Method and apparatus for continuous management of airway pressure for detection and/or prediction of respiratory failure
AssigneeNovaResp Technologies Inc.
InventorsHamed Hanafialamdari, Klaus Michael Schmidt
Life of this patent
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Abstract
Various embodiments are described herein for a controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user. The controller comprises a processor that generates a respiratory index value that is determined during a current monitoring time period to detect a respiratory failure, or predict the respiratory failure when at least one PSG signal is measured. The respiratory index value is compared to a threshold to determine if the control signal needs to be updated to reduce or eliminate respiratory failure that the user is currently experiencing or to prevent a predicted respiratory failure from occurring.
Claims32
A controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user, wherein the controller comprises:
- a processor that is electronically coupled to one or more sensors to receive sensor data and Polysomnography (PSG) data, the processor being configured to measure at least one airflow parameter of the user's airflow from the sensor data and at least one PSG parameter of the user from the PSG data and to generate a control signal for the breathing assistance device for a current monitoring time period by:
- generating a respiratory index value that is determined during the current monitoring time period to predict a respiratory failure for the user by:
- determining a current weighted respiratory status value based on weighting a reactance and a resistance for the user's respiratory system determined from the measured airflow parameters for the current monitoring time period to generate a first index value;
- generating a second index value that is determined from at least one PSG signal for the current monitoring time period;
- and generating the respiratory index value from the first and second index values;
- updating the control signal when a comparison of the respiratory index value to a threshold value indicates that the respiratory failure is detected or is predicted to occur and otherwise maintaining the control signal at a previous setting;
- and
- sending the control signal to the breathing assistance device to adjust the operation of the breathing assistance device during use.
A controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user, wherein the controller comprises:
- a processor that is electronically coupled to one or more sensors to receive sensor data, the processor being configured to direct the one or more sensors to measure the at least one airflow parameter of the user's air flow from the sensor data and to generate a control signal for the breathing assistance device for a current monitoring time period by:
- generating a respiratory index value that is determined during the current monitoring time period to predict a respiratory failure for the user by:
- determining the respiratory index value based on a peak of a relative power spectral density between a current time period and a baseline period for a physiological respiratory signal;
- updating the control signal when a comparison of the respiratory index value to a threshold value indicates that the respiratory failure is likely to occur within a predicted time period and otherwise maintaining the control signal at a previous setting;
- and
- sending the control signal to the breathing assistance device to adjust the operation of the breathing assistance device during use.
A controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user, wherein the controller comprises:
- a processor that is electronically coupled to one or more sensors to receive sensor data therefrom, the processor being configured to perform measurements using the sensor data to measure at least one airflow parameter of the user's airflow and to generate a control signal for the breathing assistance device for a current monitoring time period by:
- generating a respiratory index value that is determined during the current monitoring time period to predict a respiratory failure for the user by:
- performing a Forced Oscillation Technique (FOT) on the user to determine at least one of a reactance, resistance and an impedance of the user's respiratory system;
- and
- generate the respiratory index value based on a peak of a relative power spectral density between a current time period and a baseline period for a physiological respiratory signal including at least one of the reactance, resistance and an impedance of the user's respiratory system;
- updating the control signal when a comparison of the respiratory index value to a threshold value indicates that the respiratory failure is likely to occur within a predicted time period and otherwise maintaining the control signal at a previous setting;
- and
- sending the control signal to the breathing assistance device to adjust the operation of the breathing assistance device during use.
A controller for controlling the operation of a breathing assistance device that provides breathing assistance to a user, wherein the controller comprises:
- a processor that is electronically coupled to one or more sensors to receive sensor data, the processor being configured to perform measurements of at least one airflow parameter from the sensor data and to generate a control signal for the breathing assistance device for a current monitoring time period by:
- generating a respiratory index value that is determined during the current monitoring time period to detect a respiratory failure for the user by:
- determining a current weighted respiratory status value based on weighting a reactance and a resistance for the user's respiratory system determined from the measured airflow parameters for the current monitoring time period;
- and
- generating the respiratory index value based on a deviation of the current weighted respiratory status value from a baseline weighted respiratory status value;
- updating the control signal when a comparison of the respiratory index value to a threshold value indicates that the respiratory failure is detected to occur and otherwise maintaining the control signal at a previous setting;
- and
- sending the control signal to the breathing assistance device to adjust the operation of the breathing assistance device during use.
Dependencies are inferred from the claim text.