JP2001000402A - Device to detect living and abnormal signs - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remotely and automatically detect abnormal signs of respiration and heartbeat frequency of a patient and also detect if he/she moves away from the bed by using an air mat in which air status is changed in synchronization with the respiration of an aged or patient during sleep, and detecting a change in air status by a pressure sensor. SOLUTION: A bedridden aged or invalid (hereinafter, designated as a patient) is laid on a respiration detection mat 50, and a pressure sensor 3 detects a change in air pressure 4 in an air mat 2 in which air status is changed in synchronization with respiration of the patient. Output signals from the pressure sensor 3 are sent to an abnormality detector 60 which inputs the output signals to a respiration abnormality detector 61 and a human body detector 62. The respiration abnormality detector 61 extracts only a respiration signal from the pressure sensor signals and compares the respiration signal with a predetermined respiration frequency to determine whether the respiration is correct or not. When the respiration is abnormal, if the human body detector 62 detects that the patient is laid on the mat 50, the respiration abnormality detector 61 generates a warning signal to a warning device to inform a cared person, nurse, etc., of the abnormality.

Description

DETAILED DESCRIPTION OF THE INVENTION

The present invention is intended to automatically report abnormalities in the respiratory rate and heart rate of a bedridden elderly at home or a sick person at bedtime when abnormalities are recognized, and to prevent wandering of the elderly. The present invention relates to a device for detecting vital signs and performing an abnormality judgment for preventing the patient from leaving the bed and for managing the leaving of the sick person.

[0002]

2. Description of the Related Art Conventionally, it has been impossible to take effective measures against sudden death of an elderly or sick person while sleeping, which has become a major social problem. In addition, the living body monitoring of critically ill patients who are hospitalized is performed by nurses every few hours during patrols, but the current situation is that a complete nursing system has not been established due to lack of nursing and long working hours.

[0003]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the first invention of the present application is a pressure sensor connected to a respiration detection air mat, which changes the breathing or heartbeat of an elderly or sick person by leaving the bed. A respiratory detection mat that detects respiration, heartbeat, and getting out of bed from a change in air pressure in the air mat that performs respiration. A device that detects signs and determines abnormalities.

[0004] A second aspect of the present invention provides a respiratory detector for judging the presence or absence of a human body on a respiratory detection mat from a respiratory signal input from the first aspect of the present invention, and a respiratory abnormality from the input respiratory signal. An abnormal respiratory conditioner that makes a judgment, and when the human body detector signal input to the abnormal respiratory conditioner determines that there is a respiratory abnormality, and the human body detector signal input to the abnormal respiratory conditioner is an H signal indicating that there is a human body, an external abnormality has occurred. Is output from the abnormality determiner. Also, a device for detecting vital signs and judging abnormalities which has a function of outputting a bed leaving signal from a human body detector to the outside when leaving the bed to prevent wandering of the elderly or sick person.

[0005] Further, the configuration of the second invention using the respiration detection mat provided with an air mat will be described in some detail.
A pressure sensor that detects a change in air pressure in the air mat that changes due to a patient's breathing on the respiration detection mat, an amplification circuit that amplifies a signal from the pressure sensor to a voltage required for subsequent signal processing; A filter for extracting only the respiratory signal component from the output waveform, a filter for suppressing a respiratory counting error, a waveform shaping unit for shaping the input signal into a pulse, a respiratory counting unit for counting the pulse, and a respiratory abnormality from the pulse count value A respiratory abnormality judging unit that outputs an H signal when judging an abnormality, a human body detector that detects whether a patient on the air mat is absent and outputs an H signal when it is determined that a patient is present, and an air mat on the air mat. An AND circuit for performing an AND operation to output an abnormality determination signal for notifying the outside only when the patient is present and the respiratory abnormality determination unit determines that the abnormality is abnormal; and the AND circuit An alarm output unit for driving the alarm when H output, when it is determined that the patient lifting the human body detecting unit, and a lifting output section that drives the communicator, a notification unit alarm lamp 1
And an alarm buzzer and an alarm lamp 2 for detecting vital signs and determining abnormality. Further, the present invention is an apparatus for detecting vital signs and judging abnormalities, in which a respiratory detection mat can be attached to a macula.

A third aspect of the invention is characterized in that the configuration of the second aspect of the invention is provided with a respiration rate display section for displaying a respiration rate and a respiration waveform display section for displaying a respiration waveform. A device that detects signs and determines abnormalities.

[0007] The configuration of the fourth invention is characterized in that the computer of the second or third aspect of the present invention records abnormal breathing status, leaving bed, leaving bed time, and other data as required by a separate computer, and outputs abnormal data. An apparatus for detecting vital signs and determining abnormalities, characterized in that a patient record, a respiratory rate, a respiratory waveform, and other recorded data are sometimes automatically provided on a screen.

A fifth aspect of the present invention provides the above-described singular or plural respiratory rate and respiratory waveform of the second aspect of the invention.
Transmission of abnormal conditions, bed exit status, bed exit time, and other data to a computer installed in a remote facility that has been registered as a communication partner in advance by wireless or wired (including telephone line), and to receive data An apparatus for detecting vital signs and determining an abnormality, comprising: an automatic notifying unit in the event of abnormal breathing.

The structure of the sixth invention is the same as that of the second embodiment,
Means for measuring a heart rate, means for displaying a heart rate, means for displaying a heart rate waveform, means for displaying a heart rate abnormality, means for determining a heart rate abnormality, and an alarm when a heart rate is abnormal A device for detecting a vital sign and determining an abnormality characterized by comprising means.

The structure of the seventh invention is the same as that of the second embodiment,
The piezoelectric sensor for detecting the respiration of the human body on the respiration detection mat of the first invention is incorporated in the abnormality determination device in the constitution of the third, fourth, fifth and sixth inventions, and a tube is provided between the air mat of the respiration detection mat and the piezoelectric sensor. Device for detecting connected vital signs and determining abnormalities.

According to an eighth aspect of the present invention, there is provided an apparatus for detecting vital signs and judging abnormality by injecting a liquid for preventing floor displacement into the respiration detecting mat according to the first aspect of the present invention.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1A shows the first and second embodiments of the present invention. FIG. 1A shows the first respiratory detection mat of the present invention of FIG. Applied to the pressure sensor 3. With the above configuration, the air pressure 4 changes in synchronization with the respiration of an elderly or sick person on the air mat 2, and the pressure applied to the pressure sensor 3 also changes. As a result, the pressure sensor 3 outputs a breathing and heartbeat signal in which a change in air pressure is converted to an electric signal to the abnormality determination device 60.

FIG. 1A shows the first and second embodiments of the present invention. In the second abnormality judging device 60 of the present invention shown in FIG. 1A, the output of the pressure sensor of the respiration detecting mat 50 is breathed. The abnormality detector 61 is connected to the input side of the human body detector 62, the output of the human body detector 62 is connected to the respiratory abnormality detector 61 and an external bed alarm, and the output of the respiratory abnormality detector 61 is an external alarm. Connected to.

The operation of the second embodiment will now be described with reference to FIG. The respiration detection mat output shown in FIG. 1 (a) extracts only a respiration signal from a pressure sensor output voltage that includes a respiration component and a heartbeat component synchronized with the respiration and heartbeat of the elderly or the patient, and detects respiratory abnormality. The number of respiratory components extracted is compared with the respiratory rate set in advance by the device 61. If the comparison result is abnormal, the abnormal respiration detector 6
When the determination is made in step 1 and the human body detector 62 determines that there is a person on the respiration detection mat 50, an alarm signal 63 is output to an externally connected alarm to stop the elderly or sick person from breathing. This informs caregivers and nurses that sudden death has occurred.

The elderly or sick person can use the respiration detecting mat 5
When the human body detector 62 is separated from 0, the human body detector 62 is turned on, and a bed leaving signal 64 for notifying that the person has left the bed is output. This makes it possible to prevent the elderly from wandering and to manage the sick with a computer.

Further, by incorporating a learning function in the abnormality detector, the breathing or heart rate of the elderly or sick person on the respiration detecting mat is automatically stored, and the breathing or heart rate abnormality is determined based on this. Things are also possible.

Further, the abnormality determination device 60 according to the second embodiment
An example of the configuration will be described. In FIG. 2, the respiration detection mat 50 is connected to the input of the amplification unit 5, the output of the amplification unit 5 is connected to the input of the filter 6 and the human body detection unit 11, and the output of the filter 6 is input to the input of the waveform shaping unit 7. The output of the waveform shaping section 7 is connected to the input section of the respiratory counting section 8, the output of the respiratory counting section 8 is connected to the input section of the respiratory abnormality determining section 9, and the output of the abnormal respiratory determining section 9 is connected to the AND circuit 13. The output of the human body detection unit 11 is connected to the gate 1, the output of the AND circuit 13 is connected to the gate 2,
The output of the alarm output unit 10 is connected to the alarm lamp 1 and the alarm buzzer, a part of the human body detection unit 11 is connected to the entrance of the bed output unit 12, and the output of the bed output unit 12 is connected to the alarm lamp 2. Connected to alarm buzzer.

With the above configuration, the operation is performed as shown in FIG. That is, FIG. 3 shows the second embodiment and a third embodiment described later.
12 is a timing chart illustrating the operation of the fourth embodiment, the fourth embodiment, and the fifth embodiment. As shown in FIG. 3, when a patient rides on a respiration detection air mat 2 that detects respiration of a human body, a pressure sensor that outputs a pressure sensor output voltage (a) including a heartbeat synchronized with the respiration of the patient 1 and a respiration component. The output is amplified by the amplifier 5 and only the respiratory signal (b) is extracted by the filter 6. Next, in order to suppress the respiratory counting error and to facilitate post-processing, the waveform shaping section 7 shapes the waveform into an inspiratory waveform (c) and an exhaust waveform (d). Next, the number of waveforms (c) and (d) is counted by the respiration counting unit 8 in the subsequent stage,
This value is compared with a value set in advance by the breathing abnormality determination section 9. If the comparison result is small (for example, when the user does not breathe for more than 20 seconds), a signal (e) is output.
Conversely, when the respiratory rate is abnormally high,> 20Sec determines that the breathing is abnormal, and outputs a signal (f).

The output voltage of the amplifying unit 5 is equal to that of the human body detecting unit 1.
If the reference value set in 1 is exceeded, it is determined that there is a human body, and the output of the human body detection unit 11 becomes (g).

When both the outputs (f) and (e) of the breathing abnormality judging section 9 and the output (g) of the human body detecting section 11 which are the inputs of the AND circuit 13 are H, the output of the AND circuit 13 is (h).
The alarm signal (i) is output from the alarm output unit 10, the alarm lamp 1 flashes and the alarm buzzer sounds to notify the caregiver or nurse that the patient's breathing has stopped.

When the patient leaves the bed, the output of the human body detection unit 11 becomes H, the alarm lamp 2 for notifying that the user has left the bed from the bed output unit 12 flashes, and the alarm buzzer sounds to indicate that the patient has left the bed. Notify caregivers and nurses of this to prevent wandering.

In the block diagram of FIG. 2, the output voltage of the amplifying unit 5 is changed to a CPU having a built-in A / D and D / A at a subsequent stage.
In addition to the above, means for processing the above in a soot is also possible.

FIG. 4 shows a third embodiment of the present invention. 4, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description will be omitted. The output of the filter 6 is the respiratory waveform display 1
The output of the respiratory counting unit 8 is connected to the input of the respiratory rate display unit 15. The caregiver or nurse can easily check the breathing state of the sleeping elderly or patient from the display means of the breathing waveform display unit 14 and the display means of the breathing display unit 15. Also, the respiration rate and respiration waveform can be output to the outside.

FIG. 5 shows a fourth embodiment of the present invention. FIG. 5 is a schematic block diagram of the block diagram of FIG. One or more of the devices for detecting vital signs and judging abnormalities according to the second to fourth aspects of the present invention are connected to a separate computer, and the respiratory rate and respiratory waveform from the device 1 for detecting each vital sign and judging abnormalities are provided. The system records and manages the time of leaving the bed and other data, and automatically displays the patient's record and the previous data on the screen in the event of an abnormality to prevent sudden death of the elderly or sick.

FIG. 6 shows a third embodiment of the present invention. FIG. 6 is a schematic perspective view of each device in the schematic block diagram of FIG.

FIG. 7 shows a fourth embodiment of the present invention. In Fig. 5.6, the communication area between the device for detecting vital signs and abnormality judgment and the computer is in the same facility, but in Fig. 7, communication is assumed to be in a remote place, and the vital signs installed in the care recipient's home The data of the device that performs detection and abnormality judgment is sent to a computer installed in a remote care center, etc., and it is possible to send voice and data from the computer side. Is displayed on a computer screen installed at a remote place from an automatic notification device via a wired or wireless circuit. The nursing care center that receives the data communicates with the patient by voice communication, grasps the situation, and runs to the site as needed to prevent sudden death.

FIG. 8 shows a sixth embodiment of the present invention. In FIG. 8, the same parts as those in FIGS. The output of the amplifier 5 is the heart rate filter 1
6, the output of the heartbeat filter 16 is connected to the input of the heartbeat waveform display unit 19 and the input of the heartbeat waveform shaping unit 17, and the output of the heartbeat waveform shaping unit 17 is connected to the input of the heartbeat counting unit 18. The output is connected to the heart rate abnormality judgment 21 and the input of the heart rate display unit 20, the output of the heart rate abnormality judgment 21 is connected to the gate 1 of the AND circuit 22, and the output of the human body detection unit 11 is connected to the gate 2 and the AND circuit The output of 22 is connected to the input of the heart rate alarm output. The caregiver or nurse can easily monitor the heartbeat and respiratory status of the elderly or patient during sleep by means of the respiratory waveform display unit 14, the display means of the heartbeat waveform display unit 19, the respiratory rate display unit 15, and the heartbeat display unit 20. Can be confirmed from. Also, a respiratory rate, a respiratory waveform, a heart rate, and a heart rate waveform can be output to the outside.

With the above configuration, the operation is performed as shown in FIG. That is, FIG. 9 is a timing chart for explaining the operation with the sixth embodiment. As shown in FIG. 9, when the patient gets on the air mat 2 for respiratory detection for detecting the respiration of the human body, the heartbeat synchronized with the respiration of the patient 1 and the pressure at which the pressure sensor output voltage (j) containing the respiratory component is output. The sensor output is amplified by the amplifier 5 and only the heartbeat signal (k) is extracted by the filter 16 and the heartbeat waveform display unit 19 displays the heartbeat waveform. Next, the heartbeat waveform shaping unit 17 shapes the heartbeat waveform (1) in order to suppress the heartbeat counting error and facilitate post-processing. Next, (1) the number of pulses is counted by the heart rate counting unit 18 at the subsequent stage, displayed on the heart rate display unit 20, and compared with a value preset by the heart rate abnormality determination unit 21. If it is determined that the heart rate is abnormal (m)
A signal is output. In some cases, the heartbeat waveform display unit 19 and the heart rate display unit 20 may not be required depending on the system.

Further, the output voltage of the amplifier 5 is
If the reference value set in 1 is exceeded, the presence of a human body is determined, and the output of the human body detection unit 11 becomes H (g).

When both the output (m) of the heart rate abnormality judging section 21 and the output (g) of the human body detecting section 11 which are the inputs of the AND circuit 22 are H, the output of the AND circuit 22 becomes (o),
The alarm signal (p) is output from the heart rate alarm output unit 23, the alarm lamp 3 flashes, and the alarm buzzer sounds to notify the nurse or nurse that the patient's heart is abnormal.

When the patient leaves the bed, the output of the human body detecting unit 11 becomes H, the alarm lamp 2 for notifying that the user has left the bed from the output unit 12 flashes, and the alarm buzzer sounds to indicate that the patient is leaving the bed. To nurses and nurses.

It is also possible to use the above-described processing in a CPU and to perform processing in a SOAT.

FIG. 1B shows a seventh embodiment of the present invention. In FIG. 1B, the same parts as those in FIG. The pressure sensor 3 shown in FIG.
An air tube 65 connects the pressure sensor 3 to the pressure sensor 3, and a change in the air pressure 4 in the respiration detection mat 50 is injected into the pressure sensor 3 via the air tube.

[0034]

The eighth embodiment of the present invention is shown in FIG.
Is shown in FIG. The liquid is injected into the respiration detection mat 50 in order to prevent the elderly or the sick person from displacing the floor.

As described above in detail, in the vital sign detection and abnormality judging device according to the present invention, when an abnormality is recognized in the breathing or heartbeat of the elderly or sick, the alarm device is automatically activated and the caregiver is activated. Alternatively, the nurse can be notified by sound and light so that sudden death can be prevented.

In addition, the monitoring of the living body of the elderly or the sick by the respiratory detection and abnormality judging device of the present invention can ensure the protection of privacy and can be performed automatically, so that the burden on the caregiver or nurse is reduced. Is done.

In the vital sign detecting and abnormality judging device of the present invention, when the elderly person leaves the respiration detecting mat, the leaving of the bed is automatically detected and an alarm signal is output, so that wandering can be prevented beforehand.

In addition, since the wake-up time of a sick person can be managed, it is possible to detect a fall accident at the blind spot in the physician from the wake-up time.

Further, in the vital sign detecting and abnormality judging device of the present invention, since the elderly or sick person can judge abnormalities of breathing and heartbeat only by sleeping on the respiration detecting mat, the burden on the care receiver is reduced. .

Further, the vital sign detecting and abnormality judging device of the present invention can monitor the living body of an elderly or sick person at a remote place.

Further, the vital sign detecting and abnormality judging device of the present invention can be used by being attached to a mache.

[Brief description of the drawings]

FIG. 1A is a block diagram schematically illustrating Embodiment 1.2 of the present invention.

FIG. 2 is a block diagram showing an example of Embodiment 2 of the present invention.

FIG. 3 is an output waveform diagram showing an operation of the example of the second embodiment.

FIG. 4 is a block diagram schematically showing a third embodiment of the present invention.

FIG. 5 is a block diagram schematically showing a fourth embodiment of the present invention.

FIG. 6 is a schematic perspective view of each device according to a fourth embodiment of the present invention.

FIG. 7 is a block diagram schematically showing a fifth embodiment of the present invention.

FIG. 8 is a block diagram schematically showing a sixth embodiment of the present invention.

FIG. 9 is an operation output waveform chart according to the sixth embodiment.

FIG. 1 is a block diagram schematically showing a seventh embodiment of the present invention.

[Explanation of symbols]

1. Patient 16. PC 2. Air mat 17. Heartbeat waveform shaping unit 3. Pressure sensor 18. Heart rate counting section 4. Air pressure 19. Heartbeat waveform display section 5. Amplifying unit 20. Heart rate display section 6. Filter 21. Heart rate abnormality determination unit 7. Waveform shaping unit 22. 7. AND circuit Respiratory counting unit 23. Heart rate alarm output section 9. Breathing abnormality determination unit 10. Alarm output unit 50. Respiration detection mat 11. Human body detection unit 60. Abnormality determination device 12. Out-of-bed output unit 61. Abnormal respiration detector 13. AND circuit 62. Human body detector 14. Respiratory waveform display section 63. Alarm signal 15. Respiratory rate display 64. Exit signal

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[Procedure amendment]

[Submission date] September 8, 1999 (1999.9.8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

FIG. 1A is a block diagram schematically showing Embodiment 1.2 of the present invention. (B) is a block diagram schematically showing Embodiment 7 of the present invention.

FIG. 2 is a block diagram showing an example of Embodiment 2 of the present invention.

FIG. 3 is an output waveform diagram showing an operation of the example of the second embodiment.

FIG. 4 is a block diagram schematically showing a third embodiment of the present invention.

FIG. 5 is a block diagram schematically showing a fourth embodiment of the present invention.

FIG. 6 is a schematic perspective view of each device according to a fourth embodiment of the present invention.

FIG. 7 is a block diagram schematically showing a fifth embodiment of the present invention.

FIG. 8 is a block diagram schematically showing a sixth embodiment of the present invention.

FIG. 9 is an operation output waveform chart of the sixth embodiment.

Claims (8)

[Claims] An air mat that changes air in synchronization with the breathing of a sleeping elderly or sick person, and means for detecting breathing or leaving the bed with a pressure sensor that converts the air change from the air mat into an electric signal. A device equipped with a detection mat to detect vital signs and determine abnormalities. 2. A means for judging respiratory abnormality from a respiratory signal output from a respiratory detection mat having means for detecting respiration of an elderly or sick person, and judging the presence or absence of an elderly or sick person on the respiratory detection mat from the respiratory signal. Means for determining whether a respiratory abnormality is determined from these means, and determining that respiratory abnormality is recognized only when a person is on the respiratory detection mat, and outputting an alarm signal for notifying the abnormality to the outside. An apparatus for detecting a vital sign and determining an abnormality, comprising: a means for outputting a signal for leaving the respiratory detection mat for controlling wandering or leaving the bed of an elderly or sick person. 3. A means for displaying the respiratory rate and the waveform of the apparatus for performing respiratory detection and abnormality determination according to claim 2, a display means for indicating a breathing time, and a means for displaying an abnormality.
A device for performing vital sign detection and abnormality determination, comprising an abnormality determination device having means for notifying an abnormality by sound. 4. A computer for recording the respiratory rate, respiratory waveform, respiratory abnormality, getting out of bed, and getting out time of the apparatus for detecting and determining abnormalities according to claim 2 and displaying these records on a screen as needed. A device for performing vital sign detection and abnormality determination, which includes an abnormality determination device that automatically displays a patient record and each record data on a screen when an abnormality occurs. 5. A respiratory rate and a bed leaving status of a device for performing respiratory detection and abnormality judgment according to claim 2 or 3 are read from a remote place by radio or wire, and automatically notified to a partner of a preset telephone number in the event of an abnormality. An apparatus for performing vital sign detection and abnormality determination, comprising an abnormality determination apparatus having means for performing the above. 6. A means for measuring a heart rate of a human body on a respiration detection mat of the apparatus for detecting respiration and judging abnormality according to claim 2 and means for outputting an alarm signal to the outside when an abnormality occurs. A device for performing vital sign detection and abnormality determination, which is provided with an abnormality determination device for adding and displaying means for displaying a heartbeat waveform and a heart rate. 7. An abnormality judging device, wherein the pressure sensor of the device for respiratory detection and abnormality judgment according to claim 2 is incorporated in the abnormality judging device, and a means for connecting the respiration detecting mat and the pressure sensor with a tube is provided. Device for detecting vital signs and determining abnormalities. 8. An apparatus for detecting a vital sign and determining an abnormality comprising a respiratory detection mat into which a liquid is injected, according to the apparatus for performing a respiratory detection and anomaly determination of claim 1. [0001]