JP2003265406A - Device for moving forward and backward endoscope therapy accessory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform the operation of moving forward and backward an end- therapy accessory, keeping the hand on an endoscope insertion portion to be held in simple constitution, to reduce the size, weight and cost of the device, and to improve the operability of an endoscope control section itself. <P>SOLUTION: This device 1 for moving forward and backward an endoscope therapy accessory is provided with a frame 31 freely attached and detached to and from an forceps opening 10 of the endoscope 30 having an end-therapy accessory insert pipe, and a guide 6. The device is further provided with a driving roller 2 and a non-driving roller 3 disposed near the forceps opening 10 to hold the end-therapy accessory 8 and simultaneously move forward and backward the end-therapy accessory 8 to be inserted in the forceps opening in both inserting and pull-out directions, at least one of the rollers being formed by an elastic body, a rotating part 4 connected to the driving roller 2, and a finger pad part 4 for operating the rotating part 4. Thus, the end-therapy accessory can be moved forward and backward, keeping the hand on the endoscope insertion portion to be held in simple constitution. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a method for controlling a body through an endoscope.
Processing of forceps, cartels, high-frequency knives, etc. inserted into the cavity
The endoscope treatment tool advance / retreat device for easily inserting and removing the device
In addition, the operability of the operator is improved with a particularly simple configuration and low cost.
The present invention relates to an endoscope treatment tool advancing and retracting device. 2. Description of the Related Art Conventionally, forceps, cartels, and high-frequency
When inserting a treatment tool such as a knife into a body cavity through an endoscope
Was inserted by hand by the surgeon.
If the endoscope is an
It takes a long time to insert the device, and the burden on patients and operators
If the insertion of the treatment tool is large,
Inconvenience such as that the sheath of the tool may be bent
was there. In view of the above, the above problem has been conventionally solved.
Many proposals have been made for this purpose.
For example, in the literature described in JP-A-56-8028,
There is an endoscope treatment tool insertion / extraction device that has been proposed more. [0003] The endoscopic treatment instrument insertion / removal device of this proposal includes an internal endoscope.
A main unit that can be attached to and detached from the treatment instrument
The insertion and removal of the treatment tool inserted into the treatment tool insertion slot
And a drive mechanism that drives the
It is. [0004] With the above configuration, the treatment tool can be automatically and quickly moved.
It can be inserted and removed securely, reducing the burden on patients and operators.
Trying to achieve a purpose that can be mitigated. [0005] However, the above-mentioned problems
With the proposal described in the conventional Japanese Patent Application Laid-Open No. 56-8028,
Means that the treatment tool insertion / extraction device is interposed between the treatment tool and the endoscope.
So that it is arranged on the sheath of the treatment instrument.
Therefore, the treatment tool advance / retreat operation by this treatment tool insertion / extraction device
Is performed using a hand different from the hand holding the endoscope operation unit.
It will be. Normally, the surgeon grasps the endoscope
The opposite hand is holding the endoscope insertion section,
To reach the affected part during endoscopic insertion
Releasing the hand that grips the entry part reduces the operability of the operator.
There is a possibility that it will be. [0006] Conventionally, the cost of the treatment tool advance / retreat device has been reduced.
It is desired that the system be implemented automatically.
DC motor and its rotation control
Electronic circuit section including a control circuit for controlling
With a drive transmission mechanism for transmitting the driving force to the
Movement mechanism, so that the treatment tool advance / retreat device itself
It is difficult to reduce cost and size, and
The device itself is heavy, and large devices may affect the operation of the endoscope insertion section.
Adversely affect the operability of the surgeon
There was also a fear that it might affect. Accordingly, the present invention has been made in view of the above problems.
Hand with a simple configuration to pinch the endoscope insertion section
It allows the treatment tool to move forward and backward without releasing
Enables the miniaturization, weight reduction and cost reduction of
Endoscope treatment that can improve the operability of the working unit itself
It is an object of the present invention to provide a tool advance / retreat device. The present invention is also applicable to a conventional endoscope.
Adaptable, small operating force, and coarse operating amount
Enables fine adjustment of the forward / backward movement of the treatment tool
Endoscope treatment tool advancement / retraction device that can improve
To provide for other purposes. [0009] An endoscope treatment tool according to the present invention is provided.
The retraction device is provided in an endoscope having a treatment instrument insertion conduit.
In the endoscope treatment tool advance / retreat device, place it near the treatment tool insertion port.
Is inserted directly into the treatment instrument insertion port in direct contact with the treatment instrument.
A treatment tool advancing / retreating member for advancing / retreating the treatment tool in both directions.
The treatment tool advance / retreat member is operated, and the treatment tool advance / retreat
It is connected to the member and arranged near the endoscope operation unit gripper.
The treatment tool advance / retreat member is operated with the finger of the hand holding the endoscope holding portion.
Operating members that can be made
It is. According to the present invention, the endoscope treatment instrument having the above-described configuration is provided.
A device for operating the treatment tool advance / retreat member in an advance / retreat device
And connected to the treatment tool advancing / retreating member and near the endoscope operation section gripping section.
Placed beside, with the fingers of the hand holding the endoscope gripper
By providing an operation member that can operate the treatment tool advance / retreat member
With a simple configuration, without releasing the hand that holds the endoscope insertion section
The treatment tool can be moved forward and backward, and the size of the device can be reduced.
, Lighter weight, and lower cost.
The operability of the body can be improved. Also, the endoscope
Mirror treatment device retraction device can be applied to conventional endoscopes
Treatment instrument with small operation force and coarse operation amount
Fine adjustment of the forward and backward movement of
It is also possible to make it. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. First Embodiment (Configuration) FIGS. 1 to 3 show an endoscope treatment instrument advancing / retreating device of the present invention.
1 shows a first embodiment of the present invention, and FIG.
FIG. 2 is a perspective view showing the basic structure of the apparatus, and FIG.
Diagram showing the state in which the tool advance / retreat device is mounted on the endoscope, FIG.
3 is also for explaining the operation of the endoscope treatment tool advancing / retreating device.
Therefore, FIG. 3A is a side view of the endoscope treatment tool advancing and retracting device,
FIG. 3B is a view when viewed from the arrow α direction in FIG.
FIG. Endoscope treatment tool advance / retreat device 1 of the present embodiment
As shown in FIG. 1, a driving tool as a treatment tool advance / retreat member
Roller 2, non-driving roller 3, and rotation as operation member
It is assumed that the part 4, the ubiquit 5 and the rollers 2, 3 are pivotally supported.
First, a frame 31 configured as a main body and the frame 31
The frame 31 is detachably attached to the endoscope 30 (see FIG. 2).
Guide 6 and the frame 31 integrally.
And an elastic plug 7 arranged and arranged.
You. The frame 31 is provided with the endoscope as described above.
It is a main body of the treatment tool advance / retreat device 1 and has, for example, a U-shape.
It is a formed frame. The bottom 3 of this frame 31
1a, an elastic plug into which the sheath 8a of the treatment instrument 8 can be inserted.
7 are integrally formed. Also, the bottom of the frame 31
The guide 6 is integrally formed below the surface 31.
You. The guide 6 is formed in, for example, a U-shape.
The endoscope treatment tool advance / retreat device 1 is attached to the endoscope 30.
When it is attached, it is inserted through the forceps port 10 of the endoscope 30.
The sheath 8a of the treated instrument 8 is protected from external contact.
Protect. The base end of the guide 6 has an R shape.
Formed in a shape bent upwards
I have. Thereby, the outer periphery of the endoscope 30 in the vicinity of the forceps port 10 is formed.
Part (endoscope operation part) can be reliably contacted.
Attachment of the endoscope treatment tool advance / retreat device 1 to the endoscope 30
The state is stabilized. The upper part of the side of the frame 31 is provided with a drive
Roller 2 and non-driving roller 3 are rotatably supported.
Have been. These rollers 2 and 3 are in contact with their peripheral surfaces.
And are arranged side by side. In addition, these
At least one of the rollers 2 and 3 is formed of an elastic body.
ing. The elastic body is, for example, a relatively soft composite.
What is necessary is just to form using a synthetic resin material etc.
Without damaging the sheath 8a and inserting the sheath 8a.
Using a material with characteristics that can be smoothly removed
It may be formed. The other roller is an elastic body
It may be composed of, but when composed of different materials,
As described above, the sheath 8a is not damaged and the sheath 8a is not damaged.
A material with characteristics that allows the insertion and withdrawal of a to be performed smoothly
What is necessary is just to form using it. The driving roller 2 is connected to the rotating section 4.
Rotating with the rotational power of the rotating unit 4
become. On the other hand, the non-driving roller 3 is rotatably supported by a shaft.
Have been. The rotating unit 4 is connected to the driving roller 2.
By transmitting the generated rotational power to the roller 3
To rotate and generate rotational power.
For this purpose, a plurality of rod-shaped
A ubiquit 5 composed of operation pins 5a is provided. sand
That is, it is necessary to rotate the ubiquit 5 with the operator's finger.
With this, the driving roller 2 is rotated through the rotating unit 4.
Can be inverted. The ubiquit 5 has a plurality of operation pins 5a.
It is attached to the rotating part 4 at an angle, and the surgeon
The operation is easy. The elastic plug 7 is made of an elastic material.
Thus, as described above, it is integrated with the bottom surface 31a of the frame 31.
And has an insertion hole near the center.
Have been. Through this insertion hole, the sheath 8a of the treatment instrument 8 is
The sheath 8a can be inserted.
To a predetermined position between the two rollers 2 and 3
Has a role. That is, the sheath 8a of the treatment instrument 8 is
At a predetermined position between the first roller 2 and the non-driving roller 3.
The drive roller 2 is
With the rotation of the rotation or the reverse rotation, the non-driving roller 2
By rotating together, the sandwiched sheath 8a is inserted.
Alternatively, an advance / retreat operation such as withdrawal is possible. The endoscope treatment tool of this embodiment is advanced and retracted.
In the installation, the operation force of the operator is directly applied to Ubiate 5
The moment arm a up to the rotation axis of the rotating part 4 is
Longer than the moment arm b (roller radius) of roller 2
It is configured to be. The endoscope treatment instrument advancing / retreating device 1 having the above configuration is illustrated in FIG.
As shown in FIG. 2, a conventional forceps port 10 of an endoscope 30 is
The bottom surface 31a of the frame 31
Inserting the treatment plug of the endoscope operation section 9 with the elastic plug 7 provided on the
It is attached to the forceps port 10 which is a port. That is, the forceps port 10
Can be attached with both the normal forceps stopper and the elastic stopper 7.
Can be used. It should be noted that the elastic plug 7 is provided with an endoscope treatment tool.
For attaching the device 1 to the forceps port 10 of the endoscope 30
Function not only as a part but also as a normal forceps stopper
I do. With regard to the orientation at the time of mounting,
When the guide 6 of the retraction device 1 is fixed to the endoscope operation unit 9
Orientation only, i.e. the base end is bent
Into an R shape that can be fitted to the outer peripheral portion of the endoscope operation section 9
Since it is formed, the endoscope treatment tool advance / retreat device 1 is reliably
It can be fixed to the endoscope operation section 9 in a fixed direction. In this case, the positional relationship at the time of mounting is shown in FIG.
As shown, the ubiquit 5 of the rotating unit 4 is
1 and the rollers 2 and 3
Is placed in a direction to enter the forceps port 10. But
Therefore, at the time of use, endoscopic treatment in such a positional relationship
The tool advance / retreat device 1 is attached to the endoscope 30 and can be used.
State. (Operation) Next, the endoscopic treatment of the present embodiment.
The operation of the tool advance / retreat device will be described in detail with reference to FIGS.
explain. Now, the inside of the endoscope 30 shown in FIG.
Using the endoscope treatment tool advance / retreat device 1, the treatment tool 8 is moved forward / backward.
And Umono. In this case, the operator operates the endoscope 30.
When holding the endoscope operation unit 9 with one hand,
Grasp the endoscope insertion part 12 with one hand, and
To make the endoscope end 13 reach the affected area
You. Thereafter, the surgeon once inserts the endoscope insertion portion 12
Release the grasping hand and insert the treatment tool tip 14 into the endoscope insertion section.
After inserting to the vicinity of the endoscope distal end 13 of the distal end portion of 12,
Insert the endoscope insertion part 12 again so that it can be easily treated.
The endoscope insertion section 12 is operated with the hand to be gripped. However, the position of the treatment tool is finely adjusted during the treatment.
Each time, release the hand holding the endoscope insertion section 12
The position of the endoscope tip 13 is redone each time
This means that work efficiency is very poor. For this reason,
Instruct the nurse to move the treatment tool 8 forward or backward, or
The endoscope insertion part 12 is held only during
There are not a few facilities that support it. Also, Japanese Patent Application Laid-Open No.
In the automatic treatment tool insertion / extraction device described in JP-A-8028, fine adjustment
In the end, manual operation using the hand holding the endoscope insertion section 12 is required.
Also, the operation of the automatic treatment instrument insertion / extraction device is also the endoscope insertion section
12 will be performed by hand. However, the endoscopic treatment of the present embodiment
The device can solve the above-mentioned problems.
Noh. In the present embodiment, the surgeon is
At the beginning or at the start of using the treatment tool 8,
The forceps stopper is attached to the endoscope advance / retreat device 1 as shown in FIG.
The endoscope 30 is attached to the forceps port 10 in the same manner. This forceps
The mouth 10 has a shape common to various types of endoscopes.
The endoscope advancing / retreating device 1 is a single kind of general-purpose endoscope.
It can be mounted on the mirror 30. The surgeon inserts the endoscope insertion section 12 at the beginning of the procedure.
Using the grasping hand, move the treatment instrument 8 to near the endoscope distal end 13.
After insertion, with the hand holding the endoscope insertion part 12
While operating the endoscope insertion section 12, hold the endoscope operation section 9
Rotate the endoscope treatment tool advancing / retreating device 1 with different fingers of the hand
The ubiquit 5 of the transfer unit 4 is operated. Then, when the ubiquit 5 is turned, the rotation of the rotating unit 4 is started.
The rolling force is transmitted to the driving roller 2 connected thereto.
The rotation of the sheath 8a sandwiched between the
The forward / backward force in the circumferential tangential direction is transmitted, and the sheath 8
a is further inserted. Also, reverse rotation of Ubiate 5
Thereby, the operation opposite to the operation at the time of insertion of the treatment tool 8 is performed.
Is performed, the sheath 8a of the treatment tool 8 is withdrawn.
Will be. In this case, the non-driving roller 3 includes a sheath
8a rotates in accordance with the advance and retreat of the
The force is smaller than the forward / backward force transmitted to the gear 8a. Also treatment
The sheath 8a of the tool 8 has various warps.
At least one of the moving roller 2 and the non-driving roller 3
Is an elastic body, the diameter of the sheath 8a of the treatment instrument 8 is
Even though the roller 2 (or roller 3), which is an elastic body,
And can be sandwiched between rollers 2 and 3
Can be inserted and withdrawn. Further, the endoscope treatment tool of this embodiment is advanced and retracted.
In the device 1, as shown in FIG.
Let the moment arm be a, and set the momentum of the driving roller 2
Moment arm b, moment arm a> moment
This satisfies the relationship of the arm b. to this
Thus, the operation amount by the ubiquit 5 as the operation means is H
Then, even when the operation amount H is large, FIG.
Movement of the treatment tool 8 (sheath 8a) as shown in FIG.
Since the distance h is small, the sheath 8a can be operated even if a coarse operation is performed.
Can be fine-tuned. In addition, moment
Arm a: light force due to leverage ratio of moment arm b
It is also possible to operate the treatment tool 8 (sheath 8a) with the amount.
You. Note that the endoscope treatment tool of this embodiment is advanced and retracted.
As shown in the above configuration, the device 1 is a small
-Operability of the endoscope operation unit 9 itself because it is a simple device
To perform the forward / backward movement of the treatment tool 8 without impairing
Is possible. (Effect) Therefore, according to this embodiment,
For example, with the above configuration, the hand holding the endoscope insertion portion 12
Without releasing the treatment tool, use the hand that grips the endoscope operation unit 9
8 can be easily performed. Also,
The device consists of a manual device that does not use a motor, etc.
Therefore, it is possible to reduce the size, weight, and cost of the device.
Operability of the endoscope operation unit itself can be improved.
You. Furthermore, the conventional endoscope treatment tool advance / retreat device 1 can
It can be adapted to many endoscopes, has small operation force, and
Allows fine adjustment of the advance / retreat movement of the treatment tool with one coarse operation amount
However, it is possible to improve the forward / backward operability. Second Embodiment: By the way, in the present invention,
In the endoscope treatment tool advance / retreat device, insertion / removal when the treatment tool 8 is directly sent
Without disturbing the insertion and removal of the treatment instrument
Improvements have been made to facilitate the retreat operation. This
Such an embodiment is shown in FIG. FIG. 4 shows the endoscope treatment tool advancing and retracting device of the present invention.
FIG. 4 shows a schematic configuration showing an embodiment of FIG.
(A) is a top view of the roller in a closed state, and (b) of FIG.
Is a top view in the open state, and FIG. 4C shows a link mechanism of the device.
It is an explanatory view for explaining. Note that FIG.
The same components as those of the endoscope treatment tool advancing / retreating device 1 of the embodiment are required.
Matters with the same reference numerals are used for
The description will be omitted, and only different portions will be described. (Structure) Advance / retreat of the endoscope treatment tool of this embodiment
The device is, as shown in FIG.
With rollers 2 and 3 connected by gears 15 and 16,
In both cases, a frame 17, which supports these rollers 2 and 3,
18 has a link mechanism rotatable around the point A1.
The feature is that it has been achieved. Specifically, the frames 17, 18 are
As shown in FIG. 4 (c), each is formed in a U-shape,
With the point A1 as a rotation axis, the frame 18
It has a ring mechanism that can rotate in the horizontal direction.
You. That is, the frame 18 is a frame on which the roller 2 is supported.
With respect to the horizontal direction of the frame 17,
It is movably mounted. Rollers 2 are provided at both ends of the frame 17.
A bearing portion 2a for supporting is provided.
The driving roller 2 is rotatably supported by the shaft 2a. Also
To support the roller 3 at both ends of the frame 18
Is provided, and the bearing 3a is not driven.
Roller 3 is rotatably supported. At the opposite end of the rotating part 4 of the rollers 2 and 3
Is a power transmission hand as shown in FIGS. 4 (a) and 4 (b).
For example, gears 15 and 16 are provided as steps.
These gears 15, 16 always mesh via point A1
It is configured as follows. That is, the gears 15 and 16 are
First gear portions 15a, 16a provided in the same direction as the peripheral surface of
And the first gear portions 15a and 16a,
Second gear portions 15b, 16b provided obliquely in the direction of the moving axis
When the roller 3 is closed.
The first gear portions 15a and 16a are, as shown in FIG.
Are engaged with each other and the roller 3 is opened, as shown in FIG.
As the second gear portions 15b and 16b mesh with each other,
The roller 2 and the roller 3 are always connected, and the roller 2
Is transmitted to the roller 3 side
I have. It should be noted that also in this embodiment,
Is a forceps as shown in FIG. 2 as in the first embodiment.
A hand that is attached to the opening 10 and holds the endoscope grip 11
Rotate Ubiate 5 with your finger. (Operation) In the present embodiment, the first
Operation is substantially the same as that of the endoscope treatment tool advance / retreat device of the first embodiment.
In addition to the procedure, the surgeon may
When inserting and removing the treatment tool 8 (sheath 8a) by hand
In addition, the frame 18 is spread around the point A1 to
The friction between the base 8a and the rollers 2 and 3 is eliminated.
The resistance can be reduced (see FIG. 4B). On the other hand, when the frame 18 is closed,
Is transmitted by the gears 15 and 16
Since the driving force is also transmitted to roller 3, both rollers 2 and 3
The sheath 8a can be given an advance / retreat force (see FIG.
4 (a)). In this case, also in the present embodiment,
At least one of rollers 2 and 3 as in the first embodiment.
Are made of an elastic body, so that various treatment tools 8
Close the frames 17 and 18 even for the diameter of the (sheath 8a).
In the event of kinking, the rollers can be kept parallel. to this
Thus, as in the first embodiment, it is possible to reliably and easily
The treatment instrument 8 (sheath 8a) can be inserted and removed
It is. Each of the rollers 2 and 3 is connected to the
1 gear section 15a, 16a, 2nd gear section 15b, 16b
Gears 15 and 16 are provided.
Therefore, even if the frame is opened and closed as described above,
Will not be disengaged. (Effect) Therefore, according to the present embodiment,
In this case, the same effects as those of the first embodiment can be obtained.
When the sheath 8a is manually fed, the space between the rollers 2 and 3 is widened.
Roller 3 without causing resistance
Can be inserted and removed smoothly. In addition, the endoscope treatment tool advance / retreat device
When moving the sheath 8a back and forth by
Since both 2 and 3 are driven together, compared to the first embodiment,
Is able to transmit the retreat power more reliably
There is. Third Embodiment: Endoscope treatment tool of the present invention
In the forward / backward device, an improvement different from that of the second embodiment is provided.
By doing so, insertion and removal of the treatment instrument 8 when directly sent
Without disturbing the insertion / removal force of the treatment instrument.
It can also be easily done. Figure such an embodiment
It is shown in FIG. FIG. 5 shows the endoscope treatment tool advancing / retreating device of the present invention.
FIG. 5 shows a schematic configuration showing the third embodiment,
(A) is a configuration perspective view showing the basic structure of the device, FIG.
5B is a view of the device when viewed from the direction of arrow β in FIG.
FIG. 5C is a configuration diagram showing a drive system of the device, and FIG.
2 shows a frame structure of the device when viewed from an arrow β direction.
It is a block diagram. FIG. 5 shows the first embodiment.
The same components as those of the endoscope treatment tool advance / retreat device 1 are the same.
The description of the configuration, operation, and effect is omitted by attaching one symbol,
Only different parts will be described. (Configuration) Advance / retreat of the endoscope treatment tool of the present embodiment
As shown in FIG. 5, the device is the same as that of the first embodiment.
In addition to the constituent elements of the device 1, the power transmission means such as a bell
A gear 19 which is a sun gear of a planetary gear mechanism;
The gear 21 which is a planetary gear of the planetary gear mechanism and the gear 20
Bearing 22 serving as a bearing, gear 21 and bearing of roller 3
Bearing 23 and a ring connecting the bearings 22 and 23
Frame 24 supporting the roller 24 and the link 24
Are provided. As shown in FIG.
The rotating shaft engaging portion 2A is formed as described above.
The portion 2A is adapted to engage with the belt 19.
You. On the other hand, the teeth on the base side of the roller 3
A wheel 21 is provided, and a bearing is provided near a rotation shaft of the gear 21.
23 are formed. In a predetermined position of the frame 25, a bearing
A gear 20 forming a shaft 22 is rotatably supported.
The 20 bearings 22 engage with the rotation shaft engaging portion 2A.
While engaging with the belt 19, the gear 20 itself is
It is arranged so as to mesh with the gear 21 of the roller 3. Further, as shown in FIG.
The roller 2 is rotatably supported at a predetermined position on the frame 25.
Have been. At the lower ends of both sides of the frame 25,
Link 24 rotates in the direction of rotation of the rollers 2 and 3 (arrows in FIG. 5C).
(The direction of the mark A).
The bearing 23 is provided at the base end.
The roller 23 is supported by the bearing 23.
Become. That is, the upper part of the side surface of the frame 25 on the roller 3 side
The link 24 is centered on the bearing 22 as shown by an arrow in FIG.
It is cut out so as to be rotatable in the direction of the mark A.
When the sheath 8a is inserted, the link 24 is
(C) is placed at the position indicated by the solid line.
The lock 24 is arranged at the position indicated by the diagonal lines in FIG.
It turns like this. The drive system of the device is shown in FIG.
As shown in (b), the rotation bearing 2 of the driving roller 2
A, the rotation of the roller 2A
The driving force is transmitted to the gear 20 via the bearing 22, and the tooth
Since the wheel 20 meshes with the gear 21, the rotation of the roller 2
The driving force is transmitted to the non-driving roller 3 side.
ing. The transmission of the rotational driving force of the roller 2 is performed by the treatment tool 8.
Irrespective of the rotation of the link 24 when the
Can be transmitted to the roller 3 side. It should be noted that, in this embodiment as well,
Is a forceps as shown in FIG. 2 as in the first embodiment.
A hand that is attached to the opening 10 and holds the endoscope grip 11
Rotate Ubiate 5 with your finger. (Operation) In the present embodiment, the
Operation is substantially the same as that of the endoscope treatment tool advance / retreat device of the first embodiment.
In addition to the procedure, the surgeon may
When inserting and removing the sheath 8a manually, the link 24
Is spread around the bearing 22 so that the sheath 8a and the
To eliminate friction with rollers 2 and 3 and reduce manual feed resistance.
(See FIG. 5C). On the other hand, the link 24 is closed to reduce the treatment tool advance / retreat force.
When transmitting, the driving force of the roller 2 is the belt 19, the gear
The roller 20 is also transmitted to the roller 3 by the rollers 20 and 21.
In both cases, the advancing / retreating force is applied to the treatment tool 8 (sheath 8a).
Can be given. When the link 24 is opened and closed, the gear 21
Revolves around gear 20 while rotating (with planetary gear mechanism
Gears 20 and 21 mesh by opening and closing the link.
It will not go away. (Effect) Therefore, according to the present embodiment,
In this case, the same effects as those of the first embodiment can be obtained.
Then, the sheath 8a is moved by the endoscope treatment tool advancing / retreating device 1.
When moving forward and backward, the two rollers 2 and 3 are driven together.
Therefore, the advancing / retreating force can be more reliably achieved than in the first embodiment.
Can tell. Also, when feeding the sheath 8a manually
The link 24 is rotated to widen the gap between the rollers 2 and 3.
Rollers 2 and 3 become resistance
There is an effect that it can be smoothly inserted and removed without any trouble. Fourth Embodiment: By the way, in the present invention,
In the endoscope treatment tool advance / retreat device, the treatment tool 8 is inserted into and removed from the endoscope itself.
Resistance by rollers 2 and 3 against manual insertion and removal when
It is also possible to smooth out large insertion and removal by reducing the resistance
is there. Such an embodiment is shown in FIGS. FIGS. 6 to 8 show advance / retreat of the endoscope treatment tool of the present invention.
FIG. 6 shows a fourth embodiment of the device, and FIG.
FIG. 6A is a cross-sectional view of the vicinity of each roller showing the structure, and FIG.
FIG. 6 shows a state in which the gear roller 2 is rotated in a predetermined phase.
(B) shows a state where the missing roller 2 is rotated in another phase.
are doing. FIG. 7 shows the roller 2 formed in an eccentric circular shape.
FIG. 8 is a sectional view showing the vicinity of each roller of
Each roller of the apparatus when the surface roughness is changed to 2
FIG. 8A is a sectional view of the vicinity, and FIG.
FIG. 8 (b) shows a state in which the outer peripheral surface of
The outer peripheral surface of the roller 2 having a large friction coefficient came into contact with the treatment tool
Each state is shown. 6 to FIG.
The same as the endoscope treatment tool advance / retreat device 1 of the first embodiment.
The same reference numerals are used for the components,
The description of the effects will be omitted, and only different portions will be described. (Structure) Advance / retreat of the endoscope treatment tool of the present embodiment
The overall configuration of the device 1 is substantially the same as that of the first embodiment.
As described above, handing in when the treatment instrument 8 is inserted into and removed from the endoscope itself
To reduce the resistance of rollers 2 and 3
Has been improved for smooth insertion and removal.
You. Specifically, in the present embodiment, the endoscope
Cross section of drive roller 2 mounted on treatment tool advance / retreat device 1
However, as shown in FIG.
I have. That is, the roller 2 is moved to the first position as shown in FIG.
In phase 1, the outer peripheral surface of the roller 2 and the sheath
The contact state with the sheath 8a becomes unstable.
As shown in FIG. 6 (b), the friction of
In the second phase, the other outer peripheral surface of the roller 2 and the sheath 8a
The contact state with the sheath 8a and the
The relationship with the roller 2 is substantially the same as in the first embodiment. It should be noted that, also in the present embodiment,
Is a forceps as shown in FIG. 2 as in the first embodiment.
A hand that is attached to the opening 10 and holds the endoscope grip 11
Rotate Ubiate 5 with your finger. In the present embodiment, as shown in FIG.
When the cross-sectional shape of the roller 2 is an eccentric circle, as shown in FIG.
To change the coefficient of friction by changing the surface roughness of the roller 2.
The following functions and effects can be obtained
it can. When the cross-sectional shape of the roller 2 is configured as an eccentric circle,
In this case, as shown in FIG.
(See FIG. 6) Rotating shaft 2b eccentric by predetermined dimension l
The roller 2 is configured to form the roller 1. This allows
When the roller 2 has the phase shown in FIG.
The relationship with the roller 2 is the same as that of the first embodiment.
If the phase is changed by 180 degrees, the sheath
The friction between the roller 8a and the roller 2 is reduced. In addition, this predetermined
The dimension l is such that an optimal friction between the roller 2 and the treatment tool 8 can be obtained.
May be changed as appropriate. Further, by changing the surface roughness of the roller 2, the friction
In the case where the number is changed, as shown in FIG.
The area of approximately 3/4 of the entire outer peripheral surface of the roller 2 has a large friction coefficient.
And the remaining 1/4 area is ground.
It is made of a material with a small friction coefficient. This ratio is
The optimal roller 2 and treatment tool 8 are not limited to
So that it can be changed appropriately so as to obtain friction with
You may. That is, the roller 2 is moved to the position shown in FIG.
In the phase of 1, the outer peripheral surface of the roller 2 having a small friction coefficient is
Since the sheath 8a comes into contact with the sheath 8a,
The rubbing becomes smaller, while the second rub as shown in FIG.
In the phase, the outer peripheral surface of the roller 2 having a large friction coefficient and the sheath
8a comes into contact with it, so the coefficient of friction increases.
The relationship between the roller 8a and the roller 2 is substantially the same as that of the first embodiment.
It will be similar. (Operation) In the present embodiment, the first
Operation is substantially the same as that of the endoscope treatment tool advance / retreat device of the first embodiment.
In addition, the surgeon must perform the procedure at the beginning (or after) the procedure.
The roller 8 is used when feeding the device 8 (sheath (8a) manually).
By adjusting the phases of the two as shown in FIG.
Eliminates friction between the sheath 8a and the roller 2 and reduces manual feed resistance
Can be reduced. On the other hand, the endoscope treatment tool advance / retreat device 1
In the case of moving the endoscope 8a back and forth,
If the rotating part 4 of the reciprocating device 1 is rotated, a part of the
However, as in the first embodiment, the treatment tool advances and retreats.
I can convey the power. For this reason, the second and third
The roller 2 and the treatment tool 8 can be connected with less operation than in the embodiment.
Friction can be adjusted. (Effect) Therefore, according to the present embodiment,
In this case, the same effects as those of the first embodiment can be obtained.
In addition, when feeding the sheath 8a manually, the phase of the roller 2 is illustrated.
6A, the roller 2 has a resistance.
The endoscope can be inserted and removed smoothly without
When the sheath 8a is advanced and retracted using the device 1
Is the same as in the first embodiment if the roller 2 is rotated.
As described above, the advance / retreat force is transmitted to the treatment tool 8 and
Actions can be taken. Further, compared to the second and third embodiments,
With a simple operation, the sheath 8a can be manually fed and the endoscope processing can be performed.
It is possible to switch between forward and backward by the fixture forward and backward device 1
Has the effect of Fifth Embodiment: Endoscope treatment tool of the present invention
In the retraction device, the treatment tool always keeps the roller at a certain position.
By configuring to insert and remove, unnecessary insertion and removal force is required.
It is also possible to insert and remove the treatment tool without need. This
Such an embodiment is shown in FIGS. FIGS. 9 and 10 show an endoscope treatment tool according to the present invention.
FIG. 9 shows a fifth embodiment of the retraction device, and FIG.
FIG. 10 is a cross-sectional view of a constricted shape roller.
Sectional view of a roller with soft elasticity toward the center
It is. 9 and 10 show the first embodiment.
The same components as the endoscope treatment tool advance / retreat device 1
Is denoted by the same reference numeral, and the description of the configuration, operation, and effect is omitted.
Only the different parts will be described. (Structure) Advance / retreat of the endoscope treatment tool of the present embodiment
The overall configuration of the device 1 is substantially the same as that of the first embodiment.
In this embodiment, the center of the rollers 2 and 3 is
Next, as shown in FIG.
6 is provided. Sandals
In the center of the rollers 2 and 3, the low
Since the amount of elastic deformation of the rubbers 2 and 3 is small, between the sheath 8a
Less pressure. As a result, the sheath 8a is always
Inserting and removing at a certain position between two and three
With a low coefficient of friction with rollers 2 and 3
It can be easily inserted and removed. The other parts are the same as those in the first embodiment.
In the same manner as in the first embodiment,
2 and the endoscope grip 11
Rotate Ubiate 5 with the fingers of the hand holding. In the present embodiment, as shown in FIG.
As described above, the rollers 2 and 3 are made by mixing materials having different elastic coefficients.
To gradually soften toward the center of the roller
To obtain the following functions and effects
Can be. (Operation) In the present embodiment, the first
Operation is substantially the same as that of the endoscope treatment tool advance / retreat device of the first embodiment.
In addition, the surgeon uses the device shown in the first embodiment.
When moving the sheath 8a forward and backward, the sheath 8a and the roller
Depending on the angle between 2 and 3, the sheath 8a gradually rolls
After moving to the end of a few, roller 2
3, but in this embodiment, the roller
Even if the angle between 2, 3 and the sheath 8a is slightly blurred,
Difference in compression due to positional relationship between rollers 2 and 3 and sheath 8a
The sheath 8a is guided to the center of the roller, and the forceps
The sheath 8a is arranged at a substantially constant angle with respect to the mouth 10.
Will be. For this reason, the treatment tool advances and retreats with a stable operation force.
Can be performed, and the sheaths 8a can be
Does not come off. On the other hand, except for the center of the roller,
Since the roller 3 is in contact, the driving force of the roller 2 is surely low.
The rollers 2 and 3 are also transmitted to the sheath 8
a will surely be given forward and backward power. Note that the configuration of the rollers 2 and 3 shown in FIG.
In this case, the operation will be the same as described above. (Effect) Therefore, according to the present embodiment,
In this case, the same effects as those of the first embodiment can be obtained.
In addition, the sheath 8a is moved from the rollers 2 and 3 during the treatment tool advance / retreat operation.
It does not come off. In addition, the above-mentioned or today's treatment instrument advance / retreat device
When the sheath 8a is advanced and retracted by the
Since both 2 and 3 are driven together, compared to the first embodiment,
Is able to transmit the retreat power more reliably
There is. The present invention relates to the first to fifth embodiments.
It is not limited to the form,
Combinations and applications also apply. The first to fifth embodiments according to the present invention
In the embodiment, a manually operated endoscope treatment tool advance / retreat device 1 is provided.
However, if necessary, the rotation drive is transmitted to the rotation unit 4.
Automatic motor that controls the motor
It may be configured as a typical endoscope treatment tool advance / retreat device. [Supplementary Note] (Supplementary Note 1) Provided in an endoscope having a treatment instrument insertion pipe
Endoscope treatment tool advance / retreat device near the treatment tool insertion port
And placed directly in contact with the treatment tool and inserted into the treatment tool insertion port.
Treatment device advancement / retreat member for moving the treatment device to be inserted / removed in both directions
Operating the treatment tool advancing / retreating member, wherein the treatment tool
It is connected to the advance / retreat member and arranged near the endoscope operation unit grip,
The treatment tool advancing / retreating member with a finger of the hand holding the endoscope holding portion
And an operation member that can operate the
Endoscope treatment tool advance / retreat device. (Supplementary Note 2) The endoscope treatment tool advance / retreat device
Is removable near the treatment tool insertion port of the operation section of the endoscope.
3. The endoscope treatment tool advancing and retracting device according to Appendix 1. (Supplementary Note 3) The treatment tool advancing / retreating member has two
It consists of a rotating body, and the treatment tool is sandwiched between the two rotating bodies.
Operating at least one of the rotating bodies
Driven by and rotated by its circumferential tangent
Supplementary note 1 characterized in that the treatment tool can be advanced and retracted in the direction.
5. The endoscope treatment tool advancing / retreating device according to claim 1. (Supplementary Note 4) Moment of the operating member
(From the point of force to the fulcrum)
Longer than the arm (from the point of application to the fulcrum)
4. The endoscope treatment tool advancing / retreating device according to claim 3, characterized in that: (Supplementary Note 5) Operate both of the two rotating bodies
The device is driven by operation of a member.
Endoscope treatment tool advance / retreat device. (Supplementary Note 6) The distance between the two rotating bodies is
The device according to claim 3, further comprising adjusting means.
Endoscope treatment tool advance / retreat device. (Supplementary Note 7) Forming the axes of the two rotating bodies
The device has a means for adjusting the angle.
Endoscope treatment tool advance / retreat device. (Supplementary Note 8) Provided on the two rotating bodies
Gears that transmit driving force from one rotating body to the other rotating body
Power transmission means with a part of the teeth in the thickness direction
Endoscope treatment tool according to Supplementary Note 7, characterized by having
Retraction device. (Supplementary Note 9) The one rotating body is connected to the other rotating body.
A driving means for transmitting a driving force to the rotating body;
The stage is provided with a planetary gear mechanism on the one rotating body, and the other
Power transmission means between the rotating body of the planet and the sun gear of the planetary gear mechanism
6. The endoscope treatment tool according to claim 6, wherein
Retraction device. (Supplementary Note 10) According to the phase of the rotating body
An attachment characterized by changing the frictional force applied to the treatment tool
4. The endoscope treatment tool advancing / retreating device according to claim 3. (Supplementary Note 11) When the treatment tool advances or retreats,
Is a guiding hand that is guided to an arbitrary position in the axial direction of the rotating body.
The endoscopic procedure according to Appendix 3, wherein a step is provided.
Equipment advance / retreat device. As described above, according to the present invention,
Easy treatment without releasing the hand holding the endoscope insertion part with a simple configuration
Tool can be moved forward and backward, and the device can be made smaller and lighter.
Operation of the endoscope operation section itself
Endoscope treatment tool advance / retreat device that can improve workability
Can be provided. Also, in a conventional endoscope,
Adaptable, small operating force, and coarse operating amount
Enables fine adjustment of the forward / backward movement of the treatment tool
Endoscope treatment tool advancement / retraction device that can improve
Can be offered.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration perspective view showing a first embodiment of an endoscope treatment tool advance / retreat device of the present invention, and showing a basic structure of the endoscope treatment tool advance / retreat device. FIG. 2 is a configuration diagram showing a state in which the endoscope treatment tool advancing / retreating device is mounted on an endoscope. FIG. 3 is an explanatory diagram for explaining the operation of the endoscope treatment instrument advancing and retracting device. FIG. 4 is a top view showing a second embodiment of the endoscope treatment tool advancing and retracting device of the present invention, and showing a schematic configuration of the device. FIG. 5 is a configuration diagram showing a third embodiment of the endoscope treatment tool advancing / retreating device of the present invention, and a schematic configuration of the device. FIG. 6 is a sectional view of the vicinity of each roller showing a fourth embodiment of the endoscope treatment tool advancing and retracting device of the present invention, showing a basic structure of the device. FIG. 7 is a cross-sectional view showing the vicinity of each roller of the device when the roller is formed in an eccentric circular shape. FIG. 8 is a cross-sectional view of the vicinity of each roller of the apparatus when the surface roughness of the roller is changed. FIG. 9 is a cross-sectional view of a constricted roller mounted on the endoscope treatment tool advancing and retracting device according to a fifth embodiment of the present invention. FIG. 10 is a cross-sectional view of a roller configured to have a soft elasticity toward a roller center direction. [Description of Signs] 1 ... Endoscope treatment instrument advance / retreat device, 2 ... Driving roller, 2A ... Rotary shaft engaging member, 3 ... Non-driving roller, 4 ... Rotating section, 5 ... Ubiate, 5a ... Operation Pin, 6 Guide, 7 Elastic plug, 8 Treatment tool, 8a Sheath, 9 Endoscope operating section, 10 Forceps port, 11 Endoscope grip section, 12 Endoscope insertion section, Reference numeral 13: Endoscope tip, 14: Treatment tool tip, 15, 16: Gear, 15a, 16a: First gear, 15b, 16b: Second gear, 17, 18, 25, 31: Frame, 19: Belt , 20, 21 ... gears, 22, 23 ... bearings, 24 ... links, 26 ... cracks, 31a ... bottom surface (frame).

Claims (1)

Claims: 1. An endoscope treatment tool advancing / retreating device provided in an endoscope having a treatment tool insertion conduit, wherein the device is disposed near a treatment tool insertion port, and is directly in contact with the treatment tool. A treatment tool advancing / retreating member for advancing / retreating the treatment tool inserted into the treatment tool insertion port in both directions of insertion and removal; and operating the treatment tool advancing / retreating member. An operating member disposed and capable of operating the treatment tool advancing / retreating member with a finger of the hand holding the endoscope gripping portion, comprising: an endoscope treatment tool advancing / retreating device.