Simulator for learning tracheal intubation

Patent metadata

Field	Value
Publication number	US-10242596-B2
Application number	US-201113881167-A
Country	US
Kind code	B2
Filing date	Nov 2, 2011
Priority date	Nov 2, 2010
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

A simulator intended for learning tracheal intubation includes: an anatomic dummy element (1) reproducing at least one buccal cavity (2) provided with a tongue (4), with an epiglottis (7) and with the corresponding glossoepiglottic vallecula (8); a simulation system (15) capable of determining at least one physiological parameter of a patient subject to tracheal intubation; at least one force sensor (13) positioned on the dummy element at the glossoepiglottic vallecula so as to measure the force applied at this level by the blade (11) of a laryngoscope (12) handled by the operator; and transmission element (14) for providing the value of the measurement conducted with the force sensor at the input of the simulation system; wherein the simulation system is laid out for taking into account the value of the measurement conducted with the force sensor in order to determine the physiological parameter.

First claim

The invention claimed is:

1. A simulator intended for learning tracheal intubation comprising:
an anatomic dummy element ( 1 ) reproducing an infant with at least one buccal cavity ( 2 ) provided with a tongue ( 4 ), an epiglottis ( 7 ) and the corresponding glossoepiglottic vallecula ( 8 );
a force sensor ( 13 ) positioned on the anatomic dummy element at the glossoepiglottic vallecula so as to measure a force applied at this position by a blade ( 11 ) of a laryngoscope ( 12 ) handled by an operator practicing a tracheal intubation;
transmission means ( 14 ) for providing a value of the measurement conducted by said force sensor to an input of a simulation system; and
the simulation system ( 15 ) comprising a data processor, the simulation system reproduces physiological parameters of heart rate and oxygen saturation of hemoglobin of the infant, which is subjected to the tracheal intubation depending on the pressure exerted at the force sensor provided at the input of said simulation system, and communicates the determined physiological parameters of heart rate and oxygen saturation of hemoglobin in real time via a transducer ( 15 ) to the operator practicing tracheal intubation on said anatomic dummy element, said transducer comprising a monitor that displays an electrocardiogram of the infant and an acoustic device that provides an acoustic signal whose frequency depends on the oxygen saturation of hemoglobin of the infant;
wherein the monitor displays (i) a heart rate reference value of 135 (+/−15) cycles per minute, (ii) a heart rate decrease by
10 cycles per minute within 30 seconds in response to the detection of a continuously applied force over the period, said continuously applied force over the period corresponding to the pressure exerted on the force sensor that is greater than a threshold equal to 10 N/cm 2 ,
35 cycles per minute within 10 seconds in response to detection of a force within increasing intensity continuously applied over the period, said applied force over the period being greater than said threshold and having an increase in its intensity comprised between at least 5% and at least 40%,
55 cycles per minute within 20 seconds in response to the detection of a force with increasing intensity continuously applied over the period, said applied force over the period being greater than said threshold and having an increase in its intensity comprised between at least 40% and at least 80%,
75 cycles per minute within more than 20 seconds in response to the detection of a force with increasing intensity continuously applied over the period, said continuously applied force over the period being greater than said threshold and having an increase in its intensity comprised between at least 80% and at least 150%,

(iii) a return to the reference value of heart rate from the moment when a force is no longer applied on the force sensor, said return to the reference of heart rate value being carried out according to steps opposite to the steps defined previously for the decrease in the heart rate depending on the intensity of the applied force and on the increase of the latter, and (iv) the obtaining of a zero heart rate marking an end of the simulation;
wherein the acoustic device provides an acoustic signal whose frequency corresponds to (i) a reference value of the oxygen saturation of hemoglobin of 94% (+/−4), (ii) a decrease of oxygen saturation of hemoglobin by
6% within 30 seconds in response to the detection of a force continuously applied over the period, said continuously applied force over the period corresponding to the pressure exerted on the force sensor that is greater than a threshold equal to 10 N/cm 2 ,
20 (±4)% within 10 seconds in response to the detection of a force with increasing intensity, continuously applied over the period, said applied force over the period being greater than said threshold and having an increase in its intensity comprised between at least 5% and at least 40%,
29 (±4)% within 20 seconds in response to the detection of a force with increasing intensity continuously applied over the period, said applied force over the period being greater than said threshold and having an increase its intensity comprised between at least 40% and at least 80%,
38 (±4)% within more than 20 seconds in response to the detection of a force with increasing intensity continuously applied over the period, said continuously applied force over the period being greater than said threshold and having an increase in its intensity comprised between at least 80% and at least 150%,

(iii) a return to the reference value of oxygen saturation of hemoglobin from the moment when a force is no longer applied on the force sensor, said return to the reference value of oxygen saturation being carried out according to steps opposite to the steps defined previously for the decrease in the oxygen saturation of hemoglobin depending on the intensity of the applied force and on the increase of the latter, and (iv) the obtaining of zero oxygen saturation of hemoglobin marking the end of the simulation.

2. The simulator according to claim 1 , wherein said threshold corresponds to the pressure exerted on the force sensor ( 13 ) which is greater than or equal to 20 N/cm 2 .

3. The simulator according to claim 1 , wherein said threshold corresponds to the pressure exerted on the force sensor ( 13 ) which is greater than or equal to 50 N/cm 2 .

4. A method for applying a simulator for learning tracheal intubation that includes,
an anatomic dummy element ( 1 ) reproducing an infant with at least one buccal cavity ( 2 ) provided with a tongue ( 4 ), an epiglottis ( 7 ) and the corresponding glossoepiglottic vallecula ( 8 ),
a force sensor ( 13 ) positioned on the anatomic dummy element at the glossoepiglottic vallecula so as to measure a force applied at this position by a blade ( 11 ) of a laryngoscope ( 12 ) handled by an operator practicing a tracheal intubation;
transmission means ( 14 ) for providing a value of the measurement conducted by said force sensor to an input of a simulation system; and
the simulation system ( 15 ) comprising a data processor, the simulation system reproduces physiological parameters of heart rate and oxygen saturation of hemoglobin of the infant, which is subjected to the tracheal intubation depending on the pressure exerted at the force sensor provided at the input of said simulation system, and communicates the determined physiological parameters of heart rate and oxygen saturation of hemoglobin in real time via a transducer ( 15 ) to the operator practicing tracheal intubation on said anatomic dummy element, said transducer comprising a monitor that displays an electrocardiogram of the infant and an acoustic device that provides an acoustic signal whose frequency depends on the oxygen saturation of hemoglobin of the infant;
the method comprising the steps of:
setting a reference value ( 102 ) of 135 (+/−15) cycles per minute for the heart rate and a reference value of 94% (+/−4) for the oxygen saturation of hemoglobin;
recording the value of the measurement conducted with the force sensor ( 103 ) resulting from the force applied by the blade of the laryngoscope handled by the operator;
cyclically incrementing ( 105 - 107 ) said physiological parameters from respective said reference values depending on the measurements conducted with the force sensor, resulting from the force applied by the blade of the laryngoscope handled by the operator for reproducing a physiological tolerance to this medical act by the infant and consecutive alteration of some of the infant's vital functions and constants; and
the method further comprising communicating ( 109 ) in real time to the operator, the incremented parameter, via said transducer, and the operator determining in real time the physiological tole

Assignees

• Simeoni Umberto
• Foucqueteau Philippe
• Assist Publique Des Hopitaux De Marseille
• Univ Aix Marseille

Inventors

• Simeoni Umberto
• Foucqueteau Philippe

Classifications

• G09B23/30

  Anatomical models {(G09B23/281 - G09B23/288 take precedence)} · CPC title

• G09B23/285 Primary

  for injections, endoscopy, bronchoscopy, sigmoidscopy, insertion of contraceptive devices or enemas · CPC title

• G09B23/288 Primary

  for artificial respiration or heart massage · CPC title

• G09B23/28

  for medicine · CPC title

• G09B9/00 Primary

  Simulators for teaching or training purposes (for the use of weapons F41; computing aspects G06; {protocols for games, networked simulations or virtual reality H04L67/131}) · CPC title