JP7209927B2 - holter monitor - Google Patents

Description

The technology disclosed herein relates to a Holter electrocardiograph.

For example, Patent Literature 1 discloses a Holter electrocardiograph used to measure an electrocardiogram waveform. Such a Holter electrocardiograph is equipped with electrodes, and the electrodes must be attached to appropriate positions on the surface of the living body during measurement. By attaching electrodes to appropriate positions, the electrodes acquire electrical signals from the living body, and electrocardiogram waveforms are obtained from these electrical signals. When attaching the electrodes, the positions of the electrodes are moved while confirming the electrocardiogram waveform displayed on the display unit of the Holter electrocardiograph or the electrocardiogram waveform transmitted to the external device. After finding the position of the electrode where the electrocardiogram waveform can be sufficiently acquired, the electrode is fixed at that position and the measurement is started.

JP 2019-088643 A

The Holter electrocardiograph disclosed in Patent Document 1 determines appropriate positions for attaching the electrodes while confirming the electrocardiogram waveform. For this reason, only a person who has the knowledge to read electrocardiogram waveforms can attach the electrodes to appropriate positions on the living body.

The present specification discloses a technique for easily attaching a Holter electrocardiograph to an appropriate position when attaching the electrocardiograph to a subject.

The Holter electrocardiograph disclosed in the present specification includes electrodes that acquire electrical signals from a living body, and a reporting unit that reports whether or not the positions of the electrodes are appropriate based on the electrical signals acquired by the electrodes. Prepare.

In the above-described Holter electrocardiograph, the notifying unit notifies whether or not the positions of the electrodes are appropriate, so there is no need to read the electrocardiogram waveform when attaching the electrodes. Therefore, even without knowledge of reading electrocardiogram waveforms, the electrodes can be easily attached to appropriate positions.

1 is a front view showing a schematic configuration of a Holter electrocardiograph according to an embodiment; FIG. 1 is a rear view showing a schematic configuration of a Holter electrocardiograph according to an embodiment; FIG. FIG. 2 is a block diagram showing the control system of the Holter electrocardiograph according to the embodiment; 4 is a flowchart showing an example of processing for starting measurement of an electrical signal by the Holter electrocardiograph according to the embodiment;

The main features of the embodiments described below are listed. It should be noted that the technical elements described below are independent technical elements, and exhibit technical usefulness alone or in various combinations, and are limited to the combinations described in the claims as filed. not a thing

(Feature 1) In the Holter electrocardiograph disclosed in this specification, the reporting unit may be a display that displays the magnitude of the electrical signal acquired by the electrodes. With such a configuration, it is possible to easily and visually grasp the appropriate positions of the electrodes.

(Feature 2) In the Holter electrocardiograph disclosed in the present specification, the notification unit notifies in the first mode when the magnitude of the electrical signal is equal to or greater than the first threshold, and the magnitude of the electrical signal is the first may be notified in a second manner different from the first manner when the threshold is smaller than. With such a configuration, the examiner can easily ascertain whether the electrodes are in proper positions.

(Feature 3) In the Holter electrocardiograph disclosed in this specification, the notification unit notifies in the second mode when the magnitude of the electrical signal is equal to or smaller than the second threshold smaller than the first threshold, and the electrical signal When the magnitude is smaller than the first threshold and larger than the second threshold, the notification may be made in a third mode. According to such a configuration, since the types of modes to be reported by the reporting unit are increased, it becomes possible to flexibly respond to situations when attaching the electrodes. For example, although it is difficult to find the position of the electrode where the magnitude is greater than or equal to the first threshold, it may be possible to measure by attaching the electrode to the position where the magnitude is greater than or equal to the second threshold. Such cases can be flexibly dealt with. In addition, since it is possible to determine the relationship between the direction in which the position of the electrode is changed and the direction in which the magnitude of the electrical signal changes, it becomes easier to find an appropriate position for attaching the electrode.

(Feature 4) The Holter electrocardiograph disclosed in this specification may further include a main body that houses the reporting unit, and an adhesive sheet provided on the surface of the main body facing the living body. The adhesive sheet is arranged on the surface of the electrode, and includes a first adhesive section that fixes the surface of the electrode to the surface of the living body, a first peeling tape that covers the surface of the first adhesive section, and a main body that fixes the body to the surface of the living body. A second adhesive portion and a second peeling tape covering the surface of the second adhesive portion may be provided. When the surface of the first adhesive part is covered with the first peeling tape, the first adhesive part may not adhere to the surface of the living body, and the surface of the second adhesive part is covered with the second peeling tape. If so, the first adhesive portion may be non-adherable to the surface of the living body. The first peeling tape and the second peeling tape may be independently separable from the first adhesive part and the second adhesive part. According to such a configuration, the first adhesive portion for fixing the electrodes and the second adhesive portion for fixing the main body can be separately adhered to the living body, so that only the first adhesive portion can be attached. It is possible to find the position to attach the electrode while it is fixed to the living body. Therefore, even if the adhesive force of the first adhesive portion is reduced when the electrode is re-attached to the living body many times, the adhesive force of the second adhesive portion is not reduced. Therefore, even if it is difficult to find an appropriate position to attach the electrodes (for example, if the first adhesive part is reapplied to the living body many times), the main body of the Holter electrocardiograph can be reliably attached to the living body. Can be fixed to the surface. In addition, since the position where the electrode is attached can be adjusted using the first adhesive portion, the area of the surface of the living body to which the first adhesive portion is reattached is reduced. Therefore, it is possible to reduce discomfort (eg, itching) on the surface of the living body caused by re-adhering the adhesive portion.

The Holter electrocardiograph 10 according to the embodiment will be described below. The Holter electrocardiograph 10 is attached to the body surface of a subject near the heart and measures electrical signals for generating an electrocardiogram waveform of the subject. Hereinafter, in the Holter electrocardiograph 10, when the Holter electrocardiograph 10 is attached to the body surface of the subject, the surface facing the body surface is referred to as the back surface, and the opposite surface (that is, the surface exposed when worn) is referred to as the back surface. surface) is sometimes referred to as a surface. Further, the Holter electrocardiograph 10 can be worn by a medical worker such as a doctor or the subject himself/herself. Hereinafter, a person who wears the Holter electrocardiograph 10 on the body surface of the subject (such as a medical worker or the subject himself/herself) may be referred to as a wearer.

As shown in FIGS. 1 and 2, the Holter electrocardiograph 10 includes a main body 12, electrodes 30, connecting portions 32, an adhesive sheet 40, and a peeling tape .

First, the configuration of the main body 12 will be described. As shown in FIGS. 1-3, the main body 12 includes a display 14, a switch 16, a buzzer 18, an amplifier 20, an acceleration sensor 22, a memory 24, and a controller 26. FIG.

The indicator 14 is arranged on the surface side of the main body 12 . The display 14 is configured to display the magnitude of the acquired electrical signal in a visually recognizable manner according to the magnitude of the electrical signal acquired from the electrode 30 . Specifically, the display device 14 includes a plurality of (eight in this embodiment) LED lamps 14a to 14h arranged in a straight line. It is configured to light up according to the size of the That is, the indicator 14 is a level meter that displays the magnitude of the electric signal by means of LED lamps 14a-14h.

The LED lamp 14a is arranged so as to be positioned at the lowest position when the Holter electrocardiograph 10 is worn on the body surface. The LED lamp 14b is positioned above the LED lamp 14a, and the LED lamps 14c to 14h are also arranged side by side so as to be positioned above. As the magnitude of the acquired electric signal increases, the number of LED lamps 14a to 14h that are lit increases. Specifically, as the acquired electric signal increases, the number of LED lamps 14a to 14h that are lit increases in the order of LED lamps 14a, 14b, 14c, . . . , 14h. The arrangement positions of the plurality of LED lamps 14a to 14h are not particularly limited, and can be appropriately set to positions visible to the wearer. Also, the LED lamp positioned highest may be lit when the magnitude of the acquired electric signal is the smallest. Also, a plurality of LED lamps may be arranged side by side.

Further, among the eight LED lamps 14a to 14h, the LED lamp 14a that lights when the acquired electric signal is the smallest is the one whose magnitude of the acquired electric signal is equal to or lower than a predetermined threshold (hereinafter also referred to as threshold A). sometimes lights up. For example, in this embodiment, the LED lamp 14a lights up when the magnitude of the acquired electrical signal is 0.5 mV or less. Also, in this embodiment, the LED lamp 14a lights up in red. When the magnitude of the acquired electrical signal is 0.5 mV or less, the electrocardiogram waveform generated from the acquired electronic signal also becomes small, and an electrocardiogram waveform having an appropriate magnitude cannot be generated. In this case, by lighting only the LED lamp 14a in red, the wearer is notified that the magnitude of the electrical signal to be acquired is too small. This allows the wearer to visually recognize that the position of wearing the Holter electrocardiograph 10 is not appropriate.

Further, among the eight LED lamps 14a to 14h, the three LED lamps 14f to 14h, which are arranged apart from the LED lamp 14a and are lit when the obtained electric signal is large, is a predetermined threshold (hereinafter also referred to as threshold B) that is greater than threshold A. For example, in this embodiment, the LED lamp 14f lights up when the magnitude of the acquired electrical signal is 1.0 mV or more, and the LED lamp 14g lights up when the magnitude of the acquired electrical signal is 1.1 mV or greater. The LED lamp 14h lights up when the magnitude of the acquired electric signal is 1.2 mV or more. Further, the LED lamps 14f to 14h are lit in a color different from that of the red LED lamp 14a, and in this embodiment, the LED lamps 14f to 14h are lit in blue. When the magnitude of the electrical signal to be acquired is 1.0 mV or more, an electrocardiogram waveform having an appropriate magnitude can be generated from the acquired electrical signal. In this case, by lighting at least one of the LED lamps 14f to 14h in blue, the wearer is notified that the magnitude of the electric signal to be acquired is sufficiently large. This allows the wearer to visually recognize that the position of wearing the Holter electrocardiograph 10 is appropriate.

Furthermore, among the eight LED lamps 14a to 14h, the four LED lamps 14b to 14e arranged between the LED lamp 14a and the LED lamps 14f to 14h have the magnitude of the acquired electrical signal greater than the threshold A. Lights up when large. For example, in this embodiment, the LED lamp 14b is turned on when the magnitude of the acquired electric signal is 0.6 mV or more, and the LED lamp 14c is turned on when the magnitude of the acquired electric signal is 0.7 mV or more. The LED lamp 14d lights up when the magnitude of the acquired electric signal is 0.8 mV or more, and the LED lamp 14e lights up when the magnitude of the acquired electric signal is 0.9 mV or more. Since the LED lamp 14f lights up when the magnitude of the acquired electrical signal is equal to or greater than the threshold B, when the magnitude of the acquired electrical signal is greater than the threshold A and smaller than the threshold B, the LED lamp 14a Then, one of the LED lamps 14b to 14e lights up. Therefore, the LED lamps 14b to 14e are lit even when the magnitude of the acquired electric signal is equal to or greater than the threshold value B, but when the LED lamps 14f to 14h are not lit, the magnitude of the acquired electric signal is greater than the threshold value A. It can be said that the light is turned on when it is large and smaller than the threshold value B. For example, in this embodiment, the LED lamps 14b-14e can be said to light up when the magnitude of the acquired electrical signal is greater than 0.5 mV and less than 1.0 mV.

Also, the LED lamps 14b to 14e are lit in a color different from that of the red LED lamp 14a and the blue LED lamps 14f to 14h. In this embodiment, the LED lamps 14b to 14e are green. When the magnitude of the acquired electrical signal is greater than 0.5 mV and smaller than 1.0 mV, the acquired electrical signal is not sufficiently large, but is large enough to be analyzed from the acquired electrical signal. can generate an electrocardiogram waveform having a In this case, by lighting at least one of the LED lamps 14b to 14e in green, the wearer is notified that the magnitude of the electrical signal to be acquired is relatively large, although not optimal. This allows the wearer to visually recognize that the position of wearing the Holter electrocardiograph 10 is not optimal, but not inappropriate. Therefore, when the green LED lamps 14b to 14e are lit, but the blue LED lamps 14f to 14h are not lit, the wearer should, if possible, turn on the blue LED lamps 14f to 14h. The position of the Holter electrocardiograph 10 is moved until At this time, the larger the electrical signal to be acquired, the more LED lamps 14b to 14e are lit, so the wearer can determine in which direction the Holter electrocardiograph 10 should be moved. can. On the other hand, if the positions where the blue LED lamps 14f to 14h are lit cannot be found no matter how many times the position of the electrode 30 is moved, at least one of the red LED lamp 14a and the green LED lamps 14b to 14e is lit. The Holter electrocardiograph 10 may be fixed at a position where

In this embodiment, the wearer is informed whether or not the placement position of the electrode 30 is appropriate based on the color and the number of LED lamps 14a to 14h of the indicator 14. FIG. In other words, the display 14 of the present embodiment does not display the electrical signal using the time axis like the electrocardiogram waveform, but displays the magnitude of the acquired electrical signal and the electrode 30 display. is configured to display whether or not the position of is appropriate. For example, when the wearer determines whether or not the electrode positions are appropriate from the electrocardiogram waveform, the wearer must have the knowledge to read the electrocardiogram waveform. The Holter electrocardiograph 10 of the present embodiment displays whether or not the positions of the electrodes 30 are appropriate without using an electrocardiogram waveform including a time axis. The Holter electrocardiograph 10 can be attached to an appropriate position on the body surface of the subject even if it is not attached.

Further, in this embodiment, it is not necessary to check the electrocardiogram waveform when the Holter electrocardiograph 10 is attached to the body surface of the subject. Therefore, when an electrocardiogram waveform is displayed on the main body 12 of the Holter electrocardiograph 10 or when the Holter electrocardiograph 10 is attached to the body surface of the subject, the acquired electrical signal is transmitted from the Holter electrocardiograph 10 to an external device. There is no need to send to and display the ECG waveform on an external device. In this way, since a configuration for displaying an electrocardiogram waveform is not required during measurement, the cost for manufacturing the Holter electrocardiograph 10 can be reduced.

A switch 16 is arranged on the surface of the body 12 . The Holter electrocardiograph 10 is activated by pressing the switch 16 in the first manner (eg, pressing and holding for a predetermined time period (eg, 5 seconds)). Further, by pressing the switch 16 in the second mode (for example, pressing and holding for a predetermined time (for example, 2 seconds)) while the Holter electrocardiograph 10 is activated, measurement of the electrocardiographic waveform is started and acquired. The electrical signals of the living body are stored in the memory 24 over time. Further, by pressing the switch in the third mode (for example, pressing it once) after starting the measurement of the electrocardiographic waveform, the memory 24 stores the flag together with the electrical signal of the living body. For example, when an abnormality (for example, chest pain, dizziness, etc.) occurs in the subject, the subject himself/herself presses the switch 24 in the third mode. As a result, it is possible to record with a flag that some abnormality has occurred in the subject. When outputting the measured electrical signal from the memory 24 to another PC (not shown), a flag is also output together with the electrical signal. Other PCs can calculate the standard time at the start of measurement (time based on standard time) based on the measurement time from the start of measurement. Specifically, the other PC calculates the time between the timing of starting the measurement and the timing of acquiring the electrical signal (that is, the measurement time). Next, the other PCs calculate back the measurement time from the standard time at which the electrical signal was input based on the standard time held by the other PC. This allows other PCs to calculate the standard time at the start of measurement. As a result, even if the Holter electrocardiograph 10 does not have information about the standard time, other PCs can identify the standard time at the start of measurement. Similarly, other PCs can identify the flagged standard time based on the time from the measurement start timing to the flagged timing.

A buzzer 18 is arranged on the main body 12 and notifies the wearer that the Holter electrocardiograph 10 has been operated. For example, when the switch 16 is pressed, the buzzer 18 notifies the wearer of activation of the Holter electrocardiograph 10, start of measurement, and the like. Further, the buzzer 18 may inform the subject when a problem occurs in the Holter electrocardiograph 10 during the measurement of the electrical signals of the living body.

Amplifier 20 is positioned between and connected to electrode 30 and controller 26 . The amplifier 20 amplifies the biological electrical signal input from the electrode 30 and outputs the amplified electrical signal to the controller 26 .

The acceleration sensor 22 is a sensor that measures acceleration in three directions of the XYZ axes. The posture of the Holter electrocardiograph 10 is measured by the acceleration sensor 22 . That is, the acceleration sensor 22 measures the posture of the subject wearing the Holter electrocardiograph 10 . This makes it possible to determine whether the subject is in a standing position or a lying position. When the acceleration sensor 22 detects that the subject is in the supine position for more than a predetermined period of time, the light intensity of the LED lamps 14a to 14h of the display 14 is reduced. If the subject remains in the recumbent position for more than a predetermined period of time, it is highly likely that the subject is asleep. can be suppressed. On the other hand, when the acceleration sensor 22 detects that the subject is standing for more than the predetermined time, the light intensity of the LED lamps 14a to 14h of the display 14 is increased. If the subject is in the standing position for more than the predetermined time, there is a high possibility that the subject is active. It can be done easily.

The controller 26 is composed of a microcomputer (microprocessor) including a CPU, ROM, RAM, and the like. Controller 26 is connected to display 14 , switch 16 and buzzer 18 and controls display 14 , switch 16 and buzzer 18 . The controller 26 is also connected to the amplifier 20 and acquires the electrical signal acquired by the electrode 30 and amplified by the amplifier 20 . The electrical signal obtained by the controller 26 is stored in the memory 24 . In addition, the controller 26 is connected to the acceleration sensor 22, determines the posture of the Holter electrocardiograph 10 (that is, the posture of the subject) from the information acquired from the acceleration sensor 22, and accordingly displays the display 14 ( Specifically, the amount of light of the LED lamps 14a to 14h of the display 14 is controlled.

The electrode 30 has an electrode plate made of a conductive material such as silver. By bringing the electrode plate into contact with the subject's body surface (more specifically, through the adhesive sheet 40), the biological electrical signal can be obtained. The electrode 30 is composed of an electrode 30a that is an N electrode, an electrode 30b that is a - electrode, and an electrode 30c that is a + electrode. The electrodes 30a to 30b are arranged so that the electrode plates are located on the back side of the Holter electrocardiograph 10. As shown in FIG. Specifically, the electrode plate is arranged so as to contact the body surface of the subject through the adhesive sheet 40 with the peeling tape 42 peeled off. The electrode 30a is arranged substantially in the center of the main body 12, and the electrode 30b is arranged at the lower end of the main body 12 (more specifically, the lower end when the Holter electrocardiograph 10 is attached to the subject). Electrode 30c is spaced apart from body 12 and positioned below electrodes 30a and 30b. The main body 12 and the electrode 30c are connected by a connecting portion 32. As shown in FIG.

The adhesive sheet 40 is arranged so as to cover substantially the entire back surface of the Holter electrocardiograph 10 . Specifically, the adhesive sheet 40 is arranged to be positioned slightly inside the entire Holter electrocardiograph 10 when the Holter electrocardiograph 10 is viewed from the back side. The adhesive sheet 40 allows the Holter electrocardiograph 10 to be fixed to the body surface of the subject. In this embodiment, the adhesive sheet 40 has a dimension that covers substantially the entire back surface of the Holter electrocardiograph 10, but the configuration is not limited to this. The adhesive sheet only needs to be able to fix the Holter electrocardiograph to the subject's body surface, and may have dimensions smaller than substantially the entire back surface of the Holter electrocardiograph. The adhesive sheet 40 is made of a conductive material. Therefore, the electrode 30 acquires the electrical signal of the living body via the adhesive sheet 40 .

The release tape 42 has substantially the same shape as the adhesive sheet 40 and is arranged so as to cover the entire adhesive sheet 40 . The peeling tape 42 has a first portion 44 provided around the electrode 30 and its periphery, and a second portion 46 provided at a position other than the first portion 44 . In this embodiment, the Holter electrocardiograph 10 has three electrodes 30a to 30c, so three first portions 44 are also provided at positions corresponding to the three electrodes 30a to 30c, respectively. When the first portion 44 is peeled off, only the electrodes 30a to 30c and the adhesive sheet 40 around them are exposed. By peeling off only the first portion 44 without peeling off the second portion 46, it is possible to fix only the electrodes 30a to 30c without fixing the entire Holter electrocardiograph 10 to the body surface of the subject. can. That is, only the electrodes 30a to 30c can be temporarily fixed before fixing the Holter electrocardiograph 10 to the surface of the living body. As a result, electrical signals of the living body can be acquired from the electrodes 30 before the entire Holter electrocardiograph 10 is fixed to the body surface of the subject. Although the first portion 44 is provided around the electrode 30 in this embodiment, the configuration is not limited to this. The first portion may be configured so that the electrode 30 can be fixed to the body surface of the subject, and may be provided only on a part of the electrode 30, or may be provided at a position corresponding to the electrode 30. good. The first part 44 is an example of a "first peeling tape", and the adhesive sheet 40 at a position corresponding to the first part 44 is an example of a "first adhesive portion".

The second portion 46 occupies a relatively large area of the entire release tape 42 . Therefore, by peeling off the second portion 46, a relatively large area of the adhesive sheet 40 is exposed, and the Holter electrocardiograph 10 can be fixed to the body surface of the subject. The second portion 46 is an example of a "second peeling tape", and the adhesive sheet 40 at a position corresponding to the second portion 46 is an example of a "second adhesive portion".

Since the appropriate placement position of the electrode 30 differs from subject to subject, the wearer may search for the appropriate placement position of the electrode 30 by moving the position of the electrode 30 many times. If the arrangement position of the electrode 30 is moved after peeling off the entire peeling tape 42, the adhesive sheet 40 will be stuck and peeled off many times, and the adhesive strength of the entire adhesive sheet 40 may decrease. Since the peeling tape 42 is configured so that the first portion 44 and the second portion 46 can be peeled off separately, when searching for an appropriate placement position for the electrode 30, only the first portion 44 provided on the electrode 30 is required. can be removed, and the electrode 30 can be fixed (temporarily fixed) without removing the second portion 46 . Therefore, the adhesive strength of the adhesive sheet 40 corresponding to the second portion 46 that occupies a relatively large area on the back surface of the Holter electrocardiograph 10 does not decrease until the wearer determines the placement positions of the electrodes 30 . Therefore, even if the positions of the electrodes 30 are moved many times, the Holter electrocardiograph 10 can be reliably fixed to the body surface of the subject. Moreover, even if the adhesive sheet 40 is reapplied multiple times to adjust the position of the electrode 30, the surface area to which the adhesive sheet 40 is attached is reduced, so that the subject's discomfort can be reduced.

Next, processing for starting measurement of electrical signals by the Holter electrocardiograph 10 of the present embodiment will be described. When starting measurement with the Holter electrocardiograph 10, first, the Holter electrocardiograph 10 needs to be attached to an appropriate position on the surface of the living body so that an electrical signal of sufficient magnitude can be obtained from the electrodes 30. There is An appropriate mounting position of the Holter electrocardiograph 10 differs from subject to subject. Below, the process from starting the Holter electrocardiograph 10 to mounting the Holter electrocardiograph 10 in an appropriate mounting position and starting measurement will be described.

Activation of the Holter monitor 10 is performed by the wearer pressing the switch 16 in a first manner (for example, pressing and holding). When the Holter electrocardiograph 10 is activated, first, as shown in FIG. 4, the controller 26 determines whether or not the electrical signal acquired by the electrodes 30 is input via the amplifier 20 (S12). When the electrode 30 is placed on the body surface of the subject, the electrode 30 acquires electrical signals from the living body. If no electrical signal is input to the controller 26 (NO in step S12), it is determined that the electrodes 30 are not placed on the surface of the living body. Therefore, the process returns to step S12 and waits until an electric signal is input (that is, until the electrodes 30 are placed on the body surface of the subject).

Here, a procedure for the wearer to place the electrodes 30 on the body surface of the subject will be described. After activating the Holter electrocardiograph 10, the wearer peels off the first portions 44 of the peeling tape 42 (specifically, the three first portions 44 arranged at positions corresponding to the electrodes 30a to 30c). At this time, the second portion 46 is not peeled off and remains adhered to the adhesive sheet 40 . Then, only the three electrodes 30a to 30c and the adhesive sheet 40 around them are exposed. Next, the wearer presses the back surface of the Holter electrocardiograph 10 against the body surface of the subject. As a result, the three electrodes 30a to 30c come into contact with the subject's body surface via the adhesive sheet 40. FIG. In this state, since the second portion 46 that occupies most of the peeling tape 42 is not peeled off, the whole Holter electrocardiograph 10 cannot be firmly fixed to the body surface of the subject. Therefore, the wearer may press the Holter electrocardiograph 10 against the body surface to support the Holter electrocardiograph 10 . In such a state, the electrodes 30 acquire electrical signals from the living body, and the electrical signals acquired by the electrodes 30 are amplified through the amplifier 20 and input to the controller 26 .

When the electric signal is input to the controller 26 (YES in step S12), the controller 26 analyzes the obtained electric signal (S14). Then, the controller 26 detects the magnitude of the electric signal obtained based on the analysis result, and lights the LED lamps 14a to 14h of the display 14 according to the magnitude of the electric signal (S16). By checking the LED lamps 14a to 14h, the wearer can visually ascertain whether or not the arrangement positions of the electrodes 30 are appropriate.

For example, when the red LED lamp 14a and the green LED lamps 14b to 14e are lit and at least one of the blue LED lamps 14f to 14h is lit, the electrode 30 placed at that position emits a sufficient amount of light. A large electronic signal can be obtained. That is, the electrodes 30 are arranged at appropriate positions. In this case, the wearer determines the position of the electrode 30 at this time as the placement position of the electrode 30 and fixes the Holter electrocardiograph 10 . Specifically, the second portion 46 of the peeling tape 42 is peeled off, and the Holter electrocardiograph 10 is fixed at that position. After that, the wearer presses the switch 16 in the second manner (eg, presses once) to start the measurement.

After the LED lamps 14a to 14h are turned on in step S16, the controller 26 determines whether the switch 16 has been pressed (S18). When the switch 16 is pressed (YES in step S18), the controller 26 causes the memory 24 to store the acquired electric signal over time (S20). As a result, the process of starting the measurement of the electrical signal by the Holter electrocardiograph 10 ends. After that, the Holter electrocardiograph 10 continues the measurement until an instruction to end the measurement is input from the switch 16 .

On the other hand, when only the red LED lamp 14a is lit and the green LED lamps 14b-14e and the blue LED lamps 14f-14h are not lit, an electronic signal of sufficient magnitude from the electrode 30 placed at that position can't get That is, the electrode 30 is positioned improperly. In this case, the wearer changes the position of the electrodes 30 . As described above, after the LED lamps 14a to 14h are turned on in step S16, the controller 26 executes the process of determining whether the switch 16 has been pressed (process of step S18). Since the switch 16 is not pressed when the wearer changes the position of the electrode 30, the controller 26 does not acquire the information that the switch 16 has been pressed (NO in step S18). In this case, the process returns to step S12, and the processes of steps S12 to S18 are repeated. That is, the controller 26 acquires electrical signals from the electrodes 30 whose placement positions have been changed by the wearer, and relights the LED lamps 14a to 14h of the indicator 14 according to the magnitude of the acquired electrical signals. Thereby, the wearer can grasp the magnitude of the electric signal of the electrode 30 at the changed position from the LED lamps 14a to 14h. While confirming the LED lamps 14a to 14h, the wearer changes the electrode 30 arrangement position until at least one blue LED lamp 14f to 14h lights up. This allows the wearer to find the proper position to place the electrodes 30 . It should be noted that if the wearer cannot find the arrangement position of the electrode 30 that lights up the blue LED lamps 14f to 14h no matter how many times the arrangement position of the electrode 30 is changed, at least one green LED lamp 14b 14e may be determined as the arrangement position of the electrode 30. FIG.

After determining the placement positions of the electrodes 30 , the wearer peels off the second portion 46 of the peeling tape 42 to fix the Holter electrocardiograph 10 . After that, the wearer presses the switch 16 in the second manner (eg, presses once) to start the measurement. Thereby, the controller 26 acquires the information that the switch 16 has been pressed (YES in step S18), and starts measuring the electric signal (S20).

Although the indicator 14 of this embodiment includes the LED lamps 14a to 14h, the configuration is not limited to this. The display mode of the display is not particularly limited as long as the display can notify whether or not the arrangement positions of the electrodes 30 are appropriate. For example, the indicator may indicate whether or not the placement position of the electrode 30 is appropriate by displaying characters or the like. Specifically, the controller 26 determines whether or not the positions of the electrodes are appropriate for measurement based on the acquired electrical signals, and information on whether or not the positions of the electrodes are appropriate based on the determination results. may be displayed on the display by characters or the like. Further, the Holter electrocardiograph 10 of the present embodiment uses the display 14 to indicate whether or not the placement positions of the electrodes 30 are appropriate, but the present invention is not limited to such a configuration. For example, instead of the display device, the Holter electrocardiograph may include a notification unit such as a speaker that notifies whether or not the placement positions of the electrodes 30 are appropriate by voice or the like. Specifically, the controller 26 determines whether or not the positions of the electrodes are appropriate for measurement based on the acquired electrical signals, and information on whether or not the positions of the electrodes are appropriate based on the determination results. may be notified by voice or the like.

Although specific examples of the technology disclosed in this specification have been described above in detail, these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. In addition, the technical elements described in this specification or in the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing.

10: Holter electrocardiograph 12: Main body 14: Indicator 16: Switch 26: Controller 30: Electrode 40: Adhesive sheet 42: Release tape 44: First part 46: Second part

Claims (5)

an electrode for acquiring electrical signals from a living body;
a notification unit that notifies whether or not the position of the electrode is appropriate based on the electrical signal obtained by the electrode;
a determining unit that determines whether or not the position of the electrode is appropriate based on the electrical signal obtained by the electrode;
an input unit capable of inputting an instruction to store the electrical signal acquired by the electrode over time;
a memory for temporally storing the electrical signal obtained by the electrode when the instruction is input to the input unit;
a main body that accommodates the notification unit;
an adhesive sheet provided on the surface of the main body facing the living body ,
The adhesive sheet is
a first adhesive portion disposed on the surface of the electrode and fixing the surface of the electrode to the surface of a living body;
a first peeling tape covering the surface of the first adhesive portion;
a second adhesive part for fixing the main body to the surface of the living body;
a second peeling tape covering the surface of the second adhesive portion,
When the surface of the first adhesive portion is covered with the first peeling tape, the first adhesive portion cannot adhere to the surface of the living body,
When the surface of the second adhesive part is covered with the second peeling tape, the second adhesive part cannot adhere to the surface of the living body,
The first peeling tape and the second peeling tape are independently separable from the first adhesive portion and the second adhesive portion,
The Holter electrocardiograph, wherein the determination unit repeats the determination process until the instruction is input to the input unit . 2. The Holter electrocardiograph according to claim 1, wherein said reporting unit is a display that displays the magnitude of said electrical signal acquired by said electrodes. The notification unit is
Notifying in a first mode when the magnitude of the electrical signal is equal to or greater than a first threshold,
3. The Holter electrocardiograph according to claim 1, wherein when the magnitude of said electrical signal is smaller than said first threshold, notification is given in a second manner different from said first manner. The notification unit is
Notifying in the second mode when the magnitude of the electrical signal is equal to or less than a second threshold smaller than the first threshold,
4. The Holter electrocardiograph according to claim 3, wherein when the magnitude of said electrical signal is less than said first threshold and greater than said second threshold, notification is given in a third mode. The notification unit is configured to display the magnitude of the electrical signal obtained by the electrode in a visually recognizable manner,
The Holter electrocardiograph according to any one of claims 1 to 4, wherein said notification unit displays the result determined by said determination unit in a different color depending on the determination result .

Images