JP3583661B2 - Endoscope - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an endoscope provided with a solid-state imaging device.
[0002]
[Prior art]
In recent years, by inserting a slender insertion section into a body cavity, it is possible to observe organs in the body cavity, and, if necessary, perform various treatments using a treatment tool inserted through a treatment tool channel of an endoscope. Endoscopes are widely used. Among them, an electronic endoscope using a solid-state imaging device such as a CCD (Charge Coupled Device) as an imaging means is rapidly spreading.
[0003]
In such an electronic endoscope, as is well known, it is necessary to shield the built-in electric components. In Japanese Patent Application Laid-Open No. 8-136825, a signal cable has a plurality of input / output signal lines at a central portion, and an outer periphery where these signal lines are bundled is covered with a metal mesh tube for shielding. It is covered with an outer shield.
[0004]
The metal net tube is electrically connected to a cylindrical shield member that shields an outer peripheral portion of the solid-state imaging device, and a CCU (camera control unit) that performs signal processing on the solid-state imaging device from a signal processing circuit board. Also, a metal net pipe is provided on the outer periphery of the signal cable, and the signal cable is electrically connected to the CCU connector to obtain a high shielding effect.
[0005]
In addition, in order to improve operability, a remote switch is provided in an operation unit of the endoscope, thereby enabling various remote operations such as image enhancement, white balance adjustment, and recording on a VTR.
[0006]
[Problems to be solved by the invention]
In this case, the CCU side of the remote switch is divided into two systems, a signal cable for the imaging system and a signal cable for the remote switch. In order to enhance the shielding performance, a metal shield for each cable is provided inside the CCU connector. It is necessary to make the net tube conductive, and furthermore, to make it conductive with the conductive member inside the endoscope to make the potential equal.
[0007]
Conventionally, cables have been tied together with copper wires or signal wires have been used to connect between two shields and between the shields and conductive members inside the endoscope. However, there is a problem that assembly is extremely difficult. Was.
[0008]
(Object of the invention)
The present invention has been made in view of the above points, and an object of the present invention is to provide an endoscope that can be easily assembled and reduce the influence of harmful electromagnetic noise.
[0009]
[Means for Solving the Problems]
A first cable having one end connected to the solid-state imaging device, a plurality of signal lines bundled and a shield member provided outside thereof, and a second signal having one or more signal lines covered by the outer shield member. In an endoscope having a cable and a connector portion connectable to an external signal processing device,
The two shield member exposed portions at the connector-side end of the first and second signal cables are fixed to a conductive cable fixing member, and the cable fixing member is connected to the conductive connector portion. By providing a means for fixing to the constituent members and making the shield member, the cable fixing member, and the constituent members of the connector section of the plurality of signal cables have the same potential, the assembling work is simple, and harmful electromagnetic noises are reduced. The effect can be reliably reduced.
[0010]
Further, in an endoscope having a connector portion connectable to the camera control unit, a plurality of signal cables bundled and a plurality of signal cables provided with a shield member on the outside thereof are incorporated,
An exposed portion of the shield member at an end on the connector side of the plurality of signal cables is fixed to a conductive cable fixing member, and the cable fixing member is further fixed to a component of the conductive connector portion. By setting the shield member, the cable fixing member, and the constituent members of the connector portion in the plurality of signal cables to the same potential, the assembling work is simple and the influence of harmful electromagnetic noise can be reliably reduced.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First Embodiment)
1 to 6 relate to a first embodiment of the present invention, FIG. 1 shows an external structure of an electronic endoscope according to the first embodiment of the present invention, and FIG. 2 includes an electronic endoscope. FIG. 3 shows a cross-sectional structure of an imaging signal cable, FIG. 4 shows a cross-sectional structure of a CCU connector, and FIG. 5 shows a cross-section of a gasket for fixing the CCU cable in the CCU connector. FIG. 6 shows a cross section of a cable fixing tube of the CCU cable.
[0012]
As shown in FIG. 1, an electronic endoscope 1 according to a first embodiment of the present invention includes an elongated insertion portion 2 inserted into a body cavity or the like, and a grip portion provided at a base end side of the insertion portion 2. And a flexible universal cord 4 extending rearward from the operation unit 3.
The insertion portion 2 includes a hard distal end portion 5 having an objective optical system and the like from the distal end side, a bendable bending portion 6, and a soft flexible tube portion 7. It should be noted that instead of the flexible tube 7, a hard and hard affected part may be used.
[0013]
The operation section 3 is provided with a bending lever 8 for remotely bending the bending section 6. Further, a universal cord 4 made of a flexible material having a built-in signal cable for transmitting various signals and a light guide fiber for transmitting illumination light is connected to the operation unit 3.
[0014]
The universal cord 4 has a length sufficiently longer than the length of the insertion section 2, and a light guide connector 9 that can be connected to an external light source device 13 (see FIG. 2) is connected to the end. ing.
[0015]
The light guide connector 9 has a CCU cable 10 branched and extended from a side surface thereof, and a CCU connection connector which can be electrically connected to a camera control unit (hereinafter abbreviated as CCU) as a control device or a signal processing device at a terminal portion thereof. (Hereinafter, abbreviated as CCU connector) 11 is connected.
[0016]
FIG. 2 shows a configuration of an endoscope system 12 when an endoscope inspection is performed using the electronic endoscope 1.
The endoscope system 12 includes an electronic endoscope 1 having a built-in solid-state imaging device, a light source device 13 for supplying illumination light to the electronic endoscope 1, and a charge as a solid-state imaging device of the electronic endoscope 1. It comprises a CCU 15 for performing signal processing on a coupling element (abbreviated as CCD) 14 and a color monitor 16 connected to the CCU 15 for displaying a video signal.
[0017]
The light guide fiber 17 inserted into the electronic endoscope 1 is supplied with illumination light from the lamp 18 in the light source device 13 by connecting the light guide connector 9 at the proximal end of the light guide fiber 17 to the light source device 13. It is transmitted by the light guide fiber 17 and emits illumination light forward from the distal end surface fixed to the illumination window of the distal end portion 5 to illuminate a subject such as an affected part in a body cavity.
[0018]
An objective lens 19 is attached to an observation window provided adjacent to the illumination window at the distal end portion 5, and a CCD 14 is arranged at an image forming position thereof, and photoelectrically converts the formed optical image.
The CCD 14 is connected to the imaging system signal cable 21, and reaches the CCU connector 11 via the insertion section 2, the operation section 3, and the universal cord 4. FIG. 3 shows a cross-sectional structure of the imaging system signal cable 21.
[0019]
As shown in FIG. 3, the imaging system signal cable 21 has a plurality of input / output signal lines 22 at the center, and these signal lines 22 are bundled and covered with a metal net tube 23 as a shielding member disposed on the outer periphery thereof. The metal net tube 23 is covered with an outer tube 24 made of an electrically insulating material and disposed on the outer periphery thereof. The shield member is not limited to the metal net tube 23, but may be a spirally wound metal foil tape.
[0020]
The operation unit 3 is provided with a remote switch 25 for performing remote operations such as freeze, release, image enhancement, and white balance adjustment. A remote switch cable 26 for transmitting a remote signal connected to the remote switch 25 is a universal switch. Through the code 4, it reaches the CCU connector 11.
The remote switch cable 26 has substantially the same structure as the imaging signal cable 21 shown in FIG. The number of signal lines 22 of the remote switch cable 26 is smaller than that of the imaging system signal cable 21.
[0021]
The imaging system signal cable 21 has its distal end connected to the CCD 14, and in this case, the metal net tube 23 is connected to a cylindrical electric shield member 27 that shields the outer periphery of the CCD 14.
The structure for connecting the metal net tube 23 on the distal end side of the insertion portion of the imaging system signal cable 21 to the electric shield member 27 is the same as that of the prior art (JP-A-8-136825).
[0022]
By connecting the CCU connector 11 to the connector receiver 31 of the CCU 15, the CCD 14 and the remote switch 25 are electrically connected to the CCD drive circuit 32 and the video process circuit 33 built in the CCU 15.
[0023]
The CCD drive circuit 32 applies the CCD drive signal to the CCD 14 to read out the photoelectrically converted signal. The signal output from the CCD 14 is input to the video processing circuit 33, which converts the signal into a video signal. You. The video signal generated by the video process circuit 33 is output to the color monitor 16 and displays an endoscope image captured by the CCD 14.
[0024]
When a freeze instruction is given by operating the freeze switch of the remote switch 25, the instruction signal is input to the video processing circuit 33, and image writing to the memory in the video processing circuit 33 is prohibited, and writing is performed immediately before. The still image (frozen image) that repeatedly outputs the displayed image.
[0025]
When a release instruction is given by operating the release switch of the remote switch 25, if an image recording device such as a VTR is connected to the output terminal of the video process circuit 33, an image recording instruction signal is sent to the image recording device. , And start recording. Also, when an instruction for image enhancement and white balance adjustment is issued, control signals for image enhancement and white balance adjustment are input to the image enhancement circuit and white balance adjustment circuit in the video processing circuit 33, and the image enhancement and white balance adjustment are performed. So that you can do it.
[0026]
FIG. 4 is a sectional view of the CCU connector 11 provided at the end of the CCU cable 10.
The imaging system signal cable 21 and the remote switch cable 26 constituting the CCU cable 10 are collectively covered with a silicon tube 34, and the outside thereof is further covered with a skin 35 made of urethane resin.
[0027]
By covering the imaging system signal cable 21 and the remote switch cable 26 with a highly elastic silicon tube 34, the cross section does not become flat even if the CCU cable 10 is bent.
Further, both ends of the silicon tube 24 are not fixed, and can be freely moved even when bent. The outer cover 35 of the imaging cable 10 is adhered to a first CCU cable fixing base 37 disposed inside a resin-made buckling stopper 36 having a hollow conical shape, and then fixed in a water-tight manner by thread winding.
[0028]
The imaging system signal cable 21 and the remote switch cable 26 extending through the inside of the first CCU cable fixing base 37 to which the outer cover 35 is fixed are provided to improve EMC performance disposed inside the buckle 36 ( The internal conductor of the CCU connector 11 is passed through a first ferrite core 38 (to reduce the emission of harmful electromagnetic noise) and through a second ferrite core 39 spaced apart from the first ferrite core 38. , And a second CCU cable fixing base (connector body) 40 made of metal.
The second CCU cable fixing base 40 is substantially cylindrical and is disposed inside an insulating cover member 41, and the buckle 36 is fixed to the cover member 41.
[0029]
Between the first ferrite core 38 and the second ferrite core 39 adjacent to the second CCU cable fixing base 40, the elasticity in which the imaging system signal cable 21 and the remote switch cable 26 are inserted into the hollow portion is provided. A gasket 42 and a nut 43 are provided, and the nut 43 is screwed into a female thread of the second CCU cable fixing base 40. The cross section of the gasket 42 has an egg-shaped inner diameter as shown in FIG. 5, and is made of an elastic member such as rubber.
[0030]
Then, by tightening the nut 43 screwed into the second CCU cable fixing base 40, the gasket 42 is crushed in the axial direction, so that the imaging system signal cable 21 inserted inside and the remote switch cable 26 come into close contact with each other. It is squeezed and fixed.
[0031]
The ends of the two cables 21 and 26 are electrically conductive with two insertion holes formed in a cylinder as shown in FIG. 6 with the outer tube 24 peeled off and the metal net tube 23 exposed. Each of the metal net tubes 23 is fixed to the cable fixing tube 44 by the solder 52 in a state where the metal net tubes 23 are inserted into the respective insertion holes of the metal cable fixing tube 44 having Electrically conductive.
[0032]
Further, the cable fixing tube 44 is fixed to the conductive second CCU cable base 40 by a metal screw 45. Each metal net tube 23 is electrically connected to the second CCU cable base 40 via a cable fixing tube 44 and a metal screw 45.
[0033]
The end of the second CCU cable base 40 closer to the screw 45 than the position of the screw 45 is enlarged and opened, and an insulating plate 47 as a disk-shaped pin mounting member is provided at the opening through a fixing member 46. The connector pins 48 are attached to the respective pin fixing holes of the insulating plate 47.
[0034]
The signal lines 22 of the cables 21 and 26 are soldered to the rear ends of the connector pins 48, respectively. The shield wire 49 of the signal line 22 is also connected to the connector pin 48 connected to the ground (GND). After the connection, the vicinity of the connection portion is fixed with an insulating adhesive 50.
[0035]
The fixing member 46 protrudes in a cylindrical shape, and a recess is provided at an intermediate position thereof, so that a waterproof cap 51 for preventing moisture from adhering to the connector pins 38 when performing washing or the like can be attached.
[0036]
The second CCU cable fixing base 40 (at the outer peripheral portion of the insulating plate 47) protruding forward of the cover member 41 is covered with an insulating connector fixing ring 53. The connector fixing ring 53 allows the CCU connector 11 to be detachably connected to the connector receiver 31 of the CCU 15.
[0037]
Further, as shown in FIG. 2, the CCU 15 covers the CCD drive circuit 32 and the video process circuit 33 inside thereof with a conductive shield frame 54, and the shield frame 54 covers the CCD drive circuit 32 and the video process circuit 33. It is connected directly to the ground via a capacitor or not via a capacitor to shield noise emission and incidence.
[0038]
The grounds of the CCD drive circuit 32 and the video process circuit 33 are insulated from the outer case of the CCU 15, and the outer case of the CCU 15 is insulated from the ground of the commercial power supply. Then, the power required for the operation is supplied to the CCD drive circuit 32 and the video process circuit 33 via a power supply circuit in which the CCU 15 is insulated from the commercial power supply through an insulating transformer or the like (not shown) in the outer case. It has become.
[0039]
As described above, in the present embodiment, the rear ends of the imaging system signal cable 21 serving as the first signal cable and the remote switch cable 26 serving as the second signal cable are inserted into the CCU connector 11 through the CCU cable 10. Then, the outer sheath tube 24 at the end is peeled off, and the two metallic net tubes 23 as the respective shield members are fixed to the conductive cable fixing tube 44 by soldering. By fixing to the second CCU cable fixing base 40 as the internal conductor of the connector 11 via the metal screw 45, both metal net tubes 23 are connected to the cable fixing tube 44 and the second (as the internal conductor) of the CCU connector 11. Electromagnetic noise seal for preventing radiation and incidence of electromagnetic noise that is electrically connected to the second CCU cable fixing base 40 to make it equipotential Constitute a mechanism (electromagnetic noise shielding mechanism).
[0040]
As described above, in the present embodiment, the ends of the imaging system signal cable 21 and the remote switch cable 26 inserted through the CCU cable 10 are peeled off and exposed in the CCU connector 11 from the outer sheath tubes 24 at the respective ends. By assembling the metal net tube 23 through the insertion hole of the conductive cable fixing tube 44 and fixing it with the solder 52, it is possible to assemble it by a simple operation. And a high shielding function can be ensured.
Therefore, the potentials of the metal net tube 23, the cable fixing tube 44, and the second CCU cable fixing base 40 of the imaging system signal cable 21 and the remote switch cable 26 are made equal, thereby radiating harmful electromagnetic wave noise and It is less affected by the incidence.
[0041]
For example, the CCD output signal from the image pickup system signal cable 21 is generally weak, and is susceptible to electromagnetic noise from the outside when it enters the signal line 22 for transmitting the signal. Can be effectively prevented, the signal can be transmitted to the video process circuit 33 with a good S / N, and the color monitor 16 can display an endoscope image with a good S / N, that is, a good image quality.
Further, the signal line 22 for transmitting the CCD drive signal easily emits electromagnetic noise to the outside when transmitting a high-frequency signal such as a horizontal transfer signal, for example. Can be prevented.
[0042]
This embodiment has the following effects.
The assembly can be performed with a simple operation, and radiation and incidence of harmful electromagnetic noise can be surely reduced, and an endoscope image with a good S / N can be obtained.
Even if the cable on the connector side is firmly fixed and a tensile stress is applied to the cable, there is no breakage of the connection portion between the signal line and the connector pin.
[0043]
Easy assembly work.
[0044]
(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.
An endoscope system 12 'shown in FIG. 7 has an endoscope 61 according to the second embodiment, and the endoscope 61 is detachable from the optical endoscope 62 and the optical endoscope 62. And a television camera 63 connected to (attached to) the camera. That is, the endoscope 61 is configured by an endoscope external to the television camera.
[0045]
The optical endoscope 62 has an elongated insertion portion 64, an operation portion 65 provided at a rear end thereof, an eyepiece portion 66 provided at a rear end of the operation portion 65, and extends from a side portion of the operation portion 65. And a light guide connector 68 at an end of the light guide cable 67 is detachably connected to the light source device 13.
[0046]
By this connection, illumination light is supplied to the rear end of the light guide fiber 69 inserted into the light guide cable 68, and this illumination light is transmitted by the light guide fiber 69, and the light guide at the distal end of the insertion portion 64 is provided. The illumination light transmitted from the fiber end surface is emitted to the subject side such as the affected part.
[0047]
An objective lens 71 is attached to the observation window at the distal end of the insertion portion 64, and an optical image is formed at the image forming position by the objective lens 71, and the optical image is rearwardly provided by the image guide fiber 72. It is transmitted and can be magnified and observed by the eyepiece 73 of the eyepiece 66.
[0048]
When a television camera 63 is mounted on the eyepiece 66, an optical image is formed on a CCD 75 disposed at an imaging position by an imaging lens 74 provided on the television camera 63, and photoelectric conversion is performed by the CCD 75. You.
[0049]
The CCD 75 is connected to the imaging system signal cable 21 inserted in the camera cable 76, and the remote switch cable 26 connected to the remote switch 25 provided in the television camera 63 is also inserted in the camera cable 75, The signal cable 21 and the camera cable 75 are connected to the connector pins 48 of the CCU connector 11 at the rear end.
[0050]
The CCU 75 of the television camera 63 is covered with a conductive shield frame 76, and the shield frame 76 is connected to the metal net tube 23 at the front end of the imaging system signal cable 21.
[0051]
As described in the first embodiment, the CCU connector 11 is detachably connected to the connector receiver 31 of the CCU 15.
The structure of the CCU connector 11 is the same as that described in the first embodiment. The configuration of the CCU 15 is the same as that described in the first embodiment.
This embodiment also has the same effects as the first embodiment.
[0052]
In the above description, the imaging system signal cable 21 and the remote switch cable 26, that is, the first and second signal cables are electrically connected and fixed to the shield members of the CCU connector 11 in the CCU connector 11. Has been described, but the third signal cable can be electrically connected and fixed to the shield member of the CCU connector 11 in substantially the same manner.
[0053]
That is, when the first, second, and third signal cables are provided, for example, if three insertion holes are provided in the cable fixing tube 44 in FIG. it can. In addition, the present invention can be similarly applied to a case where there are fourth or more signal cables.
Further, the second or third signal cable is not limited to the case of a plurality of signal lines, but can be applied to the case of one signal line (two including shield lines).
[0054]
[Appendix]
1. A first cable having one end connected to the solid-state imaging device, a plurality of signal lines bundled and a shield member provided outside thereof, and a second signal having one or more signal lines covered by the outer shield member. In an endoscope having a cable and a connector portion connectable to an external signal processing device,
The two shield member exposed portions at the connector-side end of the first and second signal cables are fixed to a conductive cable fixing member, and the cable fixing member is connected to the conductive connector portion. An endoscope provided with means for fixing to a constituent member and for setting a shield member, a cable fixing member, and a constituent member of a connector portion of the plurality of signal cables to the same potential.
[0055]
2. In an endoscope having a connector portion connectable to a camera control unit, a plurality of signal cables bundled and a plurality of signal cables provided with a shield member on the outside thereof are incorporated,
An exposed portion of the shield member at an end on the connector side of the plurality of signal cables is fixed to a conductive cable fixing member, and the cable fixing member is further fixed to a component of the conductive connector portion. An endoscope, wherein a shield member, a cable fixing member, and a constituent member of a connector part in the plurality of signal cables are set to the same potential.
3. 3. The endoscope according to claim 2, wherein the shield member is a metal net tube.
[0056]
4. A connector part that can be connected to the camera control unit,
A signal cable in which a plurality of signal lines are bundled and a shield member is provided outside thereof,
A cable fixing member having conductivity that fixes a shield member exposed portion at an end of the plurality of signal cables on the connector side,
Fixing the cable fixing member, a component member of the connector portion having conductivity,
An endoscope comprising: a shield member, a cable fixing member, and a constituent member of a connector portion in the plurality of signal cables, which are set to the same potential.
[0057]
5. In the above supplementary notes 2 and 4, the shield member is a metal net pipe.
6. In Supplementary Note 2, at least one of the plurality of signal cables is connected to a solid-state imaging device arranged at the end of the endoscope insertion section.
7. In Supplementary Note 4, a plurality of the signal cables are provided.
8. In Supplementary Note 4, the signal cable is connected to a solid-state imaging device disposed at the end of the endoscope insertion section.
[0058]
9. In the above supplementary note 1, the second signal cable transmits a remote signal for remotely controlling the operation of the signal processing device.
10. In the above Supplementary Note 1, the endoscope is an electronic endoscope in which a solid-state imaging device is disposed at a distal end of an elongated insertion portion.
11. In the above Supplementary Note 1, the endoscope is an external endoscope that is mounted on an optical endoscope and has a built-in solid-state imaging device and is attached to a television camera.
[0059]
【The invention's effect】
As described above, according to the present invention, the first cable having one end connected to the solid-state imaging device, bundling a plurality of signal lines, and providing a shield member on the outside, and one or more signal lines on the outside. An endoscope having a connector portion that can be connected to an external signal processing device with a second signal cable covered with a shield member of
The two shield member exposed portions at the connector-side end of the first and second signal cables are fixed to a conductive cable fixing member, and the cable fixing member is connected to the conductive connector portion. Means for fixing the shield member, the cable fixing member in the plurality of signal cables, and the constituent member of the connector section to the same potential are provided, so that the assembling work is simple, and harmful electromagnetic noise The effect can be reliably reduced.
[0060]
Further, in an endoscope having a connector portion connectable to the camera control unit, a plurality of signal cables bundled and a plurality of signal cables provided with a shield member on the outside thereof are incorporated,
An exposed portion of the shield member at an end on the connector side of the plurality of signal cables is fixed to a conductive cable fixing member, and the cable fixing member is further fixed to a component of the conductive connector portion. Since the shield member, the cable fixing member, and the constituent members of the connector portion of the plurality of signal cables are set to the same potential, the assembling work is simple, and the influence of harmful electromagnetic noise is reliably reduced. it can.
[Brief description of the drawings]
FIG. 1 is a view showing an appearance of an electronic endoscope according to a first embodiment of the present invention.
FIG. 2 is a block diagram showing a schematic configuration of an endoscope system including an electronic endoscope.
FIG. 3 is a cross-sectional view illustrating a structure of an imaging system signal cable.
FIG. 4 is a sectional view showing the structure of the CCU connector.
FIG. 5 is a sectional view showing the structure of a gasket in the CCU connector.
FIG. 6 is a sectional view showing a structure of a cable fixing tube in the CCU connector.
FIG. 7 is a block diagram showing a schematic configuration of an endoscope system provided with a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Electronic endoscope 2 ... Insertion part 3 ... Operation part 4 ... Universal cord 10 ... CCU cable 11 ... CCU connector 14 ... CCD
15 ... CCU
19 Objective lens 21 Image pickup system signal cable 22 (Input / output) signal line 23 Metal net tube 24 Outer tube 25 Remote switch 26 Remote switch cable 27 Electric shield member 31 Connector receiver 32 CCD drive circuit 33 ... Video process circuit 36 ... Break prevention 38, 39 ... Ferrite core 40 ... CCU cable fixing base 41 ... Cover member 42 ... Gasket 43 ... Nut 44 ... Cable fixing tube 45 ... Screw 46 ... Fixing member 48 ... Connector pin 49 ... Shield line

Claims (3)

A first cable having one end connected to the solid-state imaging device, a plurality of signal lines bundled and a shield member provided outside thereof, and a second signal having one or more signal lines covered by the outer shield member. In an endoscope having a cable and a connector portion connectable to an external signal processing device,
The two shield member exposed portions at the connector-side end of the first and second signal cables are fixed to a conductive cable fixing member, and the cable fixing member is connected to the conductive connector portion. An endoscope provided with means for fixing to a constituent member and for setting a shield member, a cable fixing member, and a constituent member of a connector portion of the plurality of signal cables to the same potential. In an endoscope having a connector portion connectable to a camera control unit, a plurality of signal cables bundled and a plurality of signal cables provided with a shield member on the outside thereof are incorporated,
An exposed portion of the shield member at an end on the connector side of the plurality of signal cables is fixed to a conductive cable fixing member, and the cable fixing member is further fixed to a component of the conductive connector portion. An endoscope, wherein a shield member, a cable fixing member, and a constituent member of a connector part in the plurality of signal cables are set to the same potential. The endoscope according to claim 2, wherein the shield member is a metal net tube.

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