received in response to the prompt.

20. The method according to claim 11, wherein the pre-sleep profile starts delivered pressure at a first pressure and ends at a minimum therapeutic pressure, the minimum therapeutic pressure being higher than the first pressure.