JP2000152918A - Bloodlessly continuous sphygmomanometer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sphygmomanometer which can save the monitored waveforms of blood pressure change in the elapse of time together with times and transmit continuous waveform data of blood pressure to another device. SOLUTION: This sphygmomanometer has a clock means 10 to time the current time and a waveform memory means 11 to save a blood pressure gauged by a blood pressure calculation means 6 and the time gauging the blood pressure. Not only data of systolic blood pressure and diastolic blood pressure but also data of continuous blood pressure signals bloodlessly measured are saved in the clock means 10 and the waveform memory means 11, and the change of blood pressure in a day is saved as continuous waveform data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sphygmomanometer capable of continuously measuring non-invasive blood pressure by applying vibration to a blood vessel in a living body and detecting and analyzing the vibration propagated in the blood vessel. Things.

[0002]

2. Description of the Related Art Measurement of blood pressure as a biological parameter
It goes without saying that it is particularly important in the diagnosis and evaluation of cardiovascular diseases. Currently, there is a Holter sphygmomanometer that measures and records daily blood pressure fluctuations.
Only diastolic blood pressure and heart rate can be measured, but continuous blood pressure waveforms cannot be measured and recorded.

A common means for measuring a continuous blood pressure waveform is to perform an invasive measurement using a catheter. Since this is an invasive method, it is very difficult to measure the normal circadian blood pressure fluctuation.

As a means for measuring the circadian variation of blood pressure, the invention described in Japanese Patent Application Laid-Open No. 7-265273 is known. The configuration and operation of a conventional sphygmomanometer will be described with reference to FIG.

[0005] A memory 47 for storing a standard constant α multiplied by the pulse wave propagation time, and a photoelectric pulse wave sensor 48 attached to, for example, a finger of a subject and measuring a pulse wave on a peripheral blood vessel side.
An input means 49 for inputting a blood pressure value for calibration; a time interval detection reference point detecting section 50 for detecting a time interval detection reference point on the aortic pulse wave; and a peripheral portion appearing later than the aortic pulse wave. A pulse wave detecting unit 51 for detecting a pulse wave on the blood vessel side; and a pulse wave transit time measuring unit for measuring the pulse wave transit time based on the respective detection outputs of the time interval detection reference point detecting unit and the pulse wave detecting unit. The CPU 52 and the CPU 52 which is an arithmetic unit that determines a constant β using the blood pressure value, the pulse wave transit time, and the constant α input for calibration are measured at regular intervals in order to measure blood pressure circadian variation. Pulse wave transit time and constant α, β
To calculate the daily blood pressure fluctuation.

As a means for continuously and non-invasively measuring blood pressure, the invention described in Japanese Patent Publication No. Hei 9-506024 is known, and the configuration and operation of a conventional blood pressure monitor will be described with reference to FIG. I do.

[0007] An exciter 54 for perturbing the body tissue of the subject 53 and a non-invasive sensor 55 for receiving vibration propagated in the subject 53 attached at a distance from the exciter 54
And an oscillating pressure band 56 including automated means for obtaining a blood pressure signal for obtaining an absolute value of blood pressure. In the sphygmomanometer main body 57, the elasticity of the blood vessel is calculated by detecting the sound speed of a sound wave propagating through the blood vessel by utilizing the fact that the elasticity of the blood vessel changes according to the change in blood pressure by a processor (not shown). The blood pressure is measured from the values, a continuous blood pressure waveform is displayed on the waveform output monitor 58, and the systolic blood pressure value, the diastolic blood pressure value, and the average blood pressure measured by the digital display 59 are displayed.

[0008]

However, in the prior art as described above, only the measured continuous blood pressure waveform is displayed, and the measured waveform cannot be sequentially stored. However, there is a problem that the data cannot be transferred to another device.

Further, when monitoring the circadian variation of blood pressure, there is a problem that not only the systolic blood pressure and the diastolic blood pressure can be measured, but also the intermittent and continuous measurement cannot be performed and the true circadian blood pressure cannot be obtained. Have.

The present invention solves the above-mentioned conventional problem. In addition to the systolic blood pressure and diastolic blood pressure data, the present invention sequentially stores data of non-invasively measured continuous blood pressure waveforms, and stores the stored continuous waveforms. Data can be transferred to other devices, and means for analyzing the measured continuous blood pressure waveform and notifying when abnormal blood pressure is measured or arrhythmia is measured. By installing a battery that can store the time when the blood pressure and arrhythmia were measured, and can also supply power when carrying, the daily blood pressure fluctuation is stored as continuous waveform data, and the data is used to diagnose and diagnose cardiovascular functions. An object of the present invention is to provide a sphygmomanometer capable of performing an evaluation with high accuracy.

[0011]

In order to solve the above-mentioned problems, a non-invasive continuous sphygmomanometer according to the present invention is provided by an exciter for vibrating a blood vessel in a living body, and the exciter. A non-invasive sensor that receives vibrations propagated on the blood vessel and converts it into an electric signal, a calibration sphygmomanometer that measures an absolute value of blood pressure, a measurement value of the calibration sphygmomanometer, and the non-invasive sensor Provided with a blood pressure calculating means for calculating a blood pressure in the living body based on the measured value of the blood pressure, a blood pressure value measured by the blood pressure calculating means, and a waveform storage means for identifiably storing information on time when the blood pressure value was measured. It is.

A non-invasive continuous sphygmomanometer according to a second aspect of the present invention further comprises an arrhythmia detecting means for detecting an arrhythmia and recording the occurrence of the arrhythmia in a waveform recording means in addition to the constitution of the first aspect. It is.

A non-invasive continuous sphygmomanometer according to a third aspect of the present invention includes an arrhythmia notifying unit for notifying the detection of an arrhythmia in addition to the constitutions of the first and second aspects.

According to a fourth aspect of the present invention, there is provided a non-invasive continuous sphygmomanometer according to the first, second and third aspects of the present invention. The reference systolic blood pressure value setting means for storing the blood pressure value, the systolic blood pressure value calculating means for calculating the systolic blood pressure value from the blood pressure value measured by the blood pressure calculating means, and the systolic blood pressure value calculating means. A systolic blood pressure abnormality detecting means for comparing at least one systolic blood pressure value with the reference systolic blood pressure value to detect an abnormal blood pressure value is provided.

According to a fifth aspect of the present invention, there is provided a non-invasive continuous sphygmomanometer according to the first, second, third and fourth aspects of the present invention. Reference diastolic blood pressure value setting means for storing a diastolic blood pressure value; diastolic blood pressure value calculating means for calculating a diastolic blood pressure value from the blood pressure value measured by the blood pressure calculating means; A diastolic blood pressure abnormality detecting means for comparing the obtained at least one diastolic blood pressure value with the reference diastolic blood pressure value to detect an abnormal blood pressure value.

According to a sixth aspect of the present invention, there is provided a non-invasive continuous sphygmomanometer which detects an abnormal systolic blood pressure in addition to the configuration of the fourth aspect,
A systolic blood pressure abnormality detection recording means for recording the occurrence of the systolic blood pressure abnormality in a waveform recording means is provided.

A non-invasive continuous sphygmomanometer according to a seventh aspect of the present invention, in addition to the configuration of the fifth aspect, detects an abnormal diastolic blood pressure,
A diastolic blood pressure abnormality detection recording means for recording the occurrence of the diastolic blood pressure abnormality in a waveform recording means is provided.

The non-invasive continuous sphygmomanometer according to the invention of claim 8 is provided with a systolic blood pressure abnormality notifying means for notifying the detection of the systolic blood pressure abnormality in addition to the constitution of claims 4 and 6. .

A non-invasive continuous sphygmomanometer according to a ninth aspect of the present invention further comprises a diastolic blood pressure abnormality notifying means for notifying the detection of an abnormal diastolic blood pressure in addition to the constitution of the fifth and seventh aspects. .

According to a tenth aspect of the present invention, there is provided a non-invasive continuous sphygmomanometer according to the first, second, third, fourth, fifth, sixth, seventh, eighth and ninth aspects.
An electrocardiogram signal input unit for inputting an electrocardiogram signal, an electrocardiogram signal synchronization unit for synchronizing a blood pressure signal output from the blood pressure calculation unit and a time of the electrocardiogram signal output from the electrocardiogram signal input unit, and the electrocardiogram. A signal recording means for recording a signal and the blood pressure signal is provided.

A non-invasive continuous sphygmomanometer according to an eleventh aspect of the present invention has the configuration of the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth and tenth aspects in addition to the configuration of the non-invasive blood pressure monitor. Waveform recording communication means for transmitting the obtained information.

According to a twelfth aspect of the present invention, there is provided a non-invasive continuous blood pressure monitor according to the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and first aspects.
In addition to the configurations of 0 and 11, the power supply switching means is provided for switching to the second power supply means when detecting that the voltage value of the first power supply means becomes lower than a preset voltage value.

According to a thirteenth aspect of the present invention, in addition to the configuration of the twelfth aspect, the non-invasive continuous sphygmomanometer compares the voltage value of the first power supply with a preset value to detect an abnormality. And a power supply abnormality detection recording means for recording on the waveform recording means.

A non-invasive continuous sphygmomanometer according to a fourteenth aspect of the present invention is the same as the twelfth and thirteenth aspects of the present invention.
The power supply abnormality notification means for comparing the voltage value of the power supply means with a preset value and notifying the abnormality is provided.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention is characterized in that a blood pressure value measured by a blood pressure calculating means and a waveform storage means for identifiably storing information on time when the blood pressure value is measured, In addition to the systolic blood pressure and diastolic blood pressure data, the continuous blood pressure signal data measured non-invasively is sequentially stored, and the daily blood pressure fluctuation can be stored as continuous waveform data.

According to a second aspect of the present invention, there is provided an arrhythmia detecting means for detecting an arrhythmia and recording occurrence of the arrhythmia in a waveform recording means, wherein the arrhythmia is detected simultaneously with the continuous blood pressure signal. Therefore, it is possible to check the blood pressure waveform at the time of occurrence of arrhythmia when diagnosing the stored data.

Further, the invention according to claim 3 is provided with arrhythmia notifying means for notifying the detection of arrhythmia, and has the effect that the occurrence of arrhythmia can be known without constantly monitoring.

According to a fourth aspect of the present invention, a reference systolic blood pressure value setting means for storing a reference systolic blood pressure value which is a reference value of an arbitrarily set systolic blood pressure value, and a blood pressure calculating means for measuring the reference systolic blood pressure value. A systolic blood pressure value calculating means for calculating a systolic blood pressure value from the obtained blood pressure value, and an abnormal blood pressure value by comparing at least one systolic blood pressure value calculated by the systolic blood pressure value calculating means with a reference systolic blood pressure value. It is provided with a systolic blood pressure abnormality detecting means for detecting the abnormal systolic blood pressure at the same time as the continuous blood pressure waveform. This has the effect that a continuous blood pressure signal can be confirmed.

According to a fifth aspect of the present invention, there is provided a reference diastolic blood pressure value setting means for storing a reference diastolic blood pressure value which is a reference value of an arbitrarily set diastolic blood pressure value, and a blood pressure calculating means. Diastolic blood pressure value calculating means for calculating a diastolic blood pressure value from the obtained blood pressure value, and comparing at least one diastolic blood pressure value calculated by the diastolic blood pressure value calculating means with a reference diastolic blood pressure value, It is provided with a diastolic blood pressure abnormality detecting means for detecting the diastolic abnormal blood pressure simultaneously with the continuous blood pressure waveform. This has the effect that a continuous blood pressure signal can be confirmed.

Further, the invention according to claim 6 is provided with a systolic blood pressure abnormality detection recording means for detecting systolic blood pressure abnormality and recording occurrence of the systolic blood pressure abnormality in a waveform recording means. This has the function of recording the time at which the abnormal BP blood pressure occurred.

Further, the invention according to claim 7 is provided with diastolic blood pressure abnormality detection recording means for detecting diastolic blood pressure abnormality and recording occurrence of diastolic blood pressure abnormality in the waveform recording means. This has the function of recording the time at which the abnormal BP blood pressure occurred.

Further, the invention according to claim 8 is provided with a systolic blood pressure abnormality notifying means for notifying the detection of the systolic blood pressure abnormality, so that the occurrence of the systolic blood pressure abnormality can be known without constantly monitoring. It has the effect of being able to.

Further, the invention according to claim 9 is provided with a diastolic blood pressure abnormality notifying means for notifying the detection of the diastolic blood pressure abnormality, so that the occurrence of the diastolic blood pressure abnormality can be known without constantly monitoring. It has the effect of being able to.

According to a tenth aspect of the present invention, an electrocardiogram signal input means for inputting an electrocardiogram signal, a blood pressure signal output from the blood pressure calculation means and a time of the electrocardiogram signal output from the electrocardiogram signal input means are synchronized. ECG signal synchronizing means, and a waveform recording means for recording an ECG signal and a blood pressure signal.Since a continuous blood pressure signal can be stored simultaneously with the ECG signal, when an abnormal blood pressure is recognized, the It has the effect of being able to make a diagnosis.

Further, the invention according to claim 11 is provided with a waveform recording communication means for transmitting information recorded in the waveform recording means, so that the recorded continuous blood pressure signal and the simultaneously recorded electrocardiogram signal can be used for other purposes. Has the effect of being able to be transferred to another device.

Further, the invention according to claim 12 is provided with a power supply switching means for switching to the second power supply means when detecting that the voltage value of the first power supply means becomes lower than a preset voltage value. This has the effect that measurement can be continued without interruption even if a power failure occurs during use of the commercial power supply.

According to a thirteenth aspect of the present invention, there is provided a power supply abnormality detecting and recording means for comparing the voltage value of the first power supply means with a preset value, detecting an abnormality and recording the abnormality in the waveform recording means. It has the function of recording the time at which the measurement became unstable when a power failure occurred.

Further, the invention according to claim 14 is provided with a power supply abnormality notifying means for comparing the voltage value of the first power supply means with a preset value and notifying an abnormality, and is provided with a portable power supply. For example, it is possible to notify in advance that the measurement will be stopped due to the exhaustion of the remaining amount of the battery when operating with the battery.

(Embodiment 1) FIG. 1 is a block diagram showing a configuration of Embodiment 1 of the present invention.

The non-invasive continuous sphygmomanometer main body 1 is a sphygmomanometer main body that continuously measures non-invasive blood pressure by applying vibration to a blood vessel in a living body and detecting and analyzing the vibration propagated in the blood vessel. The exciter 2 vibrates the blood vessel of the subject. The vibration oscillator 3 has a frequency of several Hz to several hundreds which is most effective for the subject.
A signal for driving the exciter 2 is oscillated at a frequency and amplitude up to 0 Hz. The non-invasive sensor 4 receives the vibration from the exciter 2 transmitted through the arterial blood vessel of the subject and converts it into an electric signal. The sphygmomanometer 5 for calibration operates at predetermined time intervals or at the instruction of the operator to measure the absolute value of the systolic blood pressure and the absolute value of the diastolic blood pressure of the subject. For the measurement of the absolute value of the systolic blood pressure and the absolute value of the diastolic blood pressure, it is assumed that a cuff (not shown) is pressurized by a generally known oscillometric method to compress the artery, and the measurement is performed while gradually reducing the pressure. Note that this measurement can be performed in another configuration, and the means is not limited. The blood pressure calculating means 6 includes the vibration oscillator 3
A / D (analog / digital) conversion of the electric signal output from the non-invasive sensor 3 based on the signal generated in
The continuous blood pressure signal 7 is obtained from the absolute value of the systolic blood pressure and the absolute value of the diastolic blood pressure output from the calibration sphygmomanometer 5.
Is calculated. For example, the means described in Japanese Patent Publication No. 9-506024 can be used. Blood pressure waveform display section 8
Is a monitor for displaying the continuous blood pressure signal 7 output from the blood pressure calculating means 6 as a waveform. Blood pressure / heart rate display 9
Displays the values of the systolic blood pressure, the diastolic blood pressure and the heart rate calculated by the blood pressure calculating means 6. The clock means 10 holds the current time or the elapsed time from the start of blood pressure measurement. The waveform storage unit 11 stores the continuous blood pressure signal 7 and the time obtained from the clock unit 10.

Next, the operation of recording the continuous blood pressure signal 7 and the time in the waveform storage means 11 will be described with reference to FIG.

FIG. 2A shows an example in which the amplitude of the fluctuation of the blood pressure value of the continuous blood pressure signal 6 calculated by the blood pressure calculating means 5 is represented by a 7-bit resolution (128 gradations) 11. Time data 1
3 must be stored in the memory as the waveform storage means 10 at the same time.
Since the time is seconds, 6 bits are required, and the data of "minute" also requires 6 bits. Since the preferred sampling time of the blood pressure waveform is about 200 Hz (period: 20 milliseconds), the time data 13 may be recorded at a rate of one data for every 200 data of the continuous blood pressure signal 6. As means for identifying the data for recording the data of the continuous blood pressure signal 6 and the time data in the same memory, when one address of the memory is 8-bit data, the data of the continuous blood pressure signal is 7 bits, Since the “second” data has 6 bits, bit 7 is used as the data identification flag 12 as shown in FIG. This bit is set to 0 when storing the data of the continuous blood pressure signal 6, and this bit is set to 1 when storing the time data 13. When the data is read out from the memory, it is possible to identify whether the data is continuous blood pressure signal data or time data using this bit. Here, bit6 of the time data is set to 0.

At this time, if the data of the continuous blood pressure signal is lost due to the writing of the time data and the continuity of the data of the continuous blood pressure signal is lost, when drawing the waveform, it is possible to supplement the preceding and succeeding sampling values. It is possible. Here, the time data stored in the memory is only "minutes" and "seconds", but information beyond "hours" can be identified by the memory address to be stored.

In addition, in addition to the above, as shown in FIG.
7 bits other than the flag of each address can be treated as a continuous bit string, and the elapsed time from the measurement start time can be recorded, for example, in seconds. This means is not limited.

Further, the continuous blood pressure signal 6 calculated by the blood pressure calculating means 5 is recorded in the waveform storing means 11 at fixed time intervals without using the clock means 10, and, for example, an arbitrary memory address in which each blood pressure value is recorded is used. A configuration in which the elapsed time from the start of measurement of the blood pressure value is obtained by calculation is also possible. Furthermore, a configuration is also possible in which the current time at the start of measurement is stored in advance, and the absolute time of measurement of the blood pressure value is calculated based on the elapsed time from the start of measurement.

As shown in FIG. 3, the memory described in the present embodiment includes a recording means 15 such as a semiconductor memory, a hard disk, a floppy disk, and an MO (magneto-optical disk). 1, it is possible to use a recording medium 16 that is detachable from the non-invasive continuous sphygmomanometer main body 1, and the configuration is not limited.

With such a configuration, a continuous blood pressure signal measured non-invasively can be recorded with time, and long-term blood pressure fluctuation can be monitored together with the current time or elapsed time from the start of measurement. As a fluctuation monitor, a highly reliable non-invasive continuous blood pressure monitor for diagnosing a cardiovascular disease patient can be provided.

(Embodiment 2) FIG. 4 is a block diagram showing a configuration of Embodiment 2 of the present invention.

The components having the same reference numerals as those described in the first embodiment perform the same operations as those described in the first embodiment, and the description thereof will be omitted.

The blood pressure cycle measuring means 17 measures the cycle of the blood pressure value fluctuation from the continuous blood pressure signal 7. The arrhythmia detecting means 18 measures whether or not the cycle of the blood pressure measured by the blood pressure cycle measuring means 17 is constant. If the cycle is not constant, the arrhythmia detecting means 18 determines that the arrhythmia is present and records the time in the waveform storage means 11. . The arrhythmia notifying unit 19 is a unit for notifying when an arrhythmia has been detected by the arrhythmia detecting unit 18, and a preferable unit may be a lamp such as an LED. Alternatively, it can be configured using a radio means using radio waves or light. FIG. 5 shows an external view of an apparatus in which a lamp is mounted as arrhythmia notification means.

In the sphygmomanometer configured as described above,
The arrhythmia detection operation will be described with reference to FIG.

The continuous blood pressure signal waveform 20 is a waveform of the continuous blood pressure signal output from the blood pressure calculating means 6. The blood pressure peak 21 is a peak value of the continuous blood pressure signal,
It corresponds to systolic blood pressure. The blood pressure cycle T, which is the interval between the blood pressure peaks, is calculated, and the value is stored. Here, when an arrhythmia period T1 different from the blood pressure period T is observed, it is determined that the arrhythmia is present. This series of operations is performed by the blood pressure cycle measuring means 17 and the arrhythmia detecting means 18 in FIG.

Next, the operation for calculating the blood pressure cycle T and the arrhythmia cycle T1 will be described. When the blood pressure peak 21 is observed, a count start pulse 22 is generated, the counter is operated with a clock having a sufficiently short cycle with respect to T, and the counter value until immediately before the next count start pulse 22 is generated is stored. Thus, the blood pressure cycle T and the arrhythmia cycle T1 are calculated. When the arrhythmia detecting means 18 determines that the arrhythmia is present, the information is stored in the waveform storage means 11 together with the continuous blood pressure signal data.

Next, a method of storing data in the waveform storage means 11 will be described with reference to FIG. The means for storing the continuous blood pressure signal data and the time data are the same as those described with reference to FIG. 2 of the first embodiment. When the arrhythmia is detected by the arrhythmia detecting means 18 as shown in FIG. 7A, the bit 6 which is an unused bit of the “minute” data is used as the arrhythmia identification flag 24 when writing the “minute” data. b
By writing 1 to it6, information on occurrence of arrhythmia can be recorded together with time.

In addition to the above, as shown in FIG. 7B, the addresses for setting the data identification flag 12 to 1 are consecutive,
When 1 is written to bit 6 of the start address, it is set as the arrhythmia identification flag 24, and bit 6 of the remaining addresses is set to 0, and the 6 bits other than the data identification flag 12 and the arrhythmia identification flag 24 are treated as a continuous bit string. It is also possible to record the elapsed time in seconds, for example, and this means is not limited.

With this configuration, it is possible to monitor continuous blood pressure and also monitor arrhythmia simultaneously.
Continuous blood pressure signal data and information on occurrence of arrhythmia can be stored together with the current time or the time from the start of measurement, and can be notified at the same time as occurrence of arrhythmia. A highly reliable non-invasive continuous sphygmomanometer for performing a patient diagnosis can be provided.

(Embodiment 3) FIG. 8 is a block diagram showing a configuration of Embodiment 3 of the present invention.

The components denoted by the same reference numerals as those described in the first or second embodiment perform the same operations as those described in the first or second embodiment, and the description thereof will be omitted.

The average blood pressure value calculating means 24 calculates the average values of the systolic blood pressure, which is the highest value of the blood pressure waveform, and the diastolic blood pressure, which is the lowest value of the blood pressure waveform, for a predetermined number of seconds. . The abnormal blood pressure detecting means 25 determines whether or not the systolic blood pressure and / or the diastolic blood pressure calculated by the average blood pressure calculating means 24 exceeds the value range set by the blood pressure reference value setting means 26. I do.

If the systolic blood pressure and / or the diastolic blood pressure measured by the blood pressure average value calculating means 24 are determined based on the value of only one heartbeat, abnormalities can be obtained even when the measured values are disturbed due to, for example, body movement. Since the blood pressure is detected as blood pressure, it is determined that the blood pressure is abnormal if the average value of both or one of the systolic blood pressure and the diastolic blood pressure fluctuates during a preset time. Note that a configuration in which abnormal blood pressure is determined based on only one heartbeat is also possible. It is also possible to detect abnormal blood pressure when the number of times the systolic blood pressure value exceeds the blood pressure reference value or the number of times the diastolic blood pressure value drops below the blood pressure reference value within a predetermined time is greater than a preset number. The means is not limited.

The blood pressure reference value setting means 26 sets a blood pressure value as a reference for determining abnormal blood pressure. The preferred means for setting the blood pressure reference value is provided with a ten key for setting and inputs numerical values. Or a communication means (not shown) from another device such as a computer
Can also be set. The abnormal blood pressure notifying means 27 is means for notifying when it is determined that the abnormal blood pressure detecting means 25 has detected abnormal blood pressure, and a lamp may be considered as a preferable means. Alternatively, it can also be configured using wireless means using radio waves or light.

The clock means 10 measures the current time or the time from the start of measurement. The waveform storage unit 11 stores the time data measured by the clock unit 10 together with the data of the continuous blood pressure signal measured by the blood pressure calculation unit 6 and the information indicating that abnormal blood pressure has occurred.

In the sphygmomanometer configured as described above,
FIG. 9 shows a method of storing data in the waveform storage unit 11.
This will be described with reference to FIG. The means for storing the continuous blood pressure waveform data and the time data is the same as the means described in the first embodiment with reference to FIG. When abnormal blood pressure is detected by the abnormal blood pressure detecting means 25, when writing “second” data, bit 6 which is an unused bit of “second” data is used as abnormal blood pressure identification flag 28, and 1 is written to this bit 6. Thus, information on occurrence of abnormal blood pressure can be recorded together with time.

In addition to the above, as shown in FIG. 9B, the addresses for setting the data identification flag 12 to 1 are consecutive,
A bit string in which 6 bits other than the data identification flag 12 and the abnormal blood pressure identification flag 28 are consecutively set as the abnormal blood pressure identification flag 28 when 1 is written to the bit 6 of the second address from the head and the bit 6 of the remaining address is set to 0 It is also possible to record the elapsed time from the measurement start time in units of seconds, for example, and this means is not limited.

With such a configuration, continuous blood pressure can be monitored and abnormal blood pressure can be monitored at the same time, and continuous blood pressure signal data and information on occurrence of abnormal blood pressure can be displayed together with the current time or the time from the start of measurement. Provide a highly reliable non-invasive continuous sphygmomanometer for diagnosing patients with circulatory diseases as a diurnal blood pressure fluctuation monitor because it can be stored and can be notified at the same time that abnormal blood pressure occurs. be able to.

(Embodiment 4) FIG. 10 is a block diagram showing a configuration of Embodiment 4 of the present invention.

The components denoted by the same reference numerals as those described in the first, second or third embodiment perform the same operations as those described in the first, second or third embodiment, and the description thereof will be omitted.

The electrocardiogram signal input means 29 comprises a connector for inputting a signal from an external general-purpose electrocardiogram signal detector, a buffer, and an A / D converter. The electrocardiogram signal 30 is an electrocardiogram signal subjected to A / D conversion by the electrocardiogram signal input means 29.

The continuous blood pressure signal 7 calculated by the blood pressure calculating means 6 is delayed by the signal processing time in the blood pressure calculating means 6. Therefore, in order to synchronize the time between the electrocardiogram signal 30 and the continuous blood pressure signal 7, the electrocardiogram signal 30 is delayed by the electrocardiogram signal delay means 31 which is an electrocardiogram signal synchronization means. The amount of delay is equal to the time required for signal processing by the blood pressure calculation means 6.

The delayed electrocardiogram signal 32 and the continuous blood pressure signal 7 delayed by the electrocardiogram signal delay means 31 are input to the blood pressure / electrocardiogram waveform display section 33 and the waveform storage means 11.

The blood pressure / electrocardiogram waveform display section 33 displays one or both of the delayed electrocardiogram signal 32 and the continuous blood pressure signal 7.

The clock means 10 measures the current time or the time from the start of measurement. The waveform storage means 11 stores the time data measured by the clock means 10 together with the data of the continuous blood pressure signal 7 measured by the blood pressure calculation means 6 and the data of the delayed electrocardiogram signal 32.

FIG. 11 is an external view of an apparatus displaying a blood pressure waveform and an electrocardiogram waveform simultaneously. In the sphygmomanometer configured as above, the operation of the waveform storage unit 11 is shown in FIG.
This will be described with reference to FIG.

When displaying the continuous blood pressure data calculated by the blood pressure calculating means 6 on a monitor or the like, the resolution is 7 bits (128 gradations). Also, the electrocardiogram signal input means 29
Assuming that the resolution at the time of A / D conversion of the electrocardiogram signal is also 7 bits, the case where continuous blood pressure data is stored in the blood pressure waveform signal 7 and the waveform storage means 11 (hereinafter referred to as memory) is 7 bits.
Store as bit length data. Time data 14
Must also be stored in memory at the same time. Since the data of "second" measured by the clock means 10 is 0 to 59 seconds, it requires 6 bits, and the data of "minute" also requires 6 bits. The preferred sampling time for the blood pressure waveform is 2
Since the frequency is about 00 Hz (the cycle is about 20 milliseconds), the data of "minutes" and "seconds" may be stored at a rate of one in 200 blood pressure data.

In order to store blood pressure data, electrocardiogram data, and time data in one memory, a method of determining the data is required. Here, when one address of the memory is 8-bit data, the blood pressure data and the electrocardiogram data are 7 bits,
Since the “minute” and “second” data are 6 bits, FIG.
Bit 7 is used as the data identification flag 13 as shown in FIG. This bit is set to 0 when storing blood pressure data and electrocardiogram data, and is set to 1 when storing “minute” and “second” data. When the data is read from the memory, it is possible to identify the blood pressure data or the electrocardiogram data and the time data by using this bit. Here, bit6 of the time data is set to 0.

The blood pressure data and the electrocardiogram data are identified by the addresses of the memory. Blood pressure data at even addresses,
Storing the electrocardiogram data at odd addresses enables identification.

Although the time data is written, the continuity of the blood pressure data is lost. However, when drawing a waveform, it is possible to complement the preceding and following data. Here, the time data stored in the memory is only "minutes" and "seconds", but information beyond "hours" can be identified by the memory address to be stored.

In addition, in addition to the above, as shown in FIG. 12B, addresses where the data identification flag 12 is set to 1 are made continuous, and 6 bits excluding bit 7 and bit 6 are treated as a continuous bit string, and from the measurement start time. Is recorded in, for example, seconds, blood pressure data is stored in even addresses, and electrocardiogram data is stored in odd addresses. This means is not limited.

With such a configuration, the continuous blood pressure can be monitored and the electrocardiogram signal can be monitored at the same time. If an abnormality is found in the continuous blood pressure signal data,
An ECG signal can be used as a means for determining whether the abnormality is due to an abnormality of the subject or a fluctuation in the measurement, and the continuous blood pressure signal and the ECG signal can be used together with the current time or the time from the start of the measurement. A non-invasive continuous sphygmomanometer which can be stored and is highly reliable for diagnosing a patient with a circulatory disease as a daily blood pressure fluctuation monitor can be provided.

(Fifth Embodiment) FIG. 13 is a block diagram showing a configuration of a fifth embodiment of the present invention.

The components denoted by the same reference numerals as those described in the first, second, third or fourth embodiment perform the same operations as those described in the first, second, third or fourth embodiment. Omitted.

The communication means 34 transmits the waveform data, time data, electrocardiogram data, and the like recorded in the waveform storage means 11 by communication.

FIG. 14 is a block diagram showing the internal configuration of the communication means 34. The waveform memory 35 is a memory for storing continuous blood pressure signal data and time data. The communication protocol control means 36 is means for communicating data according to a data communication protocol.
Protocol communication conforming to each standard such as et, USB (Universal Serial Bus), etc., and non-procedural communication by RS-232C connection are performed.

Further, the communication is not limited to the cable, but means using radio, infrared, or the like is also possible. The read timing generation means 37 identifies whether to transfer a waveform in real time or to transfer waveform data stored in advance at the time of blood pressure measurement, and controls each of them. To transfer the waveform in real time during blood pressure measurement, use FIFO (First In
First Out) using the memory 38. The FIFO memory 38 is a first-in first-out memory, and the blood pressure calculating means 6
Are sequentially stored and output to the sequential communication protocol control means 36. When the timing of the data measured by the blood pressure calculating means 6 and the timing of the data transferred by the communication protocol control means 36 are different, the adjustment is performed, and the data is transferred by the communication protocol predetermined by the communication protocol control means 36. .

When transferring the waveform data stored in advance, the read address generation means 39 is used to transfer the waveform data. The read address generator 39 generates an address for reading the waveform data stored in the waveform memory 35 in advance, the data is read from the waveform memory 35 in accordance with the generated address, and the data is read in advance by the communication protocol controller 36. Transferred by communication protocol.

With this configuration, the continuous blood pressure signal data and time data are stored in the memory,
By sequentially transferring the data stored in the memory or the real-time data at the time of measuring the blood pressure to another device in accordance with the communication standard, the continuous blood pressure signal can be reproduced by another computer, for example, so that a long-term blood pressure fluctuation can be achieved. Can be monitored together with the current time or the time from the start of the measurement, so that a highly reliable non-invasive continuous sphygmomanometer can be provided as a daily blood pressure fluctuation monitor for diagnosing a cardiovascular disease patient.

(Embodiment 6) FIG. 15 is a block diagram showing a configuration of Embodiment 6 of the present invention.

The components denoted by the same reference numerals as those described in the first, second, third, fourth or fifth embodiment are the same as those in the first, second, third or fourth embodiment.
Since the operation is the same as that described in 3, 4, or 5, the description is omitted.

The AC power supply 40 is, for example, a commercial power supply of 100 VAC. The DC power supply 41 is a DC power supply such as a battery. The power supply switching means 42 includes an AC power supply 40 and a DC power supply 41.
Switch. The power supply voltage monitoring means 43 monitors the voltage value output from the AC power supply 40 or the DC power supply 41 and detects that the voltage value output from the power supply becomes lower than a predetermined voltage value. When the power supply voltage monitoring means 43 detects a decrease in the voltage value when the AC power supply 40 is used, the power supply switching means 42 is controlled to switch the power supply from the AC power supply 40 to the DC power supply 41. When the DC power supply 41 is used, a configuration in which the power supply is switched to the AC power supply 40 by operating the power supply switching means 42 is also possible.

The power supply abnormality notifying means 44 is a means for notifying when the power supply voltage monitoring means 43 detects a decrease in the power supply voltage, and a suitable means may be a lamp. It is also possible to notify by using, and this is not limited.

When the power supply voltage monitoring means 43 detects a drop in the power supply voltage, the power supply abnormality detection recording means 45 records the time in the waveform recording means 11. Waveform storage means 11
A method of storing data in the storage device will be described with reference to FIG. The means for storing the continuous blood pressure waveform data and the time data is the same as the means described in the first embodiment with reference to FIG. When the power supply voltage monitoring unit 43 detects a drop in the power supply voltage, when writing the “second” data and the “minute”, the bit 6 which is an unused bit of the “second” data and the “minute” data is identified as the power supply voltage drop. This bit is used as the flag 46.
By writing 1 to 6, information indicating that the power supply voltage has dropped can be recorded with time.

In addition, in addition to the above, as shown in FIG. 15B, the addresses for setting the data identification flag 12 to 1 are consecutive, and 1 is added to bit 6 of the first and second addresses from the head.
Is written as the power supply voltage drop identification flag 46,
It is also possible to treat bit 6 of the remaining address as 0 and treat 6 bits other than the data identification flag 12 and the power supply voltage drop identification flag 46 as a continuous bit string, and record the elapsed time from the measurement start time, for example, in seconds. This means is not limited.

[0093] With this configuration, the battery is automatically switched to the AC power supply when an abnormality occurs or is cut off when the AC commercial power supply is used. Before commercial power is unavailable, blood pressure measurement is possible, and before the battery voltage drops, it is not possible to supply enough power to operate.
It can notify and record that the battery voltage has dropped, so it can be used as a daily blood pressure fluctuation monitor so that it can monitor blood pressure without interruption even in the event of a sudden power outage or when carrying it. Meter can be provided.

[0094]

As described above, according to the present invention, continuous blood pressure can be monitored, and at the same time, abnormal blood pressure can be monitored, arrhythmia can be monitored, and an electrocardiogram signal can be monitored. Information can be stored together with the current time or the time from the start of measurement.
In addition, data stored in the memory or real-time data at the time of blood pressure measurement can be transferred by communication, and a continuous blood pressure signal when abnormal blood pressure and arrhythmia occur can be transmitted together with an electrocardiogram signal. For example, data collected by a computer can be played back, and blood pressure can be measured even when commercial power is not available, such as when carrying,
It is possible to monitor blood pressure without interruption even in the event of a sudden power outage or when carrying, so as a daily blood pressure fluctuation monitor, a highly reliable non-invasive continuous blood pressure monitor for diagnosing patients with cardiovascular disease Can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of a non-invasive continuous blood pressure monitor according to Embodiment 1 of the present invention.

FIG. 2A is a first memory layout diagram of a waveform storage unit according to the first embodiment of the present invention; FIG. 2B is a second memory layout diagram of a waveform storage unit according to the first embodiment of the present invention;

FIG. 3 is a block diagram of an invisible blood continuous sphygmomanometer including a recording unit according to the first embodiment of the present invention;

FIG. 4 is a block diagram of a non-invasive continuous sphygmomanometer according to a second embodiment of the present invention.

FIG. 5 is an external view of a non-invasive continuous sphygmomanometer according to a second embodiment of the present invention.

FIG. 6 is an operation explanatory diagram of arrhythmia detection in Embodiment 2 of the present invention.

FIG. 7A is a first memory arrangement diagram of a waveform storage unit according to the second embodiment of the present invention; and FIG. 7B is a second memory arrangement diagram of a waveform storage unit according to the second embodiment of the present invention.

FIG. 8 is a block diagram of a non-invasive continuous sphygmomanometer according to a third embodiment of the present invention.

FIG. 9A is a first memory arrangement diagram of a waveform storage unit according to the third embodiment of the present invention. FIG. 9B is a second memory arrangement diagram of a waveform storage unit according to the third embodiment of the present invention.

FIG. 10 is a block diagram of a non-invasive continuous sphygmomanometer according to a fourth embodiment of the present invention.

FIG. 11 is an external view of a non-invasive continuous sphygmomanometer according to a fourth embodiment of the present invention.

FIG. 12A is a first memory layout diagram of a waveform storage unit according to a fourth embodiment of the present invention; and FIG. 12B is a second memory layout diagram of a waveform storage unit according to the fourth embodiment of the present invention.

FIG. 13 is a block diagram of a non-invasive continuous sphygmomanometer according to a fifth embodiment of the present invention.

FIG. 14 is a block diagram showing the inside of a communication unit according to the fifth embodiment of the present invention;

FIG. 15 is a block diagram of a non-invasive continuous sphygmomanometer according to a sixth embodiment of the present invention.

FIG. 16A is a first memory arrangement diagram of a waveform storage unit according to the sixth embodiment of the present invention; and FIG. 16B is a second memory arrangement diagram of a waveform storage unit according to the sixth embodiment of the present invention.

FIG. 17 is a block diagram of a conventional non-invasive continuous sphygmomanometer;

FIG. 18 is a configuration diagram of a conventional non-invasive continuous blood pressure monitor.

[Explanation of symbols]

 Reference Signs List 1 Non-invasive continuous sphygmomanometer body 2 Exciter 4 Non-invasive sensor 5 Calibration sphygmomanometer 6 Blood pressure calculation means 10 Clock means 11 Waveform storage means 18 Arrhythmia detection means 19 Arrhythmia notification means 24 Blood pressure average value calculation means 25 Abnormality Blood pressure detection means 26 Blood pressure reference value setting means 27 Abnormal blood pressure notification means 29 ECG signal input means 31 ECG signal delay means 34 Communication means 42 Power supply switching means 44 Power supply abnormality notification means 45 Power supply abnormality detection recording means

Claims (14)

[Claims] 1. An exciter for vibrating a blood vessel in a living body, a non-invasive sensor for receiving an oscillation provided by the exciter and propagating on the blood vessel and converting it into an electric signal, and measuring an absolute value of a blood pressure. Calibration sphygmomanometer, blood pressure calculation means for calculating the blood pressure in the living body by the measurement value of the calibration sphygmomanometer and the measurement value of the non-invasive sensor, blood pressure value measured by the blood pressure calculation means, A non-invasive continuous sphygmomanometer comprising a waveform storage means for identifiably storing information on the time when the blood pressure value is measured. 2. An arrhythmia detecting means for detecting an arrhythmia and recording occurrence of the arrhythmia in a waveform recording means.
The non-invasive continuous sphygmomanometer according to the above. 3. The non-invasive continuous sphygmomanometer according to claim 1, further comprising arrhythmia notifying means for notifying detection of arrhythmia. 4. A reference systolic blood pressure value setting means for storing a reference systolic blood pressure value which is a reference value of an arbitrarily set systolic blood pressure value, and a systolic blood pressure value based on the blood pressure value measured by the blood pressure calculating means. And a systolic blood pressure abnormality detecting an abnormal blood pressure value by comparing at least one systolic blood pressure value calculated by the systolic blood pressure value calculating device with the reference systolic blood pressure value. 4. The non-invasive continuous sphygmomanometer according to claim 1, further comprising a detecting means. 5. A reference diastolic blood pressure value setting means for storing a reference diastolic blood pressure value which is a reference value of an arbitrarily set diastolic blood pressure value, and a diastolic blood pressure value based on the blood pressure value measured by the blood pressure calculating means. Diastolic blood pressure value calculating means, and at least one diastolic blood pressure value calculated by the diastolic blood pressure value calculating means and the reference diastolic blood pressure value to detect an abnormal diastolic blood pressure value 5. The non-invasive continuous sphygmomanometer according to claim 1, further comprising a detecting means. 6. The non-invasive continuous sphygmomanometer according to claim 4, further comprising a systolic blood pressure abnormality detection and recording means for detecting systolic blood pressure abnormality and recording the occurrence of the systolic blood pressure abnormality in a waveform recording means. 7. The non-invasive continuous sphygmomanometer according to claim 5, further comprising a diastolic blood pressure abnormality detecting and recording means for detecting the diastolic blood pressure abnormality and recording the occurrence of the diastolic blood pressure abnormality in a waveform recording means. 8. The non-invasive continuous sphygmomanometer according to claim 4, further comprising a systolic blood pressure abnormality notification means for notifying the detection of the systolic blood pressure abnormality. 9. The non-invasive continuous sphygmomanometer according to claim 5, further comprising a diastolic blood pressure abnormality notification means for notifying detection of diastolic blood pressure abnormality. 10. An electrocardiogram signal input means for inputting an electrocardiogram signal, an electrocardiogram signal synchronizing means for synchronizing a blood pressure signal output from the blood pressure calculation means and a time of the electrocardiogram signal output from the electrocardiogram signal input means, and the electrocardiogram. And a waveform recording unit for recording a signal and the blood pressure signal.
The non-invasive continuous sphygmomanometer according to 3, 4, 5, 6, 7, 8 or 9. 11. The apparatus according to claim 1, further comprising a waveform recording communication means for transmitting information recorded in the waveform recording means.
The non-invasive continuous sphygmomanometer according to 5, 6, 7, 8, 9 or 10. 12. A power supply switching means for switching to a second power supply means when detecting that a voltage value of the first power supply means becomes lower than a preset voltage value.
12. The non-invasive continuous sphygmomanometer according to 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11. 13. The invisible power supply according to claim 12, further comprising a power supply abnormality detection recording means for comparing a voltage value of the first power supply means with a preset value, detecting an abnormality and recording the abnormality in the waveform recording means. Blood type continuous sphygmomanometer. 14. The non-invasive continuous sphygmomanometer according to claim 12, further comprising a power supply abnormality notifying unit that compares a voltage value of the first power supply unit with a preset value and notifies an abnormality.