JP3387357B2 - Endoscope pipeline cleaning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope conduit which is inserted into a conduit such as a treatment instrument insertion channel provided in an endoscope and is cleaned by rubbing the inner surface of the conduit. The present invention relates to a cleaning device.

[0002]

2. Description of the Related Art Since an endoscope is inserted into a human body or other body cavity, it must be cleaned every time it is used. The endoscope is provided with an insertion portion for insertion into a body cavity, etc., which is continuously provided to a main body operation portion that an operator or the like holds and operates by hand.
The main body is generally constructed by pulling out a universal cord for detachably connecting to a device such as a light source device. Of the endoscopes, only the insertion part is actually inserted into the body cavity, but since the hand touching the insertion part may come into contact with the main body operation part or the universal cord, etc. The cleaning performed is performed not only by inserting the insertion portion, but also by immersing the entire endoscope including the main body operation portion and the universal cord in a chemical solution or the like.

Here, the endoscope is provided with an illuminating means and an observing means at the tip of its insertion portion, and in addition to these, a plurality of conduits are provided. For example, a treatment instrument insertion channel through which forceps and other treatment instruments are inserted is provided in order to treat the affected area in the body cavity. This treatment instrument insertion channel is a conduit from the opening provided near the site where the observation means is provided at the distal end of the insertion section to the treatment instrument introduction section provided near the continuous section to the insertion section in the main body operation section The operator inserts the treatment tool from the treatment tool introducing portion provided in the main body operating portion and projects it from the opening at the tip of the insertion portion to perform the required treatment.

Further, since the observation window constituting the observation means may be contaminated by dirt such as body fluid, a cleaning liquid or a pressurizing fluid is used as a cleaning fluid in the observation window in order to secure an observation field of view. A cleaning nozzle for supplying air is provided. A liquid supply line and an air supply line are provided in the insertion portion in order to supply the cleaning liquid and the pressurized air to the cleaning nozzle.
The liquid supply line and the air supply line extend from the insertion part to the universal cord through the main body operation part, and can be detachably attached to the liquid supply pipe and the air supply pipe at the connector part provided at the tip of the universal cord. It is supposed to be connected. Although the liquid supply pipe and the air supply pipe can be configured as separate pipes, since the liquid supply and the air supply are not performed at the same time, the liquid supply pipe and the air supply pipe are merged in the insertion portion. Thus, there is no fluid line, and this fluid line is connected to the cleaning nozzle.

Further, a suction line is provided for removing dirt such as body fluid in the body cavity. A drive source and a pipe from a suction tank are connected to the suction pipe line, and the pipe is connected by a connector portion provided at the tip of the universal cord. Further, from the viewpoint of reducing the diameter of the insertion portion, it is general that the above-mentioned treatment instrument insertion channel is commonly used as the suction passage without providing an independent suction pipe line in this insertion portion. Therefore, the suction conduit extends from the connector portion of the universal cord into the main body operation portion and joins the treatment instrument insertion channel in the vicinity of the connection position of the treatment instrument insertion channel to the treatment instrument introduction portion.

As described above, the endoscope is provided with a number of ducts, but the treatment instrument insertion channel is used to insert and remove the treatment instrument, and thus is contaminated by the treatment. The treatment tool may come into contact with the inner surface of the treatment tool insertion channel and stain the inner surface of the treatment tool insertion channel. In addition, when a body fluid or the like is sucked, the treatment instrument insertion channel and the suction conduit forming the suction path are significantly contaminated. Furthermore, since the washing nozzle is also opened in the body cavity, there is a risk that the fluid conduit connected to this washing nozzle and the interiors of the liquid supply conduit and the air supply conduit that join the fluid conduit are also contaminated. Therefore, when cleaning the endoscope, it is necessary to clean not only the outer surface of the entire body but also the inside of these conduits. For this reason, conventionally, using a cleaning brush provided with a brush at the tip of a flexible long shaft portion, while inserting the cleaning brush into each of the above-mentioned conduits, while circulating the cleaning liquid, The inner surface of them is rubbed to remove dirt.

[0007]

By the way, in cleaning the pipeline using the cleaning brush, the inside cannot be completely cleaned only by pushing the brush into the pipeline. When the brush is operated so as to be inserted into the pipe line while being swung back and forth or rotated, the brush can be effectively rubbed against the inner surface of the pipe line and can be effectively cleaned. However, since the conduit provided in the endoscope is a long thin tube, when the brush is inserted to the inner depth, the flexible shaft is moved back and forth,
Even if it is rotated, the movement cannot be accurately transmitted to the part of the brush provided at the tip. Therefore,
Cleaning becomes more difficult as you go deeper into the pipeline, and to perform a thorough cleaning, insert a brush from one side of the pipeline, clean it, and then insert a brush again from the opposite side of the pipeline. There is a problem in that the work of cleaning the pipeline is extremely troublesome because it must be cleaned.

The present invention has been made in view of the above points, and an object of the present invention is to efficiently perform rubbing with a brush over the entire length of a pipe line.
It is to be able to easily and completely clean the inside of the pipeline.

[0009]

In order to achieve the above-mentioned object, a conduit cleaning apparatus according to the present invention is to clean an inner surface of a conduit of an endoscope by rubbing it. , Insert the rotation transmission means into the flexible tube, and rotate it at the base end.
A flexible shaft to which the moving means is connected, and the tip of the rotation transmitting means
The hard ring that is connected to the
And a scrubbing cleaning tool attached to the connecting cylinder consisting of
Fitting the connecting cylinder into the hard ring in a tight fit.
The gap between them is sealed by the
A chuck that detachably connects the connecting cylinder to the tip of the step.
A member is provided, and the rotation is transmitted through this chuck member.
The feature is that the means and the rubbing cleaning tool are connected so as to rotate integrally .

Here, when the conduit provided in the endoscope is bent, the rotation transmitting member must be bendable and must efficiently transmit rotation. To this end, the rotation transmitting member is constructed as a flexible shaft that bends in any direction along the conduit. The flexible shaft may be formed by winding a metal wire rod in the form of a close contact coil. As the scrubbing cleaning tool, a scrubber that can effectively scrub against the inner surface of the conduit is used, but the scrubbing cleaning tool can be constituted by, for example, a brush or a sponge. The scrubbing cleaning tool is a consumable item, and therefore the scrubbing cleaning tool is preferably configured to be detachably connected to the rotation transmitting member. For example, if a chuck member is connected to the tip of a flexible shaft that constitutes the rotation transmitting member and the rubbing cleaning tool is detachably connected to this chuck member, the rubbing cleaning tool can be easily replaced. become able to.

[0011]

DETAILED DESCRIPTION OF THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. Thus, FIG. 1 shows the structure of the conduit of the endoscope. In the figure, 1 is a main body operating portion, 2 is an insertion portion connected to the main body operating portion 1, and 3 is a universal cord. The universal cord 3 is detachably connected to the processor in addition to the light source device when the endoscope is configured as a light source device or an electronic endoscope. Therefore, the tip of the universal cord 3 is a connector. It is a part 3a.

An opening for leading out the treatment instrument is provided at the tip of the insertion portion 2, and a treatment instrument insertion channel 4 is connected to this opening. Further, the main body operation unit 1 is provided with a treatment instrument introducing section 5, and the treatment instrument insertion channel 4 is provided.
Extends from inside the insertion section 2 to the main body operation section 1, and its end is connected to the treatment instrument introducing section 5. A suction conduit 6 is connected to a position in the vicinity of a portion where the treatment tool insertion channel 4 is connected to the treatment tool introducing portion 5, and the suction conduit 6 extends from the main body operating portion 1 into the universal cord 3. And is connected to the suction pipe connecting portion 6a provided in the connector portion 3a. Further, a cleaning nozzle 7 is provided at the tip of the insertion portion 2, and a fluid pipe 8 is connected to the cleaning nozzle 7. The fluid pipe 8 is provided in the middle of the insertion portion 2. 9 and the air supply line 10. The liquid feeding conduit 9 and the air feeding conduit 10 extend from the insertion portion 2 through the main body operating portion 1 into the universal cord 3, and the liquid feeding pipe connection provided in the connector portion 3a at the tip of the universal cord 3 is connected. It is connected to the portion 9a and the air supply pipe connecting portion 10a. In this way, the suction pipe line 6, the liquid supply pipe line 9 and the air supply pipe line 10 which require pipe connections are connected to the connector portion 3 of the universal cord 3.
The extension to a prevents the connected pipe from interfering with the operation when the operator holds the main body operation unit 1 to perform the operation.

In order to clean the inside of the treatment instrument insertion channel 4, the suction conduit 6, the fluid conduit 8, the liquid supply conduit 9 and the air supply conduit 10, the conduit cleaning device 20 shown in FIG. 2 is used. . Here, it is assumed that the conduit cleaning device 20 is configured to clean the treatment instrument insertion channel 4 in the conduit of the endoscope. However, this is an example,
If the size and shape are changed, it can also be used for cleaning other pipelines such as the suction pipeline 6, the fluid pipeline 8, the liquid feeding pipeline 9 and the air feeding pipeline 10.

The conduit cleaning device 20 comprises a cleaning tool unit 21, a flexible shaft 22, and a drive unit 23 from the tip side. The cleaning tool unit 21 is, as shown in FIG.
The brush main body 24 is configured by implanting a large number of brush wire bodies on a support shaft having a predetermined length, and is composed of a brush main body 24 that constitutes a scrubbing cleaning tool and a cup-shaped connecting tubular body 25. The base end portion of the support shaft is connected to the connecting tubular body 25. The support shaft and the brush wire that constitute the brush main body 24 have elasticity and have a predetermined waist, and the connecting cylinder 25 is made of an elastic member such as rubber. The connecting plate 26 is provided in the direction perpendicular to the axis of the cleaning tool unit 21.

As shown in FIG. 4, the flexible shaft 22 is constructed by inserting a flexible shaft 28 as a rotation transmitting member into a flexible tube 27 as an outer body. The flexible shaft 28 is composed of a close contact coil formed by winding an elastic metal wire in a close contact state, and is bent in an arbitrary direction. Then, the flexible shaft 28 is attached to the flexible tube 2.
When the base end side is rotated around the axis in a state where it is inserted in 7, it becomes possible to transmit the rotational force to the tip.
Here, the flexible shaft 28 is preferably formed of a double contact coil as shown in the figure in order to transmit the rotation of the flexible shaft 28 more efficiently.

The tip of the flexible shaft 22 is the cleaning tool unit 21.
Is a detachable connecting portion, and the connecting portion has a hard ring member 29 connected to the tip of the flexible shaft 28. The hard ring member 29 is a flexible tube. A hard ring member 30 fitted to the tip of 27 is fitted, and a seal member 31 is interposed between these hard ring members 29 and 30. Therefore, when the flexible shaft 28 rotates, the rigid ring member 29 connected to it and the rigid ring member 30 on the flexible tube 27 side slide. A chuck member 34 configured by connecting the pair of chuck claws 32, 32 to the support shaft 33 is provided at a position inside the hard ring member 29.

Chuck claw 3 constituting the chuck member 34
The first and second actuating surfaces 32a, 32a, which are inclined in a direction in which they are spaced apart from each other, are provided on the tip end sides of the reference numerals 2, 32, and are inclined in a direction in which the rear surface portion on the base end side is narrowed toward the base end side. The second operating surfaces 32b and 32b are formed. With the chuck member 34 protruding from the hard ring member 29, as shown in FIG.
Is connected to the tip of the flexible shaft 22, the connecting cylinder 2
The first operating surfaces 32a, 32a of the chuck claws 32, 32 are pushed by the connecting plate 26 of No. 5 and are displaced to the chuck open state, so that the connecting plate 26 enters between them. In this state, the chuck member 34 is attached to the hard ring member 29.
The chuck claw 3
By sliding the second operating surfaces 32b, 32b of 2, 32 along the inner peripheral edge of the distal end of the hard ring member 29, FIG.
As shown in FIG. 5, the chuck claws 32, 32 are closed to be in the chuck state.

In order to displace the chuck member 34 between the chuck open state and the chuck state, the support shaft 33 is connected to a U-shaped holding member 36 connected to the operation wire 35. The chuck member 34 can be moved by a push-pull operation. The operation wire 35 is inserted through the flexible shaft 28.

The proximal end of the flexible shaft 22 is a connector 37. The connector 37 has a tubular body 38 to which the flexible tube 27 of the flexible shaft 22 is connected, and a rotary shaft 39 is rotatably provided in the housing 38.
A connecting body 40 connected to the flexible shaft 28 is fitted and fixed to the rotating shaft 39. Therefore, the flexible shaft 28, the connecting body 40, and the rotary shaft 39 rotate integrally. The rotary shaft 39 protrudes from the cylindrical body 38 by a predetermined length, and a C ring 41 is fitted to an intermediate portion of the protruding portion.

Here, as shown in FIG. 7, the rotating shaft 39
A through hole with a step is formed in the state of penetrating in the axial direction, and a portion of the through hole that is connected to the flexible shaft 28 is a spring accommodating portion 39a having a large diameter. A part of the base end side of 39a is a sliding operation part 39b having a small diameter. A spring 42 is provided in the spring accommodating portion 39a, and one end thereof is provided with the spring accommodating portion 39a.
A pushing member 43 facing the a and the other end of which is located in the sliding operation portion 39b is arranged.
The urging force of 2 acts, and the end portion of the operation wire 35 is connected. Therefore, as shown by the solid line, the operation wire 35 is always held in a pulled state by the urging force of the spring 42 provided in the spring accommodating portion 39a, whereby the chuck connected to the tip of the operation wire 35 is held. The member 34 is held in a chuck state in which the chuck claws 32, 32 are closed. As indicated by the phantom line, when the pushing member 43 is pushed from the sliding operation portion 39b side to the spring housing portion 39a side against the spring 42, the chuck member 34 projects and the chuck claws 32, 32 open. You can do it. Thus, in order to push the pushing member 43, the pusher 44 is connected to the flexible shaft 22 by the connecting cord 45. This pusher 44 has a sliding operation part 39.
It has a thickness such that it can be inserted into b, and can be inserted from the base end side of the sliding operation part 39b.

Further, as shown in FIG. 8, the drive unit 23 is provided with a motor 47 in a casing 46, and a gear 48 is connected to a rotary shaft of the motor 47. A driven gear 51 provided on a drive shaft 50, which is rotatably mounted in a casing 46 by a bearing 49, meshes with the drive shaft 50. The rotary shaft 39 is inserted into the drive shaft 50, and the chamfered portion 50a and the annular groove 5 with which the C ring 41 is engaged are formed on the inner surface thereof.
2 is formed. The rotation shaft 39 and the drive shaft 50 rotate painfully, and therefore the rotation shaft 39 and the drive shaft 50
Is connected by means such as a key or a spline so as to rotate together.

The conduit cleaning device 20 is constructed as described above. By using the conduit cleaning device 20, the conduit, for example, the inside of the treatment instrument insertion channel 4 is cleaned after the endoscope is used. can do. Pipe cleaning device 20
Since the cleaning tool unit 21, the flexible shaft 22, and the drive unit 23 are configured as separate members,
First, the conduit cleaning device 20 is assembled.

In assembling the conduit cleaning device 20, first, the pusher 44 is inserted into the sliding operation portion 39b formed on the rotary shaft 39 of the connector 37, and the pushing member 43 is attached to the spring 4.
Push in the direction against 2. As a result, the operating wire 45 is pushed out, so that the operating wire 4
The chuck member 34 connected to 5 is in a state of protruding from the tip of the flexible shaft 22. In this state, the cleaning tool unit 21 is connected to the tip of the flexible shaft 22. This cleaning tool unit 2
1 is connected by connecting the connecting cylinder 25 to the flexible shaft 28.
The hard ring member 29 provided at the tip of is fitted. When the connecting cylinder 25 is fitted to a predetermined position,
The first operating surfaces 32a, 32a of the chuck claws 32, 32 constituting the chuck member 34 come into contact with the connecting plate 26 provided inside the connecting tubular body 25, and are rotationally displaced in a direction in which they are separated from each other. Then, when the connecting tubular body 25 is fitted to the predetermined position with respect to the hard ring member 29, the chuck claw 32 is in the chuck open state, and the connecting plate 26 is arranged at a position where the chuck can be chucked by the chuck claw 32. Set up. Here, since the connecting tubular body 25 is formed of an elastic member such as rubber, by fitting it to the hard ring member 29 in a tightly fitted state, the gap therebetween is sealed. .

Connecting cylinder 25 in the cleaning tool unit 21
Is fitted to the hard ring member 29 of the flexible shaft 22,
The pusher 44 is detached from the rotating shaft 39. As a result, the pushing member 43 is displaced by the urging force of the spring 42 in the direction in which it enters the sliding operation portion 39b, so that the operation wire 45 is pulled and the chuck member 34 is pulled into the hard ring member 29. To be displaced. As a result, the second operating surface 32b of the chuck claw 32 slides on the inner peripheral edge of the hard ring member 29, so that both chuck claws 32, 32 are displaced in the direction of approaching each other and the connecting plate 26 is moved.
While the chuck is being chucked, the connecting cylinder 25 is pulled toward the flexible shaft 22. As a result, the cleaning tool unit 21 is connected to the flexible shaft 22 so as to rotate integrally with the flexible shaft 28. The connector 37 is connected to the drive unit 23. The connection of the connector 37 to the drive unit 23 is performed by inserting the rotary shaft 39 into the drive shaft 50. When the rotary shaft 39 is inserted into the drive shaft 50, the C ring 41 provided on the outer peripheral surface of the rotary shaft 39 engages with the annular groove 52C provided on the inner surface of the drive shaft 50, so that both are unintentionally. It will not separate.

The conduit cleaning device assembled as described above is, for example, in a state where the endoscope is immersed in a cleaning tank, from the opening at the tip of the insertion portion 2 in the treatment tool insertion channel 4 to the cleaning tool unit. Washing is started by inserting 21. Here, in the treatment instrument insertion channel 4,
For example, it is preferable that the cleaning liquid is supplied from the treatment instrument introducing section 5 or from the suction pipe connecting section 6a side provided on the connector section 3a of the universal cord 3.

With the cleaning tool unit 21 inserted in the treatment tool insertion channel 4, the motor 47 of the drive unit 23 is operated. As a result, the gear 48 rotates, and the driven gear 51 follows and rotates, so that the drive shaft 50 is rotationally driven. The drive shaft 50 includes a flexible shaft 2
Since the rotary shaft 39 in 2 is connected so as to rotate integrally, the rotary shaft 39 rotates, and the flexible shaft 28 connected to the rotary shaft 39 rotates around the shaft, and as a result, the cleaning tool unit. The whole 21 is rotationally driven. Therefore, the brush body 24 is rubbed in the circumferential direction against the inner surface of the treatment instrument insertion channel 4. After the rubbing of the brush body 24 is started in this way, the flexible shaft 2
By feeding 2 into the treatment instrument insertion channel 4, the treatment instrument passage channel 4 is cleaned by the brush main body 24.

Since the rubbing of the brush main body 24 in the treatment instrument insertion channel 4 is performed by the rotation of the flexible shaft 28, to what position the flexible shaft 22 is located in the treatment instrument insertion channel 4. Since it does not have any influence on the rubbing operation of the brush body 24 depending on whether the flexible shaft 22 is inserted into the treatment instrument insertion channel 4, it is a simple operation. As a result, the entire inside of the treatment instrument insertion channel 4 can be cleaned smoothly and reliably, and evenly and uniformly. By making the length of the flexible shaft 22 longer than the total length of the treatment instrument insertion channel 4 and the suction conduit 6, brush cleaning can be performed over the entire length of the treatment instrument insertion channel 4 and the suction conduit 6. It will be. Here, by forming the flexible shaft 28 as a rotation transmission member in the flexible shaft 22 with a double contact coil, even if the flexible shaft 22 is long, the rotation is smoothly and efficiently transmitted. You can In addition, this pipe line cleaning device is used not only when the brush main body 24 is fed, but also when the brush main body 24 is moved in the pulling-out direction.
If the brush main body 24 is pulled out while being rotationally driven by continuing the operation of 7, the inner surface of the treatment instrument insertion channel 4 can be rubbed, so that reciprocal cleaning is also possible.

Since the cleaning tool unit 21 rubs against the inner surface of the conduit, it will be consumed if it is repeatedly used. The cleaning tool unit 21 is detachably connected to the flexible shaft 22. Therefore, when the cleaning tool unit 21 is consumed, the cleaning tool unit 21 can be easily attached and detached from the flexible shaft 22. Can be exchanged. Also,
Since the cleaning tool unit 21 is soiled by cleaning,
Although the cleaning tool unit 21 needs to be sterilized and disinfected for reuse, it is preferably disposable from the viewpoint of hygiene. Since the cleaning tool unit 21 is detachably connected to the flexible shaft 22, the number of disposable members is reduced.

Here, the pushing operation of the flexible shaft into the duct can be performed manually as described above.
For example, if the cleaning tool unit 60 as shown in FIG. 9 is used, the cleaning tool unit 60 can be self-propelled in the pipeline. That is, the cleaning tool unit 60
Has a connecting cylinder 61 made of an elastic member such as rubber,
A supporting member 62 having elasticity is provided so as to project from the connecting cylinder body 61, and a sponge 63 as a scrubbing cleaning tool is fixedly provided to the supporting member 62. Then, a spiral protrusion 63a is formed on the outer peripheral surface of the sponge 63, and the portion of the protrusion 63a slides on the inner surface of the conduit. As a result, the sponge 63 is projected in the pipe 6
When it is rotated in the spiral direction of 3a, it advances while rubbing the inner surface of this conduit.

[0030]

As described above, according to the present invention, the rubbing cleaning tool is connected to the rotation transmitting member constituting the flexible shaft,
Since this rotation transmitting member is configured to be rotationally driven about the axis by the rotation driving means, the rubbing cleaning tool can be reliably rotated in the pipe, so that the entire length of the pipe made of a long thin tube can be obtained. By effectively performing the rubbing with the brush, there is an effect that the inside of the pipe can be easily and completely cleaned.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a configuration of a conduit of an endoscope.

FIG. 2 is an overall configuration diagram of a conduit cleaning device.

FIG. 3 is a cross-sectional view of the cleaning tool unit.

FIG. 4 is a sectional view of a flexible shaft.

FIG. 5 is a cross-sectional view showing a chuck release state of a chuck member.

FIG. 6 is a cross-sectional view showing a chucked state of a chuck member.

FIG. 7 is a sectional view of the connector.

FIG. 8 is a sectional view of a drive unit.

FIG. 9 is an external view showing another example of the cleaning tool unit.

[Explanation of reference numerals] 1 main body operation part 2 insertion part 3 universal code 4 treatment instrument insertion channel 6 suction pipe line 8 fluid pipe line 9 liquid supply pipe line 10 air supply pipe line 20 pipe line cleaning device 21, 60 cleaning tool unit 22 possible Flexible shaft 23 Drive unit 24 Brush main body 25, 61 Connection cylinder 26 Connection plate 27 Flexible tube 28 Flexible shaft 32 Chuck claw 34 Chuck member 37 Connector 47 Motor 50 Drive shaft 63 Sponge 63a Protrusion

Continuation of front page (56) Reference JP-A-3-289948 (JP, A) JP-A-4-312437 (JP, A) JP-A-7-8931 (JP, A) JP-A-7-32130 (JP , A) Japanese Patent Laid-Open No. 7-194533 (JP, A) Japanese Patent Laid-Open No. 8-173379 (JP, A) Fukuikai 2-104892 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB) Name) A61B 1/00 B08B 1/04

Claims (5)

(57) [Claims] 1. An endoscope in which the inner surface of a duct is rubbed to clean it, in which a rotation transmission means is inserted into a flexible tube and a proximal end portion is provided.
A flexible shaft to which a rotation driving means is connected, and a hard ring connected to the tip of the rotation transmitting means.
And the brush body is attached to the connecting cylinder made of elastic material.
A cleaning tool, and fitting the connecting cylinder body into the hard ring in a tightly fitted state.
By doing so, the space between them is sealed, and the connecting cylinder is detachably connected to the tip of the rotation transmitting means.
A chuck member to be connected is provided, and this chuck member
The rotation transmission means and the rubbing cleaning tool rotate together.
A conduit cleaning device for an endoscope, which is configured to be connected as described above . 2. The duct cleaning device for an endoscope according to claim 1, wherein the rotation transmitting means is composed of a flexible shaft formed of a close contact coil. 3. The duct cleaning device for an endoscope according to claim 1, wherein the brush main body of the rubbing cleaning tool is composed of a brush or a sponge. 4. A hard ring at the tip of the flexible sleeve.
A member connected to the flexible shaft is provided at the end of the flexible shaft.
The duct cleaning device for an endoscope according to claim 1 , wherein a seal member is provided between the quality ring and the quality ring . 5. The conduit cleaning device for an endoscope according to claim 1, wherein a sliding contact portion of the rubbing cleaning tool with respect to the inner surface of the conduit is formed in a spiral shape.