JPH0712340B2 - Patient monitor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a patient monitoring apparatus which is arranged in a hospital room or the like and inputs and displays a biological signal.

[0002]

2. Description of the Related Art Generally, a patient monitoring device is arranged near a bed in a hospital room and inputs a biosignal such as an electrocardiogram, blood pressure or body temperature of a patient to display a signal waveform or data on a CRT screen for monitoring. Is configured. Since such a patient monitoring apparatus inputs and monitors the biological signals of each part of the patient, the waveform and data of the biological signals such as the electrocardiogram and blood pressure are displayed on the CRT screen even after the lights are turned off. The screen of the CRT emits considerable brightness in the hospital room after being turned off, and when an abnormality occurs in the measured biomedical signal, an alarm sound such as a speaker emits an alarm sound, which may disturb the sleep of the patient.

In order to reduce the above-mentioned problems, the conventional patient monitoring apparatus has a means for lowering the brightness of the CRT after the time when the patient room is turned off. FIG. 2 shows a schematic configuration of means for reducing the brightness of such a CRT. In FIG. 2, 2
Reference numeral 0 denotes a display control circuit, which adds horizontal and vertical synchronizing signals to the video signal and outputs the video signal to the CRT 21. At this time, the CdS (cadmium sulfide) 22 whose resistance value changes according to the brightness and the variable resistor VR are connected in series, and the potential generated in the variable resistor VR according to the brightness of the external light is applied to the display control circuit 20. The brightness can be adjusted by adding it to the CRT 21 via. The variable resistor VR sets the bias voltage applied to the cathode of the CRT 21 to a reference value.

In such a structure, when the surroundings are dark,
The resistance value of the CdS 22 increases, the voltage dividing resistance with the variable resistor VR increases, the bias applied to the CRT 21 deepens, and the brightness decreases. When the surrounding area becomes bright, Cd
The resistance value of S22 decreases, the voltage dividing resistance with the variable resistance value VR decreases, the bias applied to the CRT 21 becomes shallow, and the brightness increases.

As described above, conventionally, CdS is used to continuously control the brightness of the CRT according to the ambient brightness.

[0006]

However, although the above-mentioned conventional patient monitoring device can increase or decrease the brightness of the CRT screen according to the ambient brightness, an alarm indicating an abnormal electrocardiogram or blood pressure value during the measurement. Since no measures have been taken against sound, factors that prevent the patient from falling asleep still remain. Therefore, the patient is forced to have a mental burden during sleep after the turn-off time, and this problem becomes remarkable particularly in a hospital room accommodating a plurality of patients.

Further, since the brightness of the CRT increases or decreases depending on the brightness of the surroundings, the brightness may change depending on whether it is fine weather or rainy weather, and it may be difficult to read the display waveform, display data, and the like.

Therefore, in view of the above problems, it is an object of the present invention to provide a patient monitoring apparatus which can monitor a patient's sleep without disturbing it.

[0009]

The patient monitoring apparatus of the present invention is, for example, as shown in FIG. 1, a patient monitoring apparatus including a display device for inputting and displaying a biological signal. A memory 3 in which a sleep mode having time data is stored in advance, a control unit 4 for generating a brightness control signal and an alarm control signal based on the sleep mode of the memory 3, and a brightness control signal output from the control unit 4 for brightness. Display device 7 for increasing / decreasing signal level
Brightness control means 6 for outputting to, the voice synthesizing means 8 for stopping or canceling the output of the alarm signal by the alarm control signal output from the control means 4, and the voice synthesizing means 8
It is provided with an informing means 10 for issuing an alarm according to an alarm signal output from the device and an operating means 2 for setting or canceling the sleep mode.

[0010]

With the above configuration, the sleep mode is set in the patient monitoring device in accordance with the turn-off time and turn-off release time of the patient room to reduce the brightness of the screen of the display device, the alarm sound is also stopped, and the turn-off release time is set. Since it is set to return to the normal brightness,
Very little interruption of the patient's sleep. Therefore, the mental burden on the patient can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the patient monitoring apparatus of the present invention will be described below with reference to FIG. In FIG. 1, 1 is
It is a biological signal input section for detecting a biological signal such as an electrocardiogram signal, blood pressure or body temperature by the electrode or the sensor E. The bio-signal input unit 1 includes an amplifier that amplifies the bio-signal input and an A / D converter (both not shown) that converts the bio-signal into a digital signal.

Reference numeral 2 denotes an operation unit including a keyboard, which is provided with a sleep mode key 2a and a data key 2b including a plurality of keys. The sleep mode key 2a is
It has a function of setting a sleep mode described below by pressing the button during the normal operation of the present embodiment and returning to the normal operation by pressing the button during the operation of the sleep mode. The data key 2b is used to set the sensitivity of the biological signal input section 1 and to input various data.

In the sleep mode described above, the brightness of the display device of the patient monitoring apparatus is lowered in accordance with the turn-off time when the room is turned off, the alarm sound is stopped, and the brightness of the display device is turned off when the turn-off cancellation time is reached. This is a function to raise and release the output stop of the alarm sound.

3 is, for example, a battery-backed R
A memory consisting of AM or E ² PROM, etc., and the turn-off time of the patient's room that enters sleep mode (for example, 10 pm)
Also, a control program for controlling measurement of various biological signals and the like, together with timer data such as the extinguishing release time (for example, 6:00 am on the next day), are stored in advance. The timer data can be arbitrarily set by the data key 2b of the operation unit 2 in consideration that the turn-off time and the turn-off cancellation time are different for each hospital.

Reference numeral 4 denotes a control unit composed of a CPU, a ROM, a RAM, etc., which reads out a control program of the memory 3 and timer data of a sleep mode, controls the entire apparatus, sets and cancels the sleep mode, and a brightness control signal. And output an alarm control signal. When any operation change is made by the operation unit 2 during operation in the sleep mode or during normal operation, the control unit 4 gives priority to the changed operation.

A display control unit 5 converts data such as a biological signal input through the biological signal input unit 1 into image information under the control of the control unit 4 and outputs the image information.

A brightness control unit 6 controls the brightness signal level of the image information output from the display control unit 5 by the brightness control signal of the control unit 4 to increase or decrease the brightness of the screen of the display device 7 including a CRT or the like. .

Reference numeral 8 is a voice synthesizing unit, which has a voice memory, a controller, a voice synthesis circuit and the like built-in, and is in control during normal operation
The alarm signal stored in the voice memory in advance is output according to the alarm control signal output from the device, or the output of the alarm signal is stopped from the turn-off time to the turn-off cancellation time in the sleep mode.

Reference numeral 9 denotes an audio output unit including an amplifier and the like, which inputs an alarm signal output from the audio synthesizing unit 8 and amplifies the power, and an alarm signal is announcing from an annunciator 10 including, for example, a speaker.

In the above structure, during normal operation until the extinguishing time, the biological signal detected by the biological signal input section 1 is
It is taken into the control unit 4, converted into image information by the display control unit 5, and displayed as a signal waveform or data on the screen of the display device 7 via the brightness control unit 6. Therefore, the condition of the patient can be monitored by a doctor or a nurse.

When any abnormality occurs in the measured biological signal, the control unit 4 detects this abnormality and sends an alarm control signal to the voice synthesis unit 8, and the voice synthesis unit 8 outputs a voice based on this alarm control signal. The alarm signal is output, and the alarm device 10 notifies the abnormality through the voice output unit 9.

Next, when it is time to turn off the room, the control unit 4
Sends a brightness control signal and an alarm control signal to the brightness control unit 6 and the voice synthesis unit 8 based on the sleep mode timer data stored in the memory 3 to reduce the brightness of the screen of the display device 7 to a predetermined brightness. At the same time, the voice output unit 9 is controlled not to notify the alarm. Therefore, after the turn-off time, the brightness of the screen of the display device 7 decreases, and since the alarm sound is not notified from the alarm device 10, the patient can sleep. In this case, even if the alarm sound of the patient monitoring device in the hospital room is stopped, the patient monitoring device is normally connected to the central monitoring device such as the nurse center and the alarm signal is output, so The biological signals of can always be monitored without any trouble.

When the turn-off cancellation time in the sleep mode is reached, the control unit 4 reads the timer data from the memory 3, sends the brightness control signal and the alarm control signal to the brightness control unit 6 and the voice synthesis unit 8, and the display device 7 displays. The screen brightness is raised and the output stop of the alarm signal of the voice synthesizer 8 is released. Therefore, the patient monitor will return to normal operation.

If any action is required during the operation in the sleep mode described above, pressing any key of the operation unit 2 sends an interrupt signal to the control unit 4 to cancel the sleep mode. Since the normal operation is resumed, the brightness of the screen of the display device 7 is increased, and the stop of the output of the alarm sound from the voice synthesis unit 8 at the time of detecting the abnormality is also canceled.
After returning to the normal operation, required settings are made by the operation unit 2, and the sleep mode can be set again by pressing the sleep mode key 2a. Sleep mode key 2
If a is not pressed, normal operation is continued.

Further, when shifting to the sleep mode during the normal operation, the sleep mode can be set by pressing the sleep mode key 2a of the operation unit 2, and the display is made according to the set turn-off time and turn-off cancellation time. The brightness of the device 7 decreases and increases.

As described above, since the brightness of the screen of the display device 7 is automatically lowered and the alarm sound is not notified from the turn-off time of the hospital room to the turn-off cancellation time, the sleep of the patient can be disturbed. It can be prevented.

Although the CRT is used as the display device in the above-described embodiment, the present invention can be applied to a patient monitoring device using a liquid crystal display device with a backlight, for example. In this case, instead of controlling the brightness signal of the CRT, the brightness of the backlight may be controlled to decrease after the turn-off time.

Further, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0029]

As described above, according to the present invention, the brightness of the screen of the display device is automatically reduced and the alarm sound is stopped during the period from the extinguishing time to the extinguishing time of the room. Therefore, there is an effect that the mental burden on the patient can be reduced without disturbing the sleep of the sleeping patient or other patients after the light is turned off.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a patient monitoring apparatus of the present invention.

FIG. 2 is a schematic configuration diagram showing brightness control of a conventional patient monitoring apparatus.

[Explanation of symbols]

 2 operation unit 3 memory 4 control unit 6 brightness control unit 8 voice synthesis unit 10 alarm device

Claims (1)

[Claims] 1. A patient monitoring device comprising a display device for inputting and displaying a biological signal, and a memory in which a sleep mode having time data of a turn-off time and a turn-off cancellation time is stored in advance, and the sleep mode of the memory is set to the sleep mode. A control means for generating a brightness control signal and an alarm control signal based on the brightness control signal; a brightness control means for increasing or decreasing the level of the brightness signal by the brightness control signal output from the control means to output the brightness signal to the display device; A voice synthesizing means for stopping or canceling the output of the alarm signal according to the output alarm control signal, an informing means for issuing an alarm according to the alarm signal output from the voice synthesizing means, or setting the sleep mode or A patient monitoring apparatus comprising: an operating means for releasing.