Systems and methods for determining patient effort and/or respiratory parameters in a ventilation system
First Claim
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1. A method for respiratory support, the method comprising:
- measuring a pressure;
measuring an inlet flow and an outlet flow;
based on the inlet flow and the outlet flow, calculating a net flow;
predicting patient effort based at least in part on a relationship between a first value related to the measured pressure, a second value related to the net flow, and a third value related to patient effort; and
updating an interim value based at least in part on the prediction of the patient effort, wherein the interim value does not directly correspond to a respiratory parameter.
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Abstract
Various embodiments of the present disclosure provide systems, methods and devices for respiratory support. As one example, a method for respiratory support is described that includes measuring a pressure, providing a measured pressure, measuring an inlet flow and an outlet flow, and providing a measured net flow. A relationship between a first value related to the measured pressure, a second value related to the measured net flow and a third value related to patient effort is used to provide a prediction of patient effort. An interim value is updated based at least in part on the prediction of the patient effort.
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Citations
25 Claims
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1. A method for respiratory support, the method comprising:
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measuring a pressure; measuring an inlet flow and an outlet flow; based on the inlet flow and the outlet flow, calculating a net flow; predicting patient effort based at least in part on a relationship between a first value related to the measured pressure, a second value related to the net flow, and a third value related to patient effort; and updating an interim value based at least in part on the prediction of the patient effort, wherein the interim value does not directly correspond to a respiratory parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A ventilation system, the ventilation system comprising:
a processor communicably coupled to a computer readable medium, wherein the computer readable medium includes instructions executable by the processor to; receive a pressure; calculate a net flow based at least in part on an inlet flow and an outlet flow; predict patient effort based at least in part on a relationship between a first value related to the pressure, a second value related to the net flow, and a third value related to patient effort; and update an interim value based at least in part on the predicted patient effort, wherein the interim value does not directly correspond to a respiratory parameter. - View Dependent Claims (20)
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21. A method for respiratory support, the method comprising:
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receiving a parameter set of one or more parameters; measuring a pressure; determining a net flow; predicting patient effort based at least in part on a relationship between a first value related to the measured pressure, a second value related to the net flow, and the parameter set; and updating an interim value based at least in part on the prediction of the patient effort, wherein the interim value does not directly correspond to an identifiable respiratory parameter. - View Dependent Claims (22, 23)
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24. A patient ventilator, the ventilator comprising:
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a gas inlet; a gas outlet; a tube coupling the gas inlet and the gas outlet; a pressure sensor, wherein the pressure sensor is operable to measure a pressure in the tube; a first flow sensor, wherein the first flow sensor is operable to measure an inlet flow associated with the gas inlet; a second flow sensor, wherein the second flow sensor is operable to measure an outlet flow associated with the gas outlet; and a processor communicably coupled to a computer readable medium, wherein the computer readable medium includes instructions executable by the processor to; receive the measured pressure; receive the inlet flow; receive the outlet flow; calculate a net flow value based at least in part on the inlet flow and the outlet flow; predict patient effort based at least in part on a relationship between the measured pressure, the net flow, and a value related to patient effort; and update an interim value based at least in part on the predicted patient effort, wherein the interim value does not directly correspond to an identifiable respiratory parameter.
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25. A method for respiratory support, the method comprising:
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measuring a pressure; calculating a net flow; using a dynamic model;
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Specification