US 12,653,976 B2Granted

Ventilation monitoring

AssigneeZOLL Medical Corporation

InventorsGary A. Freeman, Guy R. Johnson, Annemarie Silver

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Abstract

A ventilation monitoring system for assisting in proper placement of an endotracheal tube in a subject includes: a capnography sensor configured to be placed in fluid communication with the endotracheal tube and to provide information representative of the subject's breath; and a processor in communication with the capnography sensor. The processor is configured to provide an indication of proper endotracheal tube placement when (1) a first indication of the subject's breath and a positive result of a first auscultation are identified within a first predetermined time period, and (2) a second indication of the subject's breath and a positive result of a second auscultation are identified within a second predetermined time period. The first auscultation includes auscultation of a subject's left lung, right lung, left axillary region, right axillary region, or abdomen. The second auscultation includes auscultation of another region of the subject different from the first auscultation.

Claims18

Dependent claims

A ventilation monitoring system, comprising:

at least one capnography sensor configured to provide information representative of a breath of a subject;
and
a ventilation monitoring device comprising at least one processor in communication with the at least one capnography sensor, the at least one processor configured to:
prompt a user to execute ventilation monitor testing using the ventilation monitoring device to determine if an endotracheal tube positioned in a trachea of the subject has become dislodged;
during the ventilation monitor testing, within a first predetermined time period, cause the ventilation monitoring device to provide at least one prompt to the user to perform at least one first manual auscultation of at least one of a left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receive by a user interface of the ventilation monitoring device at least one indication of a positive result of the at least one first manual auscultation of at least one of the left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receive and process signals from the at least one capnography sensor obtained during the first predetermined time period, and analyze the received and processed signals to identify at least one breath by the subject occurring during the first predetermined time period;
during the ventilation monitor testing, within a second predetermined time period occurring after the first predetermined time period, cause the ventilation monitoring device to provide at least one prompt to the user to perform at least one second manual auscultation of another of the left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receive by the user interface of the ventilation monitoring device a positive result of the at least one second manual auscultation, receive and process signals from the at least one capnography sensor obtained during the second predetermined time period, and analyze the received and processed signals to identify at least one breath by the subject occurring during the second predetermined time period;
and
provide an indication of a failure status of the ventilation monitor testing when the positive result of the at least one first manual auscultation is not received within the first predetermined time period, the at least one breath by the subject occurring during the first predetermined time period is not identified within the first predetermined time period, the positive result of the at least one second manual auscultation is not received within the second predetermined time period, or the at least one breath by the subject occurring during the second predetermined time period is not identified within the second predetermined time period.

5 more elements

A method for monitoring placement of an endotracheal tube positioned in a trachea of a subject performed by at least one processor of a ventilation monitoring device, the method comprising:

prompting a user to execute ventilation monitor testing using the ventilation monitoring device to determine if the endotracheal tube positioned in the trachea of the subject has become dislodged;
during the ventilation monitor testing, within a first predetermined period of time, prompting the user to perform at least one first manual auscultation of at least one of a left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receiving by a user interface of the ventilation monitoring device at least one indication of a positive result of the at least one first manual auscultation of at least one of the left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receiving and processing signals representative of the breath of the subject from at least one capnography sensor in fluid communication with the endotracheal tube obtained during the first predetermined time period, and analyzing the received and processed signals to identify at least one breath by the subject occurring during the first predetermined time period;
during the ventilation monitor testing, within a second predetermined time period occurring after the first predetermined time period, prompting the user to perform at least one second manual auscultation of another of the left lung, right lung, left axillary region, right axillary region, or abdomen of the subject, receiving by the user interface of the ventilation monitoring device at least one indication of a positive result of the at least one second manual auscultation, receiving and processing signals from the at least one capnography sensor obtained during the second predetermined time period, and analyzing the received and processed signals to identify at least one breath by the subject occurring during the second predetermined time period;
and
providing an indication of a failure status of the ventilation monitor testing when the positive result of the at least one first manual auscultation is not received within the first predetermined time period, the at least one breath by the subject occurring during the first predetermined time period is not identified during the first predetermined time period, the positive result of the at least one second manual auscultation is not received within the second predetermined time period, or the at least one breath by the subject occurring during the second predetermined time period is not identified during the second predetermined time period.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/507,018Filed 21 Oct 2021 · continuation
Priority: 21 Dec 2012
Published: US 2022/0152328 A119 May 2022
Granted: 16 Jun 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification36 codes

A61M 16/0411
Special features for tracheal tubes not otherwise provided for: with means for differentiating between oesophageal and tracheal intubation
A61B 5/0836
Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption: measuring rate of CO2 production
A61B 5/086
Measuring impedance of respiratory organs or lung elasticity: by impedance pneumography
A61B 5/087
Measuring devices for evaluating the respiratory organs: measuring breath flow

Family

Application61/740,789Us provisional application · filed 21 Dec 2012
Application14/109,519Parent of this continuation · filed 17 Dec 2013
Application16/242,385Parent of this continuation · filed 8 Jan 2019
US 10,220,169 B2Parent of this continuation · filed 5 Mar 2019
US 2022/0152328 A1Pre-grant publication · published 19 May 2022
US 11,173,265 B2Parent of this continuation
US 2014/0180138 A1Published application
US 2019/0175852 A1Published application
US 12,653,976 B2This patent

From the US filing history. Foreign family members aren’t listed.