JP4538280B2 - Electronic endoscope system with water supply device - Google Patents

Description

  The present invention relates to a video endoscope having an image sensor, a processor, and an electronic endoscope system including a water supply device, and more particularly, to a water supply process for ejecting a liquid such as water toward an observation site.

In the electronic endoscope system, a video scope provided with a water supply channel for ejecting a cleaning liquid for cleaning the affected area can be connected together with an air supply and water supply channel for the purpose of cleaning the lens at the distal end of the insertion portion A dedicated water supply device is connected (see, for example, Patent Document 1). A tube extending from the water feeding device is connected to an injection port in the scope operation unit, and wash water compressed by the pump is sent from the water feeding device to the video scope through the water feeding channel. A nozzle (water jet nozzle) is formed at the distal end of the videoscope so that washing water can be ejected toward the affected area, and mucus, blood, etc. adhering to the affected area are removed by the ejection of washing water. The operator cleans the affected area by operating a foot switch or the like of the water feeding device while performing an endoscope operation.
JP 2003-70730 A

  At the distal end of the video scope, the position of the nozzle relative to the position of the image sensor varies depending on the scope type and model. Therefore, when the cleaning water is ejected toward the affected area while observing the observation image, the position (jetting target position) where the cleaning liquid hits the affected area on the screen varies depending on the scope. Moreover, the jet pressure of washing water differs depending on the type of water supply device, and the water pressure at the time of jetting also differs depending on the setting of the water supply pressure determined by the water supply device. Therefore, the washing water ejection target position on the screen varies depending on the type and setting state of the water feeding device. Due to the difference in the types of the scope and the water supply device connected in this way, the operator cannot confirm in advance where the washing water is actually ejected. For this reason, water cannot be ejected to an appropriate place at a time, the work efficiency of the endoscopic work is reduced, and the diagnosis of the affected area is adversely affected.

  An electronic endoscope system according to the present invention includes a videoscope having an image sensor provided at a distal end portion, a transport pipeline for ejecting liquid toward an observation target, and water supply for supplying liquid to the transport pipeline An apparatus; a processor that outputs a video signal based on an image signal read from the image sensor; and a display device that displays an observation image based on the video signal. Here, unlike the air supply / water supply channel provided for the purpose of cleaning the lens, the transport conduit indicates a conduit provided for directly ejecting liquid toward the affected part.

  The processor includes detection means for detecting at least one of the type of the water feeding device and the type of the video scope. Since the arrival position of the liquid varies depending on the ejection pressure, the type of the water feeding device is determined according to the water feeding pressure when the liquid is sent from the water feeding device to the video scope. In addition, since the arrival location of the liquid differs depending on the difference between the tip ejection position and the diameter of the transport pipe with respect to the position of the image sensor at the tip, the type of scope is determined according to the tip ejection position and the tip diameter. It is done. However, in the case where the types of the water feeding devices to be connected are the same, the detection means need only determine the type of the video scope. On the contrary, in the condition that the types of video scopes connected are the same, the detection means need only detect the type of the water supply device. Further, in the case where the size of the distal end diameter of the video scope or the tip ejection position is the same, the type of the video scope may be determined based on either one.

  Furthermore, the processor, with respect to the observation image, a liquid arrival display position specifying means for specifying a liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the type detected by the detection means, Signal processing means for processing the video signal so as to display the target image indicating the liquid arrival display position together with the observation image; For example, the signal processing means processes the video signal so as to display a symbol mark as the target image. Since the position of the liquid arrival position can be confirmed on the screen before the liquid is ejected, the operator ejects the liquid toward the target image to clean the affected part.

  When the water supply device includes setting means for setting the value of the water supply pressure of the liquid to be ejected, the place where the liquid reaches differs depending on the water supply pressure. Therefore, it is preferable that the detection means detects the set water supply pressure value, and the liquid arrival display position specifying means specifies the liquid arrival display position based on the value of the water supply pressure together with the type of the video scope and the water supply device. .

  Although the target image may be displayed constantly, it is preferable to display it only immediately before the liquid is ejected. In this case, a display execution switch for executing display of the target image is provided, and the signal processing means processes the video signal so as to display the target image in accordance with an operation on the execution switch. In order to prevent the endoscopic operation from being hindered while the liquid is being ejected, the signal processing means may erase the target image when the liquid is ejected by the water supply device.

  It is desirable to perform the liquid ejection and display the target image by operating one switch such as a foot switch. Therefore, in the water supply display execution switch for operating the water supply device to execute the ejection of the liquid and executing the display of the target image, and the water supply display execution switch, the first operation state corresponding to the display of the target image and the liquid It is preferable to provide an operation detecting means for detecting the second operation state for executing the ejection. The signal processing means processes the video signal so as to display the target image when the first operation state is detected, and the water feeding device executes liquid ejection when the second operation state is detected. .

  The processor of the electronic endoscope apparatus according to the present invention supplies a videoscope having an image pickup device provided at a distal end portion, a transport conduit for ejecting liquid toward an observation target, and supplies the liquid to the transport conduit A processor for outputting an image signal to a display device on the basis of an image signal read from an image pickup device, and a type of the water supply device and a video scope The detection means for detecting at least one of the above types, and the liquid arrival display position corresponding to the arrival position of the liquid ejected from the transport pipeline with respect to the observation image are the types detected by the detection means. A liquid arrival display position specifying means for specifying the signal and a signal processing means for processing a video signal so as to display a target image indicating the liquid arrival display position together with the observation image. It is characterized in.

  The endoscope display control device according to the present invention includes at least one of a type of a water supply device and a type of a videoscope for supplying a liquid to a videoscope having a transport pipe for ejecting the liquid toward an observation target. Detection means for detecting one of them, and a liquid arrival display position specifying means for specifying the liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the detected type with respect to the observation image; Signal processing means for processing a video signal so as to display a target image indicating a liquid arrival display position together with an observation image is provided.

  The endoscope display control method according to the present invention includes at least one of a type of a water supply device and a type of a videoscope for supplying a liquid to a videoscope having a transport pipeline for ejecting the liquid toward an observation target. One is detected, the liquid arrival display position corresponding to the arrival position of the liquid ejected from the transport pipeline is specified for the observed image according to the detected type, and the target image indicating the liquid arrival display position is observed The video signal is processed so as to be displayed together with the image.

  The endoscope display control program according to the present invention includes at least one of a type of a water supply device and a type of a videoscope for supplying liquid to a videoscope having a transport pipe for ejecting liquid toward an observation target. Detection means for detecting one of them, and a liquid arrival display position specifying means for specifying the liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the detected type with respect to the observation image; The signal processing means for processing the video signal is made to function so that the detection means displays the target image indicating the liquid arrival display position together with the observation image.

  According to the present invention, the place where the liquid reaches can be confirmed in advance while viewing the observation image, and the liquid can be efficiently ejected to the target place.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing an electronic endoscope system including an endoscope water supply device.

  The electronic endoscope system includes a video scope 10, a processor 100, a water supply device 20, and a monitor 150, and the video scope 10, the water supply device 20, and the monitor 150 are connected to the processor 100.

  The video scope 10 includes a rigid bending portion 18 including a distal end portion 14, a flexible insertion portion 17, and an operation portion 16 provided with an operation lever 16 </ b> D for operating the bending portion 18. The connection pipe 12 and the connector part 15 are provided for connection to the. The video scope 10 is detachably connected to the processor 100 via the connection tube 12 and the connector unit 15, and the connector unit 15 is inserted into the connection unit 102 of the processor 100.

  The water supply device 20 is connected to the video scope 10 via the scope connection tube 52, and one end of the scope connection tube 52 is connected to the water supply port 11 provided in the operation unit 16 of the video scope 10. Further, the water supply device 20 is electrically connected to the processor 100 via the signal cable 104. When treatment, examination, and the like are started, the operation unit 16 of the video scope 10 is grasped by the operator, and the insertion unit 17 is inserted into the body.

  In the video scope 10, a water jet water supply channel 13 through which a liquid such as washing water for washing the affected part passes is formed from the water supply port 11 of the operation unit 16 to the tip part 14, and enters from the water supply port 11. The liquid passes through the water jet water supply channel 13 and is ejected from a water jet nozzle 13 </ b> A which is the tip (exit) of the water supply channel 13. The water jet water supply channel 13 is an air supply or water supply channel (not shown) provided in the scope for the purpose of removing an object attached to an objective lens (not shown) provided at the tip 14. A forceps channel (not shown) through which a treatment instrument such as forceps is inserted is provided independently by a pipe line.

  The scope connection tube 52 is a flexible tube, and includes a water supply base 52A and a device base 52B at both ends of the tube. The water supply base 52 </ b> A is attached to the water supply opening 11 of the video scope 10, and the water supply base 52 </ b> B is attached to the outlet 23 </ b> B of the water supply apparatus 20. The water supply device 20 is provided with a tank 40 and stores water, a cleaning liquid, and the like for cleaning a predetermined part in the body. A tank tube 50 is inserted into the tank 40, and the liquid in the tank 40 is sent to the water feeding device 20 through the tank tube 50. The tank tube 50 is finally connected to the inlet 23A of the water feeding device 20 as described later.

  A rotary pump 21 for sending the liquid in the tank 40 to the video scope 10 is provided in the water supply device 20, and the rotary pump 21 is operated by driving a motor (not shown here). In addition, a connection tube 25 that connects the inflow port 23A and the outflow port 23B is provided along the rotary pump 21 inside the water supply device 20, and the tank 40 includes a tank tube 50, a connection tube 25, and a scope connection tube 52. The water jet water supply channel 13 communicates with the water jet. The configuration of the rotary pump 21 is substantially the same as that of a rotary tube pump that supplies a chemical solution or the like that has been conventionally used. When the rotary pump 21 rotates in the clockwise direction in FIG. It flows through the tank tube 50, the connection tube 25, and the scope connection tube 52, and is sent to the water jet water supply channel 13.

  The front panel of the water supply device 20 is provided with an injection flow rate setting switch 27, a liquid crystal display unit 26, and a main power switch 31 for turning on / off the main power supply of the water supply device, and a foot switch 22. Is provided with a switch connection port 28. The injection flow rate setting switch 27 is a switch for setting the injection rate of the liquid to be injected into the body, that is, the amount of liquid injected into the body per unit time in a stepwise manner. The injection rate can be set in stages. While the injection flow rate is set / changed by operating the injection flow rate setting switch 27, the injection flow rate is displayed on the display unit 26.

  FIG. 2 is a block diagram of the electronic endoscope system.

  Light emitted from a lamp 112 in the processor 100 is incident on an incident end of a light guide 58 provided in the video scope 10 through a diaphragm (not shown). The light guide 58 is an optical fiber bundle that transmits light emitted from the lamp 112 to the distal end side of the video scope 10, and the light that has passed through the light guide 58 is emitted from the exit end of the optical fiber bundle. Thereby, light is irradiated to the observation site.

  The light reflected at the observation site reaches the light receiving surface of the CCD 19 through an objective lens (not shown) at the tip of the video scope 10. As a result, an image of the observation site is formed on the light receiving surface of the CCD 19. In this embodiment, a single-plate simultaneous type is applied as a color imaging method, and complementary color in which color elements of yellow (Ye), cyan (Cy), magenta (Mg), and green (G) are arranged in a checkered pattern. A filter (not shown) is disposed so as to correspond to each pixel on the light receiving surface.

  In the CCD 19, an image signal of a subject image corresponding to a color passing through a complementary color filter is generated by photoelectric conversion, and an image signal of one frame (for one field) is sequentially read out at a predetermined time interval according to a color difference line sequential method. In this embodiment, the NTSC system is applied as the color television system, and an image signal for one field is sequentially read out every 1/60 second interval and sent to the initial circuit 55. When the image signal is amplified in the initial circuit 55, it is sent to the processor signal processing circuit 128 of the processor 100.

  The processor signal processing circuit 128 includes an A / D converter 128A, a color separation / correction circuit 128B, a white balance adjustment circuit 128C, an image composition processing circuit 128D, and a D / A conversion circuit 128E. Various treatments are applied. As a result, a video signal is generated and output to the monitor 150, whereby an observation image is displayed on the monitor 150.

  The system control circuit 122 is a circuit that controls the operation of the processor 100, and outputs a control signal to each circuit such as the light source power supply 111 and the processor signal processing circuit 128. In a timing control circuit (not shown), a clock pulse for adjusting the processing timing of the signal is output to each circuit in the processor 100, and a synchronization signal accompanying the video signal is sent to the processor signal processing circuit 128. A ROM (not shown) in the system control circuit 122 stores a program for controlling the operation of the entire processor.

  In the video scope 10, there is provided a scope memory 56 in which data related to the type and characteristics of the scope is stored. When the video scope 10 is connected to the processor 100, data is transmitted / received between the scope control unit 57 and the system control circuit 122, and data related to the type and scope characteristics of the scope read from the scope memory 56 is stored in the scope control unit. 57 to the system control circuit 122 of the processor 100. Further, the water supply device 20 is connected to the system control circuit 122 via the signal cable 104, and data such as the type of the water supply device 20 and the set water supply pressure is transmitted to the system control circuit 122 of the processor 100.

  The memory 127 stores data of a plurality of connectable video scopes, types of connectable water supply apparatuses (types), and set water supply pressures. A memory control circuit 125 in the system control circuit 122 controls reading of data from the memory 127 and writing of data to the memory 127.

  In the system control circuit 122, there is provided an arithmetic circuit 126 for calculating a position M on the screen (hereinafter referred to as an ejection display position) corresponding to the location of the trunk where the liquid hits by the ejection of the liquid. Is sent to the monitor output control circuit 124. In the monitor output control circuit 124, a character code of a mark indicating the ejection display position (hereinafter referred to as a target mark) is generated and output to the monitor display control circuit 123 in accordance with an operation on the foot switch 22. In the monitor display control circuit 123, a character signal is output to the image composition processing circuit 128D at a predetermined timing according to the character code so that the target mark is displayed at the ejection display position M. In the image composition processing circuit 128D, the character signal is superimposed on the video signal, and as a result, the target mark MP is displayed.

  FIG. 3 is a block diagram of the water supply device 20. Power is supplied from the power supply circuit 38 to each circuit in the water feeding device 20.

  The water supply control circuit 35 controls the operation of the water supply device 20, and signals corresponding to operations are sent from the foot switch 22 and the injection flow rate setting switch 27 to the water supply control circuit 35, respectively. When the injection flow rate setting switch 27 is operated, the set injection flow rate is temporarily stored in the RAM 39 as data. The display unit 26 is a liquid crystal display device having an LCD. When a control signal is output from the water supply control circuit 35 based on the data in the RAM 39, the injection flow rate is displayed on the display unit 26.

  The foot switch 22 can be operated in two stages of half-press and full-press. When the foot switch 22 is half-pressed, the water supply control circuit 35 transmits a half-press detection signal to the processor 100 via the cable 104. When the foot switch 22 is fully pressed, the water supply control circuit 35 transmits a full press detection signal to the processor 100 via the cable 104. When the foot switch 22 is fully pressed, the water supply control circuit 35 outputs a control signal to the motor drive circuit 37 to rotate the motor 41. While the foot switch 22 is pressed, the water in the tank 40 continues to flow toward the water jet water supply channel 13 of the video scope 10. When the foot switch 22 is not depressed (when the foot is released from the foot switch 22), the water supply operation is stopped.

  The motor 41 is a direct current motor driven according to PWM (Pulse Width Modulation) control, and the rotary pump 21 rotates according to the rotation of the motor 41. In the motor drive circuit 37, a drive signal is output to the motor 41 based on the control signal sent from the water supply control circuit 35. The rotation speed of the motor 41 follows the injection flow rate set by the injection flow rate setting switch 27.

  As shown in Table 1, the correspondence between the injection flow rate (the amount of liquid injected into the body per unit time) Li set by the injection flow rate setting switch 27 and the rotation speed of the motor 41 is previously stored in the ROM 36 as a table. Are stored together with the data of the type of the water supply device 20. Here, the relationship between the five injection flow rates Li that can be set by the injection flow rate setting switch 27 and the rotational speed of the motor 41 and the output ratio of the motor 41 according to the injection flow rate Li is shown.

  The rotation speed of the motor 41 is set based on Table 1. For example, when the injection flow rate is set to Li = 10.0 ml, the motor 41 is driven so that the output becomes 100%. That is, the motor 41 is driven at the maximum rotation speed V1. In the injection flow rate setting switch 27, the set injection flow rate is increased or decreased stepwise by turning the dial type switch step by step. When the injection flow rate is set, the injection flow rate data is transmitted to the processor 100 as the water supply pressure data.

  When the motor 41 rotates, the rotation speed of the motor 41 is detected by the encoder 42. Then, a voltage value corresponding to the rotation speed of the motor 41 is sent from the encoder 42 to the water supply control circuit 35. In the water supply control circuit 35, in order to feedback control the rotation of the motor 41, a difference between the detected rotation speed and the set rotation speed is calculated, and a control signal based on the difference is sent to the motor drive circuit 37.

  FIG. 4 is a flowchart showing a water supply operation process executed in the system control circuit 122. FIG. 5 is a diagram showing data related to the video scope and the type of the water supply device, and the set water supply pressure stored in the memory 127. 6 and 7 are diagrams showing screen displays of the monitor 150. FIG.

  In step S <b> 101, it is determined whether any water supply device 20 of a predetermined type is electrically connected to the processor 100. If it is determined that the water feeder 20 is not connected to the processor 100, step S101 is repeatedly executed. On the other hand, if it is determined that the water supply device 20 is connected to the processor 100, the process proceeds to step S102, and the type of the water supply device 20 stored in the ROM 36 of the water supply device 20 and the set injection flow rate, that is, the water supply pressure. Is detected via the water supply control circuit 35.

  In step S <b> 103, it is determined whether any video scope 10 of a predetermined type is connected to the processor 100. If it is determined that the video scope 10 is not connected, step S103 is repeatedly executed. On the other hand, if it is determined that the video scope 10 is connected, the process proceeds to step S 104, and the type of the video scope 10 stored in the scope memory 56 is detected via the scope control unit 57.

  In step S105, corresponding data is read from the memory 127 based on the detected video scope type, water supply device type, and water supply pressure data set in the water supply device. As shown in FIG. 5, in the memory 127, according to each type ((A), (B),...) Of each connectable video scope 10, each type of water feeding device 20 ((a),. .., (Y)) and the set water supply pressure ((1),..., (X)) are stored in association with each other as data. The type of the video scope 10 is assigned to the upper bits, and the type of the water feeder 20 and the set water pressure value are assigned to the lower bits.

  In the present embodiment, since the ejection display position M changes depending on the ejection pressure of the cleaning water and the position of the nozzle 13A, the type of the video scope 10 and the type of the water supply device 20 are defined according to the characteristics that affect the ejection pressure. . The video scope 10 is classified according to the position of the water jet nozzle 13A with respect to the arrangement position of the CCD 19 at the distal end and the size of the diameter of the scope distal end 14. On the other hand, the water supply device 20 is classified according to the pump characteristics that affect the water supply pressure when the cleaning water is sent to the video scope 20. When the type of the video scope 10, the type of the water supply device 20, and the set water supply pressure are detected, data of a combination corresponding to the detected data is detected from the hierarchical structure data shown in FIG. 5.

  With respect to the ejection display position M, connectable scopes and water supply devices are connected in combination for all types, and the display position of the place where the cleaning water is actually ejected is recorded as data and stored in the arithmetic circuit 126 in advance. . However, the display position is recorded under the condition that the distance between the distal end portion 14 and the observation site is kept constant without bending the distal end portion 14. When the corresponding data is read from the memory 127 in step S105, the corresponding data of the ejection display position M is read in step S106. In step S107, the character code of the target mark MP displayed at the water supply display position M is generated.

  In step S108, it is determined whether or not the foot switch 22 is half pressed. If it is determined that the foot switch 22 is half-pressed, the process proceeds to step S111. In step S111, the character signal is superimposed on the video signal according to the character data, and the target mark MP is displayed on the monitor 150 (see FIG. 6). Here, the target mark MP is represented by “x”.

  In step 112, it is determined whether or not the foot switch 22 has been fully pressed. If it is determined that the foot switch 22 has not been fully pressed, the process returns to step S108. When the position of the target mark MP is different from the position intended by the operator, the operator operates the operation lever 16D of the video scope 10 or the insertion portion of the video scope 10 so that the target mark MP is displayed at the intended position. 17 is operated. On the other hand, if it is determined that the foot switch 22 is fully pressed, the process proceeds to step S113, and the monitor output control circuit 124 controls the monitor display control circuit 123 so as to erase the target mark MP. Thereby, an image in which the cleaning water W is discharged without displaying the target mark MP is displayed (see FIG. 7).

  On the other hand, when it is determined in step S108 that the foot switch 22 is not half-pressed, the process proceeds to step S109, and it is determined whether or not the water feeding device 20 is connected. If it is determined that the water supply device 20 is not connected, the process returns to step S101, and if it is determined that the water supply device 20 is connected, the process proceeds to step S110. In step S110, it is determined whether or not the video scope 10 is connected. If it is determined that the video scope 10 is connected, the process returns to step S108, and if it is determined that the video scope 10 is not connected, the process returns to step S103.

  As described above, according to the present embodiment, the video scope 10 is provided with the water jet water supply channel 13 for cleaning the affected area, and the water supply device 20 is connected thereto. In addition, the processor 100 is provided with an arithmetic circuit 126, a monitor display control circuit 123, a monitor output control circuit 124, and an image composition processing circuit 128D. When the video scope 10 and the water supply device 20 are connected, the type of the video scope 10 and the water supply device 20 and the value of the set water supply pressure are detected. When the foot switch 22 is half-pressed, the monitor output control circuit 124 controls the monitor display control circuit 123 so that the target mark MP is displayed at the ejection display position M corresponding to the place where the cleaning water reaches.

  In the present embodiment, the display position of the target mark MP is experimentally measured and determined in advance. However, the display position may be calculated quantitatively based on the water supply pressure or the like.

It is the top view which showed the electronic endoscope system provided with the water supply apparatus for endoscopes. It is a block diagram of an electronic endoscope system. It is a block diagram of a water supply apparatus. It is the flowchart which showed the water supply operation | movement process performed in a system control circuit. It is the figure which showed the data regarding the type of the videoscope stored in memory, the water supply apparatus, and setting water supply pressure. It is the figure which showed the screen display of a monitor. It is the figure which showed the screen display of a monitor.

Explanation of symbols

10 Videoscope 13 Water jet water channel (Transport line)
19 CCD (imaging device)
DESCRIPTION OF SYMBOLS 20 Water supply apparatus 22 Foot switch 100 Processor 122 System control circuit 123 Monitor display control circuit 124 Monitor output control circuit 128D Image composition processing circuit

Claims (12)

A videoscope having an image sensor provided at the tip, and a transport pipeline for ejecting liquid toward the observation target;
A water supply device for supplying the liquid to the transport pipeline;
A processor that outputs a video signal based on an image signal read from the image sensor;
A display device that displays an observation image based on the video signal,
The processor is
Detecting means for detecting at least one of the type of the water supply device and the type of the video scope;
Liquid arrival display position specifying means for specifying the liquid arrival display position corresponding to the arrival position of the liquid ejected from the transport pipeline according to the type detected by the detection means with respect to the observation image;
An electronic endoscope system comprising: signal processing means for processing the video signal so as to display a target image indicating the liquid arrival display position together with the observation image.   The electronic endoscope system according to claim 1, wherein the type of the water supply device is determined according to a water supply pressure of the liquid to be ejected. The water supply device has setting means for setting a value of the water supply pressure of the liquid to be ejected;
The detection means detects the set value of the water supply pressure,
3. The electronic endoscope system according to claim 2, wherein the liquid arrival display position specifying means specifies the liquid arrival display position based on the value of the water supply pressure.   The type of the video scope is determined according to at least one of a tip ejection position and a tip diameter of the transport conduit with respect to a position of the imaging device at the tip. Electronic endoscope system.   The electronic endoscope system according to claim 1, wherein the signal processing unit processes the video signal so as to display a symbol mark as the target image. A display execution switch for executing display of the target image;
2. The electronic endoscope system according to claim 1, wherein the signal processing unit processes the video signal so as to display the target image in accordance with an operation on the execution switch.   The electronic endoscope system according to claim 6, wherein the signal processing unit erases the target image when the ejection of liquid by the water feeding device is executed. A water supply display execution switch for operating the water supply device to execute the ejection of liquid and executing the display of the target image;
The water supply display execution switch further includes operation detection means for detecting a first operation state corresponding to the display of the target image and a second operation state for executing the ejection of the liquid,
The signal processing means processes the video signal to display the target image when the first operation state is detected;
2. The electronic endoscope system according to claim 1, wherein the water feeding device performs ejection of the liquid when the second operation state is detected. 3. A videoscope having an image sensor provided at the distal end, a transport conduit for ejecting liquid toward the observation target, a water supply device for supplying the liquid to the transport conduit, and an observation image are displayed. A processor connected to a display device and outputting a video signal to the display device based on an image signal read from the image sensor;
Detecting means for detecting at least one of the type of the water supply device and the type of the video scope;
Liquid arrival display position specifying means for specifying the liquid arrival display position corresponding to the arrival position of the liquid ejected from the transport pipeline according to the type detected by the detection means with respect to the observation image;
A processor for an electronic endoscope apparatus, comprising: signal processing means for processing the video signal so as to display a target image indicating the liquid arrival display position together with the observation image. A detecting means for detecting at least one of a type of a water supply device for supplying the liquid to a videoscope having a transport pipeline for ejecting a liquid toward an observation target and a type of the videoscope;
Liquid arrival display position specifying means for specifying the liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the type detected by the detection means for the observation image;
An endoscope display control apparatus comprising: signal processing means for processing the video signal so as to display a target image indicating the liquid arrival display position together with the observation image. Detecting at least one of the type of the water supply device and the type of the videoscope for supplying the liquid to the videoscope having a transport pipeline for ejecting the liquid toward the observation target;
For the observation image, specify the liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the detected type,
The endoscope display control method, wherein the video signal is processed so that a target image indicating the liquid arrival display position is displayed together with the observation image. A detecting means for detecting at least one of a type of a water supply device for supplying the liquid to a videoscope having a transport pipeline for ejecting a liquid toward an observation target and a type of the videoscope;
Liquid arrival display position specifying means for specifying the liquid arrival display position according to the arrival position of the liquid ejected from the transport pipeline according to the type detected by the detection means for the observation image;
An endoscope display control program that causes a signal processing means for processing the video signal to function so as to display a target image indicating the liquid arrival display position together with the observation image.

Images