JP4453431B2 - Biological information measuring device - Google Patents

Description

  The present invention relates to a biological information measuring device.

As biological information that is influenced by aging and disease, for example, there is biological information that reflects the state of blood vessels. As it is said that “humans age with blood vessels,” blood vessels age with age, but if there are diseases such as lifestyle-related diseases, aging of blood vessels accelerates more than age-related changes. It has been broken. As an index for quantitatively evaluating the state of the blood vessel, for example, there is arteriosclerosis. In recent years, as a method for easily measuring the degree of arteriosclerosis in a non-invasive manner, a measuring apparatus that performs functional diagnosis using a pulse wave analysis technique such as a pulse wave velocity or an acceleration pulse wave has been widespread.
In this apparatus, as shown in FIG. 7, for example, based on a single measurement result obtained by measuring the degree of arteriosclerosis at a certain time, it is possible to determine that there is no problem in the circulatory function because the risk value is not exceeded.

  Further, as disclosed in Japanese Patent Application Laid-Open No. 2000-157499, an apparatus has been devised that determines a blood pressure abnormality when a blood pressure change value exceeds a preset reference value. This apparatus is a device that continuously monitors blood pressure, and enables rapid treatment of a patient by detecting abnormal fluctuations in blood pressure.

However, in these technologies, in biological information that is affected by aging and diseases such as the degree of arteriosclerosis, whether the deterioration is due to physiological changes corresponding to aging, or is deterioration based on diseases? It only gives information that it cannot be determined and has deteriorated due to short-term changes in physical condition. Therefore, it has been difficult to provide appropriate feedback such as lifestyle guidance to the subject.
JP 2000-157499 A

  The present invention has been invented in view of the above-mentioned background art, and the problem is that it is possible to separate changes in biological information due to a disease from changes due to aging, and to the change due to the disease thus separated. It is to realize a biological information measuring device capable of appropriately performing health management by performing lifestyle guidance based on the above.

  In order to solve the above problems, in the biological information measuring device of the present invention, biological information detecting means for detecting biological information and information detected by the biological information detecting means can reflect the influence of aging. Biological information storage means for storing a certain period of time, a change amount calculating means for calculating the change amount of the stored biometric information, and a reference value for storing a reference value corresponding to aging with respect to the change amount It is characterized by comprising a storage unit and a disease estimation means for determining a change associated with a disease when the amount of change exceeds the reference value. In this case, as biological information, in particular, information related to cardiovascular function or pulse wave can be measured.

  According to such a configuration, it is possible to distinguish a change caused by a disease from a change due to aging, and thus it is possible to feed back to a measurer as information for health management.

  Further, personal information input means for inputting physical characteristics such as age and sex of the measured person, reference value selecting means for selecting the reference value for each characteristic such as age and sex of the measured person, and the amount of change On the basis of exceeding the selected reference value, it is possible to eliminate the effects of age, gender, etc., more accurately, if it is estimated that the change is associated with the disease in distinction from the change based on aging. Changes associated with disease can be isolated.

  According to the above invention, the amount of change in biological information measured a plurality of times over a certain period of time that can reflect the effects of aging is calculated, and the amount of change exceeds the reference value corresponding to aging. Objectively, it is possible to estimate that there is a possibility of deterioration due to the disease. In particular, in the measurement of cardiovascular functions including arteriosclerosis, early detection of diseases, prevention, and lifestyle guidance can be performed more effectively.

  The biological information measuring apparatus of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration example of the biological information measuring apparatus of the present invention. In this figure, reference numeral 1 denotes biological information detection means, and in this embodiment, particularly, means for detecting biological information affected by aging and disease. As the biometric information, biometric information related to cardiovascular function, autonomic nervous function, balance function, skin function, and the like can be considered. Then, the information detected by the biological information detection means 1 is stored by the biological information storage means 2. At this time, in addition to biological information, it is preferable to store subject information such as measurement date and time, age, and sex at the same time.

  Then, the change amount calculating means 3 calculates the change amount of the biological information. In the simplest example, the difference between the measurement result at a certain time and the previous value is calculated as the amount of change. Then, the calculated change amount and the reference value of the change amount set in advance in the reference value storage unit 4 are compared in the disease estimation means 5, and as a result, the calculated change amount is stored in the stored change. If the amount exceeds the reference value, it is estimated that the disease is worsening, and the result is displayed on the display 6.

  At this time, as the reference value of the change amount, a change amount corresponding to aging in a healthy person based on statistical data is used.

  In addition, a reference value for the amount of change should be provided at least at a time that allows an age-related change to be recognized in the measured biological information. More specifically, it is better to leave an interval of at least about one month, and it is preferable to see the change in units of three months to one year. At this time, for example, when viewing the change in units of one month, if the biological information is measured multiple times during the same month, the average value of the biological information data measured within the same month is calculated, and the average value is calculated. As a representative value for the same month, you can see the change. If it is a measuring device used for a health check once a year, a format in which the measurement results are stored for each subject and the change tendency in units of one year is judged is practical. In addition, in order to exclude numerical values due to changes in physical condition over a short period of time, if a value that is clearly considered above is detected by measuring several times during the month, the change trend should be determined by excluding this.

  FIG. 2 shows a graph in which changes in the degree of arteriosclerosis measured in this way are plotted on a monthly basis. In this graph, the reference value is shown as A on the right side, and the measurement months are a, b, c, d, and e. In this figure, since the change from c to d and from d to e exceeds the reference value A, it can be estimated that the deterioration is caused by the disease.

  In addition, if the output result of the measurement is a table showing the result of the health check, and the fact that there is a possibility of deterioration due to the disease, it is possible for the subject to be in danger even if the trend is not displayed in a graph. It can be notified that there is sex. In addition, by storing the measurement date and time as described above, in the biological information indicating the daily fluctuation, only the measurement result of the same time zone is selected, and it is estimated whether the deterioration due to the disease is based on the change amount of the measurement result. And a more reliable estimation result can be obtained. Similarly, if a means for storing before meal or after meal is provided in the measurement conditions, it is preferable that only the value before meal and the value after meal can be selected and evaluated. Further, regarding the amount of change, not only the difference between the measured values shown in FIG. 2 above, but also the rate of change, for example, may be used, and various numerical values are used as long as the change in value is quantitatively expressed. be able to.

  FIG. 3 shows, as an example, display contents with respect to different reference values in several stages. In this way, the reference value is provided in several stages, in this case, four stages, and even if there is a deterioration due to a disease, depending on each stage of the reference value, more specifically, the degree of the deterioration amount It is more preferable to display the set coping methods for the measurement subject, since appropriate coping can be performed according to the degree of deterioration.

  Furthermore, as the biological information, it is particularly desirable to use information related to the circulatory function, such as arteriosclerosis and blood pressure values. Cardiocerebral vascular disease is comparable to cancer as a cause of death, arteriosclerosis is said to be the largest cause of nursing care, and the arterial system is said to be the optimal aging index. It is said that all lifestyle-related diseases are targeted at blood vessels, and it can be expected that it will lead to the discovery and prevention of early diseases by grasping the state of blood vessels.

  In addition, by detecting and extracting the pulse wave, it is possible to easily measure non-invasively, such as the cuff pressure pulse wave of the limbs, the cuff pressure pulse wave of the upper arm or the wrist or the photoelectric pulse wave, the finger pulse This can be realized by various hardware configurations such as photoelectric pulse waves. Further, the degree of arteriosclerosis and blood pressure can be simultaneously measured by the configuration, and various information can be easily obtained.

  FIG. 4 is a block diagram showing a configuration example of a specific biological information measuring apparatus. In this apparatus, the biological information detection means 1 is configured by detecting a pulse wave, and includes, for example, a cuff 7, a pressure detection unit 8, a pressure control unit 9, a pulse wave detection unit 10, and a circulatory function estimation unit 11. Is done. The cuff 7 is attached in a state of being wound around the user's upper arm. The cuff 7 is pressurized by the pressure control unit 9 having a pressurizing pump for pressurizing the cuff 7 and an exhaust valve for depressurizing the cuff 7 to compress the upper arm, for example, once measured In the process of increasing the pressure to a predetermined target pressure higher than the expected systolic blood pressure value and then reducing the pressure at a very low speed, a pressure signal is detected by the pressure detection unit 8 including a pressure sensor, and the obtained pressure signal is converted to A / The pulse wave signal is detected by the pulse wave detection unit 10 having a predetermined filter after D conversion. In the circulatory organ function estimation unit 11, the blood pressure value can be estimated from the time-series change pattern of the pulse wave by a generally known oscillometric method. Furthermore, it is said that the state of the heart and blood vessels is reflected in the shape of the pulse wave. By extracting predetermined parameters related to arteriosclerosis from the shape of the pulse wave, the degree of arteriosclerosis is estimated. For example, information related to the cardiovascular function can be extracted. Using the biological information thus obtained, as described above with reference to FIG. 1, the change amount calculating means 3 calculates the change amount of the blood pressure value and the degree of arteriosclerosis, and the disease estimating means 5 When the reference value set in advance in the reference value storage unit 4 is exceeded, the display 6 indicates that there is a possibility of deterioration due to a disease other than aging.

  Further, in the apparatus shown in the block diagram of FIG. 5, in addition to the above-described aspects, personal information input means 12 for inputting physical characteristics such as age and sex of the person to be measured, and age and sex of the person to be measured. A reference value selection means 13 for selecting the reference value for each characteristic, and a disease estimation means 5 for estimating deterioration due to the disease based on the change amount exceeding the selected reference value. ing. According to such a configuration, the disease can be estimated more accurately in consideration of the age and sex of the subject.

  FIG. 6 is a graph showing an example in which the reference value is set for each age. As shown in this figure, if the reference value is increased as the age increases, it is possible to detect the deterioration associated with the disease for each age. In coronary artery disease related to vascular condition, mortality and incidence are known to increase from 45 years for males and 55 years for females. Since the amount of change is different, it is preferable to select the reference value depending on the sex of the person being measured.

It is a block diagram which shows the example of 1 structure of the biometric information measuring apparatus of this invention. It is the graph which plotted the change of the arteriosclerosis degree measured by one Embodiment of the same biological information measuring device on a monthly basis. It is the figure which illustrated the display content with respect to a different reference value as a table | surface in one Embodiment of the biometric information measuring device. It is a block diagram which shows the example of 1 structure of the biometric information measuring device. It is a block diagram which shows the example of 1 structure of the biometric information measuring device. It is a graph which shows the example which set the reference value different for every age in the same biological information measuring device. It is a graph explaining a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Biological information detection means 2 Biological information storage means 3 Change amount calculation means 4 Reference value memory | storage part 5 Disease estimation means 6 Indicator 7 Cuff 8 Pressure detection part 9 Pressure control part 10 Pulse wave detection part 11 Cardiovascular function estimation part 12 Individual Information input means 13 Reference value selection means

Claims (3)

  Biological information detection means for detecting biological information, biological information storage means for storing information detected by the biological information detection means for a certain period of time that can reflect the influence of aging, and thus stored. A change amount calculating means for calculating a change amount of biometric information, a reference value storage unit for storing a reference value corresponding to aging with respect to the change amount, and a change accompanying a disease when the change amount exceeds the reference value. A biological information measuring apparatus comprising a disease estimation means.   The biological information measuring apparatus according to claim 1, wherein a pulse wave is detected as the biological information.   Personal information input means for inputting physical characteristics such as age and sex of the person to be measured, and reference value selection means for selecting the reference value associated with the personal information, and the change amount is thus selected The biological information measuring apparatus according to claim 1, wherein the disease estimation means determines whether or not the determined reference value is exceeded.

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