Patent ID: 11865259
Assignee: TELESAIR, INC.
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 14:
15. A method for respiratory therapy applied in a device configured with at least two operating modes, and the at least two operating modes comprise a first operating mode for providing high-flow nasal cannula (HFNC) support for a patient and a second operating mode for providing non-invasive ventilation (NIV) support or invasive ventilation (INV) support for the patient; the method comprising:
obtaining a Respiratory Rate-Oxygenation (ROX) index based on first parameters; and
triggering mode switching of the device according to the ROX index and a preset triggering strategy for switching the operating mode of the device;
wherein the device is provided with humidification components and a flow sensor, the humidification components comprise a temperature sensor and a heating element connected to the temperature sensor, and the method further comprises;
humidifying, by the humidification components, a gas flow delivered to the patient;
measuring, by the flow sensor, a flow rate of the gas flow;
measuring, by the temperature sensor, a temperature of the heating element when the device is operating in the first operating mode or the second operating mode; and
adjusting the temperature of the heating element based on the flow rate;
wherein the method further comprises:
adjusting the temperature of the heating element to a first temperature value by the following formula:

Theating element(t)=an·Q(t)n+an-1·Q(t)n-1+an-2·Q(t)n-2+ . . . +a1·Q(t)+a0 

wherein Theating element(t) is a temperature of the heating element at time t; Q(t) is a flow rate of the gas flow going through the chamber at time t before heating and humidification; an, an-1, an-2, . . . a1, a0 are coefficients of the formula; and n is a positive integer;
the coefficients of the formula are obtained by fitting experimental data of a series of experiments and are pre-stored in the memory.