JP2021068978A - Nurse call system - Google Patents

Abstract

To provide a nurse call system that enables call connection in which call disconnection and deterioration of call quality are suppressed while guaranteeing security.SOLUTION: A nurse call system includes a nurse call slave unit 20, a nurse call master unit 30, a mobile terminal 90, a nurse call controller 40, an encrypted connection device 60, and a public network connection device 70, and the mobile terminal 90 is connected to a public network by wirelessly communicating with a base station 80 of a communication operator that provides a public network communication service, and is configured so as to be encrypted and connected with the encrypted connection device 60 in advance, displays a call screen using patient information added to a call signal when the call signal is received from the nurse call controller 40, and the nurse call controller 40 is configured so as to make call connection via the encrypted connection device 60 between the mobile terminal 90 that has selected to answer the call screen first and the nurse call slave unit 20 that is a caller.SELECTED DRAWING: Figure 1

Description

The present invention relates to a nurse call system, and more particularly to a nurse call system that communicates with a call from a patient via a public network.

In recent years, in response to a call from a nurse call slave unit provided for each bed in a hospital room, the call is notified to the mobile terminal carried by the nurse, and the mobile terminal can be used even if the called nurse is not at the nurse station. Nurse call systems that can be used and answered are widespread.

In such a nurse call system, in order to handle personal information of patients, an access point is installed in a hospital to call a mobile terminal carried by a nurse (for example, Patent Document 1, Patent). See Reference 2). More specifically, the call signal transmitted from the nurse call slave unit is transmitted to the nurse call controller, the mobile terminal information of the nurse in charge of the nurse call controller is acquired, transmitted to the private branch exchange, and the private branch exchange is used. The call is sent to the nurse's mobile terminal via the access point installed in the hospital. By using the access point installed in the hospital, the personal information of the patient is prevented from being leaked to the line outside the hospital, and the security is guaranteed.

Japanese Unexamined Patent Publication No. 2015-61226 Japanese Unexamined Patent Publication No. 2015-61228

However, in the conventional nurse call system using the access point installed in the hospital as described above, when the nurse crosses the communication range of the access point while talking on the mobile terminal, the call is disconnected. , There was a problem that the call quality deteriorated.

Therefore, a main object of the present invention is to provide a nurse call system that enables a call connection in which the occurrence of call disconnection and deterioration of call quality are suppressed while guaranteeing security.

The nurse call system according to the present invention includes a nurse call slave unit installed in each bed for a patient to call a nurse, a nurse call master unit installed in a nurse station to answer a call from a patient, and a nurse call master unit. A mobile terminal carried by a nurse to answer a patient's call, a nurse call controller that controls communication between a nurse call slave unit, a nurse call master unit, and a mobile terminal, and a nurse call controller on a public line. A public network connection device for connecting to a network and an encrypted connection device for providing an encrypted connection function between a nurse call controller and a mobile terminal are provided, and the mobile terminal provides a public network communication service. The nurse call controller is connected to the public network by wirelessly communicating with the base station of the telecommunications carrier, and is configured to enable encrypted connection with the encrypted connection device in advance. , Has a connection information table that stores patient information associated with the nurse call slave unit, nurse information associated with the patient, and mobile terminal information carried by the nurse, and a call signal from the nurse call slave unit. Is received, the nurse call master unit is called, and the connection information table is referenced to make an encrypted connection to the mobile terminal carried by the nurse corresponding to the patient operating the nurse call slave unit. It has a function of transmitting a call signal to which patient information corresponding to the nurse call slave unit is added via the device, and the mobile terminal is added to the call signal when the call signal is received from the nurse call controller. The call screen is displayed using the patient information, and the nurse call controller selects to answer the call screen first when the nurse call master unit does not answer, and the nurse call child of the caller. It is characterized in that it is configured to make a call connection with the machine via an encrypted connection device.

By having such a configuration, it is possible to communicate in the hospital using a public network. When using a public network, the base station for the mobile terminal to connect to the public network can communicate in a range wider than the communication range of the access point, so the connection destination of the access point is switched (hand). Over) The number of times is small, and it is possible to make a call without disconnecting the call or degrading the call quality. In addition, since the mobile terminal and the encrypted connection device are configured to enable an encrypted connection in advance, it is possible to perform communication with guaranteed security for personal information such as patient information.

Further, the encrypted connection device of the nurse call system according to the present invention is configured to set a communication connection session peculiar to the mobile terminal by accepting an authentication connection from the mobile terminal, and the nurse call controller is a nurse call. When a call signal is received from the slave unit, the connection information table is referred to and the communication connection by tunneling is established between the nurse call slave unit and the mobile terminal by connecting to the corresponding communication session of the encrypted connection device. It is preferably configured to be established.

By having such a configuration, not only encryption but also communication connection by tunneling can be performed, so that stronger security can be realized. Moreover, since a general-purpose device can be used, the cost can be reduced.

Further, the nurse call system according to the present invention is provided with a private branch exchange that manages the communication connection between the nurse call slave unit, the nurse call master unit, and the mobile terminal, and has a function of holding, transferring, and making a group call of the communication connection. It is preferably configured to provide.

With such a configuration, even if a nurse receives a nurse call, if it cannot be dealt with immediately, it can be handed over to another nurse. By handing over to another nurse, the nurse can respond quickly to the patient.

Further, the nurse call system according to the present invention manages a communication connection between a nurse call slave unit, a nurse call master unit, and a mobile terminal by using an exchange built on a cloud provided in a public network. The exchange built in the cloud is configured to enable encrypted connection to each of the public network connection device and the mobile terminal in advance, and holds, transfers, and makes a group call of the communication connection. It is preferably configured to provide functionality.

By having such a configuration, the nurse can respond quickly to the patient, and by using the exchange built on the cloud, the operating cost of the exchange can be reduced.

Further, it is preferable that the public network connection device of the nurse call system according to the present invention is configured to provide a pinhole firewall function by opening a dynamic port.

By having such a configuration, it is possible to open only the ports necessary for communication and perform communication. Therefore, the security level can be further improved, and it is possible to more effectively prevent a computer virus or the like from invading the network in the hospital.

Further, the nurse call controller of the nurse call system according to the present invention has a function of receiving a SIP format call signal from the nurse call slave unit and transmitting a BRI format call command, and a BRI format call control command. A function to send a SIP format call signal, a function to receive a BRI format call signal and transmit an RTP format call signal, and a function to receive an RTP format call signal and transmit a BRI format call signal. It has a function to convert a SIP format call signal into a BRI format call command and a function to convert a BRI format call command into a SIP format call signal between the nurse call controller and the encrypted connection device. A function to convert a SIP format call control signal into a BRI format call control command, a function to convert a BRI format call signal into an RTP format call signal, and a function to convert an RTP format call signal into a BRI format call. Even if a signal format converter having a function of converting to a signal is provided and the LAN system to which the nurse call controller is connected and the LAN system to which the encryption connection device is connected are completely separated by BRI connection. Good.

By having such a configuration, the communication between the nurse call controller and the signal format converter becomes analog format, and the LAN system to which the nurse call controller is connected and the LAN system to which the encryption connection device is connected are connected. Is completely separated. Therefore, it is possible to prevent the premises LAN from being invaded from the outside and realize stronger security.

According to the present invention, it is possible to provide a nurse call system that enables a call connection in which the occurrence of call disconnection and deterioration of call quality are suppressed while guaranteeing security.

The above-mentioned object, other object, feature and advantage of the present invention will be further clarified from the description of the embodiment for carrying out the following invention with reference to the drawings.

It is a block diagram of the nurse call system which concerns on 1st Embodiment of this invention. It is a block diagram of the nurse call controller which concerns on 1st Embodiment of this invention. It is a data flow diagram which shows the call and answer operation of the nurse call system which concerns on 1st Embodiment of this invention. It is a data flow diagram which shows the state which the nurse call slave unit and the mobile terminal are talking in the nurse call system which concerns on 1st Embodiment of this invention. FIG. 5 is a data flow diagram showing an operation when disconnecting a call from a mobile terminal when the nurse call slave unit and the mobile terminal are talking in the nurse call system according to the first embodiment of the present invention. It is a block diagram of the nurse call system which concerns on 2nd Embodiment of this invention. It is a data flow diagram which shows the call and answer operation of the nurse call system which concerns on 2nd Embodiment of this invention. It is a block diagram of the nurse call system which concerns on 3rd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments shown below are examples that embody the present invention, and do not limit the technical scope of the present invention.

(First Embodiment)
1. 1. Configuration of Nurse Call System The nurse call system 10 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a configuration diagram of a nurse call system according to the first embodiment of the present invention.

The nurse call system 10 according to the first embodiment includes a nurse call slave unit 20, a corridor light 22, a nurse call master unit 30, a nurse call controller 40, a private branch exchange 50, and an encrypted connection device 60. A public network connection device 70 and a mobile terminal 90 are provided.

The nurse call slave unit 20 is installed in each bed for the patient to call a nurse. The nurse call handset 20 includes, for example, a hand-held handset, a grip button, a call button, and the like. For example, when the nurse call slave unit 20 includes a grip button, the nurse call slave unit 20 includes a call grip button 20a and a plate slave unit 20b provided with a microphone and a speaker for talking.

The corridor light 22 is installed in each hospital room, and a plurality of nurse call slave units 20 are connected to each other. The corridor light 22 includes a notification light 22a that lights up when a call signal is transmitted from the connected nurse call slave unit 20, and a patient information display unit 22b that displays patient information in the hospital room. The corridor light 22 receives the call signal from the nurse call slave unit 20 and transmits the call signal to the nurse call controller 40 via the premises LAN.

The nurse call master unit 30 is installed at the nurse station to answer the call from the patient. The nurse call master unit 30 includes a hand set 32 for answering the call and a display unit 34 for displaying patient information and the like.

The nurse call controller 40 controls communication between the nurse call slave unit 20, the nurse call master unit 30, and the mobile terminal 90. The nurse call controller 40 receives the call signal transmitted from the nurse call slave unit 20 via the corridor light 22, and transmits the call signal to the nurse call master unit 30 and the mobile terminal 90.

The private branch exchange 50 manages the communication connection between the nurse call slave unit 20, the nurse call master unit 30, and the mobile terminal 90. The private branch exchange 50 is configured to provide functions for holding, transferring, and making group calls for communication connections. As the private branch exchange 50, for example, an IP exchange that operates based on the Internet protocol can be used. The private branch exchange 50 is used, for example, when notifying the mobile terminal 90 of a call signal from the nurse call slave unit 20 and responding to it. The private branch exchange 50 is used, for example, to make an interconnection when making an extension call with a nurse via the nurse call master unit 30 or another mobile terminal 90.

The encrypted connection device 60 provides an encrypted connection function between the nurse call controller 40 and the mobile terminal 90. The encrypted connection device 60 encrypts communication packets transmitted and received between the encrypted connection device 60 and the mobile terminal 90. In order to enable an encrypted connection between the encrypted connection device 60 and the mobile terminal 90, the mobile terminal 90 needs to be able to connect to the encrypted connection device 60 in advance. Therefore, the encrypted connection device 60 is configured to set a communication session unique to the mobile terminal 90 by accepting an authentication connection from the mobile terminal 90.

Further, the encrypted connection device 60 preferably has an encryption function at the transport layer or the session layer. The encryption function at the transport layer is realized by, for example, encryption by IPSec-VPN. When using IPsec-VPN encryption, communication between the encrypted connection device 60 and the mobile terminal 90 is performed by establishing an encrypted connection between the encrypted connection device 60 and the mobile terminal 90 in advance. Is automatically encrypted, so nurses and others can communicate without being aware that the patient information is encrypted.
The encryption function at the session layer is realized by, for example, SSL / TLS encryption. When using SSL / TLS encryption, by constructing an encrypted connection environment between the encrypted connection device 60 and the mobile terminal 90 in advance, the encrypted connection device 60 and the mobile terminal 90 can be connected to each other. Since the communication between the two is automatically encrypted, the nurse or the like can communicate without recognizing that the patient information is encrypted.

The public line network connection device 70 connects the nurse call controller 40 to the public line network. The public network connection device 70 is a connection device used when connecting from a network in a hospital to a public network.

The base station 80 is installed by a telecommunications carrier that provides a public network communication service. By performing wireless communication between the mobile terminal 90 and the base station 80, the mobile terminal 90 is connected to the public network. It is preferred that a single base station 80 covers the entire area of the hospital. Further, a plurality of base stations 80 may cover the entire range of the hospital.

The mobile terminal 90 is carried and used by a nurse to answer a patient's call. The mobile terminal 90 can use, for example, a smartphone, and has a display unit 92 having a touch panel as an operation unit and a call unit (not shown). The mobile terminal 90 can make a call with a patient via the nurse call slave unit 20, and can make an extension call with a nurse via the nurse call master unit 30 or another mobile terminal 90.

An application or the like for establishing a communication connection session with the encrypted connection device 60 is pre-installed in the mobile terminal 90, and is configured to enable an encrypted connection with the encrypted connection device 60. As a result, the mobile terminal 90 is configured to enable an encrypted connection with the encrypted connection device 60 via the public network connection device 70.

Further, when the mobile terminal 90 receives the call signal from the nurse call controller 40, the mobile terminal 90 displays the call screen on the display unit 92 of the mobile terminal 90 using the patient information added to the call signal. Then, when the nurse call master unit does not answer the call from the nurse call controller 40, the mobile phone selected to answer the call screen displayed on the display unit 92 of the mobile terminal 90 first. The terminal 90 and the caller's nurse call slave unit 20 are configured to make a call connection via an encrypted connection device. The information displayed on the display unit 92 of the mobile terminal 90 is, for example, a patient name, a room number, and a bed number, and URL information for referring to a server in the hospital to obtain more detailed information is displayed. You may do so.

Next, the nurse call controller 40 will be described in more detail with reference to FIG. FIG. 2 is a block diagram of the nurse call controller according to the first embodiment of the present invention.
The nurse call controller 40 stores a nurse call controller interface (hereinafter referred to as a nurse call controller I / F) 42 for transmitting and receiving a call signal and the like from the nurse call slave unit 20, a nurse call controller CPU 44, and a memory. A unit 46 is provided.

The nurse call controller I / F 42 is, for example, a communication unit that transmits and receives a call signal from the nurse call slave unit 20. Further, the nurse call controller CPU 44 manages, for example, transmission / reception of information stored in the storage unit 46, connection processing to the nurse call master unit 30 and a predetermined mobile terminal 90 for a call of the nurse call slave unit 20, and the like. Do.

The storage unit 46 includes a connection information table 46a in which patient information associated with the nurse call slave unit 20, nurse information associated with the patient, and mobile terminal information carried by the nurse are stored. When the nurse call controller 40 receives the call signal from the nurse call slave unit 20, the nurse call controller 40 calls the nurse call master unit 30 and refers to the connection information table 46a of the storage unit 46 to call the nurse call slave unit 20. A call signal to which the patient information corresponding to the nurse call slave unit 20 is added is transmitted to the mobile terminal 90 carried by the nurse corresponding to the operating patient via the encrypted connection device 60.

Further, when the nurse call controller 40 receives the call signal from the nurse call slave unit 20, the nurse call controller 40 refers to the connection information table 46a of the storage unit 46 and connects to the corresponding communication session of the encrypted connection device 60. It is preferable that the nurse call slave unit 20 and the mobile terminal 90 are configured to establish a communication connection by tunneling. Tunneling is communication by encapsulating communication packets. By encapsulating communication packets, stronger security can be realized.

2. Operation of the nurse call system (1) Pre-authentication The mobile terminal 90 carried by the nurse can be used by logging in to the encrypted connection device 60 in advance. Therefore, for example, an application for establishing a communication connection session with the encrypted connection device 60 is installed in the mobile terminal 90, and when this application is executed, the encrypted connection device 60 is portable. Accepts the authentication connection from the terminal 90. The encrypted connection device 60 is configured to set a communication connection session unique to the mobile terminal 90 by accepting an authentication connection from the mobile terminal 90. When the mobile terminal 90 is authenticated and connected to the encrypted connection device 60, the communication between the encryption device 60 and the mobile terminal 90 is encrypted and becomes a secure communication area.

(2) Call / Response The response operation by the mobile terminal 90, which receives the call signal transmitted by the nurse call slave unit 20 and selects to respond first, will be described with reference to FIG. FIG. 3 is a data flow diagram showing a call and answer operation of the nurse call system according to the first embodiment of the present invention.

First, the patient operates the nurse call slave unit 20 to call the nurse. When the nurse call slave unit 20 is operated, a call signal is transmitted to the nurse call controller 40 via the corridor light 22. As the calling signal, for example, a digital signal in SIP format (Session Initiation Protocol) is used.
When the corridor light 22 receives the call signal from the nurse call slave unit 20, the corridor light 22 turns on the notification light 22a. Further, the nurse call controller 40 acquires patient information corresponding to the nurse call slave unit 20 from the storage unit 46 based on the received call signal. Further, the nurse call controller 40 acquires the nurse information associated with the patient information from the storage unit 46, and acquires the nurse's mobile terminal information. Then, the nurse call controller 40 transmits the acquired patient information to the nurse call master unit 30 (call command), and also transmits the acquired patient information and the nurse's mobile terminal information to the private branch exchange 50 (call control command). (Start calling)).
Next, the nurse call master unit 30 causes the received patient information to be displayed on the display unit 34 of the nurse call master unit 30. Further, the private branch exchange 50 transmits the received patient information and the nurse's mobile terminal information to the encrypted connection device 60.
Next, the encrypted connection device 60 encrypts the received patient information and transmits it to the public network connection device 70.
Next, the public network connection device 70 transmits the encrypted patient information to the nurse's mobile terminal 90 via the public network.
Next, the nurse's mobile terminal 90 receives the patient information transmitted from the public network connection device 70 by wirelessly communicating with the base station 80 of the telecommunications carrier that provides the public network communication service. Then, the mobile terminal 90 decodes the received patient information and displays it on the display unit 92 of the mobile terminal 90 to notify the nurse that the nurse call slave unit 20 has been operated by the patient.

As a response method, a case where the mobile terminal 90 carried by the nurse who has selected to respond first will respond will be described.
First, the nurse operates the display unit 92 of the mobile terminal 90. The mobile terminal 90 transmits a response signal to the public network connection device 70 via the base station 80. At this time, the response signal is encrypted by the mobile terminal 90.
Next, the public network connection device 70 transmits a response signal to the encrypted connection device 60.
Next, the encrypted connection device 60 decodes the response signal and transmits it to the private branch exchange 50.
Next, the private branch exchange 50 transmits a response signal to the nurse call controller 40 (call control command (call cancel)).
Next, the nurse call controller 40 transmits the response signal received to the nurse call slave unit 20 via the corridor light 22. When the corridor light 22 receives the response signal, the indicator light 22a is turned off. Then, when the nurse call slave unit 20 receives the response signal, a communication path between the nurse call slave unit 20 and the mobile terminal 90 is established, and a call can be made between the nurse call slave unit 20 and the mobile terminal 90. Become.
Further, when the nurse call controller 40 transmits the response signal to the nurse call slave unit 20, the nurse call controller 40 transmits a call stop signal to the nurse call master unit 30 (call control command (call cancel)). When the nurse call master unit 30 receives the call stop signal, the nurse call master unit 30 stops calling the nurse call master unit 30.

When the nurse call master unit 30 responds, a response signal is transmitted from the nurse call master unit 30 to the nurse call controller 40, and the nurse call controller 40 sends the response signal to the nurse call slave unit 20 via the corridor light 22. Send a response signal. Further, the nurse call controller 40 simultaneously transmits a call stop signal to the mobile terminal 90, and when the mobile terminal 90 receives the call stop signal, the mobile terminal 90 stops the call.

(3) Call The operation of making a call between the nurse call slave unit 20 and the mobile terminal 90 will be described with reference to FIG. FIG. 4 is a data flow diagram showing a state in which the nurse call slave unit and the mobile terminal are talking in the nurse call system according to the first embodiment of the present invention.

The operation of transmitting voice from the nurse call slave unit 20 to the mobile terminal 90 will be described.
First, the patient speaks to the plate handset 20b equipped with the microphone and speaker of the nurse call handset 20 to talk to the nurse. The nurse call slave unit 20 transmits the patient's voice information to the nurse call controller 40 via the corridor light 22 using a real-time transfer protocol (hereinafter referred to as RTP).
Next, the nurse call controller 40 transmits the received voice information to the private branch exchange 50.
Next, the private branch exchange 50 transmits the received voice information to the encrypted connection device 60.
Next, the encrypted connection device 60 encrypts the received voice information and transmits it to the public network connection device 70.
Next, the public network connection device 70 transmits the encrypted voice information to the mobile terminal 90 via the public network.
Finally, the mobile terminal 90 decrypts the encrypted voice information and outputs the voice from the speaker (not shown) of the mobile terminal 90.

The operation of transmitting voice from the mobile terminal 90 to the nurse call slave unit 20 will be described.
First, the nurse speaks to the calling unit (not shown) of the mobile terminal 90 in order to talk to the patient. The mobile terminal 90 uses RTP to transmit the voice information of the nurse to the public network connection device 70 via the public network. At this time, the mobile terminal 90 encrypts the voice information.
Next, the public network connection device 70 transmits the encrypted voice information to the encrypted connection device 60.
Next, the encrypted connection device 60 decrypts the encrypted voice information and transmits it to the private branch exchange 50.
Next, the private branch exchange 50 transmits the received voice information to the nurse call controller 40.
Finally, the nurse call controller 40 transmits to the nurse call slave unit 20 via the corridor light 22. Sound is output from the speaker (not shown) of the plate slave unit 20b of the nurse call slave unit 20.

(4) Call disconnection As a call disconnection method, a case where a call is being made between the nurse call slave unit 20 and the mobile terminal 90 will be described with reference to FIG. FIG. 5 is a data flow diagram showing an operation when disconnecting a call from the mobile terminal when the nurse call slave unit and the mobile terminal are talking in the nurse call system according to the first embodiment of the present invention. ..

First, the nurse operates the display unit 92 of the mobile terminal 90. The mobile terminal 90 transmits a call disconnection signal to the public network connection device 70 via the base station 80. At this time, the call disconnection signal is encrypted by the mobile terminal 90.
Next, the public network connection device 70 transmits a call disconnection signal to the encrypted connection device 60.
Next, the encrypted connection device 60 decodes the call disconnection signal and transmits it to the private branch exchange 50.
Next, the private branch exchange 50 transmits a call disconnection signal to the nurse call controller 40 (call control command (call cancel)).
Next, the nurse call controller 40 transmits the received call disconnection signal to the nurse call slave unit 20.
Finally, when the nurse call slave unit 20 receives the call disconnection signal, the communication path between the nurse call slave unit 20 and the mobile terminal 90 is disconnected, and the call is disconnected between the nurse call slave unit 20 and the mobile terminal 90. It becomes.

The present invention uses a public network to connect a nurse call slave unit 20 and a mobile terminal 90 carried by a nurse. When the public network is used, the base station 80 for the mobile terminal 90 to connect to the public network can communicate in a range wider than the communication range of the access point conventionally used. Therefore, the number of times the access point connection destination is switched (handover) is small, and the call can be made without disconnecting the call or deteriorating the call quality. Further, since the mobile terminal 90 and the encrypted connection device 60 are configured to enable an encrypted connection in advance, it is possible to perform communication with guaranteed security for personal information such as patient information. Furthermore, since it is not necessary to install an access point, the introduction and maintenance cost of the access point can be reduced.

Further, in the present invention, the encrypted connection device 60 installed in the hospital and the mobile terminal 90 carried by the nurse are encrypted and connected in advance, and the mobile terminal 90 is connected when the nurse call slave unit 20 is called. Since a unique communication session is established and patient information is transmitted, security-guaranteed communication can be performed.

In the present embodiment, the private branch exchange 50 is provided, but when the nurse call controller 40 has a function of transmitting a ringing signal to a plurality of mobile terminals 90, it is not essential to include the private branch exchange 50.

Further, in the present embodiment, the encrypted connection device 60 has been described as being provided separately between the private branch exchange 50 and the public network connection device 70, but is provided integrally with the public line network connection device 70. You may do so.

Further, in the present embodiment, a gateway or a firewall may be provided between the network in the hospital and the connection to the public network via the public network connection device 70.

Further, the public network connection device 70 is preferably configured to open a dynamic port to provide a pinhole firewall function. By having such a configuration, the security level can be further improved, and it is possible to more effectively prevent a computer virus or the like from invading the network in the hospital.

(Second Embodiment)
1. 1. Configuration of Nurse Call System The nurse call system 10A according to the second embodiment of the present invention will be described with reference to FIG. FIG. 6 is a block diagram of a nurse call system according to a second embodiment of the present invention. The nurse call system 10A according to the second embodiment of the present invention includes a nurse call slave unit 20, a corridor light 22, a nurse call master unit 30, a nurse call controller 40, an exchange 52 on the cloud, and a code. The system connection device 60, a public network connection device 70, and a mobile terminal 90 are provided.
The nurse call system 10A according to the second embodiment of the present invention is different from the nurse call system 10 according to the first embodiment described above in that the exchange is provided on the cloud. Therefore, in the following, the function and operation of the exchange 52 built on the cloud, which is a difference, will be described.

The exchange (cloud PBX) 52 built on the cloud is built on the cloud provided in the public network. The exchange 52 built on the cloud is configured to manage the communication connection between the nurse call slave unit 20, the nurse call master unit 30, and the mobile terminal 90. The exchange 52 built on the cloud is connected to the encrypted connection device 60 in advance, and can make an encrypted connection to each of the public network connection device 70 and the mobile terminal 90 connected to the encrypted connection device 60. It is configured to provide functions for holding, transferring, and making group calls for communication connections.

2. Operation of the nurse call system (1) Pre-authentication The mobile terminal 90 carried by the nurse logs in to the encrypted connection device 60 in advance in the same manner as the nurse call system 10 described above. Further, the exchange 52 built on the cloud logs in to the encrypted connection device 60. By authenticating the mobile terminal 90 to the encrypted connection device 60 and authenticating the exchange 52 to the encrypted connection device 60, the communication between the encryption device 60, the exchange 52, and the mobile terminal 90 is encrypted. It becomes a secure communication area.

(2) Call / Response The operation when the call signal transmitted by the nurse call slave unit 20 is received by the mobile terminal 90 and the mobile terminal makes a call first will be described with reference to FIG. 7. FIG. 7 is a data flow diagram showing a call and answer operation of the nurse call system according to the second embodiment of the present invention.

First, the patient operates the nurse call slave unit 20 to call the nurse. When the nurse call slave unit 20 is operated, a call signal is transmitted to the nurse call controller 40 via the corridor light 22. As the calling signal, for example, a digital signal in SIP format (Session Initiation Protocol) is used.
Next, when the corridor light 22 receives the call signal from the nurse call slave unit 20, the corridor light 22 turns on the notification light 22a. Further, the nurse call controller 40 acquires patient information corresponding to the nurse call slave unit 20 from the storage unit 46 based on the received call signal. Further, the nurse call controller 40 acquires the nurse information associated with the patient information from the storage unit 46, and acquires the nurse's mobile terminal information. Then, the nurse call controller 40 transmits the acquired patient information to the nurse call master unit 30 (call command), and also transmits the acquired patient information and the nurse's mobile terminal information to the encrypted connection device 60 (call). Control command (call start).
Next, the nurse call master unit 30 causes the received patient information to be displayed on the display unit 34 of the nurse call master unit 30. Further, the encrypted connection device 60 encrypts the received patient information and the nurse's mobile terminal information and transmits the encrypted connection device 60 to the public network connection device 70.
Next, the public network connection device 70 transmits the encrypted patient information and the nurse's mobile terminal information to the exchange 52 constructed on the cloud that has already been connected. The exchange 52 built on the cloud decrypts the encrypted nurse's mobile terminal information and transmits the encrypted patient information to the connected nurse's mobile terminal 90 via the public network. To do.
Next, the nurse's mobile terminal 90 receives the encrypted patient information by wirelessly communicating with the base station 80 of the telecommunications carrier that provides the public network communication service. Then, the received patient information is displayed on the display unit 92 of the mobile terminal 90, and the nurse is notified that the nurse call slave unit 20 has been operated by the patient.

As a response method, a case where the mobile terminal 90 carried by the nurse responds first will be described.
First, the nurse operates the display unit 92 of the mobile terminal 90. The mobile terminal 90 transmits a response signal to the exchange 52 constructed on the cloud via the base station 80. At this time, the mobile terminal 90 encrypts the response signal.
Next, the exchange 52 built on the cloud transmits the response signal to the encrypted connection device 60.
Next, the encrypted connection device 60 decodes the response signal and transmits it to the nurse call controller 40 (call control command (call cancel)).
Next, the nurse call controller 40 transmits the response signal received to the nurse call slave unit 20 via the corridor light 22.
Next, when the corridor light 22 receives the response signal, the indicator light 22a is turned off. Then, when the nurse call slave unit 20 receives the response signal, a communication path between the nurse call slave unit 20 and the mobile terminal 90 is established, and a call can be made between the nurse call slave unit 20 and the mobile terminal 90. Become.
Further, when the nurse call controller 40 transmits the response signal to the nurse call slave unit 20, the nurse call controller 40 transmits a call stop signal to the nurse call master unit 30 (call control command (call cancel)). When the nurse call master unit 30 receives the call stop signal, the nurse call master unit 30 stops calling the nurse call master unit 30.

When the nurse call master unit 30 responds first, when the response signal is transmitted from the nurse call master unit 30 to the nurse call controller 40, the nurse call controller 40 uses the corridor light 22 to perform the nurse call. A response signal is transmitted to the slave unit 20. Further, the nurse call controller 40 simultaneously transmits a call stop signal to the mobile terminal 90, and when the mobile terminal 90 receives the call stop signal, the mobile terminal 90 stops the call.

(3) Call The operation of transmitting voice from the nurse call slave unit 20 to the mobile terminal 90 will be described.
First, the patient speaks to the plate handset 20b equipped with the microphone and speaker of the nurse call handset 20 to talk to the nurse. The nurse call slave unit 20 transmits the voice information of the patient to the nurse call controller 40 via the corridor light 22 using RTP.
Next, the nurse call controller 40 transmits the received voice information to the encrypted connection device 60.
Next, the encrypted connection device 60 encrypts the received voice information and transmits the received voice information to the public network connection device 70.
Next, the public network connection device 70 transmits the encrypted voice information via the public network to the exchange 52 constructed on the cloud.
Next, the exchange 52 built on the cloud transmits the encrypted voice information to the mobile terminal 90 via the public network.
Finally, the mobile terminal 90 decrypts the encrypted voice information and outputs the voice from the speaker (not shown) of the mobile terminal 90.

The operation of transmitting voice from the mobile terminal 90 to the nurse call slave unit 20 will be described.
First, the nurse speaks to the calling unit (not shown) of the mobile terminal 90 in order to talk to the patient. The mobile terminal 90 uses RTP to transmit the voice information of the nurse to the exchange 52 constructed on the cloud via the public network. At this time, the mobile terminal 90 encrypts the voice information.
Next, the exchange 52 built on the cloud transmits the encrypted voice information to the public network connection device 70.
Next, the public network connection device 70 transmits the encrypted voice information to the encrypted connection device 60.
Next, the encrypted connection device 60 decrypts the encrypted voice information and transmits it to the nurse call controller 40.
Finally, the nurse call controller 40 transmits to the nurse call slave unit 20 via the corridor light 22. Sound is output from the speaker (not shown) of the plate slave unit 20b of the nurse call slave unit 20.

(4) Call disconnection As a call disconnection method, a case where a call is being made between the nurse call slave unit 20 and the mobile terminal 90 will be described.

First, the nurse operates the display unit 92 of the mobile terminal 90. The mobile terminal 90 transmits a call disconnection signal to the exchange 52 constructed on the cloud via the base station 80. At this time, the call disconnection signal is encrypted by the mobile terminal 90.
Next, the exchange 52 built on the cloud transmits the call disconnection signal to the public network connection device 70.
Next, the public network connection device 70 transmits a call disconnection signal to the encrypted connection device 60.
Next, the encrypted connection device 60 decodes the call disconnection signal and transmits it to the nurse call controller 40.
Next, the nurse call controller 40 transmits the call disconnection signal received to the nurse call slave unit 20 via the corridor light 22.
Finally, when the nurse call slave unit 20 receives the call disconnection signal, the communication path between the nurse call slave unit 20 and the mobile terminal 90 is disconnected, and the call is disconnected between the nurse call slave unit 20 and the mobile terminal 90. It becomes.

In the present embodiment, since the exchange 52 on the cloud is used instead of the private branch exchange 50 in the first embodiment, the operating cost of the exchange can be reduced.

(Third Embodiment)
1. 1. Configuration of Nurse Call System Finally, the nurse call system 10B according to the third embodiment of the present invention will be described with reference to FIG. FIG. 8 is a configuration diagram of a nurse call system according to a third embodiment of the present invention.
In the first embodiment, the call signal or the like is a SIP format (Session Initiation Protocol) digital signal, and the call signal is an RTP format signal. However, the signal format converter 48 is used as the nurse call controller 40 and the premises exchange. The signal format converter 40 and the signal format converter 48 may be provided between the 50 and the BRI format (Basic Rate Interface) analog format.

In this embodiment, the nurse call controller 40 receives a function of receiving a SIP format call signal from the nurse call slave unit 20 and transmitting a BRI format call command, and a BRI format call control command. A function to transmit a SIP format call signal, a function to receive a BRI format call signal and transmit an RTP format call signal, and a function to receive an RTP format call signal and transmit a BRI format call signal. Have.

Further, between the nurse call controller 40 and the private branch exchange 50, there is a function of converting a SIP format call signal into a BRI format call command and a function of converting a BRI format call command into a SIP format call signal. , A function to convert a SIP format call control signal to a BRI format call control command, a function to convert a BRI format call signal to an RTP format call signal, and a function to convert an RTP format call signal to a BRI format call signal. It is provided with a signal format converter 48 having a function of performing.

In this way, by having the signal format converter 48, the LAN system to which the nurse call controller 40 is connected and the LAN system to which the encryption connection device 60 is connected can be completely separated by the BRI connection. , Stronger security can be realized.

In the above embodiment, for the first embodiment including the private branch exchange, a signal format converter 48 is provided between the nurse call controller 40 and the private branch exchange 50, and the nurse call controller 40 and the signal format converter are provided. Although the BRI connection is made between the 48 and the nurse call controller 40, in the second embodiment using the exchange 52 built on the cloud, the signal format is similarly between the nurse call controller 40 and the encrypted connection device 60. A switch 48 may be provided to make a BRI connection between the nurse call controller 40 and the signal format converter 48, and the same effect can be obtained.

As described above, the embodiments of the present invention are disclosed by the above description, but the present invention is not limited thereto.
That is, various changes can be made to the above-described embodiments with respect to the mechanism, shape, material, quantity, position, arrangement, etc., without departing from the scope of the technical idea and purpose of the present invention. And they are included in the present invention.

For example, in the above-described embodiment of the present invention, the mobile terminal 90 is configured to enable an encrypted connection with the encrypted connection device 60 in advance, but the mobile terminal 90 is connected to the encrypted connection device 60. It is not always necessary to have a constant connection between them. For example, in the mobile terminal 90, when the connection request is notified by the push notification, the mobile terminal 90 establishes a session with the encrypted connection device 60, encrypts the patient information, and the mobile terminal from the encrypted connection device 60. It may be transmitted to 90 to notify the mobile terminal 90 carried by the nurse.

Further, in the above embodiment, the case where the nurse call slave unit 20 is provided with a microphone and a speaker and a voice call is made between the nurse call master unit 30 and the mobile terminal 90 carried by the nurse has been described. A video camera for capturing a patient may be provided on the call slave unit 20 side, and the video information of the video camera may be transmitted to the nurse call master unit 30 or the mobile terminal 90 carried by the nurse together with the audio information.

10 Nurse call system of the first embodiment 10A Nurse call system of the second embodiment 10B Nurse call system of the third embodiment 20 Nurse call slave unit 22 Corridor light 22a Notification light 22b Patient information display unit 30 Nurse call parent Machine 32 Handset 34 Display 40 Nurse call controller 42 Nurse call controller I / F
44 Nurse call controller CPU
46 Storage unit 46a Connection information table 48 Signal format converter 50 Private branch exchange 52 Exchange built on the cloud 60 Cryptographic connection device 70 Public network connection device 80 Base station 90 Mobile terminal 92 Display unit N Private branch LAN

Claims (6)

A nurse call handset installed on each bed for the patient to call a nurse,
A nurse call master unit installed at the nurse station to answer calls from patients,
A mobile terminal carried by a nurse to answer a patient's call,
A nurse call controller that controls communication between the nurse call slave unit, the nurse call master unit, and the mobile terminal.
A public network connection device that connects the nurse call controller to the public network,
An encrypted connection device that provides an encrypted connection function between the nurse call controller and the mobile terminal,
With
The mobile terminal is connected to the public network by wirelessly communicating with a base station of a telecommunications carrier that provides a public network communication service, and is encrypted in advance with the encrypted connection device. Configured to connect,
The nurse call controller has a connection information table in which patient information associated with the nurse call slave unit, nurse information associated with the patient, and mobile terminal information carried by the nurse are stored. , When the call signal from the nurse call slave unit is received, the nurse call master unit is called, and the connection information table is referred to, and the nurse corresponding to the patient operating the nurse call slave unit is operated. Has a function of transmitting a call signal to which the patient information corresponding to the nurse call slave unit is added via the encrypted connection device to the mobile terminal carried by the child.
When the mobile terminal receives a call signal from the nurse call controller, the mobile terminal displays a call screen using the patient information added to the call signal, and the nurse call controller is such that the nurse call master unit uses the patient information. When not answering, a call connection is made between the mobile terminal selected to answer the call screen first and the nurse call slave unit of the caller via the encrypted connection device. A nurse call system configured in. The encrypted connection device is configured so that a communication connection session peculiar to the mobile terminal is set by accepting an authentication connection from the mobile terminal.
When the nurse call controller receives a call signal from the nurse call slave unit, the nurse call controller refers to the connection information table and connects to the corresponding communication session of the encrypted connection device to connect to the corresponding communication session of the encrypted connection device. The nurse call system according to claim 1, wherein a communication connection by tunneling is established between the machine and the mobile terminal. A private branch exchange that manages a communication connection between the nurse call slave unit, the nurse call master unit, and the mobile terminal is provided, and is configured to provide functions for holding, transferring, and making a group call of the communication connection. The nurse call system according to claim 1 or 2. It is configured to manage the communication connection between the nurse call slave unit, the nurse call master unit, and the mobile terminal by using an exchange built on the cloud provided in the public network.
The exchange built on the cloud is configured in advance so that an encrypted connection can be made to each of the public network connection device and the mobile terminal, and has a function of holding, transferring, and making a group call of a communication connection. The nurse call system according to claim 1 or 2, which is configured to provide. The nurse call system according to claim 1 to 4, wherein the public network connection device is configured to open a dynamic port to provide a pinhole firewall function. The nurse call controller has a function of receiving a SIP format call signal from the nurse call slave unit and transmitting a BRI format call command, and receiving a BRI format call control command to transmit a SIP format call signal. It has a function to transmit, a function to receive a BRI format call signal and transmit an RTP format call signal, and a function to receive an RTP format call signal and transmit a BRI format call signal.
Between the nurse call controller and the encrypted connection device, a function of converting a SIP format call signal into a BRI format call command, a function of converting a BRI format call command into a SIP format call signal, and a function of converting the BRI format call signal into a SIP format call signal. A function to convert a SIP format call control signal into a BRI format call control command, a function to convert a BRI format call signal into an RTP format call signal, and a function to convert an RTP format call signal into a BRI format call signal. Equipped with a signal format converter with functions
The nurse according to any one of claims 1 to 5, wherein the LAN system to which the nurse call controller is connected and the LAN system to which the encrypted connection device is connected are completely separated by a BRI connection. Call system.

Images