Methods and apparatus for providing ventilation to a patient

Patent metadata

Field	Value
Publication number	US-10668237-B2
Application number	US-201715430742-A
Country	US
Kind code	B2
Filing date	Feb 13, 2017
Priority date	Nov 7, 2011
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

An apparatus to generate pressure support ventilation and a method to control pressure support ventilation. The apparatus comprises: at least one sensor adapted to measure at least one respiratory parameter; a flow generator adapted for coupling with a patient respiratory interface; and a controller, coupled to the at least one sensor and the flow generator. The flow generator is configured to provide a flow of breathable gas for pressure support ventilation to the patient respiratory interface. The controller is configured to control the pressure support ventilation with the flow generator. The controller is further configured with a rest mode and an exercise mode. The rest mode comprises a first value set of control parameters for the pressure support ventilation and the exercise mode comprises a second value set of control parameters for the pressure support ventilation.

First claim

The invention claimed is:

1. An apparatus to generate pressure support ventilation for a patient, comprising: at least one sensor adapted to measure at least one respiratory parameter; a flow generator adapted for coupling with a patient respiratory interface, the flow generator configured to provide a flow of breathable gas for pressure support ventilation to the patient respiratory interface; and a controller, coupled to the at least one sensor and the flow generator, the controller configured to control the pressure support ventilation with the flow generator, the controller being further configured with a rest mode and an exercise mode, the rest mode comprising a first value set of control parameters for the pressure support ventilation and the exercise mode comprising a second value set of control parameters for the pressure support ventilation, wherein, for the exercise mode, the controller is responsive to a detection of change in location of the patient determined with a global positioning sensor.

2. The apparatus of claim 1 wherein the controller is configured to receive a user activated trigger stimulus, and, in response to the trigger stimulus to select the second value set of control parameters for the exercise mode.

3. The apparatus of claim 2 wherein, in response to the trigger stimulus, the controller sets a target respiratory control parameter as a function of a presently detected respiratory parameter sensed with the sensor.

4. The apparatus of claim 3 wherein the target respiratory control parameter is a target respiratory rate and the detected respiratory parameter is a measured respiratory rate.

5. The apparatus of claim 3 wherein the target respiratory control parameter is a target ventilation and the detected respiratory parameter is a measure of ventilation.

6. The apparatus of claim 5 wherein the target ventilation is a target tidal volume and the measure of ventilation is a measure of tidal volume.

7. The apparatus of claim 5 wherein the target ventilation is a target minute ventilation and the measure of ventilation is a measure of minute ventilation.

8. The apparatus of claim 5 wherein the second value set of control parameters comprises an increase in target values with respect to the first value set of control parameters.

9. The apparatus of claim 2 further comprising at least one user accessible button to activate the controller, the button being configured for actuating the trigger stimulus.

10. The apparatus of claim 2 , further comprising a diaphragm electromyogram sensor to activate the controller, the sensor being configured for actuating the trigger stimulus.

11. The apparatus of claim 2 , further comprising a vagal nerve sensor to activate the controller, the sensor being configured for actuating the trigger stimulus.

12. The apparatus of claim 2 , wherein the controller is further configured with a cool down mode, and to receive another user activated trigger stimulus to initiate the cool down mode, the cool down mode comprising a third value set of control parameters for the pressure support ventilation.

13. The apparatus of claim 12 wherein a value of the control parameters of the cool down mode is varied from a respective value of the control parameters of the exercise mode toward a respective value of the control parameters of the rest mode.

14. The apparatus of claim 13 wherein a value of the control parameters of the cool down mode is ramped from a respective value of the control parameters of the exercise mode toward a respective value of the control parameters of the rest mode.

15. The apparatus of claim 1 further comprising wherein, for the exercise mode, the controller is responsive to a detection of speed of movement of the patient.

16. The apparatus of claim 1 further comprising wherein, for the exercise mode, the controller is responsive to a detection of walking or running movement of the patient.

17. The apparatus of claim 1 further comprising wherein, for the exercise mode, the controller is responsive to a detection of exercise machine movement.

18. A method for control of pressure support ventilation for a patient, comprising: measuring at least one respiratory parameter with a sensor; generating pressure support ventilation with a flow generator adapted for coupling with a patient respiratory interface; and controlling, with a processor, the pressure support ventilation in a rest mode and an exercise mode, the rest mode comprising a first value set of control parameters for controlling the pressure support ventilation and the exercise mode comprising a second value set of control parameters for controlling the pressure support ventilation, wherein, for the exercise mode, the controlling is responsive to a detection of change in location of the patient determined with a global positioning sensor.

19. The method of claim 18 further comprising receiving a user activated trigger stimulus, and, in response to the trigger stimulus, selecting the second value set of control parameters for the exercise mode.

20. The method of claim 19 further comprising, in response to the trigger stimulus, setting a target respiratory control parameter as a function of a presently detected respiratory parameter sensed with the sensor.

21. The method of claim 20 wherein the target respiratory control parameter is a target respiratory rate and the detected respiratory parameter is a measured respiratory rate.

22. The method of claim 20 wherein the target respiratory control parameter is a target ventilation and the detected respiratory parameter is a measure of ventilation.

23. The method of claim 22 wherein the target ventilation is a target tidal volume and the measure of ventilation is a measure of tidal volume.

24. The method of claim 22 wherein the target ventilation is a target minute ventilation and the measure of ventilation is a measure of minute ventilation.

25. The method of claim 22 wherein the second set of control parameters comprises an increase in target values with respect to the first value set of control parameters.

26. The method of claim 19 , wherein a user accessible button actuates the trigger stimulus.

27. The method of claim 19 , wherein a diaphragm electromyogram sensor actuates the trigger stimulus.

28. The method of claim 19 , wherein a vagal nerve sensor actuates the trigger stimulus.

29. The method of claim 19 , further comprising controlling pressure support ventilation in a cool down mode in response to receiving another user activated trigger stimulus, the cool down mode comprising a third value set of control parameters for the pressure support ventilation.

30. The method of claim 29 wherein a value of the control parameters of the cool down mode is varied from a respective value of the control parameters of the exercise mode toward a respective value of the control parameters of the rest mode.

31. The method of claim 29 wherein a value of the control parameters of the cool down mode is ramped from a respective value of the control parameters of the exercise mode toward a respective value of the control parameters of the rest mode.

32. The method of claim 18 further comprising wherein, for the exercise mode, the controlling is responsive to a detection of speed of movement of the patient.

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Assignees

• ResMed Pty Ltd

Inventors

• Schindhelm Klaus Henry
• Malouf Gordon Joseph
• Farrugia Steven Paul
• Dennis Clancy John
• Berthon-Jones Michael
• Bassin David John
• Teschler Helmut

Classifications

• A61M2205/502

  User interfaces, e.g. screens or keyboards · CPC title

• A61B5/024

  Measuring pulse rate or heart rate · CPC title

• A61M16/024

  including calculation means, e.g. using a processor · CPC title

• A61B5/085

  Measuring impedance of respiratory organs or lung elasticity · CPC title

• A61M16/16

  Devices to humidify the respiration air {(A61M16/1045 takes precedence)} · CPC title