Patent ID: 11883593
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A ventilator system comprising:
a ventilator configured to deliver breathing gas to a breathing patient;
one or more sensors configured to be operatively connected to the ventilator system and determine airway flow information and airway pressure information indicative of flow and pressure, respectively, of the breathing gas; and
a computer system that comprises one or more physical processors programmed with computer program instructions which, when executed, cause the computer system to:
determine breath segmentation data indicating a first time associated with an onset of respiratory effort and a second time associated with an end of inhalation of the breathing patient;
use: (a) a difference in airway flow values sampled at a first time and during exhalation; and (b) airway volume values sampled during the exhalation determine a respiratory time constant value;
use the respiratory time constant value in combination with airway pressure values and the airway flow values sampled at the first time and the second time, and an airway volume value sampled at the second time, to thereafter recover one or more of respiratory resistance and respiratory elastance; and
provide, using the one or more of the respiratory resistance and respiratory elastance, a parameter of respiratory mechanics in a presence of an intrinsic positive end-expiratory pressure (PEEPi)

as input to the ventilator, causing an adjustment of one or more settings of the ventilator.