JPH07184832A - Cover type endoscope - Google Patents

Abstract

PURPOSE:To provide a cover type endoscope which enables recognition of an insertion value of an endoscope for a cover visually mounted on an endoscope cover easily from a direction whatsoever. CONSTITUTION:An insertion part cover part 22 of an endoscope cover 20 is, for example, a black thin flexible tube 27 having a semi-circular through holes 27a and 27b. A circumferential line 28a is printed on the external surface thereof at an interval of 10 cm axially on the entire circumference of the flexible tube 27 as indicator to inform an operator of an insertion value of the insertion part of a cover type endoscope while a depth display 28b for indicating an insertion value at the position of the circumferential line is printed in a zigzag array viewed axially at four points at an interval of about 90 deg. in the circumferential direction of the circumferential line 28a. Thus, an operator can recognize the insertion value easily by twisting the insertion part of the cover type endoscope even if the endoscope cover 20 is left twisted without returning to the original position after once turned with respect to the insertion part of the endoscope for a cover.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover-type endoscope in which the insertion amount of a cover endoscope covered with an endoscope cover into a body cavity can be recognized from any direction.

[0002]

2. Description of the Related Art Conventionally, during endoscopic examination, it has been necessary to thoroughly wash and disinfect the endoscope before the examination in order to prevent infections caused by the endoscope. Then, when the endoscope once inserted into the body cavity of the patient is reused, the endoscope is washed and disinfected. However, sufficient cleaning and disinfection of the endoscope is a time-consuming and cumbersome task. Therefore, in recent years, instead of the endoscope that is washed and disinfected and reused after the examination (hereinafter referred to as the reuse type endoscope), a cover is attached to the endoscope and the endoscope is inserted into the body cavity and the examination is completed. A so-called cover-type endoscope has been proposed, in which a disposable cover that later discards and replaces only the cover that covers the endoscope is attached to the endoscope.

In Japanese Patent Publication No. 2-54734, a tube having a flexible thin wall is used to cover an endoscope insertion portion and an endoscopic examination is performed to prevent contamination of the endoscope insertion portion. What is done is shown.

By the way, in order to know which part is being inspected in order to insert an endoscope having a long and thin insertion portion into the lumen for the inspection and treatment in the endoscopy, It is important to know how much the endoscope insert is inserted into the lumen. For this reason, it is common to provide an index for knowing the insertion amount in the insertion portion of the reuse type endoscope which has been used conventionally.

In endoscopic examination, it is necessary to insert an endoscope into a three-dimensional lumen, and a twisting operation is indispensable in order to insert the endoscope insertion portion into a target site. For example,
While twisting the endoscope insertion part, pull out the folds of the large intestine,
The technique of inserting it to the deeper part is often used. With a reusable endoscope in which the insertion part and the operating part are connected, after twisting the insertion part as necessary and releasing the hand holding the insertion part, the operating part is grasped in a predetermined direction by one hand. The twist of the insertion part is naturally resolved and the original state is restored. For this reason, if an index is provided at a predetermined position of the insertion part to know the insertion amount, when the hand holding the insertion part is released, the index can be checked directly by pointing the operation part to the predetermined position. We were able to.

[0006]

However, in the cover type endoscope disclosed in Japanese Patent Publication No. 2-54734,
Since the cover that covers the endoscope insertion part is thin and there is no rotation stop that restricts rotation between the cover and the endoscope insertion part, twisting the cover-type endoscope insertion part with the cover attached The cover slips on the endoscope insertion part. Therefore, when the hand holding the cover-type endoscope insertion portion is released, the insertion portion of the cover endoscope connected to the operation portion returns to the position corresponding to the operation portion, but the insertion of the cover endoscope The cover rotated with respect to the part may not return to its original position in a twisted state, and it is not possible to visually recognize the index that should be in place, so the operator can change the direction of the body and peek at the index. There was a problem that it had to be.

The present invention has been made in view of the above circumstances, and provides a cover type endoscope in which the insertion amount of a cover endoscope mounted on an endoscope cover can be easily visually recognized from any position. To do.

[0008]

SUMMARY OF THE INVENTION A cover-type endoscope according to the present invention comprises a cover-type endoscope having at least an objective optical system incorporated therein.
What is claimed is: 1. A cover-type endoscope in combination with an endoscope cover having an insertion-portion cover portion that covers the insertion portion of the cover endoscope, the cover-type endoscope being provided on the outer surface of the insertion-portion cover portion of the endoscope cover. An index is provided so that the insertion amount of the mirror insertion portion can be visually recognized from any direction.

[0009]

With this configuration, when confirming the insertion amount of the cover-type endoscope insertion portion, the operator can easily adjust the index provided on the endoscope cover without changing the position or twisting the body. Can be seen.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 relate to an embodiment of the present invention.
2 is an explanatory diagram showing a schematic configuration of the endoscope apparatus, FIG. 2 is an explanatory diagram showing a configuration of an insertion portion cover portion, FIG. 3 is a diagram illustrating connection of a suction tube to a mouth portion, and FIG. 4 is a cover tip portion. For explaining the attachment of the channel tube to the cover, FIG. 5 is a diagram showing the overall structure of the insertion portion cover portion, FIG. 6 is a cross-sectional view of the cover tip portion, and FIG. 7 is the attachment of the tip constituent portion to the cover tip portion. It is a figure.

As shown in FIG. 1, the endoscope device includes a bending portion 1
The cover endoscope 1 including the insertion portion 12 having one, the operation portion 13, the universal cord 14, the connector 15, and the like.
0, an endoscope cover 20 including an operation portion cover portion 21 and an insertion portion cover portion 22 respectively covering the operation portion 13 and the insertion portion 12 of the cover endoscope 10, the cover endoscope 10 and the inside. It is composed of a cart 30 in which various peripheral devices connected to the endoscope cover 20 are installed.

The operating portion 13 is provided with a bending knob 16 for bending the bending portion 11 in a desired direction, an engagement lever 17 for selecting lock / free of the bending state of the bending portion 11, and the like. There is.

The insert portion cover portion 22 is formed of a flexible lumen member, and a lens cover (not shown) and each channel for air supply, water supply, and suction are provided on the distal end surface of the insert portion cover part 22. An opening communicating with the tube 26 is formed. To the rear end portion of the insertion portion cover portion 22, a mouth body portion 24 having a treatment instrument insertion opening 23 that engages with the cover endoscope operation portion 13 is connected. Reference numeral 25 is a flexible tubular transparent bag that covers the insertion portion cover portion 22.

A monitor 31, a camera control unit 32, a light source device 33, a fluid control device 34 and the like are housed in the cart 30, and a cover endoscope hanger 35 and an insertion portion are provided on the side surface of the cart. A cover hanger 36 is attached, and a white balance adjuster 37 is placed on the upper surface of the cart.

As shown in FIG. 2, the insertion portion cover portion 22 of the endoscope cover 20 has semi-circular through holes 27a and 27b.
For example, it is a black and thin flexible tube 27, and the outer surface of the flexible tube 27 serves as an index 28 to inform the operator of the insertion amount of the cover-type endoscope insertion portion at intervals of 10 cm around the entire circumference of the flexible tube 27. The peripheral line 28a is printed, and depth indications 28b indicating the insertion amount of the peripheral line position are provided at four positions in the circumferential direction at intervals of approximately 90 degrees.
Printed in a staggered arrangement when viewed from the axial direction.

The through hole 27a is for inserting a cover endoscope, and the through hole 27b is for inserting a channel tube for a conduit. Further, it is better to print a part of the peripheral line 28a rather than to print it all around.

The flexible tube 2 printed with the index 28 as described above.
The insert portion cover portion 22 is formed by assembling 7 as follows. As shown in FIG. 3, the flexible tube 27
The cover endoscope insertion opening 24a, which is formed slightly larger than the outer diameter of the endoscope so as to correspond to the through holes 27a and 27b of the endoscope, the through hole 24b for the air supply channel tube, the through hole 24c for the water supply channel tube, and the suction tube. The suction tube 41 is connected to the mouth portion 24 having the through hole 24d for use therein. The treatment instrument insertion hole 23 provided in the mouth body portion 24 communicates with the suction tube through hole 24d, and a treatment instrument such as forceps can be inserted into the proximal end portion and is soiled with dirt when the treatment instrument is inserted. Forceps plug 23a formed with a cross-shaped slit for preventing
Is provided. The suction tube through hole 24
Alternatively, d may be formed as a stepped hole, and the suction tube 41 may be abutted and fixed to the stepped portion.

Mouth part 2 to which the suction tube 41 is connected
4 is fixed to the proximal end of the flexible tube 27 as shown in FIG. Reference numeral 24e is a semicircular step.

As shown in FIG. 4, the tip end portion of the cover tube 51 is provided at the tip end portion of the flexible tube 27 so as to correspond to the through holes 27a and 27b of the flexible tube 27. The cover endoscope insertion opening 51a, the air supply channel through hole 51b, and the water supply channel through hole 51, which have substantially the same shape as the external shape of
c, a suction through hole 51d is formed. The air supply channel tube 42 and the water supply channel tube 43 are connected and fixed to the air supply channel through hole 51b and the water supply channel through hole 51c.

The tip surface of the cover tip portion 51 is shown in FIG.
As shown in FIG. 3, a lens cover 52 having a three-leaf shape, which is opposed to the observation optical system and the illumination optical system provided in the cover endoscope, is fixed by a method such as adhesion or welding. The cover tip 51 is, for example, black, and the tongue piece 53 is located in the concave portion of the lens cover 52 to prevent flare ghost caused by unnecessary light from the illumination optical system entering the observation optical system. is doing. Further, reference numeral 54 is a nozzle for removing dirt and the like attached to the lens cover 52.

Then, as shown in FIG.
The air supply channel tube 42 and the water supply channel tube 43 which are connected and fixed to 1 are inserted into the through holes 27b, and the cover tip portion 51 is fixed to the flexible tube 27 to form the insertion portion cover portion 22. The through hole 27b forms a suction conduit by connecting the suction through hole 51d formed in the cover tip portion 51 and the suction tube through hole 24d formed in the mouth portion 24. Further, the channel tube is inserted into the through hole 27b, and the suction through hole 51d and the suction tube through hole 2 are formed.
4d may be communicated with each other to form a forceps conduit, and an air supply / water supply conduit may be formed in another space.

As shown in FIG. 6, a groove 55 is provided on the entire circumference of the side surface of the cover tip portion 51. A hole 55a communicating with the through hole 27a is formed in a part of the groove 55.
A convex piece 56 is arranged in the groove 5a and the groove 5a. This convex piece 5
6 is a through hole 27 formed by a ring 57 formed of an elastic member such as an elastomer material fitted in the groove 55.
It is pressed to the side a and the tip portion is projected into the through hole 27a. The convex piece 56 is provided with a clearance a so that it can move in the direction of the arrow, and when the convex piece 56 moves to the upper side of the arrow, the tip end becomes substantially flush with the inner peripheral surface of the through hole 27a.

The operation of the cover-type endoscope formed as described above will be described. First, as shown in FIG. 7, the endoscope cover 2
The cover endoscope 10 is inserted into the cover endoscope 10. At this time, for example, air is directed to the distal end side from the inflating conduit 16 formed in the cover endoscope 10 in communication with the air supply pump built in the light source device 33. Is releasing. Therefore, the inside of the insertion portion cover portion is expanded and smoothly inserted into the distal end side. Further, as the internal pressure of the cover tip portion 51 rises, the convex piece 56 presses the ring 57 and moves to the upper side of the arrow, and the cover endoscope tip portion 18 is inserted into a predetermined position. Here, when the air supply is stopped, the convex piece 56 moves to the lower side of the arrow and engages with the concave portion 19 provided in the cover endoscope distal end portion 18 to be positioned and fixed.

Next, the cover-type endoscope formed by mounting the cover endoscope 20 on the endoscope cover 20 is inserted into the body cavity. At this time, the bending portion 22 is bent,
The insertion portion 12 is twisted and pushed to the deep portion, and the operator always visually recognizes the index 28 printed on the insertion portion cover portion 22 of the endoscope cover 20 and how much the cover-type endoscope insertion portion is inserted. I have confirmed. It should be noted that the cover endoscope 10 and the endoscope cover 20 have a convex piece 56 and a concave portion 1.
Since they are engaged with each other, the optical performance and the like are not deteriorated during the bending operation and the twisting operation without the positional deviation.

As described above, the peripheral line and the depth display indicating the insertion amount of the peripheral line are printed on the outer surface of the insertion section cover portion constituting the endoscope cover at four positions every 90 degrees along the peripheral line. As a result, the operator can easily visually check the insertion amount without twisting the insertion portion and returning the cover rotated with respect to the insertion portion of the cover endoscope in the twisted state.

FIG. 8 is a perspective view showing an insertion portion cover portion according to a modification of the present invention. As shown in FIG. 8, in this embodiment, the depth indications provided on the peripheral line 28a printed at intervals of 10 cm are provided at two positions at 180 ° intervals instead of at four positions at 90 ° intervals along the peripheral line. I am trying. If the length from the tip is 1m, print 1M and print 1m.
If the number exceeds m, the m portion is deleted and, for example, 1 m 10 cm is printed as 10. Furthermore, the suction tube through hole 24d is formed with a branch portion 23b in the treatment instrument insertion port 23, and the suction tube 41 is connected to the branch portion 23b. In addition, two through holes 27a and 27b are provided in the mouth portion 24 with through holes 29 of the same shape, and after the channel tube is inserted, they are watertightly filled with an adhesive agent 29a. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.

As described above, the depth indication provided on the peripheral line indicating the length from the tip end portion is changed from four positions at 90 ° intervals to two positions at 180 ° intervals along the peripheral line, whereby the axial direction can be reduced. Since it is a staggered arrangement, when viewed from any direction,
The insertion amount can be seen at intervals of at least 20 cm.

FIG. 9 is a perspective view showing an insertion portion cover portion according to an application example of the present invention. As shown in the figure, in the present embodiment, the tip cover portion 51 and the flexible tube 27 are connected to the air supply conduit 61,
A multi-lumen tube 65 having four lumens, a water supply conduit 62, an endoscope through hole 63 through which an endoscope having an observation optical system is inserted, and an illumination through hole 64 through which a hollow cylindrical rubber fiber is inserted. Is forming. Then, the air supply line 61
A nozzle 66 is provided in the water supply conduit 62, and the lens cover 6 is provided in the opening of the endoscope through hole on the distal end surface.
7 are arranged.

On the outer surface of the multi-lumen tube, depth indicators 28b are provided as indexes 28 at sixty-degree intervals in six axial directions. Further, the lens cover 67 disposed on the tip surface is flush with the tip surface, or
It is arranged so as to project from the tip surface. Other configurations and operations are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and their description is omitted.

As described above, since the indexes are provided at intervals of 60 degrees in the circumferential direction, the insertion amount can be easily visually recognized from any direction, and the depth indications are aligned in the axial direction, so that the twisting is possible. The condition can be seen at a glance, and damage due to increased torsion can be prevented. Further, since the illumination optical system is made of rubber fiber, it is flexible, and the flexibility of the insertion portion is not impaired, resulting in an inexpensive structure. Furthermore, since the nozzle and lens cover are attached to the tip surface of the multi-lumen tube, the structure is simplified,
It is possible to provide an inexpensive cover-type endoscope.

FIG. 10 is a perspective view showing an insertion portion cover portion according to the modified example of FIG. As shown in the figure, in this embodiment, instead of providing the depth indicators 28b, which are the indexes 28, at six positions at 60-degree intervals in the axial direction, the depth indicators 28b are seen at three positions in the circumferential direction at 120-degree intervals from the axial direction. A zigzag arrangement is provided, and the depth display 28b and the depth display 28b are connected by a peripheral line 28a. Then, instead of adhering the lens cover 67 to the tip end surface, an air supply conduit 61, a water supply conduit 62 and a suction conduit 63.
A transparent thin film 71 made of polyethylene or the like having a through hole 71a is formed so as to be opposed to the opening of the above. Further, the same action and effect as described above are obtained by firmly adhering to the side surface of the tip end surface by heat welding, adhesion or the like to ensure watertightness. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.

Instead of sticking the transparent thin film 71, as shown in FIG. 11, a thin wall having the same shape as the front end surface of the insertion section cover 22 or slightly smaller than the front end surface of the insertion section cover 22. By forming the film 72 and adhering it only to the distal end surface of the insertion portion cover portion 22, the outer diameter does not have to be large because no adhesive portion is formed on the side surface. The thin film plate may be a semi-hard or hard transparent plate.

FIG. 12 is a view showing another example of the insertion portion cover portion formed of a multi-lumen tube.

As shown in FIG. 12, the insertion section cover 22 formed of the multi-lumen tube 65 of this embodiment has two
The two semicircular lumens 27a and 27b are formed in the same manner as in the above-described embodiment, and the peripheral line 28a of the index 28 is set to 1 on the outer surface.
It is provided at intervals of 0 cm, and depth indicators 28b are provided at intervals of 20 cm. Further, the suction tube 73 extending from the suction port 51d of the cover front end portion 51 disposed at the front end portion of the multi-lumen tube 65 is the first suction tube 73a and the second suction tube 73a.
And the suction tube 73b. That is,
The first suction tube 73a is connected to a suction port 51d formed in the cover distal end portion 51 and extends to a position behind the rear end portion of the bending portion of the cover endoscope 10 inserted into the insertion portion cover portion 22, At this position, when the second suction tube 73b is slidably curved to the first suction tube 73a, the engaging portion 74 is formed and fitted externally so as not to fall off. Other configurations are the same as those of the above-described embodiment, the same members are designated by the same reference numerals, and description thereof will be omitted.

When the cover-type endoscope thus constructed is bent, the suction tube is slidably engaged with the first suction tube and the second suction tube, so that the cover is covered. When the bending endoscope is operated, the first suction tube and the second suction tube slide at the engaging portion, and the treatment instrument passes smoothly without causing the suction tube to meander or buckle. Turn at. Further, by smoothly sliding the first suction tube and the second suction tube, the force required for bending can be reduced. Other functions and effects are similar to those of the above-mentioned embodiment.

It is conceivable that the suction liquid or the like may leak from the engaging portion between the first suction tube and the second suction tube, but since the lumen and the lumen are completely watertightly isolated, dirt, etc. Does not touch the endoscope for the cover that inserts the lumen. Further, since the lumen is sealed to the outside, the suction function can be exhibited without any problem. Furthermore, as shown in FIG. 13, the same action and effect can be obtained even if the first suction tube 73a is externally fitted to the second suction tube 73b.

Finally, the pre-inspection procedure and the post-inspection procedure of the above-mentioned endoscope system will be briefly described. First, the cover endoscope 10 is taken out of the storage and set on the endoscope hanger 35. The connector of the endoscope is connected to the camera control unit 32, the light source device 33, and the fluid control device 34. Wipe off dust on the lens surface of the endoscope and dust on the insertion part with alcohol cotton. Then, the endoscope cover 20 packed in a sterilized state is taken out and placed on the disinfected cover hanger 36. At this time, it is desirable to work with clean hands so as not to accidentally stain the insertion portion cover portion 22 covered with the transparent bag 25, but there is no problem even if the transparent bag 25 is touched with unclean hands.

Next, each conduit tube 26 is set in the fluid control device 34. The power of the light source device 33 is turned on, and air is supplied into the endoscope cover. At this time, the bending portion of the cover endoscope 10 is locked in a straight state and inserted. If the bending portion is bent or is easily deformed by an external force, the insertion is difficult. At this time,
The insertion is easier if the curved portion is locked straight and the entire insertion portion is made rigid in a straight shape. In order to assist the insertion, a powder such as corn starch which is harmless to the human body may be attached to the insertion portion cover portion 22 and then inserted.

After inserting the insertion portion 12 into the insertion portion cover portion 22, it is confirmed by touching by hand whether the cover front end portion 51 and the front end forming portion 18 are firmly engaged. Insufficient engagement can result in disengagement during inspection and loss of visual field. Further, touching the entire length of the insertion portion cover portion 22 with the hand, it is confirmed that the fluid conduits do not intersect. If they intersect, they are squeezed from the top of the insertion portion cover 22 to bring them into a normal state, or they are once removed and reinserted. At this time, it is confirmed that the observation optical system and the lens cover 52 are not dirty.
It should be noted that it is not always necessary to perform the work with clean hands because the transparent cover 25 does not directly touch the insert cover 22 while the insert cover 22 is covered with the insert cover 22 during these operations.

After the cover endoscope insertion portion 12 is attached to the insertion portion cover portion 22, the air supply is stopped, the transparent bag 25 is removed, and the clean operation portion cover 21 is removed with clean hands. Attach to. After this, white balance is taken and the preparation for endoscopy is complete.

After the end of the endoscopic examination, it is desirable to prepare a hanger similar to the hanger used for preparation for removing the cover in consideration of hygiene. First, the operation part cover 21 is removed so as not to touch the operation part 13 and discarded, or it is sterilized after cleaning and reused.

Next, the operating portion 13 is lifted with a clean hand and the cover endoscope insertion portion 12 is pulled out from the insertion portion cover portion 22. At this time, the light source device 33 can be easily removed by turning on the light source device 33 and removing the light while supplying air.

At the time when all the inspections for one day are completed, the cover endoscope 10 is washed and disinfected to remove various germs, dried sufficiently, and then stored in a storage cabinet. When using the cover in which the treatment instrument standing device is built in the insertion portion cover portion 22, the treatment instrument standing operation device (not shown) is connected at the place where the cover endoscope is set on the endoscope cover.

[0044]

As described above, according to the present invention, there is provided a cover-type endoscope in which the insertion amount of the cover endoscope mounted on the endoscope cover can be easily visually recognized from any position. be able to.

[Brief description of drawings]

FIG. 1 to FIG. 7 relate to an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing a schematic configuration of an endoscope apparatus.

FIG. 2 is an explanatory diagram showing a configuration of an insertion portion cover portion.

FIG. 3 is a diagram for explaining connection of a suction tube to a mouth part.

FIG. 4 is a diagram for explaining how to attach the channel tube to the tip of the cover.

FIG. 5 is a diagram showing an overall configuration of an insertion section cover section.

FIG. 6 is a sectional view of the tip of the cover.

FIG. 7 is a diagram showing the attachment of the tip component to the cover tip.

FIG. 8 is a perspective view showing an insertion portion cover portion according to a modified example of the present invention.

FIG. 9 is a perspective view showing an insertion portion cover portion according to an application example of the present invention.

FIG. 10 is a perspective view showing an insertion portion cover portion according to the modified example of FIG. 9;

FIG. 11 is a perspective view showing another example of the thin film.

FIG. 12 is a view showing another example of the insertion section cover section formed by the multi-lumen tube.

FIG. 13 is a cross-sectional view showing another example of the configuration of the suction tube.

[Explanation of symbols]

 22 ... Insert section cover section 28 ... Index 28a ... Perimeter line 28b ... Depth display

Claims (1)

[Claims] 1. A cover-type endoscope in which a cover endoscope having at least an objective optical system built-in and an endoscope cover having an insertion portion cover portion for covering an insertion portion of the cover endoscope are combined. An insertable portion of the endoscope cover is provided with an index on the outer surface of the cover portion so that the insertion amount of the cover-type endoscope insertion portion can be visually recognized from any direction.