JPH0546600B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a hospital bed alarm device, and more particularly to a hospital bed alarm device that automatically issues an alarm in the event of a fall of a patient from a hospital bed, an accident at night, or the like.

[Technical Background of the Invention and Problems Therewith] Conventionally, a hospital bed alarm device of a nurse call intercom system as shown in FIG. 3 has been used in hospitals and the like for communication between patients and nurses. The hospital bed alarm device of this nurse call/intercom system is composed of an intercom slave 1, an interface 3', an intercom transmission line 4', an intercom main unit 2', and an indicator light 23.
The intercom slave unit 1 is connected to the intercom base unit 2' via an interface 3' and an intercom transmission line 4', and is capable of calling and talking to each other.

As is clear from the above configuration, the bed alarm device of this nurse call/intercom system is based on the premise that the call operation is performed by the patient's own will. In some cases, it may be difficult or impossible to contact the patient voluntarily, such as when leaving the hospital, and the hospital setting was insufficient in some respects.

[Purpose of the Invention] The present invention was made to eliminate such inconvenience, and when a patient is absent for a certain period of time, an alarm is automatically issued assuming the possibility of an accident. It is an object of the present invention to provide a highly reliable hospital bed alarm device that notifies patients of their absence.

[Summary of the Invention] In order to achieve the above object, the hospital bed alarm device according to the present invention includes an intercom base unit installed in a nursing station, an intercom base unit connected to the intercom base unit via an interphone transmission line, and installed in a patient room. A hospital bed alarm system consists of a pressure-sensitive sensor installed on the bed in the hospital room to detect the patient's absence, a timer connected to the pressure-sensitive sensor and measuring the time the patient is absent, and a timer controlled by the timer. The system is comprised of an alarm means that generates a signal sound, and automatically issues an alarm if the patient is absent for a preset period of time.

[Embodiments of the Invention] Preferred embodiments of the hospital bed alarm device according to the present invention will be described below with reference to the drawings.

The hospital bed alarm device according to the present invention, as shown in FIG.
It consists of A pressure sensor 5 is connected to the interface 3. The intercom base unit 2 has a switch 22 for controlling a timer and an indicator light 23.

Regarding this hospital bed alarm device, as shown in FIG. 2, its circuit and connection relationship will be described. An intercom handset 1 is composed of a communication system 12 and a call switch 11.

The intercom base unit 2 is the intercom base unit 2
1. Switch 22 that controls the timer, indicator light 2
3. It is composed of a communication system 24, an alarm device 211 as an alarm means, and a calling means 212.

The interface 3 is the interface part 3
1. Switch 311, chattering prevention circuit 31
2, a timer 313, a one-shot multivibrator 314, and a relay 315.

Interface part 3 in interface 3
1 and an interface section 21 in the intercom base unit 2 are connected at corresponding parts via an intercom transmission line 4, as shown in FIG.

The call system 12 in the intercom handset 1 is
Interface part 31 in interface 3
Similarly, the call switch 11 is connected to an interface section 31 within the interface 3.

The pressure sensor 5 is installed in the bed in the hospital room and connected to the switch 311 of the interface 3.
It is connected to a chattering prevention circuit 312 and a timer 313 in this order.

The timer 313 is connected to the connection point b of the interface section 31 via a one-shot multivibrator 314 and a relay 315, and directly to the interface section 31. In addition, when the switch 22 of the intercom base unit 2 is "ON",
Interface section 21, interface section 3
1, power is supplied to the timer 313, and power is also supplied to the chattering prevention circuit 312 and the one-shot multivibrator 314.

Furthermore, the indicator light 23, the calling means 212, the telephone system 24, and the alarm 211 are directly connected to corresponding portions of the interface section 21, respectively.

In the hospital bed alarm device configured in this way,
The intercom handset 1 includes an interface section 31 of the interface 3, an intercom transmission line 4,
It is possible to make a call to and talk to the intercom base unit 2 via the interface section 21 of the intercom base unit 2.

Switch 311 and switch 22 are “ON”,
In other words, when the alarm system is activated,
The moment the patient leaves the bed, a change in the output of the pressure sensor 5 is waveform-shaped into a pulse by the chattering prevention circuit 312, and a timer 313 is activated. Note that when the patient turns over in bed, the pressure-sensitive sensor 5 enters a kind of chattering state, and this is dealt with by processing the waveform by the chattering prevention circuit 312 as described above.
Timer 3 starts when a preset period of time has elapsed.
13 outputs a trigger and starts the one-shot multivibrator 314. The one-shot multivibrator 314 sends out a signal with a constant pulse width onto the intercom transmission line 4 via the relay 315, and captures the intercom transmission line 4.
This signal causes the alarm 211 to sound via the intercom transmission line 4 and the interface section 21 in the intercom base unit 2. In other words, the fact that the patient will be absent for a certain period of time is communicated to the nurse at the nursing station, and the corresponding patient's lamp on the indicator light 23 is lit, allowing the nurse to anticipate the possibility of an accident.
By looking at the indicator light 23, the nurse can recognize which patient has experienced an abnormal situation, allowing prompt treatment.

Although this embodiment shows the case where the bed alarm device is built into the nurse call/intercom system, it is also possible to install the bed alarm device independently.

In this case, the main difference in configuration from the above embodiment is that the connection point from the relay 315 inside the interface 3 to the interface section 31 is designated as a, which is the same as the intercom call line. The operation of the calling function as an intercom, the pressure sensor, and the timer are the same as in the above embodiment. however,
In the embodiment described above, the signal indicating that the patient is absent is transmitted to the alarm 211 inside the intercom base unit 2 by an independent system, but in this example, the signal is sent to the intercom transmission line for normal calling. Therefore, the intercom base unit cannot distinguish between an intercom call and a signal from the pressure-sensitive sensor, but it has the advantage of a simpler circuit configuration.

[Effects of the Invention] As is clear from the above embodiments, according to the hospital bed alarm device of the present invention, the intercom base unit installed in the nursing station and the intercom base unit connected to the intercom transmission line and connected to the patient room. A hospital bed alarm system consisting of an installed intercom handset includes a pressure-sensitive sensor installed in the bed in the hospital room to detect the patient's absence, and a timer connected to the pressure-sensitive sensor to measure the time of the patient's absence. This system consists of an alarm means that is controlled by a timer and generates a signal sound, so if a patient falls from a hospital bed or has an accident at night,
It is detected by a pressure-sensitive sensor installed in the hospital bed, and when a certain period of time is reached, an alarm is issued and the abnormal situation is displayed for which patient, allowing for quick response and highly reliable bedside alarms.

[Brief explanation of the drawing]

FIG. 1 is an external view showing the appearance of a hospital bed alarm system according to the present invention, FIG. 2 is a block diagram showing the internal structure, and FIG. 3 is a block diagram showing the structure of a conventional nurse call/intercom system. 1... Intercom slave unit, 2... Intercom base unit, 4... Intercom transmission line, 5... Pressure sensitive sensor, 211... Alarm device (alarm means), 313
……timer.

Claims (1)

[Claims] 1. In a hospital bed alarm system comprising an intercom base unit 2 installed in a nursing station, and an intercom slave unit 1 connected to the intercom base unit by an interphone transmission line 4 and installed in a hospital room, The device is composed of a pressure-sensitive sensor 5 installed in the pressure-sensitive sensor 5 to detect the patient's absence, a timer 313 connected to the pressure-sensitive sensor to measure the time of the patient's absence, and an alarm means 211 controlled by the timer to generate a signal sound. A hospital bed alarm device is characterized in that it automatically issues an alarm when a patient is absent for a preset period of time.