KR101676950B1 - Apparatus and method for abnormal breath diagnosis - Google Patents

Apparatus and method for abnormal breath diagnosis Download PDF

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Publication number
KR101676950B1
KR101676950B1 KR1020150040179A KR20150040179A KR101676950B1 KR 101676950 B1 KR101676950 B1 KR 101676950B1 KR 1020150040179 A KR1020150040179 A KR 1020150040179A KR 20150040179 A KR20150040179 A KR 20150040179A KR 101676950 B1 KR101676950 B1 KR 101676950B1
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KR
South Korea
Prior art keywords
carbon dioxide
unit
concentration
exhalation
abnormal
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Application number
KR1020150040179A
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Korean (ko)
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KR20160113881A (en
Inventor
홍민선
김다솜
김보겸
박천탁
방은정
이세희
김범석
정동균
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아주대학교산학협력단
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
    • A61B5/0836—Measuring rate of CO2 production
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
    • A61B5/0826—Detecting or evaluating apnoea events
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/48—Other medical applications
    • A61B5/4806—Sleep evaluation
    • A61B5/4818—Sleep apnoea
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
    • A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
    • A61B5/6802—Sensor mounted on worn items
    • A61B5/6803—Head-worn items, e.g. helmets, masks, headphones or goggles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/74—Details of notification to user or communication with user or patient ; user input means
    • A61B5/742—Details of notification to user or communication with user or patient ; user input means using visual displays
    • A61B5/7445—Display arrangements, e.g. multiple display units

Abstract

The present invention provides an apparatus for diagnosing an abnormal breathing symptom of a subject to be examined, the apparatus comprising: a main body of a diagnostic device covered on the face of the subject; A power supply unit for supplying power necessary for operation; A carbon dioxide sensor disposed on the main body of the diagnostic apparatus and measuring the concentration of carbon dioxide contained in the exhalation of the examinee and outputting a corresponding signal; A determination unit for analyzing the output signal of the carbon dioxide sensor to determine whether the abnormal examination of the examinee is abnormal; And a display unit for displaying a determination result of the determination unit.
The present invention can determine the abnormal breathing state (including low breathing or apnea) of the examinee by measuring the concentration of carbon dioxide contained in the exhalation of the examinee, grasping the abnormal breathing state of the examinee, The patient can be informed about the need for abnormal respiration therapy.

Description

[0001] Apparatus and method for abnormal breathing diagnosis [0002]

The present invention relates to an abnormal respiratory diagnostic apparatus and method, and more particularly, to an abnormal respiratory diagnostic apparatus and method capable of detecting abnormal breathing (including low breathing or apnea) by measuring the concentration of carbon dioxide contained in breathing during exhalation .

Abnormal breathing is a respiratory phenomenon caused by injury and airway obstruction, hypoxic environment, abnormal oxygen transport ability of blood, central paralysis control paralysis, etc.

Abnormal breathing includes sleep hypnotic and sleep apnea.

Hypopnea is a phenomenon in which respiration does not stop completely but the respiratory rate decreases by 30% or more during sleep and the oxygen saturation decreases by 4% or more for 10 seconds or more.

Sleep apnea is a temporary respiratory arrest during sleep.

If the supply of oxygen to the body is not reduced or supplied due to abnormal breathing, the oxygen saturation (the degree of oxygen contained in the blood) in the body becomes abnormally low. In particular, sleep fragmentation at night due to sleep apnea causes Excessive Daytime Sleepiness (EDS) and decreases arterial oxygen saturation (O 2 saturation). Decreased oxygen saturation not only causes hypertension, arrhythmia, but can also cause serious consequences such as heart attack and sudden death during sleep.

Therefore, in order to prepare for the sleep apnea state, it is necessary for the subject to detect whether or not the sleep apnea symptom is present.

In the past, a method of measuring the respiration status of a subject in a state where a person to be examined was taking a sleeping tube was used for measuring abnormal breathing symptoms.

The above method has a problem that the oxygen saturation of the lung can not be measured although it is possible to measure the abnormality of the subject.

Prior art to the present invention is exemplified by the registered patent 10-742744.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a method and apparatus for measuring a concentration of carbon dioxide contained in an exhalation of a subject to be examined, And an object of the present invention is to provide an abnormal respiratory diagnosis apparatus and method.

It is another object of the present invention to provide an apparatus and method for an abnormal respiration diagnosis which can recognize an abnormal breathing state of a person to be inspected during sleep and inform the person to be inspected to recognize the necessity of abnormal breathing therapy.

In order to attain the above object, the present invention provides an apparatus for diagnosing an abnormal breathing symptom of a subject to be examined, the apparatus comprising: a main body of a diagnostic apparatus covered on the face of the subject; A power supply unit for supplying power necessary for operation; A carbon dioxide sensor disposed on the main body of the diagnostic apparatus and measuring the concentration of carbon dioxide contained in the exhalation of the examinee and outputting a corresponding signal; A determination unit for analyzing the output signal of the carbon dioxide sensor to determine whether the abnormal examination of the examinee is abnormal; And a display unit for displaying a determination result of the determination unit.

A memory unit for storing signals output from the carbon dioxide sensor, and an output terminal for outputting data stored in the memory unit to the outside.

Wherein the main body of the diagnosis unit comprises a unit body which covers the both eyes of the examinee, a fixing line which is disposed at both ends of the unit body to keep the unit body in a fixed state, and a fixing unit which is arranged on the fixing line, And a power supply cutoff unit that cuts off the operation of the power supply unit when the tension is less than a predetermined value by using an output signal of the tension sensor.

The power supply interruption unit may include a timer for counting a predetermined time when the tension is less than a predetermined value, a power supply sensing unit for sensing whether the power supply unit is turned off, And a warning unit for outputting a signal for warning of the departure of the unit body if the unit body is not detected.

According to another aspect of the present invention, there is provided an abnormal respiratory diagnostic apparatus comprising: an abnormal respiratory diagnostic apparatus according to claim 1; Measuring the concentration of carbon dioxide contained in the exhalation of the subject to be examined while sleeping; Measuring an interval of the exhalation; Determining an ideal breathing state according to an increase value of the concentration of carbon dioxide included in the exhalation; And displaying the determined abnormal breathing state.

Stopping the progress of the step of measuring the concentration of carbon dioxide when the abnormal respiratory diagnostic apparatus is detached, and notifying the stop of the concentration measurement step can do.

Wherein the abnormal breathing is judged to be low breathing if the maximum value detection interval of the concentration of carbon dioxide is 10 seconds or more and the increase value of the concentration of carbon dioxide in the exhalation and the next exhalation is less than 5% The detection interval of the maximum concentration is 10 seconds or more, and if the increase in the concentration of carbon dioxide in the exhalation and the next exhalation is 5% or more, it can be judged as apnea.

When the apnea is determined to be apnea, the apnea index can be converted and output according to the following equation (1).

[Equation 1]

Apnea index = (total number of times of total sleeping time / maximum detection of concentration of carbon dioxide)

The present invention as described above can determine the abnormal breathing state (including low breathing or apnea) of the subject to be examined during sleep by measuring the concentration of carbon dioxide contained in the breathing of the subject to be examined.

In addition, the present invention can grasp the abnormal breathing state of the person to be inspected while sleeping, inform the person to be inspected, and recognize the necessity of the abnormal breathing therapy.

1 is a block diagram showing an example of a configuration of an abnormal respiration diagnosis apparatus according to an embodiment of the present invention.
2 is a diagram showing an example of the outline of an abnormal respiratory diagnosis apparatus according to an embodiment of the present invention.
3 is a flowchart showing an example of the configuration of the abnormal respiratory diagnosis method according to the present invention.
4 is a flowchart showing a configuration of a step of detecting departure of a main body of a diagnostic apparatus used in the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing an example of the configuration of an abnormal respiration diagnosis apparatus according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of an outer appearance of an abnormal respiration diagnosis apparatus according to an embodiment of the present invention .

1 and 2, an abnormal respiration diagnosis apparatus 100 according to an embodiment of the present invention includes a diagnostic body 110, a power supply unit (BAT), a carbon dioxide sensor 120, a determination unit 130, (160).

In addition, the abnormal respiration diagnosis apparatus 100 according to an embodiment of the present invention may further include a memory unit 132 and an output terminal 134.

FIG. 3 is a flowchart illustrating an example of a configuration of an abnormal respiratory diagnostic method according to the present invention. In the abnormal respiratory diagnostic method according to the present invention, the abnormal respiratory diagnostic device is worn (S110), the concentration of carbon dioxide is measured A step S160 of measuring an interval between exhalation and an exhalation, a step S150 of measuring an interval of exhalation, a step S160 of judging abnormal breathing according to an increase value of the concentration of carbon dioxide, and a step S170 of displaying an abnormal breathing state.

In addition, the abnormal breathing diagnostic method according to the present invention further includes a step of detecting a departure of the abnormal breathing diagnostic apparatus (S120).

The present invention will be described with reference to Figs. 1 to 3. Fig.

The examinee wears the abnormal respiratory diagnostic apparatus 100 according to the present invention for the abnormal breathing test (S110).

The diagnostic unit main body 110 is made in a form to be worn on the face of the examinee and maintains a state of being worn on the face of the examinee during the abnormal breath test.

The diagnostic apparatus main body 110 includes a unit body 111, a fixed line 112, a tension sensor 113, a power supply cutoff unit 150, and a warning unit 156.

The unit main body 111 is in the form of a lining and is worn on the eye part of the examinee. Here, the unit body 111 can cover the eye region and the eye peripheral region of the examinee, and the size and the detailed shape can be variously set according to the needs of the user.

 The person to be tested should take a sleep for the breath test, and the abnormal breath test is performed during the sleep. Therefore, it is preferable that the unit main body 111 is made of a soft material such as a memory foam so that the surface of the examinee can be smoothly contacted with the face of the examinee without interfering with the water surface of the examinee. Further, it is preferable that the unit main body 111 is formed in a shape corresponding to the shape of the face of the examinee. In addition, it is preferable to arrange the crotch pad in contact with the nose portion of the examinee's body on one surface of the unit main body 111, that is, a portion in contact with the face of the examinee.

A power supply unit (BAT) may be disposed on a predetermined position of the unit main body 111. The supply unit (BAT) supplies necessary power for the overall operation of the abnormal respiratory diagnostic apparatus according to the present invention. The power supply unit BAT may be disposed outside the unit body 111 according to the needs of the user. The power supply unit BAT can be started and stopped by on / off of the operation switch SW.

The fixed line 112 is connected to both sides of the unit body 111 and is hooked to the ear of the examinee so that the unit body 111 is held in a state of being worn on the face of the examinee.

On the other hand, during the abnormal breathing test, it is necessary to detect the subject body 110 because it may inadvertently deviate from the subject due to the sleeping object being turned over.

FIG. 4 is a flowchart showing the configuration of a step S 120 for detecting departure of a main body of a diagnostic apparatus used in the present invention.

4, the present invention further includes a step S122 of detecting a tension release of a fixed line, a step S124 of detecting power off, a step S126 of suspending concentration measurement, and a step S128 of suspending concentration measurement stop do.

The step S122 of detecting the tension release of the fixed line 112 of the diagnostic main body 110 worn for the abnormal breath test is performed. Although it is shown that the detection of the departure of the diagnostic apparatus main body 110 is performed before the measurement of the carbon dioxide concentration, which will be described later, in practice, it is desirable to continuously detect the departure of the diagnostic apparatus main body 110 during the abnormal breath test .

Detection of departure of the diagnostic apparatus main body 110 is performed as follows.

The tension sensor 113 is disposed on the fixed line 112, measures the tension of the fixed line 112, and outputs a signal corresponding thereto.

The power supply cut-off unit 150 detects the operation of the power supply unit BAT (S124) if it is determined that the diagnostic main unit 110 is detached by the signal of the tension sensor 113. [ The operation of the carbon dioxide sensor 120 to be described later is stopped by the interruption of the power supply and the measurement of the carbon dioxide concentration is stopped (S126).

Then, it is notified through the warning unit 156 that the measurement of the carbon dioxide concentration is stopped (S128).

Detection of departure of the diagnostic apparatus main body 110 will be described in more detail.

First, the power supply cutoff unit 150 further includes a timer 152 and a power supply detection unit 154.

The timer 152 counts a predetermined time (for example, 5 minutes) and outputs a corresponding signal when the output signal of the tension sensor 113 indicates the release of the tension (S122).

The power supply detection unit 154 detects whether the operation switch SW is turned off by an external user and outputs a corresponding signal (S124).

The power supply cutoff unit 150 outputs a signal indicating that a predetermined tension is applied to the fixed line 112 from the tension sensor 113 and outputs a signal indicating that a predetermined tension is applied to the fixed line 112 during a time If the off-signal is not output from the sensing unit 154, it is determined that the unit main body 111 is detached from the face of the examinee due to flipping of the examinee during the sleep inspection, and the power supply of the power supply unit BAT is interrupted , And the measurement of the concentration of carbon dioxide is stopped (S126).

The warning unit 156 outputs a warning signal indicating the departure of the unit body 111 when the tension of the fixed line 112 is released and the power supply of the power supply unit BAT is interrupted. Here, the signal output from the warning unit 156 may be output to the outside through the display unit 160, which will be described later.

If the unit main body 111 is abnormally released, it is announced and the process is terminated without any additional operation.

It is assumed that there is no abnormal departure of the unit body 111 and the measurement of the carbon dioxide concentration for abnormal respiration diagnosis will be described.

In order to inspect the subject's apnea, the subject wears the diagnostic apparatus main body 110 (S110) and takes a sleep state in a state in which the operation switch SW is turned on.

A step S130 of measuring the concentration of carbon dioxide contained in the exhalation of the subject is performed. For this purpose, a carbon dioxide sensor 120 is used.

The carbon dioxide sensor 120 is disposed at a predetermined position of the unit body 111, measures the concentration of carbon dioxide contained in the exhalation of the examinee, and outputs a signal corresponding to the measured concentration (S130). The carbon dioxide sensor 120 measures the carbon dioxide concentration at predetermined time intervals while the power is supplied.

The signal output from the carbon dioxide sensor 120 is stored in the memory unit 132 so that the user can use the signal thereafter. The data stored in the memory unit 132 may be output to the outside via a separate output terminal (for example, a USB terminal)

In the memory unit 132, the time of exhalation at the exhalation of the examinee is recorded, and the concentration of carbon dioxide contained in the exhalation is recorded. The recording of the time of exhalation and the concentration of carbon dioxide is repeatedly performed until the operation switch SW is turned off.

After the sleeping of the examinee is made for a predetermined period of time, the operation switch SW is normally turned off and the measurement is terminated (S140), and it is judged whether abnormal breathing is performed using the data stored in the memory unit 132. [

The determination unit 130 receives the signal output from the carbon dioxide sensor 120 and analyzes the signal to determine whether the person to be examined has abnormal breathing symptoms.

The judgment of abnormal respiratory symptoms is performed as follows.

The determination unit 130 receives the signals continuously output from the carbon dioxide sensor 120 and measures the concentration of the carbon dioxide using the signals.

As the abnormal respiration of the subject is progressed, the carbon dioxide concentration in the alveoli increases because the carbon dioxide in the lung is not discharged to the outside. Here, the concentration value of carbon dioxide contained in the exhalation of the subject is the same as the concentration of carbon dioxide in the alveoli of the subject.

Therefore, if an exhalation is made during abnormal breathing, the carbon dioxide concentration measured by the carbon dioxide sensor 120 is measured to gradually increase, and the carbon dioxide concentration reaches the maximum value by repeating abnormal breathing. Here, if the concentration of carbon dioxide is more than a predetermined value, it can be determined as the maximum value.

The determination unit 130 measures the degree of increase of the carbon dioxide concentration by using the concentration value of the carbon dioxide stored in the memory unit 132 and the interval between the exhalation.

Here, the concentration of carbon dioxide may temporarily decrease when an exhalation occurs during abnormal breathing, but the concentration of carbon dioxide contained in the exhalation is repeatedly reached to the maximum value by repeating the abnormal breathing.

Therefore, abnormal breathing can be determined by detecting the time interval between exhalation and exhalation and the degree of increase of the concentration of carbon dioxide.

The determination unit 130 measures the time interval of expiration. If the time interval between exhalation and exhalation is 10 seconds or more, the judging unit 130 judges the abnormal breathing such as low breathing or apnea (S150). If the time interval of expiration is less than 10 seconds, normal breathing can be judged.

Then, the determination unit 130 measures the increase amount of the carbon dioxide concentration of the exhalation (S160). That is, if the increase in the concentration of carbon dioxide contained in the next exhalation is less than 5% of the concentration of the carbon dioxide contained in the first exhalation, it can be judged as low breathing.

If the concentration of carbon dioxide contained in the next exhalation is 5% or more higher than the concentration of carbon dioxide contained in the first exhalation, it can be judged as apnea.

The abnormal breathing determination result is displayed through the display unit 160 (S170). Here, even when it is judged as normal breathing, the result is displayed through the display unit 160.

On the other hand, if it is determined that apnea is detected, it is preferable that the apnea index is converted according to the following equation (1), and the apnea degree is informed to the examinee.

Figure 112015028253561-pat00001

The display unit 160 may notify the determination result (low breathing or apnea) determined by the determination unit 130 and the apnea index together.

The present invention can determine the abnormal breathing state (including low breathing or apnea) of the examinee by measuring the concentration of carbon dioxide contained in the exhalation of the examinee, grasping the abnormal breathing state of the examinee, The patient can be informed about the need for abnormal respiration therapy.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: Above the respiratory diagnostic device
110: Diagnostic unit main body 120: Carbon dioxide sensor
130: determination unit 160: display unit
BAT: Power supply

Claims (8)

A device for diagnosing an abnormal breathing symptom of a subject under sleep,
A diagnostic main body which is placed on the face of the sleeping subject;
A power supply unit for supplying power necessary for operation;
A carbon dioxide sensor disposed on the main body of the diagnostic apparatus and measuring the concentration of carbon dioxide contained in the exhalation of the examinee and outputting a corresponding signal;
A determination unit for analyzing the output signal of the carbon dioxide sensor to determine a sleeping breath or sleep apnea of the examinee;
A display unit for displaying a determination result of the determination unit;
A memory unit for storing a signal output from the carbon dioxide sensor; And
And an output terminal for externally outputting data stored in the memory unit,
In the diagnostic apparatus,
A unit body configured to cover both eyes of the examinee;
A fixed line disposed at both ends of the unit body to maintain the fixed state of the unit body,
A tension sensor disposed on the fixed line and measuring a tension of the fixed line and outputting a corresponding signal;
A timer for counting a predetermined time when the tension is less than a predetermined value; a power supply sensing unit for sensing whether the power supply unit is turned off; And a warning unit for outputting a signal for warning of the departure of the unit body, and a power supply cutoff unit for shutting down the operation of the power supply unit when the tension is less than a predetermined value using the output signal of the tension sensor.
delete delete delete Wearing an abnormal respiratory diagnostic device on the face of the subject;
Measuring the concentration of carbon dioxide contained in the exhalation of the subject to be examined while sleeping;
Measuring an interval of the exhalation;
Determining a sleep hypoventilation state or a sleep apnea state of the subject to be examined in accordance with an increase value of the concentration of carbon dioxide contained in the exhalation;
Displaying the determined sleep hypnotic state or sleep apnea state;
Detecting a departure of the abnormal respiratory diagnostic apparatus;
Stopping the progress of the step of measuring the concentration of carbon dioxide when the abnormal respiratory diagnostic apparatus is detached;
And notifying the stop of the concentration measurement step,
The sleep hypnotic state or the sleep apnea state may include:
The maximum value detection interval of the carbon dioxide concentration is 10 seconds or more,
If it is determined that the increase in the concentration of carbon dioxide in the exhalation and the next exhalation is less than 5%
The maximum value detection interval of the carbon dioxide concentration is 10 seconds or more,
If the increase in the concentration of carbon dioxide in the exhalation and the next exhalation is 5% or more, it is determined that the breathing state is the sleep apnea state,
When it is determined that the sleep apnea is in the sleep apnea state,
And calculating an apnea index according to the following equation (1).
[Equation 1]
Apnea index = (total number of times of total sleeping time / maximum detection of concentration of carbon dioxide)
delete delete delete
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4247758B2 (en) 2003-02-18 2009-04-02 日本光電工業株式会社 Carbon dioxide gas sensor
JP2013007677A (en) 2011-06-24 2013-01-10 Nippon Koden Corp Co2 sensor and co2 measuring device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59198A (en) * 1982-06-25 1984-01-05 中川　聖一 Pattern comparator
KR101057001B1 (en) * 2009-06-01 2011-08-16 (주)맨 텍 Sleep disorder response system through real time monitoring
KR20110053825A (en) * 2009-11-16 2011-05-24 (주)인포빌 A works monitoring system using the device for sencing of respiration

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4247758B2 (en) 2003-02-18 2009-04-02 日本光電工業株式会社 Carbon dioxide gas sensor
JP2013007677A (en) 2011-06-24 2013-01-10 Nippon Koden Corp Co2 sensor and co2 measuring device

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