JP3495319B2 - Cardiac function monitoring device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cardiac function monitoring device which contributes to the health management of a subject by measuring the cardiac reserve and recognizing the state of the cardiac reserve.

[0002]

2. Description of the Related Art Conventionally, various devised devices have been developed for measuring the heart rate of a subject and monitoring the condition. For example, in Japanese Patent Laid-Open No. 5-293089, an input unit for inputting subject information such as age, a heart rate detecting means for detecting a heart rate of a subject during exercise, and a subject's information based on the subject information input from the input unit. CP for calculating the maximum heart rate and the exercise load applied to the subject during exercise from the maximum heart rate and the heart rate from the heart rate detecting means
An apparatus having U and a display unit for displaying the exercise load degree in a bar graph is disclosed, and the apparatus can display the strength of exercise with respect to the maximum heart rate.

However, when performing rehabilitation for the purpose of returning to society, jogging for the purpose of promoting health, exercises such as marathon and golf, and sports training, the heart function and body condition of the subject are accurately recognized. For this reason, it is not enough to simply measure the heart rate, and exercise exceeding the cardiac reserve may lead to accidents such as sudden death.Therefore, it is possible to monitor the cardiac reserve by measuring the cardiac reserve. It becomes important.

The cardiac reserve cannot be recognized only by measuring the heart rate, and it is necessary to measure the cardiac reserve during exercise or the like in order to monitor the cardiac reserve. Therefore, it is impossible to measure the cardiac reserve and monitor the cardiac reserve with a device that simply measures the heart rate, such as the one disclosed in Japanese Patent Laid-Open No. 5-293089.

On the other hand, from the viewpoint of physiological theory, the heart intermittently sends blood to the blood vessel, and the stroke volume of this blood creates a continuous pulse wave due to the elasticity of the blood vessel. The shape of the pulse wave not only corresponds to the pulse rate (heart rate),
It is divided into phases corresponding to the systole and diastole of the heart. Therefore, the pulse wave shape includes not only physical property information of blood vessels but also heart function information such as heart rate, systolic force, and cardiac output.

Up to now, the pulse wave shape of the living body has been measured as a volume pulse wave and a pressure pulse wave by the sensing method.
Among the measurement of the volume pulse wave, the pulse wave measurement of the fingertip volume pulse wave,
The volume change of the detected part is measured by a photoelectric conversion element. The fingertip volume pulse wave can continuously measure the pulse wave, but there is a drawback that there is little cardiac function information due to the pressure pulse wave of the arterioles. Especially, if there is arteriosclerosis on the central side of the measurement site. The measured information cannot accurately measure even the pulse rate.

On the other hand, the pressure pulse wave is photoelectric conversion, air pressure conversion,
Although pulse waves of arterioles and arterioles can be measured by a method such as AC resistance conversion, there is nothing that can be used for measurement during operation over a long time because the device is lightweight. Also, in non-invasive measurement of intravascular arterial pressure pulse wave, many use Korotov's sound, but this is often used for continuous measurement for a long time because the cuff is pressurized by a compressor intermittently. There are technical difficulties.
Similarly, the invasive measurement that is performed in the clinical setting is also performed by the insertion and monitoring of the catheter by the doctor.
It is more difficult to use for continuous measurement for a long time.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to accurately and non-invasively and continuously recognize the cardiac reserve of a subject who is exercising. It is an object of the present invention to provide a cardiac function monitoring device capable of monitoring force and managing a good health condition of a subject.

Another object is to monitor the heart function which can be easily worn on the chest, arms, wrists, etc., is light in weight, does not impose a burden on the worn subject, and is unconstrained and excellent in the comfort of the subject to be worn. The purpose is to provide a device.

[0010]

The cardiac function monitoring apparatus of the present invention is equipped with at least measuring means, arithmetic means, control means, storage means, and information providing means, and is portable, and is capable of performing measurement due to displacement of blood vessel wall. The value is continuously measured, the blood vessel wall displacement is calculated from the measured value, and a predetermined parameter value capable of recognizing the cardiac reserve is calculated based on the continuously calculated value of the blood vessel wall displacement,
It is characterized in that it is determined whether or not the predetermined parameter value is within a set standard range, and information is provided based on the predetermined parameter value being outside the standard range. The standard range is set according to age, sex, etc., and the setting can be changed as needed.

Further, in the cardiac function monitoring apparatus of the present invention, in the cardiac function monitoring apparatus, the predetermined parameter value is a double product equivalent amount calculated by multiplying a heart rate by a systolic blood pressure equivalent displacement, a systolic displacement total amount, Alternatively, it is characterized by being one of the total diastolic displacement amounts.

Further, in the cardiac function monitoring apparatus of the present invention, in the above-mentioned cardiac function monitoring apparatus, the predetermined parameter value is a double product equivalent amount calculated by multiplying a heart rate by a systolic blood pressure equivalent displacement, a total systolic displacement amount, Alternatively, it is characterized in that it is either two of the total diastolic displacement.

Further, in the cardiac function monitoring apparatus of the present invention, in the cardiac function monitoring apparatus, the predetermined parameter value is a double product equivalent amount calculated by multiplying a heart rate by a systolic blood pressure equivalent displacement, a systolic displacement total amount, And the total amount of diastolic displacement. The predetermined parameter value is a continuous calculation of vascular wall displacement that can recognize cardiac reserve, other than double product equivalent calculated by multiplying heart rate by systolic blood pressure equivalent displacement, total systolic displacement, and total diastolic displacement. As long as it can be acquired based on the value, an appropriate one can be adopted.

Further, in the cardiac function monitoring apparatus of the present invention, in the above cardiac function monitoring apparatus, preliminary information is provided when one of the predetermined parameter values is out of the standard range. The information is provided based on the fact that one predetermined parameter value falls outside the standard range.

Furthermore, in the cardiac function monitoring apparatus of the present invention, in the above cardiac function monitoring apparatus, preliminary information is provided based on the fact that two of the predetermined parameter values are out of the standard range, and The information is provided based on the fact that one predetermined parameter value falls outside the standard range.

Furthermore, the cardiac function monitoring apparatus of the present invention is the above cardiac function monitoring apparatus,
The systolic displacement total amount, or the diastolic displacement total amount or by calculating a predicted value by prediction calculation based on the calculated value of a combination thereof, it is determined whether the predicted value is within the set standard range, the predicted value is It is characterized in that the outside of the standard range is the basis of the information provision at a predetermined time. This makes it possible to recognize in advance the cardiac reserve after a lapse of a predetermined time or after a predetermined amount of exercise, and to know the actual time of the optimum amount of exercise and the like.

Furthermore, the cardiac function monitoring apparatus of the present invention is the same as the above-mentioned cardiac function monitoring apparatus,
Calculating a predicted value by predictive calculation based on the calculated value of the total systolic displacement amount, the total diastolic displacement amount, or a combination thereof, and using a continuous transition characteristic of the predicted value as a basis for providing the information at a predetermined time. Is characterized by. As a result, it is possible to recognize in advance the cardiac reserve after a lapse of a predetermined time or after a predetermined amount of exercise, and it is possible to know the actual time of the optimal amount of exercise, etc., and to prepare for the cardiac reserve based on the continuous transition characteristic of the predicted value. Since the force is determined, more multifaceted and accurate determination of the cardiac reserve can be performed. The information provided above is
For example, it is an alarm, a warning display, a warning such as a warning vibration, a display such as a real time up to the optimum exercise amount, a voice, or the like.

Further, in the cardiac function monitoring apparatus of the present invention, in the above cardiac function monitoring apparatus, an ultrasonic sensor is used as the measuring means, and the ultrasonic wave of the ultrasonic sensor is applied perpendicularly to the blood vessel wall. Is characterized by. By irradiating the ultrasonic wave emitted from the ultrasonic sensor perpendicularly to the blood vessel wall, the accuracy of the acquired displacement of the blood vessel wall is dramatically improved.

Further, the heart function monitoring apparatus of the present invention is characterized in that, in the above-mentioned heart function monitoring apparatus, the heart function monitoring apparatus has a band, and the measuring means is provided on the band so that the position can be adjusted. With the band and the measuring means provided so that the position can be adjusted, the measuring means can be always used by being attached to the wrist or the like, and the measuring means can be adjusted to a proper position for measuring the displacement of the blood vessel wall.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a heart function monitoring apparatus of the present invention will be described based on specific embodiments shown in the drawings. Figure 1
FIG. 1 is a front view showing an embodiment of the heart function monitoring device of the present invention.

The heart function monitoring apparatus 1 shown in FIG. 1 is of a type that is worn on a wrist and carried, and includes a CPU functioning as an arithmetic unit and a control unit, a memory serving as a storage unit, a time measuring unit, and the like. The processing unit 2 and the display unit 3 such as a liquid crystal display screen provided on the processing unit 2 and the power supply unit 4 for activating / deactivating the cardiac function monitoring apparatus 1 are provided, and the processing unit 2 and the cord 5 are used. A sensor unit 6 which is a measuring means is provided. Further, a band 7 for mounting on the wrist is attached below the processing unit 2, and the sensor 6 unit is attached to the band 7 in a state in which the position can be adjusted by sliding to an optimum position. Is provided with a warning unit 8. Reference numeral 9 is a superficial blood vessel of the wrist.

The sensor section 6 is a section for non-invasively and continuously measuring the measurement value caused by the displacement of the blood vessel wall, and it is possible to use a piezoelectric vibration conversion element or the like. It uses a conversion element. The sensor unit 6 including the ultrasonic conversion element irradiates the superficial blood vessel wall with ultrasonic waves and measures the Doppler shift frequencies of the transmitted ultrasonic waves and the reflected waves based on the ultrasonic Doppler method. The transmitted ultrasonic wave is measured by irradiating it perpendicularly to the superficial blood vessel wall in order to ensure the accuracy of the value, but the present invention also includes a method capable of accurate measurement other than irradiating it vertically. In addition, the use of ultrasonic transducers in the sensor unit saves the amount of electricity used, and by using ultrasonic waves, not only superficial blood vessels but also blood vessels in deep body regions can be measured. Since it is possible to increase the number, it is also suitable for this reason.

In the sensor section 6, in addition to the ultrasonic transducer,
An appropriate one can be used as long as it can acquire the pressure pulse wave shape, and for example, a semiconductor strain gauge, a pressure sensitive diode, or the like can be appropriately used as the piezoelectric vibration conversion element. Further, instead of using a piezoelectric vibration conversion element or the like, it is also possible to adopt an air volume conversion method using a pressure sensitive sensor.

From the measured value of the Doppler shift frequency detected and measured by the sensor unit 6 having the above ultrasonic transducer,
The displacement equation of the blood vessel wall is continuously calculated and obtained by setting a theoretical formula in the memory of the processing unit 2 and calculating it by the CPU. The theoretical formula by the ultrasonic Doppler method is as the following formula (1). Note that f1: frequency of transmitted ultrasonic wave, f2: frequency of reflected wave, Δf: Doppler shift frequency detected from transmitted ultrasonic wave and reflected wave, V: moving speed (displacement speed) of blood vessel wall, C: ultrasonic wave , Θ: the incident angle between the displacement direction of the blood vessel wall and the ultrasonic beam.

Δf = f1-f2 = 2 Vcos θ / C
.. (1) When the ultrasonic beam is irradiated perpendicularly to the blood vessel wall, cos θ becomes 1 at θ = 0 °, so the above theoretical formula (1) is expressed by the following formula (2).

Δf = f1-f2 = 2V / C
.. (2) The displacement velocity of the blood vessel wall continuously acquired is further integrated, and the blood vessel wall displacement is continuously calculated and acquired.
If necessary, a displacement curve that is an analog waveform of the blood vessel wall displacement is acquired from the continuously calculated values of the blood vessel wall displacement. The displacement curve has the same tendency as the intravascular pressure pulse wave shape. The displacement curve obtained in this example is shown in FIG. In FIG. 2, the horizontal axis represents time and the vertical axis represents the displacement amount of the blood vessel wall.

From the continuous calculated value of the blood vessel wall displacement or the blood vessel wall displacement amount curve representing the arterial pressure pulse waveform, for example, the heart rate (pulse rate) in one minute, the maximum systolic displacement amount of the blood vessel wall, Average value of peak systolic displacement of blood vessel wall, median systolic peak displacement of blood vessel wall, systolic displacement velocity of blood vessel wall, total systolic displacement of blood vessel wall, total diastolic displacement of blood vessel wall, blood vessel The total displacement of the wall and the total diastolic time of the blood vessel wall can be recognized or calculated and obtained by the CPU as needed.

Then, a processing parameter value capable of recognizing the state of cardiac reserve is calculated and acquired based on the blood vessel wall displacement amount curve. For example, in the present embodiment, the displacement corresponding to the systolic blood pressure is multiplied by the heart rate to calculate and obtain the double product equivalent amount for the heart rate, and the displacement corresponding to the systolic blood pressure is, for example, one minute. A systolic maximum displacement amount h corresponding to the systolic blood pressure, an average systolic peak displacement amount of the blood vessel wall, a median systolic peak displacement amount of the blood vessel wall, or the like is adopted.

Here, the double product is an index of cardiac function by the amount represented by heart rate × maximal blood pressure, and the double product equivalent amount in the present invention is obtained by multiplying the displacement corresponding to the maximum blood pressure by the heart rate. It is what you want. Since the pressure pulse waveform in this embodiment is obtained as a displacement curve, the systolic blood pressure (maximum blood pressure) and the part corresponding to the diastolic blood pressure (minimum blood pressure) become the difference between the systolic blood pressure and the systolic blood pressure. The corresponding displacement amount is shown or calculated. Since the systolic blood pressure and the diastolic blood pressure both change depending on the blood pressure, the displacement amount also changes. For example, the systolic maximum displacement amount corresponding to the systolic blood pressure in one minute or the systolic peak displacement amount of the blood vessel wall. The mean value of, or the median value of the systolic peak displacement amount of the blood vessel wall is equivalent to the systolic blood pressure value,
By replacing this with systolic blood pressure value and multiplying it by the heart rate, it is possible to approximately recognize the cardiac reserve and the cardiac function reserve. For this reason, the double product equivalent amount corresponding to the predetermined heart rate is determined. It is what you want.

Further, regarding the systole, processing parameter values capable of recognizing the state of cardiac reserve which can be obtained based on the blood vessel wall displacement curve include, in addition to the double product equivalent amount, the total systolic displacement and the rise differential of the systole. Values and the like can also be used, and it is possible to appropriately select these processing parameter values as needed, or to combine and combine the necessary values to obtain and use them.

Further, regarding the diastole, the processing parameter value that can be obtained based on the blood vessel wall displacement amount curve and can recognize the state of the cardiac reserve is, for example, the total diastolic displacement amount. The total diastolic displacement in the total diastolic time approximately correlates with the coronary blood flow because the coronary blood flow flows during the diastole, and the change in the total diastolic displacement approximately correlates with the change in the coronary blood flow. Therefore, the total diastolic displacement is an important index for judging the cardiac reserve and the cardiac function reserve.

In the present embodiment, both the double product equivalent amount and the total diastolic displacement are obtained in order to increase the accuracy of recognition of the cardiac reserve and the cardiac function reserve. The diastolic displacement total amount is, for example, an average value obtained by adding the diastolic displacement total amounts of all the diastolic period times in one minute, and dividing the sum by the heartbeat rate in the one minute, or the heartbeat in the one minute. The median value of the numbers, or the maximum total diastolic displacement in the heart rate per minute is used. Note that other processing parameter values can be used as appropriate, for example, two combinations of double product equivalent and total diastolic displacement, or two combinations of total diastolic displacement and total systolic displacement. It is also possible to determine the cardiac reserve by using any one of the double product equivalent amount, the systolic displacement total amount, or the diastolic displacement amount.

In this embodiment, the standard range of the double product equivalent amount preset in the memory is compared with the acquired double product equivalent amount, and the standard range of the diastolic displacement total amount that is similarly set and the acquired expansion amount are compared. If the double product equivalent amount or the diastolic displacement total amount is out of the standard range by comparing the total displacement during the period, a preliminary warning such as an alarm, vibration, lighting, etc. in the warning unit 8 or a preliminary If the double product equivalent amount and the total diastolic displacement amount are out of the standard range, warning is given by the warning unit 8 and predetermined display is given, and the user recognizes excessive exercise etc. Make it possible. It is also possible to directly warn the warning unit 8 when any one of the double product equivalent amount or the diastolic displacement total amount is out of the standard range. Even when the processing parameter value is adopted, a warning is given by comparing one or more processing parameter values with the standard range.

Although the reference value and the fluctuation range of the index such as the double product equivalent amount, the total diastolic displacement amount, or the total systolic displacement amount vary depending on the individual, the value before the start of the exercise load is determined from the result of theoretical numerical analysis. Based on the standard, it initially increases with an increase in heart rate due to the addition of exercise, then reaches a plateau when the heart rate further increases, and then tends to decrease. The double product equivalent and the total systolic displacement tend to increase within the corresponding range of cardiac reserve and decrease outside the corresponding range. Becomes Moreover, the timing when the total diastolic displacement also tends to decrease from the plateau is a guide for determining the corresponding range of cardiac reserve. The tendency of the change is the same not only in healthy individuals but also in people with cardiac dysfunction.

The graphs of FIGS. 3 and 4 of this embodiment show the double product equivalent amount and the total diastolic displacement amount, respectively, with the horizontal axis representing the heart rate and the vertical axis representing the double product equivalent amount and the total diastolic displacement amount. is there. In the case of a person with cardiac insufficiency, both curves of double product equivalent and total diastolic displacement are located on the lower left or lower side, the plateau of double product equivalent comes earlier, and the total diastolic displacement decreases to the right at an early stage. Also, in the case of a healthy person, both the curves of double product equivalent and total diastolic displacement are located in the upper right or upper part, and the double product equivalent is late in plateau,
The total amount of diastolic displacement declines to the right at a later stage.

From the above tendency, it is possible to preset a standard range such as a double product equivalent amount or a double product, or a diastolic displacement total amount based on statistics or past data. In Fig. 3, regarding the double product equivalent amount and the total diastolic displacement, the standard range set for the standard healthy person and the standard range set for the standard cardiac dysfunction person are hatched between the dotted lines. Indicate by range.
These standard ranges are not limited to the above-mentioned settings, and various settings such as age, sex, and purpose can be set, and it is possible to select and use these settings. Similarly, a standard range such as the total systolic displacement can be set.

Further, based on the statistics and past data, from the curve transitions of the obtained double product equivalent amount and diastolic displacement total amount, the subsequent predicted values such as double product equivalent amount, diastolic displacement total amount or systolic displacement total amount. It is possible to predict the displacement of the curve and its curve, the double product equivalent amount obtained in the predictive calculation, the total diastolic displacement,
Information such as warnings and displays at predetermined times is determined based on the judgment that the predicted values of systolic displacement etc. or the deviations of these predicted curves are within the standard range or outside the standard range It is also suitable to provide the information. The predetermined time includes, for example, a time point that is a predetermined time back from a time point outside the standard range, a time point that is predicted to be outside the standard range, and the like, and the information provision includes a warning and a process. It includes the display of the optimum amount of exercise and its real time which are predicted and calculated in the part 2 based on the data.

The continuous predicted values of the double product equivalent amount, systolic displacement total amount and diastolic displacement total amount obtained by the above-mentioned prediction calculation or their prediction curves exceed the allowable range of the cardiac reserve due to excessive exercise load. Since the shape has the above-mentioned transition characteristics, such as a decrease in pressure, the cardiac reserve is calculated from the timing of the plateau of the predictive curve for the double product equivalent amount or the total systolic displacement or the decrease of the predictive curve for the total diastolic displacement. It is also suitable to make a judgment and provide the information at a predetermined time.

As a further criterion for showing the limit of the cardiac reserve in the double product equivalent amount, the systolic displacement total amount, and the diastolic displacement total amount, for example, crossing the one-dot chain line in the solid line of the double product equivalent amount in FIG. The plateau that is present, the slope point of a predetermined angle that intersects the alternate long and short dash line in the solid line of the total diastolic displacement in FIG. 4, or a plateau is adopted, and these or these criteria are added in addition to the standard range described above. It is preferable that the standard range is set as follows and the cardiac reserve is determined in the standard range.

The processing unit 2 is provided for providing the information at the predetermined time.
The real time of the optimal momentum calculated based on the data etc. is updated and displayed at any time, a warning is given when a predetermined time goes back from the time outside the standard range, and the amount of double products equivalent to the prediction calculation increases. It includes warning and required display with the optimum predicted value from the point of changing to the falling.

In this embodiment, the values measured by the sensor unit 6 and the processing unit such as the displacement of the blood vessel wall, the displacement curve showing the arterial pressure pulse waveform, the double product equivalent amount, the total diastolic displacement amount, the total systolic displacement amount, and the like. All the data such as calculated values by 2 or the necessary items can be selected and recorded and stored in the memory built in the processing unit 2 for a predetermined measurement time, and the data in the memory can be stored as necessary. It can be used externally. It is more preferable that the data stored in the built-in memory is configured so that it can be taken out to the outside through an external output terminal, and is processed into various physiological indexes for use in health condition evaluation.

Further, although the above-mentioned cardiac function monitoring device 1 has been described as a system to be worn on the wrist, the present invention is not limited to this.
It can be used on appropriate places such as the chest and arms. It should be noted that it is preferable that the measurement site is close to the heart because the accuracy of the information regarding the cardiac reserve increases. Further, the heart function monitoring device 1 can be made small, lightweight, unconstrained, and can be made into a size of a wristwatch, and can be easily attached to a wrist or the like, and can be configured to be used in water due to a waterproof structure or the like. Is.

The above-described cardiac function monitoring apparatus 1 non-invasively and continuously obtains the arterial pressure pulse wave shape containing a large amount of cardiac function information to determine the cardiac reserve of the subject, and determines the amount of double product, diastolic period. The total displacement, the total systolic displacement, the optimal exercise amount, etc. can be displayed or selectively displayed on the display unit 3, and a warning or the like is issued when the reserve capacity of one's own cardiac function is exceeded during exercise or the like. Therefore, it is possible to prevent the subject from overexercising and check the health condition during the exercise.

[0044]

EFFECTS OF THE INVENTION Since the cardiac function monitoring apparatus of the present invention is configured as described above, the cardiac reserve of a subject during exercise is accurately recognized non-invasively and continuously, and the reserve of the heart is monitored. The effect that a good health condition of a subject can be managed is exhibited.

The heart function monitoring apparatus of the present invention includes a chest, an arm,
It can be easily worn on a wrist or the like, is light in weight, does not burden the subject, and is unconstrained, which is excellent in the comfort of the subject who wears it.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a heart function monitoring apparatus of the present invention.

FIG. 2 is a graph showing a displacement curve of a blood vessel wall.

FIG. 3 is an explanatory diagram showing a display screen on which a curve corresponding to a product is displayed.

FIG. 4 is an explanatory diagram showing a display screen on which a curve of total diastolic displacement is displayed.

[Explanation of symbols]

1 Heart function monitor 2 processing section 3 Display 4 power supply 5 codes 6 sensor 7 bands 8 Warning section 9 superficial blood vessels

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kohagi Yamashita 8-4-14 Sagamiono, Sagamihara City, Kanagawa 701 (56) References JP-A-60-80440 (JP, A) JP-A-10 -57325 (JP, A) JP-A-11-76233 (JP, A) JP-A-11-33003 (JP, A) JP-A-8-275934 (JP, A) JP-A-11-128186 (JP, A) ) JP-A-10-85363 (JP, A) JP-A-10-155772 (JP, A) JP-B 7-38885 (JP, B2) JP-A 2000-502928 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) A61B 5/0245 A61B 8/08

Claims (6)

(57) [Claims] 1. An ultrasonic wave is provided so as to be able to irradiate an ultrasonic wave perpendicularly to a blood vessel wall of a superficial blood vessel, and a measurement value caused by displacement of the blood vessel wall is continuously measured from the applied ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. And a means for calculating a predetermined parameter value corresponding to the diastole, and one of the calculated systolic and diastolic predetermined parameter values is outside the standard range of the set predetermined parameter values. And a means for issuing a warning based on the recognition that either one of them is out of the standard range, or a means for notifying the optimal amount of exercise or the optimal exercise time, and a predetermined parameter value corresponding to the systole or the expansion. Predetermined parameters corresponding to the period Means for calculating the predicted value by these predictive calculations based on the calculated value of the data or both, means for recognizing the time when the predicted value is outside the set standard range, and a predetermined time based on the recognized time. A heart function monitoring device which is equipped with a means for giving a warning at times or for telling the optimal amount of exercise and the optimal exercise time and is carried around the wrist. 2. A supersonic wave is provided so as to be able to vertically irradiate a blood vessel wall of a superficial blood vessel, and a measurement value caused by displacement of the blood vessel wall is continuously measured from the applied ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. Recognizing that the predetermined parameter value corresponding to the diastole and the calculated systolic and diastolic predetermined parameter values are both outside the standard range of the set predetermined parameter values. And a means for issuing a warning based on the recognition that the both are out of the standard range or for notifying the optimal amount of exercise and the optimal exercise time, and a predetermined parameter value corresponding to the systole or a predetermined value corresponding to the diastole. Parameter value or Based on the calculated value of both, means for calculating the predicted value by these prediction calculation,
It is equipped with a means for recognizing a time point when the predicted value is out of the set standard range, and a means for giving a warning at a predetermined time based on the recognition time point or for notifying an optimal exercise amount and an optimal exercise time, and is worn on a wrist and carried. Heart function monitoring device. 3. A supersonic wave is provided so as to be able to vertically irradiate a blood vessel wall of a superficial blood vessel, and a measurement value caused by displacement of the blood vessel wall is continuously measured from the applied ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. And a means for calculating a predetermined parameter value corresponding to the diastole, and one of the calculated systolic and diastolic predetermined parameter values is outside the standard range of the set predetermined parameter values. And a means for giving a preliminary warning based on the recognition that either one of them is out of the standard range, or for preliminarily telling the optimum exercise amount or the optimum exercise time, and the calculated systolic period. Both set predetermined parameter values during diastole Means for recognizing that each of the predetermined parameter values is out of the standard range, and means for warning based on the recognition that the both are out of the standard range or a means for notifying the optimal exercise amount or the optimal exercise time, and Means for calculating a prediction value by these prediction calculations based on a predetermined parameter value corresponding to the systole or a predetermined parameter value corresponding to the diastole or both calculated values, and the prediction value being outside the standard range set A heart function monitoring apparatus that is worn on the wrist and is equipped with a means for recognizing the time point and a means for giving a warning at a predetermined time based on the recognition time point or for notifying the optimum exercise amount and the optimum exercise time. 4. An ultrasonic wave is provided so as to be able to vertically irradiate a blood vessel wall of a superficial blood vessel, and a measurement value resulting from displacement of the blood vessel wall is continuously measured from the applied ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. And a means for calculating a predetermined parameter value corresponding to the diastole, and one of the calculated systolic and diastolic predetermined parameter values is outside the standard range of the set predetermined parameter values. And a means for giving a warning based on the recognition that any one of them is out of the standard range, or a means for notifying an optimal exercise amount or an optimal exercise time, and a predetermined parameter value corresponding to the systole or Predetermined corresponding to the diastole Based on the parameter value or the calculated value of both, means for calculating the predicted value by these prediction calculations,
The wrist is provided with means for recognizing a time point at which a predetermined transition characteristic appears from a continuous prediction curve based on the predicted value, and means for giving a warning at a predetermined time based on the recognition time point or notifying an optimum amount of exercise or an optimum exercise time. A cardiac function monitoring device that is worn and carried. 5. A measurement value caused by displacement of a blood vessel wall is continuously measured by irradiating an ultrasonic wave perpendicularly to a blood vessel wall of a superficial blood vessel and irradiating the ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. Recognizing that the predetermined parameter value corresponding to the diastole and the calculated systolic and diastolic predetermined parameter values are both outside the standard range of the set predetermined parameter values. And a means for issuing a warning based on the recognition that the both are out of the standard range or for notifying the optimal amount of exercise and the optimal exercise time, and a predetermined parameter value corresponding to the systole or a predetermined value corresponding to the diastole. Parameter value or Means for calculating a prediction value by these prediction calculations based on the calculated values of both, means for recognizing a time point at which a predetermined transition characteristic appears from a continuous prediction curve by the prediction value, and a predetermined time point based on the recognition time point A heart function monitoring device which is equipped with a means for giving a warning at times or for telling the optimal amount of exercise and the optimal exercise time and is carried around the wrist. 6. An ultrasonic wave is provided so as to be able to vertically irradiate a blood vessel wall of a superficial blood vessel, and a measurement value caused by displacement of the blood vessel wall is continuously measured from the applied ultrasonic wave and its reflected wave. The sensor unit continuously calculates the blood vessel wall displacement from the measured values, and based on the continuously calculated values of the blood vessel wall displacement, the predetermined parameter value and the cardiac reserve function corresponding to the systolic period in which the cardiac reserve can be recognized. And a means for calculating a predetermined parameter value corresponding to the diastole, and one of the calculated systolic and diastolic predetermined parameter values is outside the standard range of the set predetermined parameter values. And a means for giving a preliminary warning based on the recognition that either one of them is out of the standard range, or for preliminarily telling the optimum exercise amount or the optimum exercise time, and the calculated systolic period. Both set predetermined parameter values during diastole Means for recognizing that each of the predetermined parameter values is out of the standard range, and means for warning based on the recognition that the both are out of the standard range or a means for notifying the optimal exercise amount or the optimal exercise time, and Based on a predetermined parameter value corresponding to the systole, a predetermined parameter value corresponding to the diastole, or both calculated values, means for calculating the predicted value by these predictive calculations, and a continuous prediction curve based on the predicted value A heart function monitoring device worn on the wrist and equipped with means for recognizing a time point at which a predetermined transition characteristic appears, and means for giving a warning at a predetermined time based on the recognition time point or for notifying an optimal amount of exercise or an optimal exercise time. .