JP2023176827A - Pulse oximeter, biological information measurement system, and program - Google Patents

Abstract

To provide a pulse oximeter or the like capable of more reliably measuring oxygen saturation in blood and a respiratory condition of a subject when a respiration sensor is used in addition to the pulse oximeter.SOLUTION: A pulse oximeter 100 includes: a probe 160 that measures oxygen saturation in blood of a subject; a communication unit that performs radio communication with a respiration sensor 200 that measures a respiratory condition of the subject; and a control unit that performs pairing with one respiration sensor 200 among the respiratory sensors that can perform radio communication by the communication unit.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pulse oximeter, a biological information measurement system, and a program.

Sleep apnea syndrome (SAS), in which breathing temporarily stops during sleep, is attracting attention as a disease that can lead to high blood pressure and sleep disorders. Sleep apnea syndrome not only aggravates lifestyle-related diseases, but also causes problems such as falling asleep and losing concentration during the day when people are normally active because they are unable to get enough sleep at night. Such a condition increases the chance that the subject (patient) will have an accident, and therefore, prompt examination and treatment are necessary as soon as possible.

Generally, testing for sleep apnea syndrome involves monitoring the sleep state of the subject using polysomnography at home or in the hospital, and calculating the apnea-hypopnea index (AHI) from the number of apneas and hypopneas. Implemented. In addition, as a screening method for sleep apnea syndrome, a pulse oximeter is used to measure changes in arterial blood oxygen saturation (hereinafter referred to as blood oxygen saturation: SpO ₂ ) while the subject is sleeping. be. In addition, in order to further improve the diagnostic accuracy of sleep apnea syndrome, in addition to the blood oxygen saturation index measured with a pulse oximeter, we will use a respiratory sensor to measure the patient's breathing status. Diagnosis of breathing or hypopnea may also be performed.

Patent Document 1 discloses a sleep apnea testing device that includes at least two of an oronasal flow sensor, a snoring sound sensor, a blood oxygen concentration sensor, a chest movement sensor, and an abdominal movement sensor. Further, Patent Document 2 discloses a pulse oximeter platform in which a body temperature module, a blood pressure module, etc. are connected in series to a pulse oximeter.

Japanese Patent Application Publication No. 2006-320732 Patent No. 6865737

However, in conventional sleep apnea testing devices, a blood oxygen concentration sensor, a chest movement sensor, etc. are connected by wire using a wire. Further, in conventional pulse oximeter platforms, the pulse oximeter and the body temperature module, etc. are connected by mechanical means. Therefore, for example, if a subject turns over during a test, these wiring or mechanical means may get caught on parts of the body or bedding, causing the pulse oximeter and the sensors connected to it to shift from the appropriate measurement site. , it may come off. Due to these factors, it may not be possible to accurately measure the blood oxygen saturation level or respiratory state of the subject.

Therefore, in order to solve the above problems, the present invention provides a pulse oximeter that can more reliably measure the blood oxygen saturation level and respiratory state of a subject when a respiratory sensor is used in addition to a pulse oximeter. Provides meters, biological information measurement systems, and programs.

The pulse oximeter according to the present invention includes:
a measurement unit that measures the blood oxygen saturation of the subject;
a communication unit that performs wireless communication with a breathing sensor that measures the breathing state of the subject;
a control unit that performs pairing with one of the respiratory sensors capable of wireless communication by the communication unit;
Equipped with

The biological information measurement system according to the present invention includes:
Equipped with a respiratory sensor that measures the patient's breathing status and a pulse oximeter,
The pulse oximeter is
a measurement unit that measures the blood oxygen saturation of the subject;
a communication unit that performs wireless communication with a breathing sensor that measures the breathing state of the subject;
a control unit that performs pairing with one of the respiratory sensors capable of wireless communication by the communication unit;
Equipped with

The program according to the present invention is
to the computer,
A function that allows the measurement unit to measure the blood oxygen saturation of the subject,
A function that performs wireless communication with a breathing sensor that measures the breathing state of the subject,
A function of pairing with one of the respiratory sensors capable of wireless communication;
Make it happen.

According to the present invention, it is possible to prevent the pulse oximeter and the respiratory sensor from shifting or coming off the measurement site, and it is possible to more reliably measure the blood oxygen saturation level and respiratory state of the patient.

1 is a diagram showing a configuration example of a biological information measurement system according to a first embodiment; FIG. FIG. 1 is a block diagram showing a configuration example of a pulse oximeter according to a first embodiment. FIG. 3 is a diagram showing an example of a biological information display screen displayed on the display section of the pulse oximeter according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of a respiratory sensor according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of a charger according to the first embodiment. It is a ladder chart showing an example of the operation of the biological information measurement system when pairing is performed between the pulse oximeter and the respiratory sensor according to the first embodiment. FIG. 3 is a diagram showing an example of a pairing setting screen displayed on the display unit of the pulse oximeter according to the first embodiment. It is a ladder chart showing an example of the operation of the pulse oximeter and the respiratory sensor during the pairing confirmation work according to the first embodiment. It is a figure showing an example of a pairing confirmation screen displayed on a display part at the time of pairing confirmation work concerning a 1st embodiment. It is a ladder chart showing an example of the operation of the pulse oximeter 100 and the respiratory sensor 200 when testing for sleep apnea syndrome according to the first embodiment. It is a ladder chart showing an example of the operation of the biological information measurement system when pairing is performed between the pulse oximeter and the respiratory sensor according to the second embodiment.

<First embodiment>
[Configuration example of biological information measurement system 10]
FIG. 1 is a diagram showing an example of the configuration of a biological information measurement system 10 according to the first embodiment. As shown in FIG. 1, the biological information measurement system 10 includes a pulse oximeter 100 that measures a subject's blood oxygen saturation, a breathing sensor 200 that measures the breathing state of the subject, and a pulse oximeter 100 and a breathing sensor 200. and a charger 300 for charging. The pulse oximeter 100 and the respiratory sensor 200 are connected by short-range wireless communication, and a one-to-one communication link is established by pairing (including bonding) between the pulse oximeter 100 and the respiratory sensor 200. are doing. An example of a standard for short-range wireless communication is Bluetooth (registered trademark). Further, short-range wireless communication standards such as ZigBee (registered trademark) can also be used.

The pulse oximeter 100 includes a probe 160 as a measuring section and a main body 110. Probe 160 and main body 110 are connected via connection cable 170. The probe 160 can be attached to a measurement site such as a fingertip of a subject, and measures blood oxygen saturation, pulse rate, respiration rate, etc. during sleep of the subject. The main body 110 is configured, for example, in the form of a wristwatch that can be worn on the wrist of the subject, and receives first measurement data based on the subject's blood oxygen saturation level measured by the probe 160 and the paired breathing sensor 200. Second measurement data and the like corresponding to the measured breathing sounds of the subject are stored. Note that the first measurement data and the second measurement data are examples of biological information.

The breathing sensor 200 is attached to a measurement site such as near the subject's nose, throat, or chest, and measures the breathing state of the subject during sleep. The respiratory sensor 200 transmits second measurement data corresponding to the measured respiratory state of the subject to the pulse oximeter 100 via short-range wireless communication such as Bluetooth (registered trademark). Examples of the breathing sensor 200 include a nasal breathing sensor that measures the subject's nasal breathing, a peripheral arterial wave sensor that measures the subject's peripheral arterial waves, and an airway sound sensor that measures the subject's airway sounds.

In this embodiment, charger 300 is used when pairing pulse oximeter 100 and respiratory sensor 200. Before testing for sleep apnea syndrome, it is necessary to charge the pulse oximeter 100 and the breathing sensor 200 in advance. During the charging process, the pulse oximeter 100 and the breathing sensor 200 are placed around the charger 300 and charged. It is connected to the device 300 by wire or wirelessly. The arrangement environment and connection environment of information devices during such charging work is also suitable for pairing settings, so in this embodiment, the charger 300 is used to connect the pulse oximeter 100 and the respiratory sensor 200. Perform pairing efficiently.

Charger 300 has a recessed attachment portion 302 to which respiration sensor 200 is removably attached. When the respiration sensor 200 is attached to the attachment part 302, the charger 300 charges the pulse oximeter 100 and performs pairing with the pulse oximeter 100. A pulse oximeter 100 can be connected to the charger 300 via the charging cable 20. When the pulse oximeter 100 is connected, the charger 300 charges the pulse oximeter 100 and performs pairing with the respiratory sensor 200.

Further, the pulse oximeter 100 can be connected to the computer 400 via the communication cable 30. The computer 400 reads first measurement data and the like corresponding to the subject's blood oxygen saturation level measured by the pulse oximeter 100 and the like via the communication cable 30 and analyzes the data. Dedicated software for analyzing the first measurement data and the like is installed in the computer 400 in advance. In addition, pulse oximeter 100
and the computer 400 may be connected by the short-range wireless communication described above.

[Example of configuration of pulse oximeter 100]
FIG. 2A is a block diagram showing an example of the configuration of pulse oximeter 100 according to the first embodiment. FIG. 2B shows an example of a biological information display screen displayed on the display unit 118 of the pulse oximeter 100.

The probe 160 includes a light emitting section 162 and a light receiving section 164, as shown in FIG. 2A. The light emitting unit 162 includes an LED (Light Emitting Diode) and emits red light and infrared light toward the measurement site of the subject. The light receiving section 164 has a photodiode, receives the transmitted light (or reflected light) corresponding to the blood flow in the artery that is emitted from the light emitting section 162 and passes through the measurement site, and generates an analog signal corresponding to the received transmitted light. The first measurement data is output to the AD conversion section 114.

As shown in FIG. 2A, the main body 110 includes an AD conversion section 114, an operation reception section 116, a display section 118, a storage section 120, a wireless communication section 122 as a communication section, a power supply section 124, and an interface 130. and.

The AD conversion unit 114 converts the analog first measurement data output from the light receiving unit 164 of the probe 160 into digital first measurement data and outputs the digital first measurement data to the control unit 150 and the like. Note that a circuit may be provided between the light receiving section 164 and the AD converting section 114 to remove noise from the analog first measurement data or to amplify the signal.

The operation reception unit 116 includes, for example, buttons provided on the main body 110 and a touch panel combined with the surface of the display unit 118. When a button is pressed or a touch panel is touched by a worker, the operation reception unit 116 generates an instruction signal corresponding to the press or touch operation and outputs it to the control unit 150. The operation receiving unit 116 receives, for example, a confirmation operation for confirming whether the breathing sensor 200 near the pulse oximeter 100 is the paired breathing sensor 200.

The display unit 118 includes, for example, an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) display. The display unit 118 is provided on the surface of the main body 110 and displays biological information 118a (first measurement data) such as the blood oxygen saturation level of the subject measured by the probe 160 based on the display control of the control unit 150. . Specifically, as shown in FIG. 2B, the biological information display screen of the display unit 118 displays SpO ₂ (blood oxygen saturation), pulse rate, respiration rate, etc. as the biological information 118a of the subject. Ru.

The storage unit 120 includes, for example, a nonvolatile semiconductor memory, a hard disk, an optical disk, or the like. The storage unit 120 stores various programs such as pairing control executed by the control unit 150 and parameters necessary for execution of processing by the program, parameters according to the subject's blood oxygen saturation level measured by the pulse oximeter 100, etc. The first measurement data and the second measurement data corresponding to the breathing state of the subject measured by the breathing sensor 200 are stored.

The wireless communication unit 122 transmits and receives various signals and various data to and from the respiratory sensor 200 by short-range wireless communication based on the communication control of the control unit 150. For example, the wireless communication unit 122 receives second measurement data corresponding to the breathing state of the subject measured by the paired breathing sensor 200.

The power supply unit 124 supplies each part of the pulse oximeter 100 with power corresponding to the operating voltage of each part. The power supply unit 124 includes a battery such as a dry battery or a rechargeable battery. For example, if the power supply unit 124 is a rechargeable battery, charging may be performed by connecting the charging cable 20 to the first interface 330 of the charger 300, or the cable may be connected to the interface of an information device such as the computer 400. Charging may be performed by connecting the . Alternatively, charging may be performed by connecting one end of a separately prepared cable to the interface 130 and inserting an outlet plug provided at the other end into an outlet.

Interface 130 is a connection part that can connect pulse oximeter 100 to charger 300 and computer 400. The interface 130 transmits and receives data to and from information devices such as the charger 300 and the computer 400, and receives power supplied from the charger 300. Examples of the interface 130 include a USB (Universal Serial Bus) port and a LAN port.

The control unit 150 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a memory, and the like. The CPU is a hardware processor that centrally controls the operation of each part of the pulse oximeter 100 by reading various programs stored in the memory, loading them into the RAM, and executing various processes according to the loaded programs. Further, the CPU performs pairing with one respiratory sensor 200 among the respiratory sensors capable of wireless communication using the wireless communication unit 122. Note that the CPU may be composed of a single processor or a plurality of processors.

[Configuration example of breathing sensor 200]
FIG. 3 is a block diagram showing an example of the configuration of the respiratory sensor 200 according to the first embodiment. As shown in FIG. 3, the respiratory sensor 200 includes a microphone 212, an AD conversion section 214, a storage section 220, a wireless communication section 222, a power supply section 224, an interface 230, a notification section 240, and a control section 250. and.

The microphone 212 can be attached to and detached from measurement sites such as the subject's nose, throat, and chest. The microphone 212 measures the breathing state of the subject, such as breathing sounds and airway sounds, while sleeping, and outputs second measurement data corresponding to the measured breathing state to the AD converter 214.

The AD conversion unit 214 converts the analog second measurement data output from the microphone 212 into digital second measurement data and outputs the digital second measurement data to the control unit 250 and the like. Note that a circuit may be provided between the microphone 212 and the AD converter 214 to remove noise from the analog second measurement data and amplify the signal.

The storage unit 220 is, for example, a nonvolatile semiconductor memory, a hard disk, an optical disk, or the like. The storage unit 220 stores various programs such as pairing control executed by the control unit 250, parameters necessary for execution of processing by the program, second measurement data according to the breathing sounds of the subject measured by the microphone 212, etc. Remember.

The wireless communication unit 222 transmits and receives various signals and various data to and from the pulse oximeter 100 by short-range wireless communication based on the communication control of the control unit 250.

The power supply section 224 supplies each section of the respiratory sensor 200 with power corresponding to the operating voltage of each section. The power supply unit 224 includes a battery such as a dry battery or a rechargeable battery. For example, if the power supply unit 224 is a rechargeable battery, charging may be performed by connecting the interface 230 to the second interface 332 of the charger 300 directly or via a cable.

The interface 230 has a connection part (terminal) that can be connected to the first interface 330 of the charger 300, receives power supplied from the charger 300, and transmits various signals and data to and from the charger 300. Send and receive. Note that the charging method may be, for example, a non-contact power supply or a charging method in which charging is performed by connecting to the charger 300 using a cable.

The notification unit 240 includes, for example, a light emitting unit that turns on, blinks, and turns off, or a speaker that outputs audio. When there is a confirmation request from the paired pulse oximeter 100 to confirm the pairing, the notification unit 240 sends a pulse oximeter to the worker who lends the pulse oximeter 100 etc. to the patient. Notification is made that the breathing sensor 200 is paired with the oximeter 100.

The control unit 250 includes a CPU, RAM, memory, and the like. The CPU reads out various programs stored in the memory, expands them into the RAM, and executes various processes according to the expanded programs, thereby centrally controlling the operation of each part of the respiratory sensor 200 and communicating with other information devices. It is a hardware processor that performs pairing control.

[Configuration example of charger 300]
FIG. 4 is a block diagram showing an example of the configuration of charger 300 according to the first embodiment. As shown in FIG. 4, the charger 300 includes a power supply section 310, an operation reception section 316, a first interface 330, a second interface 332, a notification section 340, and a control section 350.

The power supply section 310 supplies predetermined power to each section of the charger 300, the pulse oximeter 100 connected to the first interface 330, and the respiratory sensor 200 connected to the second interface 332. The power supply unit 310 includes a battery such as a dry battery or a rechargeable battery. For example, if the power supply unit 310 is a rechargeable battery, charging may be performed by connecting one end of the cable to the power supply unit 310 and inserting an outlet plug provided at the other end into an outlet.

The operation reception unit 316 includes, for example, a button provided on the housing, a touch panel as a display device provided on the housing, a microphone for instructing an operation by voice input, and the like. When the operator presses a button, touches a touch panel, or inputs voice, the operation reception unit 316 generates an instruction signal according to each operation or input and outputs it to the control unit 350.

The notification unit 340 includes, for example, an LED that lights up, blinks, or goes out, and a speaker that outputs audio. For example, when charging of the breathing sensor 200 and the like is completed, the notification unit 340 notifies the worker of the completion of charging of the breathing sensor 200 and the like by turning on, blinking, turning off, or outputting a sound.

First interface 330 has a connection connectable to pulse oximeter 100 via charging cable 20 . The first interface 330 transmits and receives various signals and data to and from the pulse oximeter 100, and supplies a predetermined amount of power to the pulse oximeter 100. Examples of the first interface 330 include a USB port and a LAN port.

The second interface 332 has a connection part (terminal) connectable to the interface 230 of the respiratory sensor 200. The second interface 332 transmits and receives various signals and data to and from the respiratory sensor 200, and also supplies predetermined power to the respiratory sensor 200. For example, the second interface 332 is provided at the mounting portion 302 to which the respiratory sensor 200 is attached, as shown in FIG. Note that the charging method may be, for example, a non-contact power supply or a charging method in which a cable is connected to the charger 300 to perform charging.

The control unit 350 includes a CPU, RAM, memory, and the like. The CPU reads various programs stored in the memory, deploys them to the RAM, and executes various processes according to the developed programs, thereby centrally controlling the operations of each part of the respiratory sensor 200 and pairing information devices with each other. It is a hardware processor that performs control.

[Example of operation of biological information measurement system 10 during pairing setting]
When testing for sleep apnea syndrome at home, charge the pulse oximeter 100 and breathing sensor 200 before mailing the pulse oximeter 100 and breathing sensor 200 to the subject's home. Pairing with the breathing sensor 200 is performed.

FIG. 5A is a ladder chart showing an example of the operation of the biological information measurement system 10 when pairing is performed between the pulse oximeter 100 and the respiratory sensor 200 according to the first embodiment. FIG. 5B shows an example of a pairing setting screen displayed on the display unit 118 of the pulse oximeter 100. Note that it is assumed that the pulse oximeter 100 is powered on when pairing is set. Furthermore, it is assumed that the respiratory sensor 200 operates in a sleep mode or only performs short-term reception operations except during the measurement period specified by the pulse oximeter 100.

Control unit 350 of charger 300 determines whether breathing sensor 200 is attached to attachment unit 302 (step S10). Specifically, the control unit 350 determines whether or not the respiratory sensor 200 is attached to the charger 300 depending on whether the interface 230 of the respiratory sensor 200 is connected (contacted) to the second interface 332 provided on the attachment unit 302. Determine the presence or absence.

When the control unit 350 of the charger 300 determines that the breathing sensor 200 is attached to the attachment unit 302 (step S10: YES), the process proceeds to step S11. In this case, charging of the breathing sensor 200 is also started. On the other hand, if it is determined that the respiratory sensor 200 is not attached to the attachment part 302 (step S10: NO), the process returns to step S10.

Next, the control unit 350 of the charger 300 outputs a pairing mode transition signal that causes the respiratory sensor 200 to transition to a pairing mode as a pairing operation to the respiratory sensor 200 via the second interface 332 (step S11 ).

Next, upon acquiring the pairing mode transition signal via the interface 230, the control unit 250 of the respiratory sensor 200 transitions from the sleep mode to the pairing mode (step S12).

Next, the control unit 350 of the charger 300 determines whether the pulse oximeter 100 is connected by wire via the charging cable 20 (step S13). Specifically, control unit 350 determines whether charging cable 20 is connected to first interface 330 of charger 300.

When the control unit 350 of the charger 300 determines that the pulse oximeter 100 is connected (step S13: YES), the process proceeds to step S14. In this case, charging of the pulse oximeter 100 is also started. On the other hand, if it is determined that the pulse oximeter 100 is not connected (step S13: NO), the process returns to step S13.

Next, the control unit 350 of the charger 300 determines whether a pairing setting operation for pairing the pulse oximeter 100 and the breathing sensor 200 has been accepted by the operation reception unit 316 (step S14). Specifically, when the operation reception unit 316 includes a button, the determination is made based on whether or not the button has been pressed by the operator.

When the control unit 350 of the charger 300 determines that the pairing setting operation has been accepted by the operation reception unit 316 (step S14: YES), the process proceeds to step S15. On the other hand, if the operation accepting unit 316 determines that the pairing setting operation is not accepted (step S14: NO), the process returns to step S14.

Next, the control unit 350 of the charger 300 transmits a pairing mode transition signal for performing a pairing operation to the pulse oximeter 100 via the charging cable 20 or the like (step S15).

Next, upon receiving the pairing mode transition signal via the charging cable 20 or the like, the control unit 150 of the pulse oximeter 100 transitions from the power-on initial state to the pairing mode, and displays the pairing setting screen on the display unit 118. (Step S16). For example, as shown in FIG. 5B, the display unit 118 displays the words "Respiratory sensor requests pairing" and an "OK" button as a pairing setting screen. For example, the control unit 150 searches for nearby information devices, such as the respiratory sensor 200, that are within the range of short-range wireless communication and have transitioned to pairing mode. If an information device such as the respiratory sensor 200 is detected through the search, the control section 150 may display the model name and model number of the information device on the screen of the display section 118. Further, when a plurality of information devices are detected, the operation receiving unit 116 may be able to select the model name, etc. of one information device to be paired among the plurality of information devices. In this embodiment, respiratory sensor 200 is detected as an information device that is within the range of short-range wireless communication and has transitioned to pairing mode, and the pairing setting screen shown in FIG. 5B is displayed.

Next, the control unit 150 of the pulse oximeter 100 accepts a pairing authentication operation for authenticating pairing in response to a pairing request from the respiratory sensor 200 that has transitioned to pairing mode in the operation reception unit 116. It is determined whether or not it has been completed (step S17). Specifically, if the operation reception unit 116 includes a button, the determination is made based on whether or not the button has been pressed by the operator.

Next, when the control unit 150 of the pulse oximeter 100 determines that the pairing authentication operation has been accepted by the operation reception unit 116 (step S17: YES), the process proceeds to step S18. On the other hand, if it is determined that the pairing authentication operation has not been accepted (step S17: NO), the process returns to step S17.

Next, the wireless communication unit 122 of the pulse oximeter 100 transmits a pairing signal to the respiratory sensor 200 via wireless communication such as Bluetooth (registered trademark) (step S18). For example, the control unit 150 of the pulse oximeter 100 transmits a pairing signal to the wireless communication unit 122 for the respiratory sensor 200 detected in step S16 that is within the wireless communication range and has transitioned to pairing mode. let The pairing signal includes, for example, identification information of the pulse oximeter 100.

Next, the wireless communication unit 222 of the respiratory sensor 200 receives the pairing signal transmitted from the pulse oximeter 100. The control unit 250 authenticates the pulse oximeter 100 as a pairing partner based on the pairing signal received by the wireless communication unit 222, and establishes a pairing (one-to-one communication link) with the pulse oximeter 100. Step S19). As shown in FIG. 2B, the display unit 118 of the pulse oximeter 100 displays identification information 118b such as the ID of the breathing sensor 200 that is the pairing partner. Through such pairing control, the pulse oximeter 100 and one respiratory sensor 200 are paired.

In addition, in the example mentioned above, when the respiration sensor 200 was attached to the charger 300, the respiration sensor 200 was changed to the pairing mode, but the present invention is not limited to this. For example, when the breathing sensor 200 is attached to the charger 300 and the operation reception unit 316 of the charger 300 receives a pairing mode transition instruction, the breathing sensor 200 may be transitioned to the pairing mode. Further, when the pulse oximeter 100 is wired connected to the charger 300 via the communication cable 30 and the operation reception unit 316 of the charger 300 receives a pairing mode transition instruction, the respiration sensor 200 is transitioned to the pairing mode. You can do it like this. Further, when the breathing sensor 200 is removed from the attachment part 302 of the charger 300, the breathing sensor 200 may be changed to the pairing mode. Furthermore, the breathing sensor 200 detects electrical contact between the interface 230 of the breathing sensor 200 and the second interface 332 of the charger 300 when attached to the mounting part 302 of the charger 300, and enters the pairing mode. You may transition to

[Example of operation of pulse oximeter 100 and breathing sensor 200 during pairing confirmation work]
After the pairing of the pulse oximeter 100 and the respiratory sensor 200 is completed, when the pulse oximeter 100 and the respiratory sensor 200 are to be lent to a subject, the work of packaging the pulse oximeter 100 and the like for mailing is performed. In the first embodiment, before carrying out the packing operation, a confirmation operation is performed to confirm whether the breathing sensor 200 is paired with the pulse oximeter 100. This is because when packing and mailing a pair of pulse oximeters 100 and respiratory sensors 200 to multiple subjects, the multiple pulse oximeters 100 and respiratory sensors 200 may be mixed together, and the pairs of pulse oximeters 100 and respiratory sensors 200 may be mixed up and This is because the unringed respiratory sensor 200 may be packaged in combination with the pulse oximeter 100.

FIG. 6A is a ladder chart showing an example of the operations of the pulse oximeter 100 and the breathing sensor 200 during a pairing confirmation operation to confirm whether the breathing sensor 200 is paired with the pulse oximeter 100. FIG. 6B shows an example of a pairing confirmation screen displayed on display unit 118 during pairing confirmation work.

As shown in FIG. 6A, the control unit 150 of the pulse oximeter 100 determines whether a confirmation operation for confirming whether or not the breathing sensor 200 is paired with the operation reception unit 116 has been accepted. (Step S20). For example, if the operation reception unit 116 includes a button, the control unit 150 determines whether or not a button press operation by the operator is accepted.

If the control unit 150 determines that the confirmation operation has been accepted by the operation reception unit 116 (step S20: YES), the process proceeds to step S21. On the other hand, if the operation reception unit 116 determines that the confirmation operation has not been accepted (step S20: NO), the process returns to step S20.

Next, when the confirmation operation is accepted by the operation reception unit 116, the control unit 150 of the pulse oximeter 100 displays a pairing confirmation screen on the display unit 118 (step S21). For example, as shown in FIG. 6B, the display unit 118 displays the words "Confirm the breathing sensor being paired" and the button "Execute" as a pairing confirmation screen.

Next, the control unit 150 of the pulse oximeter 100 determines whether an execution operation for confirming pairing has been accepted by the operation reception unit 116 (step S22). For example, if the operation reception unit 116 includes a button, the control unit 150 determines whether or not a button press operation by the operator is accepted. Furthermore, if the display unit 118 is a touch panel, it is determined whether the "execute" button on the screen has been directly pressed.

When the control unit 150 determines that the execution operation has been accepted by the operation reception unit 116 (step S22: YES), the process proceeds to step S23. On the other hand, if the operation reception unit 116 determines that the execution operation has not been accepted (step S22: NO), the process returns to step S22.

Next, when the operation receiving unit 116 accepts the execution operation, the wireless communication unit 122 of the pulse oximeter 100 transmits a pairing confirmation signal as a request signal to the respiratory sensor 200 via wireless communication such as Bluetooth (registered trademark). (Step S23).

Next, the control unit 250 of the respiratory sensor 200 determines whether a pairing confirmation signal has been received by the wireless communication unit 222 (step S24). When the control unit 250 determines that the pairing confirmation signal has been received by the wireless communication unit 222 (step S24: YES), the process proceeds to step S25. On the other hand, when the control unit 250 of the respiratory sensor 200 determines that the pairing confirmation signal has not been received by the wireless communication unit 222 (step S24: NO), the process returns to step S24.

Next, when the control unit 250 of the breathing sensor 200 receives the pairing confirmation signal from the pulse oximeter 100, the control unit 250 of the breathing sensor 200 causes the notification unit 240 to notify the worker that the breathing sensor 200 is the paired breathing sensor 200. (step S25). For example, when the notification section 240 includes an LED, the control section 250 causes the LED to blink. Note that if the LED is off in the initial state, the LED may be turned on for a certain period of time, or if the LED is turned on in the initial state, the LED may be turned off for a certain period of time. Further, when the notification unit 240 includes a speaker, the speaker may notify the worker that the breathing sensor 200 is paired.

Furthermore, in the biological information measurement system 10, when the pairing between the pulse oximeter 100 and the breathing sensor 200 is completed, the time of the pulse oximeter 100 and the breathing sensor 200 is adjusted. Specifically, pulse oximeter 100 transmits a time set command (time data) to respiratory sensor 200 via short-range wireless communication. The respiratory sensor 200 receives the time set command transmitted from the pulse oximeter 100 and sets the time based on the received time set command. Thereby, the time of the respiratory sensor 200 can be synchronized with the time of the pulse oximeter 100.

In addition, at least one of the pulse oximeter 100 and the respiratory sensor 200 acquires and sets device information such as the device ID and passkey of the pairing partner at the time of pairing setup or before and after pairing setup. In addition, at least one of the pulse oximeter 100 and the respiratory sensor 200 stabilizes communication by checking the communication status such as the communication speed and radio field strength of short-range wireless communication when setting up pairing or before and after setting up pairing. ensure sex.

Further, when charging of at least one of the pulse oximeter 100 and the respiratory sensor 200 is completed, the operator may be notified that the charging is completed. For example, when charging of the breathing sensor 200 is completed, the notification unit 340 of the charger 300 changes the lighting color of the LED from red to green, or causes the LED to blink. In addition, the notification section 340
If it includes a speaker, it will output an audio message indicating that charging is complete. Even when charging of the pulse oximeter 100 is completed, the same lighting control and audio output as in the case of the breathing sensor 200 can be applied.

[Example of operation of pulse oximeter 100 and breathing sensor 200 during sleep apnea syndrome examination]
When the pulse oximeter 100 and breathing sensor 200 are mailed to the subject from a hospital, vendor, etc., the subject opens the package and takes out the pulse oximeter 100 and breathing sensor 200. Thereafter, at bedtime, a test for sleep apnea syndrome is performed by attaching the probe 160 of the pulse oximeter 100 to your fingertips, attaching the main body 110 to your wrist, and pasting the breathing sensor 200 near your throat.

FIG. 7 is a ladder chart showing an example of the operation of the pulse oximeter 100 and the breathing sensor 200 when testing for sleep apnea syndrome. It is assumed that the breathing sensor 200 is in sleep mode during the sleep apnea syndrome test.

As shown in FIG. 7, the control unit 150 of the pulse oximeter 100 determines whether the power is turned on (step S30). For example, if the operation reception unit 116 includes a button, the control unit 150 determines whether or not a long-press operation of the button by the subject is accepted. If the control unit 150 determines that the power is turned on (step S30: YES), the process proceeds to step S31. After the power of the pulse oximeter 100 is turned on and the subject goes to bed, the test for sleep apnea syndrome begins.

Next, when the power is turned on, the control unit 150 of the pulse oximeter 100 starts a measurement mode for measuring the blood oxygen saturation of the subject, and adjusts the blood oxygen saturation of the subject measured by the probe 160. The corresponding first measurement data is acquired (step S31). The control unit 150 stores the acquired first measurement data in the storage unit 120.

Next, the wireless communication unit 122 of the pulse oximeter 100 transmits an on signal indicating that the power of the pulse oximeter 100 is turned on to the paired breathing sensor 200 via wireless communication such as Bluetooth (registered trademark). Step S32).

Next, the wireless communication unit 222 of the respiratory sensor 200 receives the on signal transmitted from the paired pulse oximeter 100. When the control unit 250 receives the ON signal from the wireless communication unit 222, it returns from the sleep mode (step S33).

Next, upon returning from the sleep mode, the control unit 250 of the breathing sensor 200 starts a measurement mode for measuring the breathing state of the subject, and outputs second measurement data corresponding to the breathing state of the subject measured by the microphone 212. Acquire (step S34). In general, inhalation and exhalation are repeated at regular intervals, and the respiration rate of a healthy person is usually about 12 to 20 per minute, and the output corresponding to inhalation and exhalation is observed for about 3 to 5 seconds. Ru. On the other hand, apnea is defined as a cessation of breathing for 10 seconds or more, and hypopnea is defined as breathing that is shallower than normal. Therefore, it is preferable that the second measurement data be acquired once every second.

Next, the wireless communication unit 222 of the respiratory sensor 200 transmits the second measurement data according to the respiratory state of the subject acquired in the measurement mode to the paired pulse oximeter 100 via wireless communication such as Bluetooth (registered trademark). Transmit (step S35).

Next, the wireless communication unit 122 of the pulse oximeter 100 receives the second measurement data according to the breathing state of the subject transmitted from the wireless communication unit 222 of the respiratory sensor 200 (step S36). The control unit 150 stores the second measurement data received by the wireless communication unit 122 in the storage unit 120. For example, the control unit 150 stores the second measurement data in the storage unit 120 in association with the first measurement data, subject information (for example, ID, name, etc.), and time information indicating the time of measurement. Good too.

When the subject wakes up after a predetermined period of time has elapsed from the start of sleep, the power to the pulse oximeter 100 is turned off, and each measurement mode of the pulse oximeter 100 and the respiratory sensor 200 ends. Thereafter, the pulse oximeter 100 and the respiratory sensor 200 are repackaged by the subject and returned to the hospital or vendor. Note that the power may be kept on until the pulse oximeter 100 and the respiratory sensor 200 are no longer charged.

At the hospital or business, the pulse oximeter 100 returned from the subject is wired to a computer 400 via a communication cable 30, as shown in FIG. As a result, the first measurement data corresponding to the blood oxygen saturation level of the subject and the second measurement data corresponding to the breathing state of the subject stored in the storage unit 120 of the pulse oximeter 100 are transmitted via the communication cable 30. and is transmitted to the computer 400. The computer 400 analyzes the received first measurement data and second measurement data. For example, the computer 400 uses the first measurement data and the second measurement data to calculate the total number of apneas and hypopneas per hour of sleep, and classifies the severity of sleep apnea syndrome.

[Example of operation of pulse oximeter 100 and breathing sensor 200 during the next sleep apnea syndrome examination]
When testing the next subject using the pulse oximeter 100 and breathing sensor 200 returned by the subject, the pulse oximeter 100 and breathing sensor 200 have already been paired, so pairing is not necessary. This work becomes unnecessary. At this time, for example, if the breathing sensor 200 that is being paired breaks down and needs to be replaced with a new breathing sensor 200, the pulse oximeter 100 and the new breathing sensor 200 must be paired again. Settings are made. The control unit 150 of the pulse oximeter 100 performs the pairing settings for the new breathing sensor 200 as explained in FIG. 5A etc. above, and automatically cancels the pairing with the currently paired breathing sensor 200. do.

Note that the pairing method described above with reference to FIG. 5A and the like can also be applied when a patient is admitted to a hospital, clinic, etc. and tested for sleep apnea syndrome.

First, a nurse performs pairing between the pulse oximeter 100 and the respiratory sensor 200 at a nurse's station in the hospital. Specifically, steps S10 to S19 described with reference to FIG. 5A are performed. Next, the nurse hands the paired pulse oximeter 100 and respiratory sensor 200 to the subject waiting in the hospital room.

The subject wears the probe 160 of the pulse oximeter 100 on his fingertip and the main body 110 on his wrist. Furthermore, the microphone 212 of the breathing sensor 200 is attached near the throat. When the attachment of the pulse oximeter 100 and the respiratory sensor 200 is completed, each measurement mode is started. Subject goes to bed. After the scheduled time has elapsed, the nurse collects the pulse oximeter 100 and respiratory sensor 200 from the subject. The recovered pulse oximeter 100 is connected to the computer 400 via the communication cable 30, and biological information including the first measurement data and the second measurement data is transmitted to the computer 400 and analyzed.

According to the first embodiment, a one-to-one communication link can be established by pairing between the pulse oximeter 100 and the respiratory sensor 200, so the pulse oximeter 100 and the respiratory sensor 200 are connected. You can test for sleep apnea syndrome without using any cables. This makes it possible to prevent the pulse oximeter 100 and respiratory sensor 200 from shifting or coming off the measurement site when testing for sleep apnea syndrome, making it possible to more reliably acquire the subject's biological information. .

Further, according to the first embodiment, when the respiration sensor 200 is attached to the charger 300 or when a predetermined operation is accepted by the operation reception unit 316 of the charger 300, the respiration sensor 200 is paired. Since the respiration sensor 200 is controlled to change to the mode, there is no need to provide an operation receiving unit such as a button on the respiration sensor 200. Since the charger 300 can be used to charge multiple respiratory sensors 200, etc., even if the operation reception section 316 is provided on the charger 300 side, the cost is lower than when an operation reception section is provided for each respiratory sensor 200. can be achieved. Further, it is possible to prevent erroneous operations such as the subject pressing a button by mistake.

Further, according to the first embodiment, by providing the notification unit 240 in the respiratory sensor 200, it is possible to reconfirm the respiratory sensor 200 that is paired with the pulse oximeter 100. This can prevent the unpaired respiratory sensor 200 and pulse oximeter 100 from being combined and mailed to the subject by mistake.

Further, according to the first embodiment, even when testing multiple subjects for sleep apnea syndrome in a hospital, pairing is performed between the pulse oximeter 100 and the breathing sensor 200. Since a device is used, even if the respiratory sensor 200 of an unpaired subject is mistakenly used, measurement data of the unpaired respiratory sensor 200 can be prevented from being received by the pulse oximeter 100. This makes it possible to accurately manage biological information for each subject.

<Second embodiment>
The second embodiment differs from the first embodiment in that the operation of transitioning the pulse oximeter 100 to pairing mode is performed on the pulse oximeter 100 side. Note that, in the second embodiment, regarding configurations and operations that are common to the first embodiment, redundant explanations will be omitted by quoting the description of the first embodiment.

In the second embodiment, the pulse oximeter 100 has a built-in battery as the power supply section 124, and each section is configured to be driven by the power of the battery. Therefore, the pulse oximeter 100 does not need to receive power from the charger 300, so the pulse oximeter 100 alone can be paired with the respiratory sensor 200 without being connected to the charger 300 by wire. I can do it. Note that if the pulse oximeter 100 is configured not to use the charger 300, the first interface 330 of the charger 300 shown in FIG. 4 is not essential.

Next, an example of the operation of the biological information measurement system 10 at the time of pairing setting according to the second embodiment will be described. FIG. 8 is a ladder chart showing an example of the operation of the biological information measurement system 10 when pairing is performed between the pulse oximeter 100 and the respiratory sensor 200 according to the second embodiment. Note that the respiratory sensor 200 operates in a sleep mode or only performs short-term reception operations except during the measurement period specified by the pulse oximeter 100.

Control unit 350 of charger 300 determines whether respiratory sensor 200 is attached to attachment unit 302 (step S40). When the control unit 350 of the charger 300 determines that the respiration sensor 200 is attached to the attachment unit 302 (step S40: YES), the process proceeds to step S41. In this case, charging of the breathing sensor 200 is also started. On the other hand, if it is determined that the respiratory sensor 200 is not attached to the attachment part 302 (step S40: NO), the process of step S40 is repeated.

Next, the control unit 350 of the charger 300 determines whether a pairing setting operation for transitioning the breathing sensor 200 to the pairing mode has been accepted by the operation reception unit 316 (step S41). Specifically, if the operation reception unit 316 includes a button, the determination is made based on whether the button has been pressed by the operator.

When the control unit 350 of the charger 300 determines that the pairing setting operation has been accepted by the operation reception unit 316 (step S41: YES), the process proceeds to step S42. On the other hand, if the operation accepting unit 316 determines that the pairing setting operation is not accepted (step S41: NO), the process returns to step S41.

When the pairing setting operation is accepted by the operation reception unit 316, the control unit 350 of the charger 300 outputs a pairing mode transition signal to the respiratory sensor 200 for transitioning the respiratory sensor 200 to the pairing mode (step S42 ).

Next, upon receiving the pairing mode transition signal via the interface 230, the control unit 250 of the respiratory sensor 200 transitions from the sleep mode to the pairing mode (step S43). In other words, the respiratory sensor 200 transitions to a standby mode in which it can accept pairing requests from other information devices.

Next, the control unit 150 of the pulse oximeter 100 determines whether a pairing setting operation (input operation) for transitioning to the pairing mode has been accepted by the operation reception unit 116 (step S44). Specifically, if the operation reception unit 116 includes a button, the determination is made based on whether the button has been pressed by the operator. If the operation accepting unit 116 determines that the pairing setting operation for transitioning to the pairing mode has not been accepted (step S44: NO), the process of step S44 is repeated.

On the other hand, when the control unit 150 of the pulse oximeter 100 determines that the pairing setting operation has been accepted by the operation reception unit 116, the control unit 150 shifts to the pairing mode and starts the pairing operation (step S45). For example, when the control unit 150 transitions to the pairing mode, the control unit 150 searches for nearby information devices that are within the range of short-range wireless communication and that have transitioned to the pairing mode, and searches for the model name of the information device detected by the search. , model number, etc. are displayed on the screen of the display unit 118. If there are multiple information devices that can be paired around the pulse oximeter 100, the model names and the like of the multiple information devices are displayed on the screen of the display unit 118.

Next, the control unit 150 of the pulse oximeter 100 determines whether a selection operation for selecting the pairing partner breathing sensor 200 has been performed in the operation reception unit 116 (step S46). Specifically, if the operation reception unit 116 includes a button, the determination is made based on whether the model name, etc. of the breathing sensor 200 that is the pairing partner displayed on the screen is selected by the operator by pressing the button. . In addition, when the operation reception unit 116 includes a touch panel, the determination is made based on whether or not the model name of the pairing partner breathing sensor 200 displayed on the screen of the display unit 118 has been touched.

If the control unit 150 determines that a selection operation for selecting the breathing sensor 200 to be a pairing partner has been performed (step S46: YES), the process proceeds to step S47. On the other hand, if it is determined that the selection operation for selecting the breathing sensor 200 to be the pairing partner has not been performed (step S46: NO), the process of step S46 is repeated.

Next, the wireless communication unit 122 of the pulse oximeter 100 wirelessly transmits a pairing signal for establishing pairing to the pairing partner respiratory sensor 200 selected by the operation reception unit 116 ( Step S47). The pairing signal also includes, for example, identification information of the pulse oximeter 100.

Next, the wireless communication unit 222 of the respiratory sensor 200 receives the pairing signal transmitted from the pulse oximeter 100. The control unit 250 authenticates the pulse oximeter 100 as a pairing partner based on the pairing signal received by the wireless communication unit 222, and establishes a pairing (one-to-one communication link) with the pulse oximeter 100. (Step S48).

Note that in the embodiment described above, the respiratory sensor 200 is first transitioned to the pairing mode, and then the pulse oximeter 100 is transitioned to the pairing mode, but the transition order may be reversed, and the pulse oximeter 100 is transitioned to the pairing mode. The oximeter 100 may be transitioned to pairing mode before the respiratory sensor 200.

The second embodiment can also provide the same effects as the first embodiment. Specifically, according to the second embodiment, a one-to-one communication link can be established by pairing between the pulse oximeter 100 and the respiratory sensor 200. A test for sleep apnea syndrome can be performed without using a cable for connecting to the sensor 200. This makes it possible to prevent the pulse oximeter 100 and respiratory sensor 200 from shifting or coming off the measurement site when testing for sleep apnea syndrome, making it possible to more reliably acquire the subject's biological information. .

Furthermore, according to the second embodiment, since the pulse oximeter 100 is driven by a battery, there is no need to connect it to the charger 300 by wire using the charging cable 20 for charging. Thereby, the pairing setting between the pulse oximeter 100 and the breathing sensor 200 can be performed without using the charging cable 20 and without wiring, so that work efficiency can be improved.

Although the embodiment of the present disclosure has been described above in detail with reference to the drawings, the specific configuration is not limited to this embodiment, and includes designs within the scope of the gist of the present disclosure. Further, the effects described in this specification are merely examples and are not limited, and other effects may also be present. For example, in the first embodiment, an example has been described in which the main body 110 and the probe 160 of the pulse oximeter 100 are configured separately, but the main body 110 and the probe 160 are configured integrally. It may be composed of In this case, each function of the main body 110 can be built into the probe 160 side.

10 Biological information measurement system 100 Pulse oximeter 116 Operation reception section 120 Storage section 122 Wireless communication section (communication section)
124 Power supply section 130 Interface 150 Control section 160 Probe (measurement section)
200 Breathing sensor 240 Notification section 300 Charger 316 Operation reception section 350 Control section

Claims (15)

a measurement unit that measures the blood oxygen saturation of the subject;
a communication unit that performs wireless communication with a breathing sensor that measures the breathing state of the subject;
a control unit that performs pairing with one of the respiratory sensors capable of wireless communication by the communication unit;
Pulse oximeter with. power supply section,
an interface connectable via a charging cable to at least a charger that charges the power supply unit;
The control unit includes:
When the interface is connected to the charger via the charging cable, and when a pairing setting operation for pairing with a respiratory sensor is accepted in the charger, the interface is connected to the charger via the charging cable. performing a pairing operation for pairing with the respiratory sensor based on the supplied pairing setting operation;
The pulse oximeter according to claim 1. comprising a storage unit that stores first measurement data corresponding to the blood oxygen saturation of the subject measured by the measurement unit,
The communication unit receives second measurement data according to the breathing state of the subject measured by the paired breathing sensor,
the storage unit stores the second measurement data received by the communication unit;
The pulse oximeter according to claim 1. comprising an operation reception unit that accepts a confirmation operation to confirm whether or not the breathing sensor is paired;
The control unit includes:
When the confirmation operation is accepted by the operation receiving unit, causing the communication unit to transmit a request signal to the breathing sensor to notify that the breathing sensor is paired.
The pulse oximeter according to claim 1. The control unit includes:
When pairing is performed with a respiratory sensor different from the paired respiratory sensor, canceling the pairing with the previously paired respiratory sensor;
The pulse oximeter according to claim 1. Equipped with an operation reception section that accepts input operations for pairing operations,
The pulse oximeter according to claim 1, wherein the control unit starts a pairing operation for pairing with the respiratory sensor when the input operation is accepted by the operation reception unit. A respiratory sensor that measures the respiratory state of a subject; and a pulse oximeter according to any one of claims 1 to 6.
A biological information measurement system equipped with The respiration sensor includes:
comprising a notification unit for notifying that the breathing sensor is paired with the pulse oximeter,
When the notification unit receives a request signal requesting notification that the breathing sensor is paired with the pulse oximeter, the notification unit determines whether the notification unit is paired with the pulse oximeter based on the request signal. informing that the breathing sensor is present;
The biological information measurement system according to claim 7. The notification section includes a light emitting section that lights up or blinks.
The biological information measurement system according to claim 8. The notification unit includes a speaker that outputs audio.
The biological information measurement system according to claim 8. At least a charger for charging the pulse oximeter,
The charger includes:
an operation reception unit that receives a pairing operation instruction for pairing the pulse oximeter;
a control unit that causes the pulse oximeter to perform a pairing operation when the operation reception unit receives the pairing operation instruction and the pulse oximeter is connected to the charger;
The biological information measurement system according to claim 7, comprising: At least a charger for charging the respiration sensor,
The charger includes:
an operation reception unit that receives a pairing operation instruction for pairing the respiratory sensor;
a control unit that causes the respiration sensor to perform a pairing operation when the operation reception unit receives the pairing operation instruction and the respiration sensor is connected to the charger;
The biological information measurement system according to claim 7, comprising: The respiration sensor has a secondary battery that is charged by the charger.
The biological information measurement system according to claim 12. performing at least one of adjusting the time between the pulse oximeter and the respiration sensor, setting device information, and checking the communication state;
The biological information measurement system according to claim 7. to the computer,
A function that allows the measurement unit to measure the blood oxygen saturation of the subject,
A function that performs wireless communication with a breathing sensor that measures the breathing state of the subject,
A function of pairing with one of the respiratory sensors capable of wireless communication;
A program to make this happen.

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