JP2003102673A - Endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope by which a treating tool having the endoscope put there-through is guided surely to a desired site. SOLUTION: At a position on a side where an observation optical system is arranged on the guiding surface 29 of a treating tool standing up table 27 arranged within a housing 25 opening at the tip of an insertion part where the observation optical system of the endoscope 1, a projection part 45 projecting is formed at the edge of the guiding surface 29 to guide the treatment tool standing up deviated to the side of the observation optical system to the guiding surface 29 of the standing-up table.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention
The leading direction of the treatment channel is
The present invention relates to an endoscope provided with a raising table for regulation. 2. Description of the Related Art An end of a channel is opened at an end of an insertion portion.
And an elevator is provided in this opening, and the processing is performed by the elevator.
Endoscopes that regulate the direction in which the fixture is led out are known
(JP-A-8-154890). [0003] Japanese Patent Application Laid-Open No. Hei 8-154
The endoscope disclosed in Japanese Patent No. 890 is a treatment tool inserted through a channel.
When the treatment tool is protruded from the distal end of the insertion section of the endoscope,
The wall of the tip component that is in contact with the side of the
It is easy to be held so that it is sandwiched between the sides of the upper stand, and the treatment tool rises
There is a case where the operation is performed without standing along the guide groove of the table.
Then, when the treatment tool is raised to a certain angle,
The so-called jump of the treatment tool which falls into the groove occurs. this
Such a phenomenon may occur. In this case, endoscopy
It is difficult to guide the treatment tool to the target site during
Cause obstacles. [0004] The present invention has been made in view of the above circumstances
The purpose is to use a treatment tool inserted through the endoscope.
Can be reliably guided from the tip of the insertion section to the target site.
It is an object of the present invention to provide an endoscope. SUMMARY OF THE INVENTION [0005] The present invention relates to an endoscope observation system.
Opened at the tip of the insertion section where the optical system is located
Provided on the accommodation room for the treatment instrument raising table and on the operation unit side of the endoscope
And the insertion port through which the treatment tool is inserted and the inside of the endoscope.
A treatment tool formed and communicating the accommodation chamber and the insertion port
Guide path and the storage room are provided so as to be able to be raised.
A treatment tool raising table having a guide surface for guiding the device,
Position the guide riser on the side where the observation optical system is located on the guide surface.
The treatment instrument is formed so as to protrude from the ridge to be placed.
And a protrusion for guiding to the conductive surface.
Endoscope. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
An embodiment will be described. FIG. 1 shows a first embodiment of the present invention.
Of the system incorporating the endoscope 1 and various external devices.
It is a perspective view showing the whole. As an external device, a light source device
2, image processing device 3, monitor 4, input keyboard 5,
There are devices such as a suction pump device 6, a suction bottle 7, etc.
The equipment is installed on a shelf 9 with a carrier 8. The endoscope 1 includes an insertion section 12, an operation section 13,
A universal cord 14 is provided. The insertion part 12 is a flexible tube
From each component of the portion 15, the bending portion 16, and the tip portion 17
Become. The operation unit 13 has a universal cord 14
One end is connected, and the other end of the universal cord 14 is
A connector 18 is provided. The connector 18 is external
It is connected to a light source device 2 which is one of the devices. Connector 1
8 is provided with a light guide tube and an electric contact portion. FIGS. 2 to 1 show the structure of the tip portion 17. FIG.
This will be described in detail with reference to FIG. The tip 17 is in contact with the tip body.
Tip hard portion 21 and a resin
And a tip cover 22 made of a non-conductive material such as
The tip cover 22 is attached to the tip hard portion 21 by bonding or the like.
Fixed. The distal end hard portion 21 has a guide path for inserting a treatment instrument.
Channel (insertion hole) 23 and is formed continuously.
An introduction guideway 24 that guides the introduction of the treatment tool etc. to the distal end side is shaped.
Has been established. The leading end of the introduction guide path 24 has a hard tip.
A space formed by the material portion 21 and the tip cover 22.
An accommodation room 25 is provided. This accommodation room 25 is a treatment
The distal end opening of the tool insertion channel 23 is formed. The channel 2 is provided in the accommodation room 25.
Treatment tools 26 such as forceps and catheters introduced through
A treatment instrument raising table 27 for raising the patient to a desired position is provided.
Is being used. One end of the treatment instrument raising table 27 has a hard end portion.
21 and is pivotally connected to a fulcrum rotation fulcrum 28 provided at
I have. The elevating platform rotation fulcrum 28 is opened at the end of the introduction guide path 24.
It is located in the lower part of the mouth, and
So that the other end portion of the treatment instrument raising table 27 rotates.
The raising table 27 is attached so as to freely move up and down. Treatment tool
The elevator 27 is connected to the guideway 24 so as to be continuous.
The treatment instrument 26 is guided by the formed V-shaped groove.
A guiding surface 29 is formed. The guide surface 29 of the treatment instrument raising table 27 is formed.
Pivot on the back of the elevator 31
Near the distal end, near the left and right ends of the treatment instrument raising table 26,
Each is formed so as to project perpendicularly to the back surface 31 of the elevator.
A pair of left and right wire support walls 33 is provided.
The pair of left and right wire support walls 33 is provided with the treatment instrument raising table 27.
The tip of the raising wire 34 for raising
And are rotatably connected. A pair of left and right wire support walls
The part of the raising wire 34 located between 33
A stopping pipe 35 is provided. This pipe 35
It is fixed to the raising wire 34. The raising wire 34 is inserted through the insertion portion 12.
Is guided to the operation unit 13 through the guide pipe 36,
It is connected to the raising operation mechanism described below. The front cover 22 has a back surface 31 of the elevator.
At the position opposite to
The slope portion 41 formed as a smooth slope toward
Is formed. FIG. 6A shows the slope portion 41.
And raising the brush for cleaning as shown in FIG.
Brush guide surface 4 which is a groove for guiding to back surface 31
2 may be formed. Fig. 6 (a) shows the slope
FIG. 6B is a perspective view of the slope portion 41, and FIG.
FIG. 6A is a cross-sectional view along the X plane shown in FIG. The back surface 31 of the raising table 27 of the treatment tool raising table 27 is shown in FIG.
As shown by 2, when the treatment instrument raising table 27 is raised up to the maximum
, Except for the wire support wall 33,
12 with respect to the longitudinal direction of the tip 17 is about 90
Degrees (or in the range of 80 to 100 degrees)
You. The lower end of the wire support wall 33 is provided with a treatment tool.
When the elevator 27 is raised up to the maximum, the tip cover
22 is formed so as to be deviated upward from the end of the opening.
(Instructed at the distance C in FIG. 2). In the accommodation room 25, the treatment instrument raising table 27 is
From the back surface 31 of the erecting platform when raised up to the maximum,
The distance A to the surface of the tip cover 22 facing the back surface 31 is
It is formed so as to be maximum at the upper open end of the accommodation chamber 25.
(See FIG. 2). That is, it is constituted by the accommodation room 25.
In a space perpendicular to the back surface of the treatment instrument raising table 27
Is configured such that the cross-sectional area becomes maximum at the open end. As shown by a dotted line in FIG.
One side of the accommodation room 25 with the elevator 27 laid down
The surface facing the back surface 31 of the elevator is a pivot support for the elevator.
Formed as a slope that slopes towards point 28
This is the slope section 41. When the treatment instrument raising table 27 is raised up to the maximum,
And the surface of the storage room 25 facing the elevator back surface 31 is inserted.
Formed at about 90 degrees to the longitudinal direction of the tip 17 of the part 12
However, this surface and the treatment instrument raising table 27 are laid down.
When it is set to the
The connection is made at the surface 44. In addition, each of the chambers 25 is formed.
Walls have curved surfaces at all tangents that touch each other
It is formed so that. The treatment instrument raising table 27 is raised up to the maximum.
At this time, the back surface of the treatment instrument raising table 27 and the back surface
The distance to the surface of the accommodation room 25 facing
It is formed to be short and narrow toward the pivot point.
You. FIG. 3 shows a cross-sectional shape of the treatment instrument raising table 27 (see FIG. 3).
2 BB section in FIG. 2), but guidance of the treatment instrument raising table 27
A surface side on which the surface 29 is formed;
On the side where the objective lens and illumination lens
The projecting portion 45 having a thin, spatula-like shape is
Is formed to protrude beyond the ridge of the slope to form
I have. The inner surface of the projecting portion 45 is inside the treatment instrument raising table 27.
A projection that is inclined toward the center and is a slope that is continuous with the guiding surface 29.
An exit guiding surface 46 is formed. The slope of the protrusion guiding surface 46
The distribution is formed larger and steeper than the gradient of the guide surface 29.
I have. The projecting portion guiding surface 46 is a slope.
Not formed by a convex or concave curved surface
It may be. As shown in FIG. 2, the ridge line of the projecting portion 45 is
In the state where the fixture raising stand 27 is raised up to the maximum, the tip 1
7 is formed in a shape that does not interfere with each component.
You. Further, as shown in FIG.
Indicates a locus indicated by a bold broken line when the treatment instrument raising table 27 is raised.
become that way. The trajectory of the top 48 is the ridgeline of the tip cover 22
Formed so that it comes closer to the inside of the lift base fulcrum 28 than the part 49
Has been established. On the other hand, as shown in FIG.
In the part 17, a piece of the accommodation chamber 25 is
Side, here on the right side, the illumination lens 51 and the objective lens
Are located in a line in front and back of the tip portion 17 in the longitudinal direction.
The endoscope 1 is disposed and constitutes a side-view type endoscope 1. Illumination lens for expanding and illuminating the body cavity with illumination light
A light guide (fiber bundle) 53 is connected to 51.
The objective lens 52 has a prism 54 and an imaging lens.
An imaging unit 56 is connected via 55. These yes
The displacement is also attached to the distal end hard portion 21. Imaging unit 5
Reference numeral 6 denotes an image pickup device such as a CCD (not shown) and an accessory circuit device.
It is embedded. Referring to FIGS. 7, 8, 9, 11 and 12, FIG.
As shown, a light guide 53 is arranged on the distal end hard portion 21.
Storage groove 57 is formed along the longitudinal direction of the distal end hard portion 21.
It is elongated. And the light guide 53
After being filled, a filler 58 such as RTV rubber is
After that, the opening of the storage groove 57 is covered with the LG cover.
-59. Further, as shown in FIG.
At the end side to which the first bending portion 16 is connected, the outer skin of the bending portion 16
A thin ring-shaped member is provided at the position where the end of the member 61 is disposed.
Is fixed by bonding or the like. all
In the circumference, one end of the ring member 62 has a tip cover 2
2 is fitted, and the outer fitting part is bonded.
Agents and the like are arranged in a liquid-tight manner. The ring member 62 is shown in FIG.
As shown, the rear end of the tip cover 22 extends all around.
Even if it is constituted as the extension portion 63 formed by
good. The outer skin member 61 has an inner peripheral surface which is the ring member 6.
2 (or the extension 63) so as to be in close contact with the outer periphery thereof.
The outer periphery of the outer skin member 61 is thread-like
The member 64 is wound, and the adhesive 6
5 is applied, the foreskin member 66 is heated and melted and arranged.
Have been. Here, the inner diameter of the outer skin member 61
Of the outer diameter of the ring member 62 (or the extension portion 63).
It is formed so as to be 90% or less. FIG. 1 to be described later
The same applies to the configuration of FIG.
To the distal end rigid portion 21 and the flexible tube cap 85 described later.
The inner diameter of the area to be attached is the tip hard portion 21 and the flexible tube cap 8.
5 is formed so as to be 90% or less of the outer diameter. Also,
The inner diameter of the outer portion of the outer surface of the curved portion 16 of the outer cover member 61 may vary.
Formed so as to be 90 to 110% of the outer diameter of the cable 67.
ing. Here, the outer skin member 61 is attached to the distal end hard portion 21.
Reduce the inside diameter of the area to be mounted, and keep the same
It may be formed with an inner diameter. At that time,
The outer diameter of the flexible pipe base 85 is (outside of the flexible pipe base 85).
Diameter) × 0.9 ≧ (Inner diameter of outer skin member 61)
It is formed like one. The light guide 53 is inserted
In the section 12, the operation section 13 and the universal cord 14,
Through this, it is led to the connector 18. Connected to the imaging unit 56
The electrical wiring (not shown) is also inserted into the
And the connector 18 through the universal cord 14
Be guided. Electrical wiring is connected to the electrical contact of connector 18
Connected to the image processing apparatus 3 via the connection cable 19
It is. Then, the imaging signal obtained by the imaging unit 56 is converted into an image processing device.
So that it is converted to a video signal by the device 3 and displayed on the monitor 4.
Has become. On the other hand, as shown in FIG.
13 has a curved portion 16 of the insertion portion 12 in the up / down / left / right direction.
Of the bending operation unit 71 and the objective lens 52 for bending
Spraying a fluid such as water or air onto the outer surface
Gas and liquid are selectively ejected to the nozzle 72 for cleaning.
The water supply button 73 for opening, the tip is opened to the tip part 17
Mucus and the like in the body cavity selectively through the channel 23
Suction operation button 74 for collection, channel 2
An insertion port 75 leading to 3 is provided. In addition,
The distal end opening of the channel 23 is provided with a treatment instrument raising table 27.
Also serves as a storage room 25. A fluid is supplied to the nozzle 72 inside the endoscope 1.
Supply fluid line 76 and suction line through which recovered fluid passes
(The channel 23 also serves as this.)
I have. The bending portion 16 of the insertion portion 12 is, for example, as shown in FIG.
It is also configured as shown in FIG. In other words, multiple
A number of curved pieces 81 are rotatably assembled using rivets 82.
The core 83 is combined to form the core 83.
A metal or chemical fiber wire is braided on the outer periphery to form a cylinder.
The blade 67 thus formed is exteriorized, and the blade 6
7 are provided at both ends of the bending portion 16.
It is fixed to the mask 81 by bonding or soldering. Bray
The outer skin member 61 composed of a tube body is externally
Have been. State-of-the-art bending piece 8 constituting bending section 16
1 is made of a metal or hard resin constituting the tip portion 17.
Is connected. In addition, the tip hard portion 21
Is a cap-shaped part made of an insulating material
The tip cover 22, which is a material, is integrally fixed by bonding or the like.
You. The flexible tube 15 of the insertion section 12 has a belt-like shape.
Spiral tube (not shown) made of metal in a spiral shape, metal
Braid (not shown) formed by braiding wire or chemical fiber into a cylindrical shape
(Not shown) made of resin and resin.
Have been. The distal end of the flexible tube 15 can be made of metal or the like.
The flexible tube cap 85 is fixed by bonding or soldering,
A hand that constitutes the curved portion 16 via the flexible tube cap 85
A curved piece 81 at the side end is connected and fixed. As shown in FIG.
As described above, one end of the flexible tube base 85 and the
The gap between the outer layer and the outer layer is filled with an adhesive or the like.
The filler 84 is arranged in a liquid-tight manner over the entire circumference without any gap.
You. For example, the tip of the outer skin member 61 is
It is externally attached so as to be in close contact with the outer periphery of the
The end is arranged to be in contact with the rear end of the tip cover 22.
Have been. Then, as shown in FIG.
In the tip portion of the outer skin member 61 which covers 1, silk or
A thread member 86 made of chemical fiber or the like is wound. Outside
The rear end portion of the skin member 61 is in close contact with the outer periphery of the flexible tube cap 85.
The outer end of the flexible tube 15 is
It is arranged to be in contact with the tip of the layer. Flexible tube
At the rear end of the outer skin member 61 that covers the base 85,
Or a thread member 86 made of chemical fiber or the like is wound.
You. Then, it is wound around the end of the outer cover member 61.
The thread member 86 is a skin member when its tensile force is 2N or more.
Wrap and tighten 61 so as to bind it from the outside. Also,
The number of turns of the thread member 86 is four or more. In addition, yarn
An adhesive 87 is applied over the entire area of the member 86.
You. After applying the adhesive 87, the outer periphery of the thread member 86
A wrapping member 88 made of a thermoplastic resin such as urethane is provided.
You. Here, the adhesive 87 has a viscosity of 8.5P.
s · s or less. The melting point of the foreskin member 88 is the outer skin member
61 is made of a resin material having a melting point lower than the melting point of the resin.
You. In addition, less of the thread member 86 and the foreskin member 88
Both of the foreskin members 88 are similar in color to the appearance color of the flexible tube portion 15.
It becomes. The foreskin member 88 is not limited to the one similar in appearance color.
Instead, it may be black. The adhesive 87 is also used for the flexible tube portion 15.
Is similar in appearance color or black. The foreskin member 88 is phosphorus
May be formed in a belt-like form, or a belt-like sheet.
It may be formed in a shape. The wrapping member 88 is attached to the outer periphery of the adhesive 87.
When attaching, use a heat-shrinkable tubing material (not shown).
Is completely covered and heated by a heating device (not shown).
Heat shrinks the shrink tubing and melts at the same time as the assembly
Can be The foreskin member 88 is formed in a belt-like sheet shape.
Wrap the wrapping member 88 around the adhesive 87
A heater such as a soldering iron is used to attach a portion where the foreskin member 88 overlaps.
By heating with a container etc., arrange it in a ring shape at this part
To As shown in FIG. 16, the foreskin member 88
Is a black foreskin member 89 on the layer in contact with the thread member 86,
A transparent foreskin member 90 that is colorless (semi-transparent) in the exposed layer
May be constituted by two layers. As shown in FIG. 17 and FIG.
The first operating unit 13 is provided with an operating device for operating the treatment instrument raising table 27.
The elevator operating mechanism 91 for operating the upper wire 34
Built-in. That is, inside the operation unit 13,
The base end of the raising wire 34 is made of a hard rod-like material such as metal.
Wire fixing member 92 is integrally fixed with solder or the like.
Have been. The base end of the wire fixing member 92 is a recess.
A locking groove 93 is formed. This wire fixing part
In the base end portion of the material 92, the area where the locking groove 93 is formed is formed.
It is made of a hard block made of metal or the like that can be all inserted.
Link member 94 is inserted, and a link portion is provided in the locking groove 93.
Screw 9 screwed into a female screw 95 provided on the material 94
6 are inserted and locked. This allows the wire
The fixing member 92 is connected to a link member 94. The link member 94 serves as a base of the operation unit 13.
The base 97 is disposed so as to be able to advance and retreat in the longitudinal direction. Rin
The lock member 94 is provided adjacent to the bending operation section 71.
The arm 99 connected to the raising operation knob 98 is connected.
I have. The arm 99 is a rod-shaped shaft member for the link member 94.
Are rotatably connected by a link shaft 100. Re
At one end of the link shaft 100 which is not opposed to the base 97.
Is a locking member 101 composed of a C-type or E-type
Engaged. As shown, the locking member 101 is
The gripper cover 104 is larger than the end of the music operation unit cover 103
The length of the arm 99 is set so that it is located on the side
You. (Operation / Effect) Raise the treatment instrument raising table 27.
The operating knob 98 of the operating section 13 is rotated.
You. When the raising operation knob 98 is rotated, the raising
The treatment tool raising table 27 is raised accordingly.
It rotates about the upper table rotation fulcrum 28 as a fulcrum, and performs an undulating operation.
U. As shown in FIG. 2, the treatment instrument raising table 27 is
When raised up, the back of the raising base 31 and the point facing it
The empty space of the accommodation room 25 formed by one surface of the end cover 22.
The opening is the largest at the opening end, and the back of the elevator
31 is positioned substantially perpendicular to the longitudinal direction of the tip 17.
I do. For this reason, as shown in FIG.
The whole area inside the accommodation room 25 can be easily grasped with eyes from above.
Wear. The accommodation chamber 25 has the largest open end at the opening end.
The approach such as cleaning to the accommodation room 25
Easy. The walls forming the storage chamber 25 are in contact with each other.
Are formed to form curved surfaces at all tangents
It is. Therefore, there is no sharp corner in the accommodation room 25.
And it is difficult for dirt to collect. Further, as shown in FIG.
The lower end surface of the wire support wall 33 provided on the
-22 is located above the opening end surface by a distance C,
The lower end surface of the wire support wall 33 is viewed from the distal end side of the distal end portion 17.
Can be caught. On the lower end surface of the wire support wall 33
However, the approach is easier than the tip side. A brush guide surface 42 is provided on the surface of the slope portion 41.
If provided, the back of the elevator 31 with a cleaning brush or the like
When cleaning the slope 41, guide the brush to the target position.
Easy to guide. Therefore, the accommodation room 25 and the wire support wall 33
The lower end of the head has good cleaning properties.
The back of the treatment tool elevator 27 without removing it from the elevator 21
The surface 31 and each surface of the accommodation room 25 are easily cleaned to every corner.
Things become possible. Therefore, the trouble of attaching and detaching the tip cover, the inspection
There is no problem that the top cover sometimes shifts and blocks the field of view
It becomes. In addition, dirt accumulates in the corners of the accommodation room 25.
Also, the cleanability of the corners is improved. By the way, as shown in FIG.
5 is guided through the treatment tool guide channel 23.
The treatment instrument 26 passes through the guide surface 29 of the treatment instrument raising table 27,
The treatment tool 26 extends to the opening of the channel 23.
Is made of a resin such as PTFE,
The sheath portion of the treatment tool 26 tends to be bent. Ma
In addition, the distal end of the treatment instrument 26 is directed toward the center of the objective lens 52.
To make the sheath part bend aggressively.
Sometimes. In such a case, the leading end of the treatment instrument 26 is
Lighting of the distal end portion 17 without being located at the center of the treatment instrument raising table 27
It will face the lens 51 side. For example, as shown in FIG.
The distal end of the treatment tool 26 is
There is a case where the optical system is shifted toward the optical system housing area. This
In such a case, the treatment instrument raising table 27 is further raised.
The treatment tool 26 does not fit on the guide surface 29, and the treatment tool rises.
Lifted up between the base 27 and the member of the tip 17
Will be. However, a part of the treatment tool 26
The treatment tool is located in the guide surface 29 in the vicinity.
When the raising table 27 is lifted to a certain raising angle, the treatment tool 2
6 also fits so as to jump into the guide surface 29. this
The phenomenon will be referred to as a jump of the treatment tool 26. However, the tip of the treatment instrument raising table 27 here
Since the protruding portion 45 is formed on the side,
In the initial stage of the raising operation of 27 (the position where the raising angle is small)
A guide surface 29 that connects the distal end of the treatment tool 26 to the protrusion guide surface 46
Can be led to. As described above, the treatment tool fits on the guiding surface 29.
Easy to determine the position of the tip of the treatment tool during observation with an endoscope
And the inspection procedure is easy. In addition, the treatment instrument raising table 27
The formed protrusion 45 does not protrude from the tip cover 22
Therefore, there is no possibility that the mucous membrane of the patient is damaged by the protrusion 45.
No. Further, a protrusion guiding surface 46 is formed on the protrusion 45.
The treatment instrument 26 is guided by the projection guiding surface 46 and the guiding
It is easier to guide to the surface 29. Further, as shown in FIG.
Since the inclination of the protrusion guiding surface 46 is larger than the inclination,
No reduction in the width of the surface 29 with respect to the treatment instrument raising table 27
The height of the protrusion 45 can be made sufficiently high.
You. The protruding portion 45 extends the treatment instrument raising table 27 to the maximum.
Even when standing up to
Since it is formed so as not to contact, the treatment instrument raising table 27
A large stress is applied to the protruding portion 45 by the repeated raising operation.
Nothing to do. The most protruding top 48 of the protrusion 45 is
In any of the raising operations of the raising table 27, the tip cover is
-22 protruding from the most protruding ridge 49
Absent. The inner diameter of the outer shell member 61 is
Because it is 90% or less of the outer diameter of the hard tip portion 21,
The outer skin member 61 is provided outside the flexible tube base 85 and the distal end hard portion 21.
Adhere to the peripheral surface. Further, the thread-like member 8
6, the inner peripheral surface of the outer skin member 61 and the tip end are hardened.
The curved part 16 is formed on the outer peripheral surfaces of the part 21 and the flexible pipe base 85 by liquid.
Can be kept dense. The adhesive 87 arranged on the outer periphery of the thread member 86
Thus, the foreskin member 88 is bonded and fixed. Also, foreskin member
88 is heated and melted so that the end of the foreskin member 88 is smoothed.
Of the crab flexible tube portion 15, the tip cover 22, and the outer skin member 61
The outer periphery is formed so as to be continuously connected. When the foreskin member 88 is heated and melted,
Melted while the circumference is covered with a heat-shrinkable tube
It can be thermoformed into almost the same shape over the entire circumference
You. The foreskin member 88 is formed in a belt-like sheet form.
By doing so, in a plurality of models with different diameters of the flexible tube
Can also be handled by the same member. The wrapping member 88 is made of a resin of the outer skin of the flexible tube portion 15.
Since the melting point is lower than the melting point, the outer cover resin of the flexible tube portion 15 is damaged.
Only the foreskin member 88 can be melted without any trouble. Bonding
Since the agent 87 is a low-viscosity adhesive, the space between the thread members 86 is
It has good penetration into the space, and the entire lower layer of the foreskin member 88 is even.
It can be glued well. The foreskin member 88 is made of black or flexible tube 15.
Since the color is similar to the appearance, the appearance of the insertion section 12 of the endoscope is changed.
There is no damage. In the distal end hard portion 21, the light guide 5
The storage groove 57 for arranging 3 is covered with an LG cover 59.
However, usually, the edge of the LG cover 59 and the storage groove 5
There are not a few steps in the opening 7. However, in the above configuration, the ring member 62 (or
Or the extended contact portion 63) is arranged on the outer periphery of the distal end hard portion 21.
Formed by the LG cover 59 and the LG storage groove 57.
Stepped portion, and no unevenness in the mounting portion of the outer skin member 61
I can do it. Further, the ring member 62 is
The ring member 62
The space between the end cover 22 and the end cover 22 is liquid-tight. The outer skin member 61 is a ring member 62 (or
The contact member 63) is arranged so as to be in close contact therewith.
1 is between the ring member 62 and the outer skin member 61 and the extension contact portion 63
Are also liquid-tight. At both ends of the outer cover member 61, a thread-like member
Make the curved part 16 a liquid-tight structure only by winding 86
Can be. In addition, they do not have high skills,
The fixed portions at both ends of the leather member 61 can be formed smoothly.
You. The outer member is also used in the side-view type endoscope.
A liquid-tight structure by winding 61 with a thread-like member 86
Can be done. In addition, according to the configuration shown in FIG.
Wrapping due to chemical changes due to
Even if the skin member 88 is deteriorated, the physical
The outer skin member 61 and the extension portion 63 have a liquid-tight structure
Therefore, electrical insulation is provided at both ends of the outer cover member 61.
Sex can always be secured. Further, in the raising table operating mechanism 91,
The link shaft 100 is locked, and the link member 94 and the arm 99 are locked.
Locking member 1 as a component for rotatably connecting
01 is located at a position that does not face the base 97 and
Is disposed closer to the grip cover 104 than the end of the
Therefore, remove the grip cover 104 or use the endoscope.
Only by shifting to the flexible tube 15 side, the locking member 56
You can check and approach more easily. When the wire fixing member 92 is repeatedly used.
In the locking groove 93 located inside the link member 94,
If damaged, remove the grip cover 104, or
Only by shifting the endoscope to the flexible tube portion 15 side, the locking member 10
1 can be revealed. Further, since the approach is easy,
The locking member 101 can be easily attached and detached.
And replace the link member 94 and the wire fixing member 92.
As a result, repair for damage can be easily performed. The present invention is limited to the embodiment described above.
It is not something to be done. In addition, the items listed below or
Are obtained. <Additional remarks> Additional remarks 1; treatment instrument raising table opened at the distal end of the insertion section of the endoscope
Treatment chamber provided on the operation unit side of the endoscope
Is provided in the endoscope and the insertion port portion into which the
A guideway communicating the accommodation chamber with the insertion opening,
It is provided so that it can be raised in the room, and is inserted through the guideway.
Treatment instrument having a guide surface for guiding a broken treatment instrument in the leading-out direction
In an endoscope having an upper table, the treatment tool raising table is raised.
When it is made, the back of the guide surface of the treatment instrument
The distance to the surface of the accommodation room where the surface faces
Maximum at the open end of the containment chamber in the unexposed area
An endoscope characterized in that it is configured to be: Additional Item 2: The treatment instrument according to Additional Item 1,
The back of the guide surface of the table and the surface of the accommodation room
Distance decreases toward the fulcrum of the treatment instrument raising table
An endoscope characterized by being formed as follows. Additional Item 3; In Additional Item 1, the guide surface of the treatment instrument raising stand
Raising the treatment tool in the space consisting of the back and the accommodation room
The cross-sectional area at the cross section perpendicular to the back surface of the guide surface of the table is at the open end
An endoscope characterized by being configured to be the largest. Additional Item 4: The treatment instrument according to the additional item 3,
The cross-sectional area at the cross section perpendicular to the back of the guide surface of the table rises the treatment tool
It is formed so that it becomes narrower toward the pivot point of the table.
An endoscope characterized in that: Supplementary Note 5: In Supplementary Note 1, adjacent to each surface of the accommodation room
The characteristic feature is that the ridge line portion that is formed is a curved surface
Endoscope. Supplementary item 6: In Supplementary item 1, the guide surface of the treatment instrument raising stand
The constituent surface of the storage room facing the back is the tip of the endoscope insertion section
The treatment tool as an acute slope with respect to the axial direction
Characterized in that it is formed facing the rotation support point of the upper stand.
Endoscope. Additional Item 7; In the additional item 1, the treatment instrument is raised.
On the back side of the guide surface of the table, the treatment tool raising table rises to the maximum angle.
When operated, it is almost perpendicular to the opening surface of the tip
An endoscope characterized by being formed in. Additional Item 8; In the additional item 7, substantially perpendicular means that the opening surface is
Make sure that the angle between the back of the fixture raising stand and the back is 80 degrees or more.
Endoscope that features. Supplementary Item 9: In Supplementary Item 1, the guide surface of the treatment instrument raising stand
The surface of the storage room, whose back surface faces, is the opening of the storage room.
Smoothly inclines from the side toward the fulcrum of the treatment instrument raising table
An endoscope characterized by doing. Additional Item 10: Opening at the end of the insertion section of the endoscope
And a liquid feeder provided on the operation section side of the endoscope.
Or the insertion port through which the treatment instrument is inserted,
Guideway communicating with the entrance, and can be raised in the storage room
Up of a treatment instrument having a guide surface for guiding the treatment instrument provided on the
In an endoscope having a table, the guide surface of the treatment tool raising table
Raise a part of the elevator that is located on the side where the observation optical system is located
Projecting beyond the ridgeline of the slope that forms the guide surface of the platform
An endoscope characterized by forming a projection. Additional Item 11: In the additional item 10, the protrusion
Is provided near the longitudinal center of the treatment instrument raising table.
An endoscope characterized by being Additional Item 12; In Additional Item 10, the protruding portion is a guide surface.
Cross section perpendicular to the lateral direction has a slope inward of the guiding surface
Characterized by a shape approximating a right triangle
Endoscope. Additional Item 13; In Additional Item 10, the protruding portion may be
When raising the upper stand, make sure that it does not protrude from the storage chamber.
An endoscope characterized by being made. Additional Item 21; Flexible Tube and Tip of Flexible Tube
And a tip connected to the tip of the bending part
It has an insertion part consisting of a constituent part and forms the outer skin of the bending part.
The ends of the outer shell member to be formed are
In an endoscope fixed to the base end of the end component,
Wrap the outer peripheral surfaces of both ends of the leather with a thread-like member, and
A foreskin member is arranged on the outer peripheral surface of the material, and the foreskin member is heated and melted.
By melting, the outer surface slides against the outer surface of the insertion section.
An endoscope characterized by being arranged in a crab. Additional Item 22; In Additional Item 21, the foreskin portion
The material is characterized by being formed of thermoplastic resin
Endoscope. Additional Item 23; In Additional Item 21, the thread-like member includes a foreskin.
The feature is that adhesive is applied before arranging the members
Endoscope. Additional Item 24; In Additional Item 22, the thermoplastic resin is
An endoscope characterized by being urethane. Item 25; The thermoplastic resin according to Item 22;
The melting point of the conductive resin is lower than the melting point of the resin used for the flexible tube.
An endoscope characterized by something. Additional Item 36; In Additional Item 21, the foreskin member is black.
An endoscope characterized by something. Additional Item 27; In Additional Item 21, the foreskin member is a thread-like portion.
The surface in contact with the material is a black layer, and the surface exposed to the outside is transparent.
An endoscope having a two-layer structure having a bright layer. Additional Item 28; In Additional Item 27, the outside of the foreskin member is exposed.
The melting point of the starred layer is higher than the melting point of the layer in contact with the thread-like member.
An endoscope characterized by being low. Item 29; The adhesive according to Item 23,
Is an endoscope characterized by low viscosity. Additional Item 30; The adhesive according to Additional Item 29, wherein
Is characterized by having a viscosity of 8.5 Ps · s or less.
mirror. Item 31; In Item 23, the color of the adhesive is black.
An endoscope characterized by something. Additional Item 32; In Additional Item 21, the foreskin member may be an elongated
An endoscope characterized in that it is in the shape of a tube. Additional Item 33; In Additional Item 21, the thread-like member is black.
Endoscope characterized by the fact that Additional Item 34; In Additional Item 21, the outer skin portion
The inner diameter of at least both ends fixed part of the material is
It is characterized by being smaller than the outer diameter of the component to be attached
Endoscope. Additional Item 35; In Additional Item 21, the thread-like member may have 4
An endoscope characterized by being wound more than once. Additional Item 36; In Additional Item 21, the thread-like member is 2N or more.
An endoscope that is wound by a tensile force. Additional Item 37; In Additional Item 21, the distal end component is a main body.
And cover the hard tip,
At least outside the hard tip section.
A ring-shaped member is liquid-tight around the entire circumference where the leather member is attached.
An endoscope, wherein the endoscope is arranged. Additional Item 38; In Additional Item 37, the ring-shaped member
In the circumference, one end is connected liquid-tight with the tip cover.
Endoscope characterized by the fact that it is. Additional Item 39; In Additional Item 37, the ring
The member is a thin member made of metal foil.
Endoscope. The prior arts of the additional items 10 to 14 include the following.
There is JP-A-8-154890. Supplementary items 21 to 39
Japanese Patent Publication No. 62-23444 discloses a conventional technique.
And JP-A-9-299319. Problems with JP-A-8-154890
When the treatment instrument inserted through the insertion section projects from the endoscope end
Wall that comes into contact with the side of the treatment tool
If the instrument is held so that it is
The fixture can be raised without operating along the guide groove of the treatment tool raising table.
When it is raised to a certain angle, it falls into the guiding groove
That is, a so-called jump of the treatment tool occurs. In this case, during the endoscopic examination, the processing to the target site is performed.
The equipment cannot be guided, which may hinder the inspection.
You. Problems with Japanese Utility Model Publication No. 62-23444
Is the end of the ring-shaped band protruding from the surface of the mantle
And apply an adhesive etc. to prevent this part from getting caught
It had to be smooth. However, this work
Because it is about to enter the entrance, for work that finishes smoothly
Is highly skilled, and there is no
The point is that it gets bigger. Problems with JP-A-9-299319
Heat is applied to the flexible tube or the tip component that the skin member contacts.
Must be made of thermoplastics, and therefore thermoplastic
The diameter of the insertion part is increased by the thickness of the resin composition.
U. Also, a part of the outer shell member is formed of a thermoplastic resin,
The outer shell is partially thin because it is heated and melted during assembly.
This part may be subject to stress such as tension.
The point is that it is easier to break. The purpose of the additional items 10 to 14 is to insert
The purpose is to guide the treated instrument to the target site without fail.
You. The purpose of Supplementary Notes 21 to 33 is that high-skill
The fixed part at both ends of the member is smooth with respect to the tip part and the flexible tube.
To finish. The purpose of additional items 34 to 39 is to insert
In the part, to maintain the waterproofness of both ends of the outer member
is there. The effects of additional items 10 to 14 can be obtained by treating
In addition to guiding and protruding the tool without getting caught, treatment
Guide the treatment tool into the guide groove formed on the tool raising table,
Smoothly perform the work related to inspection and treatment by endoscope
It is to do. The effects of Additional Items 21 to 33 are
Reliable liquid-tight fixation of the skin member to the tip component and the flexible tube
In addition to the
Can be finished easily and smoothly without the need for
There is. The effect of Additional Items 34-39 is due to the
Due to the technical differences of the workers,
It is that it can be fixed in a liquid-tight manner without fail. As described above, the present invention provides a treatment instrument
Since the projection is provided on the upper table, the treatment tool is
When raising the treatment tool, raise the treatment tool that is shifted to the side.
Guide the treatment tool inserted into the insertion section
Guidance can be reliably obtained at the target site.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an entire system incorporating an endoscope and various external devices according to an embodiment of the present invention. FIG. 2 illustrates a distal end portion of an endoscope according to an embodiment of the present invention.
FIG. 4 is a vertical cross-sectional view along a treatment instrument raising table. FIG. 3 is a sectional view of a portion along the line BB in FIG. 2; FIG. 4 is a plan view of a distal end portion of the endoscope according to one embodiment of the present invention. FIG. 5 is a plan view of one state of use of the distal end portion of the endoscope according to one embodiment of the present invention. 6 (a) is a perspective view of a slope portion of the treatment instrument raising stand, and FIG. 6 (b) is a cross-sectional view of the slope portion cut along the X plane shown in FIG. 4 (a). FIG. 7 shows a distal end portion of the endoscope according to one embodiment of the present invention.
FIG. 4 is a longitudinal sectional view cut along the illumination lens and the objective lens. FIG. 8 is a cross-sectional view of a distal end portion of the endoscope according to one embodiment of the present invention. FIG. 9 is a cross-sectional view of a distal end portion of the endoscope according to one embodiment of the present invention. FIG. 10 is a vertical cross-sectional view of the distal end portion of the endoscope according to one embodiment of the present invention, taken along a treatment instrument raising table and showing a raising operation of the treatment instrument raising table. FIG. 11 is a longitudinal sectional view of the distal end portion of the endoscope according to one embodiment of the present invention, cut along the illumination lens and the objective lens. FIG. 12 is a cross-sectional view of a portion along the line DD in FIG. 11; FIG. 13 is a longitudinal sectional view of a bending tube part of the endoscope according to one embodiment of the present invention. FIG. 14 is a distal end portion of an endoscope according to one embodiment of the present invention,
FIG. 4 is a vertical cross-sectional view of an external connection portion of a curved tube portion and a flexible tube portion. FIG. 15 shows a distal end portion of an endoscope according to one embodiment of the present invention,
FIG. 4 is a vertical cross-sectional view of an external connection portion of a curved tube portion and a flexible tube portion. FIG. 16 shows a distal end portion of an endoscope according to one embodiment of the present invention,
The longitudinal section of other types of exterior connection parts of a curved tube part and a flexible tube part. FIG. 17 is a cross-sectional view of an operation unit for illustrating a raising table operation mechanism of the endoscope according to one embodiment of the present invention. FIG. 18 is a cross-sectional view of an operation unit for illustrating a raising table operating mechanism of the endoscope according to one embodiment of the present invention. [Description of Signs] 1 endoscope, 12 insertion section, 13 operation section, 14 universal cord, 15 flexible tube section, 16 bending section, 17
... tip part, 21 ... tip hard part, 22 ... tip cover, 23
... channel, 24 ... introduction guideway, 25 ... accommodation room, 26
... Treatment instrument, 27. Treatment instrument raising table, 28. Lifting table rotation fulcrum, 29. Guide surface, 34. Lifting wire, 45.

Claims (1)

Claims: 1. An accommodation space for a treatment tool raising base formed to open at a distal end portion of an insertion portion provided with an observation optical system of an endoscope, and an operation unit side of the endoscope. An insertion port through which the treatment tool is inserted, a treatment tool guide path formed inside the endoscope and communicating the storage chamber and the insertion port, and a raising operation into the storage chamber is enabled. A treatment tool raising table having a guiding surface for guiding the treatment tool, and a projection formed on a ridge located on a side of the guiding surface of the treatment tool raising table on which the observation optical system is arranged, and An endoscope comprising: a projection for guiding a tool to the guide surface.