JP2007029258A5 - - Google Patents

Description

Lung function testing device

The present invention relates to a pulmonary function test apparatus, and in particular, an object of the present invention is to provide a technique for performing accurate measurement and displaying the results in an easily understandable manner.

Pulmonary function tests include a ventilation function test that examines the entry and exit of gas into the lung, and a gas exchange function test that examines the exchange of oxygen and carbon dioxide between gas and blood in the lung. It relates to the ventilation function test.

In the ventilation function test, as shown in FIG. 10, a respiratory filter 102 and a mouthpiece 103 are connected to a respiratory flow meter 101, the mouthpiece 103 is held in the mouth, a predetermined breath is performed, and the respiratory flow at that time is measured. Various parameters, such as lung volume fraction examination and flow volume examination.

As shown in Fig. 11, the lung volume fractionation test is as follows: Rest breathing, followed by a slow call to the maximum expiratory position (maximum expiratory position), followed by the maximum inspiratory position (maximum inspiratory position) It is a test to inhale.

As shown in FIG. 12, the flow volume test is a test in which after taking a rest breath and then inhaling to the maximum inspiratory position, the maximum effort is made at once and a call is made to the maximum expiratory position. In the figure, the vertical axis represents the flow (l / sec) and the horizontal axis represents the volume (l).

The test result parameters include ID data such as sex, age, and physique, predicted values predicted from the ID data, calculated values calculated from the measured values and predicted values, in addition to the actual measured values.
For example, the 1 second rate (calculated value) obtained from the ratio between the measured 1 second amount and the forced vital capacity, the% 1 second amount (calculated value) obtained from the measured 1 second amount and the predicted value, and the vital capacity There is% vital capacity (calculated value) obtained from the ratio between the actual measurement value and the predicted value.

One of the major purposes of pulmonary function tests is to distinguish obstructive and restrictive ventilation disorders. This can be done with flow volume inspection.

Obstructive ventilation disorders are those in which the passage of air from the airways to the alveoli becomes narrow due to inflammation and the like, and the entry and exit of air is inhibited, and diseases such as bronchial asthma and emphysema are included.
If the 1-second rate is 70% or less, it is judged as obstructive ventilation disorder.

Restrained ventilatory disorder is a decrease in the elasticity of the entire lungs and decreases in ventilation function, and includes interstitial pneumonia and pulmonary fibrosis.
If the% vital capacity is 80% or less, it is determined as restrictive ventilation disorder.

Ventilation dysfunction, as shown in Fig. 14, takes% vital capacity and 1-second rate on the vertical and horizontal axes, and draws a straight line with 70% of 1-second rate and 80% of vital capacity, normal, obstructive, It is often shown in a diagram divided into four compartments: restricted and mixed.
By plotting the actual measurement values in this table, the type and degree of the disease can be determined at a glance.
Inspection reports are often accompanied by this ventilation dysfunction classification table (Patent Document 1, etc.).

Among pulmonary diseases, in particular, chronic obstructive pulmonary disease (COPD) has attracted attention recently. This is a chronic inflammatory disease of the respiratory tract, and while other diseases such as other cerebrovascular disorders and heart diseases are decreasing, this disease alone is increasing the number of patients and deaths worldwide. Therefore, GOLD (Global Initiative For Chronic Obstructive Lung Disease) has set a diagnostic standard, and Japan has come to be widely used in clinical practice based on this standard.
GOLD classifies the stage of COPD into five stages as shown in FIG. 13 (A) using the 1 second rate and the% 1 second rate. This is shown in FIG. 13B. In many cases, the inspection results are plotted and reported in this figure (Non-patent Document 2).

Thus, in the ventilatory dysfunction, both the ventilatory dysfunction classification table of FIG. 14 and the GOLD classification table of FIG. 13 have come to be used together.
The following is described with reference to the drawings.
Japanese Patent Publication No.57-20815 Guidelines for Diagnosis and Treatment of COPD (Chronic Obstructive Pulmonary Disease) Japan Respiratory Society COPD Guidelines Second Edition Edition

FIG. 11 shows an example of lung volume fraction examination. As shown in the figure, this test consists of resting breathing, followed by a slow call to the maximum expiratory position (maximum expiratory position), followed by inspiration to the maximum inspiratory position (maximum inspiratory position), and again Call up to the maximum expiratory position and measure the breathing at this time.
In this examination, as shown in FIG. 11 , measurements relating to lung volume such as tidal volume and vital capacity can be performed. Tidal volume is the amount of gas that enters and exits the lungs in a single breath during rest breathing, and vital capacity is the amount of gas that enters and exits the lungs between the maximum inspiratory position and the maximum expiratory position.

FIG. 12 shows an example of flow volume inspection. The test is performed after inspiring to the maximum inspiratory position after resting breathing, and then calling to the maximum expiratory position at a stretch with the maximum effort, and measuring the respiratory flow at this time.
In the figure, the vertical axis represents the flow (l / sec) and the horizontal axis represents the volume (l).
This test can measure peak flow, 1-second dose, and forced vital capacity. The peak flow is the maximum value of the flow rate at the time of the maximum effort call, the amount of 1 second is the amount of gas called in 1 second from the start of the call, the forced vital capacity is the total expiratory volume when the forced call is made from the maximum inspiratory position to the maximum expiratory position. is there.
Display may be the relationship between the volume time.

FIG. 14 is an example of a ventilation dysfunction classification table. The figure shows normal, obstructive disease, restrictive disease, and mixed disease with a 1-second rate on the vertical axis and% vital capacity on the horizontal axis, and a straight line with a 1-second rate of 70% and% vital capacity of 80%. Divided into four compartments.
Often, the actual values of 1 second rate and% vital capacity are plotted (x), and the type and degree of the disorder are reported at a glance.

FIG. 13 shows GOLD staging. As shown in FIG. 13 (A), GOLD classifies the stage of COPD into five stages using a 1-second rate and a 1-second amount. Taking the % 1-second amount and the 1-second rate on the vertical and horizontal axes, the stage can be divided into five compartments as shown in Fig. (B). The stage and its extent can be confirmed at a glance.

As shown in Fig. 11, in the lung volume fraction test, after slowly breathing, after slowly calling to the maximum expiratory position, slowly inhaling to the maximum inspiratory position, then calling to the maximum expiratory position, and breathing during that time Measure the airflow.
However, if a cough occurs during breathing or if the throat is caught and a dip occurs as shown in Fig. 1 (B) , this is also judged as exhalation and inspiration, and a large error occurs in the value of the tidal volume, etc. there is a possibility.
Since respiratory diseases are examined, a small flow rate can be measured. However, when abnormal breathing such as cough is mixed, it may be difficult to distinguish between normal and abnormal breathing.
It is a first object of the present invention to eliminate such errors and enable accurate inspection.

The flow volume test is a test in which, after taking a rest breath, inhaling to the maximum inspiratory position, then calling up to the maximum expiratory position with maximum effort. It is important to make every effort in this inspection, which directly affects the quality of the data, such as the reproducibility and accuracy of the data.

For this reason, standards are set by medical societies for determining whether a subject has made maximum effort. The content is
Whether the effort at the start of the call was appropriate Whether the call was continued for more than 6 seconds or whether reproducibility was ensured in multiple calls
The number of measurements satisfying both the total number of inspections and both (1) and (2) is, for example, and the latest apparatus has a function of checking these efforts for the most part.

However, the measurement data obtained by the flow volume inspection is a huge amount. In contrast, effort check results tended to be considered supplementary. For this reason, the effort check result is not displayed on the screen or is displayed in a small corner even if it is displayed.
In such a case, when it is desired to see the result of checking the effort level, it is necessary to search for the display on the screen or to call it by operating the key when not displaying it.
That is, it cannot be determined at a glance whether or not the inspection result is reliable, or a troublesome confirmation work of searching for and confirming this is necessary.
The second object of the present invention is to determine whether or not the effort at the time of inspection is sufficient, and to display this in an easily understandable manner.

As described above, in the flow volume inspection, an enormous amount of data is displayed on a screen of many pages, but there is no display that allows the conclusion of the inspection to be understood at a glance.
The third object of the present invention is to display the judgment result of the screened disease so that it can be seen at a glance.

The invention of claim 1 makes it possible to obtain accurate data even when a dip occurs due to coughing during the lung volume fraction examination,
N-th exhalation volume TVEn and exhalation time TEn, and the product TVEn × TEn
The n-th intake air volume TVIn and the intake time TIn , and the product TVIn × TIn
Is measured in all breaths,
Calculate the mean of the product,
Delete those with extremely small product values,
If the product value is above average, delete it,
From the remaining data, take only the data within the specified range from the average value,
I took several data from them and made them resting breathing data.

In the invention of claim 2, an effort call is made correctly until the end, and even when the flow or volume is small, this can be confirmed well, and a sufficient effort call can be made until the end. In order to enable an accurate inspection, when the flow or volume value becomes a predetermined value or less during the flow volume inspection, the value is enlarged and displayed.

In the invention of claim 3, it is determined whether the effort at the start of the effort call is good or not so that the effort at the start of the call can be confirmed at a glance by the flow volume inspection, The judgment result is displayed on the judgment bar provided.

In the invention of claim 4, the time after the start of the forced call is measured so that it can be confirmed at a glance whether the forced call time is sufficient in the flow volume inspection, and whether or not the call time is sufficient. The judgment result is displayed on the judgment bar provided on the display.

In the invention of claim 5, the reproducibility of the flow volume inspection performed several times is determined so that the reproducibility can be confirmed at a glance, and the determination result is displayed on the determination bar provided on the display. Displayed.

In the invention of claim 6, the stage provided by the GOLD standard is determined from the data obtained by the flow volume test so that the stage according to the GOLD standard can be confirmed at a glance. This judgment result is displayed on the bar.

In the invention of claim 7, the type of ventilation dysfunction is determined from the data obtained by the flow volume test and the lung volume fraction test so that the type of ventilation dysfunction can be confirmed at a glance. This determination result is displayed on a determination bar provided on the vessel.

The invention of claim 8 is for making the determination bar described in claims 3 to 7 and claim 10 easier to see, and is provided with a display area for displaying the determination bar on a part of the measurement result screen. One or a plurality of determination bars of the determination bars described in claims 3 to 7 are displayed.

In the invention of claim 9, in order to improve the operability and make the screen easy to see,
Using a touch panel type display device, the tab area for displaying a tab for selecting a measurement mode in a part of the display provided, pressing the tabs of a measurement mode enters the measurement result display screen in the measurement mode, the measurement result display In addition to the tab area, the screen is assigned to a curve display area, a numerical data display area, a judgment bar display area, and the like.
In the invention of claim 10, a flow volume test, look at the efforts of a call out time at call initiation, efforts of the both, it is determined whether there was adequate, displays the determination result to the determination bars provided on the display device I tried to do it.

According to the first aspect of the present invention, at the time of lung volume fraction examination, even if a dip occurs due to cough or the like during the examination, unnecessary data is excluded and only necessary rest breathing data is measured. Therefore, accurate data can be obtained.

According to the second aspect of the present invention, when the flow or volume value becomes a predetermined value or less during the flow volume inspection, the value is enlarged and displayed.
Therefore, it is possible to verify may be less flow or volume of the near between call termination, until the end it is possible to perform a sufficient effort calls. In the past, the flow or volume was reduced, and the examination was terminated when it was determined that the inspector had made a sufficient call. there were. This error is reduced by the present invention.

According to the invention of claim 3, at the time of the flow volume inspection, whether or not the call is made with sufficient effort to start the effort call is evaluated by the degree of the rise of the flow, etc., and the degree of effort at the time of the call is judged and displayed. The determination result is displayed on the determination bar provided on the vessel.
Therefore, it can be confirmed at a glance whether or not the effort at the start of the call is appropriate, and highly reliable data can be obtained.

According to the invention of claim 4, during the flow volume inspection, the time after the start of the effort call is measured, it is determined whether or not the call time is sufficient, and the determination result is displayed on the determination bar provided on the display.
For this reason, it can be confirmed at a glance whether the effort call time is sufficient, and highly reliable data can be obtained.

According to the invention of claim 5, it is determined whether or not the reproducibility of the flow volume inspection performed a plurality of times is good, and the determination result is displayed on the determination bar provided on the display.
Therefore, the reproducibility can be confirmed at a glance, and highly reliable data can be obtained.

According to the invention of claim 6, the stage is determined based on the GOLD standard from the data obtained by the flow volume test, and the determination result is displayed on the determination bar provided on the display.
Therefore, Ru can be confirmed at a glance staging based on the standard of GOLD.

In the invention of claim 7, the type of the ventilatory dysfunction is determined from the data obtained by the flow volume test and the lung volume fraction test , and the determination result is displayed on the determination bar provided on the display.
For this reason, Ru can check the type and degree of ventilation dysfunction at a glance.

According to the invention of claim 8, a display area for displaying a judgment bar is provided on a part of the measurement result screen, and one or a plurality of judgment bars of the judgment bar according to claims 3 to 7 and claim 10 are provided. Is displayed.
According to the invention described in this claim, since the determination bars described in claims 3 to 7 and 10 are collectively displayed at a predetermined position, the measurement data, the effort, the type of ventilation disorder, and the GOLD Stage determination results can be confirmed at a glance. For this reason, it is possible to confirm at a glance whether the measurement data is reliable and the type and degree of the disease.

In the invention of claim 9,
Using a touch panel display,
Provided the tab area for displaying a tab for selecting a measurement mode in a part of the display,
Press the tab for a measurement mode to enter the measurement result display screen for that measurement mode.
In addition to the tab area, the measurement result display screen is assigned to a curve display area, a numerical data display area, a judgment bar display area, and the like.
The operation is improved by simply tapping the mode selection tab at a predetermined position. Further, since various data are displayed at predetermined positions, they are very easy to see. Since the measurement result is displayed on the determination bar at a predetermined position, the reliability of the data and the determination result can be confirmed at a glance.
In the invention according to claim 10, it is determined whether or not sufficient efforts are made by looking at both the effort level at the start of the call and the effort level indicating whether the effort has been made for a predetermined time or more. And displayed in a determination display area provided on the screen. For this reason, both the effort at the start of the call and the call effort time can confirm at a glance the number of examinations in which the effort is sufficiently made.

The invention of claim 1 is a lung volume fraction test,
N-th exhalation volume TVEn and exhalation time TEn, and the product TVEn × TEn
The n-th intake air volume TVIn and the intake time TIn , and the product TVIn × TIn
Is measured in all breaths,
Calculate the mean of the product,
Delete those with extremely small product values,
If the product value is above average, delete it,
From the remaining data, take only the data within the specified range from the average value,
Among them, a pieces of data are taken as resting respiration data.

Since the expiratory volume and expiratory time of each breath and the inspiratory volume and the inspiratory time are measured, and the two-dimensional volume of volume × time is used as an index, appropriate data and inappropriate data can be correctly distinguished , Only relevant data can be obtained. For this reason, even if a dip due to cough or the like occurs during measurement, it can be excluded as an abnormality. Since the vital capacity VC can be easily separated, the lung volume fraction examination can be accurately performed. .

In the past, air volume was measured over time, and one-dimensionally appropriate data and inappropriate data were separated from the amount and wind direction. In respiratory diseases, the volume may be small, so we can measure small breaths. For this reason, if a dip occurs due to coughing or the like, it cannot be distinguished from normal breathing.

In contrast, the use of the algorithm of the invention of this claim, wherein the gas amount × time, since it is determined by the area of the example TVE n × Te n 1, subtle differences in the data is expanded, readily identified The accuracy of eliminating inappropriate data is improved in each stage.
Actually, take several breaths or more, then perform maximum inspiration and maximum expiratory breathing, measure the volume and time of each exhalation and inspiration, and then measure the product of the volume of each breath × the breathing time , Eliminate data with extremely small product values (dip data) and large data (spiratory capacity data), average the rest breathing data, leave the necessary number of data close to the average value, Use resting breathing data.
Even during rest breathing, the expiratory position and the inspiratory position vary somewhat, so only those with small variations are taken. Thereby, tidal volume etc. can be measured correctly.

According to the second aspect of the present invention, when a flow or volume value becomes a predetermined value or less during flow volume inspection, the value is enlarged and displayed.
Becomes a near-between call finished, the flow decreases, also decreases the change in volume. For this reason, it may be determined that the call has ended even though it has not been called to the end, and the inspection may be ended. In this case, an error occurs in the measurement result.
According to the invention of the claims, wherein the flow or volume becomes close between call termination is also smaller, and displays the enlarged flow range automatically, for example, 10 times. For this reason, since changes in flow and volume are emphasized, it can be called up to the end, and accurate measurement with little error becomes possible.
Actually, the flow range of the flow volume curve is expanded and a flow bar is provided as shown in FIG. 2 to expand the flow.
This figure shows an example in which the flow is enlarged, but the volume may be enlarged and displayed.
Further, there is no need to provide a flow bar, and the entire curve screen or a part thereof may be enlarged.

In the flow volume inspection, the quality of the effort at the start of the effort call is determined, and the determination result is displayed on the determination bar provided on the display unit on the inspection result screen.

As described above, the determination of the effort at the start of the effort call is determined by the ATS and the Japanese Respiratory Society in order to obtain highly reliable data. This determination of the degree of effort has been made conventionally. This can be done by evaluating the degree of rise of the flow volume curve. Conventional as well, the result of this determination was known Rukoto can.
However, it was necessary to operate the keys to call up and display the determination results. Or it was buried in other information and displayed, so it was necessary to search on the screen, and the display itself was difficult to see. That is, at the end of the examination, it was impossible to confirm at a glance whether the effort level at the start of the effort call was good. For this reason, it was necessary to take time and effort to check the result of the inspection and to check the result of determination of the degree of effort at the start of the effort call.

According to the invention described in this claim, along with the inspection result, the quality of the effort at the start of the effort call is displayed at a predetermined position. In other words, when the screen is the result of the inspection, the degree of effort at the start of the call is displayed at the display position of the predetermined determination bar together with the FVC curve data and numerical data.
Therefore, the measurement data can be confirmed at a glance, and it can be immediately judged whether or not the data is reliable. It is also effective for accuracy control, saving labor for the examiner, and effective for correct diagnosis.

The invention according to claim 4 measures the time after the start of the effort call at the time of the flow volume inspection, determines whether or not the call time is sufficient, and displays the determination result on the determination bar provided on the display.

This effort determination is also defined by ATS and the Japanese Respiratory Society.
For this reason, this function has been used in the past.
However, the determination result is not displayed on the measurement result screen or is buried in a lot of information. For this reason, as described in the embodiment of the invention of claim 3, this index is also difficult to see, or there is a disadvantage such as requiring a key operation to see, and the inspection result and its reliability are confirmed at a glance. There was no one had to.

According to the invention described in the present claim, the degree of effort of the calling time is displayed together with the inspection result, it is determined whether the calling time is sufficient, and the determination result is set at a predetermined position, for example, good or bad. ,Is displayed.
Therefore, the inspection data can be confirmed at a glance, and it can be simultaneously determined whether or not the data is reliable. It is also effective for accuracy control, saving labor for the examiner, and effective for correct diagnosis.

The invention of claim 5 determines whether the reproducibility of the flow volume inspection performed a plurality of times is good, and displays the determination result on a determination bar provided on the display.
This determination is also determined by ATS and the Japanese Respiratory Society.
For this reason, this function has been used in the past.
However, the determination result is not displayed on the measurement result screen or is buried in a lot of information. For this reason, as described in the embodiment of the invention of claim 3, this index is also difficult to see, or there is a disadvantage such as requiring a key operation to see, and the inspection result and its reliability are confirmed at a glance. Did not go to.

According to the invention described in this claim, along with the inspection result, it is determined whether the reproducibility of the plurality of inspections is good or not, and this determination result is displayed on the determination bar at a predetermined position, for example, as good or bad.
Therefore, the inspection data can be confirmed at a glance , the reproducibility can be confirmed at a glance, and it can be simultaneously judged whether or not the data is reliable. It is also effective for accuracy control, saving labor for the examiner, and effective for correct diagnosis .

The invention according to claim 6 determines the stage based on the GOLD standard from the data obtained by the flow volume test, and displays the determination result on the determination bar provided on the display.
Criteria GOLD is known, also the table of stage table and drawing stages, as shown in FIG. 1 3 (A) (B) are used.
However, the determination result is not displayed on the measurement result screen or is buried in a lot of information. For this reason, as described in the embodiment of the invention of claim 3, this index is also difficult to see, or there is a disadvantage such as requiring a key operation to see, and the inspection result and its reliability are confirmed at a glance. There was no one had to.

According to the invention of the claims, wherein, with test results, the stage of disease based on the criteria of GOLD was determine constant, as the determination result for example stage 2, and displays the determined bar position. In the judgment bar, any one of stage 0 to 4 or normal may be displayed.
For this reason, it is possible to see at a glance the inspection data, what stage the patient is seen at the same time. It saves the labor of the examiner and is effective for correct diagnosis.

In the invention of claim 7, the type of the ventilation function disorder is determined from the data obtained by the flow volume inspection, and the determination result is displayed on the determination bar provided on the display.
From the test results, the table of FIG. 14 showing the type and degree of ventilation dysfunction has been used conventionally.
However, the determination result is not displayed on the measurement result screen or is buried in a lot of information. For this reason, as described in the embodiment of the invention of claim 3, this index is also difficult to see, or there is a disadvantage such as requiring a key operation to see, and the inspection result and its reliability are confirmed at a glance. There was no one had to.

According to the present invention, the type and degree of the ventilatory dysfunction are obtained together with the test result, and from this result, for example, it is determined as an obstructive disorder, and this is displayed on a determination bar at a predetermined position.
What is necessary is just to display on a judgment bar so that any of obstruction | occlusion property, restraint property, mixing property, and normal may be identified. For example, it may be displayed as a closed value, a symbol, a mixed value, a positive value, or a numerical value or symbol corresponding thereto.
Therefore, the examination data can be confirmed at a glance, and the patient can confirm at a glance what kind of ventilation disorder the patient has. It saves the labor of the examiner and is effective for correct diagnosis.

In the invention of claim 8, provided with a stamp constant bar display area on the display screen of the flow volume test result, at least in the judgment bar described in this determination bar display area claims 3 to claim 7 and claim 10 A single judgment bar is displayed.
Conventionally, the judgment result of the call effort, the type and degree of the ventilatory dysfunction, and the staging result based on the GOLD criteria are displayed or stored in different places, and these can be viewed together with the test result at the same time. There wasn't.
According to the present invention described in this claim, together with the flow volume curve and numerical data, the determination result of the effort level, the type, degree of ventilation disturbance, and the stage based on the GOLD criteria are displayed at the same time at the same time. Along with the inspection data, the reliability of the data and the degree and type of the disease can be confirmed at a glance on one screen.
For this reason, labor of the examiner is saved, and it is effective for correct diagnosis.

The invention of claim 9, better operability, it relates to easily display technology understand the test results.
The screen is divided into a curve display area, a numerical data display area, an operation tab display area, a determination bar display area, etc., and the data is displayed in a predetermined area for easy viewing.
Further, by using a touch panel type display device, provided with a tab area for displaying a tab for selecting a measurement mode in a part of the display, and easy to operate.
By simply tapping the tab of a certain measurement mode, the measurement result display screen for that measurement mode can be entered. In addition, the measurement result can be displayed.
Since the measurement result display screen is allocated to a curve display area, a numerical data display area, a determination bar display area, and the like in addition to the tab area, it is very easy to see.
Efforts degree during testing than is displayed at a predetermined position determination bars, the reliability of the data can be judged at a glance.
Since it can be determined at a glance whether the measurement result is highly reliable together with the measurement data, the determination result can be confirmed at a glance.

In the invention of claim 10, at the time of the flow volume inspection, both the effort at the start of the effort call and the effort as viewed from the effort call time are both counted, and both count the number of examinations in which sufficient effort is made. , display the this number on the screen of the test result, the determination bars provided on the display.
As described above, the determination of the effort level at the start of the effort call is based on how many times the highly reliable inspection is performed by ATS or the invention described in this claim in order to obtain highly reliable data. You can check at a glance just by looking at the judgment bar.

2 is a diagram of the measurement principle of the invention according to claim 1. FIG. The invention described in claim 2 is an example showing a state of enlarge Furoba chromatography. It is an example of the determination bar of the effort at the start of measurement of the invention according to claim 3. It is an example of the determination bar of the effort level seen from the calling time of the invention of claim 4. It is an example of the reproducibility judgment bar of the invention according to claim 5. It is an example of the staging bar based on GOLD of the invention described in claim 6. It is an example of the determination bar | burr of the ventilation function disorder | damage | failure of invention of Claim 7. It is an example of the area | region which shows the determination bar display area of invention of Claim 8. It is an example of the measurement result display screen of invention of Claim 9. It is an example of a flow meter, a filter, and a mouthpiece used in a pulmonary function test. It is a figure of a lung volume fraction. It is an example of a flow volume curve. It is the staging (A) based on the GOLD criteria and its table (B). It is a table | surface showing the kind and grade of ventilation dysfunction. It is an example of the judgment bar which displays the number of times that sufficient efforts are made at both the start of the call and the effort call according to the invention of claim 10.

Explanation of symbols

TVI: Inspiratory volume TI: Inspiratory time TVE: Expiratory volume TE: Expiratory time 41: Effort call start effort determination bar 32 determination bar display area 51: Call time effort determination bar 61: Reproducibility determination bar 71: Disease caused by GOLD Period determination bar 81: Ventilation dysfunction determination bar 81 ′: Determination bar display area 82 ′: Display screen 91: Measurement mode selection tab 92: Determination bar 93: Measurement curve display area 94: Measurement numerical data display area 95: Display screen 101 : Flow meter 102: Filter 103: Mouthpiece

Claims (10)

In pulmonary function testing equipment that performs predetermined breathing, measures the respiratory flow rate at that time, and performs lung volume fraction examination and flow volume examination,
After performing a resting breath, this is followed by a lung volume fraction test that slowly calls to the maximum expiratory position (maximum expiratory position) and then inhales to the maximum inspiratory position (maximum inspiratory position)
Air amount of the n-th breath TVEn and expiration time TEn, and its product TVEn × TEn,
The n-th intake air volume TVIn, the intake time TIn, and the product TVIn × TIn
Is measured in all breaths,
Calculate the mean of the product,
Delete dip data whose product value is extremely smaller than the average value ,
Delete the vital capacity data for which the product value is greater than the mean value ,
Take only the resting breath data that is within the specified range from the average,
Lung function testing device that selects the required number from the data and uses it as resting respiration data. In pulmonary function testing equipment that performs predetermined breathing, measures the respiratory flow rate at that time, and performs lung volume fraction examination and flow volume examination,
After quiet breathing, after intake up suction position, once, and the maximum efforts, maximum expiratory position calls for flow volume inspection until, to display an enlarged call near the end of the flow or volume range Pulmonary function testing device. An effort call determination bar that displays the effort level at the start of the effort call is provided on the flow volume inspection result screen,
A lung function test apparatus in which a degree of effort at the start of an effort call is determined by a standard at a medical association in a flow volume test, and the determination result is displayed on an effort call determination bar. Provide a call time judgment bar to display the effort call time on the flow volume inspection result screen,
A pulmonary function testing apparatus that measures an effort call time by flow volume test to determine a call effort level and displays the determination result on a call time judgment bar. A reproducibility pass / fail judgment bar that displays reproducibility pass / fail on the flow volume test result screen is provided.
A lung function testing apparatus that compares the results of flow volume tests performed multiple times to determine whether the reproducibility is good or not, and displays the determination results on a reproducibility good / bad determination bar. A GOLD staging bar that displays staging results based on GOLD criteria on the flow volume test results screen is provided.
A lung function testing device that determines a stage based on a GOLD standard from data obtained by a flow volume test and displays the determination result on a GOLD stage determination bar . Ventilation dysfunction determination bar that displays the type of ventilation dysfunction on the flow volume test result screen,
A pulmonary function testing device that determines the type of ventilation dysfunction from data obtained by flow volume testing, and displays the determination result on the ventilation dysfunction determination bar . A judgment bar display area is provided on the flow volume test result display screen, and at least one of the judgment bars according to claims 3 to 7 is displayed in the judgment bar display area. . In pulmonary function testing equipment that performs predetermined breathing, measures the respiratory flow rate at that time, and performs lung volume fraction examination and flow volume examination,
Use a touch panel display for the display, and provide an area for displaying a tab for selecting the measurement mode on the display.
When you press the tab of a measurement mode, you can enter the initial screen of that measurement mode and start measurement as it is.
After measurement, move to the measurement result display screen,
Measurement result display screen of a measurement mode, the tab area, the curve display area, numerical data display area is divided into determine the constant bar display area, know easily Pulmonary function testing apparatus to display. In the flow volume test, the number of tests that satisfy both the test with sufficient effort at the start of the effort call and the test with sufficient effort call time is obtained, and the result is displayed on the judgment bar provided on the display. Pulmonary function testing device.