JPH08131396A - Endoscope cover - Google Patents

Abstract

PURPOSE: To provide an endoscope cover which improves the attachability of an endoscope to the endoscope cover. CONSTITUTION: An inserting part-covering part 22 of a cover 3 is made up of a casing tube 18 to isolate an inserting part 14 from outside, a base end built part 20 provided at a user's hand-side terminus of the casing tube 18 and a cover tip part 25 provided on the tip side of the casing tube 18. The casing tube 18 is connected to a tube connection port part 55 formed on the tip side of the base end built part 20. A protective tube 46 is arranged in the tube 18 fixed near the base end built part as a partition member to divide the inside of the casing tube into an inserting part-insertion channel 51 and a pipeline channel 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope cover having conduits for inserting a treatment tool, an air supply conduit, a water supply conduit, and more particularly, to improve the insertability of the cover endoscope. Regarding an endoscope cover.

[0002]

2. Description of the Related Art Conventionally, in order to prevent infections caused by an endoscope during an endoscopic examination, the endoscope has been thoroughly washed and disinfected after the examination. However, the work of completely cleaning and disinfecting the endoscope once inserted into the body cavity of the patient is time-consuming and cumbersome. Therefore, in recent years, when performing an endoscopic examination, the endoscope for a cover is inserted into the body cavity while being covered with the endoscope cover, and the examination is performed. After the examination, the used endoscope cover is discarded and the examination ends. The endoscope is designed so that it will not become dirty afterwards, and it will be used for the next examination by covering the endoscope with a new endoscope cover without cleaning or sterilizing it. A cover type endoscope apparatus has been proposed.

In this endoscope system of the endoscope cover system,
An observation optical system and an illumination optical system that are connected to the body cavity and that may be contaminated by touching the body fluid of the subject are formed on the endoscope cover side so that there is no concern of contacting body fluid in the body cavity. Is provided on the side of the cover endoscope.

Further, as an endoscope cover of an endoscope device of an endoscope cover system, a treatment instrument insertion conduit, an air supply conduit, a water supply conduit, etc. are formed in Japanese Patent Application No. 5-31804. The duct is placed in a soft outer tube that covers the insertion part of the endoscope for cover, while the flexible protection is provided to prevent the duct placed in this outer tube from turbulence or buckling. The tube is shown in an outer tube.

[0005]

However, no consideration has been given to the method of fixing the protective tube to the inside of the outer tube to prevent the occurrence of turbulence and buckling of the conduit, so the endoscope for a cover is not considered. When attaching to the endoscope cover, the insertion portion of the cover endoscope is caught by the protective tube in the outer tube, and when the cover endoscope is further inserted into the outer tube in this state. , The protective tube moves in the insertion direction of the cover endoscope, making it impossible to insert the cover endoscope, or the protective tube clings to the cover endoscope insertion part and the insertability deteriorates. For example, there is a problem that it takes time to mount the cover endoscope on the endoscope cover.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope cover in which the workability of mounting the cover endoscope on the endoscope cover is easy.

[0007]

The endoscope cover of the present invention is an endoscope cover that constitutes a cover-type endoscope by covering the cover endoscope, and the cover endoscope is inserted. For the inside of the exterior member that constitutes the insertion part cover part that covers the part, the space part for inserting the conduit for inserting the conduits such as the treatment instrument insertion conduit, the air supply conduit, the water supply conduit, and the cover An endoscope cover having a partition member that is divided into an endoscope insertion space into which an insertion portion of an endoscope is inserted, wherein at least a part of a proximal end of the partition member covers the insertion portion cover. It is fixed near the end on the proximal side of the exterior member forming the part.

[0008]

According to this construction, when the cover endoscope is inserted into the insertion portion cover portion, even if the cover endoscope insertion portion is caught by the partition member, this partition member constitutes the insertion portion cover portion. Since it is fixed near the end of the exterior member on the proximal side, the partition member does not turn or move, and it is inserted into the space for inserting the endoscope in the exterior member. The endoscope moves to the tip side smoothly.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 relate to a first embodiment of the present invention, FIG. 1 is a perspective view showing a schematic structure of an endoscope apparatus of an endoscope cover system, and FIG. 2 is a sectional view showing a structure of a cover type endoscope. Figure, Figure 3
4 is a cross-sectional view showing a configuration in the vicinity of a base-end component, FIG. 4 is a cross-sectional view in the vicinity of an outer tube of a cover-type endoscope, and FIG. is there.

As shown in FIG. 1, an endoscope cover type endoscope apparatus 1 is an apparatus having an endoscope cover type endoscope (hereinafter referred to as a cover type endoscope) 2.

The cover type endoscope 2 includes an endoscope cover (hereinafter abbreviated as a cover) 3 and an endoscope cover endoscope (hereinafter abbreviated as a cover endoscope) mounted on the cover 3. 4) is combined.

When performing an endoscopic examination, a clean cover 3
The insertion portion of the cover endoscope 4 and the like are covered with the cover 3 and the cover 3 covering the cover endoscope 4 is discarded after the inspection. On the other hand, the cover endoscope 4 is characterized by being covered again with a new clean cover 3 and used repeatedly. This makes it unnecessary to clean and disinfect the endoscope for each case.

The endoscope apparatus 1 includes a cover type endoscope 2
And a cart 5 loaded with various peripheral devices connected to the cover-type endoscope 2 and a cover holder 6 for holding the cover-type endoscope 2.

The cart 5 contains, for example, a light source device 7, a video processor 8, a fluid control device 9 and the like. A monitor 10 for receiving an image signal from the video processor 8 and displaying an endoscopic image is mounted on the upper surface of the cart 5.

In the cover endoscope 4, an operation portion 12 also serving as a large-diameter grip portion is continuously provided at an end portion of a slender endoscope insertion portion 14 on the proximal side, and a universal portion is provided from a side portion of the operation portion 12. The cord 13 is extended. The connector 13a provided at the end of the universal cord 13 is connected to the light source device 7 described later.

The light source device 7 is detachably connected to the cover endoscope 4 through the connector 13a so as to supply illumination light to the cover endoscope 4. The video processor 8 is detachably connected to the cover endoscope 4 via the signal connector 21a of the signal cable 21 extending from the side portion of the connector 13a, and is incorporated in the cover endoscope 4. The driving of the means and the signal processing of the signal output from the image pickup means are performed, and the signal is converted into a standard video signal and output to the monitor 10.

The cover 3 is attached to the cover endoscope 4,
Alternatively, when detaching, the cover holder 6 is used, and for example, the hard proximal portion 20 of the cover 3 is held by the cover holder 6 and the cover endoscope 4 is inserted or withdrawn.

The cover 3 is arranged on the distal end side of the base end constituent part 20 and covers the insertion part 14 of the cover endoscope 4, and the cover 3 is arranged on the proximal side of the base end constituent part 20. And a universal cord cover portion 24 that covers the operating portion 12 of the cover endoscope 4 and a universal cord cover portion 24 that covers the universal cord 13 and is made of a thin and soft polymer material such as vinyl chloride. Has been done.

The fluid control device 9 is provided with an air supply control valve 35, a water supply control valve 36, and a suction control valve 37, and air supply, water supply, and suction are controlled by these control valves constituted by electromagnetic valves and the like. There is.

A device side suction tube 38 is connected to the suction control valve 37, and the device side suction tube 38 is connected.
Is connected to an aspirator (not shown) so that unwanted body fluid or the like is sucked from the tip of the cover endoscope. In addition, the water supply control valve 36 has a device side water supply tube 39.
Is connected, and the end of the apparatus side water supply tube 39 is connected to a water supply tank 33 in which water for cleaning the lens cover disposed at the tip of the cover endoscope is stored. Furthermore, two device-side air supply tubes 40 extend from the fluid control device 9, and each device-side air supply tube is connected to the air supply control valve 35 and the water supply tank 33.

On the other hand, the insertion portion cover portion 22 of the cover 3
From this, an air supply tube 43, a water supply tube 44, and a suction tube 45 are extended along the universal cord 13, and suction is performed on the device side near the connector 13a on the universal cord 13 side with respect to each control valve 35, 36, 37. The tube 38, the apparatus-side water supply tube 39, and the apparatus-side air supply tube 40 are detachably connected to each other.

The cover 3 with the cover endoscope 4 attached will be described with reference to FIG. The insertion portion 14 of the cover endoscope 4 includes a tip portion 15, a bending portion 16, and a flexible portion 17. The insert portion cover portion 22 of the cover 3 includes an outer tube 18 formed of a thin and soft polymer material for isolating the insert portion 14 from the outside, and a hard resin provided on the proximal end of the outer tube 18. The base end forming portion 20 having a through hole 48 for inserting the endoscope is formed, and a cover front end portion 25 formed of a hard resin or the like provided on the front end side of the exterior tube 18.

A lens cover 71 facing the objective optical system and illumination optical system (not shown) of the cover endoscope 4 and a suction port 3 for sucking dirt in the body cavity are provided at the cover tip portion 25.
2 etc. are provided. Further, a treatment instrument insertion port 31 for inserting a treatment instrument such as forceps is provided in the proximal end configuration unit 20, and the treatment instrument insertion port 31 is formed in the proximal end configuration unit 20.
Communicates with the suction hole 20a formed inside the
The treatment tool can be projected through a suction pipe line, which will be described later, that communicates with a suction port 32 provided in the cover tip portion 25.

The outer tube 18 has a base end portion 20.
Is connected to the tube connection port 55 formed on the tip side of the. Inside the exterior tube 18, an insertion section insertion channel 51, which is a space for inserting an endoscope into which the interior of the exterior tube is inserted, and a duct for inserting a duct. Channel 5 which is the space part of
Protective tube 46 made of thin and flexible polymer material such as silicon or urethane as a partition member
Is provided. A suction conduit 28 communicating with a suction port 32 provided in the cover distal end portion 25 is inserted inside the protective tube 46, and the suction conduit 28 is provided at the distal end side of the proximal end portion 20. The suction tube 45 is connected to the passage connection portion 29 and is connected to the proximal end portion of the proximal end configuration portion 20. The suction conduit 28 has a function as a treatment tool insertion conduit.

As shown in FIG. 3, in the inner hole of the protective tube 46 disposed inside the insertion portion cover portion 22, in addition to the suction pipe line 28, provided on the distal end side of the base end forming portion 20. The air supply conduit 26 and the water supply conduit 27 are connected to the air supply conduit connection part 41 and the water supply conduit connection part 42, respectively, and communicate with the air supply nozzle and the water supply nozzle (not shown) provided on the cover tip 25. At the same time, they communicate with the air supply tube 43 and the water supply tube 44, which are connected to the proximal end through the air supply holes 20b and the water supply holes 20c formed in the base end constituent part 20, respectively. And these air supply tubes 4
3, the water supply tube 44 and the suction tube 45, and the connection portion between the proximal end constituent portion 20 and the connection portion of the base end portion 20 are covered with a tube break preventing member 30 formed of a hard resin member, and the air supply tube 43 and the water supply tube at this connection portion Buckling of 44 and suction tube 45 is prevented.

As shown in FIG. 4, the insertion portion 1 of the cover endoscope 4 is provided inside the outer tube 18 of the insertion portion cover portion 22.
4 is a space part for inserting an endoscope, which is a space part for inserting an endoscope, and a pipe part, which is a space part for inserting a gas line 26, a water supply line 27, and a suction line 28. The channel 50 is separated by a protective tube 46. The protective tube 46 is formed to have a semicircular or elliptical cross-sectional shape in the natural state. For this reason, the movement of the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 in the cross-sectional direction is restricted, so that they do not project toward the insertion part insertion channel 51 side, and the insertion part insertion channel inside the insertion part cover part. 51 is secured to the maximum, and the clearance between the insertion portion insertion channel 51 and the insertion portion 14 of the cover endoscope 4 is increased.

As shown in FIG. 5, the protective tube 46, which covers the air supply conduit 26, the water supply conduit 27, and the suction conduit 28, is provided at the proximal end of the protective tube 46.
A fixed margin 47 for fixing to 0 is integrally provided. on the other hand,
A protective tube 46 is provided at the tip end of the base end component 20.
The protection tube fixing portion 49 having a groove shape that is deeper and wider than the thickness and width of the fixing portion 47, which fixes the fixing portion 47 integrally provided on the base plate so as not to come off from the base end forming portion 20 by welding or adhesion. Is formed.

As shown in FIG. 2, when the insertion portion 14 is inserted into the insertion portion cover portion 22 between the front end portion 46a of the protective tube 46 and the cover front end portion 25, the surface of the insertion portion is Considering the length of the protective tube 46 extended to the tip side by the friction generated between the protective tube surface and the protective tube surface, the space portion 34 longer than this length is provided, and the tip side end portion 46a freely moves. The free end is not fixed with an adhesive as much as possible.

The operation of the cover 3 constructed as described above will be described. When the cover endoscope 4 is attached to the cover 3 in which the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 are inserted into the conduit channel 50 of the protective tube 46, the tip portion 15 of the cover endoscope 4 is attached. The through-hole 4 for inserting the endoscope formed in the proximal end portion 20 provided on the proximal side of the insertion portion cover 22.
It is introduced from 8 toward the insertion portion insertion channel 51 of the exterior tube 18. At this time, the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 are covered with the protective tube 46 having the proximal end fixed to the proximal end component 20 to be isolated from the insertion portion insertion channel 51. Therefore, the distal end portion 15 of the cover endoscope 4 is smoothly inserted to a predetermined position without being caught between the conduits or the conduit being entangled with the cover endoscope insertion portion 14. It will be inserted.

In this way, the protective tube fixed to the base end constituting portion which constitutes the insert portion cover portion is inserted into the outer tube by inserting the air feeding pipe passage, the water feeding pipe passage, the suction pipe passage and the like. By securing the channels, not only will each conduit not be exposed inside the outer tube, but also it will not run wild inside the outer tube, so the endoscope for cover will crush the conduit or buckle it. Without doing so, the insertion portion of the cover endoscope can be smoothly inserted into the insertion portion insertion channel provided in the outer tube of the endoscope cover.

Further, since the protective tube is fixed to the base end portion, friction caused by contact between the insertion portion of the cover endoscope and the protection tube and the insertion of the cover endoscope into the protection tube can be prevented. Even if force is applied to move the protective tube in the insertion direction due to being caught, the protective tube will not shift in the insertion direction, so the insertion channel will not be blocked and the endoscope insertion section for the cover will smoothly move. Can be inserted into the insertion section insertion channel.

Further, since the end portion on the tip side of the protective tube is made a free end, and the space portion is provided between the end portion on the tip end side of the protective tube and the tip end of the cover, the cover portion of the insertion portion is covered with the internal view of the cover. When inserting the mirror insertion part, even when the protection tube is extended to the tip side by the friction generated between the surface of the endoscope insertion part for the cover and the surface of the protection tube, Since the extension of the protective tube is absorbed in the space provided between the two, the protective tube does not block the insertion section insertion channel, and the cover endoscope insertion section is smoothly inserted into the insertion section insertion channel. can do.

Further, since the protective tube fixing portion is formed with a groove wider / deeper than the width / thickness of the fixing margin provided on the protective tube, when the endoscope insertion portion for the cover is attached to the cover, Good wearability can be obtained without the tip of the endoscope insertion portion for the cover being caught in the fixing margin.

Since the outer tube is a thin flexible tube, it is generated between the insertion section surface of the cover endoscope and the inner surface of the outer tube when the cover endoscope insertion section is removed from the insertion section cover section. Due to the friction caused, the outer tube may be caught between the insertion portion of the cover endoscope and the tube connection opening in the vicinity of the tube connection opening and may not be smoothly removed. For this reason, a hard portion 52 as shown in FIG. 6 is provided in the vicinity of the tube connection port of the exterior tube 18 connected to the tube connection port 55 of the base end component 20 shown in FIG.

That is, as shown in the figure, the exterior tube 1
8 is mixed with a first resin 53 which is a soft resin and a second resin 54 having a hardness higher than that of the first resin 53, and the second resin 54 having a hardness gradually increasing from the tip side. By increasing the mixing ratio of the hard part 52 closer to the hand side than the tip side
Is formed.

As described above, since the proximal end of the outer tube is formed to be harder than the distal end side, the outer tube is connected to the tube when the cover endoscope insertion section is removed from the insertion section cover section. Since it is not caught between the mouth portion and the cover endoscope insertion portion, the cover endoscope can be easily removed. That is, this makes it possible to provide a cover-type endoscope having excellent insertability and detachability.

Further, in order to obtain the same action and effect by providing the outer tube with a hard portion, as shown in FIG. 7, the outer tube 18 is covered with a tube member 56 such as a heat shrink tube in the vicinity of the tube connection port. Providing a hard part 52,
As shown in FIG. 8, the wall thickness of the outer tube 18 is gradually made thicker toward the vicinity of the tube connection port portion to provide the hard portion 52, or as shown in FIG. Between the connection opening portion 55 and the flexible portion 17 of the endoscope 4 for a cover, an insertion portion break stop 57 for preventing the flexible portion 17 from buckling near the tube connection opening portion 55 is inserted to form the hard portion 52. May be.

Further, the hard portion 52 may be formed by coating a relatively hard resin near the tube connection port of the outer tube 18.

FIGS. 10 and 11 relate to the second embodiment of the present invention. FIG. 10 is a sectional view showing the structure in the vicinity of the base end forming portion of the cover, and FIG. 11 is a sectional perspective view showing the protective tube.

In this embodiment, as shown in FIG. 10, the fixing position of the protective tube 46 of the first embodiment is different, and as shown in FIG. Of at least one of the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 connected to the suction conduit connection 29, the air supply conduit connection 41, and the water supply conduit connection 42 provided in It is fixed in the vicinity by adhesion or welding. The protective tube 46 is made of a flexible tube body such as silicon having a thin wall thickness, and has a circular or elliptical cross-sectional shape at the time of molding.
As shown in FIG. 1 (a), it is flattened into a flat, substantially elliptical shape. In addition, the air supply conduit 26, the water supply conduit 27, the suction conduit 2
As shown in FIG. 11 (b), the protective tube 46 maintains a substantially elliptical shape when it is inserted, and does not bulge into a circular shape, and the insertion portion insertion channel 51 is not narrowed. The other structure is similar to that of the first embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

By constructing the cover 3 as described above, when the cover 3 is assembled, first, the protective tube 46 is
After the end portion on the proximal side of the tube is fixed to at least one of the air supply pipe line 26, the water supply pipe line 27, and the suction pipe line 28, each pipe line is provided in the proximal end portion 20. Since it can be connected and fixed to the pipe line connecting portion 29, the air supply pipe line connecting portion 41, and the water supply pipe line connecting portion 42, respectively, the work of directly connecting and fixing the protective tube 46 to the proximal end component 20 is omitted. Assembleability can be improved.

Further, since it is not necessary to provide the fixing allowance 47 on the protective tube 46 and the protective tube fixing portion 49 of the base end forming portion 20 is unnecessary, the manufacturing cost is reduced.

Further, the protective tube 46 and the suction line 28
Since the protective tube does not have a large diameter between the fixed portion of and the fixed portion of the suction conduit 28 and the cover tip portion 25, the cover endoscope can be smoothly attached to the endoscope cover.

Since the protective tube is thin and soft,
In the vicinity of the bending portion, the resistance when the bending portion is bent does not increase, and the force for bending operation of the bending knob (not shown) is not adversely affected. Other functions and effects are the same as those in the first embodiment.

12 and 13 relate to the third embodiment of the present invention, FIG. 12 is a view showing a connecting portion between a suction pipe passage opening portion and a suction pipe passage, and FIG. 13 is a suction pipe passage opening portion and a base end constituent portion. It is a figure which shows the connection part with.

In this embodiment, as shown in the drawing, the method of fixing the protective tube 46 to the base end component of the first and second embodiments is different, and as shown in FIG. 12 and FIG. The conduit connecting portion is configured as a separate suction conduit connecting portion 58 which is formed separately from the base end forming portion 20 and is made of a hard member. The protection tube 46 connected to the separate suction pipe line connecting portion 58 is integrally provided with a fixing margin portion 46b, and the fixing margin portion 46b is protected by a protection tube fixing member 60 having a locking claw 59. The holding tube 46 is clamped and screwed to the separate suction pipeline connecting portion 58 with the fixing screw 61 to fix the protective tube 46 to the separate suction pipeline connecting portion 58. Then, the separate suction pipe line connection portion 58 to which the protection tube 46 is fixed is provided.
Is fixed to a predetermined position of the base end forming portion 20. Other configurations are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

By constructing the cover 3 as described above, when the cover 3 is assembled, first, the protective tube 46 is
After connecting the suction conduit 28 extending from the separate suction conduit connecting portion 58, the air supply conduit 26, the water supply conduit 27, the suction conduit 2
The fixing portion 46b of the protective tube 46 covering 8 is integrally fixed to the separate suction conduit connecting portion 58 by the protective tube fixing member 60 having the locking claw 59 and the fixing screw 61. Next, the air supply conduit 26 and the water supply conduit 27 are connected to the base end component 2
0 is connected and fixed to the air supply pipe line connecting portion 41 and the water supply pipe line connecting portion 42, respectively, and the separate suction pipe line connecting portion 58 is connected and fixed to the base end forming portion 20 to form a base end forming portion. Therefore, since the protective tube is fixed to the hard suction pipe line connecting portion formed separately, the assembling workability and the fixing stability are improved. Other actions and effects are similar to those of the above-described embodiment.

FIG. 14 is a sectional view showing the structure of the protective tube 46 according to the fourth embodiment of the present invention. In the present embodiment, the structure of the protective tube 46 is different from that of the first embodiment, and as shown in the drawing, a notch having a notch 62a over the entire length of a part of the outer circumference is provided inside the insertion portion cover 22. A protective tube 62 is provided. The notch protection tube 62 includes the air supply pipe line 26, the water supply pipe line 27, and the suction pipe line 28.
The conduit channel 50 for inserting the insertion part is formed, and the insertion part insertion channel 51 is secured in the outer tube. Other configurations are the same as those in the above-mentioned embodiment.

As described above, since the protective tube is provided with the notch over the entire length, the space between the protective tube and the outer tube is increased by the thickness of the notched protective tube. Even if the outer tube is formed to have a small diameter corresponding to the thickness of the above, the conduit channel 50 can be similarly secured. Therefore, it is possible to provide the endoscope device in which the insertion portion cover portion has a small diameter and the burden on the patient is small. Other actions and effects are similar to those of the above-described embodiment.

FIG. 15 is a sectional view showing the structure of a cover type endoscope according to the fifth embodiment of the present invention. As shown in the figure, the cover-type endoscope 2 of this embodiment has a conduit channel 50 which is inserted through the outer tube of the cover 3 in the first embodiment.
As shown in the figure, the protective tube 46 forming the above is inserted into the conduit insertion portion 72 which is a through hole formed in the insertion portion 14 of the cover endoscope 4a.

That is, an endoscope insertion through-hole 48, a suction conduit connecting portion 29, and a treatment instrument insertion port 31 are formed in the proximal portion 20 of the cover 3a on the proximal side, and this treatment instrument is formed. The suction tube 45 is connected to the suction hole 20a that connects the insertion port 31 and the suction conduit connection portion 29.

On the other hand, inside the outer tube 18 of the insertion portion cover 22, the protective tube 46 in which the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 are inserted into the conduit channel 50.
Is provided, and the end portion on the front end side of the protective tube 46 is connected and fixed to the tube connecting portion 25a formed on the front end portion 25 of the cover. The proximal end of the suction line 28 is
It is adapted to be detachably connected to the suction pipe connecting portion 29, and the other pipe passages 26 and 27 extend from the base end constituting portion 20 together with the suction tube 45 to the outside. The proximal end of the protection tube 46 is fixed to the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 in the vicinity of the base end component 20. Other configurations are the same as those in the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

The operation of the cover 3a configured as described above will be described. When the cover endoscope 4a is attached to the cover 3a, first, the protective tube 46 that covers the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 that penetrates inside the exterior tube of the cover 3a is extended. The air supply pipe line 26 and the water supply pipe line 27 to be inserted are inserted from the distal end side opening of the pipe line insertion portion 72 of the cover endoscope 4a.

Next, the insertion portion 14 of the cover endoscope 4a is inserted into the endoscope insertion through hole 48 of the proximal end portion 20 and the insertion portion insertion channel 51 is gradually inserted into the insertion portion insertion channel 51. 1
4 is inserted and the protective tube 46 is inserted into the conduit insertion portion 72. Then, the insertion of the cover endoscope insertion portion 14 into the insertion portion insertion channel 51 is completed, and at the same time, the air supply conduit 26 is opened from the proximal end side opening of the conduit insertion portion 72.
Protective tube 4 covering the water supply conduit 27 and the suction conduit 28
6 reaches a predetermined position.

Next, the air supply line 26 and the water supply line 2
7 is connected to the device-side air supply tube 40 and the device-side water supply tube 39 of the fluid control device 9, respectively, while the suction pipe line 28 is connected to the suction pipe line connection part 29 provided in the base end constituent part 20 of the cover 3. At the same time as the connection, the suction tube 45 extending from the proximal end configuration portion 20 is connected to the device-side suction tube 38 of the fluid control device 9 to complete the attachment of the cover endoscope 4a to the cover 3a.

As described above, since the air supply pipe, the water supply pipe and the suction pipe are covered with the protective tube and bundled, the movement in the cross-sectional direction is restricted, so that the pipe may meander. Therefore, the air supply conduit, the water supply conduit, and the suction conduit bundled by the protective tube can be easily inserted into the conduit insertion portion formed in the cover endoscope.

Further, since the proximal end of the protective tube is fixed to the air supply conduit, the water supply conduit and the suction conduit in the vicinity of the base end constituent part, it occurs between the conduit insertion part and the protective tube. Since the protective tube is not pulled in the insertion direction due to friction and is not turned up, the protective tube is not loosened inside the conduit insertion portion and remains inside the conduit insertion portion.

Furthermore, since the suction pipe line is configured to be detachable from the suction pipe line connecting portion, the suction pipe line can be inserted into the pipe line inserting portion, and the suction pipe line and the suction pipe line connecting portion can be inserted. A forceps insertion channel is formed by the treatment tool insertion port communicating with the. At this time, since the air supply conduit, the water supply conduit, and the suction conduit are inserted through the conduit insertion portion formed in the insertion portion of the cover endoscope, the outer tube is provided outside the cover endoscope insertion portion. Since it is only covered, the insertion part cover part is not gripped at the time of inspection, and the pipe line is not blocked even if twisting operation is performed, so gripping and operability are greatly improved. improves.

In the above-described first to fourth embodiments, the endoscope insertion space and the conduit for inserting the endoscope are inserted through the inside of the insertion cover of the endoscope cover. The partition member that is divided into the space for inserting the pipe passage is described as a soft tube, but the partition member is not limited to the tube, and a plurality of sheets (two pieces in a sheet-like member or one tube are provided. It may be a partition part such as a so-called multi-lumen tube provided with a through hole.

Further, the material of the member constituting the partition member may be vinyl chloride, paper, etc. in addition to silicon resin, urethane resin, fluorine resin and the like.

Furthermore, if the proximal end of the partition member is fixed, even if the partition member is fixed to the distal end as shown in FIGS. 16 and 17, the entire length of the partition member is, for example, the suction pipe line. It may be fixed to the air supply pipe 26 or the water supply pipe 2 in the same manner as the hand side shown in FIG.
7. The suction line 28 may be fixed. This FIG. 16 and FIG.
7, the method of fixing the protective tube 46, which is a partition member, is different, and in FIG. 16, the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 are provided in the first step 78 located outside the through hole 77.
Is fixed to fix a tip portion of the protective tube 46 to a part of the outer tube. The fixed position may be provided closer to the hand side than the bending portion 16 when the cover 3 is attached to the cover endoscope 4. In addition, in FIG. 17, the air supply conduit 26, the water supply conduit 27, and the suction conduit 28 are fixed to the first step 78, and
The protective tube 46 is fixed to the second step portion 79 located outside the step portion 78 by adhesion or press fitting. The fixing portion of the protective tube 46 has a rigid cover tip portion 25.
Therefore, there is no elastic deformation of the fixing portion, and the fixing portion can be surely fixed.

Further, the cover endoscope is not limited to an endoscope having a flexible portion in the insertion portion, and the insertion portion used in a surgical operation may be a rigid endoscope. In this case, the endoscope is The cover for covering not only the flexible tube-shaped cover of the insertion section, but also the flexible cylindrical-shaped cover of the insertion section.

By the way, an air supply tube, a water supply tube,
When attaching the cover endoscope to the endoscope cover equipped with a suction tube, etc., the cover endoscope may get caught in the tubes extending from the endoscope cover, or the tubes may buckle. Therefore, it was difficult to smoothly attach the cover endoscope to the cover.Therefore, when the cover endoscope is attached to the endoscope cover, the cover endoscope and the cover tubes are separated from each other. There has been a demand for a cover-type endoscope which is not caught and has good wearability and which does not cause the tube to buckle in the cover endoscope. Therefore, the endoscope cover is configured as follows.

The cover 3 shown in FIG. 18 is the cover 3 before it is mounted on the cover endoscope 4, and the base end component is so arranged that the tubes do not get in the way when the cover endoscope 4 is mounted. 20, a device-side suction tube 38, which is provided in the fluid control device 9 and extends from the tube break-preventing member 30, and a device-side water supply tube 39 and a device-side air supply tube 40, which are respectively connectable to the device-side air supply tubes 43 and The suction tube 45 and the suction tube 45 are attached to a tube fixing means, which will be described later, fixed to the tube connection port 55 and the cover tip 25, and are arranged along the insertion section cover 22.

As shown in FIG. 19, the tube fixing member 65 which is the tube fixing means has a plurality of tube fixing portions 63 and a cover fixing portion 64.
4 is a cover front end portion 25 and a base end portion 2 having substantially the same outer diameter.
It is fixed to the tube connection port 55 of No. 0. Then, each tube fixing portion 63 of the tube attaching member 65 fixed to the cover tip portion 25 and the tube connection port portion 55.
The water supply tube 43, the air supply tube 44, and the suction tube 45 are sandwiched between the water supply tube 43, the air supply tube 44,
The suction tube 45 is arranged along the insertion portion cover portion 22.

The tube mounting member 65 is
The cover fixing portion 64 is made of a polymer material such as polypropylene or polycarbonate, and the cover fixing portion 64 has elasticity.
Expands as shown by the arrow in FIG. Therefore, the cover front end portion 25 and the base end portion 20 having slightly different diameters are provided.
Tube connection port 55 or universal cord 1
Even if it is 3, etc., it can be detachably clamped and fixed. As shown in FIG. 20, the cover 3 and the cover endoscope 4 are attached to fix the operation section 12 to the proximal end configuration section 20. After that, the air supply tube 43, the water supply tube 44, and the suction tube 45 along the operation unit 12 and the universal cord 13 are attached to the universal cord 13 via the tube attachment member 65. In addition, water supply tube 4
3, operation part 12 of air supply tube 44, suction tube 45
A substantially arcuate transition portion 69 is formed in the vicinity of, and the air supply tube 43, the water supply tube 44, and the suction tube 45, which are arranged along the universal cord 13 through the operation portion 12, do not buckle. It is arranged.

When the cover endoscope 4 is attached to the cover 3 as shown in FIG. 21, first, the distal end portion 15 of the cover endoscope 4 is inserted into the proximal end forming portion 20 for insertion of the endoscope. The insertion portion 14 is gradually inserted into the insertion portion insertion channel 51 from the endoscope insertion through hole 48 while facing the through hole 48.
At this time, since the air supply tube 43, the water supply tube 44, and the suction tube 45 are arranged along the outer tube 18 by the tube mounting member 65 fixed to the insertion section cover part 22, the tubes are covered without being caught by these tubes. The insertion portion 14 of the medical endoscope 4 is inserted into a predetermined position.

Next, after the cover endoscope 4 is mounted on the cover 3, the tube mounting member 65 is removed from the cover distal end portion 25 and the tube connection port portion 55, and the air supplied between the tube mounting member 65 is supplied. Tube 43,
The water supply tube 44 and the suction tube 45 are removed. Then, the air supply tube 43, the water supply tube 44, and the suction tube 45 are arranged along the operation section 12 and the transition section 69 of the cover endoscope 4 along the universal cord side. At this time, the cover fixing portion 64 of the tube attachment member 65 removed from the cover tip portion 25 and the tube connection port portion 55 is sandwiched and fixed to the universal cord 13, and the tube attachment member 65 is provided with the air supply tube 43 and the water supply tube 4.
4, the suction tube 45 is attached to the fluid control device 9
Up to the universal cord 13 and connected to the device-side suction tube 38, the device-side water supply tube 39, and the device-side air supply tube 40 of the fluid control device 9, respectively.

As described above, when the cover endoscope is attached to the cover, the air supply tube, the water supply tube, and the suction tube are fixed to the insertion section cover section, so that the endoscope can be inserted through the base end configuration section. Since there is no turbulence of the tube near the through hole,
The tubes are not obstructive during mounting, and the cover endoscope can be easily mounted on the endoscope cover.

Further, since the tube for covering is not crushed or buckled by the endoscope for covering when mounted, the mountability of the endoscope for covering on the cover is greatly improved.

As a modified example of the above, as shown in FIG. 22, the operating portion 12 of the cover endoscope 4 is provided on the proximal side of the proximal end portion 20.
A grip cover 70 formed of an elastomer, which is a soft elastic body, is provided as the operation portion cover portion 23 for covering the. In addition, the air supply tube 4 is attached to the grip cover 70.
3, a tube break preventing portion 30a for preventing buckling of the water supply tube 44 and the suction tube 45 are integrally formed, and an air supply tube 43, a water supply tube 44, and a suction tube 45 extending from the tube break preventing portion 30a. The tubes are bundled by an adhesive tape member 68 which can be repeatedly used and are detachably fixed to the base end constituting section 20.

When the cover endoscope 4 is mounted on the cover 3, the cover endoscope insertion portion 14 is inserted into the cover 3,
After fixing the signal cable 21 to the base end component 20, the air supply tube 43, the water supply tube 44, and the suction tube 45 bundled from the adhesive tape member 68 are removed and extended, and then the air supply tube 43 and the water supply tube 44. The suction tube 45 is arranged along the operating portion 12 and the universal cord 13 of the cover endoscope 4, and is fixed to the universal cord 13 again by the adhesive tape member 68.

As described above, since the air supply tube, the water supply tube, and the suction tube are bundled and fixed to the base end constituent part, only the vicinity of the base end constituent part is attached when the cover and the cover endoscope are mounted. Since it becomes work, workability is improved.

In the present embodiment, the attachment of the air supply tube, the water supply tube, and the suction tube to the outer surface of the operation portion cover is not limited to the adhesive tape as in the above embodiment, and the tube and the tube can be inserted. It may be a band-shaped member or a string that can be fixed by bundling with the section cover section. Also, since these tubes are disposable, the operation section is made of an adhesive having an adhesive strength that can be easily removed by the user. You may fix directly to a cover part.

The tubes may be attached to the operation portion cover portion anywhere on the outer surface of the operation portion cover portion, such as along the insertion portion cover portion as shown in FIG. 18 or as shown in FIG. It may be possible to attach the cover in a rolled state, and the point is that the tubes need not be an obstacle when the cover and the endoscope for the cover are attached.

Further, the tube may be simply positioned and fixed at the connecting portion of the base end forming portion without the tube break preventing portion.

Further, the cover endoscope is not limited to an endoscope having a flexible portion in the insertion portion, and the insertion portion used for a surgical operation or the like may be a rigid endoscope. In this case, the endoscope is covered. As for the cover, not only the insertion portion cover portion having a soft tube shape but also the insertion portion cover portion may have a hard tube shape.

By the way, a lens cover, a nozzle, etc. are arranged at the cover tip of the insertion section cover of the endoscope cover, and in order to attach a small member such as the nozzle or the lens cover to the cover tip. Is difficult to assemble automatically, and it takes time to do it by hand, so it was expensive. Therefore, there has been a demand for an inexpensive cover tip portion without deteriorating the performance. Therefore, the cover tip portion is configured as follows.

The cover tip portion 25 of this embodiment is formed by injection molding using a transparent optical resin material PMMA, PC, PS or the like, and as shown in FIG. A lens cover portion 80 is provided on the distal end surface of a cover distal end portion 25 disposed on the distal end side of the exterior tube 18 forming the portion 22 so as to face the observation optical system and the illumination optical system disposed in the cover endoscope 4. An air supply nozzle 81, a water supply nozzle 82, and a suction port 32 are provided. Code 8
Reference numeral 4 is a light-shielding portion described later. The air supply nozzle 81
Communicates with an air supply conduit 27 described later, the water supply nozzle 82 communicates with a water supply conduit not shown, and the suction port 32 communicates with a suction conduit not shown.

As shown in FIG. 24, an observation optical system 91 and an illumination optical system 92 provided in the cover endoscope are exposed in the lens cover portion 80 of the cover tip portion 25. The illumination light emitted from the illumination optical system 92 is incident on the observation optical system 91 on the optical path between the observation optical system effective range portion 85 and the illumination light effective range portion 86 corresponding to the system 91 and the illumination optical system 92. A light shielding portion 84 formed of a colored resin such as black for preventing flare is provided.

The light-shielding portion 84 is formed integrally with the cover front-end portion 25 at the time of molding the cover front-end portion by two-color molding in which the light-shielding portion 84 is formed of a colored resin or insert molding in which a light-shielding member is inserted. .

Further, as shown in FIGS. 25 and 26, the illumination light effective portion 86 which is the effective area of the illumination optical system of the illumination optical system 92 corresponding to the inner peripheral surface of the cover tip portion 25 and the lens cover portion 80 and the observation optical system. An antireflection layer 88, which is coated with a colored paint having a low optical reflectance, such as black, is provided on a portion other than the system effective range portion 85. Furthermore, an observation optical system 91 and an illumination optical system 92 for the tip surface of the endoscope tip portion 93.
An antireflection layer 88 coated with a colored paint having a low optical reflectance is also provided in the vicinity of.

As shown in FIG. 27, the illumination optical system 92
The illumination light emitted further does not enter the observation optical system through the optical path shown by the arrow a because the optical path is blocked by the light shielding portion 84 in the cross section of the lens cover 80.

Further, as shown in FIG. 28, the illumination light reflected on the back surface of the lens cover 80 is repeatedly impinged on the antireflection layer 88 as indicated by arrows b and c, and is attenuated. The illumination light does not enter the observation optical system 91 due to the reflection on the back surface.

By integrally molding the lens cover portion, the air supply nozzle, the water supply nozzle and the suction port with the transparent resin at the tip of the cover, the number of parts can be reduced and the manufacturing cost can be reduced. Since it does not exist, it can be manufactured inexpensively and in large quantities.

Further, since the cover tip portion is integrally formed, it is possible to easily obtain a cover tip portion having a smooth surface state without seams or steps on the surface. Do not invade.

Further, since the cover tip portion is integrally formed, it is possible to easily obtain the cover tip portion having a smooth surface state without seams or steps on the surface. Even if it adheres to the lens cover, it can be easily washed and removed by sending water from the water supply nozzle, and the remaining water drops are reduced by the water supply, and the remaining water drops are also sent from the air supply nozzle. It can be easily blown off and removed by air.

Further, since the light-shielding portion and the antireflection layer are provided at the tip of the cover, it is possible to prevent problems such as flare caused by the illumination light entering the observation optical system.

Further, as shown in FIGS. 29 to 31, the cover tip portion 25 is made of optically transparent PMMA, PC, PS.
A lens cover portion 101 formed of an optical resin such as
A cover tip portion 25a having a light-shielding portion 102 formed of resin such as PMMA, PC, PS modified PPO, or polysulfone, which does not transmit light and has a low light reflectance, which is colored black, is integrally formed by two-color molding. It is possible to provide an inexpensive tip end portion of the cover by omitting the coating step of forming the antireflection layer for preventing flare.

[Additional Notes] 1. An endoscope cover that constitutes a cover-type endoscope by covering the cover endoscope, and treats the inside of an exterior member that constitutes an insertion portion cover portion that covers the insertion portion of the cover endoscope. A space part for inserting a conduit for inserting conduits such as a conduit for inserting a tool, an air supply conduit, a water supply conduit, and a space part for inserting an endoscope for inserting an insertion part of an endoscope for a cover. In the endoscope cover having a partition member that is divided into sections, at least a part of a proximal end portion of the partition member is fixed near a proximal end portion of an exterior member that constitutes the insertion portion cover portion.

2. The proximal end of the partition member is fixed to a proximal end portion having an endoscope insertion opening for inserting the insertion portion of the endoscope disposed at the proximal end of the exterior member forming the insertion portion cover portion. The endoscope cover according to appendix 1.

3. The endoscope cover according to appendix 1, wherein a part of the partition member is fixed to a base end portion of an exterior member.

4. The endoscope cover according to appendix 1, wherein the proximal end portion of the partition member is fixed near the proximal end constituent portion of at least one conduit provided in the insertion portion cover portion.

5. The endoscope cover according to appendix 1, wherein the partition member is fixed on a tip end side of a connecting portion between the proximal end constituent portion and the conduit.

6. The endoscope cover according to appendix 1, wherein the proximal end of the partition member is fixed to the suction conduit connection port of the proximal end component.

7. The endoscope cover according to appendix 1, wherein the end portion of the partition member on the front end side is a free end.

8. 8. The endoscope cover according to appendix 7, wherein there is a gap between the tip end of the partition member and the tip of the cover arranged at the tip end of the exterior tube.

9. The proximal end of the at least one conduit is connected to a rigid separate conduit connecting member that is separate from the base end component, and the proximal end of the partition member is connected to the separate conduit connecting member. The endoscope cover according to appendix 1, which fixes the cover.

10. The endoscope cover according to appendix 1, wherein the partition member is fixed to a groove portion provided in the base end configuration portion.

11. 11. The endoscope cover according to appendix 10, wherein the depth of the groove portion provided in the base end forming portion is equal to or larger than the wall thickness of the partition member.

12. Supplementary Note 4 wherein the conduit to which at least a part of the end portion on the proximal side of the partition member is fixed is a treatment instrument insertion channel through which a treatment instrument for performing treatment in a body cavity can be inserted.
The described endoscope cover.

13. 6. The endoscope cover according to appendix 4, wherein the conduit to which at least a part of the end portion on the proximal side of the partition member is fixed is an air supply conduit for transferring gas into the body cavity.

14. 6. The endoscope cover according to appendix 4, wherein the conduit to which at least a part of the partition member on the proximal side is fixed is a water supply conduit for transferring the liquid into the body cavity.

15. 6. The endoscope cover according to appendix 4, wherein the conduit to which at least a part of the proximal end of the partition member is fixed is a suction conduit for discharging fluid from the body cavity.

16. The endoscope cover according to appendix 1, which fixes a tip portion of the partition member.

17. 17. The endoscope cover according to appendix 16, wherein a tip portion of the partition member is fixed to a tip portion of the cover.

18. 17. The endoscope cover according to appendix 16, wherein a tip end portion of the partition member is fixed to an exterior member.

19. 17. The endoscope cover according to appendix 16, which fixes the distal end portion of the partition member to the duct.

20. 18. The endoscope cover according to appendix 17, wherein a tip portion of the partition member is fixed to a groove portion provided in a tip portion of the cover.

21. 18. The endoscope cover according to appendix 17, wherein the tip end portion of the partition member is provided in the vicinity of the conduit connection portion at the tip end portion of the cover.

22. The endoscope cover according to appendix 1, which fixes the partition member over the entire length.

23. The endoscope cover according to appendix 1, wherein the partition member is a sheet-shaped member.

24. The endoscope cover according to appendix 1, wherein the partition member is a tubular member that covers at least one conduit.

25. 25. The endoscope cover according to appendix 24, wherein a cutout portion is provided in the entire length of the tubular member.

26. 26. The endoscope cover according to appendix 25, wherein a diameter of an insertion portion of the endoscope cover is reduced by a cutout portion provided over the entire length of the tubular member.

27. 25. The endoscope cover according to appendix 24, wherein the tubular member has a substantially elliptical cross-sectional shape.

28. 25. The endoscope cover according to appendix 24, wherein the tubular member is thin and has flexibility, and the cross-sectional shape in a natural state is flattened to be a flat elliptical shape.

29. 25. The endoscope according to appendices 23 and 24, wherein the partition member is made of a silicone resin.

30. 25. The endoscope according to appendices 23 and 24, wherein the partition member is made of urethane resin.

31. 25. The endoscope according to appendices 23 and 24, wherein the partition member is made of a fluororesin.

32. The endoscope cover according to appendix 1, wherein the conduit provided on the endoscope cover is inserted into a conduit insertion portion formed on the cover endoscope.

33. The endoscope cover according to appendix 1, wherein the cover endoscope is a flexible endoscope having a flexible portion at an insertion portion.

34. The endoscope cover according to appendix 1, wherein the endoscope for cover is a rigid endoscope having a rigid insertion portion.

35. The endoscope cover according to appendix 1, wherein the exterior member is formed of a flexible member.

36. The endoscope cover according to appendix 1, wherein the exterior member is formed of a hard material.

37. Insertion part cover having a cover tip part, an exterior member covering the insertion part of the endoscope, and a proximal end configuration part having an endoscope insertion opening for inserting an endoscope provided at a proximal end of the exterior member. An endoscope cover which is provided inside the portion and communicates with a fluid transfer conduit forming a suction conduit, an air supply conduit, and a water supply conduit and extending at least one fluid transfer tube from the end portion on the proximal side. The endoscope cover according to appendix 1, further comprising tube fixing means for fixing a part of the fluid transfer tube to a part of an outer surface of the insertion section cover part.

38. 38. The endoscope cover according to appendix 37, further comprising tube fixing means for fixing a part of the fluid transfer tube to the front end portion of the cover.

39. Note 3 provided with a tube fixing means for fixing a part of the fluid transfer tube to the proximal end constituent part
The endoscope cover described in 7.

40. (Supplementary note 37) A tube fixing means for fixing a part of the fluid transfer tube to the exterior member is provided.
The described endoscope cover.

41. 38. The endoscope cover according to appendix 37, wherein a tube fixing portion that fixes the tube to the tube fixing means and a cover fixing portion that fixes the tube fixing means to the cover distal end portion and the base end constituent portion are provided.

42. 40. The endoscope cover according to appendices 38 and 39, wherein the fluid transfer tube is arranged along the insertion portion cover portion.

43. Note 3 for fixing the fluid transfer tube in a substantially circular shape to the outer surface of the insertion section cover section
The endoscope cover according to item 9.

44. 38. The endoscope cover according to appendix 37, wherein the direction in which the fluid transfer tube extends on the proximal end side of the exterior member is changed to the distal end side and the fluid transfer tube is fixed to the outer surface of the insertion section cover section.

45. 38. The endoscope cover according to appendix 37, wherein the fluid transfer tube is fixed to a universal cord after the cover endoscope is configured.

46. The cover endoscope according to appendix 45, wherein the member for fixing the fluid transfer tube to the universal coat is a tube fixing means. 47. 38. The endoscope cover according to appendix 37, wherein the tube fixing means for fixing the fluid transfer tube is an adhesive tape.

48. Note 37. The tube fixing means for fixing the fluid transfer tube is a removable adhesive.
The described endoscope cover.

49. 38. The endoscope cover according to appendix 37, wherein the fluid transfer tube is fixed to the proximal end portion at a portion extending from the proximal end portion.

50. 38. The endoscope cover according to appendices 1 and 37, wherein a bending prevention member for the fluid transfer tube is provided in the proximal end portion.

51. 38. The endoscope cover according to appendix 37, wherein the base end forming portion and the fluid transfer tube are provided with a bending stopper integrally formed of an elastic material.

[0140]

As described above, according to the present invention, it is possible to provide an endoscope cover that is easy to mount the cover endoscope on the endoscope cover.

[Brief description of drawings]

FIG. 1 to FIG. 5 relate to a first embodiment of the present invention,
FIG. 1 is a perspective view showing a schematic configuration of an endoscope device of an endoscope cover system.

FIG. 2 is a cross-sectional view showing the configuration of a cover-type endoscope.

FIG. 3 is a cross-sectional view showing a configuration in the vicinity of a base end configuration portion of the cover.

FIG. 4 is a cross-sectional view of a cover type endoscope in the vicinity of an exterior tube.

FIG. 5 is a perspective view showing a configuration of a connecting portion between a proximal end constituent portion and a protective tube.

FIG. 6 is a diagram showing a configuration in the vicinity of a tube connection opening portion of a proximal end constituent portion of an exterior tube.

FIG. 7 is a diagram showing another configuration in the vicinity of the tube connection port portion of the proximal end portion of the outer tube.

FIG. 8 is a diagram showing another configuration in the vicinity of the tube connection port portion of the proximal end configuration portion of the outer tube.

FIG. 9 is a view showing another configuration in the vicinity of the tube connection opening portion of the proximal end portion of the outer tube.

10 and 11 relate to a second embodiment of the present invention, and FIG. 10 is a cross-sectional view showing a structure in the vicinity of a base end forming portion of a cover.

FIG. 11 is a sectional perspective view showing a protective tube.

FIG. 12 and FIG. 13 relate to a third embodiment of the present invention, and FIG. 12 is a diagram showing a connecting portion between a suction pipe passage opening portion and a suction pipe passage.

FIG. 13 is a view showing a connecting portion between a suction pipe passage opening portion and a base end forming portion.

FIG. 14 is a sectional view showing the structure of a protection tube according to a fourth embodiment of the present invention.

FIG. 15 is a sectional view showing the configuration of a cover-type endoscope according to a fifth embodiment of the present invention.

FIG. 16 is a cross-sectional view showing an example of fixing the distal end side of the protective tube.

FIG. 17 is a cross-sectional view showing another example of fixing the distal end side of the protective tube.

FIG. 18 is a view showing a cover in which a conduit extending from the cover is fixed to an insertion section cover section.

FIG. 19 is a diagram showing a configuration of a tube fixing means.

FIG. 20 is a view showing a cover-type endoscope in which a tube fixing means is provided on a universal cord.

FIG. 21 is a view showing a state in which the cover endoscope is inserted into the cover.

FIG. 22 is a view showing another configuration of the cover in which the duct extending from the cover is fixed to the insertion section cover section.

FIG. 23 is a perspective view showing a cover distal end portion of an insertion portion cover portion.

FIG. 24 is a front view of the tip of the cover.

FIG. 25 is an axial sectional view of the tip of the cover.

FIG. 26 is an axial sectional view of the tip of the cover in another direction.

FIG. 27 is a view showing the action of a light shielding portion provided at the tip of the cover.

FIG. 28 is a view showing the action of the antireflection layer provided on the cover tip and the cover endoscope.

FIG. 29 is a front view of the tip of the cover having another configuration.

30 is an axial cross-sectional view of the tip of the cover shown in FIG. 29.

FIG. 31 is an axial cross-sectional view of the cover distal end portion of FIG. 29 in another direction.

[Explanation of symbols]

 2 ... Cover endoscope 3 ... Cover 4 ... Cover endoscope 18 ... Exterior tube (exterior member) 20 ... Proximal end part 46 ... Protective tube (partitioning member)

Claims (1)

[Claims] 1. An endoscope cover that constitutes a cover-type endoscope by covering the cover endoscope, and an exterior member that constitutes an insertion portion cover portion that covers the insertion portion of the cover endoscope. Inside the tube, a space for pipe passage for inserting the treatment instrument insertion pipe, air supply pipe, water supply pipe, etc., and an endoscope insertion pipe for inserting the insertion portion of the cover endoscope. In an endoscope cover having a partition member that is divided into a common space portion, at least a part of a proximal end portion of the partition member is fixed near a proximal end portion of an exterior member that constitutes the insertion portion cover portion. An endoscope cover characterized in that.