JP3557192B2 - Portable electrocardiograph - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a portable electrocardiograph that measures and stores electrocardiogram data, and more particularly to a portable electrocardiograph that reports that an emergency has occurred in response to a switch operation.
[0002]
[Prior art]
2. Description of the Related Art A portable electrocardiograph that carries an electrocardiograph so that a patient having a heart disease can continuously measure electrocardiogram data while living a daily life is conventionally known. The electrocardiogram data measured and stored by the portable electrocardiograph is delivered to a doctor, who performs a medical examination based on the received electrocardiogram data.
[0003]
[Problems to be solved by the invention]
The above-mentioned portable electrocardiograph does not include a means for reporting that an emergency has occurred to a patient's home or an emergency contact at a hospital or the like, even when the patient carries the arrhythmia. Therefore, if there is no telephone near the patient, or even if there is a telephone near the patient, the patient cannot immediately reach the telephone, etc. May not be notified, which may delay the treatment of the patient by a doctor or the like.
[0004]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a switch and a reporting unit for reporting wirelessly in response to operation of the switch, thereby reporting a arrhythmia or the like. An object of the present invention is to provide a portable electrocardiograph which can notify an emergency contact to an emergency contact by a patient carrying the patient only by operating a switch when an emergency should occur. .
[0005]
[Means for Solving the Problems]
A portable electrocardiograph according to a first aspect of the present invention is a portable electrocardiograph that measures and stores electrocardiogram data, wherein a switch, a reporting unit that wirelessly reports in response to an operation of the switch, and the switch is operated. And determining means for determining whether or not a situation to be reported has occurred based on the stored electrocardiogram data.If the decision means determines that the situation to be reported has occurred, the reporting means It is characterized by being notified by radio .
[0006]
In the first invention, by providing a switch and a reporting means for reporting wirelessly in response to the operation of the switch, when an emergency such as arrhythmia to be reported occurs, the patient simply operates the switch. , The emergency contact can be notified of the occurrence of an emergency, so that even if there is no telephone or other reporting means near the patient, the notification can be made immediately, which enables prompt treatment of the patient It can be performed.
[0008]
Further, in the first invention, by providing means for determining whether or not a situation to be reported has occurred based on the stored electrocardiogram data, whether an emergency situation such as arrhythmia actually occurred in the patient, or Since it is possible to determine whether the switch has been operated by mistake, it is possible to prevent a report due to an incorrect switch operation and improve the reliability of the report.
[0009]
In the portable electrocardiograph according to the second invention, in the second invention, when it is determined by the determination means that a situation to be reported has not occurred, information for requesting confirmation of whether or not to report is output. Output means for performing the output, and when the switch is operated again after the output by the output means, the notification means is adapted to wirelessly notify.
[0010]
In the second invention, the portable electrocardiograph is provided by further including an output unit that outputs information for requesting confirmation of whether or not to report when it is determined that a situation to be reported has not occurred. If the patient who is carrying notices that the information has been output and a situation has to be reported rather than an erroneous operation, the patient operates the switch again, and the portable electrocardiograph gives the report. Do. With this, even when the portable electrocardiograph determines that a situation that should be reported has not occurred, the patient can operate the switch and report when the patient feels any subjective symptoms. Can be performed quickly.
[0011]
Portable electrocardiograph according to the third invention, in any one of the first or second invention, characterized by further comprising an acceleration measurement unit that measures the acceleration data.
[0012]
According to the third aspect of the present invention, by providing the acceleration measuring unit, the electrocardiogram data and the acceleration data stored in the portable electrocardiograph are compared with each other, so that the movement of the patient's heart and the operation performed by the patient can be applied to the patient's body. Since the correlation with the load can be obtained, a doctor or the like can perform a more reliable diagnosis on the patient based on the correlation.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be described with reference to the drawings showing the embodiments.
FIG. 1 is a block diagram showing a configuration of a portable electrocardiograph according to the present invention. The portable electrocardiograph 10 includes a control unit 11, an electrocardiogram measurement unit 12, an acceleration measurement unit 13, an internal storage unit 14 such as a flash memory, an external storage unit 15 such as a slot for inserting a memory card, a PHS card, and the like. A communication unit 16 for performing wireless communication, an emergency call switch 17, a lamp 18 such as an LED, and the like are provided.
[0014]
The control unit 11 is configured by an MPU or the like, is connected to the above-described hardware via a bus, and executes a program necessary for the operation of the portable electrocardiograph 10 stored in the internal storage unit 14. Perform a predetermined function.
[0015]
The electrocardiogram measurement unit 12 is a means for measuring electrocardiogram data of a patient, amplifies an electrocardiogram signal detected by an electrode brought into contact with the body surface of the patient, performs A / D conversion, and outputs electrocardiogram data. The acceleration measuring unit 13 is a unit that measures acceleration data indicating a change in acceleration due to the movement of the patient, amplifies an acceleration signal detected by a sensor that detects acceleration, performs A / D conversion, and outputs acceleration data. The acceleration data is measured to correlate the movement of the patient's heart with the load on the patient's body due to the actions performed by the patient by comparing it with the electrocardiogram data.
[0016]
The electrocardiogram data measured by the electrocardiogram measurement unit 12 and the acceleration data measured by the acceleration measurement unit 13 are stored in the internal storage unit 14. Further, the internal storage unit 14 stores emergency contact information such as a telephone number of a home or a hospital, which is a destination to notify that an emergency has occurred. The communication unit 16 communicates with the emergency contact information stored in the internal storage unit 14 to make a wireless report.
[0017]
The emergency notification switch 17 is a switch that is pressed to notify that an emergency has occurred by the patient being aware of arrhythmia or the like. When the emergency notification switch 17 is pressed, the control unit 11 determines whether a situation to be notified has occurred based on the electrocardiogram data for a predetermined time (for example, the past 5 minutes) stored in the internal storage unit 14. The judgment is made. The lamp 18 is a means for outputting information requesting confirmation of whether or not to report, and blinks when the control unit 11 determines that a situation to be reported has not occurred based on the electrocardiogram data. And ask the patient to confirm whether or not to report.
[0018]
Next, a method in which the control unit 11 determines whether a situation to be notified has occurred based on electrocardiogram data for a predetermined time stored in the internal storage unit 14 will be described. The waveform shown in FIG. 4A is an electrocardiogram waveform indicating electrocardiogram data stored in the internal storage unit 14, and the horizontal axis is time. By focusing on a component called an R-wave having the sharpest appearing peak among several types of components forming the electrocardiogram waveform, an arrhythmia occurred due to an interval between adjacent peaks of the R-wave (RR interval). Can be determined.
[0019]
The control unit 11 detects the peak of the R wave existing in the electrocardiogram data for a predetermined time, and obtains the RR interval. Based on the obtained RR interval, for example, when the maximum value of the RR interval is larger than a preset threshold value of the maximum value, the minimum value of the RR interval is set to the predetermined minimum value. If smaller than the threshold value, or if the average value of the RR interval is larger than the preset threshold value of the average value, the arrhythmia has occurred, and the control unit 11 has generated a situation to report. Is determined. In this way, it is determined whether or not a situation to be reported has occurred.
[0020]
Next, a processing procedure of the control unit 11 of the portable electrocardiograph 10 according to the present invention will be described based on a flowchart shown in FIG.
[0021]
The control unit 11 determines whether or not the emergency notification switch 17 has been pressed (step S1). If it is determined that the emergency notification switch 17 has not been pressed (step S1: NO), the determination is performed at appropriate timing until it is determined that the switch has been pressed. Do.
[0022]
If it is determined in step S1 that the emergency notification switch 17 has been pressed (step S1: YES), the control unit 11 generates a situation to report based on the electrocardiogram data for a predetermined time stored in the internal storage unit 14. It is determined whether or not the process has been performed (step S2).
[0023]
When it is determined in step S2 that a situation to be reported has occurred (step S2: YES), the control unit 11 causes the communication unit 16 to perform communication with the emergency contact information stored in the internal storage unit 14. Then, the fact that an emergency has occurred is notified wirelessly (step S3), and the process ends.
[0024]
If it is determined in step S2 that a situation to be reported has not occurred (step S2: NO), the control unit 11 starts blinking the lamp 18 to request confirmation of whether or not to report to the patient ( Step S4). Then, it is determined whether or not the emergency notification switch 17 has been pressed again (step S5). If it is determined that the emergency notification switch 17 has been pressed (step S5: YES), the process proceeds to step S3 to make a wireless notification. Through these processes, even if no arrhythmia occurs in the electrocardiogram data, it is possible to make a notification based on some subjective symptoms of the patient.
[0025]
If it is determined in step S5 that the emergency notification switch 17 has not been pressed (step S5: NO), it is determined whether or not a predetermined time has elapsed since the start of blinking of the lamp 18 in step S4. (Step S6) If it is determined that the time has not elapsed (Step S6: NO), the process returns to Step S5, and it is determined again whether or not the emergency call switch 17 is pressed again. If it is determined in step S6 that the predetermined time has elapsed (step S6: YES), the control unit 11 stops the blinking of the lamp 18 (step S7), and ends the processing. Through these processes, a report due to an erroneous operation of the emergency report switch 17 is prevented.
[0026]
In the present embodiment, when the control unit 11 determines that a situation that should be reported has not occurred, the portable electrocardiograph may be used as a unit that outputs information requesting confirmation of whether or not to be reported. Although 10 is provided with the lamp 18, the present invention is not limited to this. For example, a speaker that emits sound to request confirmation or a vibrator that vibrates and requests confirmation may be used.
[0027]
By the way, the electrocardiogram data stored in the internal storage unit 14 included in the portable electrocardiograph 10 according to the present invention is stored in a memory card in the external storage unit 15, and the electrocardiogram data stored in the memory card is analyzed by an analyzer. Is analyzed by In addition, the electrocardiogram data sequentially stored in the internal storage unit 14 is transmitted to the analysis device in real time by the communication unit 16, and the transmitted electrocardiogram data is analyzed, so that the analysis device performs analysis in real time. Hereinafter, an analysis device for analyzing the above-described electrocardiogram data will be described.
[0028]
FIG. 3 is a block diagram illustrating a configuration of an analysis device using a computer. The analysis device 20 has the same configuration as a known computer, and includes a control unit 21 including a CPU, a RAM 22, an internal storage unit 23 such as a hard disk, and an external storage unit 24 such as a slot for inserting a memory card. I have. Based on a computer program stored in the internal storage unit 23 and loaded into the RAM 22 from the internal storage unit 23, the control unit 21 executes a process required for the analysis device 20.
[0029]
The analysis device 20 includes an input unit 25 such as a keyboard, a mouse, and a touch panel that receives an operation of an operator, a display unit 26 such as a CRT display or a liquid crystal display, and a communication unit 27 that performs communication such as wireless communication using a PHS card. It has.
[0030]
The analyzer 20 configured as described above reads the electrocardiogram data stored in the memory card by inserting the memory card storing the electrocardiogram data in the external storage unit 15 of the portable electrocardiograph 10 into the external storage unit 24. . In addition, when the electrocardiogram data stored in the internal storage unit 14 of the portable electrocardiograph 10 is transmitted by the communication unit 16, the transmitted electrocardiogram data is received by the communication unit 27, and is stored in the internal storage unit 23. You can also remember.
[0031]
The analyzer 20 reads the electrocardiogram data stored in the memory card of the external storage unit 24 or the internal storage unit 23, displays the electrocardiogram waveform on the display unit 26 as shown in FIG. The peak of is detected and displayed. Then, the RR interval is obtained from the detected peak of the R wave, and the accumulated data of the RR interval is graphed as shown in FIG. In the graph of FIG. 4B, the horizontal axis represents time, and the vertical axis represents RR intervals. By performing such a process of displaying the graph of FIG. 4B based on the electrocardiogram data transmitted from the portable electrocardiograph 10 in real time, the graph of FIG. Since the magnitude of the RR interval can be instantaneously confirmed from the graph, the movement of the patient's heart, such as whether or not an arrhythmia has occurred, can be recognized in real time. Thus, when an arrhythmia occurs, treatment for the patient can be performed more quickly. Also, the graph of FIG. 4B shows the threshold value of the maximum value and the minimum value of the RR interval set in advance, so that the size of the RR interval can be more clearly confirmed. be able to.
[0032]
Also, a designation of a desired time range in the graph shown in FIG. 4B by an operator's input at the input unit 25 is accepted, and an average and a standard deviation of the RR intervals in the designated range are obtained. By accepting designation of a plurality of time ranges in the input unit 25, the average and standard deviation of the R-R intervals in the designated plurality of ranges are obtained, and are graphed as shown in FIG. 26. In the graph of FIG. 4C, the designated range number is plotted on the horizontal axis, and the average of the RR interval is plotted on the vertical axis. The average and standard deviation of the RR interval for each designated range number are shown with a straight line representing the magnitude of the deviation. By displaying on the display unit 26 in this manner, the difference between the averages of the RR intervals can be instantaneously compared, and the comparison with the past data can be easily performed.
[0033]
【The invention's effect】
According to the first aspect, by providing the switch and the notifying means for notifying wirelessly in response to the operation of the switch, when an emergency such as arrhythmia to be notified occurs, the patient simply operates the switch. The emergency contact can be notified of the occurrence of an emergency, so even if there is no communication means such as a telephone near the patient, it is possible to immediately notify the patient. Action can be taken.
[0034]
According to the second aspect, by providing means for determining whether or not a situation to be reported has occurred based on the stored electrocardiogram data, whether an emergency such as arrhythmia has actually occurred to the patient, or Thus, it is possible to determine whether or not the switch has been operated, so that it is possible to prevent a report due to an erroneous operation of the switch, thereby improving the reliability of the report.
[0035]
According to the third invention, the portable electrocardiograph is further provided with output means for outputting information for requesting confirmation of whether or not to notify when it is determined that a situation to be reported has not occurred. If the patient carrying the information notices that the information has been output, and if there is a situation in which it is necessary to actually report instead of erroneous operation, the patient operates the switch again, and the portable electrocardiograph reports I do. With this, even when the portable electrocardiograph determines that a situation that should be reported has not occurred, the patient can operate the switch and report when the patient feels any subjective symptoms. Can be performed quickly.
[0036]
According to the fourth aspect, by providing the acceleration measurement unit, the electrocardiogram data and the acceleration data stored in the portable electrocardiograph are compared with each other, whereby the movement of the patient's heart and the operation performed by the patient are performed. Can be correlated with the load imposed on the patient, so that a doctor or the like can make a more reliable diagnosis on the patient based on the correlation.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a portable electrocardiograph according to the present invention.
FIG. 2 is a flowchart showing a processing procedure of a control unit of the portable electrocardiograph according to the present invention.
FIG. 3 is a block diagram showing a configuration of an analyzer for analyzing electrocardiogram data.
FIG. 4 is an explanatory diagram showing electrocardiogram data displayed on the analyzer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Portable electrocardiograph 11 Control part 12 Electrocardiogram measurement part 13 Acceleration measurement part 14 Internal storage part 16 Communication part 17 Emergency call switch 18 Lamp

Claims (3)

In a portable electrocardiograph for measuring and storing electrocardiogram data, a switch, a notifying device for notifying wirelessly in response to operation of the switch, and a notification based on the stored electrocardiogram data when the switch is operated Determining means for determining whether a situation to be performed has occurred, and when the determining means determines that a situation to be reported has occurred, the reporting means is adapted to report wirelessly. Portable electrocardiograph. When it is determined that the situation to be notified by the determination means has not occurred, further comprising an output means for outputting information requesting confirmation of whether to report, after outputting by the output means, The portable electrocardiograph according to claim 1 , wherein when the switch is operated again, the notification unit is configured to report wirelessly . The portable electrocardiograph according to claim 1, further comprising an acceleration measuring unit that measures acceleration data .

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