JP2007054097A - Medical image processor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical image processor for outputting video signals which contains personally-identifying information of a subject only in the beginning part in the progress of a moving image and then contains no personally-identifying information of the subject till the end of the moving image for recording while displaying personally-identifying information for the subject with images of the body of the subject imaged by an electronic endoscope on a monitor. <P>SOLUTION: The video signals are processed by a video signal processing circuit 26 and are output to both multiplexers 21, 22. A system controller 24 generates character data of the personally-identifying information of the subject, inputs the data in the first multiplexer 21, and halts the input after inputting the data in the second multiplexer 22. The first multiplexer 21 outputs the video signals to the monitor 60 while imposing the character signals when the character signals are input. The second multiplexer 22 outputs the video signals to a video cartridge recorder 50 while imposing the character signals when the character signals are input. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a medical that generates a video signal for monitoring by processing a video signal output by imaging a subject's body by a medical video imaging device such as an endoscope, an X-ray device, or a CT scanner. The present invention relates to an image processor device.

2. Description of the Related Art Conventionally, in a medical system including this type of medical moving image photographing apparatus, medical image processor apparatus, and monitor, an image of the body of the subject imaged by the medical moving image photographing apparatus is displayed on the monitor through the medical image processor apparatus. In addition, personal identification information such as the subject's name was displayed on the monitor together with the above video in order to make the surgeon always recognize which patient is being examined or performed. .
Japanese Patent Laid-Open No. 5-300519 Japanese Patent Laid-Open No. 5-7550

  Since the video signal output for monitoring by such a medical system is the examination content or the treatment content itself of the subject's body, if this is recorded in the video deck, the examination linked to the medical record or Not only will it be a record of the procedure, but it can also be used for education and conference presentation in the hospital by extracting the core part and editing it again.

  However, in the case of secondary use of such records of examinations or procedures, in order to protect the subject's privacy rights, it must be performed in a form that does not allow personal identification, but the above-mentioned conventional medical use Since the monitor video signal output from the image processor is the content that always displays the personal identification information of the subject together with the image in the body cavity, no matter how it is extracted from this monitor video signal The personal information of the subject is still reflected in the screen displayed by the extracted video signal.

  In practice, a doctor who intends to use such a video signal for presentation at an academic conference, etc., may further identify the subject's personal identification information by mosaicking the extracted and edited video signal. However, such image processing is very complicated and cannot completely prevent leakage.

  On the other hand, it is conceivable to record the video signal before imposing personal identification information, but since the recorded video signal does not contain any identification information of the subject, the medical record is not recorded. If it is stored as a record of examinations or procedures linked to, and later reconstructed for medical examination of the subject, it is difficult to use.

  Therefore, an object of the present invention is to display personal identification information for a subject together with an image of the subject's body photographed by a medical motion picture photographing device on a monitor, and only at the beginning of the progress of the motion picture. Provided is a medical image processor device capable of outputting a video signal that includes personal identification information of a subject and thereafter does not include personal identification information of the subject until the end of a moving image. That is.

  The medical image processor device according to the present invention devised to solve the above-mentioned problems is a medical image processor device that processes a video signal output by a medical moving image photographing device photographing a subject's body. And a processing circuit to which the video signal is input, and a first input terminal and an output terminal, respectively, and the video signal processed by the processing circuit is input to the first input terminal. When the signal is not input to the second input terminal, the video signal is output as it is from the output terminal, and when the signal is input to the second input terminal, the video signal is added to the video signal. The first and second multiplexers imposing the signal input to the input terminal 2 and outputting from the output terminal, the character display start signal, the character display end signal, the recording start signal, and the recording stop signal are input. The And the second input terminal of the first multiplexer is the individual of the subject only after the character display start signal is input until the character display end signal is input. A character signal corresponding to the identification information is output and thereafter the output of the signal is stopped, and the second input terminal of the second multiplexer is only input for a predetermined time after the recording start signal is input. A control circuit that outputs the character signal and then stops outputting the same signal, outputs a video signal output from the output terminal of the first multiplexer for monitoring, and outputs the second multiplexer The video signal output from the end is output for recording.

  With this configuration, when the character display start signal is input, the control circuit continues to input the character signal to the other input terminal of the first multiplexer until the character display end signal is input. As a result, personal identification information of the subject can be arbitrarily displayed on the monitor together with an image of the body of the subject under examination or treatment. Therefore, the surgeon does not mistake the patient who is the subject. In this manner, even when the personal identification information of the subject is displayed on the monitor, the surgeon inputs a recording start signal to the control device if recording is necessary. Then, the character signal is output to the other end of the second multiplexer only for a predetermined time from the time of input, and thereafter the output of the signal is stopped. Therefore, the monitor video signal is displayed only at the beginning of the subject. The personal identification information of the subject is reflected, and after that, only the image of the subject's body is reflected. Therefore, even when this video signal is stored after being linked to an electronic medical record after examination or treatment, it is not mistaken for which patient it is. In addition, when editing this video signal for secondary use, if only the beginning part is deleted, the personal information of the subject can be obtained without applying mosaic processing to the personal identification information of the subject. Will not leak.

  As described above, the medical image processor device of the present invention is a monitor video signal that always displays personal identification information for the subject together with the image of the body of the subject imaged by the medical moving image photographing device. A video signal that contains the subject's personal identification information only at the beginning of the video and then does not contain the subject's personal identification information until the end of the video is output for recording. can do.

  Next, modes for carrying out the present invention will be described based on the attached drawings.

  FIG. 1 is an external view of an endoscope system including an endoscope processor device which is a first embodiment of a medical image processor device according to the present invention. As shown in FIG. 1, the endoscope system includes an electronic endoscope 10, a light source processor device 20, a video deck 50, and a monitor 60.

  The electronic endoscope 10 includes a body cavity insertion portion 10a that is elongated to be inserted into a body cavity, an angle knob for bending the distal end portion of the body cavity insertion portion 10a, and a number of switches (FIG. 2). In FIG. 5, only the video button 10e is shown), the light guide flexible tube 10c for connecting the operation unit 10b and the light source processor device 20, and the base end of the light guide flexible tube 10c. The connector 10d is provided. As shown in the schematic diagram of FIG. 2, an illumination window and a photographing window into which the light distribution lens 11 and the objective lens 12 are fitted are formed on the distal end surface of the body cavity insertion portion 10a. In the body cavity insertion portion 10a, an image pickup device 13 that captures an image of the test portion formed by the objective lens (objective optical system) 12 and outputs a video signal is incorporated.

  A video signal cable 18 for transmitting a video signal output from the image sensor 13 is passed through the body cavity insertion portion 10a, the operation portion 10b, and the light guide flexible tube 10c, and is provided on the end face of the connector 10d. It is electrically connected to an electrode (not shown). Similarly, the signal cable 19 for transmitting on / off of various switches (video button 10e and the like) provided in the operation unit 10b is also routed through the operation unit 10b and the light guide flexible tube 10c, and the connector 10d It is electrically connected to an electrode (not shown) provided on the end face.

  In parallel with the signal cables 18 and 19, a light guide 16 made of quartz fiber is passed through the body cavity insertion portion 10a, the operation portion 10b, and the light guide flexible tube 10c. The distal end of the light guide 16 faces the light distribution lens 11 in the distal end portion of the body cavity insertion portion 10a, and the proximal end thereof protrudes from the end surface of the connector 10d.

  The light source processor 20 has a function of introducing illumination light to the end face of the light guide 16 of the electronic endoscope 10 and an image corresponding to a video signal received from the image sensor 13 through an electrode (not shown) of the electronic endoscope 10. A function of generating a video signal by processing and outputting it to the monitor 60 is provided as a basic function.

  The front panel of the casing of the light source processor device 20 is provided with a socket 20a that is a through hole in which the light guide 16 of the electronic endoscope 10 is inserted and held from the outer surface side. The through hole of the socket 20 a communicates with the internal space of the light source processor device 20. In the inner space of the light source processor device 20, the condensing lens 28 and the aperture blade 36 are sequentially arranged along the extension line of the central axis of the socket 20a (that is, the central axis of the light guide 16 inserted into the socket 20a). , And a lamp 33 are arranged.

  The condensing lens 28 is a lens that constitutes an optical system that condenses parallel light incident from the diaphragm blade 36 side along the optical axis onto the base end surface of the light guide 16 inserted into the socket 20a.

  The lamp 33 is supplied with a power supply current from a lamp power source 39 to emit illumination light (not shown), and a lens or reflector (not shown) for collimating illumination light emitted from the bulb as divergent light. ). As a result, the lamp 33 emits illumination light toward the condenser lens 28 as parallel light along the optical axis of the condenser lens 28.

  The diaphragm blade 36 is a plate that is inserted by an arbitrary amount into the optical path of the illumination light by being rotated by a motor 37 controlled by the system controller 24 described later, and is incident on the light guide 16. Adjust the amount of light.

  On the front side panel of the housing of the light source processor device 20, an electric circuit comprising a number of electrodes each conducting with each terminal provided on the connector 10d of the electronic endoscope 10 when the light guide 16 is inserted into the socket 20a. A keyboard 23 including a socket (not shown) and a number of switches is provided. Through this electrical socket, the signal cable 18 is connected to the video signal processing circuit 26, and the signal cable 19 is connected to the input end of the system controller 24. Each switch constituting the keyboard 23 is also connected to the input end of the system controller 24, and an operation signal generated by operating these switches by the operator is input to the system controller 24. One of the plurality of switches constituting the keyboard 23 is a character ON / OFF switch.

  The video signal processing circuit 26 converts the video signal input through the video signal cable 18 into a video signal such as NTSC by performing predetermined signal processing (corresponding to a processing circuit). The video signal processing circuit 26 inputs the converted video signal to the first input terminal of the first multiplexer 21 and the first input terminal of the second multiplexer 22, respectively. The video signal processing circuit 26 extracts a luminance signal necessary for the system controller 24 to perform automatic light control by the diaphragm plate 36 from the video signal and inputs the luminance signal to the system controller 24.

  The system controller 24 is connected to the second input terminals of the first and second multiplexers 21 and 22 via switches 27 and 28, respectively, and is connected to the lamp power supply circuit 39 and the motor 37 described above. Each is connected.

  When a start button (not shown) on the keyboard 23 is pressed, the system controller 24 causes the lamp power source 39 to emit illumination light from the lamp 33 and causes the motor 37 to appropriately illuminate the diaphragm blade 36. In the optical path. Then, the illumination light emitted from the lamp 33 passes by the side of the diaphragm blade 36, enters the condenser lens 28, and is irradiated to the test part through the light guide 16 and the light distribution lens 11. The illumination light applied to the test part in this way is reflected on the surface of the test part, and a part of the illumination light enters the objective lens 12, thereby forming an image of the test part on the imaging surface of the image sensor 13. Form. During this time, the video signal output from the image sensor 13 and incident on the video signal processing circuit 26 is a moving video signal indicating a visible image of the test portion formed by the reflected light of the illumination light.

  The system controller 24 also displays a character for displaying personal identification information of the subject as visible character information (character information) based on information such as an electronic medical record input through a storage medium (not shown) or a network. Signals are generated and output to the second input terminals of the multiplexers 21 and 22, respectively. However, switches 27 and 28 are provided on signal lines for transmitting character signals between the system controller 24 and the input terminals of the multiplexers 21 and 22, respectively. The switches 27 and 28 are opened and closed based on a control signal output from the system controller 24. Therefore, the system controller 24 itself can control whether or not to apply a character signal for each of the multiplexers 21 and 22. As will be described in detail later with reference to FIG. 3, the system controller 24 displays the character after the character display start signal is input to the second input terminal of the first multiplexer 21. Only until the end signal is input, a character signal corresponding to the personal identification information of the subject is input, and thereafter the input of the signal is stopped, and the second input terminal of the second multiplexer is recorded. This corresponds to a control circuit that inputs a character signal only for a predetermined time after the start signal is input and then stops the input of the signal.

  Further, the system controller 24 directly inputs a trigger signal for controlling the recording operation (recording start, recording stop) of the video deck 50 to the video deck 50. )It is connected to the. Note that the recording operation of the video deck 50 is toggle control. Recording is started when an odd-numbered falling edge of the trigger signal is detected, and recording is stopped when an even-numbered falling edge is detected.

  Each of the multiplexers 21 and 22 receives the first signal from the video signal processing circuit 26 while the character signal output from the system controller 24 by the opening of the switches 27 and 28 is not input to the second input terminal. The video signal input to the input terminal is output from the output terminal as it is. Each of the multiplexers 21 and 22 receives the signal from the video signal processing circuit 26 while the character signal output from the system controller 24 is input to the second input terminal when the switches 27 and 28 are closed. A character signal is imposed on the video signal input to the first input terminal and output from the output terminal. The video signal input terminal of the monitor 60 is connected to the output terminal of the first multiplexer 21, and the video signal input terminal of the video deck 50 is connected to the output terminal of the second multiplexer 22.

  Hereinafter, processing executed by the system controller 24 to control both the multiplexers 21 and 22 and the video deck 50 will be described with reference to the timing chart of FIG. The system controller 24 is provided with control signals Ctr1 and Ctr2 for performing character display ON / OFF so that the monitor 60 and the video deck 50 can display characters independently.

  3A shows the signal state (logical value) of the input terminal connected to the video button 10e in the system controller 24. FIG. That is, the signal state of this input terminal shows a logical value H while the video button 10e is not pressed, and shows a logical value L only while the video button 10e is pressed. Since the video button 10e functions as a so-called toggle switch, the system controller 24 records an odd number of the falling of the signal state of the input terminal from the logical value H to the logical value L as a recording start signal (REC). And the even number is recognized as a recording stop signal (STOP).

  FIG. 3B shows a logical value of the trigger signal. That is, this trigger signal maintains the logical value H in the normal state, but becomes the logical value L simultaneously with the input of the recording start signal or the recording stop signal, and returns to the logical value H after a predetermined time has elapsed.

  FIG. 3C shows the logical value of the control signal Ctr2 for the switch 28 connected to the second input terminal of the second multiplexer 22. That is, the control signal ctr2 for the switch 28 maintains the logical value H in the normal state, but becomes the logical value L simultaneously with the input of the recording start signal, and after a time corresponding to 30 × N (N: integer) frame has elapsed. Return to logic H. The time corresponding to one frame is the time required for the image sensor 13 to output a video signal for one frame (one frame), which is exactly one second for 30 frames. For example, if N is “5”, the logical value of the control signal is L for 5 seconds. The switch 28 is closed only while the control signal Ctr2 takes the logical value L.

  FIG. 3D shows the timing of the character signal input to the second input terminal of the second multiplexer 22. That is, only after the recording start signal is input to the second input terminal of the second multiplexer 22, the time corresponding to 30 × N (N: integer) frames and the recording stop signal are input. A signal is input. Therefore, the character signal is input to the second input terminal of the second multiplexer 22 after the recording start signal is input and after a time corresponding to 30 × N (N: integer) frames elapses until the recording stop signal is input. Is not entered.

  FIG. 3E shows the signal state (logical value) of the input terminal connected to the character ON / OFF switch in the keyboard 23. That is, the signal state of this input terminal shows a logical value H while the character ON / OFF switch is not pressed, and shows a logical value L only while the character ON / OFF switch is pressed. Since this character ON / OFF switch functions as a so-called toggle switch, the system controller 24 outputs the character display start signal for the odd number of falling edges from the logical value H to the logical value L of the signal state of the input terminal. And the even number is recognized as a character display end signal.

  FIG. 3G shows the logical value of the control signal ctr1 for the switch 27 connected to the first multiplexer 21. That is, the control signal ctr1 for the switch 27 maintains the logical value L in the normal state, but becomes the logical value H simultaneously with the input of the character display start signal, and returns to the logical value L simultaneously with the input of the character display end signal. The switch 27 is closed only while the control signal Ctr1 takes the logical value H.

  FIG. 3F shows the timing of the character signal input to the first multiplexer 21. That is, the character signal is input to the first multiplexer 21 from when the character display start signal is input to when the character display end signal is input.

  According to the endoscope light source device of the present embodiment configured as described above, the operator inserts the main power into the endoscope light source device 20 and inserts the body endoscope into the body cavity of the electronic endoscope 10. While 10a is inserted into the body cavity of the subject, an image of the body cavity of the subject is displayed on the monitor 60. When the operator depresses the character ON / OFF switch on the keyboard 23 at an arbitrary timing, the personal identification information of the subject is displayed on the monitor 60 side by side on the image in the body cavity. The personal identification information of the subject is alternately displayed and hidden every time the character ON / OFF switch is pressed. Therefore, the surgeon can arbitrarily display the personal identification information of the subject on the monitor 60 during observation or treatment.

  In addition, the operator can record an image in the body cavity of the subject on a recording medium in the video deck 50 by pressing the video button 10b at an arbitrary timing during observation or treatment. While the video signal that reflects the body cavity of the subject is recorded on the recording medium in the video deck 50 in this way, even if the personal identification information of the subject is displayed on the monitor 60. The personal identification information is not included in the video signal recorded on the recording medium in the video deck 50. That is, for a period of N seconds after the surgeon presses the video button 10b, a video signal for displaying a screen in which personal identification information is added to the image in the body cavity of the subject is recorded on a recording medium in the video deck. However, after that, a video signal for displaying only an image in the body cavity of the subject is recorded on a medium in the video deck. Therefore, when editing the video signal in this recording medium for secondary use, it is possible to edit the video signal only by removing the beginning part and the end part where the personal identification information of the subject is reflected. However, since the personal identification information of the subject is not reflected in the edited video signal, the surgeon can avoid the risk of unnecessarily violating the privacy of the subject. On the other hand, when this video signal is linked to an electronic medical record and used for the medical examination of the subject, it is possible to easily know which patient is due to the examination as long as the beginning of the video signal is reproduced. Because it can, it will not be mistaken for the video signal for other patients.

1 is an external view showing an external appearance of an endoscope system according to an embodiment of the present invention. Schematic showing the internal configuration of the light source processor device Timing chart showing operation of light source processor device

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Fluorescence observation endoscope 10e Video button 12 Objective optical system 13 Image pick-up element 20 Light source processor apparatus 21 1st multiplexer 22 2nd multiplexer 24 System controller 26 Video signal processing circuit 27 Switch 28 Switch 50 Video deck 60 Monitor

Claims (3)

A medical image processor device for processing a video signal output by imaging a body of a subject by a medical video imaging device,
A processing circuit to which the video signal is input;
Each of the first and second input ends and the output end, and the video signal processed by the processing circuit is input to the first input end and no signal is input to the second input end. The video signal is output from the output terminal as it is, and when the signal is input to the second input terminal, the signal input to the second input terminal is imposed on the video signal. First and second multiplexers that output from the output end;
A character display start signal, a character display end signal, a recording start signal, and a recording stop signal are input. The character display start signal is input to the second input terminal of the first multiplexer. The character signal corresponding to the personal identification information of the subject is output only after the character display end signal is input, and thereafter the output of the signal is stopped, and the second multiplexer A control circuit that outputs the character signal only for a predetermined time after the recording start signal is input and then stops outputting the signal to the input terminal of 2;
A medical image processor that outputs a video signal output from an output terminal of the first multiplexer for monitoring and outputs a video signal output from an output terminal of the second multiplexer for recording. apparatus. The medical image processor apparatus according to claim 1, wherein the control circuit outputs the character signal to the second input terminal of the second multiplexer even after the recording stop signal is input. The control circuit is connected to a recording device, and when the recording start signal is input, causes the recording device to start recording the video signal output from the output terminal of the second multiplexer, and then the recording 2. The medical image processor apparatus according to claim 1, wherein when the stop signal is input, the recording apparatus stops the recording of the video signal.