JP6176945B2 - Biological information monitor - Google Patents

Description

  The present invention relates to a biological information monitor.

  The biological information monitor is a medical device capable of collectively displaying biological information such as heart rate, blood pressure, and respiratory rate measured from a patient in a numerical value or waveform format on a display unit (for example, see Patent Document 1). Such a biological information monitor is generally connected to an electrocardiographic electrode and various biological information measurement sensors, an input device for acquiring biological information from a patient, a display device for displaying the acquired biological information, and A power supply device for driving them is provided.

  In addition, a biological information monitor that has a built-in battery so that it can be used during movement such as patient transportation and can be driven by either a commercial power source or a built-in battery is also known (see, for example, Patent Document 2). . The body of the biological information monitor used for such a patient transport application may be provided with a handle portion that is convenient to carry.

JP 2004-194996 A JP 2010-200896 A

  By the way, since the biological information monitor that can be used for the patient transportation application can be moved and used together with the patient, its use environment changes variously. Depending on changes in the usage environment, the visibility of the screen displayed on the biological information monitor may be reduced. In such a case, for example, when the biological information monitor is equipped with a function for improving the visibility such as contrast adjustment of the display screen, the operator may make adjustments as necessary. However, since such manual work is troublesome for the operator, there is a certain limit to improving the convenience of the biological information monitor.

  The objective of this invention is providing the biometric information monitor which can improve the visibility of display data, without making an operator troublesome.

The biological information monitor of the present invention is
A biological information monitor having a biological information acquisition unit that acquires biological information data of a patient, and a display unit that displays measurement values of the acquired biological information data in real time,
A detection unit for detecting a change in a use environment of the biological information monitor;
A display processing unit that changes the size or typeface of the displayed measurement value according to a change in the use environment of the biological information monitor detected by the detection unit;
I have a,
The detection unit detects a change in the usage environment based on the brightness of external light,
The display processing unit enlarges the character size of the displayed measurement value character or changes the displayed character font of the measurement value to an emphasized typeface when the brightness of external light exceeds a predetermined level. To do .

  According to the present invention, it is possible to improve the visibility of the display data of the biological information monitor without causing the operator to take time.

The front perspective view and back perspective view which show the external appearance of the biological information monitor which concerns on Embodiment 1 of this invention The figure which shows the state which isolate | separated each component of the biological information monitor which concerns on Embodiment 1 of this invention. The figure which shows the bottom face of the carrier which concerns on Embodiment 1 of this invention The rear perspective view which shows the external appearance of the base unit which concerns on Embodiment 1 of this invention The block diagram which shows the structure of the biometric information monitor which concerns on Embodiment 1 of this invention. The figure for demonstrating the case where a measured value is displayed by normal character size on the display screen of the biometric information monitor which concerns on Embodiment 1 of this invention. The flowchart for demonstrating the display screen switching process operation | movement of the biometric information monitor which concerns on Embodiment 1 of this invention. The figure for demonstrating the case where a measured value is displayed by the enlarged character size on the display screen of the biometric information monitor which concerns on Embodiment 1 of this invention. The block diagram which shows the structure of the biometric information monitor which concerns on Embodiment 2 of this invention. The flowchart for demonstrating the display screen switching process operation | movement of the biometric information monitor which concerns on Embodiment 2 of this invention. The figure which shows the state which isolate | separated the monitor main body and base unit of the biological information monitor which concerns on Embodiment 2 of this invention. The block diagram which shows the structure of the biometric information monitor which concerns on Embodiment 3 of this invention. The flowchart for demonstrating the display screen switching process operation | movement of the biometric information monitor which concerns on Embodiment 3 of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
1 is a front perspective view (FIG. 1 (a)) and a rear perspective view (FIG. 1 (b)) showing an appearance of a biological information monitor according to Embodiment 1 of the present invention. FIG. 2 is a diagram illustrating a state in which each component of the biological information monitor according to the present embodiment is separated, and FIG. 3 is a diagram illustrating the bottom surface of the carrier of the biological information monitor according to the present embodiment.

  The biological information monitor 1 according to this embodiment includes four components such as a carrier 100, an input device 200, a display device 300, and a base unit 400.

  The input device 200 includes an input connector unit 201 for connecting a biological information detection unit attached to a patient, and is a device for acquiring biological information data from the patient via the input connector unit 201. The display device 300 is a device having a display unit 301 for displaying the biological information data acquired by the input device 200. The base unit 400 is installed at a predetermined place such as a bedside, and a mounting table on which the monitor main body 1a of the biological information monitor 1 (that is, a combination of the carrier 100, the input device 200, and the display device 300) is mounted. It is a device used as.

  The carrier 100 includes a carrier main body 100a configured to be connectable to each component in order to carry the biological information monitor 1 or some of the components. Further, the carrier body 100a is provided with a handle portion 101 configured to be gripped when the carrier body 100a is carried together with the connected components. In FIG. 1, the input device 200, the display device 300, and the base unit 400 are integrated with each other by connection with the carrier 100, but each component can be separated from the carrier 100 as shown in FIG. 2.

  Therefore, the carrier main body 100a of the carrier 100 has a first mounting portion 102 to which the input device 200 can be mounted and a second mounting portion 103 to which the display device 300 can be mounted. The bottom portion 104 of the carrier main body 100a is It is configured so that it can be placed on the base unit 400.

  The 1st mounting part 102 is comprised so that the input apparatus 200 can be mounted in the carrier main body 100a by inserting the input apparatus 200 from the side surface opening part of the carrier main body 100a. When the inserted input device 200 hits the deepest part in the insertion direction of the carrier body 100a, the connector 202 (see FIG. 5) of the input device 200 is connected to the first connector 105 (see FIG. 5) of the carrier 100. Thus, the input device 200 is held by the carrier 100. The input device 200 can be separated from the carrier body 100a by being pulled out in the direction opposite to that at the time of insertion.

  The second mounting portion 103 is configured such that the display device 300 can be mounted on the carrier body 100a by inserting a connector portion 302 (see FIG. 5) provided on the back surface of the display device 300 from above. When the connector portion 302 is inserted into the second mounting portion 103 and locked, the display device 300 is held by the carrier body 100a. The display device 300 can be separated from the carrier main body 100a by pulling it upwards as opposed to inserting it.

  An engagement projection 106 and a third connector 107 are provided on the bottom 104 of the carrier body 100a. The bottom 104 of the carrier body 100a is placed above the upper surface 401 of the base unit 400 so that the engaging protrusion 106 is aligned with the position of the engaging recess 402 (see FIG. 4) provided on the upper surface 401 (see FIG. 4) of the base unit 400. The carrier protrusion 100 is engaged with the engagement recess 402, so that the carrier body 100a can be stably placed on the base unit 400. Further, when the engagement protrusion 106 engages with the engagement recess 402, the connector cover 403 (see FIG. 4) provided on the upper surface 401 of the base unit 400 is opened, and the base unit 400 disposed therein is opened. The third connector portion 107 of the carrier body 100a is connected to the connector portion 404 (see FIG. 5). The carrier body 100a separates the carrier body 100a from the base unit 400 by holding the handle 101 of the carrier body 100a and lifting the carrier body 100a upward while pressing the lock release button 405 (see FIG. 4) of the base unit 400. Can be made.

  FIG. 4 is a rear perspective view showing the appearance of the base unit 400 (FIGS. 4A and 4B). A removable cover 406 is provided on the back surface of the base unit 400. The cover 406 is a member for covering the network interface unit 407 and the like. After removing the cover 406, a connection means (for example, a LAN cable) that enables communication with an external device is connected to the network interface unit 407, whereby the components of the biological information monitor 1 are connected to the communication network 700 (FIG. 5). It is possible to communicate with an external device via (see). Further, the back surface of the base unit 400 has a power cord connector portion 408 for connecting to a commercial power source 600 (see FIG. 5). By connecting the power cord to the power cord connector 408, it is possible to receive power from the commercial power source 600.

  FIG. 5 is a block diagram showing the configuration of the biological information monitor 1 of the present embodiment, and schematically shows the functional configuration of each component. As described above, the biological information monitor 1 includes the carrier 100, the input device 200, the display device 300, and the base unit 400. In FIG. 5, solid lines connecting the blocks indicate transmission paths for various biological information data and operation signals, and dotted lines indicate power supply paths.

  The input device 200 includes an input connector unit 201, a connector unit 202, a measurement processing unit 203, a storage unit 204, and a power supply control unit 205.

The input connector unit 201 is a connector for connecting the biological information detection unit attached to the patient to the input device 200. In the present embodiment, the biological information detection unit detects an electrocardiogram electrode 501 for detecting an electrocardiogram, a blood pressure measurement cuff 502 for detecting blood pressure, a body temperature sensor 503 for detecting body temperature, and SpO ₂ . The SpO ₂ sensor 504 for detecting the cardiac output and the cardiac output sensor 505 for detecting the cardiac output are included, but the biological information detection unit is not limited thereto. Therefore, in this embodiment, the input connector unit 201 includes the first input connector unit 201a for connecting the electrocardiographic electrode 501, the second input connector unit 201b for connecting the blood pressure measurement cuff 502, and the body temperature sensor 503. A third input connector portion 201c for connecting the SpO ₂ sensor 504, a fourth input connector portion 201d for connecting the SpO ₂ sensor 504, and a fifth input connector portion 201e for connecting the cardiac output sensor 505. Yes. The input connector unit 201 functions as an interface between the connected biological information detection unit and the measurement processing unit 203.

  The measurement processing unit 203 executes a predetermined measurement process by executing a program stored in the storage unit 204. Through this measurement process, the measurement processing unit 203 measures the biological information data of the patient using the biological information detection unit connected to the input connector unit 201. In addition, since the conventionally well-known thing is applicable about the measuring method of various biological information using the said biological information detection part, the detailed description is abbreviate | omitted here. The measurement processing unit 203 can also read biometric information data measured in the past and stored in the storage unit 204.

  The storage unit 204 stores a program executed by the measurement processing unit 203 and biological information data measured by the measurement processing unit 203.

  The connector unit 202 is a connector that is connected to the first connector unit 105 of the carrier 100 when the input device 200 is attached to the carrier 100, thereby electrically connecting the carrier 100 and the input device 200. The power supply and biological information data transmission paths between the carrier 100 and the input device 200 are connected when the carrier 100 and the input device 200 are electrically connected, and the carrier 100 and the input device 200 are connected. Shut off when electrically disconnected.

  The power control unit 205 receives power supply from the outside of the input device 200 via the connector unit 202, and thereby drives each unit of the input device 200.

  The display device 300 includes a display unit 301, a connector unit 302, a detection unit 304, a display processing unit 305, a storage unit 306, and a power supply control unit 307.

  The connector unit 302 is a connector that is connected to the second connector unit 108 of the carrier 100 when the display device 300 is attached to the carrier 100, thereby electrically connecting the carrier 100 and the display device 300. The power supply path and the transmission path between the carrier 100 and the display device 300 are connected when the carrier 100 and the display device 300 are electrically connected, and the carrier 100 and the display device 300 are electrically connected. Blocked when disconnected.

  The detection unit 304 includes a human sensor 308 for detecting the presence or absence of a person, and detects the use environment of the biological information monitor 1 and its change based on the detection result of the human sensor 308. The human sensor 308 is, for example, an infrared sensor or a video camera, and is configured to detect when there is a person around the display unit 301. Therefore, the detection unit 304 is used when a person around the display unit 301 moves away from the display unit 301 or when a person who is not around the display unit 301 approaches the display unit 301. Judge that the environment has changed. The detection unit 304 also determines that the use environment has changed when a person around the display unit 301 approaches the display unit 301. The detection unit 304 generates a detection signal according to the detected change in the use environment, and transmits this detection signal to the display processing unit 305.

  In medical facilities, doctors and nurses may always have a PHS (Personal Handy-phone System), so this PHS position information is provided to the detection unit 304 as position information of the doctors and nurses. You may make it do. In this case, the detection unit 304 does not use the human sensor 308, but based on the position information of the doctor or nurse, whether or not there is a person around the display unit 301 (that is, whether or not there is a person around the display unit 301). And the change thereof can be detected in the same manner as described above.

  The display processing unit 305 executes a predetermined display process by executing a program stored in the storage unit 306. By this display processing, the display processing unit 305 causes the display unit 301 to display the biological information data in the form of measurement values or waveforms. The display processing unit 305 can display the biological information data on the display unit 301 in real time when performing display processing on the biological information data received from the outside via the connector unit 302. However, the display processing unit 305 can display the past biological information data in a form such as a trend graph by reading the biological information data stored in the storage unit 306 and performing display processing on the data. .

  In addition, the display processing unit 305 executes a display screen switching process to be described later, and changes the character size or the font of the measurement value displayed on the display unit 301 in accordance with the detection signal transmitted from the detection unit 304.

  The display unit 301 is a touch panel, for example, and has not only a display function for displaying biometric information data but also a function as an input unit that receives an input operation by an operator. When the display unit 301 receives an input operation by the operator, the display unit 301 generates an operation signal for operating each unit in the display device 300 or each unit in the biological information monitor 1 according to the content of the operation. The generated operation signal is appropriately transmitted through a transmission path in the display device 300 or the biological information monitor 1.

  The storage unit 306 stores biometric information data displayed on the display unit 301 by display processing.

  The power control unit 307 receives power supply from the outside of the display device 300 via the connector unit 302, and thereby drives each unit of the display device 300.

  The base unit 400 includes a connector unit 404, a network interface unit 407, a main power supply unit 409, a standby power supply unit 410, and a power supply control unit 411.

  The connector unit 404 is a connector that electrically connects the carrier 100 and the base unit 400 when the carrier 100 is placed on the base unit 400 and the third connector unit 107 of the carrier 100 is connected to the connector unit 404. It is. The power supply path and the transmission path between the carrier 100 and the base unit 400 are connected when the carrier 100 and the base unit 400 are electrically connected, and the carrier 100 and the base unit 400 are electrically connected. Blocked when disconnected.

  The power control unit 411 supplies power to the carrier 100 via the connector unit 404. The power supply control unit 411 supplies the power supply from the main power supply unit 409 to the carrier 100 in normal times, but alternatively supplies the power supply from the standby power supply unit 410 to the carrier 100 in an emergency (for example, during a power failure). May be supplied.

  The main power supply unit 409 receives a power supply from an external commercial power supply 600 through a power cord connected to a power cord connector unit 408 (see FIG. 4), and includes a circuit that performs AC-DC conversion and the like. It is.

  The standby power supply unit 410 includes a charging unit 412 and a battery housing unit 413. The standby power supply unit 410 charges the battery stored in the battery storage unit 413 using the main power supply unit 409 as a driving power supply. The battery accommodating part 413 is comprised so that the battery which can be accommodated in the battery accommodating part 109 in the carrier 100 mentioned later can be accommodated. Therefore, the standby power supply unit 410 can charge the backup battery used in the carrier 100 in the base unit 400. In addition, the power supply from the battery after the charge accommodated in the battery accommodating part 413 can be used as a power supply for emergency.

  The network interface unit 407 is an interface that connects the base unit 400 to the communication network 700. By connecting the base unit 400 to the communication network 700, data communication between the input device 200 and the display device 300 of the biological information monitor 1 and an external device becomes possible.

  The carrier 100 includes a first connector unit 105, a second connector unit 108, a third connector unit 107, a transmission processing unit 110, a power supply control unit 111, and a standby power supply unit 112.

  Each of the first connector unit 105, the second connector unit 108, and the third connector unit 107 electrically connects the carrier 100 and each component as described above.

  The transmission processing unit 110 is configured to relay a transmission path between the first connector unit 105, the second connector unit 108, and the third connector unit 107, and includes the input device 200, the display device 300, and the base unit 400. Data transmission between them.

  The standby power supply unit 112 includes a charging unit 113 and a battery housing unit 109. The standby power supply unit 112 charges the battery stored in the battery storage unit 109 using the main power supply unit 409 as a driving power supply. In addition, the power supply from the battery after the charge accommodated in the battery accommodating part 109 can be used as a power supply for emergency.

  The power control unit 111 is a control unit that selects a driving power source for the input device 200 and the display device 300. That is, the power supply control unit 111 is configured to supply power from the standby power supply unit 112 (more specifically, a battery housed therein) in the carrier 100 and the base unit 400 (mainly the main power supply unit 409 in the base unit 400). ) Is selected as the drive power supply. For example, the power supply control unit 111 selects the power supply from the base unit 400 when the power supply from the base unit 400 can be received, and the power supply from the standby power supply unit 112 in the carrier 100 otherwise. select.

  In the present embodiment, the case where the detection unit 304 including the human sensor 308 is provided in the display device 300 has been described as an example. However, the present invention is not limited to this case. For example, when a video camera or the like is installed in a medical facility, the detection unit 304 acquires image data of the video camera, and uses the biological information monitor 1 from this image data (that is, around the display unit 301). Whether there is a person) and its change may be detected. In this case, the detection unit 304 may not include the human sensor 308. In addition, if the detection unit 304 is configured to transmit a detection signal generated according to a change in use environment to the display processing unit 305, the detection unit 304 may detect another component of the biological information monitor 1 (for example, the carrier 100 or the input). The apparatus 200) may be equipped.

  Next, a display screen switching process operation in the case where a use environment change occurs during the patient monitoring operation of the biological information monitor 1 of the present embodiment will be described.

Here, electrocardiogram data, blood pressure data, SpO ₂ data, and respiratory data (electrocardiographic electrode 501), which are biological information data measured from a patient using the electrocardiogram electrode 501, the blood pressure measurement cuff 502, and the SpO ₂ sensor 504. A case where the respiration data (impedance measurement from) is monitored will be described as an example. During the patient monitoring operation, as shown in FIG. 6, each waveform is displayed in real time on the waveform display units 801 to 804, and each measured value is displayed in real time on the measured value display units 805 to 808.

  In the present embodiment, a display screen switching process shown in the flowchart of FIG. In the present embodiment, as an example of the display screen switching process, a process of changing the character size of the measurement value displayed on the display unit 301 will be described.

  First, in step S <b> 11, it is determined whether or not it is detected that a person has moved away from the periphery of the display unit 301 as a change in usage environment. Since the patient monitoring operation is started by the operator operating the display unit 301 that is a touch panel, there is a person around the display unit 301 at the start of the monitoring operation. In general, since the operator confirms the monitoring display screen near the display unit 301, a person is generally present around the display unit 301 during the monitoring operation. However, it may be necessary for the person to perform some work at a position away from the periphery of the display unit 301. In such a case, the detection unit 304 can notify the display processing unit 305 of a change in the use environment by a detection signal. As a result, the display processing unit 305 can recognize a change in the use environment that no one is present around the display unit 301.

  Unless the change in the use environment is recognized (S11: NO), the process of step S11 is repeated. When the change in the use environment is recognized (S11: YES), the display processing unit 305 displays the measured value. The character size of the measurement value displayed on the display units 805 to 808 is enlarged (step S12).

  When step S12 is executed, for example, as shown in FIG. 8, the measurement values displayed on the measurement value display units 805 to 808 are enlarged (enlarged character size screen). In other words, the measured value is displayed with an enlarged character size that is significantly larger than the character size (normal character size) in FIG. When the display unit 301 is viewed from a distant position, the visibility of the display screen as a whole is lower than when the display unit 301 is viewed from a close position. The visibility can be improved. Therefore, a person who has viewed the display unit 301 from a distant position can check the measurement value without having to return to the vicinity of the display unit 301.

  In addition, when a person leaves the periphery of the display unit 301, the person may no longer see the display screen of the display unit 301, but may still continue to watch the display screen. In general, it is considered that the former possibility is higher, but in the present embodiment, the character size is intentionally increased assuming the latter possibility. This is important biological information data related to the patient's condition rather than simple text information displayed on the display unit 301. For those who have seen it on the screen even from a remote location, This is because it is necessary to instantly recognize the condition.

  Further, in the present embodiment, as a method of enlarging the character size of the measurement value, each area of the measurement value display units 805 to 808 is enlarged only in the vertical direction without being enlarged in the left-right direction, and the measurement value within the area is measured. Increase the font size. Therefore, the change of each area | region of the waveform display parts 801-804 does not arise, such as the width | variety of the waveform display parts 801-804 being narrowed. Therefore, only the character size of the measurement value can be changed without changing the waveform size. If increasing the character size of the measurement value affects the amplitude and aspect ratio of the waveform and deforms the waveform, the person who sees it may make a wrong decision. Such a misjudgment can be prevented because the waveform is not deformed. Further, when viewing the display unit 301 from a distant position, it is sufficient to enlarge only the measurement value because the measurement value is mainly watched instead of the waveform.

  Next, in step S13, it is determined whether or not it is detected that a person has approached the periphery of the display unit 301 as a change in use environment, and whether or not an input operation has been performed is determined.

  As long as a person approaches the display unit 301 and no input operation is performed (S13: NO), the process of step S13 is repeated, and when a person approaches the display unit 301 and an input operation is performed. (Step S13: YES), the display processing unit 305 returns the screen of the display unit 301 to the normal character size screen as shown in FIG. 6, and returns the character size of the displayed measurement value (step S14).

  In the present embodiment, the character size is not restored simply by approaching the periphery of the display unit 301, and the character size is restored only after an input operation is performed. For this reason, it is possible to prevent the character size from being reduced by an irrelevant person who does not see the display screen and does not perform an input operation just passing near the display unit 301.

  The display screen switching process returns to step S11 again after step S14.

  As described above, according to the present embodiment, a change in the use environment of the biological information monitor 1 is detected based on whether or not there is a person around the display unit 301, and the measurement value characters displayed on the display unit 301 are detected. Change the size accordingly. Thereby, even if an operator temporarily leaves | separates from the circumference | surroundings of the display part 301, the visibility of the biometric information data (display data) currently displayed can be improved automatically without bothering an operator's hand. it can.

  Note that the display screen switching process may be a process of changing the font of the character of the measurement value displayed on the display unit 301. In other words, instead of enlarging or restoring the character size of the measurement value, you can change the font type of the character to a typeface for emphasis (for example, a typeface such as bold or shaded characters) Also good. Further, both the character size and the font may be changed.

(Embodiment 2)
FIG. 9 is a block diagram showing the configuration of the biological information monitor 1 according to Embodiment 2 of the present invention. Constituent parts that are the same as or correspond to the constituent parts described in Embodiment 1 with reference to FIG. Since the present embodiment is different from the first embodiment mainly in that the use environment change of the biological information monitor 1 is detected based on the brightness of external light, the difference will be mainly described and the embodiment will be described. Detailed description of points common to 1 is omitted.

  The biological information monitor 1 according to the present embodiment illustrated in FIG. 9 includes an illuminance sensor 309 in the detection unit 304.

  The illuminance sensor 309 detects the brightness of external light. Therefore, the detection unit 304 detects the use environment of the biological information monitor 1 and its change based on the detection result of the illuminance sensor 309. The illuminance sensor 309 is a phototransistor, for example, and is configured to detect the brightness around the display unit 301. Therefore, the detection unit 304 determines that the usage environment has changed when the brightness of the external light exceeds a predetermined level. In addition, the detection unit 304 determines that the use environment has changed even when the brightness of external light falls below a predetermined level. The detection unit 304 generates a detection signal according to the detected change in the use environment, and transmits this detection signal to the display processing unit 305.

  Next, a display screen switching process operation in the case where a use environment change occurs during the patient monitoring operation of the biological information monitor 1 of the present embodiment will be described. In the present embodiment, a display screen switching process shown in the flowchart of FIG.

  First, in step S21, it is determined whether or not it has been detected that the brightness of external light around the display unit 301 has exceeded a predetermined level as a change in the usage environment. Since the biological information monitor 1 according to the present embodiment has a configuration suitable for patient transportation, it may move with the patient during the patient monitoring operation, and the brightness of the external light changes significantly with this movement. There is. Specifically, the monitor main body 1a of the biological information monitor 1 is normally placed on the base unit 400 installed in the bedside or ambulance in the medical facility, and the patient monitoring operation is started in this state. The However, the monitor main body 1a may be separated from the base unit 400 and carried for patient transportation as shown in FIG. In some cases, the monitor main body 1a may be temporarily taken outside. At this time, the external light may be dazzling compared to the lights in the medical facility or the ambulance. Alternatively, the monitor body 1a may be brought into a very bright operating room through a dark corridor. In such a case, the detection unit 304 can notify the display processing unit 305 of a change in the use environment by a detection signal. As a result, the display processing unit 305 can recognize a change in usage environment in which the external light exceeds a predetermined level.

  Unless the change in the use environment is recognized (S21: NO), the process in step S21 is repeated. When the change in the use environment is recognized (S21: YES), the display processing unit 305 displays the measured value. The character size of the measurement value displayed on the display units 805 to 808 is enlarged as shown in FIG. 8 (step S22).

  When the external light exceeds a predetermined level and becomes dazzling, the visibility of the entire display screen decreases, but in this embodiment, the character size is enlarged as described above, so that the visibility of the measurement value can be improved. It becomes possible. Particularly during patient transportation, what the carrier mainly watches is not a waveform but a measured value, so it is sufficient to enlarge only the measured value.

  Next, in step S23, it is determined whether or not it has been detected that the brightness of ambient light around the display unit 301 has fallen below a predetermined level as a change in usage environment.

  Unless the change in the use environment is recognized (S23: NO), the process in step S23 is repeated. When the change in the use environment is recognized (S23: YES), the display processing unit 305 displays the display unit. As shown in FIG. 6, the screen 301 is returned to the normal character size screen, and the character size of the displayed measurement value is restored (step S24).

  As described above, according to the present embodiment, the change in the use environment of the biological information monitor 1 is detected based on the brightness of the ambient light around the display unit 301, and the character of the measurement value displayed on the display unit 301 Change the size accordingly. Thereby, the visibility of display data can be improved, without bothering a carrier's hand.

(Modification of Embodiment 2)
In the second embodiment, the character size is increased when the external light exceeds a predetermined level, that is, when it is bright, and the character size is decreased when the external light is below the predetermined level, that is, when it is dark. The reverse process may be performed. That is, the character size may be increased when the external light is dark, and the character size may be decreased when the external light is bright. When control is performed in the display device 300 to reduce the brightness of the entire display screen of the display unit 301 when the surroundings become dark, for example, the visibility may be reduced depending on the display color of the measurement value. . In this modification, such visibility degradation can be prevented.

(Embodiment 3)
FIG. 12 is a block diagram showing a configuration of biological information monitor 1 according to Embodiment 3 of the present invention. In the first and second embodiments, the same or corresponding components as those described with reference to FIGS. 5 and 9 are denoted by the same reference numerals. The present embodiment is mainly based on the point that the use environment change of the biological information monitor 1 is detected based on whether the monitor main body 1a is placed on the base unit 400 or separated from the base unit 400. 1 and 2 are different. Therefore, in the present embodiment, the difference will be mainly described, and the detailed description of the points common to the first and second embodiments will be omitted.

  The biological information monitor 1 according to the present embodiment shown in FIG. 12 does not have a sensor in the detection unit 304, and has a lock detection sensor 114 in the carrier 100.

  The lock detection sensor 114 may be any sensor that detects a state in which the monitor body 1a is locked by the base unit 400 when the monitor body 1a is placed on the base unit 400 as a locked state. It is a sensor which detects a locked state. The lock detection sensor 114 outputs a detection signal based on the detection result. This detection signal is transmitted to the detection unit 304 via the transmission path of the carrier 100 and the display device 300.

  The detection unit 304 detects the use environment of the biological information monitor 1 and its change based on the detection result of the lock detection sensor 114. That is, the detection unit 304 determines that the use environment has changed when the monitor main body 1a is separated from the base unit 400. The detection unit 304 also determines that the use environment has changed even when the monitor main body 1 a is placed on the base unit 400. The detection unit 304 generates a detection signal according to the detected change in the use environment, and transmits this detection signal to the display processing unit 305.

  In the present embodiment, the lock detection sensor 114 of the carrier 100 is used as a sensor that provides the detection unit 304 with a material for determining whether the monitor body 1a is separated from or placed on the base unit 400. However, other sensors may be used. For example, a sensor that detects an electrical connection state between the monitor main body 1a and the base unit 400 can be used.

  Next, a display screen switching process operation in the case where a use environment change occurs during the patient monitoring operation of the biological information monitor 1 of the present embodiment will be described. In the present embodiment, a display screen switching process shown in the flowchart of FIG. 13 is executed in the display processing unit 305 during the patient monitoring operation.

  First, in step S31, it is determined whether or not it has been detected that the monitor body 1a has been separated from the base unit 400 as a change in usage environment.

  Unless the change in the use environment is recognized (S31: NO), the process in step S31 is repeated. When the change in the use environment is recognized (S31: YES), the display processing unit 305 determines the measured value. The character size of the measurement value displayed on the display units 805 to 808 is enlarged as shown in FIG. 8 (step S32).

  Usually, the monitor main body 1a is separated from the base unit 400 during patient transportation. In that case, the carrier often watches the measured value rather than the waveform. In the present embodiment, since the character size of the measurement value is enlarged when the monitor main body 1a is separated from the base unit 400, the visibility of the measurement value can be improved during patient transportation.

  Next, in step S33, it is determined whether or not it is detected that the monitor main body 1a is placed on the base unit 400 as a change in the use environment.

  Unless the change in the use environment is recognized (S33: NO), the process in step S33 is repeated. When the change in the use environment is recognized (S33: YES), the display processing unit 305 displays the display unit. The screen 301 is returned to the normal character size screen as shown in FIG. 6, and the character size of the displayed measurement value is restored (step S34).

  As described above, according to the present embodiment, the use environment change of the biological information monitor 1 is detected based on whether the monitor main body 1a is placed on the base unit 400 or separated from the base unit 400, The character size of the measurement value displayed on the display unit 301 is changed according to the change. Thereby, the visibility of display data can be improved, without bothering a carrier's hand.

  Although the embodiment of the present invention has been described above, the above description is an illustration of a preferred embodiment of the present invention, and the scope of the present invention is not limited to this. Therefore, the above embodiment can be implemented with various modifications.

  Further, the above embodiments can be implemented in combination as appropriate.

DESCRIPTION OF SYMBOLS 1 Biological information monitor 1a Monitor main body 100 Carrier 100a Carrier main body 101 Handle part 102 1st mounting part 103 2nd mounting part 104 Bottom part 105 1st connector part 107 3rd connector part 108 2nd connector part 109, 413 Battery accommodating part 110 Transmission Processing unit 111, 205, 307, 411 Power supply control unit 112, 410 Standby power supply unit 113, 412 Charging unit 114 Lock detection sensor 200 Input device 201 Input connector unit 202, 302, 404 Connector unit 203 Measurement processing unit 204, 306 Storage unit DESCRIPTION OF SYMBOLS 300 Display apparatus 301 Display part 304 Detection part 305 Display processing part 308 Human sensor 309 Illuminance sensor 400 Base unit 407 Network interface part 409 Main power supply part

Claims (6)

A biological information monitor having a biological information acquisition unit that acquires biological information data of a patient, and a display unit that displays measurement values of the acquired biological information data in real time,
A detection unit for detecting a change in a use environment of the biological information monitor;
A display processing unit that changes the size or typeface of the displayed measurement value according to a change in the use environment of the biological information monitor detected by the detection unit;
I have a,
The detection unit detects a change in the usage environment based on the brightness of external light,
The display processing unit enlarges the character size of the displayed measurement value character or changes the displayed character font of the measurement value to an emphasized typeface when the brightness of external light exceeds a predetermined level. To
Biological information monitor. The display processing unit restores the character size or typeface of the measurement value to be displayed when the brightness of external light is below the predetermined level.
The biological information monitor according to claim 1 . A biological information monitor having a biological information acquisition unit that acquires biological information data of a patient, and a display unit that displays measurement values of the acquired biological information data in real time,
A detection unit for detecting a change in a use environment of the biological information monitor;
A display processing unit that changes the size or typeface of the displayed measurement value according to a change in the use environment of the biological information monitor detected by the detection unit;
A monitor body having the display unit and the display processing unit;
A mounting table on which the monitor body can be mounted;
Have
The detection unit detects that the monitor body is separated from the mounting table,
When the monitor main body is separated from the mounting table, the display processing unit enlarges the size of the displayed measurement value character or changes the displayed measurement value character font to a highlight font. To
Biological information monitor. The detection unit detects that the monitor body is mounted on the mounting table,
The display processing unit restores the character size or typeface of the displayed measurement value when the monitor body is placed on the mounting table.
The biological information monitor according to claim 3 . The display unit includes a measurement value display unit that displays a measurement value of the acquired biological information data in real time, and a waveform display unit that displays a waveform of the acquired biological information data in real time,
The display processing unit changes the size or typeface of the measurement value to be displayed without changing the size of the displayed waveform.
The biological information monitor according to any one of claims 1 to 4 . A biological information monitor having a biological information acquisition unit that acquires biological information data of a patient, and a display unit that displays measurement values of the acquired biological information data in real time,
A detection unit for detecting a change in a use environment of the biological information monitor;
A display processing unit that changes the size or typeface of the displayed measurement value according to a change in the use environment of the biological information monitor detected by the detection unit;
A monitor body having the display unit and the display processing unit;
A power supply unit capable of supplying power to the monitor body;
Have
The detection unit detects that the monitor body is electrically separated from the power supply unit,
When the monitor main body is electrically separated from the power supply unit, the display processing unit enlarges the size of the displayed measurement value character or emphasizes the displayed measurement character font Change to typeface,
Biological information monitor.