JP2000060805A - Biological information measurement device - Google Patents

Abstract

(57) [Summary] The present invention has a function of automatically shifting from a spot measurement mode to a continuous measurement mode, and eliminates the need for an operator to switch between the spot measurement mode and the continuous measurement mode. It is an object of the present invention to provide an easy-to-use biological information management device that can easily perform measurement in a desired arbitrary mode with a simple operation. A CPU executes a spot measurement in a spot measurement mode in response to an operation of a measurement start switch (S), performs the spot measurement for a first predetermined time, and when the measurement is completed, Thereafter, it is determined whether or not the measurement end switch (P) has been operated. If it is determined that the measurement end switch (P) has not been operated, a predetermined second predetermined time elapses, and no special operation is performed. The operation automatically shifts from the spot measurement mode that has been executed to the continuous measurement mode to the operation of collecting and recording electrocardiogram data as continuous measurement in the continuous measurement mode.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biological information measuring device having a spot measurement mode for measuring and collecting biological information in spots and a continuous measurement mode for continuously measuring and collecting biological information for a predetermined time, In particular, the present invention relates to a biological information measuring device characterized by the switching function of each measurement mode.

[0002]

2. Description of the Related Art When regularly monitoring the condition of a patient,
Measurement data is collected in spots once at a predetermined time for a predetermined period, and the trend of symptoms and symptoms of patients is analyzed. When the patient's condition is constantly monitored, biological information is continuously measured and the patient's symptoms and symptoms are analyzed.

Therefore, for example, in a conventional portable electrocardiograph or pulse oximeter, a spot measurement mode in which biological information is measured and collected in spots, or biological information is continuously measured and collected for a predetermined time. A mode switch for selecting one of the continuous measurement modes and setting the measurement mode is provided. And when making measurements,
Each time, the patient or attendant needs to operate the mode switch by pressing the mode switch according to the situation. Therefore, conventionally, there has been a problem that a patient and an attendant are burdened with a troublesome operation and a patient is made aware that the measurement is being performed (forces a mental burden). Further, from the above-mentioned problems, there is a problem that the patient is reluctant to perform the measurement and the number of times of the measurement is gradually reduced, so that the biological information measuring device is not effectively used.

[0004]

As described above, conventionally, when measuring biological information, it is necessary for the patient or an attendant to press the mode switch according to the situation every time the biological information is measured. There was a problem that the operation burden was imposed on the attendant and the attendant, and the patient was given the consciousness (mental burden) of being measured. Further, therefore, there is a problem in that the patient is reluctant to measure, the number of times of measurement is gradually reduced, and the biological information measuring device is not effectively utilized.

The present invention has been made in view of the above circumstances,
In a biological information measuring device having a spot measurement mode for measuring and collecting biological information in spots and a continuous measurement mode for continuously measuring and collecting for a predetermined time, the spot measurement mode automatically changes to the continuous measurement mode. Easy-to-use biometric information management device that has the function of shifting to, and does not require the operator to switch between spot measurement mode and continuous measurement mode, and can easily perform measurement in any desired mode with simple operations. The purpose is to provide.

[0006]

The present invention provides a biological information measuring device having a spot measuring mode for measuring biological information in spots and a continuous measuring mode for continuously measuring biological information. The switch from the spot measurement mode to the continuous measurement mode is possible only by operating the switch.

That is, the present invention is a biometric information measuring apparatus having a function of automatically shifting from the spot measurement mode to the continuous measurement mode, in which the biometric information is measured for a predetermined time according to the operation of the measurement start switch. The measuring means, the time measuring means which is activated when the biological information is measured by the biological information measuring means for a predetermined time, and the measurement mode in which continuous measurement is performed when the measurement start switch is not operated during the time counting of the time measuring means And a measurement mode control means.

Further, the above-mentioned biological information measuring device is characterized by comprising control means for terminating the measurement of biological information when the measurement start switch is operated after starting the measurement of biological information.

Further, in the above-mentioned biological information measuring device, the biological information measuring means for contacting a plurality of biological contact electrodes with a predetermined part of the human body to measure biological information, and the timing means contacting the biological contact electrodes during timing. It is characterized by further comprising a control means for judging whether or not the electrode is detached from the resistance value, and terminating the measurement of the biological information when it is judged that the electrode is detached.

Further, in the biological information measuring device, a biological information measuring means for measuring the oxygen saturation in arterial blood by bringing the probe into contact with a finger, and a control means for ending the measurement when the probe is detached. It is characterized by having.

By providing the function of automatically shifting from the spot measurement mode to the continuous measurement mode as described above, the switching operation between the spot measurement mode and the continuous measurement mode by the patient (measuring person) is not required, and the operation is simple. The measurement can be easily performed in any desired mode. Further, since the usability is remarkably improved, the patient can effectively use the biological information measuring device.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing a configuration of a biological information measuring device according to an embodiment of the present invention, FIGS. 2 and 3 are flowcharts showing an operation processing procedure of the biological information measuring device, and FIG. 4 is a biological information measuring device. FIG. 5 is a diagram showing an external configuration of the device, FIG. 5 is a diagram for explaining an electrocardiographic waveform measuring method in the biological information measuring device, and FIG. 6 is a diagram showing a circuit configuration of the biological contact resistance detection unit shown in FIG. .

In FIG. 1, reference numeral 1 is a biological information measuring device according to an embodiment of the present invention. 1A and 1B are a pair of bio-contact electrodes, which are used by directly contacting the skin of a predetermined part of the human body (measurer) when measuring an electrocardiographic waveform. Here, as shown in FIG. 5, it is used by directly contacting the skin of the right hand and the chest.

Reference numeral 10 denotes a CPU that controls the entire apparatus. Here, the CPU has a timer function (timers 1 and 2) for realizing a time measuring means for measuring a predetermined time, and a ROM.
According to the control program stored in 15, the electrocardiographic waveform sampling and recording process, the chart (electrocardiogram) or the communication (wired or wireless) output process and the like are executed.

Reference numerals 11 to 13 are constituent elements of a signal processing unit for obtaining an electrocardiographic waveform measurement signal.
Reference numeral 1 is an amplifier circuit (AMP) for amplifying an electrocardiographic waveform signal picked up by the electrodes 1A and 1B, and 12 is an amplifier circuit (AM).
P) a filter circuit (FL) for removing noise components from the signal amplified by 11, and 13 a filter circuit (FL) 12
It is an A / D converter (A / D-CONV) that supplies the CPU 10 with a signal (measurement data) obtained by converting an analog amount of the electrocardiographic waveform signal via the signal into a signal of a logical level and quantizing it. Since the circuit configuration of this signal processing unit is the same as the conventional one, the specific circuit configuration is omitted here.

Reference numeral 14 is a RAM used as a work area of the CPU 10, a storage area for the collected measurement data, and the like, and 15 is a control program which is a computer program for executing the collection and recording (storing) processing of the electrocardiographic waveform. ROM, 16 is device information (ID code) of each device
It is an EEP-ROM in which, etc. are stored.

Reference numeral 17 denotes a switch signal input interface (SW-I /) for inputting each operation signal of the measurement start switch (S) and the measurement end switch (P) to the CPU 10.
F). Reference numeral 18 denotes an electrocardiogram data output unit that outputs the measurement data stored in the measurement data storage area of the RAM 14 as an electrocardiogram, or outputs the measurement data to the outside.

Reference numeral 19 is a display device for displaying and outputting the device status information, measurement result information and the like. In this case, the electrodes are not properly applied or the skin is dry, so that there is a gap between the skin and the electrodes. If the contact resistance of the device is not sufficiently low (the electrode is in a contact state where normal measurement is not possible), a message to inform the measurer of the electrode contact condition so that measures such as re-attaching the electrode or adding water can be taken Is displayed and output.

Reference numeral 20 denotes a sounding device for notifying the state of the device. Here, when the above-described electrode contacting state in which normal measurement cannot be performed, the alarming sound for notifying the measurer of the electrode contacting state. Is output.

Reference numeral 21 is circuit-connected to the electrodes 1A and 1B,
A bio-contact resistance detector of high input impedance for detecting the bio-contact resistance of the electrodes 1A and 1B, the configuration of which is shown in FIG.
Is shown in. That is, the biological contact resistance detection unit 21 is a functional circuit for inputting to the CPU 10 a signal indicating the biological contact resistance value that changes depending on the attachment state of the electrodes 1A and 1B when measuring the electrocardiographic waveform. As shown in FIG. 6, it is composed of a high input impedance amplifier circuit 22 provided in the preceding stage and a logic level signal conversion circuit 23 provided in the succeeding stage.

In the figure, Q1 and Q2 are switching transistors, and R1 to R4 are resistors.

FIG. 4 is a diagram showing the external structure of the biological information measuring apparatus. In the figure, 30 is the body of the portable biological information measuring apparatus, and 31 is the sound wave transmission included in the electrocardiogram data output unit 18. Of the speaker, 32 is a photocoupler for transmitting an optical signal, 33 is a hinge part, and 34 is a switch part for setting an ID code or the like.

The operation of the present invention will now be described with reference to the above figures.

When the electrocardiographic waveform is sampled and stored, FIG.
And, as shown in FIG. 5, the electrodes 1A and 1B of the portable electrocardiographic recording device having the structure shown in FIG. 4 are brought into direct contact with the skin of the right hand and the chest, and the measurement start switch (S) of the device body is operated. The measurement operation is started by. On the contrary, the measurement operation is ended by operating the measurement end switch (P).

The operation at this time will be described with reference to the flow charts shown in FIGS.

When the measurement start switch (S) is operated (step S1 in FIG. 2), the CPU 10 records the measurement data (electrocardiogram data) according to the control program in the R0M15, that is, collects the electrocardiographic waveform data and Prior to the recording, the electrodes 1A, 1B are detected by the biological contact resistance detector 21.
A detection signal indicating the biological contact resistance value that changes depending on the adhered state of the electrodes is detected (step S2 in FIG. 2), and whether or not the adhered states of the electrodes 1A and 1B are normal is determined from the detected contact resistance value. Is determined (step S3 in FIG. 2).

Here, when the detected resistance value is sufficiently small (below the preset threshold value) and the electrodes 1A and 1B are in a normal contact state, the electrocardiogram data (electrocardiographic waveform data) is detected. The collecting and recording operation is started (step S4 in FIG. 2).

At this time, the timer 1 in the CPU 10 is activated (step S5 in FIG. 2), and the electrocardiogram data is collected and recorded as spot measurement in the spot measurement mode until the timer 1 times up (for example, 40 seconds). Is continued (step S6 in FIG. 2).

When the timer 1 has passed 40 seconds, the spot measurement is completed (step S7 in FIG. 2), and the CP
An amplifier circuit (AMP) 11, a filter circuit (FL) 12, an A / D converter (A / D-CON) under the control of U10.
V) The signal (electrocardiographic waveform data) processed by the signal processing unit such as 13 is written in the RAM 14 (step S in FIG. 2).
8).

When the detected resistance value is larger than the set threshold value and the electrodes 1A and 1B are not in the normal contact state, the electrodes are reapplied. At this time, a message that informs the measurer is displayed and output on the display device 19 so that measures such as watering can be taken. Further, a notification sound is output (step S18 in FIG. 2).

When the timer 1 is up, C
The timer 2 in the PU 10 is activated (step S in FIG. 2).
9).

While the timer 2 is activated, it is judged from the biocontact resistance value detected by the biocontact resistance detection unit 21 whether or not the electrodes 1A and 1B are in a normal monitored state (step S10 in FIG. 3). , Sll).

Further, while the timer 2 is being activated, it is judged whether or not the measurement end switch (P) is pushed (step S12 in FIG. 3). In this step S12, after it is determined that the measurement end switch (P) has not been pressed, the timer 2 which is measuring time is up (for example, 30
Then, the spot measurement mode automatically shifts to the continuous measurement mode (step S14 in FIG. 3).

Then, again, the electrocardiographic data sampling and recording operations are performed as continuous measurement in the continuous measurement mode (step S15 in FIG. 3).

The above-described electrocardiogram measurement is performed until the measurement start switch (S) is pressed (step S16 in FIG. 3).

When the measurement start switch (S) is pressed,
The measured electrocardiogram data is written to RAMI4 (Fig. 3
Step S17).

Further, when the contact resistance value detected by the biological contact resistance detection unit 21 is larger than the set threshold value while the timer 2 is running, and the electrodes 1A and 1B are not in a normal contact state, that is, the measuring person. The measurement is terminated when it is removed by or when the measurement start switch (S) is pressed.

In this way, when the electrodes 1A and 1B are in contact with each other, the measurement end switch (P) is not pressed, and the timer 2 is up, the biological information measuring device 1 continues from the spot measurement mode. Automatically switches to measurement mode.

As a result, for example, the patient voluntarily removes the electrodes 1A, 1B or presses the measurement end switch (P) to end the measurement, or automatically changes from the spot measurement mode to the continuous measurement mode. It can be transferred.

Next, with reference to FIG. 6, the operation of the living body contact resistance detecting section 21 will be described.

A voltage of about +5 V as Vcc and about -5 V as Vss is applied to the amplifier circuit 22 having a high input impedance provided in the preceding stage. The resistance R2 is determined by the resistance value between the set electrodes and the current amplification factor of the switching transistor Q1, but generally a high resistance of 10 MΩ or more is used.

When the resistance between the electrodes 1A and 1B is low to some extent, the switching transistor Q1 is turned on by the current flowing through the resistance R1.
Output end (emitter of switching transistor Q1)
Becomes a value close to Vss. Along with this, in the signal conversion circuit 23 to the lodge level provided in the subsequent stage, the switching transistor Q2 is turned off, and the detection output is Vdd.
It becomes a value close to.

When the resistance between the electrodes 1A and 1B is high, the switching transistor Q1 is turned off and the switching transistor Q2 is turned on, so that the detection output becomes a value close to "0" contrary to the above state. The signal can notify the CPU 10 that the contact resistance is high.

By providing the automatic transition function from the spot measurement mode to the continuous measurement mode as described above,
The number of mode switches can be reduced (only the measurement start switch needs to be operated), and the measurement mode can be automatically switched without performing the operation to switch from the spot measurement mode to the continuous measurement mode. Is greatly reduced, and the troublesome operation of the device is eliminated.

In the above embodiment, the measurement of the electrocardiogram was described as an example, but the invention is not limited to this. For example, a pulse oximeter for measuring the oxygen saturation or pulse in the arterial blood by bringing the probe into contact with the finger. The present invention can be applied to various biological information measuring devices that detect other biological information.

Further, in the present embodiment, the continuous measurement mode is ended by depressing the measurement start switch after shifting to the continuous measurement mode (see steps S14 to S16 in FIG. 3), but the invention is not limited to this. If it is determined that the probe has been removed from, the continuous measurement mode currently being measured may be forcibly ended in response to this.

Further, in the present embodiment, the measurement start switch (S) is used as the measurement start operation means and the measurement end switch (P) is used as the measurement end operation means, but the present invention is not limited to this. A single measurement start switch (S) is used as the start operation means and the measurement end operation means, and, for example, in step S1 in FIG. 3, the spot measurement of biological information is performed by operating the measurement start switch (S). Later (see steps S2 to S5),
The measurement start switch (S) automatically performs continuous measurement in the continuous measurement mode of biometric information on condition that it is determined in step S12 in the figure that the predetermined time has elapsed without being pressed (step S13). You may make it to.

[0049]

As described above, according to the present invention, a biological information measuring device for measuring biological information is provided with a function of automatically shifting from the spot measurement mode to the continuous measurement mode. The switching operation between the spot measurement mode and the continuous measurement mode by the (measurer) is not required, and the measurement can be easily performed in a desired arbitrary mode with a simple operation. Further, since the usability is remarkably improved, the patient can effectively use the biological information measuring device.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a biological information measuring device according to an embodiment of the present invention.

FIG. 2 is a flow chart showing an operation processing procedure of the above apparatus.

FIG. 3 is a flow chart showing an operation processing procedure of the above apparatus.

FIG. 4 is a diagram showing an external configuration of the device.

FIG. 5 is a diagram for explaining electrocardiographic waveform measurement in the above device.

FIG. 6 is a diagram showing a circuit configuration of a biological contact resistance detection unit shown in FIG.

[Explanation of symbols]

1 ... Biological information measuring device, 1A, 1B ... electrodes, 10 ... CPU, 21 ... Biocontact resistance detection unit, S ... Measurement start switch.

Claims (4)

[Claims] 1. A biometric information measuring apparatus for measuring biometric information, wherein a measurement start operation means operated to start the measurement of the biometric information, and a measurement operated to end the measurement of the biometric information. According to the operation of the end operation means and the measurement start operation means, a first predetermined time,
Biometric information measuring means for performing the biometric information measurement as spot measurement in a spot measurement mode; and timing for performing second predetermined time counting after the biometric information measuring means completes measurement of the biometric information for the predetermined time. Means and a measurement mode control means for shifting to a measurement mode for performing continuous measurement of the biological information when the measurement end operation means is not operated during the time of the second predetermined time by the time measurement means. A biological information measuring device characterized by comprising: 2. A measurement termination control means for terminating the measurement of the biological information during the spot measurement when the measurement termination operation means is operated during the measurement of the second predetermined time. 1. The biological information measuring device according to 1. 3. The biological information measuring means includes a measuring means for measuring the biological information by bringing a plurality of biological contact electrodes into contact with a predetermined part of a human body, and the timing means measures the contact resistance of the biological contact electrodes during timing. The living body according to claim 1 or 2, further comprising: biometric information measurement end control means for terminating the measurement of the biometric information when it is determined whether or not the electrode has been removed based on the value, and when it is determined that the electrode has been removed. Information measuring device. 4. The biological information measuring means includes a measuring means for measuring oxygen saturation in arterial blood as the biological information by bringing a probe into contact with a finger, and when the probe is detached, the oxygen being measured is measured. The biological information measuring device according to claim 1, 2 or 3, further comprising control means for ending the measurement of the degree of saturation.