JP6560037B2 - Biological information measuring apparatus and control method thereof - Google Patents

Description

  The present invention relates to a biological information measuring apparatus and a control method thereof.

A biological information measuring device such as a biological information monitor or a telemeter is a device that continuously measures so-called vital signs such as an electrocardiogram, respiratory rate, heart rate, blood pressure, body temperature, and arterial oxygen saturation (SpO ₂ ). For critically ill patients, it is necessary to monitor vital signs when transporting from an ambulance to an operating room or from an operating room to an intensive care unit (ICU). Used. The portable biological information monitor is sometimes called a transport monitor, a mobile monitor, a transport monitor, or the like.

  Some portable biological information monitors have a configuration that can be used as an input module of a stationary biological information monitor (also called a bedside monitor or a host monitor) (Patent Document 1). For example, when moving a patient whose biological information is being measured, the input module portion can be removed and measurement while the patient is moving can be continued.

JP 2014-132931 A

  The portable biological information monitor is transported with the patient to be measured, and the measured biological information is displayed in real time, or an alarm is notified when an abnormality is detected, thereby monitoring the status of the patient being transported. Support. It also has a function of recording (storing) information such as measured values and trends at the time of occurrence of a predetermined event (for example, detection of abnormal values) called measured data itself or recall data in the apparatus. There are also things.

  For example, in a case where the same biological information monitor can be used continuously in a case where the same biological information monitor can be used in a case where the same biological information monitor can be used in a case where it is transported to a hospital by an ambulance and transported to an ICU after surgery, The biological information measured during the operation and the biological information measured while being transported from the operating room to the ICU can be used without interruption and are useful. However, in reality, such a consistent operation is difficult.

  For example, when a patient has been transported by an ambulance, the number of biometric information monitors that can be used by the ambulance will be reduced if the biological information monitor used during the transport is used as it is in the operating room of the hospital. Also, in hospitals, for example, operating rooms and ICUs are often managed independently, and operations such as sharing equipment between departments are not easy. Further, in the case where the portable biological information monitor is configured as an input module to which the stationary biological information monitor can be attached and detached, the stationary part alone may not function as the biological information monitor. In this case, a plurality of input modules must be prepared, and the cost and management become complicated.

  Furthermore, when the same biological information monitor is shared among a plurality of departments, a problem relating to alarm setting may occur. The alarm setting is information that defines a condition relating to alarm output, such as a threshold value for alarm notification and whether or not alarm output is performed, for example, for each parameter. For example, the alarm setting of the biological information monitor may be different between a state where a doctor is always on the patient side, such as an operating room, and a case where there is no doctor, such as during transportation or a hospital room. For example, since the doctor can directly monitor the patient's condition, an alarm setting may be made so that no alarm is output in the operating room. When such an alarm-set biological information monitor is continuously used in a hospital room, an alarm is not output in the central monitor that receives measurement values at the nurse station, and an abnormal state may be overlooked.

  From such a background, separate biometric information monitors are used in the four phases of ambulance-operating room, operating room (during operation), operating room-ICU, and ICU, and the biometric information measured in each phase follows. In general, it was not used in this phase.

  The present invention has been made in view of such problems of the prior art, and when taking the measurement of biological information about the same patient to another biological information measuring device, it is possible to take over information related to past measurements. An object of the present invention is to provide a biological information measuring apparatus and a control method thereof.

The above-described object is to provide a measuring unit that measures a plurality of biological information of a patient, an output unit that outputs the measured plurality of biological information in real time, and the biological information measured by the measuring unit satisfies a condition defined in the alarm setting. In this case, an alarm means for outputting an alarm, a communication means for communicating with an external device, and a communication means for communicating information related to past measurements when taking measurements of a plurality of biological information on the same patient to another biological information measuring device and control means for transmitting to the other device via the control means is achieved by the biological information measuring device, characterized in that not included in the information on past measurement alarm settings.

  With such a configuration, according to the present invention, when the measurement of biological information about the same patient is taken over by another biological information measurement device, the biological information measurement device capable of taking over information related to past measurements and the same A control method can be provided.

It is a block diagram which shows the function structural example of the biological information monitor as an example of the biological information measuring device which concerns on embodiment of this invention. It is a perspective view which shows the external appearance example of the biometric information monitor and host monitor which concern on embodiment. It is a flowchart which shows the operation | movement outline | summary of the measurement taking over process in the biometric information monitor which concerns on embodiment.

  Hereinafter, the present invention will be described in detail based on exemplary embodiments with reference to the drawings. Hereinafter, an embodiment in which the present invention is applied to a portable biological information monitor as an example of a biological information measuring device will be described. The term “portable” as used herein means that the battery can be driven and it is assumed that biological information is measured even during patient transportation.

  FIG. 1 is a block diagram showing a functional configuration example of a portable biological information monitor (hereinafter simply referred to as a biological information monitor) 100 and a host monitor 200 as a biological information measuring apparatus according to an embodiment of the present invention. The biological information monitor 100 according to the present embodiment functions as an input module of a stationary biological information monitor when attached (connected) to the host monitor 200, but the function of cooperation with the host monitor 200 is as follows. Not required.

The biological information monitor 100 includes an input unit 110 to which various sensors and measurement modules can be connected. The biological information monitor 100 constantly monitors a patient's state by displaying biological signals sequentially obtained from the sensors and detecting abnormalities. It is a device for doing. Since the biological information monitor 100 is usually used for patients who need to monitor vital signs such as critically ill patients, a plurality of living bodies such as an electrocardiogram, respiratory rate, heart rate, blood pressure, body temperature, arterial oxygen saturation (SpO ₂ ) and the like are used. It has a function to measure information.

The input unit 110 includes connectors and interfaces that mechanically and electrically connect various sensors and measurement modules. In the present embodiment, it is assumed that the following sensors and measurement modules are connected as an example.
The electrocardiogram electrode 111 is composed of a plurality of electrodes attached to a predetermined part of the patient's limbs and / or chest surface, and detects an induced waveform corresponding to the attachment part. The number and type of electrocardiographic electrodes 111 vary depending on the number and type of induced waveforms to be measured. Further, the respiration rate can be calculated by an impedance method in which a thin high-frequency current is passed between the electrocardiographic electrodes to measure the impedance of the thorax, and the movement of the thorax is detected from the change. A blood pressure transducer 112 is attached to the end of a catheter inserted into the patient's blood vessel and converts blood pressure into an electrical signal.

The pulse wave / SpO ₂ sensor 113 is a so-called pulse oximeter, which optically detects and inputs arterial oxygen saturation (SpO ₂ ) and fingertip volume pulse wave. Utilizing the fact that the light absorbance of hemoglobin varies depending on whether it is associated with oxygen, and also the absorbance varies depending on the wavelength of light. Generally, arterial oxygen saturation is obtained using two wavelengths of red light and infrared light. Measure. Further, since the AC component of the transmitted light or reflected light changes according to the blood volume, this AC component is detected as an optical fingertip volume pulse wave (PTG: photoplethysmograph).

The body temperature sensor 114 is, for example, a thermistor temperature sensor attached to a patient, and indicates a resistance value corresponding to the temperature. The cardiac output sensor 115 is a thermistor temperature sensor placed in the blood vessel of the patient, and measures the blood temperature. A thermodilution curve is obtained from the time change of the blood temperature, and the cardiac output (CO) can be obtained from an equation applying the infusate temperature and the Stewart-Hamilton formula. Further, vascular resistance (SVR) can be obtained from the cardiac output and the blood pressure value. The cardiac output may be obtained non-invasively by the impedance method. The respiratory gas sensor 116 measures the carbon dioxide (CO ₂ ) concentration in the exhaled breath. Note that the sensors and modules connected to the input unit 110 illustrated in FIG. 1 are merely examples, and other components may be included, or some of the illustrated components may be omitted.

  The preprocessing unit 120 performs preprocessing predetermined according to a signal, such as application of an A / D conversion process or a power supply noise removal filter, on the biological signal input to the input unit 110 and stores the preprocessed data in the buffer memory 130. To do. The preprocessing unit 120 may be configured by hardware such as a DSP or an ASIC, or at least a part of functions may be realized by software by the control unit 140. The buffer memory 130 is used as a temporary storage of signals, a work area of the control unit 140, and a video memory.

  The control unit 140 has a programmable processor such as a central processing unit (CPU), a RAM, and a ROM, and controls the operation of the biological information monitor 100 by loading a program stored in the ROM into the RAM and executing it by the CPU. To achieve the overall functionality. Note that at least a part of the ROM may be rewritable.

  The external interface (I / F) 150 is a communication interface with the host monitor 200, and is connected to the external interface 220 of the host monitor 200 directly or via a connector provided on a housing of the apparatus.

  The alarm indicator 160 is alerted by light or sound, for example, when the control unit 140 determines that the operation of the device, the waveform or numerical value of the biological signal, etc. satisfy the conditions defined in a predetermined condition (alarm setting). Are one or more output devices for outputting and notifying. The alarm indicator 160 may typically be a light emitting element or a speaker. Alarms can be classified according to importance (level), and alarms according to importance can be output. The warning can be combined with not only the alarm indicator 160 but also a message display on the display unit 170. For example, when a predetermined operation on the operation unit 180 is detected, the control unit 140 stops outputting the alarm.

  The display unit 170 is typically a color liquid crystal display, and the control unit 140 displays important biological information such as an electrocardiogram waveform, a heart rate, a body temperature, a blood pressure value, a respiration rate, and a respiration waveform according to a predetermined layout. It is displayed on the display unit 170 in real time. In addition, the control unit 140 changes the display content and layout of the display unit 170 in response to an instruction from the operation unit 180.

  The operation unit 180 is a key and switch group including a power switch, and allows the user to input instructions and information to the biological information monitor 100. Note that at least some of the switches and keys may be realized as a software switch that combines a touch panel provided on the display unit 170 and a GUI display by the control unit 140. The operation unit 180 may include an external key or switch.

  The wireless communication unit 190 is a communication unit used by the biological information monitor 100 to transmit data that has been measured and information about an event that occurred during the measurement to an external device, for example, another biological information measurement device that takes over measurement of biological information. It is an example. There is no particular limitation on the protocol used for wireless communication, but a protocol capable of peer-to-peer (P2P) communication is used. For example, near field communication (NFC) protocols such as WiFi (IEEE 802.11x), Bluetooth (registered trademark), IrDA, and ISO / IEC 18092 can be used. Also, a plurality of communication methods may be combined, such as Bluetooth / WiFi handover in which NFC is used for authentication processing and communication after authentication processing is performed by Bluetooth or WiFi. Instead of the wireless communication unit 190 (or in addition to the wireless communication unit 190), a wired communication unit for realizing the same function may be included.

For example,
・ Biometric data (raw data) obtained by measurement,
Information related to specific events that occurred during measurement (for example, events that fall under alarm settings) and related data (event types, various measurement data for a predetermined time before and after the event),
・ Information indicating the long-term trend of measurement data,
Can be set to be transmitted to the takeover destination device as information relating to past measurements. Since alarm settings that do not match the environment in which the take-over biological information measuring device is used may be set, the alarm settings are not included in the data to be transmitted to the take-over device.

  In addition to the illustrated configuration, a configuration for handling a memory card (such as a memory card slot), a configuration for using a cuff (such as a pump and a pressure sensor), and a printer (recorder) may be included. The biological information monitor 100 can be driven by a battery. Further, when connected to the host monitor 200, power can be supplied from the host monitor 200 through the external I / F 150.

  In the biological information monitor 100 having such a configuration, for example, when the power is turned on through the operation unit 180, processing for a biological signal input through the input unit 110 is started. Specifically, the preprocessing unit 120 performs A / D conversion and the like, and starts storing various biological signals in the buffer memory 130 as measurement data. Then, the control unit 140 starts various parameter calculation processing, display processing, evaluation processing, abnormality determination processing, and the like for the measurement data stored in the buffer memory 130. In addition, the control unit 140 transfers measurement data from the buffer memory 130 to the storage unit 195, or when a predetermined event occurs, the control unit 140 associates predetermined information such as measurement data at that time with the event in the storage unit 195. Save it.

  The host monitor 200 reads out data stored in the storage unit 195 of the biological information monitor 100 and transmits the data to an external device for managing the biological information monitor 100 and patient-related data, such as a central monitor and a server device. Provide functionality. If the biological information monitor 100 is connected in a measurement state, the host monitor 200 outputs measurement data to the display unit 270 or an external device in real time.

  The external I / F 220 is a communication interface for connecting the biological information monitor 100. The buffer memory 240 is used for temporarily storing measurement data received through the external I / F 220 or used as a work area for the host control unit 210. The host control unit 210 has a programmable processor such as a central processing unit (CPU), a RAM, and a ROM, and controls the operation of the host monitor 200 by loading a program stored in the ROM into the RAM and executing it by the CPU. To achieve the overall functionality. Note that at least a part of the ROM may be rewritable.

The operation unit 230 is a key and switch group including a power switch. When the biological information monitor 100 is connected, some functions of the operation unit 180 of the biological information monitor 100 can be invalidated and the operation of the operation unit 230 can be validated.
The communication unit 250 is connected to a hospital network and is used to communicate with an external device on the network. The communication unit 250 may be a wired communication unit or a wireless communication unit.

The display unit 270 has a larger display area than the display unit 170. When the biological information monitor 100 is connected, the host control unit 210 displays the measured biological information and information based on the biological information on the display unit 270 in a predetermined layout. The items and layout displayed on the display unit 270 may be different from those displayed on the display unit 170 when the biological information monitor 100 is used alone.
A bus 260 interconnects the components of the host monitor 200.

2A is a perspective view showing an example of the appearance of the host monitor 200, and FIG. 2B is an external view of the biological information monitor 100. The same reference numerals are given to the same components as those in FIG.
As shown on the left side of FIG. 2A, a space for mounting the biological information monitor 100 is provided on the back side of the host monitor 200. The biological information monitor 100 can be attached to the host monitor 200 by directly fitting the connector of the external I / F 150 provided at the lower part of the right side surface to the connector of the external I / F 220 of the host monitor 200. In addition, not only the external I / F connector but also the housing is configured to prevent the biological information monitor 100 from being inadvertently detached.

  Since the display unit 170 of the biological information monitor 100 is hidden while being attached to the host monitor 200, the display is performed on the display unit 270 of the host monitor 200. In the example of FIG. 2, the case where the communication unit 250 of the host monitor 200 is a wireless communication unit is illustrated, but instead of (or in addition to the wireless communication unit), a wired communication unit is included. May be.

Next, the measurement takeover process of the biological information monitor 100 in this embodiment will be described using the flowchart shown in FIG.
In the measurement takeover process, for example, in the biological information monitor 100 that is executing a measurement operation, an instruction to press a takeover button (takeover / transmit / receive / receive) included in the operation unit 180 is given. May not require explicit instructions. For example, when there is a high possibility that the detected counterpart device is a desired counterpart device, such as when the wireless communication unit 190 uses close proximity wireless communication, the presence of a communicable device is detected. You may comprise so that a measurement taking over process may be started automatically.

  Here, it is assumed that both the transmission-side and reception-side devices related to the measurement handover process are the biological information monitor 100, but the reception-side devices (for example, the “takeover” button and the “receive” button are not provided. The biological information monitor on the pressed side is not limited to the portable biological information monitor as long as the measurement handover process on the receiving side described below can be performed, and may be any biological information measuring device. In addition to the authentication information for establishing communication such as the unique information (ID) of the patient to be measured, the measurement operation and measurement data for the same patient are handed over to the transmission device and the reception device in advance. Set the information for confirming. This information can be stored in a nonvolatile storage area in the control unit 140 or the host control unit 210, for example.

  For example, when a patient is transported from an operating room to an ICU, the patient is handed over and information about the patient is transmitted (reported) between medical staff in both departments. The biological information monitor (transmission-side device) managed by the operating room at the time of sending is removed from the sensors attached to the patient, and the biological information monitor (reception-side device) managed by the ICU is newly connected to the sensors. Measurement starts (takes over).

  FIG. 3A shows an outline of the measurement handover process in the transmission side, and FIG. 3B shows the measurement handover process in the biological information monitor 100 on the reception side. Here, P2P communication between apparatuses is performed by a method compliant with Wi-Fi Direct, but a method according to any other standard can be used.

  When the measurement information handover process is started, the biological information monitor 100 according to the present embodiment executes a search process (discovery) for searching for a communicable partner device regardless of the transmission side and the reception side (S201, S301). In the search process, following a scan operation that searches for existing Wi-Fi networks and P2P groups, a search operation that transmits a response request (plobe request) and a listen operation that waits for reception of a response request on a specific channel The partner device is found by repetition.

  When the partner device is found by the search processing, connection processing such as negotiation, authentication, and address setting for determining the responsibility of the group owner (GO) and the client is executed (S203, S303). In the case of Wi-Fi Direct, since WPS (Wi-Fi Protected Setup) can be used for authentication processing, for example, the start of WPS is instructed by pressing a specific button on the operation unit 180 on the transmission side and reception side devices. Thus, settings such as SSID and encryption key are automatically performed.

  In this embodiment, the biological information monitor on the transmission side (during measurement execution) (for example, the biological information monitor on the side where the “takeover” button or the “transmit” button is pressed) is instructed to start WPS. The measurement data and event information up to this point will be confirmed as data. However, this is an example, and other conditions may be used, such as until the time when one or more sensors are removed (the time when signal input is no longer detected).

  When the connection is established, the control unit 140 of the transmission-side device requests the reception-side device to transmit patient-specific information (here, referred to as patient ID) (S205). On the other hand, the control unit 140 of the receiving device transmits the patient ID (S305).

  The control unit 140 of the transmission side device compares the patient ID set in advance with the received patient ID, and if they do not match, determines that the reception side device is not the intended device, advances the process to S213, and connects. Is released. On the other hand, if the patient IDs match, the control unit 140 of the transmission side apparatus advances the process to S209, reads out the data to be taken over from the storage unit 195, and starts transmission to the reception side apparatus.

  In step S211, the control unit 140 of the transmission-side apparatus continues transmission if transmission of data to be taken over is not completed, and proceeds to step S213 if transmission is completed, and releases the connection. Thereby, the process of the biological information monitor 100 on the transmission side is completed, and thereafter, it can be used for measurement for another patient in the operating room. Therefore, a situation in which the host monitor 200 cannot be used because the biological information monitor 100 does not return can be minimized.

  On the other hand, after transmitting the patient ID, the control unit 140 of the receiving device waits for the start of data reception in S307. If the connection is canceled while waiting for the start of reception, the control unit 140 of the reception side apparatus ends the measurement takeover process. When reception of data starts in S307, the control unit 140 of the reception-side apparatus sequentially stores the received data in the storage unit 195 in S309. The control unit 140 of the receiving side device continues to receive and store data until the end of reception is confirmed in S311. When the reception is completed, the process proceeds to S313 and the connection is released.

  In step S <b> 315, the control unit 140 of the reception side apparatus starts measurement processing of biological information obtained from the various sensors 111 to 116 connected to the input unit 110. The biometric information measurement process does not need to be started after the measurement takeover process is completed, and can be started when any signal is input from the input unit 110. Thereby, the time when measurement is interrupted can be shortened.

  The control unit 140 of the biological information monitor 100 on the receiving side manages and uses the data received in the measurement handover process as data measured before the data measured by itself. For example, when there is a display request for data before the measurement start time, the control unit 140 reads the data from the storage unit 195 and displays it.

  When the receiving-side biometric information monitor 100 is connected to the host monitor 200, the data received in the takeover process, the data measured by the receiving-side biometric information monitor 100, the event information, and the like are transferred to the server device, etc. It is managed as information for the same patient. This makes it possible to consistently manage and use the measurement data for the same patient, except during the period for replacing the biological information monitor.

  In addition, since the alarm setting is not taken over, the alarm output according to the alarm setting in the receiving-side biological information monitor 100 is performed in the measurement after the taking over. Since alarm notification in accordance with the usage environment in which measurement after handover is performed can be realized, the risk of oversight caused by a difference in alarm settings with the biological information measurement device before handover can be greatly suppressed.

(Other embodiments)
The present invention can also be realized as a program that causes the measurement takeover processing of the above-described embodiment to be performed by one or more processors in the computer of the system or apparatus. Therefore, such a program and a computer-readable recording medium recording the program also constitute the present invention. Moreover, the measurement takeover process of the above-mentioned embodiment can also be implemented using hardware (for example, ASIC, programmable logic, etc.).

DESCRIPTION OF SYMBOLS 100 ... Biometric information monitor, 110 ... Input part, 120 ... Pre-processing part, 130 ... Buffer memory, 140 ... Control part, 170 ... Display part, 180 ... Operation part, 200 ... Host monitor, 210 ... Host control part

Claims (10)

A measuring means for measuring a plurality of biological information of the patient,
And output means for outputting a plurality of biometric information the measurement in real time,
Alarm means for outputting an alarm when the biological information measured by the measuring means satisfies a condition defined in the alarm setting;
A communication means for communicating with an external device;
When taking over the measurement of a plurality of biometric information for the same patient other biological information measurement device, and a control means for transmitting information on past measurement to the other device via the communication means,
The biological information measuring device , wherein the control means does not include the alarm setting in the information related to the past measurement. When it is confirmed that the other biological information measuring device has predetermined information , the control means sends information related to the past measurement to the other biological information measuring device through the communication means. The biological information measuring apparatus according to claim 1, wherein the biological information measuring apparatus transmits the biological information.   The biological information measuring apparatus according to claim 2, wherein the predetermined information is unique information of the patient. The biological information measuring device according to any one of claims 1 to 3 , wherein the biological information measuring device is portable. The biological information measuring device is connectable to a stationary biological information measuring device, and functions as an input module of the stationary biological information measuring device when connected to the stationary biological information measuring device. The biological information measuring device according to claim 4 . A measuring means for measuring a plurality of biological information of the patient,
And output means for outputting a plurality of biometric information the measurement in real time,
A communication means for communicating with an external device;
When taking measurement of biological information about the same patient from another biological information measuring device, it relates to past measurements including data of biological information measured by the other biological information measuring device from the other biological information measuring device. Control means for receiving information through the communication means and storing it in a storage device;
I have a,
Wherein, the data of the biological information received from the other biological information measurement device, the biological information, wherein Rukoto used as the data of the biological information measured in the past from the measured biological information in the measurement means Measuring device. Biological information measuring device as claimed in any one of claims 6, wherein the communication means is a wireless communication means for performing communication of said other devices and peer-to-peer. 8. The biological information measuring apparatus according to claim 7 , wherein proximity wireless communication is used for authentication processing in communication with the other apparatus. A measuring means for measuring a plurality of biological information of the patient,
And output means for outputting a plurality of biometric information the measurement in real time,
Alarm means for outputting an alarm when the biological information measured by the measuring means satisfies a condition defined in the alarm setting;
A control method of a biological information measuring device having a communication means for communicating with an external device,
When taking over the measurement of the plurality of biometric information for the same patient other biological information measurement device, it has a control step of transmitting to the other device information regarding past measurement via the communication means,
In the control step, the alarm setting is not included in the information related to the past measurement . A measuring means for measuring a plurality of biological information of the patient,
And output means for outputting a plurality of biometric information the measurement in real time,
A control method of a biological information measuring device having a communication means for communicating with an external device,
When taking measurement of biological information about the same patient from another biological information measuring device, it relates to past measurements including data of biological information measured by the other biological information measuring device from the other biological information measuring device. A storage step of receiving information through the communication means and storing it in a storage device ;
A process of using biometric information data received from the other biometric information measuring device as biometric information data measured in the past from the biometric information measured by the measuring means;
A control method for a biological information measuring device, comprising: