Method and device responsive to diaphragmatic activity for adjusting positive pressure assist during expiration
First Claim
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1. A method of controlling positive pressure assist to a patient during expiration, the method comprising:
- measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and
adjusting a level of positive pressure assist to the patient during expiration in response to the measured level of electrical activity;
wherein adjusting the level of positive pressure assist to the patient during expiration comprises minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and
wherein minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration controls stress on the respiration-related muscle while avoiding patient'"'"'s lung collapse.
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Abstract
A method and device for controlling positive pressure assist to a patient during expiration, measure a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration. In response to the measured level of electrical activity, a level of positive pressure assist to the patient during expiration is adjusted in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration.
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Citations
30 Claims
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1. A method of controlling positive pressure assist to a patient during expiration, the method comprising:
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measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and adjusting a level of positive pressure assist to the patient during expiration in response to the measured level of electrical activity;
wherein adjusting the level of positive pressure assist to the patient during expiration comprises minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and
wherein minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration controls stress on the respiration-related muscle while avoiding patient'"'"'s lung collapse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 15)
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9. A method of controlling positive pressure assist to a patient during expiration, the method comprising:
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measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and in response to the measured level of electrical activity, adjusting a level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; wherein adjusting the level of positive pressure assist to the patient during expiration comprises; comparing a last measured level of electrical activity of the patient'"'"'s respiration-related muscle during expiration to a previously stored lowest measured level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and when the comparison between the last measured level of electrical activity and the previously stored lowest measured level of electrical activity indicates that the last measured level of electrical activity is lower than the previously stored lowest measured level of electrical activity, storing the last measured level of electrical activity as the lowest measured level of electrical activity.
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10. A method of controlling positive pressure assist to a patient during expiration, the method comprising:
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measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and in response to the measured level of electrical activity, adjusting a level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; wherein adjusting the level of positive pressure assist to the patient during expiration comprises; adjusting a level of a ventilation feature related to a mode of mechanical ventilation providing assist to the patient during expiration; comparing a last measured level of electrical activity of the patient'"'"'s respiration- related muscle during expiration to a previously stored lowest measured level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and controlling the level of the ventilation feature in relation to the comparison between the last measured level of electrical activity and the previously stored lowest measured level of electrical activity.
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11. A method of controlling positive pressure assist to a patient during expiration, the method comprising:
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measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and in response to the measured level of electrical activity, adjusting a level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; wherein adjusting the level of positive pressure assist to the patient during expiration comprises; comparing a last measured level of electrical activity of the patient'"'"'s respiration- related muscle during expiration to a previously measured lowest level of electrical activity of the patient'"'"'s respiration-related muscle; and adjusting the level of positive pressure assist to the patient during expiration in relation to the comparison between the last measured level of electrical activity and the previously measured lowest level of electrical activity. - View Dependent Claims (12, 13, 14)
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16. A device for controlling positive pressure assist to a patient during expiration, comprising:
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means for measuring a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and means for adjusting a level of positive pressure assist to the patient during expiration in response to the measured level of electrical activity;
wherein the means for adjusting the level of positive pressure assist to the patient during expiration comprises means for minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and
wherein minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration controls stress on the respiration- related muscle while avoiding patient'"'"'s lung collapse.
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17. A device for controlling positive pressure assist to a patient during expiration, comprising:
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a detector of a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; and a controller of a level of positive pressure assist to the patient during expiration, the controller being supplied with the detected level of electrical activity and controlling the level of positive pressure assist to the patient during expiration, the controller further minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration, wherein minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration controls stress on the respiration-related muscle while avoiding patient'"'"'s lung collapse. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A device for controlling positive pressure assist to a patient during expiration, the device comprising:
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a detector of a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; a controller of a level of positive pressure assist to the patient during expiration, the controller being supplied with the detected level of electrical activity and controlling the level of positive pressure assist to the patient during expiration, the controller further minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration, wherein minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration controls stress on the respiration-related muscle while avoiding patient'"'"'s lung collapse; wherein the controller comprises; a first comparator of a level of a ventilation feature related to a mode of mechanical ventilation providing assist to the patient during expiration to an upper safety threshold; and a unit for increasing the level of the ventilation feature by a predetermined step when the comparison conducted by the first comparator indicates that the level of the ventilation feature is lower than the upper safety threshold; wherein the detector detects the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration after the level of the ventilation feature has been increased by the predetermined step; and wherein the controller comprises a second comparator of a last detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration to a previously stored lowest detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration.
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25. A device for controlling positive pressure assist to a patient during expiration, the device comprising:
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a detector of a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; a controller of a level of positive pressure assist to the patient during expiration, the controller being supplied with the detected level of electrical activity and controlling the level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; a comparator of a last detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration to a previously stored lowest detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and a store for storing the last detected level of electrical activity as the lowest detected level of electrical activity when the comparison conducted by the comparator indicates that the last detected level of electrical activity is lower than the previously stored lowest detected level of electrical activity.
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26. A device for controlling positive pressure assist to a patient during expiration, the device comprising:
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a detector of a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; a controller of a level of positive pressure assist to the patient during expiration, the controller being supplied with the detected level of electrical activity and controlling the level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; wherein the controller is a controller of a level of a ventilation feature related to a mode of mechanical ventilation providing assist to the patient during expiration and comprises; a comparator of a last detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration to a previously stored lowest detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and a sub-controller of the level of the ventilation feature in relation to the comparison conducted by the comparator between the last detected level of electrical activity and the previously stored lowest detected level of electrical activity.
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27. A device for controlling positive pressure assist to a patient during expiration, the device comprising:
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a detector of a level of electrical activity of a patient'"'"'s respiration-related muscle during expiration; a controller of a level of positive pressure assist to the patient during expiration, the controller being supplied with the detected level of electrical activity and controlling the level of positive pressure assist to the patient during expiration in view of minimizing the level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; wherein the controller comprises; a comparator of a last detected level of electrical activity of the patient'"'"'s respiration-related muscle during expiration to a previously detected lowest level of electrical activity of the patient'"'"'s respiration-related muscle during expiration; and a sub-controller of the level of positive pressure assist to the patient during expiration in relation to the comparison conducted by the comparator between the last detected level of electrical activity and the previously detected lowest level of electrical activity. - View Dependent Claims (28, 29, 30)
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Specification