JP2000279385A - Portable electrocardiograph - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable electrocardiograph that has realized the tangible record of arrhythmia of which the frequency of generation is very small. SOLUTION: The electrocardiac data of a client is detected by an electrocardiac sensor 1, amplified at an electrocardiac amplifier 2 and, after being A/D converted at an A/D converter 3, alternatively memorized with the time information at a memory part 6 through a computing and controlling part 4 according to a memory loop system. The computing and controlling part 4 judges whether the electrocardiac data memorized at a memory part 6 means arhythmia or not by comparing them with the normal electrocardiac data in an inner memory 5. If it means arrhythmia, the alteration of the memory at the memory part 6 is stopped after a certain time has passed. A displaying and operating part 7 operates for the purpose of starting the measurement or displaying the obtained data of arrhythmia and displays the electrocardiac data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable electrocardiograph capable of recording electrocardiographic information even in a heart disease having a very low frequency of occurrence and reproducing and displaying an electrocardiogram waveform as required. It is about.

[0002]

2. Description of the Related Art A conventional portable electrocardiograph continuously records data obtained by converting an electrocardiographic signal into an analog signal or a digital signal on a magnetic tape.

[0003]

In such a conventional portable electrocardiograph, continuous recording is performed irrespective of whether or not a heart disease has occurred. There was a problem that recording could not be performed if it did not occur.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and enables long-term wearing so that heart disease having a very low frequency of occurrence can be reliably detected, and important electrocardiographic signal data without subjective symptoms. The present invention provides a portable electrocardiograph that also enables recording of the subject.

[0005]

According to the portable electrocardiograph of the present invention, an electrocardiographic signal is detected by an electrocardiographic sensor, the detected signal is amplified by an electrocardiographic amplifier, and the amplified signal is A / D converted. A / D conversion is performed by a device, the converted data is temporarily stored in a storage unit, and an arithmetic / control unit determines whether the data stored in the storage unit is an arrhythmia. .

Thus, the electrocardiograph can store only data suspected of having a heart disease, and can be easily used without bothering the subject.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 of the present invention provides an electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying an electrocardiographic signal from the electrocardiographic sensor, and An A / D converter for A / D converting an output signal of the electrocardiographic amplifier;
An internal memory for storing normal electrocardiographic data;
A storage unit for temporarily storing data converted by the / D converter, a calculation / control unit for determining whether the data is arrhythmia, and an operation of processing contents executed by the calculation / control unit And a display / operation unit for displaying calculation results, and automatically stores the data when an arrhythmia is detected.

In the above embodiment, an electrocardiographic signal is detected by an electrocardiographic sensor, the detected signal is amplified by an electrocardiographic amplifier, the amplified signal is A / D converted by an A / D converter, and the converted signal is converted. The data is temporarily stored in a storage unit via an arithmetic and control unit, and this data is compared with normal electrocardiographic data in an internal memory, and the arithmetic and control unit determines whether the data is arrhythmic. Therefore, only necessary data can be obtained, and it can be worn on the human body for a long time.

According to a second aspect of the present invention, there is provided an electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying an electrocardiographic signal from the electrocardiographic sensor, and an electrocardiographic amplifier for the electrocardiographic amplifier. An A / D converter for A / D converting an output signal, an internal memory for storing normal electrocardiographic data, and temporarily storing data converted by the A / D converter. A first storage unit;
A second storage unit for storing a plurality of data determined to be arrhythmia; a calculation / control unit for determining whether the data is arrhythmia; an operation and a calculation result of processing contents executed by the calculation / control unit Is displayed, and automatically stored each time an arrhythmia is detected.

In the above embodiment, an electrocardiographic signal is detected by an electrocardiographic sensor, the detected signal is amplified by an electrocardiographic amplifier, the amplified signal is A / D converted by an A / D converter, and the converted signal is converted. The data is temporarily stored in the first storage unit via the operation / control unit, and this data is compared with normal electrocardiographic data in the internal memory by the operation / control unit. Determine if it is an arrhythmia. If the determined data is arrhythmia, the electrocardiographic data stored in the first storage unit is transferred to the second storage unit and stored therein, so that not only necessary data but also accurate diagnosis can be obtained. It is possible to acquire a plurality of pieces of data and to wear it on a human body for a long period of time.

According to a third aspect of the present invention, in the first or second aspect, the arithmetic / control unit has a function of determining an arrhythmia and its type. The arrhythmia and its type are determined by the operation / control unit of the output signal of (1), and data for accurate diagnosis can be obtained.

According to a fourth aspect of the present invention, in the second or third aspect, the calculation / control section has a function of statistically calculating the detected arrhythmia for each time or type. Therefore, data obtained by calculating statistical results for accurate diagnosis of arrhythmia can be obtained by the calculation / control section.

According to a fifth aspect of the present invention, in the first or second aspect, the subject is provided with a notification unit for notifying the subject when an arrhythmia is detected. Know what's going on.

According to a sixth aspect of the present invention, in accordance with the first or second aspect, a switch operated by a subject when an arrhythmia is felt is provided, and the presence or absence of an arrhythmia subjective symptom signal from the switch is stored. Since we can do it,
For the occurring arrhythmia, data on the presence or absence of subjective symptoms is also included, and data for more accurate diagnosis can be obtained.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

(Embodiment 1) FIG. 1 is a block diagram showing the invention of Embodiment 1 of the portable electrocardiograph of the present invention. The portable electrocardiograph includes an electrocardiographic sensor 1 worn on a subject and an electrocardiographic amplifier 2 for amplifying an electrocardiographic signal detected by the electrocardiographic sensor 1.
And the electrocardiographic signal amplified by the electrocardiographic amplifier 2 is represented by A /
A / D converter 3 for D / D conversion, and the electrocardiogram signal converted by this A / D converter 3 is compared with normal electrocardiographic data to determine whether or not it is an arrhythmia, and to control the whole. , An internal memory 5 for storing normal electrocardiographic data, a storage (RAM) 6 as a working memory and a user memory, and the arithmetic and control unit 4. And a display / operation unit 7 for displaying the processing contents to be executed and the processing result.

In the first embodiment, the electrocardiographic data of the subject
Is detected by the ECG sensor 1 and the ECG amplifier 2
, And A / D converted by the A / D converter 3. The A / D-converted electrocardiographic data is supplied to the arithmetic / control unit 4
Is updated and stored in the storage unit 6 together with the time information via the memory loop method. The arithmetic and control unit 4 is a storage unit 6
Is compared with the normal electrocardiographic data in the internal memory 5 to determine whether or not an arrhythmia has occurred. If the arrhythmia has occurred, the storage update of the storage unit 6 is stopped after a certain period of time. .
The display / operation unit 7 is operated to display or display the arrhythmia data obtained by starting the measurement or the acquired arrhythmia data to display the electrocardiogram data.

Next, the algorithm of the processing performed by the arithmetic and control unit 4 will be described with reference to FIG. 5 by referring to step 1, step 2 to step 12 (hereinafter referred to as S1, S2 to S12). In S1, if the measurement key of the display / operation unit 7 is pressed, the process proceeds to S2, and if not, the process proceeds to S8. In S2, the detected electrocardiographic data is A / D converted by the A / D converter 3, and the process proceeds to S3. In S3, A /
The D-converted electrocardiographic data is temporarily stored in the storage unit 6 together with time information in a memory loop manner, and the process proceeds to S4. S
In step 4, the electrocardiogram data stored in the storage section 6 is compared with the normal electrocardiogram data stored in the internal memory 5, and the process proceeds to S5. If it is determined in S5 that the electrocardiographic data stored in the storage unit 6 is an arrhythmia, the process proceeds to S6.
If it is determined that the arrhythmia is not present, the process proceeds to S7.
In S6, recording / updating in the storage unit 6 is performed for the time T1 after the determination is completed, and the algorithm is terminated after the time T1 elapses. The time T1 is preferably set to a half of the time during which data can be recorded in the storage unit 6. For example, if the time for recording data in the storage unit 6 is 6 minutes, the time T1 is 3 minutes.

In S7, if the cancel key is pressed, the algorithm is terminated, and if not, the process returns to S2. In S8, if the display key has been pressed, the process proceeds to S9, and if not, the process returns to S1. In S9,
The waveform data stored in the storage unit 6 is read into the arithmetic and control unit 4, and the process proceeds to S10. In S10, the read waveform data is converted into display data, transferred to the display / operation unit 7, and the process proceeds to S11. In S11, the transferred waveform data is displayed on the display / operation unit 7, and the flow advances to S12. S
In step 12, if the stop key is pressed, the algorithm is terminated. If not, the process returns to step S11.

As described above, only necessary data can be obtained, and the device can be worn on a human body for a long period of time, so that usability can be improved.

In the above description, the time T1 is stored in the storage unit 6.
Of the recording time, but may be shorter or longer than 1/2.

(Embodiment 2) FIG. 2 is a block diagram showing the invention of Embodiment 2 of the portable electrocardiograph of the present invention. This portable electrocardiograph is the same as the invention of the first embodiment except that the portable electrocardiograph is provided with a first storage section and a second storage section. Omit the description,
The different points will be mainly described.

Reference numeral 8 denotes a first storage unit, which is a working memory for temporarily storing data converted by the A / D converter 3. Reference numeral 9 denotes a second memory, which is a user memory for storing a plurality of data determined as arrhythmia.

In the second embodiment, the electrocardiographic data of the subject
Is detected by the ECG sensor 1 and the ECG amplifier 2
, And A / D converted by the A / D converter 3. The A / D-converted electrocardiographic data is supplied to the arithmetic / control unit 4
Along with the time information in the first storage unit 8 via the
It is updated and stored in a loop manner. The arithmetic and control unit 4 stores the electrocardiogram data stored in the first storage unit 8 in the internal memory 5.
Then, it is determined whether or not the heartbeat data is arrhythmia by comparing with the normal electrocardiogram data. If the heartbeat is arrhythmia, the electrocardiogram data stored in the first storage unit 8 is transferred and stored in the second storage unit 9. The display / operation unit 7 displays the electrocardiogram data when the operation for starting the measurement or displaying the acquired arrhythmia data or the display is performed.

Next, the algorithm of the processing performed by the arithmetic and control unit 4 will be described with reference to FIG. In S21, the measurement key
If is pressed, the process proceeds to S22, and if not, the process proceeds to S31. In S22, the waveform number i = 1 is substituted, and the process proceeds to S23. In S23, the detected electrocardiographic data is A / D converted by the A / D converter 3, and the process proceeds to S24.
At S24, the A / D converted electrocardiographic data is transferred to the first storage unit 8 via the calculation / control unit 4, and recorded together with time information in a memory loop manner, and the process proceeds to S25. In S25, the electrocardiogram data recorded in the first storage section 8 is compared with the normal electrocardiogram data stored in the internal memory 5, and the flow proceeds to S26. In S26, the first storage unit 8
If it is determined that the electrocardiographic data recorded in step 2 is not an arrhythmia, the process proceeds to step S27.
Proceed to 28. In step S27, if the cancel key is pressed, the algorithm is terminated. If not, step S23 is performed.
Return to In S28, the contents of the first storage unit 8 are transferred and stored in the second storage unit 9, and the process proceeds to S29. If there is free space in the second storage unit 9 in S29,
Proceed to 30 and terminate the algorithm if there is no free space. In S30, i + 1 is substituted for the waveform number i, and the process returns to S23. In S31, if the display key is pressed, the process proceeds to S32, and if not, S21.
Return to In S32, the waveform data stored in the second storage unit 9 is read into the arithmetic and control unit 4, and the process proceeds to S33.
In S33, the read waveform data is converted into display data, transferred to the display / operation unit 7, and the flow advances to S34. S3
At 4, the waveform number i is set to 1, and the process proceeds to S35. S3
In 5, the waveform data of the waveform number i is displayed on the display / operation unit 7, and the process proceeds to S36. In step S36, if the cancel key is pressed, the algorithm ends, and if not, the process proceeds to step S37. In S37, if the display switching key has been pressed, the flow proceeds to S38, and if not, the flow returns to S35. In S38, the waveform number i to be displayed is selected, and the process returns to S35.

As described above, not only the necessary electrocardiographic data can be obtained, but also a plurality of electrocardiographic data can be obtained, and the device can be worn on the human body for a long period of time. be able to.

(Embodiment 3) FIG. 3 is a block diagram showing the invention of Embodiment 3 of the portable electrocardiograph of the present invention. This portable electrocardiograph is the same as the inventions of the first and second embodiments except that it has an internal memory for storing not only normal electrocardiographic data but also various arrhythmia data. The portions having the above-described configuration and operation and effect are denoted by the same reference numerals, detailed description thereof will be omitted, and different points will be mainly described.

An internal memory 51 is formed to store normal electrocardiographic data and various arrhythmia data.

In the third embodiment, the arithmetic and control unit 4 includes normal electrocardiographic data stored in the internal memory 51, various arrhythmia data, and the heart temporarily stored in the storage unit 6. By comparing the electrocardiogram data and determining what kind of arrhythmia the electrocardiogram data is, it can be displayed together with the waveform data when displaying the result.

As described above, when displaying electrocardiographic data in a waveform, it is possible to know at a glance what kind of arrhythmia has occurred, so that data for more accurate diagnosis can be obtained.

(Embodiment 4) FIG. 4 is a block diagram showing the invention of Embodiment 4 of the portable electrocardiograph of the present invention. This portable electrocardiograph is the same as the inventions of the second and third embodiments except that the portable electrocardiograph is provided with a calculation / control unit having a function of statistically calculating the detected arrhythmia for each time or type. The same reference numerals are given to the parts having the functions and effects, detailed description is omitted, and different points will be mainly described.

Reference numeral 41 denotes an arithmetic / control unit which compares the electrocardiographic signal converted by the A / D converter 3 with normal electrocardiographic data to determine whether or not it is an arrhythmia, and controls the overall control. Further, for the detected arrhythmia, time information and type information of the arrhythmia are added, and a function is provided for statistically calculating for each time or type.

In the fourth embodiment, the operation / control unit 41
Compares the normal electrocardiographic data stored in the internal memory 5 with the electrocardiographic data temporarily stored in the storage unit 6 to determine what kind of arrhythmia the electrocardiographic data is. The number of arrhythmias that occurred per hour, or the number of arrhythmias that occurred for each type,
Alternatively, by combining them, it is possible to calculate what kind of arrhythmia and how many times have occurred at each time.

Therefore, by displaying the calculation result on the display / operation unit 7, the subject's electrocardiographic data can be grasped at a glance, and the electrocardiographic data for more accurate diagnosis can be obtained.
Data can be obtained.

(Embodiment 5) FIG. 3 is a block diagram showing the invention of Embodiment 5 of the portable electrocardiograph of the present invention. This portable electrocardiograph is the same as the invention of the first embodiment except that the portable electrocardiograph is provided with a notification unit for notifying a subject when an arrhythmia is detected. Therefore, a detailed description will be omitted, and different points will be mainly described.

Reference numeral 10 denotes a notification unit such as a buzzer for notifying the subject that an arrhythmia has occurred when an arrhythmia is detected, and obtains a signal from the calculation / control unit 4.

In the fifth embodiment, when the arithmetic / control section 4 determines that an arrhythmia has occurred, the output is input to the notifying section 10 to notify the subject and notify the subject.

Therefore, the subject can know the arrhythmia which he / she is not aware of, so that he / she can take a wide range of measures in life and obtain electrocardiographic data for making an accurate diagnosis. In the above embodiment, the notification unit 10 is a buzzer, but the same effect can be expected with an LED or a vibrator.

(Embodiment 6) FIG. 4 is a block diagram showing the invention of Embodiment 6 of the portable electrocardiograph of the present invention. This portable electrocardiograph is the same as the invention of the first embodiment except that a switch operated by the subject is provided when there is a subjective symptom of arrhythmia. The detailed description will be omitted, and different points will be mainly described.

Reference numeral 11 denotes a switch connected to the input side of the arithmetic / control section 4, which is operated by the subject when there is a subjective symptom of arrhythmia.

In the sixth embodiment, when the subject has a subjective symptom due to an irregular pulse, the subject operates the switch 11 and the data is stored in the storage section 6 to display the arrhythmia data. It can be displayed together with the waveform data.

Therefore, when the arrhythmia data is displayed,
The presence or absence of whether or not the subject is aware of the arrhythmia can also be displayed, and a wide range of data for accurate diagnosis can be obtained.

[0043]

As described above, the invention according to claim 1 of the present invention comprises an electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying the electrocardiographic signal from the electrocardiographic sensor. An A / D converter for A / D converting an output signal of the electrocardiographic amplifier, an internal memory for storing normal electrocardiographic data, and data converted by the A / D converter. A storage unit for temporarily storing the data, an arithmetic and control unit for determining whether the data is an arrhythmia, a display and operation unit for displaying the operation of the processing contents executed by the arithmetic and control unit and the arithmetic result. It is designed to automatically memorize if arrhythmia is detected,
Only necessary data can be obtained, and it can be worn on a human body for a long period of time, so that usability can be improved.

According to a second aspect of the present invention, there is provided an electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying an electrocardiographic signal from the electrocardiographic sensor, and an output of the electrocardiographic amplifier. An A / D converter for A / D converting a signal; an internal memory for storing normal electrocardiographic data; and a second memory for temporarily storing data converted by the A / D converter. A first storage unit, a second storage unit that stores a plurality of data determined to be arrhythmia,
A calculation / control unit for determining whether the data is arrhythmia; and a display / operation unit for displaying the operation of the processing contents executed by the calculation / control unit and the calculation result. Since a plurality of data as well as necessary data can be acquired, diagnostic accuracy can be improved.

According to a third aspect of the present invention, in the first or second aspect, the arithmetic and control unit has a function of determining an arrhythmia and its type, so that the arrhythmia and its type can be determined and diagnosed. Accuracy can be increased.

According to a fourth aspect of the present invention, in the second or third aspect, the detected arrhythmia is
Calculates the function to calculate statistically for each time or type
Since the control unit is provided, data obtained by calculating a statistical result can be obtained, and diagnostic accuracy can be improved.

Further, the invention according to claim 5 is provided with the notifying unit for notifying the subject when an arrhythmia is detected according to claim 1 or 2, so that it is possible to know that an unconscious irregular pulse has occurred. In this way, it is possible to improve the correspondence and diagnosis accuracy in a wide range of life.

According to a sixth aspect of the present invention, in the first or second aspect, a switch operated by a subject when an arrhythmia is felt is provided, and the presence or absence of an arrhythmia subjective symptom signal from the switch can be stored. As a result, data on the presence or absence of a subjective symptom is also entered for the occurring arrhythmia, and the diagnosis accuracy can be further improved.

[Brief description of the drawings]

FIG. 1 is a block circuit diagram showing a portable electrocardiograph according to a first embodiment of the present invention.

FIG. 2 is a block circuit diagram showing a portable electrocardiograph according to the second embodiment.

FIG. 3 is a block circuit diagram showing a portable electrocardiograph according to the third and fifth embodiments.

FIG. 4 is a block circuit diagram showing a portable electrocardiograph according to the fourth and sixth embodiments.

FIG. 5 is a flowchart showing processing contents in a calculation / control unit in the portable electrocardiograph of the first embodiment.

FIG. 6 is a flowchart showing processing contents in a calculation / control unit in the portable electrocardiograph of the second embodiment.

[Description of Signs] 1 electrocardiographic sensor 2 electrocardiographic amplifier 3 A / D converter 4, 41 arithmetic / control unit 5, 51 internal memory 6 storage unit 8 first storage unit 9 second storage unit 10 notification unit 11 switch

Claims (6)

[Claims] 1. An electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying an electrocardiographic signal from the electrocardiographic sensor, and an A / D converter for A / D converting an output signal of the electrocardiographic amplifier.
A D converter, an internal memory for storing normal electrocardiographic data, a storage section for temporarily storing data converted by the A / D converter, and an arrhythmia for the data. A mobile phone having an arithmetic / control unit for determining whether or not the operation and the processing result to be executed by the arithmetic / control unit are displayed, and a display / operation unit for displaying an arithmetic result, and automatically storing the data when an arrhythmia is detected. Type electrocardiograph. 2. An electrocardiographic sensor for detecting an electrocardiographic signal of a human body, an electrocardiographic amplifier for amplifying an electrocardiographic signal from the electrocardiographic sensor, and an A / D converter for A / D converting an output signal of the electrocardiographic amplifier.
A D converter, an internal memory that stores normal electrocardiographic data, a first storage unit that temporarily stores data converted by the A / D converter, and an arrhythmia determined. A second storage unit for storing a plurality of data, a calculation / control unit for determining whether the data is an arrhythmia, and a display for displaying an operation of a processing content executed by the calculation / control unit and a calculation result. A portable electrocardiograph that has an operation unit and automatically stores the arrhythmia every time it is detected. 3. The portable electrocardiograph according to claim 1, wherein the arithmetic and control unit has a function of determining an arrhythmia and its type. 4. The portable electrocardiograph according to claim 2, wherein the calculation / control section has a function of statistically calculating the detected arrhythmia for each time or type. 5. The portable electrocardiograph according to claim 1, further comprising a notification unit for notifying a subject when an arrhythmia is detected. 6. The portable electrocardiograph according to claim 1, further comprising a switch operated by a subject when an arrhythmia is felt, so that a subjective symptom signal of the arrhythmia can be stored from the switch.