JPH07184834A - Cover type endoscope - Google Patents

Abstract

PURPOSE:To provide a cover type endoscope provided with an endoscope cover which is better in the treating device insertibility and economical and will not bend under a bending force caused by the bending of an endoscope for a cover, where the structure of a pipeline for inserting a treating device is simplified. CONSTITUTION:An endoscope cover 3 has a through hole 51 for inserting an endoscope to put an endoscope 4 for a cover therethrough and a channel tube 52 is inserted through the cover as a pipeline for increasing a treating device almost parallel with the through hole 51 for inserting the endoscope. The channel tube 52 is, for example, made up of a soft channel tube body 53 comprising ethylene tetrafluoride with high smoothness and a porous lumen member 54 comprising ethylene tetrafluoride with a high bending resistance. The channel tube body 53 is extended to a mouth part from a tip cover member 25 while the lumen member 54 is fitted externally into the channel tube body 53 free to slide in a range corresponding to a bending part of the endoscope 4 for the cover mounted on the endoscope cover 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disposable endoscope cover for covering a cover endoscope provided with a conduit for inserting a flexible treatment tool or the like.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical and industrial fields. For example, an endoscope used in the medical field can be used for various treatments by inserting an insertion portion into a body cavity and observing an organ or the like, or using a treatment instrument inserted in a treatment instrument channel of the endoscope. Can be treated. Therefore, in the endoscope system, various peripheral devices for endoscopic examination are used according to the purpose and application of the examination.

An endoscope system including peripheral devices for endoscopic examinations used for these various purposes and applications is not only useful for examinations, but also how examination costs can be reduced. That is a more important issue than ever before.

Therefore, in order to reduce the inspection cost, it is possible to increase the inspection efficiency by preparing a plurality of endoscopes and sequentially using the endoscopes that have been cleaned and disinfected during the cleaning and disinfecting time. In this case, there is a problem that the cost of purchasing an endoscope increases.

Therefore, US Pat. No. 4,646,722 proposes a disposable endoscope sheath (hereinafter referred to as an endoscope cover). This endoscope cover covers the endoscope insertion part before the inspection, inserts the endoscope covered by the endoscope cover into the body cavity, and covers the endoscope insertion part after the inspection / treatment is completed. The endoscope cover is discarded, the endoscope is covered with a new endoscope cover, and it is used for the next examination. By using the endoscope cover, the cleaning and disinfection time (1 hour) can be limited to the cover replacement time (10 minutes), and it is possible to perform more than double inspection with one endoscope. Thus, the cost of a single endoscopy can be significantly reduced.

[0006]

However, even though the endoscope cover is disposable, the treatment instrument insertion conduit formed on the endoscope cover covers the conventionally used cover. It had the same configuration as the forceps insertion channel of the endoscope (hereinafter, referred to as a general-type endoscope) used without any action.

[0007] That is, the forceps insertion channel of the general type endoscope is variously devised so as not to be bent by bending such as bending operation. For example, a tube body forming the forceps insertion channel is used. A groove is formed and a coil body made of a metal wire is incorporated therein, or a forceps insertion channel is formed by a tube body made of porous tetrafluoroethylene.

For this reason, the forceps insertion channel formed by incorporating the coil body requires time and effort for assembling, and the cost is high, and the forceps insertion channel using a tube made of a porous tetrafluoroethylene tube requires labor for manufacturing the tube. Therefore, the cost increases by providing this tube in the entire length of the endoscope insertion portion, and there is a disadvantage that the one-time use of the endoscope cover is expensive and it is not economical.

The present invention has been made in view of the above circumstances, and has a simple treatment instrument insertion conduit, which does not bend when the cover endoscope is bent. It is an object of the present invention to provide a cover-type endoscope having an endoscope cover that is easy to insert and economical.

[0010]

An endoscope cover according to the present invention is provided with a cover endoscope, an endoscope insertion portion for inserting the cover endoscope, and a through hole for inserting the endoscope. Is a cover-type endoscope that is combined with an endoscope cover that is provided with a flexible treatment instrument insertion conduit, and at least the treatment instrument insertion conduit that is disposed in the endoscope cover. A flexible and highly flexible lumen member is disposed at a position where the curved portion of the cover endoscope mounted on the endoscope cover is opposed to the lumen member.

[0011]

According to this structure, when the cover endoscope attached to the endoscope cover is bent, the treatment instrument insertion conduit at a position opposite to the curved portion of the cover endoscope is provided. flexible,
Moreover, since it is formed of a lumen member having high bending resistance,
Since it bends without buckling or bending, the treatment instrument is smoothly inserted through the treatment instrument insertion conduit.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 relate to a first embodiment of the present invention, FIG. 1 is a perspective view showing a schematic configuration of an endoscope apparatus, FIG. 2 is a perspective view showing an outline of a cover-type endoscope, and FIG. FIG. 4 is a view showing an endoscope cover and a cover endoscope inserted through the endoscope cover, FIG. 4 is a sectional view showing a schematic configuration of a cover-type endoscope, and FIG. 5 is a lens cover of the cover-type endoscope. FIG. 6 is a cross-sectional view showing the relationship with the nozzle, and FIG. 6 is a cross-sectional view showing the curved state of the cover-type endoscope.

As shown in FIG. 1, an endoscope apparatus 1 is an apparatus having a cover type endoscope 2. The cover-type endoscope 2 is
The endoscope cover (hereinafter abbreviated as a cover) 3 and a cover endoscope 4 attached to the cover 3 are combined.

The endoscope device 1 includes the cover-type endoscope 2 described above.
And a cart 5 in which various peripheral devices and the like to which the cover-type endoscope 2 is connected are installed, and a cover holder 6 that holds the cover-type endoscope 2.

The cart 5 includes, for example, a light source device 7, a video processor 8, a fluid control device 9, and an endoscope cover extender (hereinafter referred to as an extender) used when the cover endoscope 4 is attached to the cover 3. 10) etc. are stored.
A monitor 11 is provided on the upper surface of the cart 5 to receive an image signal from the video processor 8 and display an endoscopic image.
Is placed.

The cover endoscope 4 is provided with an operation portion 12 which also serves as a large-diameter grip portion at the proximal end portion of the elongated endoscope insertion portion 14 on the proximal side.
The universal cord 13 is extended from the side portion of the operation portion 12, and the connector 19 is provided at the end portion of the universal cord 13.

The light source device 7 is detachably connected to the cover endoscope 4 via the connector 19 and supplies illumination light to the cover endoscope 4. The video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 21 extending from the side portion of the connector 19, and serves as an image pickup means built in the cover endoscope 4. The monitor 1 performs signal processing on signals output from the driving and imaging means, converts them into standard video signals, and monitors 1.
It is designed to output to 1.

The expansion device 10 is connected to an expansion tube 34, and is for expanding air by sending air into the cover 3 through the expansion tube 34, and the expansion of the cover 3 causes the cover endoscope 3 to be expanded. 4 can be easily attached or removed. When the cover 3 is attached to or detached from the cover endoscope 4, the cover holder 6
The cover holding tool 6 holds the base end side of the cover 3 to insert or remove the cover endoscope 4.

The cover 3 has a flexible insertion portion cover portion 22.
And a universal cord cover portion 24 and an operation portion cover portion 23 made of a thin and soft polymer material such as vinyl chloride, and the endoscope insertion portion 14 of the cover endoscope 4. , The operation part 12 and the universal cord 13 are respectively covered.

The fluid control device 9 is provided with an air supply control valve 35, a water supply control valve 36, a suction control valve 37, an air supply leak valve 38, and a suction leak valve 39. It is designed to be controlled by a valve.

The water suction control valve 37 has a suction tube 3
8 is connected, and an aspirator (not shown) is connected to the end portion of the endoscope 8 so that unnecessary body fluid or the like is sucked from the distal end portion of the endoscope. To the suction leak valve 39, a suction leak path 40 branched from the suction tube 38 is connected. A water supply tube 39 is connected to the water supply control valve 36, and a water supply tank 33 is connected to the tip of the water supply tube 39. further,
An air supply tube 40 is connected to the fluid control device 9, and a branch path 42 connected to the air supply control valve 35 and branched from the air supply tube 40 is connected to the water supply tank 33.
An air supply leak passage 43 branched from an air supply tube 40 is connected to the air supply leak valve 38.

As shown in FIG. 2, in the cover type endoscope 2, the cover endoscope 4 is attached to the insertion portion cover portion 22 of the endoscope cover 3.
The endoscope insertion part 14 is inserted. The insertion portion cover portion 22 is formed of a sheath 29 made of a flexible elastic material, a front end cover member 25 connected to the front end side thereof, and a mouth body portion 30 connected to the rear end side thereof. Is a lens cover 31 to which the optical system of the endoscope 4 for a cover to be inserted is provided, and this lens cover 31.
In close proximity to the suction pipe opening 20 and the air / water nozzle 32
Is provided. Then, as shown in FIG. 3, the cover endoscope insertion portion 14 having a non-circular cross section is inserted into the insertion portion cover portion 22.

As shown in FIG. 4, an endoscope insertion through hole 51 for inserting the cover endoscope 4 into the endoscope cover 3 and a treatment instrument substantially parallel to the endoscope insertion through hole 51. A channel tube 52, which serves as an insertion conduit, is inserted. The channel tube 52 includes, for example, a channel tube body 53 made of flexible tetrafluoroethylene having good slipperiness and a lumen member 5 made of porous tetrafluoroethylene having high bending resistance.
4 and. The channel tube main body 53 extends from the distal end cover member 25 to the mouth portion 30, while the curved portion 45 of the cover endoscope 4 attached to the endoscope cover 3 of the channel tube main body 53 is provided oppositely. It is slidably fitted onto the lumen member 54 within the range. Here, reference numeral 44 is a tip forming portion, and reference numeral 46 is a flexible tube portion.

The air / water supply nozzle 32 is for cleaning blood and dirt attached to the lens cover to drain water, so that water for cleaning and air for draining water may be ejected. It has become. Therefore, as shown in FIG. 5, the lens cover 31 is attached so as to slightly project from the tip end surface of the tip cover member so that water droplets attached to the lens cover surface can be easily blown off by air supply. .

Further, as shown in FIG. 2, the channel tube 52 inserted through the mouth 30 is connected to the forceps port 55, and the air supply tube 40 and the water supply tube 39 are led out from the inside of the mouth. ing.

The operation of the cover-type endoscope configured as described above will be described. As shown in FIG. 4, a cover type endoscope 2 in which an endoscope cover 3 and a cover endoscope 4 are combined.
The bending portion 45 is freely bent by bending the cover endoscope 4.

When the cover endoscope 4 is curved toward the channel tube 52 as shown in FIG. 6, the channel tube 52, which is the inside of the curved shape, has a relatively small bending radius, and the channel is made of tetrafluoroethylene. A deformation stress that causes buckling is applied to the tube body 53. However, since the lumen member 54 made of porous tetrafluoroethylene is externally fitted to the outer surface of the curved portion of the channel tube main body 53, even if the lumen member is bent to the bending radius as shown in the drawing, the lumen member 54 is bent. Since the member 54 is not crushed in the cross-sectional shape, the bending portion 45 of the cover endoscope 4 is prevented.
Channel tube 5 without being affected by the curvature of
2 is curved with the original circular shape secured. Therefore, the channel tube 52 can be smoothly inserted through a treatment tool such as forceps without bending or buckling.

As described above, the channel tube serving as a treatment instrument insertion conduit for inserting a treatment instrument such as forceps is formed of a tube made of ethylene fluoride and a lumen member made of porous tetrafluoroethylene. Since the lumen member made of polytetrafluoroethylene is externally fitted at a position corresponding to the bending portion on the distal end side of the tube made of tetrafluoroethylene, the tube is prevented from bending due to the bending of the cover endoscope. It is possible to inexpensively provide an endoscope cover provided with a channel tube that does not bend and has good insertability of the treatment tool.

Further, since the tubular member made of porous tetrafluoroethylene is fitted so as to be slidable with respect to the tube made of tetrafluoroethylene, the channel tube is directed inward or outward. When each of them is curved and the length in the axial direction changes, the lumen member made of porous tetrafluoroethylene slides on the channel tube, and the length is increased in the insertion portion cover part with a sufficient length in the axial direction. It is possible to suck the change in the thickness and prevent the channel tube from meandering significantly at the curved portion.

As shown in FIG. 7, the same effect can be obtained by inserting the porous tetrafluoroethylene tube 54 into the inner cavity of the channel tube 52 at the position corresponding to the curved portion of the channel tube body 53. it can.

8 and 9 relate to a modification of the first embodiment, FIG. 8 is an explanatory view showing a schematic structure of a channel tube, and FIG. 9 is a sectional view of an outer fitting portion of the channel tube.

As shown in FIG. 8, the channel tube 52
Channel tube body 5 made of tetrafluoroethylene
3 and a mesh tube 57 made of a metal wire.
Similar to the first embodiment, the mesh tube 57 is fitted on the channel tube body 53. The reticulated tube 57 is
Even when bent like the porous tetrafluoroethylene lumen member 54, the lumen can be secured without bending or collapsing, so that the treatment tool can be externally fitted to a tube made of tetrafluoroethylene. It becomes easy to secure the insertability of the.

Further, in order to give flexibility to the channel tube 52 itself, as shown in FIG. 9, a groove 58 is formed in the curved portion to improve the bendability.

The mesh tube 52 is replaced by the channel tube 5
When connecting to 2, the adhesive portion 59 is provided only on the tip side of the mesh tube 52.
By providing and fixing, it is possible to have an effect of smoothing the bending operation and preventing meandering.

FIG. 10 is a sectional view showing a schematic structure of a channel tube according to the second embodiment of the present invention.

As shown in the figure, the channel tube 52 is formed by connecting a lumen member 54 made of porous tetrafluoroethylene and a channel tube body 53 made of ethylene tetrafluoride via a connecting member. That is, the luminal member 54 made of porous tetrafluoroethylene is disposed in the curved portion, and the convex portion 55a that serves as both the escape portion and the tube fixing portion for improving the insertability of the treatment tool through the luminal member 54. Connect the connecting member 55 having the
A channel tube body 53 made of fluorinated ethylene is further connected. With this structure, the lumen member 5 made of high-cost porous tetrafluoroethylene is used.
Since it is sufficient to use 4 for a length corresponding to the curved portion of the cover endoscope, the material cost can be kept low in proportion to the length. Further, since the lumen member 54 and the channel tube main body 53 are simply fitted into the connecting member 55 even at the time of assembly, it is possible to provide a channel tube which saves the labor and reduces the cost as a whole. it can.

Although the channel tube body is made of tetrafluoroethylene tube in the above-mentioned embodiment, the channel tube body is not limited to the tetrafluoroethylene tube, and Irax or polychlorinated material can be used. It may be a tube formed of another inexpensive resin member having elasticity such as vinyl or polyurethane.

By the way, as shown in FIG.
Is connected to the mouthpiece body 62 having a forceps opening 61 through which the channel tube 52 communicates and the suction tube branches, and the cover endoscope insertion portion 1 connected to the cover endoscope operation portion 12.
4 and a connection port body portion 63 for guiding the insertion portion 4 to a predetermined position of the insertion portion cover portion 22. A nut 64 for fixing the endoscope operating portion 12 for the cover is provided on the connection opening 63 so as to be rotatable with respect to the connection opening 63.

An O-ring 65 is provided at the fitting portion between the mouth body 62 and the connection body 63, and the O-ring 65 is provided.
The connection mouth portion 63 is watertightly fitted and fixed to the mouth portion body 62. By guiding the insertion portion 14 of the cover endoscope 4 to a predetermined position of the insertion portion cover portion 22 and closely contacting the entire circumference of the insertion portion 14 with the connection body portion 63, the inside of the insertion portion cover portion 22 is closed. A seal member 66 made of an elastic resin member that is configured to be kept watertight is provided.

The nut 64, which is rotatably provided on the connection port body 63, is provided with the screw portion 6 on the cover endoscope operating portion 12.
It is configured so that it can be screwed to 7 and its mounting and fixing position can be adjusted.

In this way, when the mouth body is assembled by forming the mouth body by the body of the mouth body and the connection mouth body and water-tightly connecting the body of the mouth body and the connection mouth body, First, before fitting the connection mouthpiece to the mouthpiece body, it is possible to easily connect and fix the tubes such as the channel tube, the air supply tube, and the water supply tube.

Also, since the connection port body can be attached to and detached from the endoscope operating portion for the cover by the nut, the parts can be reused for economical use by washing and sterilizing them. It is designed so that you can do it.

Further, the screw portion provided on the operation portion of the endoscope for cover may be detachable from the operation portion so that cleaning and sterilization can be performed independently. By the way, when inserting the cover endoscope into the endoscope cover, air is blown by a dilator to expand the cover and the cover endoscope is inserted. However, when the endoscope for a cover comes to a position slightly forward from the tip end, there is a problem that the amount of insertion force becomes heavy due to the air pocket, and it is difficult to insert the cover endoscope to the end. Therefore, the above-mentioned inconvenience can be eliminated by constructing the cover endoscope as shown in FIGS.

As shown in FIG. 12, the front end surface of the front end forming portion 44 of the cover endoscope insertion portion 14 is provided with air for supplying air when it is inserted into the insertion portion cover portion 22 of the endoscope cover 3. While the air opening 71 is provided, an exhaust suction opening 72 is provided in the vicinity of the air sending opening 71 so that the pressure inside the insertion portion cover 22 does not rise above a predetermined value.

As shown in FIG. 13, an air supply conduit 75 communicating with the air supply opening 71 in the insertion portion 14 of the cover endoscope 4 and provided with an air supply port 73 in the operating portion 12 and the air supply conduit 75. An exhaust pipe line 76 having an exhaust port 74 is formed in the operation section 12 in communication with the exhaust intake port 72.

As described above, the air supply opening 71 and the exhaust air intake opening 72 are formed on the front end surface of the front end forming portion of the cover endoscope 4. Therefore, when the cover endoscope 4 is inserted into the insertion portion cover portion, the air supply port 73 of the operation portion 12 of the cover endoscope 4 is inserted.
From the air supply source 77 connected to the air supply pipe 77 while supplying air through the air supply pipe line 75, and the air inside the insert cover portion is pressurized as the cover endoscope 4 advances in the insert cover portion. Is exhausted from the exhaust inlet 74 through the exhaust port 74 via the exhaust pipe line 76 in the insertion portion. As described above, by providing the air supply opening and the exhaust suction opening at the tip end surface of the tip-forming portion of the cover endoscope 4, the insertion portion cover portion is appropriately expanded, and the insertion of the cover endoscope insertion portion is smoothly performed. Can be done. The same members as those in the above-described embodiment are designated by the same reference numerals and the description thereof will be omitted.

Further, as shown in FIG. 14, one air supply / exhaust pipe line 78 is provided in the insertion portion, and the air supply source 7 is provided at the hand side.
7 is provided with a switching valve 79 for switching between the exhaust port 74 and the switching valve 79 is appropriately switched to adjust the pressure inside the insertion portion cover portion, or a relief valve 80 is provided as shown in FIG. The pressure in the cover portion may be automatically adjusted.

By the way, in the cover type endoscope, since the air / water feeding pipeline and the water feeding tank are separate bodies, it is not only troublesome to connect the pipeline and the tank and to fill the water feeding tank with water, but also to There was a problem that it contaminated the water inside. Therefore, the above-mentioned problem can be solved by configuring the air / water feeding conduit of the cover-type endoscope as follows.

As shown in FIG. 16, an air supply conduit 81, a water supply conduit 82 and a suction conduit 83 extend from the base end of the endoscope cover 3. Then, pipe joints 84 are provided at the proximal ends of the air supply pipe 81, the water supply pipe 82, and the suction pipe 83, respectively. The fluid control device 9 includes an air supply control valve 35 and a water supply control valve 3 which are electromagnetic valves of a pinch valve type.
6, a suction control valve 37 is provided, and an air supply tube 85, a water supply tube 86, and a suction tube 87, which are made of a soft tube such as silicon, are detachably connected to each. It should be noted that one end of the air supply tube 85 is connected to the air supply cap 88 provided in the fluid control device 9 and the air supply leak path 4 is provided.
3 and a branch passage 42 connected to the water supply tank 33. The water supply tube 86 has the water supply tank 33 connected to one end thereof. Further, a suction device (not shown) is connected to one end of the suction tube 87, and the suction leak path 40 is branched. The air supply leak path 43 and the suction leak path 40 are detachably connected to an air supply leak valve 38 and a suction leak valve 39 provided in the fluid control device 9, respectively.

The operation of each conduit constructed as described above will be described. At the time of inspection, the air supply pipe 81, the water supply pipe 82, and the suction pipe 83 and the air supply tube 85, the water supply tube 86, and the suction tube 87 are connected and fixed via the pipe joint 84, and the operation of air supply, water supply, and suction is performed. Is controlled by the air supply control valve 35, the water supply control valve 36, the suction control valve 37, the air supply leak valve 38, and the suction leak valve 39.

At the end of the inspection, the air supply conduit 81, the water supply conduit 82 and the suction conduit 83 are removed from the conduit joints 84 of the air supply tube 85, the water supply tube 86 and the suction tube 87 and discarded together with the cover 3. Also, the air supply tube 8
5. The water supply tube 86 and the suction tube 87 are removed from the fluid control device 9 after performing a certain number of inspections, and are washed and disinfected together with the water supply tank 33 so as to be used for inspection again, or a certain number of inspections are performed. It may be discarded at the point of time.

Further, when the treatment in the body cavity is performed using a high frequency treatment instrument or the like, a flame-retardant gas such as CO 2 gas may be fed into the body cavity instead of the gas feeding operation. In this case, a gas feeding tube 89 is used instead of the gas feeding tube 85 as shown in FIG. The gas supply tube 89 is made of a flexible tube such as silicon, has a gas supply source 90 such as a CO2 gas cylinder connected to one end thereof, and is substantially the same as the branch passage 42 having one end connected to the water supply tank 33. A gas supply branch passage 91 having an inner diameter is provided. The inner diameter of the end of the gas supply tube 89 connected to the air supply conduit 81 of the cover 3 and the air supply control valve 3
The outer diameter dimension of the portion connected to 5 is the air supply tube 8
The inner diameter dimension and the outer diameter dimension of No. 5 are substantially the same as each other, and are detachably connected to the air supply control valve 35, and the ends thereof are configured to be connectable to the air supply conduit 81.

At the time of inspection, the operator selectively selects either one of the gas supply tube 85 and the gas supply tube 89 depending on which operation of gas supply or gas supply is to be performed, and then the operator selects the fluid control device 9. In addition to being connected, it is connected to the air supply conduit 81 of the cover 3 and controlled by the air supply control valve 35.

In this embodiment, the conduits for air supply, water supply, and suction are the air supply conduit 81 and the water supply conduit 8 on the endoscope cover side.
2. Suction line 83 and air supply tube 8 on the fluid control device side
5, the water supply tube 86, and the suction tube 87 are divided and detachably connectable. For this reason, it is not necessary to discard the air supply tube 85, the water supply tube 86, and the suction tube 87 that are not inserted into the body cavity for each test, and thus each conduit is connected to the air supply control valve 35 of the fluid control device 9 and the water supply control The labor for connecting to the pinch valves such as the valve 36 and the suction control valve 37, the water tank 33, and the suction device can be saved, the preparation before the inspection can be eased, and the preparation time can be greatly shortened. In addition, erroneous attachment of each conduit to the fluid control device is reduced, and the conduit provided on the endoscope cover 3 is simplified, so that the endoscope cover 3 can be manufactured at low cost. There is also.

Therefore, the gas feeding tube 8 which is rarely used
Since 9 is not integrated with the air supply tube 85 and one of them can be selectively connected to the endoscope cover 3, the volume of the air supply tube 85 is reduced, so that the operation of air supply / gas supply can be prevented. The response is good, and the air in the gas feeding tube compressed by the air feeding pressure during air feeding expands when the air feeding operation stops as in the case where the gas feeding tube 89 and the air feeding tube 85 are integrally provided. Since the gas supply tube 85 and the gas supply tube 89 are simplified, the air supply can be stopped at a low cost.

Further, in the pipeline system shown in FIG.
6 and air supply pipe 81, water supply pipe 82 and suction pipe 83, air supply tube 85, water supply tube 86 and suction tube 8
The structure of the water supply tank and the pipe joint, which is the connecting portion with 7, are replaced.

That is, as shown in the figure, the endoscope cover 3
The end portions of the air supply conduit 81, the water supply conduit 82, and the suction conduit 83 extending from are connected to the cover side connector 95 to be integrated. The air supply conduit 81, the water supply conduit 82, and the suction conduit 83 are communicated with each other inside the cover-side connector 95 to project toward the tip side to form a convex portion 98. on the other hand,
The ends of the air supply tube 85, the water supply tube 86, and the suction tube 87 are connected to and integrated with the tube side connector 96, and the tube side connector 96 has an air supply tube 85, a water supply tube 86, and a suction tube 87.
An opening 97 that communicates with the tube side connector 96 is provided.
The cover side connector 95 and the tube side connector 96 are detachably connected and fixed by being inserted into the opening 97.

The tube-side connector 96 and the cover-side connector 95 are provided with alignment indexes 99 for preventing erroneous connections, and these indexes are aligned during inspection to cover-side connector 95 and tube-side connector 96.
And the air supply line 81 is connected to the air supply tube 85,
The water supply conduit 82 and the suction conduit 83 are surely connected to the water supply tube 86 and the suction tube 87, respectively.

At the end of the inspection, the cover side connector 95 and the tube side connector 96 are removed and the endoscope cover 3 is discarded. As shown in FIG. 19, the end of the branch passage 42 of the air supply tube 85 and the end of the water supply tube 86 are provided at the flexible container 1
01 sterilized water pack 1 filled with sterilized water 102
03, and the air supply tube 85 and the water supply tube 86 are formed integrally with the sterile water pack 103. Further, the valve body 1 having the opening / closing cock 104 at the connecting portion between the flexible container 101 and the water supply tube 85 and the branch passage 42.
05 is provided, and the flow path between the sterilized water pack 103 and the air supply tube 85 and the water supply tube 86 can be opened and closed by rotating the opening / closing cock 104. Before storing the sterilized water pack 103 before inspection, the flow path is closed when the sterilized water pack 103 is stored or transported, so that the sterilized water
The inflow of 02 is prevented.

As described above, since the fluid line on the endoscope cover side and the fluid line on the fluid device side are collectively provided in the cover side connector and the tube side connector, respectively, the air supply line, the water supply line, and the suction line. Since it is not necessary to connect each of the pipeline to the air supply tube, the water supply tube, and the suction tube, preparation before the inspection is simplified and the preparation time can be shortened.

Further, since the sterilized water pack is formed integrally with the air supply tube and the water supply tube, the labor for connecting them before the inspection can be saved and the water supply solution into the body cavity can be prevented from being contaminated. Is.

By the way, when the endoscope cover and the cover endoscope are detached from each other, the cover tip portion is deformed to fit the convex portion provided on the inner circumference of the cover tip into the concave portion provided in the cover endoscope. However, there were problems that the shape of the tip of the cover had a large diameter and the fixing accuracy was low. Also,
Since various conduits are not fixed inside the endoscope cover, when inserting the cover endoscope into the endoscope cover, each conduit is entangled with the cover endoscope insertion portion. Therefore, there was a problem that the insertability was impaired. Therefore, the above-mentioned problems can be solved by configuring the endoscope cover as follows.

As shown in FIG. 20, a cover endoscope 201 is provided.
A distal end hard portion 203 is provided at the distal end of the insertion portion of the, and a groove portion 208 is formed in the distal end hard portion 203 so that a stopper 205 provided on the distal end cover 204 of the endoscope cover 202 fits. ing. Tip cover 20
4 is slidable in the outer peripheral direction, and the projection 206 of this stopper 205 projects toward the inner peripheral surface of the tip cover portion and is dropped into the groove portion 208 provided in the tip hard portion 203. The axial displacement is prevented. The stopper 205 is covered with a sheath 208, and the sheath 208 is watertightly attached to the distal end cover portion 204 on the distal end side of the stopper 205. An elastic rubber band 209 that presses the stopper 205 inward is provided on the outer circumference of the sheath 208 that covers the stopper 205.

Incidentally, the stopper 205 and the sheath 20
8 and the elastic rubber band 209 are bonded so that the stopper 205 can slide at this position. Further, the notch portion 2 is provided on the tip hard portion 203 on the tip side of the groove portion 207.
10 is provided, and the groove portion 2 is provided in the cutout portion 210.
An inclined portion 211 that rises toward 07 is formed.

Further, as shown in FIG. 21 (a), the sheath 2
A water supply conduit 213, a channel 214, and an air supply conduit 215 are provided in the interior of 08, and these conduits are covered with a protective tube 216 so as to be in close contact with each other on the hand side. However, on the tip side, as shown in (b) of the figure, since the respective conduits cannot be brought into close contact with each other due to the processing and strength of the distal end cover portion 204, they are attached to the distal end cover portion 204. However, they are arranged with some clearance. For this reason, the protection tube 2
16 so that the protective tube 216 has a cutting portion 2 at the tip thereof.
17 is provided, and the protective tube 216 is expanded and attached. As a result, the end portion of the protective tube 216 and the end surface of the distal end cover portion 204 are adhered by abutting the end portions so that there is no step on the insertion passage side of the cover endoscope 201.

The operation of the cover-type endoscope configured as described above will be described. As shown in FIG. 22, the cover endoscope 20
In the process of attaching 1 to the endoscope cover 202, immediately before the distal end hard portion 203 is attached to the distal end cover portion 204, the inclined portion 211 causes the stopper 205 to move most in the outer peripheral direction and is in a state of being lifted high.
Here, when the tip hard portion 203 is pushed further toward the tip side, the stopper 205 falls into the groove 207 and is locked as shown in FIG.

The tip hard portion 203 and the tip cover portion 2
When the lock with 04 is released, the elastic band 209 is removed from the outer periphery of the tip cover portion 204 and flipped as shown in FIG. The stopper 205 adhered to 208 is disengaged from the groove 207 of the distal end hard portion 203 as in FIG.
It can be removed from 04.

In this way, the tip hard portion can be easily attached by inserting the hard tip portion into the tip cover portion and pushing it in at the end, and when detaching it, the elastic band can be removed and pulled to facilitate the attachment and detachment. Moreover, since there is no step between the conduit side and the tip cover portion by the protective tube, it is easy to introduce the hard tip portion into the tip cover portion, and the detachability is further improved.

Furthermore, as shown in FIG. 24, the tip hard portion 203 is fitted and attached to the tip cover portion 204, so that the structure of the tip portion can be simplified.
In this case, the tapered portion 2 is formed on the inner peripheral surface of the tip cover portion 204.
A protrusion 218 having 21 is formed, and an elastic member 219 is provided so as to face the protrusion 218. The tip hard portion 203 has a groove 220 at a position corresponding to the protrusion 218.
Is formed.

A flat surface portion 222 is formed on the side surface of the inner periphery of the tip end cover portion 204 where the elastic member 219 and the protruding portion 218 are provided so as to face each other.
The side surface of the hard tip portion 203 is also formed to be flat so as to be fitted with the tip 22.

Therefore, when the hard tip portion 203 is pushed toward the tip, the groove portion 220 of the hard tip portion 203 is pressed.
The portion on the tip side of is pushed up along the taper portion 221 of the protrusion 218 of the tip cover portion 204. At this time, the elastic member 219 is crushed as shown in FIG. 25, and when the tip hard portion 203 is further pushed in here, as shown in FIG. 24, the protrusion 218 is dropped into the groove 220 and fixed. In addition, when removing, the protrusion 218 of the tip cover part 204 and the groove part 220 of the tip hard part 203 may be displaced and the tip hard part 203 may be pulled in the axial direction to be removed.

Further, as shown in FIG. 26, the elastic band 209
Is attached directly to the outer periphery of the stopper 205, and the sheath 208
Since it is not necessary to install the elastic band 209 on the sheath 208 by attaching the elastic band 209 to the outer periphery of the tip cover portion 204 on the rear end side of the elastic band 209, the diameter can be reduced. In this case, the elastic band 209 is watertightly attached to the tip cover part 204 in the vicinity of the stopper 205 so that the stopper 205 can slide.

For this reason, when removing as in the case of FIG. 20, the elastic band 209 is flipped over to pull up the tip cover portion 2.
The elastic band 209 is broken from 04 and the stopper 205 is not removed, and the distal end hard portion 203 is attached to the distal end cover portion 20.
It can be removed axially from 4.

[0074]

As described above, according to the present invention, the construction of the treatment instrument insertion conduit is simple, and the treatment instrument insertion passage is not bent even when the cover endoscope is bent. It is possible to provide a cover-type endoscope having a good and economical endoscope cover.

[Brief description of drawings]

1 to 6 relate to a first embodiment of the present invention,
FIG. 1 is a perspective view showing a schematic configuration of an endoscope apparatus.

FIG. 2 is a perspective view showing an outline of a cover-type endoscope.

FIG. 3 is a view showing an endoscope cover and a cover endoscope that is inserted into the endoscope cover.

FIG. 4 is a sectional view showing a schematic configuration of a cover-type endoscope.

FIG. 5 is a cross-sectional view showing the relationship between the lens cover and the nozzle of the cover-type endoscope.

FIG. 6 is a cross-sectional view showing a curved state of the cover-type endoscope.

FIG. 7 is a diagram showing an application example of a channel tube.

8 and 9 relate to a modification of the first embodiment, and FIG. 8 is an explanatory view showing a schematic configuration of a channel tube.

FIG. 9 is a sectional view of an outer fitting portion of a channel tube.

FIG. 10 is a sectional view showing a schematic configuration of a channel tube according to a second embodiment of the present invention.

FIG. 11 is a cross-sectional view showing a schematic configuration of a mouth part.

12 to 15 are related to a method of mounting a cover endoscope on an endoscope cover, and FIG. 12 is a diagram showing an outline of a cover endoscope.

FIG. 13 is an explanatory view showing air supply and exhaust of the cover endoscope.

FIG. 14 is an explanatory view showing another example of air supply and exhaust of the cover endoscope.

FIG. 15 is an explanatory view showing another example of air supply and exhaust of the cover endoscope.

FIG. 16 is an explanatory diagram showing a connection state of various channel tubes.

FIG. 17 is an explanatory diagram when a gas feeding tube is arranged.

FIG. 18 is a view showing a connecting portion of each channel tube.

FIG. 19 is a diagram showing a sterile water pack.

FIG. 20 is a cross-sectional view showing a schematic configuration of a locking portion of a cover-type endoscope.

FIG. 21 is a front sectional view of FIG.

FIG. 22 is a cross-sectional view showing a state where the stopper is about to be locked in the groove.

FIG. 23 is a view showing a state in which the cover endoscope is removed from the endoscope cover.

FIG. 24 is a cross-sectional view showing a schematic configuration showing another example of the locking portion of the cover-type endoscope.

FIG. 25 is a cross-sectional view showing a state where the stopper is about to be locked in the groove.

FIG. 26 is a transverse cross-sectional view showing a schematic configuration showing another example of the locking portion of the cover-type endoscope.

[Explanation of symbols]

 2 ... Cover-type endoscope 3 ... Endoscope cover 4 ... Cover endoscope 52 ... Channel tube 54 ... Lumen member

Claims (1)

[Claims] 1. An endoscope for a cover, an endoscope insertion portion through which the endoscope for a cover is inserted, and a flexible treatment instrument insertion conduit disposed in parallel with the endoscope insertion portion. In a cover-type endoscope that is combined with an endoscope cover that is provided, at least the curved portion of the cover endoscope that is attached to the endoscope cover of the treatment instrument insertion conduit disposed in the endoscope cover is A cover-type endoscope in which a flexible and highly flexible lumen member is disposed at a position to be installed.