JP2015054193A - Patient monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a patient monitoring system which can transmit information on conditions and status of a patient directly and visually.SOLUTION: A patient monitoring system has: a plurality of cameras which capture images of a patient; a display processing device 120 which receives the images captured by the plurality of cameras through a network line 160 to process the received images; a display 110 which collectively displays the images captured by the plurality of cameras processed by the display processing device; and an operation instruction device 130 which gives an instruction of an image display state to be displayed on a display unit to the display processing device. The operation instruction device 130 selects a camera image which is to be displayed on the display unit from the images captured by the plurality of cameras and the display position and transmits them to the display processing device 120 as display instruction signals.

Description

  The present invention relates to a patient monitoring system that monitors the condition of a patient in a hospital or the like.

  In hospitals and the like, it is necessary to centrally monitor the health status of a plurality of patients. As a technique related to this, Patent Document 1 discloses a system that evaluates a patient's health condition, generates a health condition indicator for the patient, and displays the health condition indicator on a display device. Having a visual gradient configured as follows. Patent Document 2 describes a configuration in which a bimetal sensor that individually detects patient biometric information is installed in a hospital room, safety information of each patient is determined from data of each bimetal sensor, and is displayed on a monitor in a centralized manner. Yes.

JP 2009-291606 A JP 2010-284245 A

  In the intensive care unit (ICU: Intensive Care Unit) set up in a critical care center, etc., not only the health status (measured value) of each patient but also the condition (posture) and complexion (for example, staff stations) Therefore, it is desirable that the staff can centrally monitor. In Patent Document 1, in order to visually convey a patient's health condition (for example, measured values such as heart rate, blood pressure, and body temperature), a health condition indicator is generated and displayed. Moreover, in the said patent document 2, it is set as the structure which detects a patient's respiration rate with a pressure detection bimetal sensor, and conveys it as safety information. However, these are measured values of the patient's health, and are not information that directly conveys the patient's condition (posture on the bed) and facial color. In particular, in the ICU, there is a possibility that the patient's condition may change suddenly (such as violence or falling from the bed). The configurations of Patent Documents 1 and 2 cannot cope with this.

  An object of the present invention is to provide a patient monitoring system that can directly and visually convey patient condition and facial color information.

  In order to solve the above problems, the configuration described in the claims is adopted. For example, a patient monitoring system according to the present invention includes a plurality of cameras that capture images of a patient, a display process that receives images captured by the plurality of cameras via a network line, and processes the received images. And an operation instruction device for instructing the display processing device to display a video display state to be displayed on the display. The operation instruction device includes: The camera image to be displayed on the display and the display position thereof are selected from the images of a plurality of cameras and transmitted to the display processing device as a display instruction signal.

  According to the present invention, the staff can centrally monitor the condition of a plurality of patients by video while staying at the staff station, and can quickly perform a treatment on a patient whose condition has suddenly changed.

1 is an overall configuration diagram showing an embodiment of a patient monitoring system according to the present invention. The figure which shows the example of a screen which performs video display allocation by the operation instruction apparatus 130. FIG. The figure which shows the example of a screen which performs the display character input by the operation instruction apparatus. The flowchart which shows the analysis procedure of the patient image | video in the display processing apparatus 120. FIG.

  FIG. 1 is an overall configuration diagram showing an embodiment of a patient monitoring system according to the present invention. The patient monitoring system 100 includes a display 110 installed in a staff station, a display processing device 120, an operation instruction device 130, cameras 151a to 151p installed in the respective beds 150a to 150p, and voice microphones 152a to 152p. .

  The cameras 151a to 151p capture images (conditions and facial colors) of the patients 153a to 153p to be monitored. The voice microphones 152a to 152p collect the voices of the patients 153a to 153p. The video and audio signals acquired by the cameras 151a to 151p and the audio microphones 152a to 152p are appropriately compressed and transmitted to the display processing device 120 and the operation instruction device 130 via the network line 160 as patient video / audio data.

  In the display processing device 120, the video receiving unit 124 receives the transmitted video / audio data and performs a decoding process as appropriate. The display processing unit 121 divides and displays each received camera image on the display 110. On the display 110, camera images 111a to 111p and character information (such as bed numbers) 112a to 112p related to the images are displayed, and the staff 140 monitors them.

  At this time, the instruction receiving unit 123 of the display processing device 120 receives the display instruction signal (the number of video divisions, the video display position, and the character information related to the video) from the operation instruction device 130, and the display processing unit 121 displays the display accordingly. Set conditions. At this time, the sound collected from the sound microphones 152a to 152p can be output from a speaker (not shown) of the display 110.

  The video analysis unit 122 detects a temporal change amount of each patient video in the received camera video (that is, a motion amount of the patient's body). When the amount of change is equal to or greater than the threshold, a warning character (Warning) 113 is displayed on the video of the patient on the display 110 via the display processing unit 121. This notifies the staff 140 that there is a change in the condition of the patient. In the example of FIG. 1, there is a possibility that the patient on the bed 16 may fall from the bed, and a warning character is displayed.

  In the operation instruction device 130, the video reception unit 132 receives the video data transmitted from the cameras 151a to 151p via the network line 160, and appropriately performs a decoding process. The display setting screen 131 displays all the received camera images, and the staff 140 operates to instruct selection of images to be displayed on the display 110, the number of screen divisions, and display positions. In addition, character information (such as bed numbers) 112a to 112p to be displayed superimposed on the camera video is input. These display instruction signals are transmitted to the display processing device 120 via the network line 160.

  According to this configuration, the staff 140 can monitor the camera images displayed on the display 110 while staying at the staff station, and thereby can grasp the condition and the facial color of the patients 153a to 153p to be monitored in a concentrated manner.

  FIG. 2 is a diagram illustrating an example of a screen for performing video display assignment by the operation instruction device 130. In order to assign the camera video to be displayed on the display 110, the staff 140 switches the display setting screen 131 to the video display assignment screen 200. On the video display allocation screen 200, operations such as screen division number selection 201, display position selection 202, display video selection 205, and audio selection 207 are performed. Of these, all the camera images received by the image receiving unit 132 are displayed on the display image selection 205 screen.

  First, in the screen division number selection 201, the number of camera video divisions to be displayed on the display 110 is selected. For example, it is assumed that the options are no division, 4 divisions, 9 divisions, and 16 divisions, and here, 16 divisions are selected.

  Next, in the display position selection 202, the display position of the camera image displayed on the display 110 is selected. In this screen, according to the selected number of divisions (16 divisions), No. 1-No. 16 display positions are set. Among these, for example, No. Assume that the display position 1 is selected. Subsequently, in display video selection 205, a video to be assigned to the selected display position (No. 1) is selected from all camera videos. For example, it is assumed that an image (bed 1) in the upper left corner is selected. As a result, the image of bed 1 is No. 1. 1 is displayed.

  This video display assignment can also be performed by drag and drop using a mouse. Allocation can be easily performed by selecting a desired video 210 from the video of the display video selection 205 and dragging and dropping it to the desired position of the display position selection 202.

  The display cancel button 203 is for canceling the video display allocation of a specific display position, and the all cancel button 204 is for canceling the video display allocation of all the display positions. When any of the video display assignments is performed, the display instruction button 206 is activated, and when the display instruction button 206 is clicked, a display instruction signal (number of video divisions, video display position) is transmitted to the display processing device 120 and the display screen of the display 110 It is reflected in.

  The audio selection button 207 selects whether to output the sound collected by the microphone. For example, normally, it is not selected (off), and when the staff 140 feels an abnormality in the patient's image on the display 110, the selection is switched on (on). Thereby, the change of the patient's condition can be judged not only from the image but also from the sound (scream).

  By such a video assignment function, the video of each patient can be enlarged and displayed by changing the number of screen divisions of the display 110 according to the number of patients (for example, changing from 16 divisions to 4 divisions). In addition, the patient's condition and face color can be monitored more precisely.

  FIG. 3 is a diagram illustrating an example of a screen for inputting display characters by the operation instruction device 130. The staff 140 switches the display setting screen 131 to the display character input screen 300 in order to input characters to be displayed superimposed on the camera image of the display 110. The display character input screen 300 includes fields of camera ID 301, installation location 302, and display character input 303 for each camera 151a to 151p.

  The staff 140 inputs a character string to be displayed superimposed on each camera image in the display character input 303 field. This character string is arbitrary information related to the camera image such as a bed number, a patient name, a doctor name, and a special note. In this example, “bed number” is entered. When a display instruction button 304 is clicked after a character is entered in the display character input 303 field, a display character instruction signal is transmitted to the display processing device 120 and reflected on the display screen of the display 110.

  In this way, it is possible to arbitrarily set characters to be displayed superimposed on each patient video. For example, by displaying a character string for identifying a patient, it is possible to prevent the patient from being mixed up.

  FIG. 4 is a flowchart showing a procedure for analyzing a patient video in the display processing device 120. The video analysis unit 122 performs video analysis on a video of each patient at a predetermined time (n seconds) interval.

  In S401, the video data of the upper part (head) of the patient is acquired from the received video data, and compared with the video data before a predetermined time (n seconds). In this case, in order to capture a change in the condition of the patient, n is preferably set to several seconds to several minutes. In S402, the amount of change in the image (or the amount of head movement) may be calculated, and it is determined whether the amount of change is equal to or greater than the threshold value m1. If it is greater than or equal to the threshold value m1, the process proceeds to S407, and if it is less than the threshold value m1, the process proceeds to S403.

  In S403, the video data of the middle part (abdomen) of the patient is acquired from the received video data and compared with the video data of a predetermined time (n seconds) before. In S404, a change amount (motion amount) of the video is calculated, and it is determined whether or not the change amount is greater than or equal to a threshold value m2. If it is greater than or equal to the threshold m2, the process proceeds to S407, and if it is less than the threshold m2, the process proceeds to S405.

  In S405, the video data of the lower part (foot) of the patient is acquired from the received video data and compared with the video data of a predetermined time (n seconds) before. In S406, the amount of change (motion amount) of the video is calculated, and it is determined whether or not the amount of change is greater than or equal to the threshold value m3. If it is greater than or equal to the threshold value m3, the process proceeds to S407, and if it is less than the threshold value m3, the process ends (the next video is analyzed).

  In step S <b> 407, the display processing unit 121 displays the warning character 113 in an overlapping manner on the camera image of the patient in the display 110. At this time, a warning sound may be emitted together.

In the above analysis, the amount of change in the patient image is compared for each part of the body, and this is because the threshold value of the amount of change for issuing a warning differs depending on the part of the body. For example, since the motion of the abdomen is originally small, the abdomen threshold value m2 is reduced, and since the movement of the head and feet is originally large, the head threshold value m1 and the foot threshold value m3 are increased. Thereby, a change in patient condition can be detected more accurately. It should be noted that the position of the body part to be focused on and the threshold value may be appropriately determined.
In this way, since the amount of change (motion amount) of the patient's body is detected and the warning is automatically issued when the amount of change is equal to or greater than the threshold value, changes in the patient's condition can be detected more reliably.

  The present invention is not limited to the above embodiments, and includes various modifications. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of the above embodiment.

100: patient monitoring system,
110: Display,
111a to 111p: camera images,
112a to 112p: character information to be superimposed on the camera video,
113: Warning character,
120: a display processing device,
121: a display processing unit,
122: Video analysis unit,
123: Instruction receiving unit,
124: Video receiver
130: Operation instruction device,
131: Display setting screen,
132: Video receiver
140: Staff,
150a-150p: beds
151a to 151p: camera,
152a to 152p: voice microphone,
153a-153p: patient,
160: network line,
200: Video display allocation screen,
201: Screen division number selection,
202: display position selection,
205: Display video selection,
207: Voice selection,
300: Display character input screen,
303: Display character input.

Claims (5)

In the patient monitoring system that monitors the patient's condition with video,
A plurality of cameras for taking images of the patient;
A display processing device for receiving video captured by the plurality of cameras via a network line and processing the received video;
A display that concentrates and displays the images of a plurality of cameras processed by the display processing device;
An operation instruction device for instructing the display processing device to display a video display state to be displayed on the display;
The operation instruction device selects a camera image to be displayed on the display and its display position from the images of the plurality of cameras, and transmits the selected image to the display processing device as a display instruction signal. The patient monitoring system according to claim 1, wherein
In each camera video of the display, the character information related to each video is superimposed and displayed,
The patient monitoring system, wherein the character information is input by the operation instruction device and transmitted to the display processing device as a display instruction signal. The patient monitoring system according to claim 1, wherein
The display processing device includes a video analysis unit that detects a temporal change amount of a patient video in a received camera video,
When the amount of change is greater than or equal to a predetermined threshold, a warning character is displayed on the video of the patient in the display via the display processing unit. The patient monitoring system according to claim 3.
The image analysis unit divides a patient's body into a plurality of parts, and compares the amount of change in the image of each part with a threshold value of each part. The patient monitoring system according to claim 1, wherein
A plurality of voice microphones for collecting the voice of the patient;
A patient monitoring system, wherein the collected patient's voice is output from the display via the display processing unit.

Images