JP2013111202A - Pulse oximeter for recording measurement situation - Google Patents

Abstract

PROBLEM TO BE SOLVED: To clarify change in oxygen saturation due to difference of living situations, activities or subjective symptoms.SOLUTION: A portable information terminal 300 for connecting a pulse oximeter 302 is provided. The portable information terminal 300 includes: a connection part 304, connected to the pulse oximeter 302, for acquiring measurement data including the oxygen saturation; a monitor 104; a clock part 106 for calculating time data including the year, month, date and time; a recording part 108 for recording the measurement data; a selective input part 110 for allowing a user to select and input the living situation, activity or subjective symptom of a subject when measuring the oxygen saturation; a data processing part 112 for, when the user inputs the living situation, activity or subjective symptom of the subject in the selective input part 110, linking situation data including the living situation, activity or subjective symptom with the measurement data and the time data when it is input and recording them in the recording part; and a measurement value display part 114 for causing the monitor to display the measurement value of the oxygen saturation.

Description

  The present invention relates to a pulse oximeter for recording measurement conditions, a portable information terminal for connecting a pulse oximeter, and a program for connecting and using a portable information terminal with a pulse oximeter.

  Home oxygen therapy has the advantage that patients with chronic respiratory failure who need oxygen inhalation can be treated at home, and is an important treatment that can improve the patient's quality of life (QOL). About 140,000 patients are receiving home oxygen therapy. Home oxygen therapy is applied not only to chronic respiratory failure due to chronic respiratory disease, but also to pulmonary hypertension, cyanotic congenital heart disease, and chronic heart failure combined with Chain Stokes breathing.

  The majority of patients use an oxygen concentrator, but the oxygen concentrator used for home oxygen therapy is operating normally, is used properly according to the doctor's prescription oxygen flow rate, or once prescribed Whether or not is appropriate in various patient situations is largely based on the patient's self-report, and there is almost no objective evaluation method.

  Usually, at the time of oxygen inhalation, oxygen saturation is self-measured with a pulse oximeter at home (see, for example, Patent Documents 1 and 2). Some systems including a pulse oximeter and a touch panel monitor have been proposed (see, for example, Patent Documents 3 and 4).

JP-A-8-266522 JP 2010-194306 A JP-A-2005-411 JP 2010-246894 A

However, the prior art described in the above literature has room for improvement in the following points.
First, there is a possibility that the patient is in a hypoxic state unexpectedly in the daily life of the patient. Oxygen inhalation is often administered via a nasal cannula, and when you swallow things during meals, inhalation of oxygen from the nose is insufficient in addition to breath holding. In addition, breathing more than expected may be performed during defecation. If you are in the bath, breathing may be restricted by water pressure in the bathtub.

  Secondly, the touch panel type monitor of Patent Document 3 is provided for the operation of an electric gage bed, and is not used for the operation of a pulse oximeter. Further, in Patent Document 4, since the function of the pulse oximeter is incorporated in the touch screen interface itself, the fingertip is not fixed well, so the measurement accuracy of the pulse oximeter may be lowered. Costs can be expensive.

  This invention is made | formed in view of the said situation, and aims at clarifying the change of the oxygen saturation by the difference in a living condition, activity, or a subjective symptom.

  Further, according to the present invention, a portable information terminal for connecting a pulse oximeter, which is connected to the pulse oximeter to acquire measurement data including oxygen saturation, a monitor, a date, a date and time A clock unit that calculates time data including a recording unit, a recording unit that records measurement data, and a selection input that allows the user to select and input the living situation, activity, or subjective symptoms of the subject at the time of measuring the oxygen saturation And the user inputs the life status, activity or subjective symptom of the subject at the selection input unit, the situation data including the life status, activity or subjective symptom is linked to the measurement data and the time data at the time of the input. There is provided a portable information terminal comprising a data processing unit for recording in a recording unit and a measured value display unit for displaying a measured value of the oxygen saturation on the monitor.

  If this portable information terminal is used connected to a commercially available pulse oximeter, it is possible to clarify changes in oxygen saturation due to differences in living conditions, activities, or subjective symptoms. Therefore, medical personnel such as doctors and nurses can finely change the flow rate of oxygen gas from the oxygen concentrator based on the record.

  According to the present invention, there is provided a pulse oximeter that measures oxygen saturation of arterial blood and generates measurement data including the oxygen saturation, a monitor, and time data including date and time. A clock unit to calculate, a recording unit to record measurement data, a selection input unit by which the user can select and input the living situation, activity or subjective symptoms of the subject at the time of measuring the oxygen saturation, and the user When the subject's life situation, activity, or subjective symptom is input in the selection input unit, the situation data including the life situation, activity, or subjective symptom is linked to the measurement data and the time data at the time of input and recorded in the recording unit. There is provided a pulse oximeter comprising a data processing unit that performs measurement and a measurement value display unit that displays a measurement value of the oxygen saturation on the monitor.

  Even when this pulse oximeter is used alone, changes in oxygen saturation due to differences in living conditions, activities or subjective symptoms can be clarified. Therefore, medical personnel such as doctors and nurses can finely change the flow rate of oxygen gas from the oxygen concentrator based on the record.

  According to the present invention, there is also provided a program for connecting a portable information terminal to a pulse oximeter and using the portable information terminal by connecting the portable information terminal to the pulse oximeter to obtain measurement data including oxygen saturation. Connection unit, monitor, clock unit that calculates time data including date, time, recording unit that records measurement data, user selects the living situation, activity or subjective symptoms of the subject when measuring the oxygen saturation When the user inputs the life status, activity or subjective symptom of the subject with the selection input unit, the measurement data at the time of the input can be obtained. It functions as a data processing unit that records data and its time data in a recording unit in association with the data, and a measured value display unit that displays the measured value of oxygen saturation on the monitor. Because of the program for the portable information terminal is provided.

  If this program is installed and used in a commercially available portable information terminal connected to a commercially available pulse oximeter, it is possible to clarify changes in oxygen saturation due to differences in living conditions, activities or subjective symptoms. Therefore, medical personnel such as doctors and nurses can finely change the flow rate of oxygen gas from the oxygen concentrator based on the record.

  According to the present invention, it is possible to clarify changes in oxygen saturation due to differences in living conditions, activities, or subjective symptoms.

It is the conceptual diagram which showed the structure of the portable information terminal with a touchscreen monitor which concerns on Embodiment 1 (it connects with the pulse oximeter by wire). 1 is a functional block diagram showing an overall configuration of a portable information terminal with a touch panel monitor according to Embodiment 1. FIG. 4 is a flowchart for explaining the operation of the portable information terminal with a touch panel monitor according to the first embodiment. It is the conceptual diagram which showed the structure of the pulse oximeter with a physical button which concerns on Embodiment 2. FIG. FIG. 5 is a functional block diagram illustrating a configuration of a pulse oximeter with a physical button according to a second embodiment. 6 is a flowchart for explaining an operation of a pulse oximeter with a physical button according to the second embodiment. FIG. 10 is a functional block diagram illustrating an overall configuration of a pulse oximeter integrated with a touch panel monitor according to a modification of the second embodiment. 10 is a flowchart for explaining an operation of a pulse oximeter integrated with a touch panel monitor according to a modification of the second embodiment. It is a graph which shows the experimental result about the oxygen saturation change by the living condition in an Example. It is a graph which shows the experimental result about the life condition and pulse in an Example.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same reference numerals are given to the same components, and the description will be omitted as appropriate.

<Embodiment 1>
FIG. 1 is a conceptual diagram showing a configuration of a portable information terminal with a touch panel monitor according to Embodiment 1 (connected to a pulse oximeter by wire). As shown in this figure, the portable information terminal according to the present embodiment is a portable information terminal with a touch panel monitor connected to a commercially available general pulse oximeter in a wired manner. In this portable information terminal, when the patient self-measures the oxygen saturation and touches the touch panel, the measurement data and the date / time, time, and life situation information are automatically recorded. In this portable information terminal, the screen of the touch panel (life situation / activity item / character size, etc.) is set so that it can be freely changed.

  Therefore, if this portable information terminal is used connected to a commercially available pulse oximeter, it is possible to clarify changes in oxygen saturation due to differences in living conditions, activities or subjective symptoms. Therefore, medical personnel such as doctors and nurses can finely change the flow rate of oxygen gas from the oxygen concentrator based on the record.

Hereinafter, the configuration of the present embodiment will be described.
FIG. 2 is a functional block diagram showing the overall configuration of the portable information terminal with a touch panel monitor according to the first embodiment. A portable information terminal 300 with a touch panel monitor 104 according to the present embodiment is a portable information terminal with a touch panel monitor 104 for connecting to a commercially available general pulse oximeter 302 by wire. A personal digital assistant 300 with a touch panel monitor 104 includes a computer that is small and light enough to be held in a hand having the touch panel monitor 104. As the portable information terminal 300 with the touch panel monitor 104, for example, a commercially available smartphone, a commercially available tablet terminal, or the like can be suitably used. Even if it is a commercially available product, if the software for this embodiment is installed, it can be connected to the pulse oximeter 302 to exhibit a desired function. Of course, these may not be commercially available, and a portable information terminal 300 with a touch panel monitor 104 having custom-made hardware or software may be used.

The pulse oximeter 302 (pulse oximeter) includes a medical device that attaches a probe to a fingertip or an ear and monitors the pulse rate and percutaneous arterial oxygen saturation (SpO ₂ ) without invasion. Examples of the pulse oximeter 302 include those that can record the monitor result in a built-in memory and those that are small like a wristwatch. For example, the International Organization for Standardization (ISO) defines ISO9919: 2005 “Specific Requirements for Basic Safety and Essential Performance of Medical Pulse Oximeters” as a standard for pulse oximeters. An oximeter 302 or the like can be preferably used.

The portable information terminal 300 includes a connection unit 304. The connection unit 304 is connected to the pulse oximeter 302 to acquire measurement data including oxygen saturation (percutaneous arterial blood oxygen saturation (SpO ₂ )). It is preferable that this connection unit 304 can acquire measurement data including the pulse rate of arterial blood. The connection unit 304 may be a module that enables wired communication or wireless communication between the pulse oximeter 302 and the portable information terminal 300. For example, a USB port can be used as the connection unit 304 when performing wired communication. The connection unit 304 can use, for example, an IEEE802.11 wireless communication module when performing wireless communication. In any case, it is preferable that the pulse oximeter 302 and the portable information terminal 300 are connected to each other according to the same standard.

  The portable information terminal 300 includes a touch panel monitor 104. A touch panel includes an electronic device that combines a display device such as a liquid crystal panel and a position input device such as a touch pad, and includes an input device that operates a device by pressing a display on a screen. As a touch panel system, any system such as a resistive film system, a surface acoustic wave system, an infrared system, an electromagnetic induction system, and a capacitance system can be used.

  The portable information terminal 300 includes a clock unit 106. The clock unit 106 calculates time data including the date and time. As the timepiece unit 106, for example, a quartz timepiece (crystal oscillation type) or the like can be used. The clock unit 106 has a network time protocol function, and it is preferable that the clock of the device can be synchronized with the correct time via the Internet. The clock unit 106 displays an instruction for prompting the user to measure the oxygen saturation level of arterial blood periodically at a predetermined time on the touch panel monitor 104 or outputs a voice through the voice input / output unit 116. At this time, the clock unit 106 displays on the touch panel monitor 104 an instruction that prompts the user to input the life status, activity, or subjective symptom of the subject.

  The clock unit 106 may have a function of issuing an instruction to the connection unit 304 through the data processing unit 112 so that the measurement data is automatically recorded in the recording unit 108 periodically at a predetermined time. When the measurement with the time setting is also possible as described above, the measurement is prompted by the sound from the sound input / output unit 116. In this way, since measurement data can be automatically recorded periodically, it is possible to save the trouble of the patient himself. For example, the clock unit 106 instructs the connection unit 304 through the data processing unit 112 to “measure for 3 days until waking up in the morning and goes to sleep” so that the data measured continuously can be grasped. . In this way, there is an advantage that it is possible to grasp what kind of daily activities and the time zone in which the oxygen saturation is reduced in the flow of the day.

  The portable information terminal 300 includes a recording unit 108. The recording unit 108 records measurement data including a measurement value of oxygen saturation acquired from the pulse oximeter 302 through the connection unit 304. This measurement data includes life data, situation data including activities or subjective symptoms, time data including date and time, or personal data of subjects (patients) (name, age, sex, weight, carefulness, blood Type, disease name, hospital name, etc.) may be linked and recorded. A pulse rate measurement may be included. Further, for this measurement data, a built-in hard disk, flash memory, or the like can be used as the recording unit 108 described later. As the recording unit 108, an external memory such as an SD card inserted into the portable information terminal 300 may be used.

  As a modified example of the present embodiment, the recording unit 108 may be a volatile memory such as a DRAM that performs temporary storage or a CPU cache. In that case, it is preferable that the measurement data in the volatile memory is automatically transmitted directly to a recording medium that is automatically prepared separately using, for example, near field communication (Blue tooth (registered trademark)). If the data can be recorded in a removable flash memory such as an SD card inserted in the built-in slot of the pulse oximeter 302, the patient can also print out the measurement results by himself / herself. Can also be used for.

  The portable information terminal 300 includes a selection input unit 110. Using this selection input unit 110, the user can select and input the living situation, activity or subjective symptom of the subject at the time of measuring the oxygen saturation. The user may be the same person as the subject or patient, or may be another person. The selection input unit 110 is preferably a plurality of icons displayed on the touch panel monitor. Moreover, it is preferable that this selection input part 110 is comprised from two or more types of choices chosen from the group which consists of rest, a meal, a toilet, walking, changing clothes, and a bath. In this portable information terminal 300, when the patient self-measures the oxygen saturation with the pulse oximeter 302 and touches the selection input unit 110 displayed on the touch panel monitor 104, the data processing unit 112 automatically starts the pulse oximeter 302. Measurement data and date / time / time / life situation information are acquired through the connection unit 304 and recorded in the recording unit 108.

  Further, in this portable information terminal 300, the display contents (life conditions, activity items, character size (design), etc.) of the selection input unit 110 on the screen of the touch panel type monitor 104 depend on the age and understanding of the patient. It is set to be selectable and freely changeable. That is, in this portable information terminal 300, it is preferable that the setting items for daily activities can be easily changed by a program. In addition, the personal digital assistant 300 is set so as to be able to record the degree of subjective symptoms such as the degree of shortness of breath “very tight” and “tight” along with the life activity. As described above, it is desirable that whether or not to input subjective symptoms can be easily changed by a program.

  The portable information terminal 300 includes a data processing unit 112. When the user inputs the life status, activity, or subjective symptom of the subject using the selection input unit 110, the data processing unit 112 associates the status data including the life status, activity, or subjective symptom with the measurement data and time data at the time of input. To the recording unit 108. At this time, the data processing unit 112 further associates personal data (name, age, sex, weight, carefulness, blood type, disease name, hospital name) of the subject (patient) with the measurement data. It may be recorded. The data processing unit 112 can use, for example, a relational database, a card-type database, or the like as a method for linking these data.

  The portable information terminal 300 includes a measurement value display unit 114. The measurement value display unit 114 is connected to the pulse oximeter 302 and displays the measurement value of the oxygen saturation acquired through the connection unit 304 on the touch panel monitor 104. The measurement value display unit 114 is preferably configured to display the measurement value of arterial blood pulse on the touch panel monitor 104. In addition to the oxygen saturation or pulse rate, the measurement value display unit 114 includes life data, activity data or status data including subjective symptoms linked to the measurement data by the data processing unit 112, date and time. Information such as time data or personal data (name, age, sex, weight, carefulness, blood type, disease name, hospital name) of the subject (patient) may also be displayed.

  This portable information terminal 300 includes an alarm unit 118. The alarm unit 118 compares the measured value of the oxygen saturation with a predetermined numerical range, and outputs an alarm when it is determined that the oxygen saturation is not within the predetermined numerical range. This alarm unit 118 is a touch panel type instruction that prompts the user to input whether the situation is (1) no physical condition, (2) tired but no problem, or (3) hard to ask for help. A sound is output to the monitor 104 through the display or audio input / output unit 116. And this alarm part 118 is (a) mail address of predetermined emergency contact, when a fixed time passes without a user inputting (1) or (2), or when a user inputs (3) Send an e-mail to (b) Call a predetermined emergency contact phone number to play a message, or (c) Sound a loud alarm.

  In this way, when the oxygen saturation value of the pulse oximeter 302 continuously shows a dangerous value (life activity and its dangerous value, the number of times when the dangerous value is continuously measured, etc. can be set) ) Can be determined that an unexpected hypoxic state (or rarely a high oxygen state) has occurred, and the above operations (a), (b), (c) are performed, or a doctor appears on the screen. Or a screen that prompts you to contact the visiting nursing station is displayed. Or you may make it prompt to contact a doctor or a visiting nursing station by voice. By doing so, early detection of exacerbations and the like becomes possible.

  This portable information terminal 300 includes an RFID reader 120. The RFID reader 120 detects RFID installed at a predetermined external position, and the current position of the portable information terminal 300 is selected from the group consisting of a bedroom, a kitchen, a toilet, the outdoors, a dressing room, and a bath. It can be determined which of the locations. When the RFID reader 120 determines that the current position of the portable information terminal 300 is one of two or more places selected from the group consisting of a bedroom, a kitchen, a toilet, the outdoors, a dressing room, and a bath, An instruction for prompting to measure the oxygen saturation of arterial blood is displayed on the touch panel monitor 104 or outputted through the voice input / output unit 116 as voice. At this time, it is preferable that the data processing unit 112 records the current position of the portable information terminal 300 in the recording unit 108 in association with the measurement data and the time data.

  Alternatively, instead of RFID, a transmitter for short distance communication (Blue tooth (registered trademark)) is installed in advance for each location, and a receiver is built in the pulse oximeter 302. If the patient measures, location information is automatically obtained. It may be a recording system. In this case, a wireless module compatible with near field communication (Blue tooth (registered trademark)) may be mounted instead of the RFID reader 120.

  This portable information terminal 300 includes an A-GPS receiver 122. The A-GPS receiver 122 can receive radio waves from GPS satellites and mobile phone base stations and determine the current position of the portable information terminal 300. The portable information terminal 300 may include a GPS receiver instead of the A-GPS receiver 122. In this case, the GPS receiver can receive the radio wave from the GPS satellite and determine the current position of the portable information terminal 300.

  The GPS receiver or the A-GPS receiver 122 has moved at least a K meter (K can be arbitrarily determined by a constant, for example, K = 500 meters) where the current position of the portable information terminal 300 is a predetermined distance. If it is determined, the instruction for prompting the user to measure the oxygen saturation level of arterial blood is displayed on the touch panel monitor 104 or outputted through the voice input / output unit 116 as voice. In this case, the GPS receiver or A-GPS receiver 122 is a touch panel type that can select two or more types of moving means selected from the group consisting of walking, bicycle, wheelchair, bus, taxi, automobile, train, ship, and airplane. Displayed on the monitor 104. At this time, it is preferable that the data processing unit 112 records the current position and moving means of the portable information terminal 300 in the recording unit in association with the measurement data and time data.

  The portable information terminal 300 includes a network communication unit 124. The net communication unit 124 transmits data in the recording unit 108 to a server of a medical institution or a private company through an Internet line. The network communication unit 124 may be a LAN port or a wireless module for connecting to an external Internet line by wire or wirelessly.

Hereinafter, operations and effects of the present embodiment will be described.
FIG. 3 is a flowchart for explaining the operation of the portable information terminal with the touch panel monitor according to the first embodiment. As shown in this figure, when a portable information terminal 300 with a touch panel monitor is turned on to start a series of operations, a clock unit 106 built in the portable information terminal 300 confirms the current time and determines a predetermined time. It is determined whether the time has been reached (S102). If the predetermined time has not been reached, the clock unit 106 waits until the predetermined time is reached. On the other hand, the clock unit 106 displays an instruction to prompt the user to measure the oxygen saturation level of arterial blood on the touch panel monitor 104 or voice through the voice input / output unit 116 when the predetermined time has been reached. Output (S104). At this time, the clock unit 106 transmits a signal for causing the touch panel monitor 104 to display an instruction for prompting the user to input the living state, activity or subjective symptom of the subject.

  When the user measures the oxygen saturation and pulse rate of arterial blood using the pulse oximeter 302, the measurement data is automatically transmitted to the data processing unit 112 through the connection unit 304 (S106). Then, the data processing unit 112 passes the measurement data to the alarm unit 118. The alarm unit 118 checks whether or not the oxygen saturation included in the measurement data is within a predetermined numerical range (S108). When the alarm unit 118 determines that the oxygen saturation is within the predetermined numerical range. Then, a signal prompting the status input transmitted by the clock unit 106 is directly sent to the selection input unit 110 to display the options (S116).

  On the other hand, if the alarm unit 118 determines that the oxygen saturation is outside the predetermined numerical range, any one of (1) no problem with physical condition, (2) no problem with tiredness, (3) it is difficult to help An instruction for prompting the user to input whether or not the situation is present is displayed on the touch panel monitor 104 or outputted through the voice input / output unit 116 (S110). Then, the alarm unit 118 determines whether the user inputs (1), (2), (3) or no answer (S112). The alarm unit 118 makes an emergency call when a predetermined time has elapsed without the user inputting (1) or (2) or when the user inputs (3) (S110), and the series of operations is terminated. .

  On the other hand, when the user inputs (1) or (2), the alarm unit 118 causes the selection input unit 110 to display a choice by sending a signal prompting the situation input transmitted by the clock unit 106 (S116). . Then, when the user inputs situation data selected from rest, meal, toilet, walking, change of clothes, bath, etc., to the selection input unit 110, the data processing unit 112 links the measurement data and time data at the time of input. Recording is performed in the recording unit 108 (S118).

  Thereafter, the measured value display unit 114 displays the measured values of the oxygen saturation and the pulse rate on the touch panel monitor 104 (S120). Then, the network communication unit 124 transmits the data in the recording unit 108 to the server of the medical institution or private company through the Internet line (S122), and ends the series of operations.

  As described above, the portable information terminal 300 with the touch panel type monitor 104 according to the present embodiment is obtained by attaching the touch panel type monitor 104 to the portable information terminal 300 connected to the pulse oximeter 302. This portable information terminal 300 clearly indicates “meal”, “toilet”, “change of clothes”, “bathing”, “rest”, etc. as the selection input unit 110 on the screen of the touch panel monitor 104. When the user touches the screen of the touch panel type monitor 104 according to the living situation / activity, measurement data including oxygen saturation is automatically acquired from the pulse oximeter 302 through the connection unit 304. Then, additional information such as time and place is associated with the measurement data including the obtained oxygen saturation and recorded in the recording unit 108.

  As a result, in this portable information terminal 300, the patient who performs home therapy using the pulse oximeter 302 knows the value of oxygen saturation corresponding to each daily operation, its temporal change, and their relative fluctuations. It is possible to improve the quality of life of patients. In this portable information terminal 300, the value of the oxygen saturation of the patient or the variation thereof can be confirmed in real time at the doctor or nurse station, so that it can be expected that the patient's anxiety is reduced.

The portable information terminal 300 is a device independent of the main body of the pulse oximeter 302, and can be used by installing a dedicated program on a commercially available portable information terminal. Therefore, there is an advantage that the economic burden of a patient who performs home oxygen therapy (or a medical institution or medical device manufacturer that lends a device for home oxygen therapy to the patient) can be reduced. Moreover, since commercially available personal digital assistants and dedicated programs themselves are not medical devices, it is also a great advantage that it is not necessary to obtain approval from medical regulatory authorities in many countries.
<Embodiment 2>
FIG. 4 is a conceptual diagram showing a configuration of a pulse oximeter with a physical button integrated with a monitor according to the second embodiment. As shown in this figure, the pulse oximeter with physical buttons according to this embodiment is a conventional pulse oximeter in which buttons for living conditions are installed in advance. Using this pulse oximeter with physical buttons, when the patient self-measures the oxygen saturation, the measurement data and the date, time, and button information are automatically recorded when the button is pushed.

  FIG. 5 is a functional block diagram illustrating a configuration of a pulse oximeter with a physical button according to the second embodiment. The pulse oximeter 200 of the present embodiment has the same configuration and operational effects as the portable information terminal 300 of the first embodiment except that the pulse oximeter 200 with the physical button 210 is used.

Hereinafter, a configuration unique to the pulse oximeter 200 of the present embodiment will be described.
Unlike the first embodiment, the pulse oximeter 200 does not require the monitor 104 to be a touch panel type. That is, as the monitor 104, a simple liquid crystal monitor, an organic EL monitor, an LED monitor or the like that is not a touch panel type can be used. Therefore, an inexpensive monitor can be used as compared with a touch panel monitor.

  Further, the pulse oximeter 200 includes a measurement unit 102 instead of the connection unit 304 in the first embodiment. The measurement unit 102 measures the oxygen saturation of arterial blood and generates measurement data including the oxygen saturation. The measurement unit 102 is preferably a fingertip measurement type.

  FIG. 6 is a flowchart for explaining the operation of the pulse oximeter with physical buttons according to the second embodiment. As shown in this figure, when the pulse oximeter 200 with the physical button 210 is turned on to start a series of operations, the RFID reader 120 built in the pulse oximeter 200 is always operated or periodically at predetermined intervals. (S202).

  The RFID reader 120 detects an RFID installed at a predetermined external position, and the current position of the pulse oximeter 200 is selected from the group consisting of a bedroom, a kitchen, a toilet, the outdoors, a dressing room, and a bath. It is determined whether or not it is located at any of the above predetermined locations (S204). If the RFID reader 120 is not located at any of the predetermined locations, the RFID reader 120 stands by until it is located at the predetermined location. On the other hand, when the RFID reader 120 is located at a predetermined location, an instruction for prompting the user to measure the oxygen saturation level of arterial blood is displayed on the monitor 104 or outputted through the voice input / output unit 116 as a voice ( S206). At this time, the RFID reader 120 displays on the monitor 104 an instruction for prompting the user to input the living state, activity or subjective symptom of the subject.

  When the user inserts a finger into the fingertip measurement type measurement unit 102 and measures the oxygen saturation and pulse rate of arterial blood, the measurement data is automatically transmitted from the measurement unit 102 to the data processing unit 112 (S208). ). When the user inputs situation data selected from rest, meal, toilet, walking, change of clothes, bath, etc., to the selection input unit 110, the data processing unit 112 links the measurement data and time data at the time of input to the recording unit 108 (S210).

  Thereafter, the measured value display unit 114 displays the measured values of oxygen saturation and pulse rate on the monitor 104 (S212), and ends the series of operations.

  Since this pulse oximeter 200 is a pulse oximeter 200 with a physical button 210, unlike the first embodiment, a dedicated program is installed in a commercially available portable information terminal and used by connecting to the pulse oximeter. There is no need. As a result, there is an advantage that it is easy to use even for elderly people who are not good at connection and setting of commercially available electrical equipment and who are not good at touch panel operations.

  In addition, this pulse oximeter 200 enables a patient performing home therapy to know the value of oxygen saturation corresponding to each operation and position information in daily life, its temporal change, and their relative fluctuations. It can be expected to improve the quality of life. In this portable information terminal 300, since the value of oxygen saturation of the patient or its variation can be confirmed by outputting data in the recording unit 108 at the doctor or nurse station, it can be expected that the patient's anxiety is reduced. .

<Modification of Embodiment 2>
FIG. 10 is a functional block diagram illustrating an overall configuration of a pulse oximeter integrated with a touch panel monitor according to a modification of the second embodiment. As shown in this figure, a pulse oximeter 100 integrated with a touch panel type monitor 104 according to this embodiment is configured by previously installing a touch panel type monitor 104 on a conventional pulse oximeter.

  The pulse oximeter 100 of the present embodiment has the same configuration and operational effects as the pulse oximeter 200 of the second embodiment except that the pulse oximeter 100 is integrated with the touch panel monitor 104. When the pulse oximeter 100 integrated with the touch panel monitor 104 is used, if the patient self-measures the oxygen saturation, the measurement data and date / time, time, Button information is recorded.

  FIG. 8 is a flowchart for explaining the operation of the pulse oximeter integrated with the touch panel monitor according to the modification of the second embodiment. As shown in this figure, when the pulse oximeter 100 integrated with the touch panel monitor 104 is turned on to start a series of operations, the A-GPS receiver 122 built in the pulse oximeter 100 is always in operation or predetermined. It operates regularly at intervals of (S302).

  The A-GPS receiver 122 receives radio waves from GPS satellites and mobile phone base stations, determines the current position of the pulse oximeter 100, and determines whether the pulse oximeter 100 has moved by more than K meters. (S304) (K is a constant and can be arbitrarily determined. For example, K = 500 meters). As a result, when the A-GPS receiver 122 determines that the current position of the pulse oximeter 100 has not moved more than K meters (K is a constant and can be arbitrarily determined; for example, K = 500 meters). Wait until you move over K meters. On the other hand, when it is determined that the current position of the pulse oximeter 100 has moved by K meters or more, an instruction to prompt the user to measure the oxygen saturation of arterial blood is displayed on the touch panel monitor 104 or a voice input / output unit. The sound is output through 116 (S306). In addition, at this time, the A-GPS receiver 122 is a touch-panel monitor for selecting two or more types of moving means selected from the group consisting of walking, bicycle, wheelchair, bus, taxi, automobile, train, ship, and airplane. 104.

  When the user inserts a finger into the fingertip measurement type measurement unit 102 and measures the oxygen saturation and pulse rate of arterial blood, the measurement data is automatically transmitted from the measurement unit 102 to the data processing unit 112 (S308). ). When the user selects any one of two or more types of moving means selected from the group consisting of walking, bicycle, wheelchair, bus, taxi, car, train, ship, and airplane and inputs them to the selection input unit 110, the data processing unit 112 records in the recording unit 108 in association with the measurement data and time data at the time of input (S310).

  Thereafter, the measured value display unit 114 displays the measured values of the oxygen saturation and the pulse rate on the monitor 104 (S312), and ends the series of operations.

  Since this pulse oximeter 200 is the pulse oximeter 100 integrated with the touch panel monitor 104, unlike the case of the second embodiment, the input operation corresponds to the operation explanation on the screen, so that it is intuitive for the user. Easy to understand and easy to operate. Further, the pulse oximeter 100 is integrated with an input device and a display device, and can be used for various operation instructions on one screen by switching the screen display at any time, so that the overall size of the device can be expected.

  Further, this pulse oximeter 200 makes it possible for a patient performing home therapy to know the value of oxygen saturation corresponding to each operation and moving means in daily life, its temporal change, and their relative fluctuations. It can be expected to improve the quality of life. Further, in this pulse oximeter 200, since the patient's position information can be always grasped when the patient goes out, when the patient's physical condition deteriorates and an alarm warning is issued as described in the first embodiment, an emergency is given. There is an advantage that the patient can be transported to the doctor or nurse station early because the corps is ready to rescue the patient.

  As mentioned above, although embodiment of this invention was described with reference to drawings, these are the illustrations of this invention, Various structures other than the above are also employable.

  For example, although the pulse oximeter or the portable information terminal has been described in the above embodiment, the present invention is not particularly limited to hardware. That is, the present invention may be a program (or a non-temporary recording medium recording the program) for installation in such an apparatus. If these programs are installed in a commercially available portable information terminal or installed as software embedded in a pulse oximeter, the oxygen saturation due to differences in living conditions, activities or subjective symptoms is the same as in the above embodiment. The change in degree can be clarified.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further, this invention is not limited to these.

<Example 1>
Using a portable information terminal with a touch panel monitor according to Embodiment 1 (connected to a pulse oximeter by wire), a 73-year-old female (pulmonary tuberculosis sequelae) is requested to cooperate with a patient at home for oxygen therapy. Oxygen saturation and pulse due to living conditions were measured over a week. The experiment was conducted at an oxygen inhalation amount of 1 L / min. The results of measuring the oxygen saturation and the pulse in this way are shown in Table 1, Table 2, FIG. 9, and FIG.

<Consideration of results>
From the experimental results of the above examples, it can be seen that this patient has a large physical load during bathing. In addition, although it is not as much as when taking a bath, it can be seen that there is a considerable physical load during meals (dinner). Therefore, the doctor or nurse will give guidance to the patient during the examination to slightly increase the oxygen inhalation amount for home oxygen therapy during bathing or during meals (dinner) based on this measurement result. It becomes possible to do.

  In the above, this invention was demonstrated based on the Example. It is to be understood by those skilled in the art that this embodiment is merely an example, and that various modifications are possible and that such modifications are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 100 Pulse oximeter 102 Measurement part 104 Monitor 106 Clock part 108 Recording part 110 Selection input part 112 Data processing part 114 Measurement value display part 116 Voice input / output part 118 Alarm part 120 RFID reader 122 A-GPS receiver 124 Net communication part 200 Pulse oximeter 210 Physical button 222 GPS receiver 300 Portable information terminal 302 Pulse oximeter 304 Connection part

Claims (19)

A portable information terminal for connecting a pulse oximeter,
A connection for connecting to a pulse oximeter to obtain measurement data including oxygen saturation;
A monitor,
A clock section that calculates time data including date and time,
A recording unit for recording measurement data;
A selection input unit that allows the user to select and input the living situation, activity or subjective symptoms of the subject at the time of measuring the oxygen saturation;
When the user inputs the living situation, activity or subjective symptom of the subject through the selection input unit, the recording unit associates the situation data including the living situation, activity or subjective symptom with the measurement data and the time data at the time of the input. A data processing unit for recording in
A measured value display unit for displaying the measured value of the oxygen saturation on the monitor;
Comprising
Mobile information terminal. The portable information terminal according to claim 1, wherein
The connection unit is configured to acquire measurement data including the pulse rate of the arterial blood;
The measurement value display unit is configured to display the measurement value of the pulse of arterial blood on the monitor,
Mobile information terminal. The portable information terminal according to claim 1 or 2,
The selection input unit is composed of two or more options selected from the group consisting of rest, meal, toilet, walking, change of clothes, bath,
Mobile information terminal. The portable information terminal according to any one of claims 1 to 3,
The monitor is a touch panel monitor,
The selection input unit is a plurality of icons displayed on the touch panel monitor.
Mobile information terminal. In the portable information terminal in any one of Claims 1-4,
The selection input unit is a voice input unit capable of input by the voice of the user.
Mobile information terminal. In the portable information terminal in any one of Claims 1-4,
The selection input unit is a plurality of physical buttons.
Mobile information terminal. In the portable information terminal according to any one of claims 1 to 6,
An alarm unit that outputs an alarm when the measured value of the oxygen saturation is compared with a predetermined numerical range and it is determined that the oxygen saturation is not within the predetermined numerical range;
Mobile information terminal. The portable information terminal according to claim 7,
The alarm part is
(1) There is no problem with the physical condition (2) Tired but there is no problem (3) I want to help because it is painful It is configured to display instructions on the monitor or voice output to prompt the user to input Yes,
Mobile information terminal. The portable information terminal according to claim 8,
When the user has not input (1) or (2) and a certain time has elapsed or the user has input (3),
(A) send an e-mail to a predetermined emergency contact e-mail address;
(B) Call a predetermined emergency contact phone number to play a message, or (c) Sound a loud alarm sound,
Configured to take one of the following actions:
Mobile information terminal. In the portable information terminal according to any one of claims 1 to 9,
Whether the current position of the portable information terminal is selected from the group consisting of a bedroom, a kitchen, a toilet, the outdoors, a dressing room, and a bath by detecting RFID installed at a predetermined external location Further comprising an RFID reader capable of determining,
Mobile information terminal. The portable information terminal according to claim 10,
When the RFID reader determines that the current position of the portable information terminal is one of two or more places selected from the group consisting of a bedroom, a kitchen, a toilet, the outdoors, a dressing room, and a bath, the user is given arterial blood. An instruction to measure the oxygen saturation of the monitor is displayed on the monitor or output by voice,
The data processing unit is configured to record the current position of the portable information terminal in a recording unit in association with measurement data and time data.
Mobile information terminal. The portable information terminal according to any one of claims 1 to 11,
A GPS receiver or an A-GPS receiver that can receive a radio wave from a GPS satellite or a mobile phone base station and determine a current position of the mobile information terminal;
Mobile information terminal. The portable information terminal according to claim 12, wherein
When the GPS receiver or the A-GPS receiver determines that the current position of the portable information terminal has moved beyond a predetermined distance, an instruction to prompt the user to measure the arterial oxygen saturation is displayed on the monitor. Or, it is configured to output sound and to display on the monitor two or more types of transportation options selected from the group consisting of walking, bicycle, wheelchair, bus, taxi, automobile, train, ship, and airplane,
The data processing unit is configured to record the current position and moving means of the portable information terminal in a recording unit in association with measurement data and time data.
Mobile information terminal. The portable information terminal according to any one of claims 1 to 13,
The clock unit displays or audibly outputs an instruction prompting the user to measure the arterial blood oxygen saturation periodically at a predetermined time, and inputs the living state, activity or subjective symptoms of the subject to the user. Configured to display instructions on the monitor to prompt
Pulse oximeter. In the portable information terminal in any one of Claims 1-14,
A network communication unit that transmits data in the recording unit to a medical institution or private company server through an Internet line;
Mobile information terminal. In the portable information terminal in any one of Claims 1-15,
The connection unit is a wired communication port or a wireless communication module;
Mobile information terminal. A pulse oximeter,
A measurement unit for measuring oxygen saturation of arterial blood and generating measurement data including the oxygen saturation;
A monitor,
A clock section that calculates time data including date and time,
A recording unit for recording measurement data;
A selection input unit that allows the user to select and input the living situation, activity or subjective symptoms of the subject at the time of measuring the oxygen saturation;
When the user inputs the living situation, activity or subjective symptom of the subject through the selection input unit, the recording unit associates the situation data including the living situation, activity or subjective symptom with the measurement data and the time data at the time of the input. A data processing unit for recording in
A measured value display unit for displaying the measured value of the oxygen saturation on the monitor;
Comprising
Pulse oximeter. The pulse oximeter according to claim 17, wherein
The measurement unit is a fingertip measurement type;
Pulse oximeter. A program for connecting a portable information terminal to a pulse oximeter for use,
The portable information terminal;
A connection that connects to a pulse oximeter to obtain measurement data including oxygen saturation,
monitor,
Clock part that calculates time data including date, time,
Recording unit for recording measurement data,
A selection input unit that allows the user to select and input the living situation, activity or subjective symptoms of the subject at the time of measuring the oxygen saturation,
When the user inputs the living situation, activity or subjective symptom of the subject through the selection input unit, the recording unit associates the situation data including the living situation, activity or subjective symptom with the measurement data and the time data at the time of the input. A data processing unit that records the measured value, and a measured value display unit that displays the measured value of the oxygen saturation on the monitor,
Program for portable information terminals to function as