JPH06245897A - Endoscope system - Google Patents

Abstract

PURPOSE:To make a treating device available as it is by making a forceps channel of endoscope cover with channel to have characteristics which a treating device for an endoscope without cover is available. CONSTITUTION:A cover type endoscope 14 has an inserting part cover sheath 6 to cover an inserting part 5 of an endoscope 11 for cover and a tip part 7 and an observation light window 8 is water-tightly fixed on the tip part 7. A forceps outlet 9 and a tip side forceps channel connecting part 10 are formed and a tip part 12 of the endoscope 11 is removably mounted in a state contacting to the observation light window 8. To make an endoscope available without cover, the length and the inner diameter of the forceps channel of a endoscope cover with channel corresponding to a treating device 47 for endoscope without cover in different length, outer diameter and shape are set by the objective internal organ and the treating technique. The cover type endoscope 14 is constituted by the treating device 47 using a endoscope cover with channel having a forceps channel. An endoscope with or without cover can be put to proper use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope system of a channel-equipped endoscope cover system for treating various target organs in combination with a plurality of types of elongated treatment tools.

[0002]

2. Description of the Related Art Conventionally, as a medical endoscope in which various treatment tools are removably inserted to treat a target organ,
There has been proposed an endoscope with a channel-equipped endoscope cover system (hereinafter referred to as a cover-type endoscope) in which an unclean portion can be discarded (for example, Japanese Patent Publication No. 2-54734).

[0003]

However, in the conventional cover-type endoscope, the properties of the forceps channel through which the treatment tool is inserted, that is, the length, the inner diameter, the strength, the material, the shape, the structure, etc., of the cover-less endoscope are different. A treatment tool for an endoscope is not available, but a dedicated treatment tool is used. Therefore, the treatment tool used in combination with the endoscope without the cover cannot be used in common, which is extremely uneconomical and inconvenient, and the treatment tool is similar to that of the endoscope without the cover. In the case of the shape, there is a problem that it is used by mistake.

The present invention has been made by paying attention to such conventional problems, and the treatment tool for an endoscope without a cover can be used as it is, and therefore it is economical and convenient, and is misused. It aims at providing the endoscope system which does not occur.

[0005]

In order to achieve the above object, according to the present invention, an endoscope with a channel-equipped endoscope cover system for treating various target organs in combination with a plurality of types of elongated treatment tools is used. In the endoscope system, the forceps channel of the endoscope cover with a channel has a property that a treatment tool for an endoscope without a cover can be used.

[0006]

In the present invention, among the properties of the forceps channel, the length and the inner diameter are grouped into several types according to the organ to be used and the procedure based on the treatment tool so that the treatment tool can be inserted and still extend from the forceps outlet. To enable it. Further, the shape, structure, and the like are such that a forceps insertion port provided in the mouthpiece for fixing the endoscope operation portion, a forceps plug attached to the forceps insertion port, and a branch portion of the suction conduit in the mouthbody. And a forceps channel tube at the cover insertion portion and the curved portion, a forceps outlet portion at the tip of the cover, and a connection portion for each of them, and is formed so that a treatment tool can be inserted therethrough.

Here, "insertable" means "insertable in a broad sense" and therefore includes a case where a forceps raising mechanism is included, and in the case where a bend mechanism is provided, the center of the forceps channel having the maximum bend angle is the minimum. It also includes the case of curvature, and of course it means that it can be removed. In addition, it is assumed that the forceps channel and the treatment tool will not be damaged, and the forceps channel will be large, so that the operation section, the insertion section, and the bending section will not be inserted under the condition that there will be no trouble in use. It is possible, not just to make the forceps channel thicker to allow the treatment tool to be inserted.

[0008] Also, "usable" means that dirt is leaked from the forceps plug while being transmitted through the insertion portion of the treatment tool during use, the suctioned material jumps out of the slit during suction, or adheres to the treatment tool when the treatment tool is removed. It also means that the polluted waste does not scatter. Further, the treatment tool may be a non-durable type that is used only once and discarded, or a type that is repeatedly used.

[0009]

1 and 2 show an embodiment of the present invention. This embodiment shows an upper digestive tract cover-type endoscope 14, and FIG. 1 shows a distal end portion 1 and a curved portion 2.
2 is a sectional view of the mouthpiece portion for fixing the endoscope operation portion. 1 is a cover-type endoscope 14.
In the curved state in which the curved portion 2 is at the maximum curved angle and the curvature R of the center of the forceps channel tube 3 is the minimum curvature,
A cross section of the forceps channel tube 3 and the endoscope insertion channel 4 is shown, and a cross section of the cover endoscope 11 inserted in the endoscope insertion channel 4 is not shown.

In FIG. 1, a cover-type endoscope 14 includes an insertion portion cover outer cover 6 that covers the insertion portion 5 of the cover endoscope 11.
And the tip part 7 of the cover, and the observation illumination window 8 is watertightly fixed to the tip part 7, and the forceps outlet 9 and the tip side forceps channel connection part 10 are formed.
The tip portion 12 of the cover endoscope 11 is detachably attached to the cover endoscope 11 in a state of hitting. Curved portion 13 of endoscope 11 for cover
In the figure, the curve is curved upward to the limit and curved to the right at the maximum curvature angle to the minimum curvature, and the flexible insertion section cover skin 6 is curved so as to follow this curve. Make up 2. In this embodiment, the maximum bending angle of the curved portion 2 is 210 ° upward and 100 ° to the right.
At this time, the inner bending radius is 6 mm.

The insertion portion 15 continues from the rear end of the curved portion 2,
It connects with the connection part which is not illustrated. The tip part 7 is made of a hard material and has an outer diameter of about 10 mm.
An air / water supply nozzle and its pipeline are provided in a portion other than the cross section of. The insertion portion cover outer skin 6 has an outer diameter dimension such that it can be safely and easily inserted into the target organ, and in the case of the upper digestive tract of this embodiment, it is about 10 mm, and is flexible and has excellent slipperiness. It is made of a resin material and is waterproofly bonded and fixed to the tip part 7. This insert cover 6
Has different flexibility so that the curved portion 2 is more flexible than the insertion portion 15, and the endoscope insertion channel 4 is integrally formed inside thereof and the forceps channel tube 3 is inserted therethrough. A pipe line whose inner diameter is almost the same as the outer diameter of the forceps channel tube 3 is formed, and it is not adhered and fixed in the middle.

The forceps channel tube 3 is composed of a PTFE tube having an inner diameter of 2.0 mm which is excellent in slipperiness, and a reinforcing steel wire coil is wound around the outer circumference of the curved portion. Further, the forceps channel tube 3 also has a function of a suction conduit for inserting a suction object sucked from the inside of the body cavity together with air through the suction conduit 29 and the near side suction tube 24 shown in FIG.

Although not shown, the tip portion 12 of the cover endoscope 11 incorporates a lens group for forming an observation image, a solid-state image pickup device, an illumination lens group, an illumination light guide fiber bundle tip portion, and the like. Further, although not shown, a curved pipe row in which a plurality of thin steel pipes having a length of 3 to 4 mm are connected to each other by a wire is connected to the curved portion 13, and the curved knob provided in the operation portion is operated to rotate. The curved portion 1 is pulled by pulling the wire fixed to the rear end portion of the tip portion 12 through the curved pipe row.
3 is curved, and a signal line for imaging and a light guide fiber bundle for illumination are inserted and built in. The length of the curved portion 13 is about 100 mm.

The outer skin of the curved portion 13 of the cover endoscope 11 is made of a synthetic rubber tube made of slippery fluorine rubber or the like and having a thickness of 0.5 mm. Also, the cover endoscope 11
The insertion part 5 of is made by stacking a steel spiral tube and a mesh wire,
A synthetic resin or an elastomer material is coated to have a total thickness of 0.7 mm so as to be flexible and slightly elastic, and the outer skin is formed of urethane resin or the like which is rich in slipperiness. The endoscope insertion channel 4, the insertion portion 5 and the curved portion 13 of the cover endoscope 11 have a modified oval shape in cross section and occupy almost half of the entire cross section.

FIG. 2 shows a cover-type endoscope 14 for the upper digestive tract.
It is a sectional view of the mouthpiece portion 20 for fixing the endoscope operation portion. The forceps channel 28 has a slit on the upper surface and an elastic forceps plug 21 having a round hole under the slit and the forceps insertion port 2.
2, the forceps introducing section 30, the forceps channel tube 3 and the like, and the branch section 23 in the middle of the forceps introducing section 30. The branch portion 23 communicates with the suction tube 24 attached to the suction tube attachment port body 25 via the suction pipe path 29. The forceps insertion port 22 has an inner diameter slightly larger than that of the forceps channel tube 3 and the forceps introduction part 30, and is connected to the forceps introduction part 30 at a slight angle. The suction conduit 29 is provided in the branch portion 23 substantially orthogonal to the forceps channel 28, and the inner diameter thereof is substantially the same as that of the forceps channel tube 3.

In the cover endoscope 11, the operation portion 31 is tapered and tapered, and the insertion portion 5 extending from the operation portion 31 is inserted into the endoscope insertion channel 4 to open the operation portion 31. The endoscope operation unit fixing mouth unit 20 is detachably crimped and fixed to the trumpet-like operation unit insertion opening 32. A step is formed at the connecting portion between the insertion portion 5 and the operation portion 31, and the space formed in the mouth portion 20 by this step is communicated with the endoscope insertion channel 4 and through the expansion conduit 35. It communicates with the expansion tube 33 attached to the expansion tube attachment port 34.

As described above, the mouthpiece portion 2 for fixing the endoscope operation portion is used.
No. 0, various attachment ports and pipes are integrally formed with synthetic resin such as general-purpose engineering plastic which is slippery with respect to the treatment instrument 47 made of steel or synthetic resin. The connecting portion 27 between the mouth body portion 20 and the forceps channel tube 3 has a length of about 10 m.
m, the outer surface of the forceps channel tube 3 is chemically treated at the connecting portion 27 to increase the adhesive strength, and the entire circumference is watertightly bonded with an epoxy adhesive. Further, the mouth body portion 20 and the insertion portion cover outer cover 6 are watertightly fused to each other, and the insertion portion cover outer cover 6 is about 100
mm is made hard, and the tip thereof is gradually softened toward the boundary of the insertion portion 15 so as to serve as a bending stopper.

3A to 3D are views showing the relationship between the cover type endoscope 14 and the treatment instrument 47 for a coverless endoscope of this embodiment. Forceps channel 28 of the cover-type endoscope 14
Is the length L1 at which the treatment instrument 47 can be inserted,
That is, the length from the forceps outlet 9 to the lesion requiring treatment (approximately 50 mm) and the length required to operate the operating portion of the forceps (approximately 150 to 350 mm) are 200 to 400 mm longer than the combined length. However, the inner diameter thereof is made larger by 0.2 to 0.4 mm than the maximum outer diameter of the commonly used treatment tool 47 so that a treatment tool thinner than the inner diameter can be inserted. Further, in the forceps channel 28, even if the length of the distal end hard portion of the treatment instrument 47 is one of the treatment instruments 47 that is normally used, a normal operator pinches the operation portion of the treatment instrument 47 with the index finger and thumb of the right hand. With the force of 1.5 kg or less, the forceps plug 21 can be inserted and inserted little by little, and the bending radius of the central axis of the forceps channel tube 3 in which the upper curve and the right and left curves are combined at the maximum curve angle. Even in the state where the force is minimized (FIG. 1), the inner shape and the material are made sufficiently large, strong, and slippery so that the forceps outlet 9 can be slowly ejected.

Specifically, the size of the slit and the round hole of the forceps plug 21 can be increased by 1 mm and 0.3 mm, respectively, with respect to the outer diameter of the commonly used treatment tool 47 so that they can be inserted without resistance, and Make sure that there is no liquid leakage during suction.
Further, when the treatment tool 47 is removed, the slits drop the dirt so that the dirt attached to the treatment tool 47 does not scatter. When the thick treatment tool 47 is used in particular, the forceps plug 21 is removed and directly inserted from the forceps insertion opening 22. Therefore, the forceps plug 21 is easy to attach / detach, has little resistance when the treatment tool 47 is inserted / removed, and is slippery.
JIS hardness 40, tear strength JIS / A type 45kg
It is formed of silicon rubber or the like having a characteristic of f / cm ² .

Further, the forceps channel 28 has a shape in which the bending and the step are reduced as much as possible, and the forceps insertion port 2 is provided.
The second portion is larger than the maximum outer diameter of the treatment instrument 47 by 0.5 mm and is inclined by 32 ° with respect to the long axis of the endoscope so that the treatment instrument 47 can be smoothly inserted into the forceps channel tube 3. The forceps introducing portion 30 subsequent thereto is tilted by 170 ° with respect to the forceps inserting opening 22.
The forceps channel tube 3 following is tilted by 158 ° with respect to the forceps introducing portion 30, and the inclination angle is gradually changed.

The forceps channel tube 3 has an insertion portion 15
In the inside, it is hard to be scraped, is slippery, has flexibility, has flexibility not to buckle even in the posture of insertion into the target organ, and has strength that does not easily tear even when the treatment instrument 47 is inserted or removed. It is made of unfilled PTFE and has a wall thickness of 0.5 mm. Further, in the curved portion 2, a spiral semi-circular groove is formed on the outer periphery thereof at a depth of 0.2 mm and at a pitch of 0.5 mm, and a steel wire having a diameter of 0.2 mm is wound around that portion. A flexible urethane resin is thinly coated so as to bond the steel wire and the outer periphery of the channel, and as shown in FIG. 1, the forceps channel tube 3 is curved and the center radius R thereof is 7 mm.
Even when the size becomes mm, the treatment tool 47 has sufficient strength so as not to buckle or break when it is inserted, and has elasticity that facilitates insertion.

The PTFE used here has a tensile strength of 300 kgf / cm ² according to ASTM test D638,
Elongation 300%, hardness D according to ASTM test D2240
A 55 durometer is used. Also, the tip 1
The cover tip part 7 is made of SUS303, the connection part 10 with the forceps channel tube 3 is as short as 5 mm or less, and even when the above-mentioned R becomes a minimum, it smoothly draws an arc and the treatment tool 47 can be inserted without being caught. As described above, it is water-tightly bonded with an epoxy adhesive or the like, and is formed so as to maintain strength that does not break, scrape, or come off. The forceps outlet 9 formed in the tip part 7 has the same inner diameter as that of the forceps channel tube 3 and has a surface roughness of 6.3 S or less so that the inner peripheral surface thereof is slippery, and the length is as short as possible.
It is set to 0 mm or less.

With this configuration, the treatment instrument 4
If the hard length of 7 is 15 cm or less, it can be easily inserted even when R is the minimum as shown in FIG. The forceps channel tube 3 is connected to the mouth side forceps channel tube connection portion 27 so that the forceps channel tube 3 is pushed into the connection portion 2 to 3 mm, and the inner wall of the forceps channel is pushed forward by the treatment tool 47. Also, have a length that is elastic and does not stretch.

In this embodiment, since the treatment tool for the endoscope without a cover can be used, the endoscope without a cover having a different length, outer diameter, and shape depending on the organ to be used and the treatment procedure. The length and inner diameter of the forceps channel of the endoscope cover with channel are set according to the treatment tool for use as shown in the table below, for example.

[Table 1]

Thus, for example, as shown in FIG. 3A, the insertable length L2 is 1550 to 1650 m in the upper digestive tract treatment tool 47 used for the esophagus, stomach, and duodenum.
m, with an outer diameter of 2.4 to 2.6 mm, a cover-type endoscope using a channel-equipped endoscope cover having a forceps channel 28 having a length L1 of 1330 mm and an inner diameter of 2.8 mm. As shown in FIG. 3B, the treatment tool 47 used for the large intestine has an insertable length L2 of 1650.
mm, which is relatively long and has an outer diameter of 3.3 to 3.5 mm, a length L1 of 1350 mm and an inner diameter of 3.7 mm.
The cover-type endoscope 14 is configured by using the channel-equipped endoscope cover having the forceps channel 28.

As shown in FIG. 3C, the gastrointestinal treatment device 47 has an insertable length L2 of 1550 to 1650 mm, but has a relatively large outer diameter of 3.3 mm. The cover-type endoscope 14 is configured by using the channel-equipped endoscope cover having the forceps channel 28 having a length L1 of 1350 mm and an inner diameter of 3.7 mm, and as shown in FIG. 3D, with the treatment instrument 47 for duodenum, Insertable length L2 is 1
For those with a long diameter of 800 to 2000 mm and an outer diameter of 1.8 mm, the length L1 is 1300 mm and the inner diameter is 2.0 m.
The cover-type endoscope 14 is configured by using an endoscope cover with a channel having m forceps channels 28.

The treatment tool 47 and the corresponding channel-equipped endoscope cover may be color-coded so that their correspondence can be easily identified. Further, the forceps channel tube 3 may be provided so as to be located outside when the curved portion 2 is maximally curved as shown in FIG. Further, the shape of the curved portion 2 does not need to have a constant R as shown in FIG. 1, and the curved state of the curved portion is devised so that the treatment tool 47 can be easily inserted, and a smoother shape, for example, the curved portion. It is also possible to have a shape that becomes gentle at the rear end of 2. Further, the reinforcement of the forceps channel tube 3 with the steel wire may be applied to the entire insertion portion or to the curved portion 2 and the vicinity of the mouthpiece side forceps channel tube connection portion 27.

Furthermore, the cover-type endoscope 14 may be a fiberscope or may have a plurality of forceps channels 28. Further, the correspondence between the treatment tool 47 and the endoscope cover with channel is not limited to the above example, and in the treatment tool for urology, respiratory, obstetrics and gynecology, the forceps channel of the endoscope cover with channel is used. , The properties that can be used.

As described above, according to this embodiment, even a user who has conventionally used an endoscope without a channel and a cover and a treatment instrument used in combination with the endoscope has a cover-type instrument as it is. Since it can be used for endoscopes,
There is no need to purchase new treatment tools exclusively for cover endoscopes. Further, when the cover-type endoscope is used in combination with the conventional treatment instrument for an endoscope without a cover, preparation of the treatment instrument is easy, and there is no possibility of being confused by mistake during the operation. Furthermore, since the procedure and the like that are conventionally used with the conventional cover-less endoscope treatment tool can be performed by the cover-type endoscope, the efficiency of the procedure can be improved. Also, depending on whether the patient has an infectious disease,
Since the coverless endoscope and the cover-type endoscope can be used separately without changing the treatment tool, an economical and efficient endoscope system can be constructed.

4 to 6 illustrate an endoscope cover with a channel that can be used in the present invention. This channel-equipped endoscope cover has one end watertightly fixed to the endoscope operation section fixing mouth, and is large enough to cover the operation section, universal cord and connector of the cover endoscope, It has flexibility and an integral type cover that wraps the insertion part of the endoscope cover with channel before coating and the other end of this cover is sealed before coating and opened just before coating. And a means for enabling the other end after opening to be large enough to allow the entire cover endoscope to pass therethrough, and after coating, the other end can be fixed to the cover endoscope. It has a means to do.

In FIG. 6, one end of the covering cover 49 extends from the periphery of the operating portion insertion opening 32 at the rear end of the endoscope operating portion fixing mouth 20 of the endoscope cover with channel 50. Watertight mounting is performed along the periphery of the mounting opening body 34. The covering cover 49 is made of an inexpensive transparent sheet-like synthetic resin such as PVC having a thickness of 0.5 mm or less, is excellent in waterproofness and stretchability, and in the extended state, the insertion portion 31 of the cover endoscope 11, In the contracted state, it can be covered up to just before the connector 52 of the universal cord 51, and in the contracted state, the insertion side of the channel-equipped endoscope cover 50 and the air supply with one end connected to the endoscope operation section fixing mouth section 20, The tube body 56 in which the water supply and suction pipes are integrated is formed into a tubular shape having a size capable of being packaged.

The other end of the covering cover 49 has a wall thickness of 0.2.
Another sealed end 53 made of a synthetic resin such as PS that is easy to be cut into pieces of mm is fusion-bonded to make a waterproof seal. A notch 54 is formed in the sealed end 53, and the notch 54 is torn to remove the sealed end 53 so that the other end of the covering cover 49 is opened. Therefore, at the other end of the covering cover 49, a wire 55 that is flatly coated with a flexible synthetic resin or an elastomer material is water-tightly fused to a wire that can be deformed by the force of a fingertip, and the band 55 is sealed. The ends 53 are fused together. In the package-sealed state, the covering cover 49 is in a state in which the air inside is deflated and flattened, that is, in a vacuum-packed state,
In this state, sterilize by radiation and store.

Next, the endoscope cover 50 with the channel is provided.
How to use is explained. First, the user takes out the sterilized packaged endoscope cover 50 with a channel from the storage location, and connects the extension tube 33 connected to the endoscope cover dilator (not shown) to the extension tube attachment port 34. . Next, endoscope insertion channel 4
And the insertion portion 5 of the cover endoscope 11 is inserted, and subsequently, the operation portion 31 of the cover endoscope 11 is inserted into the operation portion insertion opening 32, and the endoscope operation portion fixing opening is inserted. The operation unit 31 is fixed to the body unit 20.

Next, the notch 54 is torn to tear off the sealed end 5.
After removing 3, the flat belt 55 is spread out in a substantially circular shape, and while the cover 55 is extended by holding the belt 55, the operating portion 31 of the cover endoscope 11 and the universal cord 51 are inserted. Cover it tightly. That is, the covering cover 49 is turned upside down for covering. Of course, the covering cover 49 is formed in advance so that when it is extended, the covering cover 49 has a proper shape, that is, the operation portion 31 is large and the universal cord 51 is thin.

Thereafter, as shown in FIG.
6 is flattened, the universal cord 51 is sandwiched, and it is deformed by hand so as to prevent dirt from entering, and tightly fixed, and by utilizing the flatly folded portion, as shown in FIG. Wrap it so that it encloses. In this state, the connector 52 and the tube body 56 are connected to the device for use. Therefore, in the use state, the cover endoscope 11 is covered with the cover cover 49, and therefore does not become dirty.

After use, in the reverse procedure, the band 55 is unfolded to expose the tube body 56, the universal cord 51 and the operating portion 31 of the cover endoscope 11, and then the covering cover 49 is turned upside down again. The operation unit fixing mouth unit 20 and the insertion unit 15 are covered, and then the band member 55 is returned to a flat state and brought into close contact therewith, and is returned to the state without the sealing end 53 in FIG.

The endoscope cover with channel 5 described above
According to 0, since the sterilization pack and the covering cover 49 are integrated, it is economical and the preparation is easy. Also, in storage, they can be easily stacked and stored, and the storage space can be reduced. Further, since the ring-shaped deformable hard strip 55 is provided in the opening of the covering cover 49, the operating section 31 and the universal cord 51 can be easily inserted without being entangled, and the covering work can be facilitated.

In the covered state, the strip 55 is
Since it is securely fixed to the universal cord 51, it does not come loose during use. Furthermore, after use, the dirty area of the cover-type endoscope can be turned over to cover the dirty area, so that the dirt can be discarded without being scattered. Furthermore,
Since one end of the covering cover 49 is watertightly connected to the endoscope operating portion fixing mouth body 20, dirt does not enter the endoscope side, and the covering cover 49 and the mouth body 20 are positioned and fixed. Therefore, the shape of the cover can be brought closer to the endoscope 11 for the cover in advance.

By the way, in FIG. 2, when the insertion portion 5 of the cover endoscope 11 is inserted into the endoscope insertion channel 4, expansion air is supplied to the endoscope insertion channel 4 so that the endoscope is inserted. The insertion channel 4 itself is slightly inflated for insertion. However, in this case, when the insertion portion 5 is inserted, the operation portion insertion opening 32 is opened, so that the expansion air will escape from this portion. Therefore, it is necessary to increase the pressure of the dilator or to insert the cover endoscope 11 while sealing it so as not to let air escape.
It becomes especially difficult when is long. Further, it is conceivable that the outer sheath of the endoscope insertion channel 4 is thinned or the space between the forceps channel tube 3 is thinned so that the endoscope insertion channel 4 can easily expand. Then, the strength is weakened, and there is a fear that the insertion portion 5 may be damaged when it is inserted.

7A and 7B show an endoscope cover with a channel capable of solving such a problem. FIG. 7A is a transverse sectional view and FIG. 7B is a sectional view taken along the line AA of FIG. 7A. This channel-equipped endoscope cover extends in its insertion portion in the vicinity of the endoscope insertion channel, and the partition wall with the endoscope insertion channel has a flattened cross-section that can be deformed thinner than other parts. A cavity is provided, and the mouthpiece portion for fixing the endoscope operation portion is provided with an extension pipe line communicating with the space, and an extension tube attachment mouth body is provided in communication with this extension pipe passage.

In FIGS. 7A and 7B, in the insertion portion 15 of the cover-type endoscope, an air / water feeding conduit 60 and an endoscope insertion channel 4 having a semicircular cross section are integrally provided. Between the endoscope insertion channel 4 and the forceps channel tube 3, an expansion void 58 having a cross-sectional shape obtained by cutting out a part of a central portion of an elongated oval into a circle is provided.
It extends over the same length as. The endoscope insertion channel 4 and the insertion portion of the cover endoscope to be inserted therein have substantially the same cross-sectional shape, or the insertion portion of the cover endoscope is slightly smaller.

The insertion portion 15 of the cover-type endoscope is a perforated tube having a plurality of the above-mentioned insertion ports or holes, and is flexible and elastic, easy to insert into a body cavity, and reusable. It is made of a safe synthetic resin or a material made of elastomer, and is water-tightly fused to the mouthpiece portion 20 for fixing the endoscope operation portion of the multi-lumen tube. The mouthpiece portion 20 for fixing the endoscope operation portion is made of a synthetic resin that is hard and has excellent slipperiness and strength, and is formed into a conical shape as a whole. At the time of injection molding, a plurality of holes and their mouthpieces (mounting portions) are formed. And are integrally molded. here,
The holes are the operation section insertion port 32, the forceps insertion port 22, and the expansion conduit 35, and the mouth is the expansion tube attachment port body 3.
4, the forceps plug attachment portion 26 and the mouth of the air / water supply conduit 60 (not shown).

The endoscope insertion channel 4 and the expansion space 5
The partition wall 59 between 8 and 8 is formed to have a thin wall thickness of 0.5 mm or less so that the partition wall 59 can be deformed more flexibly than other portions. Further, the expansion tube attachment port 34 can be connected to the cover expander 57 via the expansion tube 33 having flexibility. In addition, each hole of the mouth part 20 and the insertion part 15
Each hole of the forceps insertion port 22 and the forceps channel tube 3, the operation portion insertion port 32 and the endoscope insertion channel 4,
The expansion conduit 35 and the expansion gap 58 are water-tightly connected to each other.

Next, a method of using this endoscope cover with a channel will be described. First, the mouth, syringe, or cover expander 57 is set to a low output, and air is discharged from the expansion space 58. When the air is discharged through the injection cylinder or the mouth, the expansion tube 33 is crushed with a flip or a clothespin after the discharge and stopped. In this way, when the expansion void 58 is sucked, the expansion void 58 is crushed, so that the partition wall 59 is provided only on the partition wall side between the forceps channel tube 3 and the expansion void 58 only in the space where the expansion void 58 is crushed. It will be deformed so that it touches. In this state, the insertion portion of the cover endoscope is inserted into the endoscope insertion channel 4 until it abuts, then the operation portion of the cover endoscope is inserted into the operation portion insertion opening 32, and these are pressed together. Fix it.

After that, suction of the expansion space 58 is stopped, and the outside air is introduced into the expansion space 58 to restore the partition wall 59 to its original shape. When the partition wall 59 returns to its original shape, the inner space shape of the endoscope insertion channel 4 and the outer shape of the insertion portion of the cover endoscope substantially match with each other, whereby the insertion portion of the cover endoscope is inward. It is securely fixed to the endoscope insertion channel 4. When the insertion portion of the cover endoscope is removed, air is discharged from the expansion space 58 and the partition wall 59 is crushed as in the case of insertion.

According to the endoscope cover with the channel,
There is almost no need to provide a gap between the endoscope insertion channel 4 and the insertion portion of the cover endoscope, and the expansion gap 58 can be provided in the dead space of the insertion portion 15, so that the insertion portion 15 itself. The diameter can be reduced because there is no gap between the endoscope insertion channel 4 and the insertion portion of the cover endoscope. In addition, the cover expander 57 has a space 58 for expansion.
Since it is sufficient to output only the air inside, it is not necessary to use a large output inflator as in the conventional case, and energy saving and cost reduction can be achieved.

Furthermore, since the space inside the endoscope insertion channel 4 can be made considerably larger than the insertion portion of the cover endoscope by evacuating air from the expansion space 58 and crushing the partition wall 59, the inside space for the cover can be increased. Insertion / removal of the insertion part of the endoscope
It can be done easily and quickly without causing breakage and buckling. Therefore, even if the insertion portion of the cover endoscope is particularly long, it can be inserted without using a large stand. Further, during use, the expansion void 58 also acts as an air cushion for the forceps channel tube 3, so that the forceps insertion force amount can be reduced depending on the bending angle.

FIG. 8 shows a modification of FIG.
In this example, two expansion voids 58 are provided so as to be expandable in the dead space of the insertion portion 15, and the internal space of the endoscope insertion channel 4 is The cover endoscope is formed large enough so that the insertion portion of the endoscope can be easily inserted.

In this channel-equipped endoscope cover, the insertion portion of the cover endoscope is inserted into and removed from the endoscope insertion channel 4 with the expansion void 58 communicating with the outside air. After the insertion, by supplying air to the expansion space 58 with a dilator or a mouth to expand, the partition wall 59 is pressed against the insertion portion side of the cover endoscope, and the insertion portion of the cover endoscope is inserted. It is fixed to the endoscope insertion channel 4. Therefore, the endoscope cover with the channel is provided with the insertion portion 15
It can be used particularly effectively when it is not necessary to make the outer diameter of the so thin.

In the endoscope cover with a channel shown in FIG. 8, it is possible to easily insert and remove the cover endoscope, and since the expansion gap 58 is expanded at the time of use, the insertion portion 15 is elastic. There is an advantage that the foaming property can be imparted. 7 and 8, the partition wall 59 can be provided separately.

[0051]

As described above, according to the present invention, the forceps channel of the endoscope cover with a channel has the property that a treatment tool for an endoscope without a cover can be used. The treatment instrument for use can be used as it is, so that it is possible to provide an endoscope system which is economical, convenient, and free from misuse.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of an example of an insertion portion of a cover-type endoscope according to the present invention.

FIG. 2 is a cross-sectional view showing a configuration of an example of a mouth portion for fixing the endoscope operation portion, similarly.

FIG. 3 is a diagram showing a relationship between a covered endoscope and a treatment tool for a coverless endoscope.

FIG. 4 is a diagram for explaining an endoscope cover with a channel.

5 is a diagram for explaining an example of use of the endoscope cover with channels shown in FIG.

FIG. 6 is also a diagram for explaining a usage example.

FIG. 7 is a diagram for explaining another example of the endoscope cover with channel.

FIG. 8 is a diagram for explaining still another example.

[Explanation of symbols]

 3 Forceps Channel Tube 4 Endoscope Insertion Channel 6 Insert Section Cover Skin 11 Cover Endoscope 14 Cover Endoscope 20 Endoscope Fixing Mouth Portion 21 Forceps Plug 22 Forceps Insertion Portion 28 Forceps Channel 30 Forceps Introductory part 47 Treatment tool

[Procedure amendment]

[Submission date] May 11, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0020

[Correction method] Change

[Correction content]

Further, the forceps channel 28 has a shape in which the bending and the step are reduced as much as possible, and the forceps insertion port 2 is provided.
The second portion is larger than the maximum outer diameter of the treatment instrument 47 by 0.5 mm and is inclined by 32 ° with respect to the long axis of the endoscope so that the treatment instrument 47 can be smoothly inserted into the forceps channel tube 3. The forceps introducing portion 30 subsequent thereto is inclined at an angle of 10 ° with respect to the forceps inserting portion 22, and the forceps channel tube 3 following the forceps introducing portion 30 is inclined at an angle of 22 ° with respect to the forceps introducing portion 30 to form an inclination angle. Change gradually.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Hideo Ito 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Within Olympus Optical Co., Ltd. (72) Minoru Yamazaki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Osamu Mizuta 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Keiichi Arai 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] 1. An endoscope system of a channel-equipped endoscope cover system for treating various target organs in combination with a plurality of types of elongated treatment tools, wherein the forceps channel of the channel-equipped endoscope cover is An endoscope system characterized in that a treatment tool for an endoscope without a cover can be used.