Methods and apparatus for providing ventilation to a patient

Patent metadata

Field	Value
Publication number	US-2017333652-A1
Application number	US-201715430742-A
Country	US
Kind code	A1
Filing date	Feb 13, 2017
Priority date	Nov 7, 2011
Publication date	Nov 23, 2017
Grant date	—

Abstract

The present technology relates to methods and apparatus to provide ventilation to patients. In particular, the present technology relates to changing ventilator parameters to match changing patient metabolic demand.

First claim

1 - 50 . (canceled)

51 . An apparatus to generate pressure support ventilation, 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.

52 . The apparatus of claim 51 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.

53 . The apparatus of claim 52 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.

54 . The apparatus of claim 53 wherein the target respiratory control parameter is a target respiratory rate and the detected respiratory parameter is a measured respiratory rate.

55 . The apparatus of claim 53 wherein the target respiratory control parameter is a target ventilation and the detected respiratory parameter is a measure of ventilation.

56 . The apparatus of claim 55 wherein the target ventilation is a target tidal volume and the measure of ventilation is a measure of tidal volume.

57 . The apparatus of claim 55 wherein the target ventilation is a target minute ventilation and the measure of ventilation is a measure of minute ventilation.

58 . The apparatus of claim 55 wherein the second value set of control parameters comprises an increase in target values with respect to the first value set of control parameters.

59 . The apparatus of claim 52 further comprising at least one user accessible button to activate the controller, the button being configured for actuating the trigger stimulus.

60 . The apparatus of claim 52 , further comprising a diaphragm electromyogram sensor to activate the controller, the sensor being configured for actuating the trigger stimulus.

61 . The apparatus of claim 52 , further comprising a vagal nerve sensor to activate the controller, the sensor being configured for actuating the trigger stimulus.

62 . The apparatus of claim 51 , 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.

63 . The apparatus of claim 52 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.

64 . The apparatus of claim 63 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.

65 . A method for control of pressure support ventilation, 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.

66 . The method of claim 65 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.

67 . The method of claim 66 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.

68 . The method of claim 67 wherein the target respiratory control parameter is a target respiratory rate and the detected respiratory parameter is a measured respiratory rate.

69 . The method of claim 67 wherein the target respiratory control parameter is a target ventilation and the detected respiratory parameter is a measure of ventilation.

70 . The method of claim 69 wherein the target ventilation is a target tidal volume and the measure of ventilation is a measure of tidal volume.

71 . The method of claim 69 wherein the target ventilation is a target minute ventilation and the measure of ventilation is a measure of minute ventilation.

72 . The method of claim 69 wherein the second set of control parameters comprises an increase in target values with respect to the first value set of control parameters.

73 . The method of claim 66 , wherein a user accessible button actuates the trigger stimulus.

74 . The method of claim 66 , wherein a diaphragm electromyogram sensor actuates the trigger stimulus.

75 . The method of claim 66 , wherein a vagal nerve sensor actuates the trigger stimulus.

76 . The method of claim 66 , 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.

77 . The method of claim 76 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.

78 . The method of claim 76 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.

Assignees

• Resmed Ltd

Inventors

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

Classifications

• A61B5/087

  Measuring breath flow · CPC title

• A61B5/14551

  for measuring blood gases · CPC title

• A61M16/107

  in the inspiratory path · CPC title

• A61M16/1075

  by influencing the temperature (A61M16/1045 takes precedence) · CPC title

• A61B5/0205

  Simultaneously evaluating both cardiovascular conditions and different types of body conditions, e.g. heart and respiratory condition · CPC title