JPH10262908A - Endoscope apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain simplification and shortening of a channel and to smoothly clean the inside of the channel with a brush, etc., by forming a connecting port of the channel provided inside the inserting part of an endoscope near the communication part of main body operating part to the inserting part and attachably and detachably fitting a connecting member, which is equipped with a passage to be connected to this connecting port, to the endoscope. SOLUTION: A treatment tool inserting channel 19 and a fluid passage from the inserting part to a main body operating part 11 are almost rectilinearly extended and respectively opened as the connecting ports near the communication part to the inserting part 12. The inserting part 12 is inserted through a guide member 30, its connecting part 32 covers connecting ports 19a and 20a, a passage 35 for suction is formed at this connecting part 32 while being branched from a passage 33 for inserting a treatment tool and passages 34 and 33 for supplying gas, loop-shaped recessed grooves 36 and 37 are formed on the inner peripheral surface of connecting part 32, the passage 33 is communicated with the connecting port and the passage 34 is communicated with a connecting port 20a respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope apparatus used for medical purposes and the like, and more particularly, to a channel for inserting a treatment tool such as forceps and supplying and discharging a fluid. The present invention relates to an endoscope apparatus.

[0002]

2. Description of the Related Art For example, an endoscope used for medical purposes has a body operating section which is grasped and operated by an operator, and an insertion section to be inserted into a body cavity. The part is provided with illumination means and observation means. The lighting means
Since the interior of the body cavity is a dark place, the illumination light is for irradiating the interior of the body cavity with the illumination light. Transmitted by a light guide that extends to On the other hand, the observation means is for inspecting or observing the inside of a body cavity under the irradiation of the illumination light. The observation means is constituted by an image guide in the case of an optical endoscope, and is constituted by an imaging means such as a solid-state imaging device in the case of an electronic endoscope.

[0003] An endoscope is provided with at least the above-mentioned illuminating means and observing means. However, it is possible to not only observe the inside of a body cavity but also perform treatment such as removal of an affected part or hemostasis. ing. When the body cavity is full of body fluids or the like, the body fluids or the like can be removed by suction. For this purpose, a channel is provided in the insertion section, and one end of the channel is open near the observation means, and the other end is extended into the main body operation section. The other end of a so-called treatment tool insertion channel for inserting forceps and other treatment tools is connected to a treatment tool introduction section provided in the main body operation section. In addition, the suction passage extends from the main body operation unit into the universal cord, and opens to a connector part which is an end of the universal cord, and a suction tube is connected to the connector part. Here, the insertion portion of the endoscope is generally configured so that the treatment tool insertion channel and the suction passage are shared due to a request for diameter reduction. In this case, in the treatment tool insertion channel, The passage is branched near the connecting portion to the treatment instrument introduction portion, and one of the branch passages is connected to the treatment instrument introduction portion, and the other is a suction passage, and is led to the universal cord side.
In addition, although the insertion portion is slightly thickened with emphasis on the treatment, two treatment tool insertion channels may be provided in order to allow two treatment tools to be inserted at the same time. Further, the endoscope is also provided with a passage for supplying a cleaning liquid or pressurized air for cleaning the observation window provided with the observation means when the observation window is contaminated with body fluid or the like.

[0004] The insertion portion of the endoscope is designed to be guided from the oral cavity or the like to a predetermined observation / examination target portion through a cavity or the like, or directly from the body epidermis like a laparoscope. Some are configured to be inserted into the inside. In this case, an inert gas called an insufflation gas, for example, CO ₂ gas, is supplied into the body cavity to secure an observation field of view in the body cavity and to perform the treatment safely and easily. Keep the body cavity inflated at all times. Therefore, in such an endoscope inserted into the body cavity from the body epidermis, a channel for supplying CO ₂ gas as an insufflation gas for expanding the body cavity is also provided.

[0005] Here, since the endoscope is inserted into the body cavity of a patient, it must be cleaned each time after use. This cleaning of the endoscope is performed not only by inserting the insertion section inserted into the body cavity, but also by immersing the entire body including the operation section in a cleaning liquid, or by performing gas sterilization. Will be cleaned. Further, as described above, the endoscope is provided with channels, and the insides of these channels are also contaminated in the body cavity. Therefore, it is necessary to clean the insides of the channels. A cleaning brush is used to clean the inside of the channel. That is, the cleaning is performed by inserting the cleaning brush into the channel and rubbing the inner surface of the channel while immersed in the cleaning liquid.

[0006]

In cleaning the inside of a channel using a cleaning brush, even if the channel is straight or has a bent portion, the turning angle is not very extreme, and If the entire path is simple, the cleaning brush can be inserted smoothly. However, the route is complicated, for example, such as a branch portion between the treatment instrument insertion channel and the suction passage,
If the angle of the bend is large, such as a continuous portion between the main body operation unit and the universal cord in the suction passage, the cleaning brush may not be inserted smoothly, and the cleaning may not be performed smoothly. Further, when the entire length from the treatment instrument insertion channel to the suction passage is cleaned with one cleaning brush, the shaft of the brush becomes extremely long. In addition, when the channel has flexibility and is bent in the middle, the shaft of the brush also needs to be flexible. When the brush is inserted and pushed into the end of the suction passage as it is, there are inconveniences such that the further the brush goes toward the back, the more difficult it is to feed the brush, and the unevenness of the rubbing operation on the inner surface of the channel occurs.

The present invention has been made in view of the above points, and simplifies a channel provided in an endoscope and shortens the entire length of the channel so that a channel formed by using a brush or the like can be used. An object of the present invention is to facilitate cleaning.

[0008]

In order to achieve the above-mentioned object, the present invention is directed to an opening of one end of an insertion portion connected to a main body operation portion, and the other end is connected to an insertion portion of the main body operation portion. An endoscope having one or a plurality of channels formed with a connection portion opened in the vicinity of the continuous portion, and detachably fitted to a main body operation portion of the endoscope, and connected to each of the connection portions. And a connecting member having one or a plurality of passages.

Here, the plurality of channels may be at least one or a plurality of treatment instrument insertion channels and one or a plurality of fluid supply / discharge channels, and a passage leading to the treatment instrument insertion channel of the connecting member is provided with a treatment instrument. Is provided, which is configured to be closed by a plug member. On the other hand, a fluid supply / discharge pipe is detachably connected to a passage communicating with the fluid supply / discharge channel.
The suction passage may be formed as a single passage, but the suction passage may be connected to a passage connected to the treatment instrument insertion channel, and the treatment instrument insertion channel may also be used as the suction passage.

The connecting portion of each channel is opened on the side surface near the side where the main body operating portion is connected to the insertion portion so that its position is different in the axial direction, and the connecting member is opened in this main body operating portion. If the channel is formed by an annular member covering all the connecting portions, and an annular groove is formed on the inner peripheral surface of the connecting member, each connecting portion is opened. , Which facilitates cleaning using a brush. In addition, the connection member may cover at least the connection portion of the main body operation unit,
Further, if a cylindrical guide portion surrounding a part of the insertion portion is continuously provided, this guide portion can be inserted into the trocar, and as an endoscope of a type that penetrates into the body cavity from the body epidermis. Can be used. In this case, the connecting portion of the pipe provided on the connecting member is configured as a connecting portion connectable to an endoscope holder for holding the endoscope, and the endoscope holder is supplied with a fluid. It is also possible to provide a fluid passage connected to the connection of the exhaust channel.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 to 4 show a first embodiment of the present invention. An endoscope according to this embodiment uses an insertion portion using a trocar formed of a hollow pipe inserted into the abdominal cavity from the body epidermis as a guide. 1 shows a configuration configured as a laparoscope for inserting a. However, it goes without saying that the present invention can be applied to other endoscopes inserted from the oral cavity or the like.

First, in order to insert the trocar from the body epidermis into the abdominal cavity, as shown in FIG. 1, the inner needle 2 is inserted into the trocar 1 and inserted into the abdominal cavity from the body epidermis. The trocar 1 has a main body 1a formed of a thin pipe made of a hard member, and the tip of the main body 1a has a continuously thin wall on the outer peripheral surface side and a tapered surface 1b having a blade-like end. Have been. A flange 1c is continuously provided at the base end, and an annular groove 1d is formed on the inner surface of the flange 1c. An O-ring 3 is mounted in the groove 1d. On the other hand, the inner needle 2 has a needle tip 2b in which the tip of a shaft 2a is sharpened, and a stopper 2c having a diameter larger than the inner diameter of the trocar 1 is continuously provided at the base end.

As described above, the inner needle 2 is inserted into the trocar 1 from the needle tip 2b of the inner needle 2 and inserted into the body epidermis into the abdominal cavity in a state where the inner needle 2b is projected. To reach the tip. When the trocar 1 is inserted, CO ₂ gas, for example, is supplied as insufflation gas into the abdominal cavity to expand the trocar 1. After the tip of the trocar 1 enters the abdominal cavity, the inner needle 2 is pulled out of the trocar 1. After the inner needle 2 is withdrawn, it is preferable to provide a valve on the trocar 1 and close it.

Although the endoscope 10 is inserted into the trocar 1, the endoscope 10 is not inserted directly into the trocar 1, but is incorporated into a guide member 30 as shown in FIG. The guide member 30 is inserted into the trocar 1. The guide member 30 is formed of a hard member such as plastic or metal, and is formed by connecting a connecting portion 32 to a base end of a tubular main body 31 having an outer diameter slightly smaller than the inner diameter of the trocar 1. When the tubular main body 31 is incorporated in the trocar 1, the distal end of the tubular main body 31 projects a predetermined length from the trocar 1.

On the other hand, the endoscope 10 comprises an insertion section 12 connected to a main body operation section 11, and the insertion section 12
Most of the length from the portion connected to the main body operation unit 11 is a hard portion 12a having a hard pipe as an outer body.
Has an angle portion 12b at the tip thereof and an angle portion 12b
A distal end hard portion 12c is continuously provided at the distal end of. As shown in FIG. 3, the distal end hard portion 12 c is provided with an illumination unit 13 for illuminating the inside of the body cavity and an observation unit 14 for observing the inside of the body cavity under illumination by the illumination unit 13. Here, the illuminating means 13 has a configuration including a light guide made of an optical fiber bundle and a diffusion lens facing the exit end of the light guide, and the observation means includes an objective lens and an imaging means (or an image guide). ), And these configurations are well known in the related art, so that their illustration is omitted. The angle portion 12b is for remotely bending the angled knob 15 provided on the main body operation portion 11 in order to turn the distal end hard portion 12c provided with the illumination means 13 and the observation means 14 in a desired direction. It is. Further, at least the light guide is inserted into the universal cord 16 extended from the main body operation unit 11, and is detachably connected to the light source device.

As is apparent from FIG.
c, in addition to the illuminating means 13 and the observing means 14, a treatment tool outlet 17 for leading out a treatment tool such as forceps and a high-frequency treatment tool, and a fluid supply for supplying CO ₂ gas and the like into the abdominal cavity A mouth 18 is provided. As shown in FIG. 2, the treatment tool outlet 17 and the fluid supply port 18 serve as a treatment tool insertion channel 19 and a fluid passage 20 forming channels, respectively, and extend from the insertion section 12 to the main body operation section 11. Has been extended. Here, FIG.
The treatment instrument insertion channel 19 and the fluid passage 20 are schematically illustrated, and the angled portion 12b is
The portion a is formed of a hollow member, and the treatment instrument insertion channel 19 and the fluid passage 20 are formed in a tube shape inside thereof.

As shown in FIG. 4 and FIG. 5, the treatment instrument insertion channel 19 and the fluid passage 20 are located in the vicinity of the portion of the main body operation section 11 connected to the insertion section 12, that is, the angle knob 1
5 are connected to passage connecting members 19a and 20a as connecting portions at positions on the distal end side from the disposition position. The passage connecting members 19a and 20a are arranged such that the passage connecting member 19a of the main body operation unit 11 is located on the distal end side, and the passage connecting member 20a is located on the proximal end side of the passage connecting member 19a.
The opening position of the main body operation unit 11 differs in the axial direction. The passage connecting member 19a is opened in the main body operation unit 11 in an elliptical shape. Further, the treatment instrument insertion channel 19 and the fluid passage 20 between the treatment instrument outlet 17 and the fluid supply port 18 and the passage connecting members 19a and 20a are substantially linear, and the passage connecting member 19a in the main body operation section 11 is formed. , 20a are bent at a gentle angle.

The passage connecting members 19a and 20a are connected to passages 33 and 34 provided in a connecting portion 32 of the guide member 30. The passage 33 is a treatment instrument passage through which the treatment instrument is inserted, and the passage 34 is a gas passage for supplying CO ₂ gas. Further, a passage 35 branches off from the middle of the passage 33, and the passage 35 thus branched.
Functions as a suction passage. Here, the connecting portion 32 is formed of an annular member, and annular concave grooves 36 and 37 are formed at two positions on the inner peripheral surface side thereof by changing the position in the axial direction. When the endoscope 10 is inserted to a predetermined position, the passage connecting member 19a is
, And the passage connecting member 20a opens at the position of the concave groove 37. In addition, the concave groove 36,
A portion before and after 37 and a portion between them are sealed by a seal member 38 such as an O-ring.

The other end of the passage 33 is open at a corner on the base end side of the connection portion 32, and the other end of the passage 34 and the other end of the passage 35 are open at side surfaces of the connection portion 32, respectively. . The treatment instrument introduction section 39 is connected to the passage 33,
A treatment tool 40 such as forceps can be inserted into the treatment tool introduction section 39. When the treatment tool 40 is not inserted, a plug member made of a rubber plug or the like is attached. Connecting pipes 41 and 42 are provided in the passages 34 and 35, respectively.
Are attached. A gas supply tube 43 and a suction tube 44 as pipes for flowing a fluid are detachably connected to the connection pipes 41 and 42, respectively.
Is connected to a fluid control device 45 provided with an electromagnetic valve and the like for controlling supply and discharge of fluid inside. Although not shown, a CO ₂ gas cylinder, a suction tank, a suction pump, and the like are connected to the fluid control device 45.

By the way, when the endoscope 10 is incorporated in the guide member 30, the passage 33 from the treatment instrument introduction portion 39 on the guide member 30 side and the passage connecting member 19a of the treatment instrument insertion channel 19 in the endoscope 10 are connected. If the position is not correct, the treatment tool 40 cannot be inserted. Therefore, in order to adjust the insertion direction of the endoscope 10,
As is clear from FIG. 4, the main body operation unit 11 of the endoscope 10
Is provided with a positioning protrusion 46, and a concave portion 47 into which the positioning protrusion 46 is fitted is provided on the inner surface of the connection portion 32 of the guide member 30. In the drawing, reference numeral 48 denotes a seal ring provided on the treatment instrument introduction section 39.

As described above, the endoscope 10 and the endoscope 1
The endoscope apparatus is constituted by the guide member 30 that forms an insertion path for the zero insertion section 12 in the body cavity. Therefore,
The operation of the endoscopic device will be described below with reference to an example in which an endoscopic examination is performed using the endoscope apparatus and a treatment is performed on an affected part found as a result of the examination.

In performing an inspection using the endoscope 10,
First, a path for guiding the insertion section 12 of the endoscope 10 into the body cavity is secured. For this purpose, the trocar 1 is used. That is,
With the inner needle 2 incorporated in the trocar 1, they are inserted into the body cavity. Here, the inner needle 2 is provided with a needle tip 2b, and the tip of the trocar 1 is
Since the trocar 1 has the tapered surface 1b connected to the inner needle 2b, the trocar 1 in which the inner needle 2 is incorporated has a sharply pointed shape with almost no step. Therefore, it is possible to smoothly penetrate into the abdominal cavity from the body epidermis via the abdominal wall. When the tip of the trocar 1 is inserted into the abdominal cavity, the inner needle 2 is pulled out of the trocar 1. Thereby, a passage for guiding the endoscope 10 into the abdominal cavity is formed.

The endoscope 10 is not inserted into the trocar 1 alone, but is inserted into the guide member 30 while being inserted. For this purpose, for example, the insertion section 12 of the endoscope 10 is inserted into the guide member 30 in advance.
Here, the insertion portion 12 of the endoscope 10 is inserted from the distal end of the tubular main body 31 in the guide member 30 to a state where at least a portion of the angle portion 12b protrudes. When the connecting portion 32 of the guide member 30 surrounds the distal end portion of the main body operating portion 11 from the insertion portion 12, the concave groove 36 provided on the inner surface thereof has the passage connecting member 19a and the concave groove 37 has the passage. The two concave grooves 36 and 37 are kept in a sealed state by the sealing member 38 which covers the connecting member 20a and seals the concave grooves 36 and 37. The positioning protrusion 46 provided on the main body operation unit 11 of the endoscope 10 is fitted into the concave groove 37 formed on the connection part 32 of the guide member 30, so that the endoscope 10
And the direction of the guide member 30 match.

Here, the connecting portion 3 of the guide member 30
2 are connected to connection pipes 41 and 42, which are connected to a gas supply tube 43 and a suction tube 44 drawn out of a fluid control device 45.
Is connected. In addition, the treatment instrument 40 is inserted into the treatment instrument introduction portion 39 connected to the passage 33, or is sealed with a rubber stopper or the like when the treatment instrument 40 is not inserted.

As described above, the endoscope 10 is connected to the guide member 3.
In a state where the inner needle 2 has been assembled, the inner needle 2 is removed and inserted into the trocar 1 instead of the inner needle 2. Here, the distal end of the tubular main body 31 of the guide member 30 protrudes from the distal end of the trocar 1, and the blade-shaped distal end of the trocar 1 is not in contact with the insertion section 12 of the endoscope 10. It is kept in contact. In particular, since the angle portion 12b of the insertion portion 12 is bendable, its outermost layer is configured as a coating layer made of a soft resin, and if this portion contacts the tip of the trocar 1, there is a risk of being scratched. However, since the guide member 30 protrudes from the tip of the trocar 1, there is no inconvenience that the coating layer of the angle portion 12b is scraped off and remains in the body.

The inside of the abdominal cavity is supplied with CO ₂ gas as insufflation gas. This CO ₂ gas is supplied from the gas supply tube 43 to the concave groove 37 via the connection pipe 32 and the passage 34 in order. Since the passage connecting member 20a of the fluid passage 20 is opened in the concave groove 37, CO ₂ gas is supplied into the abdominal cavity from the fluid supply port 18 through the fluid passage 20, and the abdominal cavity is expanded. Can be maintained. Thereby, the angle part 12b in the insertion part 12 of the endoscope 10
By appropriately operating, the distal end hard portion 12c can be directed in an appropriate direction without contact with the inner wall of the body cavity, and a wide observation field of view by the observation means 14 is secured.

The examination and diagnosis of the abdominal cavity are performed as described above. When an affected part is found, necessary treatment is performed using the treatment tool 40. That is, the rubber stopper closing the treatment instrument introduction section 39 is removed, and forceps and other treatment instruments 40 are inserted into the treatment instrument introduction section 39. This treatment tool 40
Is guided from the passage 33 through the groove 36 to the passage connecting member 19a into the treatment instrument insertion channel 19, and can be projected from the treatment instrument outlet 17 into the body cavity, and can be aimed at the affected part. . Then, for example, when the treatment tool 40 is a grasping forceps, operations such as grasping of an affected part can be performed by opening and closing the grasping claws by remote control. Moreover,
This movement of the treatment tool 40 is always performed by the observation means 1 of the endoscope 10.
4, the safety of the operation is improved.

Further, if a body fluid or the like accumulates in the body cavity such as a bleeding, it becomes difficult to observe the body fluid by the observation means 14. Therefore, the body fluid or the like is removed by suction. This operation is performed by the fluid control device 4.
The suction pump is operated by 5 to bring the suction tube 44 into a negative pressure state. Thereby, body fluid or the like is sucked into the treatment instrument insertion channel 19 from the treatment instrument outlet 17, flows into the concave groove 36 from the passage connecting member 19 a, and further passes through the passage 33 and the passage 35 provided in the connection portion 32. Suction of a body fluid or the like is performed on the suction tube 44 side.

The operation using the endoscope 10 is as described above. After the inspection or treatment using the endoscope 10 is performed, the endoscope 10 must be cleaned each time. By immersing the outer surface of the endoscope 10 in a cleaning solution or a disinfecting solution, not only the insertion portion 12 inserted into the body cavity but also the main body operation portion 11 and the universal cord 16 can be cleaned. The endoscope 10 has a treatment instrument insertion channel 1.
Although channels such as 9 and the fluid passage 20 are provided which open into the body cavity, the insides of these channels must also be cleaned. To clean these channels, a brush is inserted into the channels along with the cleaning and disinfecting solutions and rubbed. Here, treatment instrument insertion channel 1
The channel composed of the fluid passage 9 and the fluid passage 20 is formed of a flexible member because the angle portion 12b is curved, but they are substantially straight paths in the insertion portion 12, and 11, the passage connecting member 19
Since there is only a slight bend in the area leading to a and 20a, the path is extremely simple, and there is no branching point or junction. Moreover, all the channels are relatively short paths from the insertion section 12 to the main body operation section 11.
Therefore, the brush can be inserted smoothly, and the inside of the channel can be completely cleaned completely.

Here, an angle knob 15 is provided on the main body operation section 11 of the endoscope 10, and this angle knob 15 is used to bend the angle section 12b of the insertion section 12 by remote control. Is performed by pushing and pulling the operation wire. Therefore, a part where the angle knob 15 is provided in the main body operation part 11 is equipped with a complicated push-pull operation mechanism having a pulley and the like,
And when the channel is extended to this portion, such as when a base plate for supporting the axis of the angle knob 15 is provided,
In some cases, such as detouring the push-pull operation mechanism, it is difficult to route the channel, and it may be necessary to bend the channel in a complicated manner. However, the passage connecting members 19a, 20
Opening a in the vicinity of the portion connected to the insertion portion 12 in the main body operation portion 11, that is, at a position closer to the front side than the position where the push-pull operation mechanism is provided, allows the channel to extend in a substantially straight state without difficulty. Can be. For this reason, from the viewpoint of cleaning using a brush, it is more preferable that the channel is opened to the front side of the portion where the angle knob 15 is provided.

As described above, the endoscope 10 can be easily cleaned. However, the passages 33 to 35 provided in the connecting portion 32 of the guide member 30 which is an extension of these channels have branching portions and are considerably large. There are also sharply curved paths. However, since these passages 33 to 35 have extremely short overall lengths, brushes can be easily inserted and the like, and the cleaning properties are not particularly poor. Further, the gas supply tube 43 and the suction tube 44 also
By separating from the connecting portion 32 and also from the fluid control device 45, the cleaning can be easily performed. Furthermore, since the guide member 30 can be manufactured inexpensively as a plastic molded product, it is more preferable in terms of sanitation if it is disposable after each use.

In the case of a laparoscope, the endoscope 10 is used.
Are fixedly held by an endoscope holder. That is, as shown in FIG. 6, the patient is laid on the examination table 50, and the endoscope is fixed to the endoscope holder 51 detachably fixed to the side of the examination table 50. The operator's hand can be released from the endoscope so that other operations can be performed. Since the endoscope 10 described above is used as a laparoscope, the guide member 52 shown in FIG.
With the use of, the endoscope 10 can be fixed to the endoscope holder 51 with the insertion portion 12 inserted. That is,
The guide member 52 has a connecting portion 54 connected to a cylindrical main body 53 in the same manner as the guide member 30 described above.
The connecting portion 54 is provided with a passage 55 for inserting the forceps 30 at the same position as the connecting portion 32 of the guide member 30. In addition, a passage 56 for supplying CO ₂ gas and a passage 57 for suction are provided, and a connecting portion 54 is provided.
Are formed with annular concave grooves 58, 59 at two locations. Then, when the endoscope 10 is inserted through the guide member 52, the concave groove 58 communicates with the passage connecting member 19a, and the concave groove 59 communicates with the passage connecting member 20a.

One end of the passage 55 communicates with the concave groove 58, and the other end is opened at the upper corner of the connecting portion 54, and a treatment instrument introducing portion 60 is mounted in this opening. The passage 57 is opened at a position which is 180 ° inverted from the opening position of the passage 55 in the concave groove 58, and the other end is opened at an end face of a connecting portion 61 extended from the connecting portion 54. further,
One end of the passage 56 faces the concave groove 59, and the other end is open together with the passage 57 on the end face of the connecting portion 61. The connecting portion 61 is inseparable from the end of the endoscope holder 51, and is connected by screwing a rotatably mounted cap nut 62. A screw portion 61a is formed, and the endoscope holder 51 is attached to the screw portion 61a.
The guide member 52 incorporating the endoscope 10 is connected to the endoscope holder 51 by screwing and tightening the side cap nut 62.

The endoscope holder 51 is formed by bending a hard rod-shaped member made of metal, synthetic resin, or the like. Inside the endoscope holder 51, as shown in FIG. When the guide member 52 is connected to the endoscope holder 51, a passage 56 for supplying CO ₂ gas is provided in the gas supply passage 63 and a passage serving as a suction passage. 57 communicates with the suction channel 64. In order to seal these communicating portions, a gasket 64 having a through hole formed in these communicating portions is interposed between the end surface of the endoscope holder 51 and the end surface of the connecting portion 61 in the guide member 52. . Pipe connection portions 65 and 66 extending obliquely downward are provided in the vertical portion of the endoscope holder 51 at an intermediate position.
5 and 66 are a gas supply tube 67 and a suction tube 68.
Are removably connected. The other ends of the gas supply tube 67 and the suction tube 68 are detachably connected to the fluid control device, similarly to the gas supply tube 33 and the suction tube 34 described above.

As described above, by forming a flow path in the endoscope holder 51, only the universal cord 16 is pulled out from the main body operation section 11 of the endoscope 10, and the tube is connected to the guide member. Since there is no need to pull out, it is extremely simple to route pipes and wiring, and it becomes convenient for an operator to insert a treatment tool such as forceps, operate the angle knob 15, and perform other operations. . Here, after using the endoscope 10,
The cleaning of the entire endoscope 10 and the guide member 52 is performed in the same manner as that of the configuration shown in FIG. 2 described above, but the gas supply channel 63 and the suction channel 64 are provided in the endoscope holder 51. Due to the provided relationship, the endoscope holder 51 also needs to be cleaned. Originally, after using the endoscope 10, the endoscope holder 51 is removed from the examination table 50 and is cleaned,
Alternatively, the endoscope holder 51 is formed of a hard member such as a metal, so that the brush can be easily inserted into the gas supply channel 63 and the suction channel 64. Cleaning the inside does not have to be particularly troublesome.

[0036]

As described above, according to the present invention, one or a plurality of channels provided in the insertion portion of the endoscope are opened in the connection portion formed near the connecting portion of the main body operation portion to the insertion portion. The connection member is detachably fitted to the main body operation unit of the endoscope to provide one or a plurality of passages connected to each connection unit, thereby simplifying a channel provided in the endoscope. At the same time, the overall length can be reduced, and effects such as smooth cleaning of the inside of the channel using a brush or the like can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a trocar for securing an insertion path of an endoscope together with an inner needle.

FIG. 2 is a cross-sectional view showing the first embodiment of the present invention, in which a guide member and an endoscope are incorporated in a trocar, and the endoscope shows only a channel formed in an insertion portion. FIG.

FIG. 3 is an external view of a distal end portion of an insertion section of the endoscope.

FIG. 4 is a sectional view of a main part of a main body operation unit of the endoscope.

FIG. 5 is an external view of a connecting portion between a main body operation unit and a guide member of the endoscope.

FIG. 6 is an external view showing a state where the endoscope is mounted on an endoscope holder.

FIG. 7 shows a second embodiment of the present invention, and is a cross-sectional view of a guide member in a state where an endoscope is incorporated in a trocar and connected to an endoscope holder, wherein the endoscope is inserted. It is a figure showing only a channel formed in a part.

FIG. 8 is a sectional view taken along line XX of FIG. 7;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Trocar 10 Endoscope 11 Main body operation part 12 Insertion part 17 Treatment tool outlet 18 Fluid supply port 19 Treatment tool insertion channel 20 Fluid passage 19a, 20a Passage connecting member 30, 52
Guide members 31, 53 Cylindrical main bodies 32, 54
Connection part 33-35, 55-57 Passage 36, 3
7, 57, 59 Groove 43, 67 Gas supply tube 44, 68
Suction tube 45 Fluid control device 51 Endoscope holder 63 Gas supply channel 64 Suction channel

Claims (6)

[Claims] 1. One or a plurality of connectors each having one end formed at an end of an insertion portion connected to an operation portion of a main body, and another end formed with a connection portion opened near a portion connected to the insertion portion of the operation portion of the main body. A configuration having an endoscope provided with a channel, and a connection member having one or a plurality of passages detachably fitted to a main body operation portion of the endoscope and connected to the connection portions. An endoscope apparatus characterized in that: 2. The endoscope is provided with at least one or a plurality of treatment instrument insertion channels and one or a plurality of fluid supply / discharge channels, and a passage leading to the treatment instrument insertion channel provided on the connection member is provided. The treatment instrument introduction section for guiding the treatment instrument is attached, the treatment instrument introduction section is configured to be closed by a plug member, and a fluid supply / discharge pipe is detachable from a passage leading to the fluid supply / discharge channel. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is connected to the endoscope. 3. The endoscope apparatus according to claim 1, wherein the connection member is provided so as to join a suction passage with a passage communicating with the treatment instrument insertion channel. 4. A connecting portion of each channel is opened on a side surface near a side where the main body operating portion is connected to an insertion portion so as to be shifted in an axial direction, and the connecting member is connected to the main body. It is formed of an annular member that covers all the connecting portions that open to the operation portion, and an annular groove that opens each of the connecting portions is formed on the inner peripheral surface of the connecting member. 3. The endoscope apparatus according to claim 2, wherein the passage is opened. 5. The connecting member is provided with a cylindrical guide section surrounding a part of the insertion section, and the guide section can be inserted into a trocar. The endoscope apparatus according to claim 1. 6. A connection portion of the pipe is provided at a connection portion connectable to an endoscope holder for holding an endoscope, and the endoscope holder has a supply / drainage channel for the fluid. The endoscope apparatus according to claim 5, wherein a fluid passage connected to the connection portion is provided.