Systems, Methods, and/or Apparatuses for Non-Invasive Monitoring of Respiratory Parameters in Sleep Disordered Breathing
First Claim
1. An air delivery system, comprising:
- a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment;
a pulse oximeter configured to generate, during a treatment period, a patient effort signal for input to control operation of the flow generator; and
a controller configured to derive an estimated breath phase of the patient independent of measured flow, based at least in part on the patient effort signal.
2 Assignments
0 Petitions
Accused Products
Abstract
In certain example embodiments, an air delivery system includes a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment and a pulse oximeter. In certain example embodiments, the pulse oximeter is configured to determine, for example, a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator. Oximeter plethysmogram data may be used, for example, to determine estimated breath phase; sleep structure information; autonomic improvement in response to therapy; information relating to relative breathing effort, breathing frequency, and/or breathing phase; vasoconstrictive response, etc. Such data may be useful in diagnostic systems.
87 Citations
64 Claims
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1. An air delivery system, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; a pulse oximeter configured to generate, during a treatment period, a patient effort signal for input to control operation of the flow generator; and a controller configured to derive an estimated breath phase of the patient independent of measured flow, based at least in part on the patient effort signal. - View Dependent Claims (2, 3, 4, 5)
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6. A method for treating sleep disordered breathing, said method comprising:
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deriving a pulse oximeter signal from a patient; processing the pulse oximeter signal to generate a patient effort signal indicative of respiratory rate; and deriving an estimated breath phase of the patient independent of measured flow based at least in part on the patient effort signal. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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13. A respiratory effort monitoring apparatus, comprising:
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a pulse oximeter configured to derive a pulse oximeter signal; and a signal processor configured to receive the pulse oximeter signal and generate a patient effort signal indicative of respiratory rate; wherein the signal processor is configured to derive an estimated breath phase of the patient independent of measured flow based at least in part on the patient effort signal. - View Dependent Claims (14, 15, 16)
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17. An air delivery system, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; a pulse oximeter; and a controller configured to determine sleep structure information for the patient is tracked to indicate a therapy'"'"'s effectiveness based at least in part on output from the pulse oximeter. - View Dependent Claims (18, 19)
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20. A method for diagnosing sleep disordered breathing, said method comprising:
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deriving a pulse oximeter signal from a patient; processing the pulse oximeter signal to generate a patient effort signal indicative of respiratory rate; and tracking sleep structure information for the patient to indicate a therapy'"'"'s effectiveness. - View Dependent Claims (21, 22)
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23. A respiratory effort monitoring apparatus, comprising:
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a pulse oximeter configured to derive a pulse oximeter signal; and a signal processor configured to receive the pulse oximeter signal and generate a patient effort signal indicative of respiratory rate; wherein the signal processor is configured to track sleep structure information for the patient to indicate a therapy'"'"'s effectiveness. - View Dependent Claims (24, 25, 26)
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27. An air delivery system, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; a pulse oximeter configured to determine a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator; and a controller configured to extract information regarding patient-ventilator asynchrony from the patient effort signal, and to measure and/or monitor the patient'"'"'s autonomic improvement in response to therapy. - View Dependent Claims (28, 29, 30, 31)
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32. A method for monitoring cardio-respiratory data associated with sleep disordered breathing, said method comprising:
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deriving a pulse oximeter signal from a patient; processing the pulse oximeter signal to generate a patient effort signal indicative of respiratory rate; measuring and/or monitoring the patient'"'"'s autonomic improvement in response to therapy; and extracting patient-ventilator asynchrony from the patient effort signal. - View Dependent Claims (33, 34, 35, 36)
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37. A respiratory effort monitoring apparatus, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; a pulse oximeter configured to determine a measure of patient effort during a treatment period and provide a patient effort signal for input to control operation of the flow generator; and a controller to extract patient-ventilator asynchrony from the patient effort signal, and to measure and/or monitor the patient'"'"'s autonomic improvement in response to therapy. - View Dependent Claims (38, 39, 40, 41)
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42. An air delivery system for clinical management and/or prediction of respiratory exacerbations, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; and a pulse oximeter; wherein the controllable flow generator and/or the pulse oximeter are configured to determine information relating to relative breathing effort, breathing frequency, and/or breathing phase. - View Dependent Claims (43, 44, 45, 46, 47)
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48. A method for clinical management and/or prediction of respiratory exacerbations, said method comprising:
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deriving a pulse oximeter signal from a patient; and processing the pulse oximeter signal to determine information relating to relative breathing effort, breathing frequency, and/or breathing phase, with or without standard oximeter metrics such as oxygen saturation and average heart-rate. - View Dependent Claims (49, 50, 51, 52, 53)
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54. A respiratory effort monitoring apparatus for clinical management and/or prediction of respiratory exacerbations, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; and a pulse oximeter; wherein the controllable flow generator and/or the pulse oximeter are configured to determine information relating to relative breathing effort, breathing frequency, and/or breathing phase. - View Dependent Claims (55, 56, 57)
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58. An air delivery system with provision for assessment of endothelial dysfunction, comprising:
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a controllable flow generator operable to generate a supply of pressurized breathable gas to be provided to a patient for treatment; a pulse oximeter configured to measure the patient'"'"'s vasoconstrictive response to treatment; and a controller configured to trend the vasoconstrictive response over a given time period to indicate a change in endothelial function. - View Dependent Claims (59, 60)
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61. A method for assessment of endothelial dysfunction, said method comprising:
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deriving a pulse oximeter signal from a patient; processing the pulse oximeter to measure the patient'"'"'s vasoconstrictive response to treatment; and trending the vasoconstrictive response over a given time period to indicate a change in endothelial function. - View Dependent Claims (62, 63)
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64. A method of monitoring sleep-disordered breathing, said method comprising:
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deriving a pulse oximeter signal from a patient; processing the pulse oximeter signal to generate a patient effort signal indicative of respiratory rate; measuring saturation variation; and
,correlating the patient effort signal with the saturation variation to detect and/or quantify the level of periodic breathing by the patient.
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Specification