JP3898838B2 - Endoscope - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an endoscope having a solid-state imaging device that images a subject at a distal end portion of an insertion portion.
[0002]
[Prior art]
A solid-state image sensor such as a CCD that images the observation target region is provided at the distal end of the insertion portion of the endoscope, and an image signal of the captured image is obtained and observed on a monitor or recorded on an image recording device such as a VTR. Various types of electronic endoscopes, which are endoscopes that can be used, have been proposed and have recently been used in general.
[0003]
An endoscope in which a solid-state image sensor is built in the distal end portion of the insertion portion has an objective lens assembled in front of the solid-state image sensor and is located behind the solid-state image sensor as proposed in, for example, Japanese Patent Laid-Open No. 4-313717. A circuit board that constitutes a circuit that drives a solid-state imaging device is provided, and a signal cable in which a plurality of signal lines for transmitting image signals to the base end side are passed through the circuit board and connected to the base end side is connected. It is common.
[0004]
[Problems to be solved by the invention]
However, in the conventional endoscope as described above, the durability of the connection portion between the circuit board and the signal cable and the connection portion between the solid-state imaging device and the circuit board is not particularly considered, and the bending portion of the insertion portion is not considered. Stresses such as tensile stress, torsional stress, and tilting stress are intensively generated in the signal cable by bending operation, twisting of the insertion part, etc., and at the connection part between the circuit board and the signal cable and the connection part between the solid-state image sensor and the circuit board Disconnection and poor contact may occur. In this case, there is a risk that noise will increase in the image or problems such as no image appearing.
[0005]
The present invention has been made in view of the above circumstances, and reduces stress generated in a connection portion between a circuit board, a signal cable, and a solid-state imaging device, and prevents contact failure and disconnection at these connection portions. It is an object to provide an endoscope that can be used.
[0006]
[Means for Solving the Problems]
An endoscope according to the present invention includes a solid-state imaging device that captures an image of a region to be observed, an element frame that is a frame that holds the solid-state imaging device, and a circuit board that constitutes a circuit that drives the solid-state imaging device. A shield frame that is connected to the element frame and protects the circuit board, and at least a part of the shield frame is disposed in the shield frame and extends toward the base end side from the shield frame. A signal cable for transmitting an image signal of a captured image, and the shield In the frame In order to define the extension angle of the signal cable that is integrally formed and extends toward the base end side of the shield frame and extends from the shield frame, a predetermined direction is provided toward the central axis of the shield frame. A tongue piece inclined at an angle is provided, and the signal cable is fixed to the tongue piece.
[0007]
In the endoscope of the present invention, By fixing the signal cable to the tongue provided on the shield frame, the protruding direction of the signal cable can be fixed. , Reduce the stress generated in the connection between circuit boards, signal cables and solid-state image sensors can do .
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
(First embodiment)
1 to 3 relate to a first embodiment of the present invention. FIG. 1 is a configuration diagram of an electronic endoscope ((A) is a main body of the electronic endoscope, (B) is an external connection device), FIG. 2 is an explanatory diagram including a partial cross-sectional view illustrating the configuration of the tip portion, and FIG. However, a portion filled with a circle (◯) or a triangle (Δ) in FIG. 2 indicates that an adhesive or the like is filled.
[0010]
As shown in FIG. 1, an electronic endoscope 1 includes an elongated insertion portion 2 that is inserted into a site to be observed, an operation portion 3 that also serves as a gripping portion that is connected to the proximal end portion of the insertion portion 2, and the operation portion. 3 is mainly composed of a universal cord 4 having a built-in signal cable, a light guide and the like extending from the side portion 3, a connector portion 5 provided at an end portion of the universal cord 4, and the like.
[0011]
The electronic endoscope 1 is detachably connected to an external light source device 6 and a video processor 7 via a connector unit 5 so that an observation image can be displayed on a monitor 8 or the like.
[0012]
The video processor 7 can be connected to a VTR deck, a video printer, a video disk, an image file recording device, etc. (not shown).
[0013]
The insertion portion 2 is configured by connecting a distal end portion 9 located at the distal end of the insertion portion 2, a bending portion 10 that can be bent at a desired angle, and a flexible flexible tube portion 11.
[0014]
The operation unit 3 includes a remote switch 12 for instructing operations such as freeze, release, VTR recording, and printer output of an observation image, an air / water feed button 13 for performing air / water feeding operations, and a suction button for performing suction operations 14, a bending operation knob 15 for performing a bending operation of the bending portion 10 is provided.
[0015]
A light guide end 16 for detachably connecting to the light source device 6 protrudes from the tip of the connector 5, and a connection cord 18 extending from the video processor 7 is attached to and detached from the side. An electrical connector 17 for freely connecting is provided. In addition, the connector section 5 is provided with a pressurizing pipe 19, a water supply pipe 20, and a suction base 21, and is connected to a fluid control device and a suction device (not shown).
[0016]
As shown in FIG. 2, the distal end portion 9 includes a distal end portion main body 22 formed in a substantially cylindrical shape with a metal such as stainless steel, and the distal end side outer periphery of the distal end portion main body 22 is formed of resin or the like. A tip cover 23 is attached.
[0017]
The distal end main body 22 is assembled with an objective optical system unit 24 and a light guide distal end portion and an illumination lens (not shown), a forceps channel (not shown), an air / water feed nozzle, and an air / water feed channel.
[0018]
On the other hand, the bending portion 10 has a configuration in which a plurality of bending pieces 25 formed in a cylindrical shape with metal or the like are rotatably connected to be bent. The distal end portion of the bending piece 25 located at the foremost end of the bending piece 25 is fitted to the rear end portion of the distal end portion main body 22. The outer periphery of the bending piece 25 is covered with a member having high thermal conductivity such as a blade 26 made of a metal net tube or the like, and a bending rubber 27 formed of rubber containing metal powder or the like. The distal end portion of the curved rubber 27 is fixed to the distal end portion main body 22 by a thread winding portion 28.
[0019]
A stepped through hole 29 is formed in the distal end body 22, and the objective optical system unit 24 is fixed to the stepped through hole 29.
[0020]
A front lens group 36 including a cover glass 32 is attached to a first lens frame 31 that is a frame body constituting the objective optical system unit 24. The rear end portion of the first lens frame 31 extends rearward from the front group lens 36, and an insulating member 35 is fitted on the inner periphery of the extended portion, and the rear group lens is disposed inside the insulating member 35. A front end portion of the frame 37 is inserted. Thereby, the rear group lens frame 37 and the rear member connected to the rear group lens frame 37 are insulated from the tip end body 22.
[0021]
The first lens frame 31 and the rear group lens frame 37 are arranged coaxially. The rear group lens frame 37 includes a rear group lens 38 including a laser cut filter 33, an infrared cut filter 34, and the like. Is installed.
[0022]
A plurality of flare stops 42 for preventing flare and ghost are provided inside the first lens frame 31 and the rear group lens frame 37, and a brightness stop 43 is provided in the front group lens 36. Is provided.
[0023]
The objective optical system unit 24 is integrally formed, and is fitted into the stepped through hole 29 from the rear of the tip end body 22 and attached. A fixing groove 57 having a V-shaped cross section is formed on the outer peripheral surface of the first lens frame 31, and a fixing screw 58 that is screwed into a portion of the opposing front end portion main body 22 is screwed in the radial direction to contact the fixing groove 57. Thus, the tip body 22 and the objective optical system unit 24 are fixed.
[0024]
The objective optical system unit 24 has a solid-state image sensor 59. The solid-state imaging element 59 and the protective lens 61 disposed in front of the solid-state imaging element 59 are fitted and fixed to the inner periphery of the element frame 62. The element frame 62 is externally fitted to the rear group lens frame 37, and is fixed with an adhesive after performing position adjustment such as focus adjustment.
[0025]
A distal end portion of a shield frame 64 which is formed in a cylindrical shape and whose outer periphery is covered with an insulating cover 63 is externally fitted and fixed to the outer periphery on the proximal end side of the element frame 62.
[0026]
The base end side of the shield frame 64 extends rearward from the solid-state image sensor 59, and a circuit board 60 formed of ceramic or the like is located behind the solid-state image sensor 59 in the rearwardly extending portion. It is held substantially parallel to the optical axis of the objective optical system unit 24.
[0027]
An external lead land is formed on the front end side of the circuit board 60 to be connected to the external lead 65 of the solid-state image sensor 59 by soldering or the like. The circuit board 60 is soldered to the external lead 65 of the solid-state image sensor 59. Etc. are connected.
[0028]
Further, on the base end side of the circuit board 60, a signal line connection land connected to the signal cable 68 constituted by the plurality of coaxial lines 66 and simple lines 67 by soldering or the like is formed. Is connected to a signal cable 68.
[0029]
An IC 69 sealed with a sealing resin is electrically connected and wired on the circuit board 60, and a circuit for driving the solid-state imaging device 59 between the circuit board 60, the IC 69, and the signal cable 68. Is formed.
[0030]
The signal cable 68 is connected to an external lead 65 extending rearward from the solid-state image sensor 59 or a signal line connection land on the circuit board 60 by soldering or the like, and a signal or the like for driving the solid-state image sensor 59 is a signal. It is transmitted by a cable 68.
[0031]
A solid-state image sensor driving signal for driving the solid-state image sensor 59, a solid-state image sensor driving power source, and the like are transmitted via the circuit board 60. In addition, an image signal output from the solid-state imaging device 59 is transmitted to the base end side by the signal cable 68 via the circuit board 60.
[0032]
The outer periphery of the signal cable 68 extending rearward from the circuit board 60 reduces damage from or damage to other built-in objects arranged in the electronic endoscope 1. It is covered with a cable protection member 72.
[0033]
The vicinity of the tip of the cable protection member 72 is wound around the thread 46 and tightened to the signal cable 68, and the cable protection member 72 is bonded and fixed so as not to be displaced from the signal cable 68.
[0034]
As shown in FIG. 3, the rear end side of the shield frame 64 has a tongue on an adjacent side. Fragment 44 and 45 are formed and extend rearward from the shield frame 64. In this embodiment, the tongue Fragment 45 is formed to be inclined by an angle θ in the upward direction in FIG. 3 with respect to the optical axis.
[0035]
The cable protection member 72 that covers the signal cable 68 is a tongue of the shield frame 64. Fragment 44 and 45 and fixed with an adhesive or the like.
[0036]
In this embodiment, the tongue Fragment Is formed on two sides Have However, any number may be formed anywhere on one side or four sides. Also tilted tongue Fragment There is no need for it, and the tongue is tilted Fragment Two or more may be formed.
[0037]
On the other hand, as shown in FIG. 2, the inside of the shield frame 64 is filled with, for example, a non-conductive filler 70 (portion filled with a circle in FIG. 2), and the solid-state image sensor 59, The circuit board 60, the IC 69, and the signal cable 68 are sealed.
[0038]
In addition, the rear end portion of the insulating cover 63 is filled with a non-conductive adhesive 71 (a portion filled with a triangle mark in FIG. 2), and the tongue Fragment The signal cable 68 is firmly fixed in the protruding direction formed by 44 and 45.
[0039]
In the present embodiment, the cable protection member 72 is a tongue Fragment 44, 45 inside but tongue Fragment It is also possible to cover the signal cable 68 from the outside of 44 and 45 and firmly fix it from the outside of the signal cable 68 with a thread or the like.
[0040]
The operation and effect of the above configuration described with reference to FIGS. 1 to 3 will be described below.
[0041]
In the present embodiment, the cable protection member 72 that is covered and fixed to the outer periphery of the signal cable 68 that transmits the image signal is fixed to the shield frame 64. The shield frame 64 is fixed to the element frame 62.
[0042]
Thereby, the stress which arises in the connection part between the circuit board 60, the signal cable 68, and the solid-state image sensor 59 is reduced, and the contact failure and disconnection in these connection parts can be prevented.
[0043]
In the present embodiment, the tongue sides 44 and 45 are formed on the shield frame 64, and the cable protection member 72 covered on the outer periphery of the signal cable 68 is fixed to the tongue sides 44 and 45.
[0044]
Thereby, the protruding direction of the signal cable 68 covered with the cable protection member 72 can be fixed, and interference between the other built-in objects in the electronic endoscope 1 and the signal cable 68 can be reduced.
[0045]
Further, in the present embodiment, the tongue side 45 is formed with an inclination angle θ with respect to the optical axis.
[0046]
Thereby, the cable protection member 72 can be extended in a direction that avoids interference with other built-in components such as the light guide, etc. of the electronic endoscope 1, and the insertion portion 2 can be reduced in diameter.
[0047]
By the way, the description about a structure and operation | movement of remote switch 12 grade | etc., With which the operation part 3 of the electronic endoscope 1 was equipped is supplemented below. In addition, the structure and operation | movement of the site | part which are not described in the following description are the same as the structure and operation | movement of the site | part demonstrated using FIG. 1 thru | or FIG.
[0048]
An example of the configuration of the operation unit 3 in which the remote switch 12 is disposed will be described with reference to FIG.
[0049]
FIG. 4 is an explanatory diagram for explaining the configuration of the operation unit in the vicinity of the remote switch 12 ((A), (B), and (C) are views of the operation unit viewed from different directions).
[0050]
As shown in FIG. 4, the universal cord 4 extending from the operation unit 3 is accommodated in a convex portion 47 formed in the operation unit 3 in the operation unit 3.
[0051]
The convex portion 47 is formed in a smooth R shape so that the degree of freedom of the finger is increased when each SW of the remote switch 12 is operated.
[0052]
In addition, a substantially conical elastic member 48 for preventing the universal cord 4 from being bent suddenly is provided at a connection portion between the operation unit 3 and the universal cord 4.
[0053]
The connecting portion between the elastic member 48 and the convex portion 47 is also formed in a smooth shape with no step.
[0054]
In the configuration described with reference to FIG. 4, the surface shape of the member disposed on the side gripped by the hand of the operation unit 3 is formed smoothly, and the surface shape of the connection portion between the members also has a step. There is no smooth shape.
[0055]
Thereby, the freedom degree of the finger at the time of grasping the operation unit 3 is expanded, and the operability of the switch operation such as the remote switch 12 provided in the operation unit 3 is improved.
[0056]
An example of the operation of the remote switch 12 will be described with reference to FIG.
[0057]
FIG. 5 is a flowchart for explaining the operation of the remote switch 12. The remote switch 12 described with reference to FIG. 5 includes four switches SW1, SW2, SW3, and SW4.
[0058]
As shown in FIG. 5, the functions assigned to the switches SW1, SW2, and SW3 are switched when the switch SW4 is pressed, that is, when it is ON, and when it is not pressed, that is, when it is OFF.
[0059]
When the switch SW4 is OFF, the switch SW1 is assigned to the freeze function, the switch SW2 is assigned to the photometry switching function, and the switch SW3 is assigned to the enlargement switching function.
[0060]
When the switch SW4 is in the ON state, the switch SW1 is assigned to the release function, the switch SW2 is assigned to the printer output function, and the switch SW3 is assigned to the function for controlling the start and stop of the VTR.
[0061]
In the electronic endoscope 1 having the remote switch 12 whose operation has been described with reference to FIG. 5, the functions of the other switches are switched depending on the state of one of the plurality of switches constituting the remote switch 12. Therefore, more functions than the number of switches can be assigned to the remote switch 12, and the cost of the switch can be reduced. For example, in the example described with reference to FIG. 5, six functions are assigned to the four switches SW1, SW2, SW3, and SW4. In this case, the cost can be reduced by two switches.
[0062]
Further, the number of switches constituting the remote switch 12 is not limited to four and may be any number of two or more. For example, when the remote switch 12 is composed of three switches, four functions can be assigned. In this case, the cost for one switch can be reduced.
[0063]
In addition, the switches described with reference to FIG. 5 may be assigned switches other than the portion where the remote switch 12 of the operation unit 3 is disposed.
[0064]
Further, the switch described with reference to FIG. 5 is not limited to the case where the functions shown in FIG. 5 are allocated and used, and other functions may be allocated and used in accordance with the purpose of use and the operability of the user. Good.
[0065]
An example of the configuration and operation of the remote switch 12 different from the above will be described with reference to FIGS.
[0066]
FIG. 6 is a flowchart for explaining the operation of the remote switch 12, and FIG. 7 is an example of a monitor screen for displaying the state of the remote switch 12.
[0067]
The remote switch 12 described with reference to FIGS. 6 to 7 is composed of two switches SW1 and SW2.
[0068]
As shown in FIG. 6, every time the switch SW2 is pressed, that is, every time the SW2 is turned on, the function assigned to the switch SW1 is switched.
[0069]
In the example shown in FIG. 6, every time the switch SW2 is pressed, the function assigned to the switch SW1 is switched in the order of freeze function → release function → VTR recording function → printer output function → freeze function. Yes.
[0070]
For example, when the switch SW2 is pressed three times and then the switch SW1 is pressed, that is, turned on, the printer output function is executed.
[0071]
At this time, the function assigned to the switch SW1 by the switch SW2 is displayed on the screen of the monitor 8.
[0072]
In the electronic endoscope 1 having the remote switch 12 whose operation has been described with reference to FIGS. 6 to 7, every time one switch SW2 of the two switches constituting the remote switch 12 is pressed, another switch SW1. Therefore, more functions than the number of switches can be allocated to the remote switch 12, and the cost of the switch can be reduced. For example, in the example described with reference to FIGS. 6 to 7, four functions are assigned to the two switches SW1 and SW2. In this case, the cost can be reduced by two switches.
[0073]
Further, the number of functions that can be assigned to the switch SW1 by the switch SW2 is not limited to four. For example, five functions may be switched. In this case, the cost can be reduced by three switches.
[0074]
Further, the number of switches is not limited to two and may be three or more. For example, in the case of three switches, every time one switch is pressed, for example, four functions assigned to the other two switches may be switched. In this case, the cost can be reduced by 5 switches.
[0075]
In addition, in the electronic endoscope 1 having the remote switch 12 whose operation has been described with reference to FIGS. 6 to 7, the function currently assigned to the switch SW1 by the switch SW2 is displayed on the monitor 8 and is always displayed during observation. The function assigned to the switch SW1 can be confirmed.
[0076]
An example of the configuration of the remote switch 12 different from the above will be described with reference to FIG.
[0077]
FIG. 8 is an explanatory view for explaining the configuration of the operation unit near the remote switch ((A) and (B) are views of the operation unit viewed from different directions, respectively).
[0078]
In addition to the push button switch SW1, the remote switch 12 includes a switching lever 49 disposed in the operation unit 3 as shown in FIG.
[0079]
The switching lever 49 is configured to rotate about the rotation axis of the bending operation knob 15.
[0080]
The switching lever 49 can be switched in four stages in the example shown in FIG. 8, for example.
[0081]
When the switching lever 49 is switched, an index 52 such as “1”, “2”, “3”, “4” is written on the surface of the operation unit 3 in the vicinity of the position where the switching lever 49 is located.
[0082]
Here, for example, when the switching lever 49 is positioned in the vicinity of the index “1”, a freeze function is assigned to the switch SW1. In this case, a printer output function is assigned, and in the case of “4”, a VTR recording function is assigned.
[0083]
Here, for example, when the switching lever 49 is positioned in the vicinity of the index “3” and the switch SW1 is pressed, the printer output function is executed.
[0084]
Note that the number of stages to be switched by the switching lever 49 is not limited to four, and may be any number.
[0085]
The type of function assigned to the switch SW1 by the switching lever 49 is not limited to the above function, and any function may be assigned according to the purpose of use or the operability of the user.
[0086]
Further, the state of the function assigned to the switch SW1 by the switching lever 49 may be displayed on the monitor 8 as shown in FIG.
[0087]
Further, the number of switches other than the switching lever 49 is not limited to one, and may be two or more.
[0088]
Further, the switching lever 49 may be rearranged into a slide type switch that can switch between two or more states.
[0089]
In the electronic endoscope 1 having the remote switch 12 whose operation has been described with reference to FIG. 8, the function currently assigned to the switch SW1 can be known by the feeling of operating the switching lever 49, and the operability is good. Further, the function assigned to the switch SW1 can be switched by a single operation on the switching lever 49, and the operability is good.
[0090]
An example of the configuration of a remote switch different from the remote switch 12 will be described with reference to FIGS.
[0091]
FIG. 9 is a cross-sectional view illustrating the configuration of the connection portion between the operation unit and the insertion unit, and FIG. 10 is a block diagram illustrating the configuration for detecting the remote switch.
[0092]
As shown in FIG. 9, the flexible tube portion 11 includes a single or triple hoop material 53 from the inside, a mesh tube 54 formed of metal, and an exterior tube 55 formed of resin such as polyurethane.
[0093]
A rear base 56 is fitted on the rear end side of the flexible tube portion 11 and is fixedly bonded.
[0094]
A heat-shrinkable tube 73 is covered and fixed on the outer periphery of the rear base 56 across the rear base 56 and the flexible tube portion 11.
[0095]
A connecting tube 74 extending from the operation unit 3 is externally fitted to the rear base 56 and fixed by a fixing ring 75.
[0096]
A connection portion between the operation portion 3 and the flexible tube portion 11 is provided with a substantially conical elastic member 50 for covering the connecting tube 74 to prevent the flexible tube portion 11 from being bent suddenly. ing. An elastic cover 51 is provided so as to cover the outer periphery of the elastic member 50.
[0097]
The elastic member 50 incorporates a ring-shaped pressure sensor 76, and outputs an electrical signal when a pressure higher than a preset pressure is sensed.
[0098]
As shown in FIG. 10, the electrical signal output from the pressure sensor 76 is input to a pressure detection circuit 78 provided in the video processor 7 so as to detect that a pressure higher than a preset pressure is applied. It has become.
[0099]
Here, when a pressure is applied to the pressure sensor 76, the video processor 7 is configured so that a frequently used function, for example, a freeze function is activated. The freeze function can be activated by, for example, an operator applying or bending a gripping force at a location where the pressure sensor 76 is disposed. That is, the pressure sensor 76 can be used as a remote switch.
[0100]
The function operated by the pressure sensor 76 is not limited to the freeze function, and any other function may be assigned.
[0101]
In addition, when the flexible tube portion 11 is largely bent, a message for alerting that there is a risk of damaging the electronic endoscope 1 may be displayed on the monitor 8.
[0102]
The pressure sensor 76 is not limited to the pressure sensor, and may be rearranged to one that mechanically detects bending or pressing and outputs an electrical signal by a switch or the like.
[0103]
In the electronic endoscope 1 having a remote switch, the configuration of which has been described with reference to FIGS. 9 to 10, for example, the operator holds the insertion portion 2 with one hand and operates the bending operation knob 15 with the other hand. When inserting the insertion part 2 into the observation site, for example, a freeze function can be activated by bending the elastic member 50 using both hands, without having to change the operation part 3 for switch operation. It is possible to shoot a subject with good operability.
[0104]
The present invention is not limited to the configuration and operation described in the embodiment of the invention, and various modifications can be made without departing from the scope of the invention.
[0105]
For example, the electronic endoscope 1 is not limited to the direct view type as shown in the configuration of the distal end portion 9 in FIG. 3, but may be a side view type or a front perspective type. It may be a rear perspective type.
[0106]
[Appendix]
(1) a solid-state image sensor that captures an image of a site to be observed;
An element frame that is a frame for holding the solid-state imaging element;
A circuit board constituting a circuit for driving the solid-state imaging device;
A shield frame connected to the element frame and protecting the circuit board;
A signal cable for transmitting an image signal of an image captured by the solid-state imaging device;
An endoscope having
The signal cable is fixed to the shield frame
Endoscope characterized by.
[0107]
(2) providing at least one tongue piece on the shield frame;
The signal cable is fixed to the tongue
The endoscope according to appendix (1), characterized by:
[0108]
(3) The tongue has an inclined portion inclined with respect to the optical axis,
The signal cable is fixed to the inclined portion.
The endoscope according to appendix (1) or appendix (2), characterized by:
[0109]
【The invention's effect】
As described above, according to the present invention, the signal cable can be fixed in the protruding direction by fixing the signal cable to the tongue provided on the shield frame. The stress generated in the connection portion between the circuit board, the signal cable, and the solid-state imaging device can be reduced, and contact failure and disconnection at these connection portions can be prevented.
[Brief description of the drawings]
FIGS. 1 to 3 relate to a first embodiment of the present invention, FIG. 1 is a configuration diagram of an electronic endoscope ((A) is a main body of the electronic endoscope, and (B) is an external connection) Equipment)
FIG. 2 is an explanatory diagram including a partial cross-sectional view illustrating a configuration of a tip portion.
FIG. 3 is an explanatory diagram for explaining a configuration of a connection portion between an objective optical system unit and a signal cable.
FIGS. 4A and 4B are explanatory diagrams for explaining the configuration of the operation unit in the vicinity of the remote switch.
FIG. 5 is a flowchart for explaining the operation of the remote switch.
FIG. 6 is a flowchart for explaining the operation of the remote switch.
FIG. 7 shows an example of a monitor screen that displays the status of the remote switch.
FIGS. 8A and 8B are explanatory diagrams for explaining the configuration of the operation unit in the vicinity of the remote switch ((A) and (B) are views of the operation unit viewed from different directions);
FIG. 9 is a cross-sectional view illustrating a configuration of a connection portion between an operation unit and an insertion unit
FIG. 10 is a block diagram illustrating a configuration for detecting a remote switch.
[Explanation of symbols]
1 ... Electronic endoscope
2 ... Insertion section
3. Operation unit
4 ... Universal code
5 ... Connector part
6 ... Light source device
7 ... Video processor
8 ... Monitor
9 ... Tip
10: Curved part
11 ... Flexible tube
12 ... Remote switch
13 ... Air / Water button
14 ... Suction button
15 ... Bending operation knob
16 ... Light guide end
17 ... Electric connector
18 ... Connection cord
19 ... Pressure tube
20 ... Air pipe
21 ... Suction cap
22 ... tip body
23. Tip cover
24 ... Objective optical system unit
25 ... Curving piece
26 ... Blade
27 ... curved rubber
28 ... winding thread
29 ... Stepped through hole
31 ... 1st lens frame
32 ... Cover glass
33 ... Laser cut filter
34 ... Infrared cut filter
35. Insulating member
36. Front lens group
37 ... Rear lens group frame
38 ... Rear lens group
42 ... Flare stop
43 ... Brightness stop
44 ... Tongue
45 ... Tongue
46 ... Thread
47 ... convex
48. Elastic member
49 ... Switching lever
50. Elastic member
51. Elastic cover
52 ... Indicator
53 ... Hoop material
54 ... Mesh tube
55 ... Exterior tube
56 ... Rear base
57 ... Fixing groove
58 ... Fixing screw
59 ... Solid-state imaging device
60 ... Circuit board
61 ... Protective lens
62 ... Element frame
63 ... Insulation cover
64 ... Shield frame
65 ... External lead
66 ... Coaxial line
67 ... Simple line
68 ... Signal cable
69 ... IC
70 ... Filler
71 ... Adhesive
72. Cable protection member
73 ... Heat shrinkable tube
74 ... Connecting pipe
75 ... Fixing ring
76 ... Pressure sensor

Claims (1)

A solid-state imaging device that captures an image of a site to be observed;
An element frame that is a frame for holding the solid-state imaging element;
A circuit board constituting a circuit for driving the solid-state imaging device;
A shield frame connected to the element frame and protecting the circuit board;
A signal cable that is disposed in the shield frame and extends toward the base end side from the shield frame, and transmits an image signal of an image captured by the solid-state imaging device;
With
In order to define the extension angle of the signal cable that is integrally formed with the shield frame and extends toward the base end side of the shield frame and extends from the shield frame. An endoscope, wherein a tongue piece inclined at a predetermined angle is provided and the signal cable is fixed to the tongue piece.

Images