JPH11216104A - Suction device for endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to perform suck through a suction pass outside an endoscope the same way as the sucking operation through a suction pass inside the endoscope by setting the suction pass outside the endoscope, addition to the suction pass inside the endoscope which is set via a treating tool insert channel and mounting a second suction valve, which is for operating the suction pass outside the endoscope, in a valve mounting part to suck through the suction pass outside the endoscope. SOLUTION: To a suction pass organizer 9 which a suction valve for sucking via a suction pass and a treating tool insert channel is mounted, a second suction valve 20 can be mounted, while exchanging from a suction valve. The second suction valve 20 is set to suck an internal sordes and so on with a suction tube 21 which makes the pass out of endoscope that is set along a insert part of the endoscope 1. The second suction valve 20 is operated same as the suction valve to switch a non-operating state and a suction state that give a negative pressure suction to the pass out of endscope with an operating button 28.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope suction device provided in an endoscope for sucking a body fluid or the like.

[0002]

2. Description of the Related Art An endoscope used for medical purposes or the like has a main body operation section which is grasped and operated by an operator. This main body operation section is provided with an insertion section for insertion into a body cavity. A universal cord connected to a light source device or the like is drawn out. It is necessary to remove internal contaminants such as body fluids in order to improve the visual field of observation inside the body by an endoscope. For this purpose, the endoscope is provided with a suction device.

[0003] A suction device for an endoscope includes a suction path provided inside the endoscope and a suction source unit connected to a universal cord of the endoscope. In general, the suction source unit includes a suction tank and a suction pump, and a pipe from the suction pump is generally configured to be detachably connected to a suction passage inside the endoscope via a connector of a universal cord. . In addition, while the endoscope is used, the suction pump constituting the suction source is always operated, and when the suction is not performed, the suction source is communicated with the atmosphere so that the suction pump is substantially free from load. State. When a body waste such as a bodily fluid is sucked, communication with the air on the suction source side is cut off and connected to a suction passage. For this purpose, a suction valve is provided. The suction valve is usually provided in the main body operation unit, and can be operated by a finger of the hand holding the main body operation unit when an operator or the like performs an operation while holding the main body operation unit.

[0004] Suction of internal contaminants requires a wide passage to some extent, and in endoscopic examination, suction is performed less frequently than, for example, cleaning of observation windows. , To reduce the diameter of the insertion section,
Instead of providing a dedicated suction passage to the inside of the insertion portion, the suction passage is shared with a treatment tool insertion channel for inserting forceps and other treatment tools in the insertion portion. Therefore, the treatment instrument insertion channel is branched into two at the main body operation section, one passage is connected to the treatment instrument introduction section provided at the main body operation section, and the other passage is connected to and separated from the suction passage via the suction valve. In general, the connection is made possible. Then, a plug member is detachably attached to the treatment instrument introduction section in order to prevent this suction path from being opened to the atmosphere.

[0005]

When the suction passage is shared with the treatment instrument insertion channel, the suction operation is greatly restricted. For example, suction may not be performed substantially when the treatment tool is inserted into the treatment tool insertion channel. That is, at the time of inserting the treatment tool, at least a part of the plug member provided in the treatment tool introduction portion is opened, the outer diameter of the treatment tool is large, and the difference from the inner diameter of the treatment tool insertion channel is small. If so, the space that can be used as the suction passage is limited, so that the negative pressure suction force cannot be applied to the distal end portion of the treatment instrument insertion channel. Therefore, it is necessary to remove the treatment tool when performing suction, and to interrupt the treatment for performing suction while performing the treatment requires a long time for the treatment. The burden on is increased.

Further, in order to enable observation by ultrasonic waves together with endoscopic examination, an ultrasonic probe which can be inserted into a treatment instrument insertion channel has been put into practical use. Moreover, in the ultrasonic probe, a large-diameter ultrasonic scanning unit is provided at the tip of the flexible cord, and a large ultrasonic transducer is mounted inside the ultrasonic scanning unit. A configuration in which radial ultrasonic scanning is performed by driving in the rotation direction has also been used. An ultrasonic probe having such a large-diameter ultrasonic scanning unit is designed to be incorporated in advance into a treatment instrument insertion channel at a stage before an insertion portion of an endoscope is inserted into a body cavity, so that ultrasonic scanning is performed. The part is projected from the tip of the insertion part. Since the insertion section bends in an arbitrary direction along the insertion path in the body cavity, a flexible cord is connected to the ultrasonic scanning section. For this reason, the ultrasonic scanning unit needs to be fixedly held at the distal end opening of the treatment instrument insertion channel, and thus the distal end portion of the treatment instrument insertion channel is closed. In this case, the treatment instrument insertion channel cannot be used at all as a suction path or the like.

On the other hand, when performing ultrasonic scanning in a body cavity,
The ultrasonic scanning unit must transmit and receive ultrasonic waves in an ultrasonic transmission medium such as degassed water. Depending on the part where the ultrasonic examination is performed, a large amount of deaerated water may need to be supplied to the body after removing the body waste, but if the treatment instrument insertion channel is in a closed state, suction of the body waste and The operation of supplying deaerated water becomes impossible. Therefore, when incorporating an ultrasonic probe in advance into an endoscope, an endoscope having at least two treatment instrument insertion channels must be used, and an endoscope provided with a single treatment instrument insertion channel must be used. There is also a problem that this type of ultrasonic probe cannot be used.

The present invention has been made in view of the above points, and an object of the present invention is to provide a suction passage outside the endoscope so that the suction operation in the suction passage outside the endoscope can be performed more smoothly. To be able to do it.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides an external endoscope suction passage extending along an insertion portion and a valve mounting portion which is detachably provided. It is characterized by comprising a second suction valve that can be switched between a non-operating state in which the source communicates with the atmosphere and a suction operating state connected to the suction passage outside the endoscope.

Here, the suction passage outside the endoscope may be fixedly connected to the second suction valve. However, from the viewpoint of cleanability and the like, it is convenient for the case where only the suction passage is disposable. For this reason, it is preferable to adopt a configuration that is detachably connected to the second suction valve. In addition, a passage branching portion may be provided in the middle of the suction passage outside the endoscope. And, in this passage branching part, while forming an introduction part of the treatment tool and a plug member for sealing the introduction part is provided detachably, besides suctioning the suction passage outside the endoscope, for example, It can also be used as a treatment instrument insertion passage and as a supply path for degassed water. Further, the distal end of the suction passage outside the endoscope extends to the distal end of the insertion portion of the endoscope, and it is preferable that the distal end portion is detachably fixed to the outer peripheral surface of the insertion portion. In addition, the second suction valve switches at least between the above-described non-operation state and the suction operation state. In the suction operation state, the second suction valve may be configured to operate only the suction passage outside the endoscope. It is also possible to configure so that the internal suction path is also activated. In this case, the endoscope suction path is configured to operate simultaneously with the endoscope suction path, or the endoscope suction path and the endoscope suction path are selectively operated. It can also be configured.

Here, it is not always necessary to provide a dedicated suction valve for operating the suction passage in the endoscope. Therefore, according to a second aspect of the present invention, the suction valve is provided in the insertion portion of the endoscope. A suction passage including an endoscope suction passage that opens at the distal end of the portion and an endoscope outside suction passage that extends along the outer surface of the insertion portion; and a passage provided from the suction source provided in the main body operation portion. It comprises a connected valve mounting portion and a suction valve mounted on the valve mounting portion. The passage from the suction source and the suction passage in the endoscope are connected to the suction valve via the valve mounting portion, and the endoscope is connected to the endoscope. The extra-mirror suction passage is directly connected to the suction valve. By operating the suction valve, the suction passage is selectively or simultaneously connected to a suction source. Switchable to It is an its characterized in that the the.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings. Here, in the following description, as the suction passage outside the endoscope, when the ultrasonic probe is inserted into the treatment tool insertion channel functioning as the suction passage inside the endoscope, this treatment tool insertion channel The suction passage is used instead, but it goes without saying that the application of the present invention is not limited to this. Further, as the type of the endoscope, not only a flexible endoscope having a soft insertion portion but also a rigid endoscope having a hard pipe-shaped insertion portion can be configured. In the case of a flexible endoscope, a suction tube described later has flexibility, but in the case of a rigid endoscope, the suction tube does not need to have flexibility.

FIG. 1 shows a schematic configuration of an endoscope equipped with an ultrasonic probe. In the figure, reference numeral 1 denotes an endoscope, which has a main body operation unit 2 which is operated by an operator or the like, and which is inserted into a body cavity. Insertion section 3 is provided in series. Most of the length of the insertion section 2 constitutes a flexible endoscope that bends in an arbitrary direction along an insertion path in a body cavity. A universal cord 4 is drawn out of the main body operation unit 2. The universal cord 4 has at least a light guide inserted therein, and its distal end is a connector portion detachably connected to a light source device (not shown).

A treatment instrument introduction section 5 is provided in the main body operation section 2, and a treatment instrument insertion channel 6 formed in the insertion section 3 is connected to the treatment instrument introduction section 5. As shown in FIG. 2, the treatment instrument insertion channel 6 is open at the distal end of the insertion section 3, and the vicinity of the connection portion of the treatment instrument insertion channel 6 to the treatment instrument introduction section 5 is a passage branching section. , A suction passage 7 is connected. The suction passage 7 extends from the main body operation unit 2 into the universal cord 4, faces the distal end of the universal cord 4, and is connected to the suction source unit 8 through the suction passage 7. The suction source unit 8 includes a suction pump 8a and a suction tank 8b. When the suction pump 8a is operated, body waste such as body fluid is sucked and removed from the treatment instrument insertion channel 6 into the suction tank 8b via the suction passage 7. Is done. Therefore, from the suction passage 7 to the treatment instrument insertion channel 6, a suction path formed inside the endoscope 1, that is, a suction path in the endoscope is formed.

FIG. 3 shows the structure of the suction mechanism. In the figure, reference numeral 9 denotes a passage forming body, which is mounted on the main body operation unit 2, and which is provided with first and second ports 9a and 9b. I have. The suction passage 7 is separated into a suction source side passage 7a and a channel side passage 7b by the passage forming body 9, and connected to the first and second ports 9a and 9b of the passage forming body 9, respectively.
The passage forming body 9 has an opening on the upper surface of the main body operating portion 2, and the opening portion functions as a valve mounting portion, and a suction valve 10 is detachably mounted on the opening portion. The suction valve 10 has a valve body 11, which is slidably guided in a valve casing 12. The valve casing 12 is provided with the passage forming body 9.
Connecting portion 12a which is fixed by being screwed into the inner surface near the opening end of main body 1 and main body portion 1 which is screwed into connecting portion 12a
2b. The valve main body 11 protrudes from the valve casing 12, and an operation button 13 protruding from the upper surface of the main body operation section 2 is connected to a distal end portion thereof.

The valve body 11 is provided with a communication passage 14 comprising a passage 14a extending from one end side in the axial direction and one or a plurality of through holes 14b formed in the peripheral body. Irrespective of the position of the valve body 11, it is always in communication with the first port 9a. And
By operating the operation button 13, the first port 9a switches between a state in which it communicates with the atmosphere and a state in which it is connected to the second port 9b. Normally, a spring 15 is urged to the valve body 11, and the urging force of the spring 15 holds the valve body 11 at the position shown in FIG. It is in a non-operating state in which it communicates with the atmosphere through an atmosphere communication passage 16 formed between the valve casing 12 and a gap formed between the operation button 13 and the valve casing 12. On the other hand, when the operation button 13 is pushed in against the spring 15, the communication path 14 is cut off from communication with the atmosphere and is switched to a state communicating with the second port 9b. A negative pressure suction force is exerted, and this is a suction operation state. In the drawings, reference numeral 17 denotes a seal member for sealing between the outer peripheral surface of the valve body 11 and the inner peripheral surface of the valve casing 12, and 18a and 18b denote seal members provided before and after the communication passage 14.

As described above, when the suction valve 10 is not operated, the suction source side passage 7a of the suction passage 7 communicates with the atmosphere. Therefore, even if the suction pump 8a of the suction source unit 8 is always operated. The suction pump 8a operates with substantially no load. And operation button 1
3, the suction source side passage 7a is communicated with the channel side passage 7b to switch to a suction operation state, and the entire suction path including the suction passage 7 and the treatment instrument insertion channel 6 is in a negative pressure state. A fluid, for example, a bodily fluid or other bodily contaminants, can be removed by suction.

The passage forming body 9 includes the suction valve 1 described above.
The second suction valve 20 can be mounted in exchange for 0. This second suction valve 20 is used for the endoscope 1
Instead of the treatment tool insertion channel 6 as an endoscope suction path provided in the endoscope, a suction tube 21 constituting an endoscope external suction passage provided along the insertion portion 3 of the endoscope 1 is used to remove internal dirt and the like. Provided for performing suction. Therefore, an external suction device is configured by the suction valve 10 and the suction tube 21, and suction is performed through a path different from that of the suction source unit 8.

Thus, the second suction valve 20 has the structure shown in FIGS. Here, when the second suction valve 20 is mounted, a negative pressure suction force is applied to the channel side passage 7b and the treatment instrument insertion channel 6 of the suction passages 7 constituting the suction passage in the endoscope. State, that is, the second port 9 formed in the passage forming body 9
b is always in a closed state irrespective of the switching position.

The second suction valve 20 includes a valve casing 22 having a connecting part 22a screwed and fixed to the passage forming body 9, a main body part 22b screwed and fixed to the connecting part 22a, And a valve body 23 slidably provided in the casing 22. The valve body 23 is integrally provided with a port blocking portion 23a for preventing a portion of the passage forming body 9 where the first port 9a is formed from communicating with the second port 9b. Also,
Upper and lower two valve chambers 24a and 24b are formed in the main body portion 22a of the valve casing 22. The upper valve chamber 24a is connected to the main body portion 22a through an atmosphere communication passage 25 formed between the valve casing 22 and the valve main body 23. In communication with the atmosphere. Also, the lower valve chamber 2
A connection pipe 26 is connected to 4b, and the suction tube 21 is detachably connected to the connection pipe 26.

The valve body 23 has a passage 27a provided therein and one or a plurality of through holes 27b provided in a peripheral body portion.
A communication path 27 is provided, and the communication path 27 side is always in communication with the first port 9a.
The b side depends on the sliding position of the valve main body 23 in the valve casing 22 depending on the valve chamber 24a or 24b
Is selectively communicated with either of them. In order to switch the chamber, an operation button 28 is provided at the end of the valve body 23 so as to be connected thereto, and the operation button 28 protrudes from the body operation section 2. Normally, as shown in FIG. 4, the operation button 28 is held at a position where the operation button 28 projects upward by the urging force of the spring 29. In this state, the communication path 27 is connected via the valve chamber 24a. It is in a non-operating state communicating with the atmosphere. On the other hand, when the operation button 28 is pushed in a direction against the spring 29 with a finger or the like, as shown in FIG.
7 is switched to a state in which it communicates with the valve chamber 24b, and the suction tube 21 connected to the connection pipe 26 is actuated by applying a negative pressure suction force to the suction tube 21. In the drawing, reference numeral 30 denotes a seal member for sealing between the outer peripheral surface of the port blocking portion 23a of the valve body 23 and the inner peripheral surface of the passage forming body 9, and 31a and 31b denote seal members provided above and below the communication passage 27. It is.

Here, the suction tube 21 constituting the suction passage outside the endoscope is extended to the distal end side along the insertion portion 3 of the endoscope 1, and the distal end portion is the distal end portion of the insertion portion 3. Fixed to For this purpose, a fastening tape 32 made of an adhesive tape or the like is provided at the tip of the suction tube 21, and this fastening tape 32 is for detachably fastening to the tip of the insertion portion 3. The distal end of the suction tube 21 can be fixed at any position and direction.

With the above-described configuration, prior to performing an inspection or diagnosis using the endoscope 1, a suction path in the endoscope including the treatment instrument insertion channel 6 based on the inspection or diagnosis item or the like. Is used to determine whether suction can be performed or not. If the suction path in the endoscope can be used, the insertion section 3 is inserted into the patient with the suction valve 10 attached to the passage forming body 9, and the insertion section 3 is moved to a predetermined position. And a test or diagnosis is performed, and if necessary, a treatment tool such as forceps is inserted into the treatment tool insertion channel 6 to perform an appropriate treatment. In addition, if it is necessary to suck in-body dirt and the like, it is possible to effectively suck in-body dirt and the like by operating the operation button 13 of the suction valve 10.

Depending on the examination and diagnosis items, the endoscope suction path may not be available. For example, as shown in FIG. 6, the ultrasonic inspection can be performed simultaneously with the endoscopic inspection, and this ultrasonic inspection can be performed by the ultrasonic scanning unit 41 in which the large ultrasonic transducer 40 is mounted. When the ultrasonic probe 43 connected to the flexible cord 42 is used, the ultrasonic probe 43 is inserted into the treatment instrument insertion channel 6 before the insertion section 3 is inserted into the body. Then, in order to hold the ultrasonic scanning unit 41 in a fixed manner, a pulling force is applied to the flexible cord 42 so that the base-side surface of the ultrasonic scanning unit 41 is opened at the distal end opening of the treatment instrument insertion channel 6. To make contact with the surrounding area. In this case, the treatment instrument insertion channel 6 cannot be used as a passage for supplying or sucking a fluid, as well as not being able to insert another treatment instrument. Therefore, in such a case, the suction passage outside the endoscope is attached to the endoscope 1.

That is, the suction valve 10 is removed from the passage forming body 9 and replaced with the suction valve 10, and the second suction valve 20 is mounted. The valve body 2 of the second suction valve 20
The suction tube 21 is connected to the connection pipe 26 provided on the insertion tube 3, and the tip of the suction tube 21 is fastened to the tip of the insertion portion 3 using a fastening tape 32. The endoscope 1 incorporating the second suction valve 20 in this manner is
By inserting the insertion portion 3 into the body, an ultrasonic inspection can be performed by the ultrasonic probe 43 inserted into the treatment instrument insertion channel 6 together with the endoscopic inspection. In this case, the treatment instrument insertion channel 6 becomes a dedicated passage for inserting the ultrasonic probe 43. However, operations such as suction of body waste are performed through a suction passage outside the endoscope by the suction tube 21.

The passage forming body 9 is provided with a second suction valve 20 instead of the suction valve 10.
Suction valve 20 is always in the non-operating state of FIG.
The first port 9a is opened to the atmosphere. The suction operation is performed by depressing the operation button 28 to the suction operation state shown in FIG. 5, and the inside of the suction tube 21 is communicated with the suction source side passage 7 a of the suction passage 7, so that the negative pressure suction is performed inside the suction tube 21. By exerting force, suction of body dirt and the like can be performed from the suction tube 21. The operation of the second suction valve 20 is substantially the same as the operation of the suction valve 10 in the suction path in the endoscope, except that the suction path is simply different. Thus, smooth operation can be performed without any discomfort.

The ultrasonic probe 43 is connected to the endoscope 1
When performing an ultrasonic examination in a body by incorporating the ultrasonic scanning unit 41 into the body, it may be necessary to supply, for example, deaerated water or the like using the ultrasonic scanning unit 41 as an ultrasonic transmission medium. The main unit operation unit 2
An air supply / water supply valve 44 (see FIG. 1) is provided in addition to the suction valve, and the operation of the air supply / water supply valve 44 allows supply of cleaning water to the observation window. It is possible to deliver an ultrasonic transmission medium into the body. However, the path of this cleaning water is narrow, and a nozzle is provided at the tip to supply the cleaning water in such a manner that it is jetted to the observation window. Therefore, this path is used as the supply path of the ultrasonic transmission medium. Often not appropriate.

As described above, the external suction device can also function as a supply path of the ultrasonic transmission medium. For this purpose, the one shown in FIG. 7 is used as the suction tube connected to the second suction valve 20. That is, in the drawing, reference numeral 50 denotes a suction tube, and the suction tube 50 is divided into two, and one of the tubes 50 a is connected to the connection pipe 26 of the second suction valve 20.
And the other tube 50 b is a distal tube fixed to the distal end of the insertion section 3. The proximal tube 50a and the distal tube 50b are connected to a passage branching member 51 made of a hard member. Here, the passage branching member 51 has a first connecting portion 51a to which the proximal tube 50a is connected, and a second connecting portion 51b to which the distal tube 50b is connected. A linear main passage 52 is provided between the two connecting portions 51a and 51b. A branch passage 52a branches from the main passage 52, and the branch direction of the branch passage 52a
It rises at a relatively shallow angle from the side 1a.

A plug member 5 is provided at the tip of the branch passage 52a.
3 is detachably mounted, and by attaching the plug member 53, it is possible to prevent the suction passage outside the endoscope from communicating with the atmosphere. On the other hand, this plug member 5
By removing 3 and connecting the syringe 54, the ultrasonic transmission medium can be pumped from the syringe 54. Thus, by interposing the passage branching member 51, the suction tube 50 can be used not only as a suction passage but also as a supply path of an ultrasonic transmission medium. Further, the suction tube 50
If the inside diameter of the suction tube 50 is increased to some extent, the suction tube 50 can also be used as a treatment tool insertion path for inserting a treatment tool such as a catheter.

Here, when the second suction valve 20 is mounted on the passage forming body 9, the second port 9b is always in a closed state, but the second port 9b of the configuration shown in FIGS. When the suction valve 60 is used, the state in which the first port 9a communicates with the atmosphere and the state in which the first port 9a communicates with the suction tube 61 and the second port 9a simultaneously are switched. The second suction valve 60 has a valve casing 62 composed of a connecting member 62a and a main body 62b. The valve main body 63 is slidably provided in the valve casing 62. Is similar to the prior art described above in that valve chambers 64a and 64b are formed above and below. However, as the communication passage 65 communicating with the first port 9a in the passage forming member 9, a passage 65a provided in the valve body 63 is used.
And the valve body 63 slides, thereby causing the valve chamber 64 to slide.
In addition to the first through-hole 65b selectively communicating with the first and second holes 9a and 64b, a second port 9b is provided at a position below the first through-hole 65b to communicate / block the second port 9b with the first port 9a. Through hole 6
5c. And, the valve chamber 64b
Is connected to a connection pipe 66, and the connection pipe 66 is connected to a suction tube 61. Further, the suction tube 61 extends along the insertion section 3 of the endoscope 1 to the distal end thereof.

An operation button 67 is provided on the second suction valve 60.
The operation button 67 is acted upon by a spring 68, which is normally in the inactive state shown in FIG. 8, and the first port 9a is connected to the atmosphere via the atmosphere communication path 69. When the operation button 67 is pressed,
In the suction operation state of FIG. 9, the first through hole 65b constituting the communication passage 65 communicates with the valve chamber 64b, and at the same time, the second port 9b also communicates with the valve chamber 64b via the communication passage 65. To communicate with the first port 9a.
The negative pressure suction force acts on the treatment instrument insertion channel 6 and the suction tube 61 at the same time, and the body waste can be sucked through two paths.

As described above, when the suction can be performed through the two paths, the suction source side passage 7
By making the passage cross-sectional area a equal to or larger than the total passage cross-sectional area of the channel-side passage 7b and the suction tube 61, it is possible to more efficiently suction body waste. Further, even if one of the passages is closed by a solid substance or the like in the body waste, suction becomes possible through the other passage. Further, if the suction tube 61 is provided with the passage branching member shown in FIG. 7, two treatment tool insertion paths including the treatment tool insertion channel 6 and the suction tube 61 can be provided.

Further, the second suction valve may be configured as shown in FIGS. A suction tube 71 is connected to the second suction valve 70 shown in these figures, and this suction valve 70
2 and a valve casing 72 composed of a main body 72b;
A valve body 73 slidably provided in the valve casing 72;
b has upper and lower valve chambers 64a and 64b, respectively. The above points are the same as in the second embodiment, and the communication path 75 is also formed of a path 75a and first and second through holes 75b and 75c.

However, the first port 9a is always in a non-operating state communicating with the atmosphere as shown in FIG.
When the operation button 7 is pushed in by a predetermined amount, as shown in FIG. 11, it communicates with the valve chamber 64a via the first through hole 75b. As a result, the suction tube 71 becomes a negative pressure, and the suction tube 71 enters a first suction operation state in which suction is performed. By further pressing the operation button 76,
As shown in FIG. 12, the first port 9a is connected to the communication path 75.
Through the second through hole 75c to the second port 9b,
The state is switched to the second suction operation state in which suction is performed from the treatment instrument insertion channel 6. In this case, the communication between the first through hole 75b and the valve chamber 64b is cut off. For this purpose, the second through-hole 75 forming the communication path 75
The position of c is configured to be located further below the position of the second through hole 65c in the above-described second embodiment.

Thus, by operating the second suction valve 70, the suction passage outside the endoscope and the suction passage inside the endoscope can be selectively connected to the suction pump 8a constituting the suction source unit 8. As a result, for example, the treatment tool insertion channel 6
When the treatment instrument is inserted into the inside, the suction tube 71
When the treatment tool is not inserted into the treatment tool insertion channel 6, suction can be performed through the treatment tool insertion channel 6. When the suction tube 71 is provided with the passage branching member shown in FIG. 7, a treatment tool such as a catheter can be inserted into the suction tube 71 while performing suction through the treatment tool insertion channel 6. Further, an operation of attaching a syringe or the like to the passage branching member, supplying the perfusate into the suction tube 71 by operating the second suction valve 70, and then performing suction through the treatment instrument insertion channel 6 is repeated. By doing so, the body dirt is removed from the site to be inspected, and the endoscopic inspection can be performed more accurately. When the ultrasonic probe 43 is inserted through the treatment instrument insertion channel 6, the ultrasonic transmission medium can be supplied into the body from the suction tube 71.

Here, when the operation button 76 is depressed, the operator recognizes, by operating feeling, switching between a state in which the suction passage outside the endoscope is formed and a state in which the suction passage inside the endoscope is formed. Operation button 7
6 has a second spring 77 for keeping it inactive and a second
It is preferable to provide the operation reaction force generating means by providing the spring 78 and mounting the ring member 79 which urges the second spring 78 downward in the projecting direction. Thereby, the operation button 7
During the pushing operation of 6, the ring member 79 is held in a free state until the suction passage outside the endoscope is opened, so that the ring member 79 is merely pushed in against the urging force of the spring 77,
When the operation button 76 is further pressed from this state to open the endoscope suction path, the ring member 79 comes into contact with the upper surface of the valve casing 72, and thereafter the second spring 7
8 is also bent, so that the operation reaction force increases.
Therefore, this can be conveyed to the operator as an operation feeling, and the operator can determine whether the suction passage outside the endoscope is in a negative pressure state or the suction passage inside the endoscope is in a negative pressure. it can.

The suction valve 60 shown in FIGS. 8 and 9 and the suction valve 70 shown in FIGS. 10 to 12 can be switched between the suction tube 61 and the suction tube 61 as an external endoscope suction passage. Not only can 71 be connected to the suction pump 8a constituting the suction source unit 8, but also the channel side passage 7b constituting the suction passage in the endoscope can be connected to the suction pump 8a. Then, in these suction valves 60, 70, the suction tubes 61,
When the 71 is not provided, a plug member 80 is attached to those connection portions at the connection pipe 66 of the suction valve 60, for example, as shown in FIG. It can be activated. Therefore, in the configuration of these valves, it is not always necessary to configure as a second suction valve that is used interchangeably with the suction valve 10 for the suction passage in the endoscope. Can also be used.

[0038]

As described above, the present invention provides an endoscope with a suction passage outside the endoscope in addition to a suction passage inside the endoscope through the treatment instrument insertion channel, and a valve mounting portion. Can be equipped with a second suction valve for operating the suction passage outside the endoscope,
The suction operation using the suction passage outside the endoscope can be performed, and the suction operation using the suction passage outside the endoscope can be performed by the same operation as the suction operation using the suction passage inside the endoscope. , And the operability is improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an endoscope equipped with an ultrasonic probe.

FIG. 2 is an explanatory diagram showing a configuration of an endoscope suction path.

FIG. 3 is a cross-sectional view of a suction valve for operating an endoscope suction path.

FIG. 4 is an external view of a main part showing a state in which an ultrasonic probe is incorporated in an endoscope.

FIG. 5 is a cross-sectional view of a second suction valve for activating a suction passage outside the endoscope according to the first embodiment of the present invention.

FIG. 6 is a sectional view of a second suction valve showing an operation different from that of FIG. 5;

FIG. 7 is a sectional view of a passage branching member provided in the suction tube.

FIG. 8 is a sectional view of a second suction valve for operating a suction passage outside the endoscope according to the second embodiment of the present invention.

FIG. 9 is a cross-sectional view of the second suction valve showing an operation state different from that of FIG. 8;

FIG. 10 is a sectional view of a second suction valve for operating a suction passage outside an endoscope according to a third embodiment of the present invention.

FIG. 11 is a sectional view of the second suction valve showing an operation state different from that of FIG. 10;

FIG. 12 shows a second operation state different from that of FIG.
It is sectional drawing of the suction valve of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Endoscope 2 Main body operation part 3 Insertion part 5 Treatment tool introduction part 6 Treatment tool insertion channel 7 Suction passage 7a Suction source side passage 7b Channel side passage 8 Suction source unit 9 Passage forming member 9a First port 9b Second
Ports 20, 60, 73 Suction valves 21, 50, 61, 71 Suction tubes 22, 62, 72 Valve casings 22a, 62a, 72a Connecting parts 22b, 62b, 72b Body parts 23, 63, 73 Valve bodies 28, 67, 76 Operation button 27, 65, 75 Communication passage 27a, 6
5a, 75a Passage 27b Through hole 32 Fastening tape 51 Passage branching member 65b, 7
5b First through hole 65c, 75c Second through hole 80 Plug member

Claims (10)

[Claims] 1. A valve mounting part is provided inside an endoscope, and a valve mounting part is provided in a middle of an endoscope suction path in which a front end is opened at a front end part of an insertion part, and a suction valve is mounted on the valve mounting part. This allows the suction path in the endoscope to be switched between a suction operation state in which the suction path is connected to the suction source and a non-operation state in which the suction source communicates with the atmosphere, and extends along the insertion portion. Switching between an external endoscope suction passage and a non-operating state in which the suction source communicates with the atmosphere to the valve mounting portion, and a suction operating state in which communication with the air is cut off and connected to the external endoscope suction passage. A suction device for an endoscope, wherein a possible second suction valve is detachably mounted. 2. The endoscope suction device according to claim 1, wherein the suction passage outside the endoscope is configured to be detachably connected to the second suction valve. 3. The apparatus according to claim 1, wherein a passage branch portion is provided in the middle of the suction passage outside the endoscope, and an introduction portion which can be sealed by a plug member is provided in the passage branch portion.
A suction device for an endoscope as described in the above. 4. The endoscope suction apparatus according to claim 1, wherein a distal end of the external endoscope suction passage is detachably fixed to a distal end of an insertion portion of the endoscope. . 5. In the suction operation state of the second suction valve, the suction path inside the endoscope is connected to the suction source together with the suction path outside the endoscope.
A suction device for an endoscope as described in the above. 6. The second suction valve includes a non-operation state in which the suction source communicates with the atmosphere, a first suction operation state in which the suction source communicates with the suction path in the endoscope, and an outside operation of the endoscope. The suction device for an endoscope according to claim 1, wherein the suction device is configured to be switchable between three positions, that is, a second suction operation state communicating with the suction passage. 7. An endoscope suction path provided in an insertion portion of an endoscope, and a distal end of which is opened at a distal end portion of the insertion portion, and an endoscope external suction passage extending along an outer surface of the insertion portion. , A valve mounting part provided in the main body operation part and connected to a path from a suction source, and a suction valve mounted on the valve mounting part. The path from the suction source and the endoscope An intra-mirror suction passage is connected to the suction valve via the valve mounting portion, and the endoscope outside suction passage is directly connected to the suction valve, and the suction valve is selectively or selectively connected to the suction passage by operating the suction valve. A suction device for an endoscope, wherein the suction device is configured to be switchable between a suction operation state in which the suction source is connected to the suction source and a non-operation state in which the suction source communicates with the atmosphere. 8. The endoscope according to claim 7, wherein in the suction operation state of the suction valve, both the suction passage outside the endoscope and the suction passage inside the endoscope are connected to the suction source. Mirror suction device. 9. The suction valve according to claim 1, further comprising: a non-operation state in which the suction source is communicated with the atmosphere; a first suction operation state in which the suction source communicates with the endoscope suction path; 8. The suction device for an endoscope according to claim 7, wherein the suction device is configured to be switchable to three positions, that is, a second suction operation state in which the second suction operation is performed. 10. A structure in which the suction valve is detachably connected to the suction passage outside the endoscope, and a plug member is detachably attached to a connection portion of the suction passage inside the endoscope. The suction device for an endoscope according to claim 7, wherein: