US 10,765,822 B2 · Endotracheal tube extubation detection

Abstract

Systems and methods for detecting extubation of an endotracheal tube (ETT) are described. Extubation of the ETT can be identified by comparing to a threshold, a difference between a determined first volume of breathing gas during a first inspiratory period to a determined second volume of breathing gas during a second inspiratory period. If the difference exceeds the threshold, an alarm can be activated indicating extubation. Extubation detection may also be based on a difference between inspiratory pressures during separate inspiratory periods. Partial extubation and full extubation may also be discerned. Further, extubation of an ETT may be detected without the use of an exhalation flow sensor.

Claims15

Dependent claims

A ventilator-implemented method for detecting extubation of an endotracheal tube during ventilation, the method comprising:

determining, by the ventilator based on measurements from one or more sensors, a first volume of breathing gas delivered to a patient during a first inspiratory period;
determining, by the ventilator based on measurements from the one or more sensors, a second volume of breathing gas delivered to a patient during a second inspiratory period;
determining, by the ventilator, a difference between the first volume and the second volume;
comparing, by the ventilator, the determined value for the difference between the first volume and the second volume to a threshold;
and
activating, by the ventilator, an alarm indicating extubation of the endotracheal tube when the determined value for the difference is greater than the threshold.

3 more elements

A ventilator system comprising:

a pressure generating system adapted to generate a flow of breathing gas;
a ventilation tubing system including a patient interface for connecting the pressure generating system to a patient, wherein the ventilation tubing system further includes an inspiratory limb, an expiratory limb, an endotracheal tube, and a wye connecting the inspiratory limb, the expiratory limb, and the endotracheal tube;
an inspiratory flow sensor coupled to at least one of the pressure generating system and the ventilation tubing system;
an inspiratory pressure sensor coupled to the inspiratory limb;
an expiratory pressure sensor coupled to the expiratory limb;
an interface for displaying operational data for the ventilator system;
one or more processors operatively coupled to at least the inspiratory pressure sensor and the expiratory sensor;
and
a memory operatively coupled to the one or more processors, wherein the memory includes instructions configured cause the ventilator system to perform a set of operations upon execution by the one or more processors, the set of operations comprising:
determining a first volume of the breathing gas delivered to a patient during a first inspiratory period;
determining a second volume of breathing gas delivered to a patient during a second inspiratory period;
determining a difference between the first volume and the second volume;
comparing a value for the determined difference between the first volume and the second volume to a threshold;
and
activating an alarm in the interface indicating extubation of the endotracheal tube when the determined value for the difference is greater than the threshold.

12 more elements

Dependencies are inferred from the claim text.

Endotracheal tube extubation detection

Life of this patent

Endotracheal tube extubation detection

Life of this patent

Abstract

Claims15