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WO2021186509A1 - Système d'endoscope - Google Patents

Système d'endoscope Download PDF

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Publication number
WO2021186509A1
WO2021186509A1 PCT/JP2020/011531 JP2020011531W WO2021186509A1 WO 2021186509 A1 WO2021186509 A1 WO 2021186509A1 JP 2020011531 W JP2020011531 W JP 2020011531W WO 2021186509 A1 WO2021186509 A1 WO 2021186509A1
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WO
WIPO (PCT)
Prior art keywords
endoscope
video processor
discharge
discharge circuit
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/011531
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English (en)
Japanese (ja)
Inventor
奈菜子 姥山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olympus Corp
Original Assignee
Olympus Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olympus Corp filed Critical Olympus Corp
Priority to PCT/JP2020/011531 priority Critical patent/WO2021186509A1/fr
Publication of WO2021186509A1 publication Critical patent/WO2021186509A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances

Definitions

  • the present invention relates to an endoscope system, particularly an endoscope system including an endoscope and a processor capable of connecting the endoscope.
  • An endoscope system including an endoscope that captures a subject inside a subject and a video processor that performs predetermined image processing on the observation image of the subject captured by the endoscope and outputs the image is medical treatment. Widely used in fields and industrial fields.
  • multiple types of endoscopes can be connected to one video processor, such as continuous examination of patients or replacement of different types of endoscopes during surgery.
  • the endoscope connected to the video processor is so-called live wire removed, for example, the capacitor on the circuit of the endoscope or the video processor may remain charged.
  • the endoscope is connected to the video processor again when the electric charge is accumulated in the capacitor (when the electric charge is not completely discharged), the IC or the like connected on the circuit by the electric charge charged in the capacitor is used. There is a risk of damaging the electrical components of.
  • the video processor is turned off, and then the endoscope system is shut down (including discharge). It is conceivable to remove the endoscope after this down-down process is completed. Then, the power of the video processor is turned on again, the endoscope to be replaced is connected to the video processor, and then the endoscope system is started up.
  • Japanese Patent Application Laid-Open No. 2009-189528 describes a technique for stopping the drive signal and power supply to the image sensor in the endoscope when it is detected that the removal of the endoscope has started.
  • the endoscope system is started up and down during the off and on operations. There was a time loss for replacing the endoscope for about the same amount of time. In particular, when the endoscope needs to be replaced frequently, the time lag until the endoscope can be actually used has significantly reduced the workability of the user.
  • the present invention has been made in view of the above circumstances, and when the endoscope is inserted and removed from the video processor, the live line of the endoscope is inserted and removed without requiring the power off / on operation of the video processor.
  • the endoscope system is an endoscope system including an endoscope and a video processor capable of connecting the endoscope, and the endoscope and the video processor.
  • a discharge circuit arranged on at least one side to discharge the accumulated charge, a detection unit for detecting the connection between the endoscope and the video processor, and the endoscope based on the detection result of the detection unit.
  • a control unit for performing such sequence control and discharge control of the discharge circuit is provided.
  • FIG. 1 is a block diagram showing a configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a timing chart showing system control and scope control in the endoscope system of the first embodiment.
  • FIG. 3 relates to the endoscope system of the first embodiment, and in the conventional endoscope system, a conventional capacitor arranged on a video signal line when the endoscope is connected to a video processor. It is a circuit diagram which showed the peripheral circuit.
  • FIG. 4 is a circuit diagram showing a capacitor and a discharge resistance arranged on a video signal line when the endoscope is connected to a video processor in the endoscope system of the first embodiment.
  • FIG. 1 is a block diagram showing a configuration of an endoscope system according to a first embodiment of the present invention.
  • FIG. 2 is a timing chart showing system control and scope control in the endoscope system of the first embodiment.
  • FIG. 3 relates to the endoscope system of the first embodiment, and in the conventional endoscope system
  • FIG. 5 is a block for explaining scope control after the endoscope removal button is pressed in the endoscope system of the first embodiment.
  • FIG. 6 is a block for explaining scope control after the endoscope removal button is pressed in the endoscope system of the first embodiment.
  • FIG. 7 is a block diagram showing a configuration of a modified example of the endoscope system according to the first embodiment.
  • FIG. 8 is a circuit diagram showing a capacitor and a discharge resistance arranged on a video signal line when the endoscope is connected to a video processor in a modified example of the endoscope system of the first embodiment. be.
  • FIG. 9 is a block diagram showing a configuration of an endoscope system according to a second embodiment of the present invention.
  • FIG. 10 is a timing chart showing system control and scope control in the endoscopic system of the second embodiment.
  • FIG. 11 is a block diagram showing a configuration of an endoscope system according to a third embodiment of the present invention.
  • FIG. 12 is a circuit diagram showing a configuration of a fast discharge circuit in the endoscope system according to the third embodiment.
  • FIG. 13 is a block diagram showing a configuration of an endoscope system according to a fourth embodiment of the present invention.
  • FIG. 1 is a block diagram showing a configuration of an endoscope system according to a first embodiment of the present invention
  • FIG. 2 shows system control and scope control in the endoscope system of the first embodiment. It is a timing chart.
  • the endoscope system 1 includes an endoscope 2 for observing and imaging a subject, and an imaging signal from the endoscope 2 connected to the endoscope 2.
  • a video processor 3 having a light source device for supplying illumination light for illuminating a subject and a monitor device 5 for displaying an observation image according to an imaging signal while performing predetermined image processing by inputting There is.
  • the endoscope 2 is an insertion portion inserted into the body cavity of a subject, an operation portion arranged on the proximal end side of the insertion portion and operated by the operator. It is configured to have a universal cord or the like provided with one end so as to extend from the side of the operation unit.
  • a connector portion for internally installing a CPU or the like for controlling the drive of the endoscope 2 is provided on the base end side of the universal cord. Further, a connection connector 28 for connecting to the video processor 3 is provided at the end of the connector portion, and is detachably connected to the connection connector 38 in the video processor 3.
  • the endoscope 2 has a scope substrate arranged on the connector portion described above, and a CPU 21 is arranged on the scope substrate.
  • the CPU 21 is composed of a so-called FPGA (Field Programmable Gate Array), receives operation control from the video processor 3, and forms a timing adjustment unit that adjusts various timings related to the drive of the image processor. At the same time, the image pickup signal from the image pickup unit is appropriately processed toward the video processor 3.
  • FPGA Field Programmable Gate Array
  • an imaging unit 22 for imaging the subject is arranged at the tip of the insertion unit.
  • the image pickup unit 22 includes an image pickup element (CMOS image sensor or CCD image sensor) arranged on an imaging surface in an objective optical system (not shown) including a lens that receives a subject image, and a driver (CMOS image sensor or CCD image sensor) that drives the image pickup element. It is equipped with DRV) and the like.
  • the image sensor described above is a solid-state image sensor composed of a COMS image sensor in the present embodiment, and the subject is photoelectrically converted and a predetermined image pickup signal is output toward the subsequent stage. There is.
  • the image pickup element receives a plurality of power supply voltages (for example, digital power supply voltage, interface power supply voltage, analog power supply voltage) generated by the video processor 3 and is also supplied from the video processor 3. It is driven by a predetermined drive clock pulse signal to be transmitted.
  • a plurality of power supply voltages for example, digital power supply voltage, interface power supply voltage, analog power supply voltage
  • the discharge circuit 25 is connected to the line of the imaging signal (video signal) output from the imaging unit 22 (hereinafter, the video signal line).
  • the video signal line The electric charge accumulated in the discharge circuit 25 and the capacitor in the video signal line described above will be described in detail later.
  • the endoscope system 1 of the present embodiment includes a video processor 3 that is connected to the endoscope 2 and inputs the imaging signal to perform predetermined image processing.
  • the video processor 3 is a control device connected to the endoscope, and a CPU 31 that controls each circuit in the video processor 3 and a scope control circuit 32 for controlling the endoscope 2 and the like. Be prepared.
  • the CPU 31 is composed of, for example, an FPGA (Field Programmable Gate Array) and controls a switching power supply (SW power supply), various power supply units, an image processing unit 35, a display unit 36, a scope control circuit 32, and the like. ..
  • the video processor 3 is a circuit that adjusts a known analog signal. For example, a synchronization signal generated in a predetermined circuit, a drive CLK is subjected to a predetermined phase correction, or the like, and is internally viewed. It is provided with an analog front end having a function of outputting to the mirror 2.
  • the analog front-end board includes a switching power supply, various power supply units, various processing signal output units, and the like.
  • the video processor 3 further includes an image processing unit 35, a display unit 36, a connector 38, a detection unit 33, and a scope control circuit 32.
  • the image processing unit 35 has a function of performing predetermined image processing on the video signal from the endoscope 2 and outputting it to the monitoring device 5 under the control of the CPU 31.
  • the display unit 36 is a display device having a display screen having a touch panel function (operation instruction function), and is connected to the CPU 31 so that a process corresponding to a user operation can be executed. There is.
  • the display unit 36 has a function as a display unit that permits removal of the scope. Further, in the present embodiment, as a part of the touch panel function in the display unit 36, a function of an endoscope removal button 37 for removing the endoscope by a user's operation is provided.
  • the detection unit 33 detects the connection between the connection connector 38 connected to the connection connector 28 described above in the endoscope 2 and the connection connector 28, and transmits the connection detection information to the CPU 31. ..
  • the scope control circuit 32 has a function of controlling each part of the endoscope 2 under the control of the CPU 31. The function of the scope control circuit 32 will be described in detail later.
  • FIG. 3 is a circuit diagram showing a conventional peripheral circuit of a capacitor arranged on a video signal line when an endoscope is connected to a video processor in a conventional endoscope system
  • FIG. 4 is a circuit diagram showing a conventional peripheral circuit of a capacitor arranged on a video signal line.
  • a predetermined capacitor is arranged in series in a video signal line connected to an image processing IC (for example, FPGA) of each of the endoscope and the video processor. It is installed. When the video signal line becomes live while the endoscope having such a configuration is connected to the video processor, these capacitors are charged with a predetermined charge.
  • image processing IC for example, FPGA
  • the charge charged in the capacitor may cause damage to electrical components such as ICs.
  • the endoscope system of the first embodiment is used for endoscopy in the video signal lines 20B and 30B between the CPU 21 in the scope substrate of the endoscope 2 and the CPU 31 in the video processor 3.
  • a discharge circuit 25 composed of a pull-down resistor is connected to the video signal line 20B on the mirror 2 side.
  • the discharge circuit 25 is configured as a pull-down resistor connected between the output terminal of the capacitor 20C arranged in series on the video signal line 20B and the ground.
  • these pull-down resistors are pull-down resistors connected between the output terminal of the capacitor and the ground, but in the present embodiment, they have a relatively large capacitance and the operation of the video signal line to be arranged. It is composed of a resistor having a resistance value that does not affect, for example, a resistance value of 10 k ⁇ .
  • the endoscope 2 When the endoscope 2 is connected to the video processor 3 (the connection is determined based on the detection result of the detection unit 33) and the power is on, the endoscope 2 is connected from the video processor 3. At the time of removal, the user first presses the endoscope removal button 37 on the display unit 36 which is a touch panel as shown in FIG.
  • the system control When the CPU 31 detects that the endoscope removal button 37 is pressed, the system control is once put into a standby state, and then the scope control circuit 32 is instructed to process the scope down (see FIG. 2). Upon receiving the scope lowering instruction from the CPU 31, the scope control circuit 32 executes the scope lowering control so as to turn off the power supply to the endoscope 2 (see FIGS. 5 and 2).
  • the standby time for system control described above is set corresponding to the discharge time. That is, it is set corresponding to a slightly different discharge time for each model of the endoscope 2.
  • the CPU 21 in the endoscope 2 has elapsed a predetermined time (a time in which the electric charge accumulated in the capacitor in the video signal line by the discharge circuit 25 in the endoscope 2 is sufficiently discharged). After that, the fact that the scope shutdown is completed is transmitted to the scope control circuit 32 on the video processor 3 side (see FIG. 6).
  • the scope control circuit 32 When the scope control circuit 32 receives the scope start-up completion notification from the endoscope 2 side, the scope control circuit 32 transmits the information to the CPU 31.
  • the CPU 31 receives the scope start-up completion notification information, the CPU 31 displays predetermined notification information in order to notify the display unit 36 of the permission to remove the scope. For example, as shown in FIG. 6, "the scope can be removed" is displayed on the display unit 36.
  • the CPU 31 controls the image processing unit 35 in order to display the same "scope can be removed" to the monitor device 5 as described above (see FIG. 6).
  • the CPU 31 on the video processor 3 side does not obtain the above-mentioned scope start-up completion notification during the above-mentioned system control standby time after pressing the endoscope removal button 37, the user is notified of the video.
  • the power of the processor 3 may be turned off to notify that the endoscope 2 is to be removed.
  • the notification of the removal permission of the endoscope 2 is not limited to the display on the display unit 36 or the monitor 5, and may be notified to the user by video, audio, or the like.
  • ⁇ Modified example of the first embodiment> 7 and 8 are diagrams showing a configuration of a modified example of the endoscope system according to the first embodiment.
  • the modified example is characterized in that the discharge circuit 34 is also connected to the video signal line 30B (see FIG. 8) in the video processor 3.
  • the discharge circuit 34 is configured as a pull-down resistor connected between the output terminal of the capacitor 30C arranged in series on the video signal line 30B and the ground, and the above-mentioned discharge circuit 25 has the same effect.
  • FIG. 9 is a block diagram showing a configuration of an endoscope system according to a second embodiment of the present invention
  • FIG. 10 shows system control and scope control in the endoscope system of the second embodiment. It is a timing chart.
  • the endoscope system 1 of the second embodiment is characterized in that when the endoscope 2 is removed from the video processor 3, the removal operation by the endoscope removal button 37 is not required.
  • the video processor 3 according to the second embodiment does not include the endoscope removal button 37 provided on the display unit 36 in the first embodiment.
  • the endoscope 2 when the endoscope 2 is removed from the video processor 3 and the endoscope 2 is reconnected to the video processor 3, the endoscope 2 is used. Regardless of whether or not the charge is accumulated in the video signal line of the above, it is possible to accurately discharge the charge accumulated in the endoscope 2 connected (or reconnected) to the video processor 3.
  • the scope control circuit 32 In the endoscope system 1 of the second embodiment, when the CPU 31 detects that the endoscope 2 is connected (including reconnection) to the video processor 3 based on the detection result from the detection unit 33. After the system control is once put into the standby state, the scope control circuit 32 is instructed to process the scope down (see FIG. 10). When the scope control circuit 32 receives the scope start-up instruction from the CPU 31, the scope control circuit 32 controls the scope start-up so as to turn off the power supply to the connected endoscope 2 (whether or not the electric charge is accumulated). Execute (see FIG. 10).
  • the electric charge accumulated in the capacitor in the video signal line 20B is accompanied by a predetermined time constant by the discharge circuit 25. It is gradually discharged.
  • the standby time for system control is appropriately set as in the first embodiment.
  • the CPU 21 in the endoscope 2 is sufficiently charged for a predetermined time set in advance (the charge accumulated in the capacitor in the video signal line by the discharge circuit 25 in the endoscope 2). After the time for discharging) has elapsed, the fact that the scope has been shut down is transmitted to the scope control circuit 32 on the video processor 3 side.
  • the scope control circuit 32 When the scope control circuit 32 receives the scope start-up completion notification (discharge completion) from the endoscope 2 side, the scope control circuit 32 transmits the information to the CPU 31. Upon receiving the scope start-up completion notification information, the CPU 31 then instructs the scope control circuit 32 to perform the scope start-up process related to the endoscope 2 (see FIG. 10).
  • the CPU 21 in the endoscope 2 receives a scope start-up instruction from the scope control circuit 32 and executes a predetermined start-up process for each part of the endoscope 2.
  • the CPU 31 in the video processor 3 controls the scope control circuit 32 in order to execute normal control on the endoscope 2.
  • the discharge circuit 34 as in the modified example of the first embodiment may be provided on the video processor 3 side.
  • FIG. 11 is a block diagram showing the configuration of the endoscope system according to the third embodiment of the present invention
  • FIG. 12 shows the configuration of the fast discharge circuit in the endoscope system according to the third embodiment. It is a circuit diagram.
  • the endoscope system 1 of the third embodiment is characterized in that a fast discharge circuit 39 is connected to a video signal line in the video processor 3.
  • the fast discharge circuit 39 is composed of, for example, a semiconductor switch 41 such as an FET and a low resistance 40 connected in series with the semiconductor switch 41, and is arranged in series on a video signal line. It is designed to be connected between the output terminal of the capacitor and the ground.
  • the semiconductor switch 41 is controlled to be turned on and off by the control of the CPU 31.
  • the low resistance 40 is composed of a sufficiently low resistance value, and is set to at least a much lower resistance value than the pull-down resistance in the discharge circuit 25 in the first and second embodiments.
  • the pull-down resistor in the discharge circuit 25 in the first and second embodiments described above has a relatively large capacitance and does not affect the operation of the video signal line to be arranged, for example, is set to a resistance value of about 10 k ⁇ . Therefore, the discharge time also required a time corresponding to these values (that is, it cannot be said to be an extremely short time).
  • the fast discharge circuit 39 in the third embodiment can discharge in an extremely short time by on / off control of the CPU 31.
  • the shutdown sequence when the endoscope 2 is connected to the video processor 3 can be completed in an extremely short time, and the time until the scope startup can be shortened.
  • FIG. 13 is a block diagram showing a configuration of an endoscope system according to a fourth embodiment of the present invention.
  • the endoscope system 1 of the fourth embodiment is characterized in that power is supplied from the video processor to the endoscope by so-called wireless power supply.
  • the video processor 3 in the endoscope system 1 of the fourth embodiment includes a power supply unit 81 that supplies electric power to the endoscope 2 by wireless power supply.
  • the endoscope 2 in the present embodiment includes a power receiving unit 91 that receives electric power via the non-contact unit 61. Further, the endoscope 2 includes a rectifier circuit 92 that rectifies the electric power received by the power receiving unit 91, and a linear regulator LDO 93 that converts the rectified voltage into a constant voltage under the control of the CPU 21.
  • the voltage of the LDO 93 is detected by the voltage detection unit 96, AD-converted by the A / D 95, transmitted from the modulation / demodulation circuit 94 to the modulation / demodulation circuit 82 in the video processor 3, and further transmitted to the CPU 31 in the video processor 3. It has become.
  • a predetermined drive control signal is transmitted from the CPU 31 in the video processor 3 to the image sensor 22 via the transmitter TX83 and the receiver RX97.
  • a detection unit having the same detection function as the detection unit 33 described above is provided, and the endoscope 2 side has the same configuration as the fast discharge circuit 39 in the third embodiment.
  • the discharge circuit 98 is connected to a video signal line (not shown).
  • the discharge circuit 98 completely discharges the residual charge in the endoscope 2. .. After that, power is supplied from the power feeding unit 81 in the video processor 3 to the power receiving unit 91.
  • the CPU 21 in the endoscope 2 turns on the power of the LDO 93 after confirming the state of the power supply supplied to the image sensor 22. After that, after the voltage detection unit 96 confirms the state of the power supply supplied to the LDO 93, the CPU 31 in the video processor 3 captures a predetermined drive control signal via the transmitter TX83 and the receiver RX97. It transmits to the element 22.
  • the present invention is not limited to the above-described embodiment, and various modifications, modifications, and the like can be made without changing the gist of the present invention.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

La présente invention est un système d'endoscope (1) comprenant un endoscope (2) et un processeur vidéo qui peut se raccorder à l'endoscope (2), le système d'endoscope étant pourvu d'un circuit de décharge (25) qui est disposé dans l'endoscope (2) et/ou le processeur vidéo (3) et décharge une charge accumulée, une unité de détection (33) qui détecte le raccord de l'endoscope (2) et le processeur vidéo (3), et une UC (31) qui effectue une commande de séquence associée à l'endoscope (2) et une commande de décharge du circuit de décharge sur la base des résultats de détection de l'unité de détection (33) ; et, lorsque la pression d'un bouton de libération d'endoscope (37) est détectée, l'UC (31) commande un circuit de commande de portée (32) pour effectuer un traitement de séquence d'arrêt pour l'endoscope, comprenant un traitement de décharge.
PCT/JP2020/011531 2020-03-16 2020-03-16 Système d'endoscope Ceased WO2021186509A1 (fr)

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Application Number Priority Date Filing Date Title
PCT/JP2020/011531 WO2021186509A1 (fr) 2020-03-16 2020-03-16 Système d'endoscope

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PCT/JP2020/011531 WO2021186509A1 (fr) 2020-03-16 2020-03-16 Système d'endoscope

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024241479A1 (fr) * 2023-05-23 2024-11-28 オリンパスメディカルシステムズ株式会社 Processeur d'endoscope, procédé de décharge d'endoscope et programme de décharge d'endoscope

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007007339A (ja) * 2005-07-04 2007-01-18 Olympus Medical Systems Corp 内視鏡システム
JP2013031500A (ja) * 2011-08-01 2013-02-14 Hoya Corp 電子内視鏡用プロセッサ及び電子内視鏡システム
EP2609867A1 (fr) * 2011-12-26 2013-07-03 Samsung Medison Co., Ltd. Appareil de diagnostic ultrasonique et son procédé de contrôle
US20170000456A1 (en) * 2015-07-01 2017-01-05 Edan Instruments, Inc. Apparatus and method for semi-automatic ultrasound transducer connector lock

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007007339A (ja) * 2005-07-04 2007-01-18 Olympus Medical Systems Corp 内視鏡システム
JP2013031500A (ja) * 2011-08-01 2013-02-14 Hoya Corp 電子内視鏡用プロセッサ及び電子内視鏡システム
EP2609867A1 (fr) * 2011-12-26 2013-07-03 Samsung Medison Co., Ltd. Appareil de diagnostic ultrasonique et son procédé de contrôle
US20170000456A1 (en) * 2015-07-01 2017-01-05 Edan Instruments, Inc. Apparatus and method for semi-automatic ultrasound transducer connector lock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024241479A1 (fr) * 2023-05-23 2024-11-28 オリンパスメディカルシステムズ株式会社 Processeur d'endoscope, procédé de décharge d'endoscope et programme de décharge d'endoscope

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