JPH0724084Y2 - Endoscope device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention comprises an endoscope and an endoscope guide device for guiding the endoscope and the treatment tool. The present invention relates to an endoscope device for inserting an endoscope or a treatment tool into a body or the like to perform an inspection or a treatment.

[Prior Art] For example, an endoscope such as a nephroscope used for removing kidney stones is to be inserted into a narrow cavity such as the urethra, so that the insertion portion has an extremely thin diameter. There is a need. Moreover, in order to perform the above-mentioned treatment such as crushing and collecting kidney stones, it is necessary to insert a treatment tool. Therefore, as an endoscope of this type, it has an extremely small-diameter insertion part that incorporates only a light guide as illumination means and an image guide as observation means, and an eyepiece mechanism or the like is provided at the base end of this insertion part. A structure is used in which the mounted body parts are connected in series, and when the endoscope is inserted into the body, it is guided by an endoscope guide device.

Here, the endoscope guide device is made of a flexible tube material, and is formed by a guide tube into which an insertion portion of the endoscope or a treatment tool is inserted, and an operation portion that is connected to a proximal end portion of the guide tube. To be done. Then, the operation section of the endoscope guide device is provided with an introduction section for introducing these endoscopes and the like. One end of the guide pipe faces the introduction section, and the other end of the guide pipe is It communicates with the guide tube in the operation part. Further, in order to allow the distal end of the guide tube of the endoscope guide device to smoothly follow the curved portion of the insertion path, it can be bent in at least one direction. An angle operation mechanism is provided in the operation unit so that the operation can be performed by remote operation at hand.

Thus, when the endoscope is inserted into the body, the endoscope is incorporated into the endoscope guide device so that the endoscope can be smoothly inserted along the insertion path in the body, and the treatment is performed. When carrying out operations such as crushing and collecting calculi using a tool, the endoscope can be pulled out from the endoscope guide device and a necessary treatment tool can be inserted. A connecting mechanism is provided between the endoscope guide device and the endoscope guide device so that the endoscope and the treatment instrument can be detachably fixed to the endoscope guide device in the inserted state.

[Problems to be Solved by the Invention] By the way, in order to better observe the inside of the body cavity when the endoscope is inserted into the body cavity with the endoscope inserted, The tip of the insertion part of the endoscope must not be retracted from the tip of the guide tube of the endoscope guide device to the back side. On the other hand, if the insertion portion of the endoscope projects from the guide tube, there is a problem that the inner wall of the body cavity may be pierced. Here, the insertion portion of the endoscope is also formed of a soft member like the guide tube, but even if the insertion member is a soft member, if the projection length from the guide tube is short, the rigidity becomes high, and Since the insertion portion is extremely thin, the risk of being stuck into the inner wall of the body cavity during the insertion operation is considerably high.

From the above, when the endoscope is attached to the endoscope guide device, the tip of the insertion portion of the endoscope, in order to improve the observation field of view, and to hold the inner wall of the body cavity so as not to damage, Although it is necessary to dispose it at a predetermined position, in the conventional technique, the position between the tip of the guide tube of the endoscope guide device and the tip of the insertion portion of the endoscope can be effectively adjusted. Didn't.

The present invention has been made in view of the above points, and its purpose is to make the distal end of the insertion portion of the endoscope with respect to the guide tube of the endoscope guide device when mounted on the endoscope. An object of the present invention is to provide an endoscope device that can be fixed in a state adjusted to an appropriate position.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides an endoscope in which a guide tube is continuously provided to an operating portion and an insertion passage is formed from the operating portion to the guide tube. It has a mirror guide device and an endoscope in which an insertion portion is connected to the main body, and the connection member is connected to the operation portion in an airtight state, and the insertion portion of the endoscope is connected to the connection member. A connecting mechanism for detachably connecting the main body portion in a state of being inserted into the insertion passage is attached, and the endoscope can be fixed by the connecting mechanism, and the insertion portion of the endoscope is An insertion portion length adjusting means for adjusting the length of the insertion portion is provided at a position surrounded by a connecting portion detachably connected to the main body portion so as to be in a predetermined position in a non-projecting state from the tip of the guide tube. The feature is that it is configured.

[Operation] The endoscope is inserted through the insertion passage formed in the endoscope guide device, the insertion portion of the endoscope is exposed to a position near the distal end of the guide tube, and the both are connected by the connecting mechanism.・
Fix it. As a result, the inside of the body can be observed and diagnosed by inserting the endoscope guide device through which the endoscope is inserted into the body. Here, in order to perform the above-mentioned diagnosis smoothly and accurately, the distal end of the insertion portion of the endoscope should not be positioned too far behind the distal end of the guide tube, and should not damage the inner wall of the body cavity. Therefore, it is necessary to hold the insertion portion in a non-projecting state from the tip of the guide tube.

Since the endoscope is fixed at a predetermined position with respect to the endoscope guide device by the connecting mechanism, even if the distal end portion of the endoscope and the distal end portion of the guide tube are repeatedly attached and detached, their relative positions are not changed. It doesn't change. Therefore, the length of the insertion portion of the endoscope from the main body portion is adjusted in advance by the insertion portion length adjusting means. As a result, it becomes possible to favorably perform observation and diagnosis with an endoscope, and it is possible to prevent the inconvenience of damaging the inner wall of the body cavity by protruding the ultrafine insertion portion from the guide tube during insertion into the body cavity.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

First, in FIG. 1, reference numeral 1 denotes an endoscope, and 10 denotes an endoscope guide device, respectively. As shown in FIG. 2, the endoscope 1 has a main body portion at the distal end of the insertion portion 2 into the body. The insertion part 2 is constructed by connecting 3 in series, and the insertion part 2 is an ultra-thin one in which only a light guide for illuminating the inside of the body cavity and an image guide for transmitting the image of the observation target part are installed. The protective tube 4 is covered between the end of the main body 3 on the side of continuous connection to the intermediate position. Further, an eyepiece mechanism 5 is attached to the main body portion 3, a camera is attached to the eyepiece mechanism 5, and an LG flexible portion 6 only for connecting the light guide to the light source device is led out.

On the other hand, as is apparent from FIG. 3, the endoscope guide device 10 is provided with a guide tube 11, and the guide tube 11 has a small diameter for inserting the insertion portion 2 of the endoscope 1. It is made of a hollow soft member, and the operation portion 12 is connected to the base end portion thereof. The operating portion 12 has a holding portion 12a for the operator to hold by hand, and an angle operating lever 13 is provided at a position on the base end side of the holding portion 12a. The angle operation lever 13 is for bending the guide tube 11 only in one direction, and for this purpose, one operation wire (not shown) is attached to the tip of the guide tube 11. The other end of this operation wire is extended to the inside of the operation portion 12 and can be pushed and pulled by the angle operation lever 13. In this way, one operation wire
By using only a book, the diameter of the guide tube 11 can be reduced.

As shown in FIG. 4, a guide pipe 14 is inserted into the operation portion 12 in order to guide the insertion member such as the endoscope 1 into the guide tube 11, and one end of the guide pipe 14 is operated. It faces the opening 12c provided in the housing 12b of the portion 12. The other end of the guide pipe 14 is connected to a flexible tube 16 by a connecting portion 15, and the flexible tube 16 has a connecting portion.
It is connected to the guide tube 11 by 17. Also,
A cleaning liquid supply unit 18 is provided in the operation unit 12, and a pipe 19 from the cleaning liquid supply unit 18 is connected to the connecting unit 15 and joined to the guide pipe 14 and the flexible tube 16. Therefore, when the cleaning liquid supply unit 18 is connected to the cleaning liquid supply source and the cleaning liquid is supplied, the guide tube is connected from the connection unit 15.
The washing liquid can be supplied to the body through 11.

Next, a connecting mechanism between the endoscope 1 and the endoscope guide device 10 will be described with reference to FIG.

First, as the connecting mechanism portion on the endoscope guide device 10 side, the guide pipe 14 facing the opening 12c of the housing 12b of the operation portion 12 is used.
An airtight holding cylinder 20 as a connecting member is tightly fitted at the tip of the guide pipe 14, whereby the guide pipe 14 and the airtight holding cylinder 20 are integrated, and the inside of the operating portion 12 is held airtight. Further, the airtight holding cylinder 20 has a spring receiving member 21 and an engaging cylinder body 22.
Is attached, and a plurality of, for example, four through holes 22a are provided in the peripheral barrel portion on the distal end side of the engaging cylinder body 22, and the endoscope 1 is locked in each of the through holes 22a. Steel balls for 23
Is installed. In addition, the engagement cylinder 22 has a slide cylinder 24
And a spring 25 is mounted between the slide cylinder 24 and the end face of the airtight holding cylinder 20. And the spring
The slide cylinder 24 is biased in a direction projecting from the airtight holding cylinder 20 by 25, and is normally brought into contact with the stopper ring 26 mounted on the engagement cylinder 22.

Here, the inner peripheral surface of the slide cylinder 24 has a large diameter on the tip side,
The diameter is reduced on the way to form a cam surface 27 having a shape that comes into contact with the outer surface of the engaging cylinder body 22.
Can be displaced between a state in which it is projected from the inner surface side of the engagement cylinder 22 and a state in which it can be retracted to the outer surface side of the engagement cylinder 22.

On the other hand, as a coupling mechanism portion of the endoscope 1, a coupling portion mount 31 is provided so as to surround the lead-out portion of the insertion portion 2, and the coupling cylindrical body 22 is inserted into the coupling portion mount 31. The fitting connection tubular body 32 is inserted, and the continuous portion mount 31 and the connection tubular body 32 form a connection portion. Further, an annular recess groove 33 for engaging the steel ball 23 is provided on the outer peripheral surface portion of the connecting tubular body 32. Further, a holding tube 34 is screwed into the connecting tube body 32 in order to hold a portion of the protective tube 4 which is pulled out from the main body section 3, and a tightening rubber 35 is mounted in the holding tube 34. ing. Therefore, the engaging cylinder 22 and the steel ball 23 on the endoscope guide device 10 side and the locking groove 33 provided on the endoscope 1 side and with which the steel ball 23 engages, the endoscope 1 A connecting mechanism for detachably connecting / fixing to the airtight holding cylinder 20 of the endoscope guide device 10 is configured.

With the configuration described above, the endoscope 1 is configured so that the endoscope guide device 10
It can be attached and detached with one touch. That is, at all times, the slide cylinder 24 has the spring 25
By the action of, the state of engaging with the stopper ring 26 is established. In this state, the steel ball 23 is regulated by the cam surface 27, protrudes from the inner surface of the engagement cylindrical body 22, and is in the locking position for locking the endoscope 1 in a coupled state. Therefore, when the connecting cylinder 32 on the endoscope 1 side is inserted into the engaging cylinder 22,
The steel ball 23 is inserted into the recessed groove 33 provided in the connecting tubular body 32, so that the endoscope 1 is fixed in the axial direction,
Since the groove 33 is formed in an annular shape, the endoscope 1 and the endoscope guide device 10 are relatively rotatable.

On the other hand, when the slide cylinder 24 is pushed in the direction against the spring 25, the regulation of the steel ball 27 by the cam surface 27 is released, and the slide cylinder 24 can be retracted to the outer surface side of the engaging cylinder body 22. The connecting cylinder 32 of the endoscope 1 is pulled out from the engaging cylinder 22 on the endoscope guide device 10 side, and the two are separated. Then, in order to smoothly perform this separation, a pusher ring 28 is fitted on the inner surface of the engagement cylinder body 22.
A spring 29 that biases the pusher ring 28 in a protruding direction is mounted between the spring 28 and the spring receiving member 21.

Here, as described above, the endoscope 1 is replaced with the endoscope guide device.
When assembled into the endoscope 10, the tip of the insertion portion 2 of the endoscope 1 faces the tip of the guide tube 11 in the endoscope guide device 10 in a non-protruding state from the guide tube 11 and does not recede too far. The dimensions must be such that they are in position. However, in manufacturing, there is a case where the two cannot be formed in such a dimensional relationship. Therefore, when combining the endoscope 1 and the endoscope guide device 10, the length dimension of the insertion portion 2 of the endoscope 1 and the length dimension of the guide tube 11 of the endoscope guide device 10 are respectively adjusted. There is a need to. To this end, the endoscope 1
Is provided with an insertion portion length adjusting means for adjusting the length of the insertion portion 2. The adjusting tube length adjusting means is composed of an adjusting tube 36 connected to the base end of the inserting section 2.
36 is screwed into a screw cylinder 3a provided in the main body 3. Therefore, before the connecting portion mount 31 and the connecting cylinder body 32 are attached to the main body portion 3 of the endoscope 1, the adjusting tube 36 is appropriately screwed into the screw cylinder 3a.
The length of the insertion portion 2 can be adjusted by screwing it in and out. Then, after the length of the insertion portion 2 is adjusted, the adjustment pipe 36 is fixed using the set screw 37, whereby the insertion portion 2 is fixed in the adjusted length state.

By the way, the above-mentioned one-touch coupling mechanism is composed of a plurality of sliding members, a plurality of springs, steel balls and the like. Therefore, if cleaning liquid, body fluid or the like enters this portion, it is difficult to clean it. Further, since the endoscope 1 and the like are attached and detached by sliding the slide cylinder 24, when the slide cylinder 24 is in a state of being contaminated with cleaning liquid, body fluid, or the like,
It becomes difficult to operate the slide tube 24. Therefore, an annular recess 21a is formed on the inner surface of the spring receiving member 21, and the recess 21a is fitted with a Y seal 30 that expands toward the guide pipe 14 side.

Therefore, the insertion portion 2 of the endoscope 1 is inserted from the airtight holding cylinder 20 of the endoscope guide device 10, and the tip portion thereof is guided by the guide pipe 14.
The guide tube 11 is mounted so that it faces the tip portion of the guide tube 11, and the guide tube 11 is connected to each other by a connecting mechanism. As is apparent from FIG. The portion of 20 that is connected to the guide pipe 14 and the outside thereof, that is, the portion where the connecting mechanism is provided, are kept airtight.

In addition, in order to perform operations such as crushing and collecting calculi, the endoscope 1 is detached from the endoscope guide device 10, and as shown in FIG. Insert the tool 40. Here, in order to prevent the liquid from flowing back from the body when inserting the treatment tool 40, the valve member 41 is provided with an engaging cylinder.
It is designed to be inserted into 22.

The valve member 41 has a tubular portion 41a, and a check valve 42 made of an elastic member such as rubber is attached to the tip of the tubular portion 41a. A cutout 43 is formed in the check valve 42, and the treatment tool 40 is inserted through the cutout 43.
Then, on the outer peripheral surface of the tubular portion 41a, a locking concave groove 44 similar to the locking concave groove 33 provided in the connecting cylindrical body 32 of the endoscope 1 is formed, and the valve member 41 is inserted into the endoscope. When mounted on the guide device 10, the steel ball 23 is engaged in the locking recessed groove 44. In addition, the tip end portion of the tubular portion 41a is the recess 2 of the spring receiving member 21.
The inside of the airtight holding cylinder 20 can be held airtight by contacting the Y seal 30 provided in the inside 1a.

The present embodiment is configured in this way, and the adjustment tube 36 is appropriately screwed in and out to adjust the length between the insertion portion 2 of the endoscope 1 and the length of the endoscope guide device 10. When the endoscope 1 is previously mounted in the endoscope guide device 10,
The insertion portion 2 has such a dimensional relationship that the front end of the insertion tube 2 faces a predetermined position of the front end of the guide tube 11. Here, this dimensional relationship is such that when the body portion 3 of the endoscope 1 is fixed to the endoscope guide device 10, the tip of the insertion portion 2 does not protrude from the tip of the guide tube 11 and is located too far back. I will not do it. Since the adjusting tube 36 is covered by the connecting portion mount 31, the length of the insertion portion 2 is maintained in the adjusted state and the length thereof is changed after the adjustment once, unless the endoscope 1 is disassembled. I can't. However, the relative length between the insertion portion 2 and the guide tube 11 may change during use. In such a case, the connecting portion mount 31 and the connecting cylinder body 32 are detached from the main body portion 3 and the set screw is attached.
After loosening 37, the adjusting tube 36 is appropriately screwed into and out of the screw cylinder 3a to adjust the length of the insertion portion 2, and after adjusting the length of the insertion portion 2, set screw 37 is set. If tightened, the relative length of the insertion portion 2 to the guide tube 11 can be adjusted extremely easily.

Therefore, when inserting the endoscope assembly into the body, the insertion portion 2 of the endoscope 1 is inserted into the guide pipe 14 through the opening 12b formed in the operation portion 12 of the endoscope guide device 10, and The connecting cylinder 32 forming the connecting mechanism on the endoscope 1 side is replaced with the engaging cylinder 22 forming the connecting mechanism on the endoscope guide device 10 side.
Push it to the position where it fits inside. And the slide tube
24 is pushed in the direction against the spring 25, and once the restriction on the steel ball 23 is released. In this state, the endoscope 1 is pushed to a position where the recessed groove 33 of the connecting tubular body 32 faces the disposition position of the steel ball 23, and when the pushing force of the slide barrel 24 is released, the slide barrel 24 springs. By the action of 25, it projects to a position where it engages with the stopper ring 26, and the cam surface 27 causes the steel ball 23
Protrudes toward the inner surface of the engagement cylinder 22 and engages in the groove 33.
As a result, the endoscope 1 is securely fixed in the state of being connected to the endoscope guide device 10, and the position of the insertion portion 2 is not excessively shifted, and the distal end portion of the insertion portion 2 is guided by the guide tube 11. Is held in a position facing the tip of the. As a result, the insertion portion 2 does not project from the guide tube 11 when it is inserted into the body, so that the insertion operation can be performed safely.

Then, the guide tube 11 having the insertion portion 2 installed therein is guided to a predetermined observation target portion and the observation is performed.
Since the tip of the light guide is arranged extremely close to the tip of the guide tube 11, the light guide of the insertion section 2 illuminates a wide range with a sufficient light quantity,
In addition, a wide observation field of view can be obtained through the image guide. As a result, observation and diagnosis can be performed with high accuracy.

Further, at the time of observation, if the observation target portion is contaminated with body fluid or the like, accurate observation becomes impossible. For this reason, the cleaning liquid is supplied from the guide tube 11 to the inside of the body through the cleaning liquid supply unit 18 provided in the operation unit 12 of the endoscope guide apparatus 10, but the holding cylinder 34 of the insertion unit 2 of the endoscope 1 is Endoscope guide device 10
Y attached to the spring receiving member 21 installed in the airtight holding cylinder 20
Since it is in contact with the seal 30, the cleaning liquid does not leak to the coupling mechanism side. Further, even when the observation target portion is filled with body fluid, even if the body fluid flows from the guide tube 11 into the airtight holding cylinder 20 through the guide pipe 14, there is no possibility of leaking to the coupling mechanism side. Therefore, the coupling mechanism is not contaminated, and it is difficult to attach and detach the coupling mechanism, and troubles such as troublesome cleaning do not occur.

Next, in order to insert the treatment tool 40 in place of the endoscope 1, the connection between the endoscope 1 and the endoscope guide device 10 in the connection mechanism is released, and the endoscope 1 is inserted. The endoscope guide device 10 is extracted from the endoscope guide device 10 and left in the body as it is. When the withdrawal of the endoscope 1 is completed, the valve member 41 is first attached to the engagement cylinder 22. The valve member 41 is also attached by the same method as when attaching the endoscope 1.
As a result, the steel ball 23 mounted on the engagement cylinder 22 is engaged in the locking groove 46 of the valve member 41, so that the valve member 41 is fixed in the engagement cylinder 23. Therefore, inside the airtight holding cylinder 20, the cylinder portion 41a of the valve member 41 abuts the Y seal 30, and the check valve 41 is provided at the tip of this cylinder portion 41a. Since it is kept airtight, bodily fluids, cleaning fluids, etc. do not leak out.

Then, the notch provided in the check valve 42 in the valve member 41
By inserting the treatment tool 40 through 43 and projecting the tip of the treatment tool 40 from the guide pipe 14, desired treatment, treatment, etc. can be performed. At this time, although the inside of the body cannot be observed with an endoscope, if the operation is performed while observing using an X-ray, for example, the above-described treatment can be smoothly performed.

Further, after performing a predetermined treatment using the treatment instrument 40, in order to observe the inside of the body cavity again to confirm whether or not the treatment has been appropriately performed, the treatment instrument 40 is guided by the endoscope guide. Device 10
Then, the valve member 41 may be removed from the engaging cylinder body 21 and the endoscope 1 may be mounted in the endoscope guide device 10.

The connecting mechanism between the endoscope guide device 10 and the valve member 41 for mounting the endoscope 1 and the treatment tool 40 is not limited to the one described above, and various one-touch connecting mechanisms and screw-in type The thing etc. can be used.

[Advantages of the Invention] As described above, according to the present invention, the endoscope is removably connected to the connecting member connected to the operating portion via the connecting mechanism so that the endoscope is stabilized. The insertion portion length adjustment is performed to adjust the length of the insertion portion so that the distal end of the insertion portion of the endoscope does not protrude from the distal end of the guide tube to a predetermined position. Since the means is provided, when the endoscope is mounted on the endoscope guide device, the distal end portion of the insertion portion of the endoscope can be held in a non-protruding state with respect to the distal end of the guide tube. During operation, it can be inserted safely without damaging the inner wall of the body cavity, and it can be placed near the tip of the guide tube. Can affect the range In addition, the observation under such illumination can cover a wide range, and the accuracy of observation and diagnosis can be remarkably improved. Further, the insertion portion length adjusting means can be touched in a normal state. No, because it is provided so as to surround the connecting section that is detachably connected to the main body of the endoscope, the position is mistakenly adjusted after adjusting the positional relationship between the tip of the insertion section and the tip of the guide tube. Since it can be held in a very stable positional relationship without causing the situation of, it is extremely advantageous especially from the viewpoint of safety, and by separating the connecting portion from the main body portion as necessary,
The positional relationship between the tip of the insertion portion and the tip of the guide tube can be readjusted.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is an external view of an assembled state of an endoscope apparatus, FIG. 2 is an external view of a main portion of an endoscope, and FIG. 3 is an endoscope guide apparatus. FIG. 4 is an explanatory view of the configuration of the insertion path of the endoscope guide device, FIG. 5 is a cross-sectional view of the connecting mechanism with the endoscope attached, and FIG. 6 is the valve member attached. It is sectional drawing of the connection mechanism in the state which it did. 1: endoscope, 2: insertion part, 3: main body part, 10: endoscope guide device, 11: guide tube, 12: operating part, 14: guide pipe, 15, 17: connecting part, 16: flexible tube , 18: cleaning liquid supply part, 20: airtight holding cylinder, 21: spring receiving member, 21a: recess, 22:
Engaging cylinder, 22a: through hole, 23: steel ball, 24: slide cylinder, 30: Y seal, 32: connecting cylinder, 33: concave groove, 34: holding cylinder, 40: treatment tool,
41: valve member, 41a: cylinder part, 42: check valve.

Claims (1)

[Scope of utility model registration request] 1. An endoscope guide device in which a guide tube is continuously provided to an operation portion, and an insertion passage is formed from the operation portion to the guide tube; and an endoscope in which an insertion portion is continuously provided to a main body portion. And a connection member that connects the operation member to the operation member in an airtight state, and detachably connects the main body portion with the insertion portion of the endoscope inserted through the insertion passage in the connection member. A mechanism is attached, and the endoscope can be fixed by the connecting mechanism, and the insertion portion of the endoscope is located at a predetermined position in a non-projecting state from the tip of the guide tube.
An endoscope apparatus characterized in that an insertion portion length adjusting means for adjusting the length of the insertion portion is provided at a position surrounded by a connecting portion detachably connected to the main body portion.