JP2003052621A - Endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope wherein three operations such as air-feeding, water-feeding and spraying are operated by a single control button. SOLUTION: When a leak hole provided on the control button is closed, air is fed into an air-feeding duct. When the control button is moved to a first location, air and a liquid are fed into the inserting section. When the control button is moved to a second location, the liquid is fed into the inserting section. This endoscope is constituted in such a manner.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope. 2. Description of the Related Art As an endoscope having a plurality of bending mechanisms,
The Japanese Patent Publication No. 47-12398 discloses a multi-stage flexible
Flexible tubes (hereinafter abbreviated as flexible tubes) are known. this
The flexible tube has two curved portions, a main curved portion and a sub-curved portion.
The main bending operation wire for operating the main bending section and the sub bending section
And a sub-operation wire for operation. Further, the present applicant has filed Japanese Patent Application No. 2000-4645.
No. 3 has the same main bending section and channel as general endoscopes.
And a secondary bending portion for bending the main bending portion.
It has a main operating part for bending and a sub operating part for bending the sub bending part.
1 shows an endoscope. [0004] In addition, a conventionally used endoscope is used.
Is provided with operation buttons for air and water
Air supply and air supply provided at the end of the endoscope insertion section
It is possible to send air and water through the water channel
Has become. [0005] However, the above-mentioned features
Japanese Patent Publication No. 47-12398 discloses a flexible tube that can be bent in multiple stages.
Now, the structure and layout of the operation wire connection
did not exist. In addition, the operation wire of the sub-bend
The main bending section and the sub-curving section are
It is difficult to assemble them as independent units.
As a result, assembly workability was poor. On the other hand, in the aforementioned Japanese Patent Application No. 2000-46453,
Curves the main bending section and channel similar to a general endoscope
And a secondary bending portion for bending the main bending portion.
It has a main operation section and a sub operation section for bending the sub bending section.
However, regarding the connection position between each operation section and the bending operation wire,
Was not mentioned. In addition, for example,
Because it is a configuration that only bends in two directions up and down,
If external force is applied from the
It was. [0007] In a conventional endoscope, a single operation is required.
Three operations of air supply, water supply, and spray by the operation button
There was nothing to make. SUMMARY OF THE INVENTION The present invention provides an elongated insert.
And an operation unit provided on the hand side of the insertion unit.
In the endoscope, it is arranged on the operation unit, and from the normal position.
Operation button moved to the second position via the first position
Provided in the control unit of the operation button, the operation button
Provided on the operation button when is in the normal position
The hole communicates with the outside through the hole and the leak hole is closed
Means for feeding air into the air supply line,
Button on the control unit, and the operation button is in the first position.
When moved, air and liquid are injected into the insertion portion.
Sending means, provided in a control unit of the operation button,
When the operation button is moved to the second position,
Means for feeding liquid to the inlet.
Features. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention;
An embodiment will be described. 1 to 4 show a first embodiment of the present invention.
FIG. 1 is a diagram illustrating an endoscope system according to an embodiment.
2 is a view for explaining the configuration of the operation unit, and FIG.
FIG. 4 is a view of the inside of the operation unit from FIG.
FIG. 4 is a cross-sectional view near a cover member. As shown in FIG. 1, an endoscope system according to this embodiment is
The system 1 includes an endoscope 2 described later and a light source for supplying illumination light.
Device 3 and an electric signal and a driving signal for driving an image sensor (not shown).
And generate an electric signal transmitted from the image sensor to a video signal.
Video processor 4 and an endoscope receiving this video signal.
And a monitor 5 which is a display device for displaying images.
I have. The endoscope 2 is inserted into a body cavity.
Part 6 and a grip part 7a located at the base end of the insertion part 6.
Operating unit 7 and a unit extending from the side of the operating unit 7.
And a versal code 8. The front end of the universal cord 8 has a front end.
Endoscope connector 8 detachably connected to light source device 3
a from the endoscope connector 8a.
The electrical connector 9a connected to the video processor 4
An electric cable 9 provided at the base end extends. The insertion portion 6 is hardened at the tip end in order from the tip side.
The part 11, the main bending part 12, the sub bending part 13, and the flexible tube part 14
It is installed continuously. Observation (not shown) on the distal end hard portion 11
Optical system, illumination optical system, channel opening, air / water supply nozzle
Slurs and the like are provided. The main bending section 12 is operated by the operating section 7.
The main operation unit 72 and the auxiliary operation unit that constitute the bending operation means for performing
A sub-constituting a bending operation means for operating the bending portion 13
An operation unit 73 is provided. The grip 7a includes a main operation unit 72 and a sub operation unit.
It is provided on the insertion section side of the working section 73. Also insert
At the connection between the part 6 and the operation part 7, the insertion part
The operation part break prevention member 15 for preventing
ing. As shown in FIG. 2, a main plate 21 is
Is arranged. This base plate 21 constitutes the operation unit 7
It is a skeletal member, the sub-operation part exterior member 22, the main operation part exterior
The member 23 and the grip exterior member 24 are mounted. The main plate 21 at the position where the main operation section 72 is formed
Has a first support 31 standing upright. On this first support 31
Is a vertical sprocket 32 and a horizontal sprocket 33
Is provided outside the operation unit exterior member 23.
The upper and lower knobs 34 and the left and right knobs 35
Respectively. The vertical sprocket 32 and the left and right sprockets
The upper and lower chains 36 and the left
The right chain 37 is attached, and each chain
The upper and lower connecting portions 3 which are connecting members
8 and the left and right connecting portions 39, respectively.
The ear 40 and the left and right operation wires 41 are connected. Soshi
Between the vertical connecting portion 38 and the left and right connecting portion 39.
The upper and lower connecting portions 38 and 39 interfere with each other.
A first partition plate 43 is provided to prevent the first partitioning plate. On the other hand, the position where the sub-operation unit 73 is formed
The second support 4 is provided on the base plate 21 in parallel with the first support 31.
2 stands. The second support 42 projects from the main plate 21.
At the protruding tip, a sub-up / down sprocket 44 is provided.
And is disposed outside the sub-operation unit exterior member 22.
It turns with the turning operation of the sub-up / down knob 45.
ing. The sub-up / down sprocket 44 has a sub-operation
A vertical chain 46 is attached, and this sub-operation vertical
The end of the chain 46 is connected via a sub-upper / lower connecting portion 47.
Each of the sub-up / down operation wires 48 is connected. The up / down operation wire 40, the left / right operation wire
41, the auxiliary vertical operation wire 48 is
A coil pie fixed to a partition wall 49 provided at the entrance side end
83U, 83D, 83L, 83R, 86U, 86D
Has been inserted respectively. As shown in FIG.
Chain 46 attached to the sub-operation 44
Is set to a predetermined direction by the chain slider 51.
And the parallel portion 52 is formed.
The sub operation upper and lower chain 46 has an end
The auxiliary operation wires are respectively provided via the lower connecting portions 47U and 47D.
The ears 48U and 48D are attached. The average
The row section 52 is inclined obliquely with respect to the grip section 7a of the operation section 7.
By attaching it in a state where it is
The 7 stroke is made as long as possible. The sub-upper and lower connecting portions 47U and 47D are
The two partition plates 53 are used to connect
Interference is prevented. The sub-upper / lower connecting portion 4
7U, 47D and sub operation vertical switches located at both ends thereof.
Chain 46 and sub-operation wires 48U, 48D
The first cover member 54 prevents interference with the
Covered. That is, as shown in FIG.
Second partition plate 53 and first cover member 54 provided on one surface side
The auxiliary operation wires 48U, 48D, and the connection for the auxiliary upper and lower
Parts 47U, 47D, parallel parts of sub-operation vertical chain 46
Interference at 52 is prevented. On the other side of the base plate 21, a cross shape is provided.
The third partition plate 55 and the second cover member 56
Lower operation wires 40U, 40D, upper and lower connecting portions 38U, 3
8D, up and down chain 36 and left and right operation wires 41L,
41R, left and right connecting parts 39L, 39R, left and right chain
The interference in the parallel section 52 of 37 is prevented. As described above, the inside of the grip portion located on the insertion portion side
The chain for the main bending section and the sub bending section and the operation wire
By arranging connecting parts to connect,
Connection can be made simultaneously in the main bending section and the sub bending section.
You. In addition, separate operations are performed on one side and the other side of the main plate.
The operation wire for the main bending section can be connected.
And the auxiliary bending section operation wire by mistake.
Can be prevented. Work by these
As a result, the erroneous assembly is reliably prevented. FIGS. 5 and 6 show a second embodiment of the present invention.
FIG. 5 is a diagram illustrating another configuration of the operation unit, and FIG.
It is a figure explaining the knob provided in the working part. 5 and 6
As shown, in the present embodiment, the size of the operation unit 7 is reduced.
The sub-up / down knob 45, which was the sub-operation unit 73,
The upper and lower knobs 34 and the left and right knobs 35 that were the operation unit 72
It is arranged integrally with the support column 61. For example, the support 61 is located on the side of the operation unit.
Upper and lower knobs with larger diameter, larger claw shape on the periphery and smallest number of claw in order
34, the claw shape is smaller and the number of claws smaller than the upper and lower knobs 34
Left and right knobs 35 with a large number, the smallest diameter and the smallest claw shape
The auxiliary vertical knob 45 with the largest number of claws is mounted coaxially
I have. In addition, the main plate 21 has an auxiliary
Up and down sprockets 44 are provided, and a knob on the other side
Up and down sprocket 32 and left and right sprocket 3
3 are provided. In this embodiment, the support 61 is
When arranging the number of knobs, the upper and lower knobs 34, the left and right knobs 35,
The order of the sub-up / down knob 45 is the same as that of the present embodiment.
It is not limited to the state. However, depending on the shape of the knob,
In other words, the above-described relationship is established. Also, the chains 36, 3
7 and 46 and operation wires 40, 41 and 48
The connection parts 38, 39, 47 are inside the grip part 7a. further,
Depending on the space in the grip part 7a, the connecting parts 38, 39,
47 is arranged on one side of the main plate 21 or the main plate 2
1 is arranged on one side and the other side. Other structures
The structure is the same as that of the first embodiment.
And the description is omitted. As described above, the main operation unit and the sub operation unit are integrated.
To further reduce the size of the operation unit
Can be. Other functions and effects are the same as those of the first embodiment.
The same is true. FIGS. 7 and 8 show a third embodiment of the present invention.
FIG. 7 is a diagram showing another configuration of the operation unit, and FIG.
FIG. 3 is a diagram for explaining the configuration of a sub-operation unit in FIG. 7 and 8
In the present embodiment, as shown in FIG.
In order to prevent erroneous operation with
The unit and the sub-operation unit are arranged on the operation unit. As shown in FIG. 7, in this embodiment,
The operation unit 72 is arranged at the same position as in the first embodiment.
On the other hand, the sub-operation unit 73 is grasped from the main operation unit 72 on the insertion unit 6 side.
It is arranged on the tip side of the holding portion 7a. As shown in FIG. 8, the sub operation unit 73
Operation for moving the working wires 48U and 48D forward and backward
Boss 62 is provided. Operate this operation knob 62
This allows the operation knob 62 to be
And a drum rotatably mounted on the main plate 21
The reel 64 rotates. A pulling wire 65 is attached to the drum reel 64.
U and 65D are attached, and each
At the ends of the gears 65U and 65D arranged on the main operation unit 72 side.
Are the auxiliary operation wires 48U, 48D connected to the connecting portions 66U, 66D.
Are connected via These pulling wires 65U, 65
D secures the moving stroke of the connecting parts 66U and 66D.
In this state, it is connected to the drum reel 64. The sub-operation wires 48U, 48D
The base plate 2 is positioned substantially at the center of the grip 7a.
1 by pulleys 67U, 67D rotatably arranged.
Therefore, the extension direction is reversed by 180 °, and
5U, 65D. And the connecting portion 6
6U and 66D are the moving distances of the connecting portions 66U and 66D.
It is arranged in longer guide members 68U, 68D,
It is prevented from being caught by other internal components. Other
The structure is the same as that of the first embodiment.
And the description is omitted. As described above, the extending direction of the operation wire is set to 18
Place the pulley to be turned 0 ° near the center of the gripper.
The main plate is rotatable so that it can be
Move the operation unit to the gripper tip side, which is a position away from the main operation unit.
Can be arranged. This allows the main operation unit and
Incorrect operation of the sub-operation unit is prevented. Other
Are the same as those of the first embodiment. Here, referring to FIG. 9 to FIG.
The structure of the main bending portion 12 and the sub bending portion 13 of the mirror 2 will be described.
You. FIG. 9 shows a main bending portion and a sub bending portion constituting the bending portion of the endoscope.
FIG. 10 is a view for explaining a part, and FIG.
FIG. 11 is a diagram showing a relationship between a curved portion and a node ring, and FIG.
FIG. 12 is a sectional view taken along line DD of FIG. 9, and FIG.
FIG. 14 illustrates a configuration example of a node ring of a main bending portion.
The insertion direction of the upper wire extending from the curved portion and the sub-bend
FIG. 15 shows a positional relationship, and FIG.
FIG. 16 illustrates the main bending portion and the sub bending portion.
FIG. 17 shows the curved state of FIG.
FIG. 18 shows the positional relationship of the operation wires when viewed from above.
FIG. As shown in FIG. 9, the distal end of the insertion portion 6
Is connected to a plurality of node rings 12a so as to be rotatable up, down, left, and right.
A main bending portion 12 configured to bend downward and leftward is provided.
A connecting base 81 is provided at the base end of the main bending portion 12.
A plurality of articulation rings 13a are rotatably connected up, down, left and right through
A sub-bending portion 13 configured to bend vertically
Have been killed. This makes it possible to rotate
Uses articulation rings to bend in any direction of the patient
The sub-bend 13 is always smoothly inserted into the body cavity
They are being removed. As shown in FIG. 9 and FIG.
The main bending portion 12 is attached to the distal end ring 12f
Of vertical operation wires 40U and 40D to bend to
Left and right operation wires 4 for bending at the end and in the left and right direction
The tip of 1L, 41R is brazed and fixed in place
I have. These up / down operation wires 40U, 40D, left / right operation
The wires 41L and 41R are provided on the node ring 12a of the main bending portion 12.
Through the wire receiver 82 that is
The coiled pipe 83U, 83D, 83L, 83R
Has been inserted. On the other hand, the upper and lower parts
Of sub-operation wires 48U and 48D for bending in the opposite directions
The end is brazed and fixed to the distal node ring 13f of the auxiliary bending portion 13.
Have been. These auxiliary operation wires 48U and 48D are connected to the auxiliary bay.
Through the wire receiver 84 provided on each of the node rings 13a of the bending portion 13
Coil pipes 86U, 8 provided in the flexible tube tip cap 85
6D. As shown in FIG. 10 and FIG.
2 formed at the base end of the rear end ring 12e located at the rear end.
An uneven portion and a distal node ring 13 located at the distal end of the auxiliary bending portion 13
f is engaged with the uneven part formed at the tip of f
Then, it is integrally fixed to the connection base 81 with a screw 87.
Have been. As shown in FIG. 11, the screw 87 is
Top and bottom left brazed and fixed inside the connection base 81
Right, operation wires 40U, 40D, 4 for each direction
A plurality of coil pipes 83U, 8 through which 1L, 41R are inserted
About 45 degrees so as not to interfere with 3D, 83L, 83R
They are arranged in a tilted positional relationship. Note that these
The insertion pipes 83U, 83D, 83L, 83R
6. The partition 49 in the operation unit 7 which has passed through the inside and has a base end portion as described above.
Fixed to. As shown in FIG. 12, the tip of the auxiliary bending portion 13 is provided.
Sub operation wire 48U brazed and fixed to 13f,
The diameter dimensions of 48D are the operation wires 40U, 40D, 41
Larger diameter than L and 41R
The tension strength is increased. As shown in FIG. 13, the node ring 1 of the main bending portion 12
2a has a rotating portion 75 that is rotatable about a horizontal axis.
And a rotating part 76 rotatable about a vertical axis.
are doing. The wire receiver 82 provided on the node ring 12a
The up and down operation wires 40U and 40D inserted through
To bend up and down around the rotating part 75,
Advance / retreat of left and right operation wires 41L and 41R inserted through 82
Thereby, it bends in the left-right direction about the rotation part 76. Ma
The main bending portion is also provided at the node ring 13a of the sub bending portion 13.
Same as 12, free rotation about horizontal axis and vertical axis
It is. Note that, as shown in FIG.
The ear 40U is disposed at a position directly above the main bending portion 12.
And a position slightly deviated from the position directly above the sub-bending portion 13.
The upper and lower operation wire 40U is inserted
The coil pipe 83U to be moved
The sub-curved portion 1
The sub-operation wire 48U in 3 is arranged at the position directly above
I have. With this, the vertical operation wire 40U
And the auxiliary operation wire 48U are aligned with the insertion direction.
, For example, the main bending portion 12 and the sub bending portion 13
When both are bent upward, the main bending portion 12 and the secondary bending portion
It is possible to bend the portion 13 without displacing it.
Wear. Thereby, the operability is improved. In FIG. 14, the vertical operation wire 40U and the auxiliary
Although the description has been made on behalf of the relationship of the operation wire 48U,
The composition is not limited to the upper direction, but the lower direction, the left
It can be applied to the right and left directions.
This greatly improves the operability of bending in the desired direction.
Can be In FIG. 13, the vertical axis and the horizontal axis
Rotating parts 75, 76 are provided to bend parts 12, 13 up, down, left, right
But it was curved up and down.
The vertical axis becomes free when left or right
It is easy to move. Therefore, as shown in FIG.
To the node ring 13a of the sub-bend 13, right and left with respect to the vertical direction
The oblique rotation parts 77 and 7 are respectively attached to the oblique rotation axes inclined at 45 degrees.
8 are provided, and wire receivers 82 are provided above and below in the vertical direction.
The auxiliary operation wires 48U and 48D are inserted. Thus, the operation wires 48U,
When the tow operation is performed on the 48D, the four rotating portions of the node ring 13a
With the 77 and 78 moving at the same time, they bend in the vertical direction.
That is, in the sub-bending portion 13 having the oblique rotation portions 77 and 78,
Applies force to all four pivots when bent up and down
Because it is hard to swing left and right by external force, stable operation
Can be obtained. The operation of the curved portion configured as described above will be described.
I do. By operating the up / down knob 34, the main bending portion 12 is compared.
If the bending operation is performed downward, the sub-up / down knob 45 is operated.
When the auxiliary bending portion 13 is operated to bend upward, for example,
The bending portions 12 and 13 are bent as shown in FIG. this
At the time of the bending operation, the auxiliary bending portion 13 is attached to the main bending portion 12.
The main bending part 12 is bent because there are many built-in objects to be inserted.
A larger bending force is required than when bending
Changes the diameter of the sub-operation wires 48U and 48D
Thicker than diameter of ears 40U, 40D, 41L, 41R
Because the diameter and the tensile strength are increased, the sub-bend 13
It bends smoothly. Note that the left and right knobs
35 is not operated to bend in the left-right direction. When the curved portions 12 and 13 are respectively
When in the state of being curved upward, as shown in FIG.
For example, an external force F is applied to the main bending portion 12 from the right direction.
The main bending portion 12 and the sub bending portion 13 are vertically
The node rings 12a and 13a are connected to be able to bend left and right.
Then, the main curved portion 12 is curved as shown by the broken line,
Of the curved rubber and the rotation of the left and right knobs 35
Releases the applied force and turns the curved rubber that covers the sub-bend 13
To release the force applied by the articulated ring 13a
I will continue. As described above, the connecting base and the screw are used to
The main bend that connects several node rings and multiple node rings are connected
The main operation is achieved by the configuration that
It is possible to assemble the working unit and the sub operation unit independently
it can. As a result, the workability of assembling the curved portion is improved.
Improve in width. Also, a coil pipe is previously inserted into the connection base.
By attaching and fixing, the assembly workability is good.
You. In addition, the sub-bend with the sub-up / down operation wire
Even though it is curved, it can be bent downward and left
When an external force is applied from a direction different from the operable direction
However, since the sub-curved portion bends in the direction of the external force,
It can prevent the condition from occurring and the curved part from being damaged.
You. Further, the auxiliary operation wire is determined by the diameter of the operation wire.
Large diameter and increased tensile strength
The amount of bending force when bending the main bending section and the secondary bending section.
Good balance of strength with bending force when bending
And endurance as a whole
Can be improved. The vertical operation wire 40 and the auxiliary vertical operation wire
As shown in FIG.
The vertical operation wire 40 is at an angle α (α is 30 degrees or
Coil pie so that it is positioned at an angle
While the step 83 is brazed and fixed,
At a position symmetrical to the vertical operation wire 40 with respect to a vertical axis.
It will be placed at a position inclined at an angle-α so that there is a relationship
By brazing to the node ring 13f
For example, even if the upper and lower operation wires 40 are bent at an angle of α degrees,
Since it bends at an angle of -α degrees by the up / down operation wire 48,
The inclination of the entire curved section is canceled and the desired curved state is achieved.
can get. Referring to FIGS. 19 (a) and 19 (b),
13 will be described. The insertion portion of FIG.
As shown in the diagram for explaining the configuration, the sub-bending portion 1 of the present embodiment
Of the sub-operation wires 48U and 48D inserted through the end 3
Each part is fixed to the distal node ring 13f, and the proximal end is
The tip of which is brazed and fixed to the flexible tube tip cap 85
Pass through partition pipes 49 through the inside of the oil pipes 86U and 86D
And extends to the operation unit 7. The auxiliary operation wire 48U is a drum reel.
The base end of the drum reel 92 is wound around the drum reel 92.
Fixed in position. The drum reel 92 has an auxiliary operation
The sub-operation lever 93 constituting the working unit 73 is attached
By rotating this sub-operation lever 93,
The drum reel 92 is rotated, and the sub-operation wire 48U is
It is towed. The drum reel 92 is elongated in the circumferential direction.
A notch hole 92a is formed, and this notch hole 9a is formed.
A stopper 96 projecting from the main plate 21 is engaged with the 2a.
Have been. On the other hand, the sub-operation wire 48D is
9 through one end of a coil spring 94 that is in close contact with one end.
Wire stopper that can be moved back and forth in the longitudinal direction
95. This wire stopper 95 has a front
The other end of the coil spring 94 is in close contact. For this reason, the wire stopper 95 is
As shown in the figure, the urging force of the coil spring 94
Urged toward the drum reel 92 side. This and
And the stopper 96 is provided on one side of the notch hole 92a.
The sub-curved portion 13 is in a straight line
Become. When bending the sub-bending portion 13, FIG.
As shown in FIG. 9 (b) showing a state in which the sub-curved portion is curved.
Lower the sub-operation lever 93 toward the user. Then, Drumley
Is rotated to move the auxiliary operation wire 48U to the drum
The secondary bending portion 13 is bent by being pulled while being wound around the ruler 92.
State. At this time, the auxiliary operation wire 48D is
Move to be pulled. By this,
The wire stopper 95 biases the coil spring 94.
Against the force, that is, compressing the coil spring 94
While moving toward the tip. Then, as shown in the figure,
The topper 96 hits the other side of the cutout hole 92a.
In this state, a maximum bending state can be obtained.
Therefore, the tilt angle of the sub operation lever 93 is appropriately adjusted.
As a result, the traction force of the auxiliary operation wire 48U and the
With the biasing force of the il spring 94, the
The bending operation is controlled. As described above, of the two sub-operation wires,
Prescribe one wire by the biasing force of coil spring
Direction and the other wire is turned by the operating lever
Fixed to the drum reel
Since the bending operation can be performed, the structure of the sub operation unit can be simplified.
Can be. As a result, the main bending portion and the sub bending portion
The endoscope provided with is provided at low cost. A coil spring 94 is attached to the operation section 7.
Instead of arranging and urging the wire stopper 95
FIG. 20A shows another configuration of the insertion portion as shown in FIG.
For example, the sub-curved portion 13 has an elastic force at an inner circumferential position on the lower side.
Elastic shuffle that keeps a straight line in the normal state.
To the lower shaft receiver 98D of each joint 13a.
It may be arranged. This allows the sub-operation
When the lever 93 is tilted, the sub-curved portion shown in FIG.
As shown in the figure showing the bent state, the elastic shaft 97
The auxiliary bending portion 13 bends against the elastic force. And co-operation
Change the inclination of the operation lever 93 to the position indicated by the broken line, for example.
By moving, the elastic force of the elastic shaft 97 is reduced.
Therefore, the bending state of the auxiliary bending portion 13 changes as shown by the broken line.
Let me do. Here, referring to FIG. 21 and FIG.
The air supply / water supply of the mirror will be described. FIG. 21 shows the transmission of the endoscope.
FIG. 22 is a view for explaining the air and water supply pipelines, and FIG.
It is a figure explaining the relation between operation, air supply, and water supply action. FIG. 22 (a) shows an air supply / spray / water supply box.
Indicates that air is being supplied by closing the leak hole of the tongue with a finger.
FIG. 22B is a diagram showing a state in which spraying is performed.
FIG.22 (c) is a figure which shows the state which is performing water supply. As shown in FIG. 21, the endoscope 2 of the present embodiment
Is opened at the distal end hard portion 11, for example, at the objective lens 100.
It has a nozzle 101 whose mouth is opposed to this nozzle 101
The air supply / water supply line 102 is in communication. This air supply and water supply
An air supply line 103 and a water supply line 104 communicate with the line 102.
are doing. The air supply line 103 and the water supply line 104 are
Operation buttons to control air supply, spraying, water supply, etc. are provided.
To the control unit 105. This control unit 105
Is an air supply pipe line 107 connected to the air supply pump 106.
And the liquid supply supply line 10 connected to the water supply tank 108.
9 are in communication. The air pump 106 was connected to the
The air supply pipe 107 branches off in the middle and is
08 to send air. In addition, the liquid sending
The end of the supply pipe 109 is submerged in the liquid. further,
The air pressure from the air supply pump 106 is
8 and the operation buttons, usually this operation button
Leaked. Further, “spray” refers to the air supply line 103.
And both the water supply line 104 and the water supply line 104
The air is mixed and ejected from the nozzle 101 in the form of a mist.
That means. Referring to FIGS. 22 (a), (b) and (c)
The control unit 105 will be described. The control unit 105 controls the operation unit 7
The outer cylinder 111 provided, and the outer cylinder 111
It is slidably and detachably arranged for air supply, spraying and water supply.
It mainly comprises an operating member 112 to be controlled. At the peripheral portion of the outer cylinder 111,
The communication part 113 of the liquid supply pipe 109 and the water supply pipe in this order.
Communication part 114 to the passage 104 and communication of the air supply pipe 107
A communication part 115 and a communication part 116 to the air supply conduit 103 are provided.
Have been. An inner shell is provided above the inner surface of the outer cylinder 111.
A binder 117 is provided. This cylinder 117
Attach the operating member 112 to the outer cylinder 111
Mounting portion 117a is formed. This mounting part
A mounting rubber 118 is arranged on the outer periphery of 117a.
You. An operation is performed further inside the inner cylinder 117.
A piston 119 constituting the member 112 is provided.
You. A button portion 112a is provided at an upper end of the piston 119.
Is provided. These piston 119 and button part 1
A leak hole 121 is formed substantially at the center of 12a,
The leak hole 121 is located in the middle of the piston 119.
Communicates with the inner opening 122 that communicates with the inner cylinder 117
ing. At the inner side of the mounting portion 117a, the piston
A weak spring 123 is disposed around the housing 119. This
The upper end of the weak spring 123 has a strong
A web 125 is provided. The upper end of this strong spring 125
It is in contact with the button portion 112a. In other words,
The biasing force of the springs 123 and 125 arranged on the attachment portion 117a
As a result, the pin integrally fixed to the button portion 112a
The ston 119 is urged upward. The upper side of the inner opening 122 of the piston 119
Is provided with an inner seal part 126 for the purpose of ensuring airtightness.
This inner seal portion 126 is
It adheres to the inner surface. Also, beneath the inner opening 122
Is provided with a switching seal 127, and the piston 1
When the seal 19 is pushed downward,
7 comes into contact with the inner peripheral step portion 128 of the inner cylinder 117 and is airtight.
Is to be secured. The outer periphery of the piston 119 is
The communication part 114 of the water supply pipe 104 and the air supply pipe 1
07, a blocking seal 131 for blocking the communication portion 115;
At the lower end side of the shut-off seal 131,
The communication part 113 of the supply pipe 109 and the water supply pipe 104
The water supply seal 132 that opens and closes with the communication portion 114 is
Is provided. Further, the shut-off seal 131 and the water supply seal
132 between the piston 119 and the outer cylinder 111
Between the outer cylinder and
It has a positioning function of the piston 119 with respect to 111
A piston slider 133 is provided. With the provision of the blocking seal 131,
Therefore, even when the piston 119 moves,
Water tightness and air tightness between the piston 111 and the piston 119 are secured.
Is done. The water supply seal 132 includes a piston 119
Is in close contact with the outer cylinder 111 when it has not moved at all.
To ensure watertightness. This allows the liquid supply
Communication part 113 of water pipe 109 and communication part of water supply pipe 104
114 is cut off. And the piston 11
9 (b) and FIG.
2 (c), the communicating portion 1 of the liquid supply pipe 109
13 and the communicating part of the water supply conduit 104,
State. The mounting portion 117a and the inner cylinder
A check valve 134 is provided at a connection portion with the damper 117.
You. This check valve 134 is provided with a seal portion,
Check the airtightness between the inner cylinder 117 and the outer cylinder 111.
I keep. The check valve 134 is connected to the inner cylinder 1
17 and covers the outer opening 135 provided in
Inside the inner cylinder 117, that is, on the piston 119 side
When pressure is applied from the
It is designed to fit in. The communication part 116 of the air supply line 103 and the
Inner syringe between the communication part 115 of the air supply pipe 107
An air supply seal 136 is provided on the outer periphery of the die 117.
The air supply seal 136 is in close contact with the outer cylinder 111.
It is airtight. An outer cylinder is provided below the air supply seal 136.
Position the inner cylinder 117 with respect to the
An inner cylinder slider 137 is provided. Ma
A lower opening 138 is provided at the lower end of the inner cylinder 117.
Have been. From the lower opening 138 to the outer opening 135
Air communication between the inner cylinder 117 and the piston 119
Clearance is ensured. Furthermore, below
Air is communicated from the opening 138 to the leak hole 121.
Clearance is secured. Here, the leak, air supply, and injection
The operation at the time of fog and water supply will be described. First, let's talk about leaks
I will tell. The air entering from the air supply line 107 is
After passing through the lower opening 138, the inner cylinder 117 and the piston 1
19, clearance through inner opening 122
It reaches the hole 121. And, of this leak hole 121
If the opening is not closed by a finger, the leak hole 12
The air supplied from 1 leaks out. At this time, the communication section of the liquid supply pipe 109
For example, water for liquid transfer from 113 to the bottom of the outer cylinder 111
Is supplied by the water supply seal 132 even if the
Communication between the communication part 113 of the supply pipe 109 and the water supply pipe 104
Water supply is cut off because communication with section 114 is blocked
Is done. Next, air supply will be described. Perform insufflation
In this case, in the above-described leak state, FIG.
As shown, the opening of the leak hole 121 is closed with a finger. Then
From the communication portion 115 of the air supply pipe 107 to the outer cylinder 1
11 enters the inner cylinder through the lower opening 138.
Clearance between piston 117 and piston 119, inward opening
It reaches the leak hole 121 through the port 122,
Because the opening of the hole 121 is closed by the finger,
Lose. On the other hand, the piston 119 and the inner cylinder 117
Since the inner seal portion 126 seals the inner seal portion 1
Even before 26, the air loses its place. [0107] By these things, the air that has lost its place
Finally check from the outer opening 135 of the inner cylinder 117
The valve 134 is expanded and the inner cylinder 117 and the outer cylinder 1
It enters the space between 11. The check valve 134 is thick on the upper side.
Therefore, seal between the outer cylinder 111 and the inner cylinder 117.
To Further, the air supply seal 136 is attached to the inner cylinder 1.
The space between 17 and the outer cylinder is sealed. this
Therefore, the air flowing out of the check valve 134 is connected to the air line 103.
It is supplied to the communication unit 116. Therefore, the air supply line 103
Is supplied to the air through the air / water supply line 102
The gas is ejected from the nozzle 101 to be in an air supply state. Next, the spraying will be described. Spray
At this time, as shown in FIG.
With piston 1 closed, piston 119 has stroke "a"
Push-in operation. Then, the weak spring 123 becomes a strong spring.
125 is compressed with a weaker force than the force that begins to shrink,
The spring receiver 124 abuts the mounting portion 117a. Then, the water supply seal 132 is connected to the outer cylinder
It will be away from 111. As a result,
Communication between the communication part 113 of the supply pipe 109 and the water supply pipe 104
The communication with the unit 114 is established. On the other hand,
A portion above the communication portion 114 is provided by a blocking seal 131.
The space between the outer cylinder 111 and the inner cylinder 117 is tight.
It is closed. For this reason, supply to the bottom of the outer cylinder 111
The water that continues to be supplied is the inner cylinder 117 and the outer cylinder 111
Through the space formed by the
Thus, the water is supplied from the communication portion 114 to the water supply conduit 104. This
At this time, the status of the air supply line 103 is
Has not changed. Therefore, the air supply line 107
The air supplied from the communication section 115 passes through the communication section 116.
The air continues to be sent to the air supply line 103. Therefore, the water supplied to the water supply line 104 was
Water and air supplied to the air supply line 103 are supplied and supplied.
A state where water and air are mixed together in the pipe 102
, And is sprayed from the nozzle 101 to be in a spray state. Finally, water supply will be described. Water supply
At this time, as shown in FIG.
Stroke piston 119 while closing 1 "
Push-in operation by stroke "b" in addition to "a"
I do. In this state, the spring receiver 124 has already
Since it is in the hit state, only the strong spring 125 is contracted,
The button portion 112a approaches the spring receiver 124. At this time, the cutting provided on the piston 119
The replacement seal portion 127 is the inner peripheral step portion 1 of the inner cylinder 117.
Hits 28. Then, the air supply line 107 is connected.
Air that has entered through the passage 115 is pierced through the lower opening 138.
Clearance between stone 119 and inner cylinder 117
But is blocked by the switching seal 127.
You lose your place. The communication section 11 of the air supply pipe 107 is also provided.
5 above the inner cylinder 11 by the air supply seal 136.
The space between 7 and the outer cylinder 111 is sealed
So lose your place. Further, the connection of the air supply pipe 107
The lower part of the passage part 115 is externally sealed by a blocking seal 131.
The space between the piston 111 and the piston 119 is sealed.
Lose their place. That is, the air supply pipe 10
7 was supplied into the outer cylinder 111 from the communication portion 115.
The air loses its place completely. On the other hand, the communication portion 11 of the liquid supply pipe 109
The water supplied from 3 changes when spraying as described above.
Water is not supplied from the communication section 114 to the water supply conduit 104.
Paid. Therefore, the water supplied to the water supply pipeline 104
Ejected from nozzle 101 through air / water supply line 102
And it becomes a water supply state. As described above, the operation button of the two-stage push structure is
Spray condition that you want to use more frequently
Function by pushing it one step down,
Lighten the ability to reduce user fatigue
You. Further, the spray state of the first stage and the water supply state of the second stage
Since the amount of pushing force differs greatly from the state, the surgeon
Without checking the control status,
It is easy to grasp whether the state is
it can. [0099] The water supply state is used as needed.
Operation even if the spring force is large
Since the frequency is low, there is no problem with usability.
No. Here, the characteristics of each unit of the control unit 105 will be specifically described.
explain. First, details around the mounting portion of the operating member in FIG.
As shown in FIG.
The inner seal portion 126, the piston 119, and the inner seal
The operation of the operation member 112 is
It has a non-functional space 140 that does not have any function related to the work
ing. This space 140 is filled with disinfectant
Difficult and can cause contamination. For this reason, the operation member 112 of this embodiment
Is formed by cutting the outer periphery of the piston 119 and disinfecting the passage 171.
Is formed. Also, the outer peripheral surface of the spring receiver 124 is also erased.
A venom opening 172 is provided. This disinfecting passage 171 is provided in the same manner as in FIG.
As shown in the sectional view taken along the line EE of FIG.
117a is formed in a substantially semicircular cross-section on the fitting surface.
Have been. Without this disinfecting passage 171,
The structure is such that sterile liquid is extremely difficult to pass through. As described above, by providing the disinfecting passage,
Therefore, when the operation member 112 is immersed,
The liquid circulates into the non-functional space to ensure sterilization and sterilization.
I can. Next, the operation member shown in FIG.
And the bottom of the outer cylinder
The water supply seal 132 provided on the bottom side of the ton 119
Without forming a symmetrical shape with respect to the
Instead of providing the protrusion 132a substantially at the center in the vertical direction,
It is arranged close to the bottom. This allows you to
The contact state with the damper 111 is released with a small stroke
Therefore, the moving distance K after releasing the close contact state can be increased. What
The water supply seal 132 is located at the bottom of the piston 119.
It is fitted and arranged in the formed groove 141. As described above, the protrusion provided on the water supply seal
By setting the position of the part on the bottom side than the center,
Ensuring a sufficient movement stroke even with two-step pushing
Can be. This allows the surgeon to be in
It is easier to grasp the state. In addition, the water supply seal is located at the bottom of the piston.
The piston is inserted into the groove
The metal part is the bottom part of the
The damage to the water seal.
Can be. FIG. 26 shows a modification of the water supply seal.
Water supply seal provided with protrusion 142a at the lowermost end as shown
142 is provided at the bottom of the piston 119 to reduce the moving distance L.
Stroke amount can be further increased by setting
I can take it. This allows the two-step push button
Operability can be further improved. Here, a modified example of the control unit 105 will be described.
I do. Control with reference to FIGS. 27 (a) to 27 (c)
A first modification of the section will be described. As shown in the figure,
In the embodiment, a strong spring 125 is provided on the operation member 112.
Instead, a pipe-shaped elastic rubber 175 is provided. So
Other configurations are the same as those of the above-described embodiment. The elastic rubber 175 having a pipe shape is shown in FIG.
Water is being supplied by closing the leak hole of 7 (a) with a finger
And the weak spring is pressed by pushing one step in FIG. 27 (b).
As shown in the figure showing the state of spraying with contraction, the weak spring
In the amount of pushing force up to one-step pushing to compress 123
Compressed without deformation. Then, the two stages in FIG.
When water is being supplied by pushing it in,
The elastic rubber 175 is deformed because the strut 124 is in contact.
Then, the button portion 112a approaches the spring receiver 124. Thus, the elastic rubber is used instead of the strong spring.
The elastic rubber is deformed by two-step pushing.
Until it is shaped, the shape of the pipe is maintained
Because it changes for the first time with the stroke,
The feeling of hit is easily transmitted to the operator, and the operability is improved. The operating member 112 described above is used.
Air is supplied by closing the leak hole 121 with a finger,
Water is supplied by spraying and pushing in two stages, but this order is
It is not limited, and the leak hole 121 is closed with a finger.
Air supply, one-stage pushing water supply, two-stage pushing spray
There may be an order. Referring to FIGS. 28A to 28C, FIG.
A second modification of the control unit will be described. FIG.
The figure shows a state where water is being supplied by closing the hole with a finger.
As described above, in this embodiment, the slider 1 is attached to the mounting portion 151.
45 is fitted, and the piston 152 is fitted inside this
are doing. The slider 145 is opposed to the mounting portion 151.
Then, it can move up and down with a predetermined stroke. In addition,
The piston 152 is connected to the slider via the mounting portion 151.
It can move up and down with a stroke larger than 145. On the outer peripheral side of the slider 145, a strong spring 1 is provided.
53 are provided, and an upper flange portion 145a on the slider is provided.
, The upper end of the strong spring 153 contacts. This strong spring 15
The lower end of 3 is in contact with the mounting portion 151. That is, the slider 145 has the strong spring 1
53 is urged upward by the urging force.
A small diameter portion 145b is provided at the lower part of the
The lower flange portion 145c of the 45b projects into the mounting portion 151.
I'm hit. On the other hand, outside the strong spring 153, a weak spring is provided.
154 are provided. The upper end of this weak spring 154
Button provided on the flange on top of piston 152
The lower end of the weak spring 154 is in contact with the mounting portion 15a.
It is in contact with 1. That is, the piston 152 is
Is lifted upward by the urging force of the piston 15
The second step 152b is the lower flange of the slider 145.
145c. The state where the first step of FIG.
As shown in the drawing, the weak spring 154 is compressed to
2 is moved downward, the button portion 1 of the piston 152 is moved.
52a and upper flange 145a of slider 145 abut
I do. The state where the second step in FIG.
As shown in the figure, the button portion 152a contacts the slider 145.
While being in contact, the weak spring 154 is further compressed. this child
As a result, the slider 145 simultaneously presses the strong spring 153.
Shrink. At this time, the slider step 145d is
Hit 1 Thus, the two springs are independent.
And are less susceptible to each other's springs. Therefore, push
The difference between the one-step push and the two-step push
It is easy to convey the sense of switching the pipeline to the operator. Referring to FIGS. 29 (a) through 29 (c).
FIG. 29 illustrates a third modification of the control unit.
29A shows an air supply state, FIG. 29B shows a spray state, and FIG.
(C) is a figure which shows a water supply state. Operation of the endoscope 2 as shown in FIG.
The bottom of the side of the cylinder 160 attached to the part 7
Is provided with a communication portion 116 to the air supply conduit 103,
Slightly above it is a communication part to the air supply pipe line 107.
115 is provided, and further above the liquid supply supply line 109.
A communication section 113 is provided above the water supply line 1.
A communication section 114 is provided to the communication section 04. An operating member 161 is provided on the cylinder 160.
It is designed to be removable. This operation
The attachment member 162 is attached to the member 161.
The mounting member 162 is detachable from the cylinder 160.
It has become. The inner periphery of the mounting member 162 has a piston
163 is disposed and formed on the piston 163.
The mounting member 162 fits into the small diameter portion 164
I have. The leak hole 1 is located at the center of the piston 163.
65 penetrates. Around the upper end of the piston 163
Is provided with a flange portion 163a. In addition, the
A spring 166 is disposed on the stone 163, and
The upper end of the screw 166 contacts the flange portion 163a,
The lower end of the screw 166 is in contact with the mounting member 162. This
As a result, the piston 163 is attached with a spring 166.
It is urged upward by the force, and the step at the lower end of the small diameter portion 164
164a is in contact with the mounting member 162. This step
Upper O-ring on the outer periphery of piston 163 below 164a
167 is provided, and a middle O-ring 168 is provided therebelow.
The lower O-ring 169 is provided further below. In the leak state, the state shown in FIG.
Since the finger is removed from the state, the air supply pipe 107
Air that has entered through the communication portion 115 leaks through the leak hole 165.
Are coming out. In the air supply state shown in FIG.
The hole 165 is closed with a finger. Also, the upper O-ring 16
7 is located above the communication section 114 to the water supply pipeline 104.
And the middle O-ring 168 is connected to the communication portion 11 to the water supply pipeline 104.
4 and the communication part 113 to the liquid supply pipe 109
is there. The lower O-ring 169 is connected to the liquid supply pipe 1
09 and below the communication section 113 to the air supply pipe
The communication part 115 of the passage 107 and the communication part 1 of the air supply conduit 103
16 above. For this reason, the communicating portion of the air supply pipe 107
The air that has entered the cylinder 160 from
Leaks from the work hole 165, but the leak hole 165 is closed.
Between the piston 163 and the cylinder 160
Is sealed by the lower O-ring 169,
It exits from the communication section 116 to the airway 103. On the other hand, the communicating portion 11 of the liquid supply pipe 109
3 enters the water supply line 1 through the middle O-ring 168.
The route to the communication section 114 to 04 is cut off
Then, the lower O-ring 169 is used to
Is shut off. In the spray state shown in FIG.
The ton 163 is in a state where it is pushed in from the initial state. This
At the time, the middle O-ring 168 is connected to the liquid supply pipe 109.
It moves below the communication part 113. As a result, the communication of the water pipe 104
The upper part of the part 114 is fixed by the upper O-ring 167
The space between the cylinder 163 and the cylinder 160 is sealed,
The middle O-phosphorus is located below the communicating portion 115 of the air supply pipe 107.
Liquid supply pipe
The water supplied from the communication part 113 of the channel 109 is
It exits from the communication part 114 to 04. On the other hand, the lower O-ring 169 is
3 and the communication section 1 of the air supply pipe 107
Because it is located above 15, communication of the air supply pipe line 107
The air that enters from the section 115 is connected to the communication section 1 to the air supply line 103.
Exit from 16. Therefore, water and air spout at the same time
It becomes a spray state. In the water supply state shown in FIG.
The ton 163 is brought into the most depressed state. This and
The lower O-ring 169 is a communicating part of the air supply pipe 107.
Arranged between 115 and communication section 116 to air supply line 103
Is done. Therefore, the communication portion 11 of the air supply pipe 107
5 and the communication portion 116 of the air supply line 103 are shut off,
Also, the middle O-ring 168 is connected to the air supply pipe 1 in the same manner as described above.
07 is located above the communication portion 115 of the water supply line 1.
You lose your place without leaking to the 04 side. For this reason, the communication section of the liquid supply pipe 109
The water that has entered from 113 is the piston 163 and the cylinder 16
Enter the space between 0 and attach by upper O-ring 167
The water in the direction of the member 162 is shut off and the middle O-ring 168 is used.
Thus, the water flowing toward the air supply duct 103 is blocked. did
Accordingly, the liquid is supplied from the communication portion 113 of the liquid supply pipe 109.
The discharged water exits from the communication section 114 to the water supply pipeline 104.
Go. Therefore, the structure of the piston is extremely simple.
Because it can be used purely and a general-purpose O-ring can be used,
Can be kept very low. Also one spring
Only, the structure can be simplified and the accuracy can be improved
it can. Note that the present invention is limited to only the above-described embodiments.
The scope of the invention is not limited to the scope of the invention.
Various modifications can be made in the box. As described above, according to the present invention, simply
Three types such as air supply, water supply, and spray by one operation button
It becomes possible to control such operations.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG. 4 relate to a first embodiment of the present invention, and FIG. 1 is a diagram illustrating a configuration of an operation unit for explaining an endoscope system. FIG. 3 is a view for explaining the configuration of the operation unit. FIG. 3 is a view of the inside of the operation unit from the direction A in FIG. 2. FIG. 4 is a cross-sectional view of the vicinity of a cover member indicated by line BB in FIG. 5 and 6 relate to a second embodiment of the present invention, and FIG. 5 is a diagram illustrating another configuration of the operation unit. FIG. 6 is a diagram illustrating a knob provided on the operation unit. 8 relates to a third embodiment of the present invention, and FIG. 7 is a view showing another configuration of the operation unit. FIG. 8 is a view for explaining the configuration of a sub-operation unit in the gripping unit. FIG. 9 is a diagram illustrating a structure of a main bending portion and a sub-bending portion of the endoscope, and FIG. 9 is a diagram illustrating a main bending portion and a sub-bending portion constituting the bending portion of the endoscope. FIG. 11 is a view showing a relationship between a rear end node ring of the main bending portion and a front end node ring of the auxiliary bending portion. FIG. 11 is a cross-sectional view taken along line CC of FIG. 9; FIG. 12 is a cross-sectional view taken along line DD of FIG. 13 is a view for explaining a configuration example of a node ring of the main bending section. FIG. 14 is a view showing a positional relationship in an insertion direction of an upper wire extending from the main bending section and the auxiliary bending section. FIG. 16 is a view illustrating a configuration example. FIG. 16 is a view showing a state in which a main bending section and a sub-bending section are bent. FIG. 17 is a view of the bending state in FIG. 16 viewed from a direction E. FIG. FIG. 19 is a diagram illustrating another configuration example of the sub-bend portion. FIG. 20 is a diagram illustrating another configuration example of the sub-bend portion. FIG. 21 and FIG. FIG. 21 is a view for explaining air supply / water supply of the endoscope, and FIG. 21 is a view for explaining a pipe for air supply and water supply of the endoscope. FIG. 23 is a view for explaining the relationship between the operation and the air supply and water supply functions. FIG. 23 is a view for explaining details of the vicinity of a mounting portion of the operation member. FIG. 24 is a cross-sectional view taken along line EE in FIG. FIG. 26 is a diagram illustrating details of a piston bottom portion and an outer cylinder bottom portion of FIG. 26. FIG. 26 is a diagram illustrating a modification of the water supply seal. FIG. 27 is a diagram illustrating a first modification of the control unit. 29 illustrates a third modification of the control unit. [Description of References] 7... Operation unit 7 a... Gripping unit 21. Main plate 32. ... Up and down knob 35... Left and right knobs 36... Up and down chains 37... Left and right chains 38... Up and down connecting parts 39. 46... Sub-operation vertical chain 4 ... sub vertical connection part 48 ... auxiliary operating wire 72 ... main operation section 73 ... auxiliary operating unit

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Haruhiko Kaiya             2-43-2 Hatagaya, Shibuya-ku, Tokyo Ori             Inside of Opus Optical Co., Ltd. F-term (reference) 2H040 BA21 DA14 DA18 DA19 DA21                       DA22 DA57                 4C061 FF11 HH14 JJ06

Claims (1)

Claims: 1. An endoscope having an elongated insertion portion and an operation portion provided on a hand side of the insertion portion, wherein the endoscope is disposed on the operation portion and a first position from a normal position. An operation button that is moved to a second position via a position, and provided to a control unit of the operation button, and communicates with the outside through a leak hole provided in the operation button when the operation button is at a normal position. Means for feeding air into the air supply line when the leak hole is closed; and a control unit for the operation button, wherein when the operation button is moved to the first position, the insertion is performed. Means for sending air and liquid to the section, means provided in the control section of the operation button, means for sending liquid to the insertion section when the operation button is moved to the second position, An endoscope comprising: