Patent ID: 11931509
Assignee: COVIDIEN LP
Field: Medical technology (Instruments)
Classification: CPC A  G | IPC A  G

Claim 13:
14. A ventilator system for delivering drive pressure ventilation to a patient, the ventilator system comprising:
a pressure generating system that generates a flow of breathing gas;
a ventilation tubing system including a patient interface for connecting the pressure generating system to the patient;
one or more non-invasive sensors operatively coupled to at least one of the pressure generating system or the ventilation tubing system, wherein the one or more non-invasive sensors generate output indicative of at least one of flow, volume or pressure;
a controller configured to cause the ventilator system to perform a set of operations including:
ventilating the patient with the ventilator in a spontaneous breath subtype, wherein the spontaneous breath subtype does not include a proportional assist (PA) breath subtype;
non-invasively monitoring respiratory data of the patient with the one or more non-invasive sensors;
delivering inspiratory gas to the patient with the ventilator in response to a detected patient effort;
determining a percent support setting for the PA breath subtype, based on a target setting or the respiratory data monitored during the spontaneous breath subtype;
automatically and temporarily switching from the spontaneous breath subtype into the PA breath subtype for at least three breaths, wherein the PA breath subtype is based on the percent support setting;
estimating a respiratory system compliance and a respiratory system resistance of the patient, based on the respiratory data monitored during the PA breath subtype;
returning to the spontaneous breath subtype after the at least three breaths;
calculating a drive pressure of the patient based on:
at least one of the respiratory system compliance or the respiratory system resistance, estimated during the PA breath subtype; and
the respiratory data monitored after returning to the spontaneous breath subtype; and

automatically performing an action by the ventilator, based on the drive pressure.