JP2005131107A - External channel and endoscope apparatus equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an external channel which is excellent in functionality and with which a plurality of operations can be performed, and to provide an endoscope apparatus provided with the external channel. <P>SOLUTION: The external channel is provided with: a flexible first lumen 25; a second lumen 26 extending along the first lumen 25; and a fixing part for fixing the first lumen 25 and the second lumen 26 to an insertion part 4 of the endoscope in an attachable and detachable manner. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an external channel that supports a treatment instrument that performs a predetermined treatment on a living tissue while being inserted into a body cavity, and an endoscope apparatus including the external channel.

In general, when a treatment is performed on a living tissue in a body cavity by an endoscope apparatus, a treatment tool is inserted into an endoscope channel provided in the endoscope apparatus and guided to the living tissue. A tool is used to perform a predetermined treatment such as excision or suturing of a living tissue.
Here, it is necessary to use various types of treatment tools depending on the state of the living tissue and the manner of treatment, and treatment tools having an outer diameter larger than the inner diameter of the endoscope channel being used may be used. In such a case, the lumen of a tube or the like through which the treatment instrument can be inserted from the proximal end portion (approximate end) to the distal end portion (far-like end) of the insertion portion of the endoscope using a medical tape or a rubber band. Attached externally, the treatment tool is guided into the body cavity through the lumen to perform treatment.
Further, as one of such external lumens, there is also known an external lumen that can be attached in a state where the influence of the curvature of the insertion portion is reduced (see, for example, Patent Document 1).
Japanese Unexamined Patent Publication No. 2002-330928 (paragraph numbers 0014-0039, FIG. 1-5)

  However, since the lumen described above and the lumen described in Patent Document 1 are for inserting a treatment instrument, while using the treatment instrument, another treatment, for example, an operation such as suction can be performed simultaneously. It was inferior in functionality. Therefore, it is difficult to perform an efficient treatment.

  The present invention has been made in view of such circumstances, and an object thereof is to provide an external channel that is excellent in functionality and capable of performing a plurality of operations, and an endoscope apparatus including the external channel. It is to be.

In order to achieve the above object, the present invention provides the following means.
According to a first aspect of the present invention, an endoscope includes a flexible first lumen, a flexible second lumen extending along the first lumen, the first lumen, and the second lumen. There is provided an external channel provided with a fixing part that is detachably fixed to the insertion part.
In the external channel according to the present invention, by attaching the first lumen and the second lumen by the fixing portion along the insertion portion of the endoscope, for example, the treatment tool can be attached via the first lumen. While introducing into a body cavity and performing a predetermined treatment, a body fluid or the like can be sucked through the second lumen. In this way, functionality can be improved over the first lumen and the second lumen.

The invention according to claim 2 provides an endoscope apparatus including the external channel according to claim 1.
In the endoscope apparatus according to the present invention, a plurality of treatments can be simultaneously performed on the living tissue using the external channel, so that more efficient treatment can be performed.

  According to the external channel and the endoscope apparatus according to the present invention, more efficient treatment can be performed using the first lumen and the second lumen.

A first embodiment of an external channel and an endoscope apparatus according to the present invention will be described with reference to FIGS. 1 to 3.
The endoscope auxiliary device (external channel) 1 of the present embodiment is attached along the outer surface of the insertion portion 4 of the endoscope device 3 which is a component of the endoscope system 2 as shown in FIG. It is what
The endoscope system 2 includes the endoscope device 3, a light source device 5 that supplies illumination light to the endoscope device 3, an electrical signal that drives an imaging element (not shown) of the endoscope device 3, and imaging. The video processor 6 generates an electrical signal transmitted from the element as a video signal, and a monitor 7 receives the video signal generated by the video processor 6 and displays an endoscopic image.

  The endoscope device 2 includes the insertion portion 4 inserted into a body cavity, an operation portion 11 having a grip portion 10 located on the proximal end side of the insertion portion 4, and extends from the side of the operation portion 11. Universal cord 12 is provided. An endoscope connector 12 a that is detachably connected to the light source device 5 is provided on the base end side of the universal cord 12. Further, an electric cable 13 having an electric connector 13a connected to the video processor 6 on the proximal end side extends from the endoscope connector 12a.

The insertion portion 4 includes a distal end hard portion 15, a bending portion 16, and a flexible tube portion 17 in order from the distal end side. Further, as shown in FIG. 2, an objective optical system 18 and four illumination optical systems 19 are disposed so as to surround the objective optical system 18 at the distal end portion of the insertion portion 4.
The image sensor is a part of the objective optical system 18. The illumination light supplied from the light source device 5 is irradiated from the illumination optical system 19. Further, the proximal end side of the flexible tube portion 17 is connected to the operation portion 11 via the connection portion 20.
Further, as shown in FIG. 1, the operation unit 11 stops the endoscope image picked up by the bending operation unit 21 and the image pickup device for bending the bending portion 16 in an arbitrary direction, or instructs the release of the image pickup device. A remote switch 22 is provided.

As shown in FIGS. 1 and 2, the endoscope assisting apparatus 1 includes a flexible first lumen 25, a flexible second lumen 26 extending along the first lumen 25, and a first lumen 25. The first lumen 25 and the second lumen 26 are provided with a fixing portion 27 that detachably fixes to the insertion portion 4.
The endoscope auxiliary device 1 is connected to the tube body 30, the first fixing portion 31 and the second fixing portion 32 that fix the tube body 30 to the insertion portion 4, and the proximal end side of the tube body 30. The opening body 33 is provided.

  As shown in FIG. 2, the first lumen 25 and the second lumen 26 are formed in a flexible and elongated shape by an elastomer material such as urethane resin or fluororesin, and are arranged in the tube body 30. It opens at the end of the tube body 30. The cross-sectional area of the opening of the first lumen 25 is formed so as to be larger than the cross-sectional area of the opening of the second lumen 26. Further, the first lumen 25 is arranged so as to be adjacent to the insertion portion 4. In addition, a part of the second lumen 26 is disposed inside the envelope of the first lumen 25 and the insertion portion 4, which is a common tangent line between the outer peripheral surface of the first lumen 25 and the outer peripheral surface of the insertion portion 4. It has come to be.

As shown in FIG. 1, the tube body 30 is made of, for example, synthetic rubber such as silicon rubber, and is disposed along the insertion portion 4 so that the first fixing portion 31 has a far end (tip). The approximate rigid end (base end) is detachably fixed to the connection portion 20 by the second fixing portion 32 while being fixed to the distal end hard portion 15 in a detachable manner. That is, the first fixing portion 31 and the second fixing portion 32 function as the fixing portion 27.
The first fixing portion 25 is a ring made of an elastic material such as silicon rubber. Note that the tube body 30 may be fixed by using a plurality of first fixing portions 25 in the longitudinal direction of the insertion portion 4.
The second fixing portion 32 is made of an elastically deformable resin such as polypropylene, and is provided with two pairs of arm portions (not shown) that make a pair, and each arm portion is connected to the tube body 30 using elastic deformation. The part 20 can be fixed simultaneously.

The opening 33 is made of a resin material, and as shown in FIGS. 1 and 3, a valve body that prevents fluid from flowing out from the lumen communicating with the approximate end of the first lumen 25. A first treatment instrument insertion forceps plug 35 and a second treatment instrument insertion forceps plug 36 that are valve bodies that prevent fluid from flowing out of the lumen communicating with the approximate end of the second lumen 26. And a suction port body 37 for connecting a suction tube 47 to be described later is provided. The first treatment instrument insertion forceps plug 35 and the second treatment instrument insertion forceps plug 36 have slits 35a and 36a through which a treatment tool (not shown) can be inserted, and the slits 35a and 36a are treated. It is designed to close when not inserted.
The suction port body 37 is connected to the first lumen 25 via the branch circuit 38 and to the second lumen 26 via the branch circuit 39 inside the opening port body 33.

The branch circuits 38 and 39 and the suction port body 37 are connected to a three-way cock 40, respectively. The three-way stopcock 40 is operated by a changeover switch 41 provided in the opening mouth body 33, and the connection state between the branch circuits 38 and 39 and the suction mouth body 37 is changed every time the changeover switch 41 is turned on. There are four modes. That is, the suction port body 37 is connected to both branch circuits 38, 39, the suction port body 37 is connected only to the branch circuit 38, the suction port body 37 is connected only to the branch circuit 39, the suction port The body 37 can be switched so as not to be connected to either of the branch circuits 38 and 39.
The first treatment instrument insertion forceps plug 35, the second treatment instrument insertion forceps plug 36, and the changeover switch 41 are arranged on the same side as the bending operation section 21 with respect to the grasping section 10 of the operation section 11. It is like that.
Further, as shown in FIG. 1, a suction tube 47 connected to a suction pump 46 via a suction bottle 45 is connected to the suction port body 37. Note that when the suction tube 47 is not connected to the suction port body 37, a forceps plug similar to the above-described forceps plug for inserting a treatment instrument can be attached.

The case where the endoscope auxiliary device 1 configured as described above is used by being attached to the endoscope device 3 will be described below.
First, the endoscope auxiliary device 1 is attached to the endoscope device 3. That is, the tube body 30 and the connecting portion 20 are sandwiched and fixed between the two arm portions of the second fixing portion 32 with the tube body 30 being along the insertion portion 4. At the same time, the tube body 30 and the insertion portion 4 are fixed by the first fixing portion 31 so as to be bundled at the far end. In addition, when using the 1st fixing | fixed part 31 multiple, it maintains and maintains a suitable space | interval along the length direction of the insertion part 4. FIG. Then, a suction tube 47 is connected to the suction port body 37.

  After the endoscope auxiliary device 1 is mounted, the insertion portion 4 is inserted into the body of the subject, for example, from the mouth. At this time, by operating the bending operation section 21 provided in the operation section 11, the bending section 16 at the distal end of the insertion section 4 can be inserted in a desired direction. By doing so, the insertion portion 4 can be smoothly inserted into the body, and illumination light can be reliably irradiated to the desired position to be observed via the illumination optical system 19.

  Further, the electric signal imaged through the objective observation system 18 is sent to the video processor 6 through the universal cord 12 and the electric cable 13 and converted into a video signal by the video processor 6. The converted video signal is sent to the monitor 7 and displayed as an endoscopic image. Then, when the operator confirms from the endoscopic image displayed on the monitor 7 that the distal end of the insertion section 4 has reached the living tissue to be treated, the operator inserts the distal end of the insertion section 6 on the living tissue while looking at the monitor 7. Locate in the vicinity. At this time, the surgeon can also record the desired endoscopic image in the body cavity by using the remote switch 22.

Next, in this state, the surgeon performs a predetermined treatment. For example, as shown in FIG. 3, the changeover switch 41 rotates the three-way cock 40 so that the suction port body 37 and both branch circuits 38 and 39 communicate with each other. The lumen 26 can suck dirt and the like in the body cavity. At this time, the sucked dirt and the like are collected in the suction bottle 45. In addition, by rotating the three-way cock 40 so that the suction port body 37 and the branch circuit 39 communicate with each other by the changeover switch 41, the first lumen 26 sucks filth and the like in the body cavity with the first lumen 26. It is also possible to insert a treatment instrument into the lumen 25 and perform an appropriate treatment.
Further, according to the rotation of the three-way stopcock 40, the first lumen 25 sucks filth and the like in the body cavity while inserting a treatment tool through the second lumen 26 to perform an appropriate treatment, or the first lumen. Appropriate treatment can also be performed by inserting a treatment tool from the 25 and the second lumen 26, respectively.

  In particular, when the surgeon performs the above-described operation, the first treatment instrument insertion forceps plug 35, the second treatment instrument insertion forceps plug 36, and the changeover switch 41 are connected with the bending operation unit 21. Since they are arranged on the same side, there is no need to change the hand holding the gripping part 10, and the operation of the bending operation part 21, the operation of the treatment instrument, the operation of switching the suction, etc. is performed with the same hand. Can be done well.

Further, of the first lumen 25 and the second lumen 26, the first lumen 25 having a large cross-sectional area is disposed in the vicinity of the insertion portion 4, and an envelope of the first lumen 25 and the insertion portion 4 that becomes a dead space. Since a part of the second lumen 26 is disposed inside the wire, the total cross-sectional area of the tube body 30 and the insertion portion 4 can be reduced, and the pain of the subject at the time of injection into the body can be reduced. be able to.
Since both the first lumen 25 and the second lumen 26 are connected to the suction tube 47 via the suction port body 37, the endoscope apparatus 3 is compared with the case where there are two suction tubes 47. The operability can be improved.

Thus, according to the endoscope auxiliary device 1 and the endoscope device 3 of the present embodiment, a plurality of treatments are simultaneously performed on a living tissue using the first lumen 25 and the second lumen 26. And more efficient treatment can be performed.
It goes without saying that the present invention is not intended only to perform treatment at the same time.

Next, a second embodiment of the endoscope auxiliary apparatus and the endoscope apparatus according to the present invention will be described below with reference to FIGS. 4 to 6. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The difference between the second embodiment and the first embodiment is that the opening body 33 of the first embodiment is configured to be able to suck filth and the like through the first lumen 25 or the second lumen 26. On the other hand, the opening body 50 of the second embodiment is capable of sucking dirt and the like using the first lumen 25 and supplying fluid to the living tissue using the second lumen 26.
Further, the insertion portion 6 of the first embodiment was not positioned when the endoscope auxiliary device 1 was fixed, whereas the insertion portion 6 of the second embodiment was positioned according to the inspection. It is a point that has been made.

In other words, as shown in FIG. 4, the opening body 50 of the present embodiment is formed so that the pipe line communicating with the first lumen 25 is divided into two branches so as to have branch circuits 51 and 52. A first treatment instrument insertion forceps plug 35 is attached to an end of the branch circuit 51. The branch circuit 52 is connected to the suction tube 47, and a stopcock 53 is interposed in the middle of the circuit. The stopcock 53 is operated by the change-over switch 41 so as to cut off the circuit or communicate with it.
In addition, an air supply water tube 54, which is a soft tube, extends outward so that the opening body 50 is connected to the second lumen 26. A syringe 55 as an injection means for supplying fluid into the second lumen 26 is attached.

Moreover, the insertion part 4 of this embodiment is a to-be-fixed part which mounts the 1st fixing | fixed part 31 to the outer peripheral surface of the front-end | tip hard part 15 which is a distant end, as shown in FIG.5 and FIG.6. A first recommended fixing position 56 and a second recommended fixing position 57 are formed.
The first recommended fixed position 56 is disposed at a position corresponding to the upper side of the endoscopic image obtained from the objective optical system 19, and the shape thereof matches the outer peripheral surface shape of the tube body 30 on the far end. Is formed. In the first recommended fixed position 56, “EMR” is displayed as a visible index.
The second recommended fixing position 57 is disposed at a position corresponding to the left side of the endoscopic image obtained from the objective optical system 19, and the shape thereof matches the outer peripheral surface shape on the far end of the insertion portion 4. Is formed. It should be noted that “GI” is displayed at the second recommended fixed position 57 as a visible index different from the index of the first recommended fixed position 56.

In the case of using the endoscope auxiliary device and the endoscope device configured as described above, in the case of an examination of endoscopic mucosa excision (EMR), the first recommended fixed position 56 displayed as “EMR” is used. The tube body 30 is attached and fixed by the first fixing portion 31. In the case of general upper endoscopy, the tube body 30 is attached to the second recommended fixing position 57 displayed as “GI” and fixed by the first fixing portion 31.
Next, a predetermined fluid such as gascon water for removing mucus adhering to the gastric mucosa, a pigment sprayed to facilitate observation of the mucosa, an esophagus, the stomach, In order to facilitate observation of the large intestine, a gas such as air or carbon dioxide is introduced.

  As described above, according to the necessity of inspection, fluids such as water, gascon water, pigment, and air can be discharged from the far end of the second lumen 26, and more efficient inspection can be performed. In addition, two recommended fixing positions are set in the insertion portion 4 in accordance with the outer peripheral surface shape of the tube body 30. Further, “EMR” and “GI” are displayed to identify each recommended fixing position. Therefore, the tube body 30 can be reliably and easily positioned at an appropriate position with respect to the insertion portion 4. That is, according to the procedure of the endoscopic examination, the treatment tool can be taken out from the appropriate position with respect to the endoscopic image via the first lumen 25 and the second lumen 26, so that a more efficient examination is possible. It can be performed.

Next, a third embodiment of the endoscope auxiliary apparatus and the endoscope apparatus according to the present invention will be described below with reference to FIG. In the third embodiment, the same components as those in the second embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The difference between the third embodiment and the second embodiment is that in the opening body 50 of the second embodiment, the syringe 55 is connected to the air supply water tube 54 and the fluid is supplied into the second lumen 26. However, the opening body 50 of the third embodiment is provided with a pump 60 for supplying a gas such as air or carbon dioxide into the second lumen 26 as shown in FIG.
Note that an open / close valve 61 is interposed in the air supply water tube 55.
According to the endoscope auxiliary device and the endoscope device configured as described above, the gas can be released from the second lumen 26 to the living tissue by opening the on-off valve 61. The range of inspections can be further expanded, and further inspection efficiency can be improved. The on-off valve 61 can adjust the gas discharge amount and the like.

Next, an endoscope auxiliary apparatus and an endoscope apparatus according to a fourth embodiment of the present invention will be described below with reference to FIG. In the fourth embodiment, the same components as those in the third embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The difference between the fourth embodiment and the third embodiment is that, in the third embodiment, the pump 60 is connected to the air supply tube 54 and the gas is supplied into the second lumen 26. In the embodiment, as shown in FIG. 8, a water supply tank 62 is interposed between the pump 60 and the on-off valve 61.
According to the endoscope auxiliary device and the endoscope device configured as described above, liquid such as water and pigment in the water supply tank 62 is supplied from the second lumen 26 to the living tissue by pressurization from the pump 60. This can widen the range of inspection and further increase the efficiency of inspection.

In the fourth embodiment, the tube body 30 may be provided with a third lumen (not shown), and a pump for supplying gas may be connected to the third lumen as in the third embodiment. .
By doing so, the first lumen 25 can be used to suck body fluid and the like, the treatment instrument can be inserted, the second lumen 26 can be used to supply water, and the third lumen can be used to supply air. Since it can be performed, more complex inspections can be performed, and the inspection efficiency can be further improved. Further, in this case, the tube body 30 and the insertion portion 4 do not require a pipeline. Therefore, the cleaning and disinfection of the insertion portion 4 is performed only on the outer surface, so that the cleaning and disinfection becomes easy. Furthermore, by using the tube body 30 for single use, the cleaning and disinfecting process can be reduced as compared with the conventional case, and the next inspection can be performed in a short time.

Next, a fifth embodiment of an endoscope auxiliary apparatus and an endoscope apparatus according to the present invention will be described below with reference to FIG. In the fifth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The difference between the fifth embodiment and the first embodiment is that, in the first embodiment, a treatment instrument is inserted into the first lumen 25 and the second lumen 26 as necessary, whereas In the fifth embodiment, the injection needle 70 is housed in the second lumen 26.
That is, as shown in FIG. 9, the injection needle 70 is accommodated in the second lumen 26, and the pipe line 71 inside the injection needle 70 is arranged on the approximate end side of the tube body 30. It is connected to an operating means (syringe) not shown. That is, by operating the operation means, physiological saline, a hemostatic agent, and the like can be released from the tip of the injection needle 70 to the living tissue via the conduit 71.

  According to the endoscope auxiliary device and the endoscope apparatus configured as described above, the injection needle 70 is pushed out from the distant end (tip) of the second lumen 26, and the tip of the injection needle 70 is inserted into the mucous membrane. . Then, physiological saline or a hemostatic agent can be injected into the mucous membrane by operating the operating means. Thus, since the injection needle 70 is stored in the second lumen 26 in advance, the injection needle 70 can be used quickly when necessary, and an efficient inspection can be performed.

Next, a sixth embodiment of the endoscope auxiliary apparatus and the endoscope apparatus according to the present invention will be described below with reference to FIG. In addition, in this 6th Embodiment, the same code | symbol is attached | subjected about the part same as the component in 5th Embodiment, and the description is abbreviate | omitted.
The difference between the sixth embodiment and the fifth embodiment is that the injection needle 70 is housed in the second lumen 26 in the fifth embodiment, whereas the second embodiment is different from the second embodiment. This is that a probe having a heat source 75 is accommodated in the lumen 26.
That is, as shown in FIG. 10, the probe is accommodated in the second lumen 26, and an electric wire 76 for sending a current for generating heat from the heat source 75 is connected to the probe. Further, the electric wire 76 is connected to a control device (not shown) disposed on the approximate end side of the tube body 30.

  According to the endoscope auxiliary device and the endoscope apparatus configured as described above, the heat source 75 is pushed out from the distant end (tip) of the second lumen 26, and the end of the heat source 75 is brought into contact with the mucous membrane. The mucous membrane can be heated by operating the control device to cause the heat source 75 to generate heat. As described above, since the heat source 75 is stored in the second lumen 26 in advance, the heat source 75 can be used quickly when necessary, and an efficient inspection can be performed.

  In the fifth embodiment and the sixth embodiment, the injection needle 70 or the heat source 75 is stored in the second lumen 26 in advance. However, the present invention is not limited to this. Treatment tools such as biopsy forceps to be collected and snare forceps to excise the mucous membrane may be accommodated. In any case, since the desired treatment tool is stored in the tube body 30 in advance, an efficient examination can be performed.

Next, an endoscope auxiliary apparatus and an endoscope apparatus according to a seventh embodiment of the present invention will be described below with reference to FIG. In addition, in this 7th Embodiment, the same code | symbol is attached | subjected about the part same as the component in 5th Embodiment, and the description is abbreviate | omitted.
The difference between the seventh embodiment and the fifth embodiment is that the injection needle 70 is housed in the second lumen 26 in the fifth embodiment, whereas the second embodiment is different from the second embodiment. A plurality of transmitting coils 80 are housed in the lumen 26.
That is, as shown in FIG. 11, the transmitting coil 80 is disposed in the second lumen 26 at regular intervals over the entire length in the second lumen 26. Each transmission coil 80 is connected to an electric wire 81 connected to a control device (not shown) disposed on the approximate end side of the tube body 30. Note that the second lumen 26 of the present embodiment is configured such that the far end side is sealed (closed).

According to the endoscope auxiliary device and the endoscope apparatus configured as described above, by transmitting radio waves of different frequencies from the respective transmission coils 80, the position of each transmission coil 80 is specified outside the body by the difference in frequency. be able to. And the shape of the tube body 30 can be visually recognized by displaying the curve which connects the position of each transmission coil 80 smoothly outside the body. That is, the transmission coil 80, the electric wire 81, and the control device function as a shape display device that displays the shape of the tube body 30.
Thus, since the shape of the tube body 30 in the body cavity can always be recognized, it is easy to operate the endoscope and an efficient examination can be performed.

Next, an endoscope auxiliary apparatus and an endoscope apparatus according to an eighth embodiment of the present invention will be described below with reference to FIG. In the eighth embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
The difference between the eighth embodiment and the first embodiment is that, in the first embodiment, the first lumen 25 and the second lumen 26 are arranged in the tube body 30, whereas the eighth embodiment. Then, as shown in FIG. 12, the third lumen 90 and the fourth lumen 91 are arranged along the first lumen 25 in the tube body 30, and the fifth lumen 92 is arranged along the second lumen 26. It is a point that is arranged.

Further, the far end of the first lumen 25 and the second lumen 26 of the present embodiment are configured to move independently of each other by the notch 93. That is, the first lumen 25, the third lumen 90, and the fourth lumen 92, and the second lumen 26 and the fifth lumen 92 are independent of each other.
In the third lumen 90, a wire 95 having one end connected to a plate-like processing device erecting device 94 that is pivotally supported on the far end side of the first lumen 25 is accommodated. In the fourth lumen 91, a coil-shaped shape memory alloy 96 that bends the far end of the fourth lumen 91 is disposed on the far end side. An electric wire 97 is connected to the shape memory alloy 96, and the electric wire 97 is connected to a control device (not shown) disposed on the approximate end side of the tube body 30. The far end of the fourth lumen 91 is closed.

  Similarly to the fourth lumen 91, the fifth lumen 92 is provided with a coiled shape memory alloy 98 that bends the distal end of the fifth lumen 92 on the distal end side. An electric wire 99 is connected to the shape memory alloy 98, and the electric wire 99 is connected to a control device (not shown) disposed on the approximate end side of the tube body 30. Note that the far end of the fifth lumen 92 is closed.

  In the endoscope auxiliary device according to the present embodiment, the first fixing portion 31 is disposed closer to the proximal side than the electric wires 97 and 99 and closer to the proximal side than the bending portion 16 of the insertion portion 4. It has become. Further, the processing device erecting device 94 may be provided on the far end side of the second lumen 26, or may be provided on both the first lumen 25 and the second lumen 26, respectively. Furthermore, the shape memory alloys 96 and 98 may be provided in either the first lumen 25 or the second lumen 26.

According to the endoscope auxiliary device and the endoscope device of the present embodiment configured as described above, the wire 95 is connected to the tube body 30 when the treatment tool (processing device) is inserted into the first lumen 25. By pulling at the approximate end side, the direction (angle) of the processing device erecting device 94 can be changed, and the direction of the treatment instrument can be changed in an arbitrary direction. Furthermore, the first lumen 25 and the second lumen 26 can be curved in arbitrary directions by passing currents through the shape memory alloys 96 and 98, respectively.
Thus, the direction of the treatment instrument is changed, and the direction of the first lumen 25 (including the fourth lumen 90 and the fifth lumen 91) and the second lumen 26 (including the fifth lumen 92) is changed. Since it can be changed, a movement with a high degree of freedom can be realized, and endoscopy can be performed more efficiently.

The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.
Further, the present invention includes the following.
[Additional Item 1]
A first lumen that is flexible and elongated, has an open end and extends to an approximate end;
A second lumen extending from the near end to the approximate end along the first lumen;
A first fixing portion that can be detachably fixed to the vicinity of the endoscope insertion portion in the vicinity of the distal end, and a second fixing portion that can be detachably fixed to the vicinity of the approximate end of the endoscope insertion portion in the vicinity of the approximate end. And an external channel.
[Appendix 2]
In the external channel described in Appendix 1,
An external channel, wherein the approximate end of the first lumen communicates with a suction source.
[Appendix 2a]
In the external channel described in appendix 2,
An external channel having a switching valve for selecting communication or blocking with the suction source.
[Additional Item 3]
In the external channel described in Appendix 1,
An external channel, wherein the approximate end of the first lumen has an opening through which an endoscope treatment apparatus can communicate.
[Additional Item 4]
In the external channel described in appendix 3,
The external channel, wherein the opening is provided with a valve body that prevents the fluid from flowing out from the first lumen to the outside.
[Additional Item 5]
In the external channel described in appendix 3,
An external channel having a branch with a conduit communicating with the suction source in the vicinity of the opening.
[Additional Item 6]
In the external channel described in Appendix 1,
The external channel, wherein the second lumen is open on both sides of the far end and the approximate end.
[Additional Item 7]
In the external channel described in appendix 6,
An external channel, wherein the approximate end of the second lumen communicates with a suction source.
[Additional Item 8]
In the external channel described in appendix 6,
An external channel, wherein the approximate end of the second lumen has an opening through which an endoscope treatment apparatus can communicate.
[Additional Item 9]
In the external channel described in appendix 8,
An external channel, wherein the opening is provided with a valve body that prevents the fluid from flowing out from the second lumen to the outside.
[Additional Item 10]
In the external channel described in appendix 8,
An external channel having a branch with a conduit communicating with the suction source in the vicinity of the opening.
[Additional Item 11]
In the external channel described in appendix 2,
The external channel, wherein the first lumen and the second lumen communicate with a suction source through a common conduit.
[Additional Item 12]
In the external channel described in appendix 2,
An external channel comprising a switching valve capable of selecting communication or closing between the first lumen and / or the second lumen and a suction source.
[Additional Item 13]
In the external channel described in Appendix 1,
The external channel is characterized in that a material of the first lumen and the second lumen is an elastomer.
[Additional Item 14]
In the external channel described in appendix 13,
An external channel, wherein the elastomer is a synthetic rubber.
[Appendix 15]
In the external channel described in appendix 14,
The external channel, wherein the synthetic rubber is silicon rubber.
[Additional Item 16]
In the external channel described in appendix 13,
The external channel, wherein the elastomer is urethane resin.
[Additional Item 17]
In the external channel described in appendix 13,
The external channel, wherein the elastomer is a fluororesin.
[Appendix 18]
In the external channel described in appendix 6,
An external channel having an injection means for delivering fluid into the second lumen at the approximate end of the second lumen.
[Appendix 18a]
In the external channel described in appendix 18,
An external channel, wherein the injection means is a syringe.
[Appendix 19]
In the external channel described in appendix 18,
The external channel, wherein the injecting means is a pump capable of discharging a fluid from a remote end of the second lumen.
[Additional Item 20]
In the external channel described in appendix 18,
The external channel, wherein the fluid discharged from the remote end of the second lumen is a gas.
[Appendix 21]
In the external channel described in appendix 18,
The external channel, wherein the fluid discharged from the remote end of the second lumen is air.
[Appendix 22]
In the external channel described in appendix 18,
The external channel, wherein the fluid discharged from the remote end of the second lumen is carbon dioxide.
[Additional Item 23]
In the external channel described in appendix 18,
The external channel, wherein the fluid discharged from the remote end of the second lumen is water.
[Appendix 24]
In the external channel described in appendix 18,
An external channel, wherein the fluid discharged from the distant end of the second lumen is a pigment used for mucosal observation.
[Appendix 25]
In the external channel described in Appendix 1,
An external channel characterized in that a needle that moves forward and backward by an operation from the far end is housed near the approximate end of the second lumen.
[Additional Item 26]
In the external channel described in appendix 25,
An external channel for discharging a fluid from a remote end of the needle.
[Appendix 27]
In the external channel described in appendix 26,
The external channel is characterized in that the fluid is injected from an inlet arranged on the approximate end side.
[Appendix 28]
In the external channel described in appendix 8,
The external channel, wherein the endoscope device is a device that releases heat from an end portion of the second lumen.
[Appendix 29]
In the external channel described in appendix 8,
An external channel, wherein the endoscope device is a forceps for gripping a mucous membrane.
[Additional Item 30]
In the external channel described in Appendix 1,
An external channel characterized in that the second lumen is provided with a plurality of transmitting coils arranged in the longitudinal direction and detecting means for detecting the position of each transmitting coil.
[Appendix 31]
In the external channel described in appendix 30,
An external channel, wherein the far end of the second lumen is hermetically sealed while maintaining airtightness with the outside world.
[Appendix 32]
In the external channel described in Appendix 1,
An external channel characterized in that a treatment device erecting means for changing the direction of an endoscope treatment device inserted through a lumen is provided at a remote end of the first lumen and / or the second lumen.
[Additional Item 33]
In the external channel described in Appendix 1,
An external channel comprising bending means for bending the first lumen and / or the distal end of the second lumen.
[Additional Item 34]
In the external channel described in Appendix 1,
The cross-sectional area of the first lumen is set to be larger than the cross-sectional area of the second lumen;
The first lumen is arranged adjacent to the insertion portion of the endoscope, and at least a part of the second lumen is arranged inside the envelope of the first lumen and the insertion portion of the endoscope. An external channel characterized by that.
[Additional Item 35]
In the external channel described in appendix 34,
The external channel, wherein the second lumen is disposed inside an envelope of the insertion portion of the endoscope and the first lumen.
[Appendix 36]
In the external channel described in Appendix 1,
The external channel, wherein the approximate end opening of the first lumen and the approximate end opening of the second lumen are arranged on the same side with respect to the operation portion of the endoscope.
[Appendix 37]
In the external channel described in appendix 36,
The external channel, wherein the first lumen and the second lumen are arranged on the same side as the bending operation portion of the operation portion of the endoscope.
[Appendix 38]
A first lumen that is flexible and elongated, has a distal end open and extends to an approximate end; an endoscope insertion portion near the far end; An external channel having a second fixing part that can be detachably fixed in the vicinity of the endoscope insertion part near the end in the vicinity of the end;
An endoscope having a fixed portion to which the first fixing portion is attached.
[Appendix 39]
In the endoscope according to appendix 38,
An endoscope characterized in that a visible index is provided on the fixed portion.
[Appendix 40]
In the endoscope according to appendix 38,
An endoscope having a plurality of fixed parts that can be selected and fixed.
[Appendix 41]
In the endoscope according to appendix 40,
An endoscope characterized in that different visible indicators are provided on the plurality of fixed parts.

1 is a configuration diagram of an endoscope system for explaining a first embodiment of an external channel and an endoscope apparatus according to the present invention. FIG. It is a perspective view which shows the distant end (front-end | tip) of the insertion part and external channel of the endoscope apparatus shown in FIG. It is sectional drawing of the opening opening body of the external channel shown in FIG. It is a figure for demonstrating 2nd Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the opening opening body of an external channel. It is a figure for demonstrating 2nd Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is a perspective view which shows the insertion part of an endoscope apparatus, and the distant end (tip) of an external channel. is there. It is a perspective view which shows the far end (tip) of the insertion part of the endoscope apparatus shown in FIG. It is a figure for demonstrating 3rd Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the opening opening body of an external channel. It is a figure for demonstrating 4th Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the opening opening body of an external channel. It is a figure for demonstrating 5th Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the far end (tip) of a tube body. It is a figure for demonstrating 6th Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the far end (tip) of a tube body. It is a figure for demonstrating 7th Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the far end (tip) of a tube body. It is a figure for demonstrating 8th Embodiment of the external channel and endoscope apparatus which concern on this invention, Comprising: It is sectional drawing of the far end (tip) of a tube body.

Explanation of symbols

1 Endoscope auxiliary device (external channel)
3 Endoscope Device 25 First Lumen 26 Second Lumen 27 Fixing Unit

Claims (2)

A flexible first lumen,
A flexible second lumen extending along the first lumen;
An external channel comprising: a fixing portion that removably fixes the first lumen and the second lumen to an insertion portion of an endoscope. An endoscope apparatus comprising the external channel according to claim 1.

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