Biological information recording device

Abstract

To provide a biological information recording device that makes contents of display of recording data on biological information easy to check for a user.SOLUTION: A portable biological information recording device that can record recording data equipped with a display unit for displaying display data of recording data based on biological information on a subject includes: a recording data generation unit for generating recording data on the basis of biological information acquired from a mounting unit mounted on the subject; and a display data generation unit for generating display data corresponding to display specifications of the display unit on the basis of the recording data generated by the recording data generation unit.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a biological information recording device.

Background Art

[0002] Conventionally, portable biological information recording devices such as Holter electrocardiogram recorders have been known (see, for example, Patent Document 1). Generally, such a biological information recording device is configured to be able to display the biological information in real time while recording the biological information of a subject in order to transfer the biological information to an external device.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in a portable biological information recording device, since analysis and the like of the recorded data of biological information are performed by an external device, it is preferable to generate the recorded data at a relatively high sampling frequency.

[0005] However, when generating recorded data at a high sampling frequency, noise is likely to be mixed into the recorded data. Therefore, when displaying the recorded data on a relatively small display unit in a portable biological information recording device, due to the noise, it becomes difficult for the user to confirm the display content.

[0006] An object of the present invention is to provide a biological information recording device capable of making the display content of recorded data related to biological information easy for a user to confirm.

Means for Solving the Problems

[0007] The biological information recording device according to the present invention is a portable biological information recording device equipped with a display unit for displaying display data based on the biological information of the subject, and capable of recording the recording data, a recording data generation unit that generates the recording data based on the biological information acquired from a wearing unit worn by the subject, a display data generation unit that generates the display data corresponding to the display specification of the display unit based on the recording data generated by the recording data generation unit, recording of the recording data Operation state a determination unit that determines and 、 The display data generation unit generates the display data according to the determination result of the determination unit .

Advantages of the Invention

[0008] According to the present invention, the display content of the recording data related to biological information can be made easy for the user to confirm.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 4

Figure 5

Embodiments for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a biological information recording device 1 according to an embodiment of the present invention. FIG. 2 is a block diagram of the biological information recording device 1 according to the present embodiment.

[0011] As shown in FIG. 1, the biological information recording device 1 is a portable biological information recording device such as a Holter electrocardiogram recorder, and is used to record time-series data related to the biological information of a subject (for example, information of a 12-lead electrocardiogram, etc.). The biological information recording device 1 is configured to be attached to a subject to record biological information, and has a relatively small size such that, for example, the subject can carry out daily life while being attached to the subject.

[0012] As shown in FIG. 2, the biological information recording device 1 includes a biological information input unit 11, a recording data generation unit 12, a recording unit 13, a display data generation unit 14, a display unit 15, and a control unit 16.

[0013] The control unit 16 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), etc. The CPU reads a program corresponding to the processing content from the ROM and expands it into the RAM, and in cooperation with the expanded program, controls the operations of each part of the biological information recording device 1. Note that the recording data generation unit 12 and the display data generation unit 14 are included in the control unit 16. Also, in the above control unit 16, although a ROM is provided, other storage media such as a FRAM (Ferroelectric Random Access Memory: registered trademark) may be provided.

[0014] The biological information input unit 11 acquires the biological information of the subject from the attachment unit 2 attached to the subject, and inputs the biological information to the recording data generation unit 12. The attachment unit 2 is composed of, for example, limb electrodes capable of detecting bipolar limb leads (lead I, lead II, lead III), unipolar limb leads (aVF lead, aVR lead, aVL lead), and chest electrodes capable of detecting chest leads (V1 to V6 leads). Note that the attachment unit 2 may be an attachment other than an electrode.

[0015] The recording data generation unit 12 generates recording data based on the biological information acquired from the wearing unit 2 worn by the subject. Specifically, the recording data generation unit 12 generates, as recording data, time-series data obtained by sampling the biological information acquired each time at a first sampling frequency.

[0016] The recording data generation unit 12 is configured to be able to set, for example, three types of first sampling frequencies of 125 Hz, 250 Hz, and 1000 Hz within a range from 125 Hz to 1000 Hz.

[0017] The recording unit 13 is, for example, a recording device detachable from the biological information recording device 1, and records the recording data generated by the recording data generation unit 12 under the control of the control unit 16 while being attached to the biological information recording device 1. The recording data recorded by the recording unit 13 is delivered to the external device 3, for example, by removing the recording unit 13 from the biological information recording device 1 and attaching the recording unit 13 to the external device 3.

[0018] Note that the recording data of the recording unit 13 may be delivered to the external device 3 via the output interface or the like of the biological information recording device 1. Also, the recording unit 13 may be built in the biological information recording device 1. In this case, the recording data is delivered to the external device 3 via the output interface or the like of the biological information recording device 1.

[0019] The external device 3 is, for example, a biological information analysis device (electronic device) such as an electrocardiogram analysis device, and analyzes the biological information related to the recording data based on the recording data delivered from the biological information recording device 1. The external device 3 may be any device as long as it can analyze biological information, such as a personal computer, a mobile terminal, or the like.

[0020] The display data generation unit 14 acquires the recording data generated by the recording data generation unit 12, and generates display data corresponding to the display specification of the display unit 15 based on the recording data. Specifically, the display data generation unit 14 generates display data by converting the recording data to a second sampling frequency.

[0021] The second sampling frequency is set to a frequency such that the display data (waveform information) displayed on the display unit 15 is easy for the user to view, and is set to a frequency equal to or lower than the first sampling frequency, for example, 125 Hz.

[0022] The display unit 15 is provided on the surface of the housing constituting the portable biological information recording device 1 (see FIG. 1), and displays the display data generated by the display data generation unit 14 (see FIGS. 3A and 3B). The display unit 15 has a relatively small size corresponding to the size of the portable biological information recording device 1.

[0023] Incidentally, in the portable biological information recording device 1, for the convenience of analyzing the recording data of biological information by the external device 3, it is preferable to generate the recording data at a relatively high sampling frequency. In the present embodiment, for example, it is assumed that the recording data is generated by setting the first sampling frequency to 1000 Hz for analysis by the external device 3.

[0024] In the case of such a small-sized display unit 15, when the recording data generated by being sampled relatively finely at a high sampling frequency is displayed on the time axis corresponding to the sampling frequency, due to the resolution of the display unit 15 and the like, the recording data is displayed with elongation.

[0025] That is, since there is a limit to the number of dots on the time axis in the display unit 15, each piece of recording data is displayed in a state where the width of the time axis (horizontal axis) of the display shown in FIGS. 3A and 3B is narrowed. For example, the range of the portion surrounded by the broken line shown in FIG. 3A is displayed on the display unit 15, and the recording data is displayed so as to scroll from right to left. With such a display, it becomes difficult for the user to check the display content of the recording data at a glance.

[0026] And thus, when generating recording data at a high sampling frequency, since the biological information is sampled finely, noise generated during the measurement of the biological information is likely to be mixed into the recording data. Therefore, when displaying the recording data on the relatively small-sized display unit 15 with a narrowed time axis width in the portable biological information recording device 1, the noise is displayed on the display unit 15, making it difficult for the user to check the display content.

[0027] In the present embodiment, display data obtained by converting the recording data to a second sampling frequency is displayed on the display unit 15. Specifically, since the display data obtained by downsampling the recording data is displayed on the display unit 15, it becomes easier for the user to check a certain degree of time change in the biological information. That is, in the present embodiment, the display content of the recording data related to the biological information can be made easy for the user to check.

[0028] Also, a plurality of types of display data are displayed on the display unit 15. FIGS. 3A and 3B show an example in which six types of display data are displayed. FIG. 3A shows an example in which V1 to V6 leads are displayed, and FIG. 3B shows an example in which I lead, II lead, III lead, aVF lead, aVR lead, and aVL lead are displayed. The display shown in FIG. 3A and the display shown in FIG. 3B are switched by an operation unit (not shown) in the biological information recording device 1.

[0029] In addition, the display unit 15 is configured to be able to switch the number of display contents of the display content data under the control of the control unit 16. Specifically, the display unit 15 is configured to be able to display a maximum of six pieces of display content data.

[0030] The control unit 16 performs control to switch the number of displays to the display unit 15. Specifically, the control unit 16 increases the number of display data during the wearing confirmation of the wearing unit 2 to the subject compared to the number of display data during the recording of biological information. The control unit 16 corresponds to the "switching unit" of the present invention.

[0031] In the biological information recording device 1, as the number of display data increases, the processing inside the device increases, and the power consumption based on the processing also increases. The processing inside the device includes recording of recording data, display of display data, etc. In particular, in the portable biological information recording device 1, since it operates with a mounted battery, the influence degree of the increase in the processing and the increase in power consumption is relatively high. The battery is, for example, built into the device or detachable from the device (for example, dry battery, etc.).

[0032] For example, during the recording of biological information, since the recording of the recording data generated sequentially is performed on the recording unit 13, if the number of display data is kept at the maximum, the power consumption increases and it is likely to affect the remaining amount of the battery.

[0033] On the other hand, in the wearing confirmation of the wearing unit 2 to the subject, if the number of display data is small, the number of times (operation times) the user operates the operation unit to check all types of display data may increase. Also, in the wearing confirmation of the wearing unit 2, since there is no need to record on the recording data, it is possible to increase the number of display data and reduce the number of operation times for checking all types of display data.

[0034] Therefore, in the present embodiment, the number of display data displayed when confirming the attachment of the attachment unit 2 to the subject is made larger than the number of display data displayed when recording biological information. For example, the number of display data displayed when confirming the attachment is set to 6, and the number of display data displayed when recording biological information is set to 3 (see FIG. 4 for example). FIG. 4 shows an example in which V1 to V3 inductions are displayed.

[0035] By doing so, in the attachment confirmation of the attachment unit 2, for example, when the number of displays is set to 3, it is necessary to switch the display 3 times to confirm all 12 types of display data. However, when the number of displays is set to 6, it is only necessary to switch the display once to confirm all 12 types of display data. That is, in the attachment confirmation of the attachment unit 2, by increasing the number of display data displayed, the number of operations for confirming all types of display data can be reduced.

[0036] Also, when recording biological information, for example, by simply reducing the number of displays from 6 to 3, the load on the display can be halved. That is, when recording biological information, by reducing the number of display data displayed, the load during the recording of the recording data in the biological information recording device 1 can be reduced.

[0037] An operation example of the display control in the biological information recording device 1 configured as described above will be described. FIG. 5 is a flowchart showing an operation example of the display control in the biological information recording device 1. The processing in FIG. 5 is appropriately executed, for example, when the power of the biological information recording device 1 is turned on.

[0038] As shown in FIG. 5, the control unit 16 acquires biological information and generates recording data (step S101). Then, the control unit 16 determines whether to start recording the recording data or whether the recording data is being recorded (step S102). Note that when it is determined that the recording of the recording data has started, it means that the recording of the recording data has not started yet, and when it is determined that the recording data is being recorded, it means after the recording of the recording data has started. Also, when the recording of the recording data has not started or is not in the process of recording the recording data, in this flowchart, it is assumed that the display data for confirming the attachment of the attachment unit 2 is generated.

[0039] As a result of the determination, when it is not the case that the recording of the recording data has started or is not in the process of recording the recording data (step S102, NO), the control unit 16 generates display data (step S103) and displays six pieces of display data on the display unit 15 (step S104). After step S104, the process transitions to step S109.

[0040] On the other hand, when the recording of the recording data has started or is in the process of recording the recording data (step S102, YES), the control unit 16 determines whether the display setting of the display unit 15 during the recording of the recording data is ON (step S105).

[0041] As a result of the determination, when the display setting of the display unit 15 during the recording of the recording data is not ON (step S105, NO), the process transitions to step S108. On the other hand, when the display setting during the recording of the recording data is ON (step S105, YES), the control unit 16 generates display data (step S106) and displays three pieces of display data (step S107).

[0042] Next, the control unit 16 records the recording data in the recording unit 13 (step S108) and determines whether the recording of the recording data has ended (step S109). As a result of the determination, when the recording has not ended (step S109, NO), the process returns to step S102. On the other hand, when the recording has ended (step S109, YES), this control ends.

[0043] According to the present embodiment configured as described above, since the display data generation unit 14 generates display data by converting the recording data to the second sampling frequency, the display content of the recording data related to the biological information can be made easy for the user to check.

[0044] In addition, since the control unit 16 increases the number of display data during the wearing confirmation of the wearing unit 2 to the subject compared to the number of display data during the recording of the biological information, in the wearing confirmation of the wearing unit 2, the number of display data is increased, and the number of operation times for checking all types of display data can be reduced. Also, during the recording of the biological information, the number of display data can be reduced to reduce the load during the recording of the recording data in the biological information recording device 1.

[0045] Note that in the above embodiment, the second sampling frequency was set to 125 Hz (a constant value), but the present invention is not limited to this, and it may be set to a frequency other than 125 Hz. Also, the second sampling frequency may be variably set within a certain range (for example, within the range from 125 Hz to 250 Hz).

[0046] In this case, the control unit 16 may control to change the second sampling frequency according to the type of biological information. For example, in the display unit 15, when it is desired to narrow the width of the time axis in the electrocardiogram waveform and more intensively check a specific part (for example, the P wave), the second sampling frequency is set to 250 Hz which is greater than 125 Hz.

[0047] By doing so, the convenience for the user can be improved.

[0048] Also, in the above embodiment, the recording data generation unit 12 and the display data generation unit 14 were operated by the control unit 16, but the present invention is not limited to this, and the recording data generation unit and the display data generation unit may be configured to operate with a separate CPU such as an independent CPU from the control unit.

[0049] In the above embodiment, the control unit 16 constitutes the switching unit. However, the present invention is not limited to this, and a switching unit may be provided separately from the control unit.

[0050] In the above embodiment, the biological information recording device 1 recorded the information of the 12-lead electrocardiogram. However, the present invention is not limited to this. Biological information other than the information of the 12-lead electrocardiogram may be recorded.

[0051] In the above embodiment, the range of the first sampling frequency is set from 125 Hz to 1000 Hz. However, the present invention is not limited to this. For example, when the biological information is information related to an electrocardiograph (such as a pacemaker pulse), the first sampling frequency can be set within the range of 125 Hz to 8000 Hz or within the range of 125 Hz to 32000 Hz. Also, the upper limit of the first sampling frequency is not limited to these and can be a value corresponding to the biological information recording device.

[0052] In the above embodiment, a Holter electrocardiogram recorder is exemplified as the biological information recording device. However, the present invention is not limited to this, and any recorder may be used as long as it is a portable biological information recording device.

[0053] In addition, each of the above embodiments is merely an example of the implementation of the present invention, and the technical scope of the present invention should not be construed in a limited manner by these. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

Industrial Applicability

[0054] The biological information recording device according to the present invention is useful as a biological information recording device that enables a user to easily confirm the display content of the recording data related to the biological information.

Explanation of Reference Numerals

[0055] 1 Biological information recording device 2 Mounting section 3 External device 11 Biological information input section 12 Record data generation section 13 Recording section 14 Display data generation section 15 Display section 16 Control section

Claims

1. A portable biological information recording device including a display unit that displays display data for displaying recording data based on the biological information of a subject, a recording data generation unit that generates the recording data based on biological information acquired from a wearing unit worn by the subject, a display data generation unit that generates the display data corresponding to the display specification of the display unit based on the recording data generated by the recording data generation unit, a determination unit that determines the state of the recording operation of the recording data, comprising: the display data generation unit generates the display data according to the determination result of the determination unit, a biological information recording device.

2. the recording data generation unit generates the recording data at a first sampling frequency, the display data generation unit generates the display data by converting the recording data to a second sampling frequency equal to or lower than the first sampling frequency, The biological information recording device according to claim 1.

3. the first sampling frequency is within the range of 125 Hz to 8000 Hz, the second sampling frequency is within the range of 125 Hz to 250 Hz, The biological information recording device according to claim 2.

4. the display data generation unit changes the second sampling frequency according to the type of the biological information, The biological information recording device according to claim 2 or claim 3.

5. comprising a switching unit capable of switching the number of displays of a plurality of types of display data to the display unit, when the switching unit confirms the wearing of the wearing unit on the subject, the number of displays of the display data is made larger than the number of displays of the display data during the recording of the biological information, The biological information recording device according to any one of claims 1 to 4.

6. comprising an operation unit capable of switching the display of the display unit by the number of operations corresponding to the number of displays, The biological information recording device according to claim 5.

7. when the setting of the display of the display data during the recording of the recording data is ON, the display data is generated and displayed on the display unit, when the setting of the display of the display data during the recording of the recording data is not ON, the recording data is recorded, The biological information recording device according to any one of claims 1 to 6.

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