JP3454893B2 - Cover-type endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to the insertion of a flexible treatment tool and the like.
Disposable covering endoscope with covering conduit
Related to an endoscope cover. [0002] 2. Description of the Related Art In recent years, endoscopes have been used in medical and industrial fields.
Widely used. For example, for use in the medical field
The endoscope is inserted into the body cavity to observe organs
Or a treatment instrument inserted into the treatment instrument channel of the endoscope
Can be used to perform various treatments and treatments.
ing. For this reason, in the endoscope system,
Various peripheral devices for endoscopy are used depending on the purpose and application
Have been. [0003] Endoscopes used for these various purposes and applications
Endoscope systems, including peripheral equipment for microscopy, are simply inspected.
Not only is it useful for
Is more important than ever.
It has become a challenge. Therefore, in order to reduce inspection costs, a plurality of
Prepare an endoscope and clean and disinfect the endoscope during the cleaning and disinfection time.
Can be used to increase inspection efficiency.
But in this case the cost of purchasing an endoscope is
The problem of increase arises. For this reason, US Pat. No. 4,646,722 discloses that
Disposable endoscope sheath (hereinafter referred to as endoscope cover)
Proposed. This endoscope cover can be used
Insert the endoscope covered with the endoscope cover into the body cavity
And insert the endoscope
Discard the endoscope cover and replace the endoscope with a new one.
The bar was overturned and used for the next inspection.
You. The use of the endoscope cover enables cleaning and erasing.
Reduce poison time (1 hour) to cover replacement time (10 minutes)
Can perform more than double examinations with one endoscope
Is possible, greatly increasing the cost of a single endoscopy
Can be reduced. [0006] SUMMARY OF THE INVENTION However, endoscopes
Even though the cover is disposable, it is shaped into an endoscope cover
The treatment instrument insertion conduit that has been
Endoscope used without coating the bar
Configuration similar to the forceps insertion channel of the endoscope
Met. That is, for inserting forceps into a general type endoscope.
The channel does not bend for bending such as bending motion
Various modifications have been made, for example, insertion of forceps
A groove is formed in the tube body that forms the channel for
It can be formed by incorporating a coil made of metal wire,
The insertion channel is made of porous tetrafluoroethylene
It was formed of a tube. For this reason, the coil body is formed by incorporating the coil body.
The forceps insertion channel takes time to assemble
High cost, from porous tetrafluoroethylene tube
The tube for forceps insertion using a tube
This tube can be inserted through an endoscope
The cost increases by preparing for the entire length of the entrance.
One-time cost to use disposable endoscope cover
Is expensive and not economical. The present invention has been made in view of the above circumstances.
The configuration of the treatment instrument insertion pipe is simple, and
Do not bend even when bending due to the bending of the endoscope.
Endoscope cover with good treatment tool penetration and economical
It is intended to provide a cover-type endoscope provided with
You. [0010] SUMMARY OF THE INVENTIONCover-type endoscope
IsInsert the endoscope for the cover and the endoscope for the cover
The endoscope insertion part and the endoscope insertion part
ReConsisting of tetrafluoroethyleneEquipped with a treatment instrument insertion pipe
Cover type endoscope combined with an endoscope cover
Endoscope cover for the treatment instrument insertion in the endoscope cover.
Of the endoscope for the cover attached to the mirror coverEquivalent to a curved part
A lumen member made of porous tetrafluoroethylene only at the site or
Is a mesh tubeIs provided. [0011] According to this structure, the camera mounted on the endoscope cover is provided.
When the bar endoscope is bent, the cover endoscope
The treatment instrument insertion conduit at the position opposite to the curved part of the mirror is flexible,
And, since it is formed of a highly flexible lumen member,
Since it bends without buckling or bending, the treatment instrument insertion tube
The treatment tool smoothly passes through the road. [0012] Embodiments of the present invention will be described below with reference to the drawings.
I do. 1 to 6 relate to a first embodiment of the present invention.
1 is a perspective view showing a schematic configuration of an endoscope apparatus, and FIG. 2 is a cover.
FIG. 3 is a perspective view schematically showing an endoscope, and FIG.
FIG. 3 is a diagram showing a cover endoscope inserted through an endoscope cover,
4 is a sectional view showing a schematic configuration of a cover type endoscope, and FIG.
A cross section showing the relationship between the lens cover and the nozzle of a bar-type endoscope.
FIG. 6 is a sectional view showing a curved state of the cover type endoscope.
is there. As shown in FIG. 1, the endoscope apparatus 1 has a cover
It is a device having a type endoscope 2. The cover type endoscope 2
Endoscope cover (hereinafter abbreviated as cover) 3 and this cover
3 and a cover endoscope 4 attached to the
ing. The endoscope apparatus 1 includes the cover type endoscope 2.
And various peripheral devices to which the cover type endoscope 2 is connected.
Holding the cart 5 having the inside and the cover type endoscope 2
And a cover holder 6. The cart 5 has, for example, a light source device 7,
Covers the video processor 8, the fluid control device 9, and the cover 3.
Endoscope cover extender used when attaching endoscope 4 for use
(Hereinafter, abbreviated as an expander) 10 and the like are stored.
A video processor 8 is provided on the upper surface of the cart 5.
Monitor 11 which receives the video signal and displays an endoscope image
Is placed. The cover endoscope 4 is an elongated endoscope insertion portion.
An operation unit 12 serving also as a large-diameter grip at the proximal end of the hand 14
Are connected to each other.
And extend the end of the universal cord 13.
Is provided with a connector 19. The light source device 7 is connected via the connector 19
It is detachably connected to the endoscope 4 for the cover, and the endoscope for the cover
The illumination light is supplied to the mirror 4. Also, bidet
The processor 8 extends from the side of the connector 19
Detachable from the cover endoscope 4 via a signal cable 21
Connected to the camera, and the imaging incorporated in the cover endoscope 4
For the driving of the means and for the signal output from the imaging means
Performs signal processing, converts it to a standard video signal, and
1 is output. The dilator 10 has an expansion tube 34 connected thereto.
Then, air is introduced into the cover 3 through the expansion tube 34.
It is intended to be extended by sending
The cover 3 can be attached or detached with the cover endoscope 4.
It can be easily done. The endoscope 4 for this cover
When attaching or removing the cover 3, the cover holder 6
And the base end of the cover 3 by, for example, the cover holder 6.
Insert or remove the cover endoscope 4 while holding the side
It has become. The cover 3 includes a soft insertion portion cover 22.
And a thin and soft polymer material such as vinyl chloride
Constructed operation unit cover 23 and universal cord
And a cover 24.
Endoscope insertion section 14, operation section 12, universal connector of mirror 4
The card 13 is covered with each. The fluid control device 9 includes an air supply control valve 35,
Water control valve 36, suction control valve 37, air supply leak valve 38, suction
A pull leak valve 39 is provided to control air supply, water supply, and suction.
Is controlled by a solenoid valve. The water suction control valve 37 has a suction tube 3.
8 is connected, and a suction device (not shown) is connected to an end of the suction device.
So that unnecessary body fluids etc. are sucked from the endoscope end.
Has become. A suction tube 38 is provided for the suction leak valve 39.
The branched suction leak path 40 is connected. Water supply system
A water supply tube 39 is connected to the control valve 36,
The water supply tank 33 is connected to the tip. further,
An air supply tube 40 is connected to the fluid control device 9.
And is connected to the air supply control valve 35 and is separated from the air supply tube 40.
The branched branch path 42 is connected to the water supply tank 33.
An air supply leak valve 38 is connected to an air supply tube
The air leak path 43 is connected. As shown in FIG. 2, the cover type endoscope 2 is
The cover endoscope 4 is inserted into the insertion portion cover portion 22 of the endoscope cover 3.
Is inserted. Previous
The insertion portion cover 22 is made of a sheath made of a flexible elastic material.
29, and a tip cover member 25 and
And a mouth part 30 connected to the rear end side.
The optical system of the cover endoscope 4 inserted into the bar member 25
And a lens cover 31 opposed to the lens cover 31
Near the suction pipe opening 20 and the air / water supply nozzle 32
Is provided. Then, as shown in FIG.
The cover 22 has a non-circular cover endoscope
The mirror insertion section 14 is inserted. As shown in FIG. 4, the endoscope cover 3 has a cover.
And an endoscope insertion through hole 51 through which the endoscope 4 is inserted.
A treatment instrument insertion conduit substantially parallel to the endoscope insertion through-hole 51 is formed.
Channel tube 52 is inserted therethrough. This Chan
The tunnel tube 52 is, for example, a flexible 4-foot
Channel tube 53 made of fluorinated ethylene
Lumen member 5 made of highly flexible porous tetrafluoroethylene
And 4. The channel tube body
53 extends from the distal end cover member 25 to the mouth part 30
On the other hand, the endoscope cover of the channel tube body 53
The curved portion 45 of the endoscope for cover 4 attached to 3 is opposed to the curved portion 45.
It is slidably fitted outside the lumen member 54 within a range. This
Here, reference numeral 44 denotes a distal end component, and reference numeral 46 denotes a flexible tube portion.
You. The air / water supply nozzle 32 is provided with a lens cover.
To wash and drain blood and dirt attached to the bar
Water for washing and emptying for draining
Chi is gushing out. Therefore, as shown in FIG.
As shown, the lens cover 31 is
The attached water droplets can be easily blown off by air supply.
Slightly protrudes from the tip surface of the tip cover member
So that it is attached. Also, as shown in FIG.
Is inserted into the forceps port 55
Communication, the air supply tube 40 and the water supply tube 39
It is led out of the department. The production of the cover type endoscope constructed as described above
Will be explained. As shown in FIG. 4, the endoscope cover 3
Cover type endoscope 2 combined with cover endoscope 4
Is obtained by bending the endoscope 4 for a cover.
The curved portion 45 is freely curved. As shown in FIG. 6, the cover endoscope 4 is
When curved to the channel tube 52 side, the inside of the curved shape
Has a relatively small bending radius.
Channel tube made of tetrafluoroethylene
Deformation stress that causes buckling is applied to the main body 53.
You. However, the curved shape of the channel tube body 53
Lumen made of porous tetrafluoroethylene on the outer surface of the site
Since the member 54 is fitted outside, the bending half
Even if it is bent to a diameter, the cross-sectional shape of the lumen member 54 is crushed.
The bending portion 45 of the cover endoscope 4 does not
Channel tube 5 without being affected by the curvature of the channel
2 bends while maintaining the original circle. For this reason,
Bending or buckling of the channel tube 52
Without the need for smooth insertion of treatment tools such as forceps
You. As described above, a treatment tool such as forceps is inserted.
Fluoride the channel tube that is the
From tube made of Tylene and porous tetrafluoroethylene
Made of porous tetrafluoroethylene
The luminal member made of a tube made of tetrafluoroethylene
The outer fitting at the position corresponding to the curved portion on the end side
The tube does not respond to the bending motion caused by the bending of the bar endoscope.
A channel tube that does not bend and has good penetration of the treatment tool
Endoscope cover with a probe can be provided at low cost.
You. A tube made of porous tetrafluoroethylene
Slide the cavity member against the tube made of tetrafluoroethylene.
The channel tube is inserted so that it can move.
Curved in the inner or outer direction, and
When the direction length changes, porous tetrafluoroethylene
Lumen member consisting of
Length change in the insertion section cover with sufficient length in the
Can be suctioned, and the channel tube is
Meandering can be prevented. As shown in FIG.
Corresponding to the curved portion of the channel tube body 53 of the
A porous tetrafluoroethylene tube 54 in the lumen
Similar effects can be obtained by interpolation. FIGS. 8 and 9 show a modification of the first embodiment.
FIG. 8 illustrates the schematic configuration of the channel tube.
FIG. 9 and FIG. 9 are cross-sectional views of the outer fitting portion of the channel tube.
You. As shown in FIG.
Tube body 5 made of ethylene tetrafluoride
3 and a mesh tube 57 made of a metal wire.
As in the first embodiment, the channel tube body 53
The mesh tube 57 is externally fitted. The mesh tube 57 is
Bend in the same manner as the porous tetrafluoroethylene lumen member 54
To secure the lumen without bending or crushing
To a tube made of tetrafluoroethylene
It is possible to secure the penetration of the treatment tool by external fitting
It will be easier. The channel tube 52 itself is flexible.
As shown in FIG. 9, a groove 58 is
It is formed to improve the bendability. The mesh tube 52 is connected to the channel tube 5
2, the bonding portion 59 is provided only on the tip side of the mesh tube 52.
To secure the bending motion smoothly.
An effect of preventing dripping and meandering can be provided. FIG. 10 shows a channel according to a second embodiment of the present invention.
It is sectional drawing which shows the schematic structure of a flannel tube. As shown in FIG.
Lumen members 54 and 4 foot made of porous tetrafluoroethylene
With the channel tube body 53 made of
It is formed by connecting via a connecting member. That is, porous
A luminal member 54 made of porous tetrafluoroethylene is disposed in the curved portion.
To improve the penetrability of the treatment tool into the lumen member 54.
The raised portion 55a which also serves as the relief portion and the tube fixing portion is provided.
The formed connection member 55 is connected, and 4
Channel tube body 53 made of fluorinated ethylene
Also connected. With this configuration,
Lumen member 5 made of porous polytetrafluoroethylene with high cost
4 is used only for the length corresponding to the curved portion of the endoscope.
Material cost in proportion to its length.
Can be obtained. Also, when assembling, the lumen member
54 and channel tube main body 53 to connecting member 55
Because it only fits, it takes less time and costs
Can provide a channel tube with reduced
Wear. In the above embodiment, the channel
The tube body is made of tetrafluoroethylene tube
However, the channel tube body is
Is not limited to ethylene nitride
With other elastic properties such as
Tube made of inexpensive resin material
No. By the way, as shown in FIG.
The channel tube 52 communicates with the suction tube.
Mouth body main body 62 provided with branching forceps port 61, cover
Endoscope insertion section 1 connected to endoscope operating section 12 for cover
Connection body for guiding 4 to a predetermined position of insertion part cover part 22
And a section 63. The connection port body 63 includes
Nut 64 fixing endoscope operation unit 12 for cover is connected
It is provided rotatably with respect to the mouth part 63. The connection between the mouth body 62 and the connection body 63
An O-ring 65 is provided at the fitting portion.
The connection mouth part 63 is fitted to the mouth body main body 62 in a watertight manner.
It is fixed. This connector 63 has
Insert the insertion portion 14 of the bar endoscope 4 at the insertion portion cover portion 22
Guide it to the fixed position and make sure it is
To keep the inside of the insertion section cover 22 watertight.
A sealing member 66 made of an elastic resin member is provided.
ing. A connector rotatably provided on the connection port 63.
The screw 64 is provided on the screw section 6 of the cover endoscope operating section 12.
7 and adjust the fixing position
It is configured to work. As described above, the mouth part is connected to the mouth part body and the connection port.
The body of the mouth and the connection body are connected in a watertight manner.
By assembling the mouth part,
Before fitting the mouth to the mouth body,
Tubes, air supply tubes and water supply tubes
The connection can be easily fixed. The connection port is covered with a nut.
These units can be attached to and detached from the endoscope operation unit.
Reuse parts by cleaning and sterilizing them
Is designed to be economical to use
You. Further, it is provided in the cover endoscope operation section.
By making the screw part detachable from the operation part,
It may be configured so that cleaning and sterilization can be performed independently.
No. By the way, insert the cover endoscope into the endoscope cover.
When expanding, the cover is expanded by blowing air with
A bar endoscope was inserted. But
The endoscope for the cover came to a position slightly before the tip
Sometimes, the amount of insertion force becomes heavy due to air pockets,
Such as not being able to insert it to the end
There was a condition. Therefore, as shown in FIGS.
By constructing the endoscope for the cover,
Can be eliminated. As shown in FIG. 12, an endoscope insertion portion for a cover is provided.
The endoscope cover 3 is inserted into the distal end surface of the distal end component 44 of the endoscope 14.
Air supply for air supply when inserted into the inlet cover 22
An opening 71 is provided and inserted near the air supply opening 71.
So that the pressure inside the unit cover 22 does not rise above a predetermined value.
An exhaust suction opening 72 for performing exhaust is provided. Then, as shown in FIG.
An operation unit communicates with the air supply opening 71 to the insertion portion 14 of the mirror 4.
An air supply pipe 75 having an air supply port 73 at
The operation unit 12 is provided with an exhaust port 74 in communication with the air intake opening 72.
The exhaust pipe 76 is formed. As described above, the configuration of the distal end of the cover endoscope 4
An air supply opening 71 and an exhaust suction opening 72 are formed at the tip end surface.
Was. For this reason, the cover endoscope 4 is inserted into the insertion portion cover.
When entering, the air supply port 73 of the operation unit 12 of the cover endoscope 4
From the air supply source 77 connected to the
The endoscope for cover 4 is inserted
The inside of the insertion part cover that is pressurized as
Air is discharged from the exhaust suction opening 72 to the exhaust pipe 76 in the insertion portion.
The air is discharged from the exhaust port 74 through the air outlet. Like this, hippo
Air supply opening and exhaust
Providing an insertion opening allows the insertion section cover to be
Inflate and insert the endoscope insertion part smoothly.
I can. The same members as those in the above embodiment have the same reference numerals.
And the description is omitted. Also, as shown in FIG.
A pipe 78 for air supply and exhaust is provided, and the air supply source 7 is
A switching valve 79 for switching between the exhaust port 7 and the exhaust port 74 is provided.
By switching the switching valve 79 as needed, the insertion cover
Adjust the pressure or release as shown in FIG.
The pressure in the insertion section cover is automatically reduced by providing the
You may make it adjust dynamically. By the way, in the cover type endoscope, air supply and water supply are performed.
Since the pipeline and water tank were separate, the pipeline and tank
It only takes time to connect to the water and inject water into the water tank.
And contaminate the water in the tank
there were. Therefore, the air and water supply conduits of the cover-type endoscope are described below.
The above problem is solved by configuring as below
be able to. As shown in FIG. 16, the proximal end of the endoscope cover 3
From the air supply line 81, the water supply line 82 and the suction line 83
Is extended. And these air supply lines 81, water supply lines
82 and the suction pipe 83 at the proximal end of the pipe
A hand 84 is provided. The fluid control device 9 has a pinch valve
Air supply control valve 35, water supply control valve 3, which is a solenoid valve
6. A suction control valve 37 is provided.
Air supply tube 85 consisting of flexible tubes such as concrete, water supply
Tube 86 and suction tube 87 are detachably connected.
ing. The air supply tube 85 has one end connected to a fluid control device.
9 is connected to the air supply base 88 provided in the
3 and a branch 42 connected to the water supply tank 33 are provided.
Have been. The water supply tube 86 has a water supply
Link 33 is connected. Further, the suction tube 87
A suction device (not shown) is connected to one end.
Thus, the suction leak path 40 is branched. The air leak
The path 43 and the suction leak path 40 are respectively connected to the fluid control device 9.
Detachable to provided air supply leak valve 38 and suction leak valve 39
It can be connected freely. The operation of each of the pipelines configured as described above will be described.
I do. At the time of inspection, air supply line 81, water supply line 82 and suction
Pipe 83, air supply tube 85, water supply tube 86 and suction
The pulling tube 87 is connected and fixed via a pipe joint 84.
The operation of air supply, water supply and suction is performed by the air supply control valve 35,
Water control valve 36, suction control valve 37, air supply leak valve 38, suction
Controlled by the pull valve 39. At the end of the inspection, the air supply line 81
The water pipe 82 and the suction pipe 83 are connected to the air supply tube 85,
From the pipe joint 84 of the tube 86 and the suction tube 87
Remove and discard with cover 3. In addition, the air supply tube 8
5, a certain number of water supply tubes 86 and suction tubes 87
After the inspection, remove from the fluid control device 9 and send water
Wash and disinfect with tank 33 and use again for inspection.
Should be discarded after a certain number of tests
It may be. Further, the treatment in the body cavity is performed by using a high-frequency treatment device or the like.
When performing installation, use CO2 gas instead of air supply operation.
In some cases, a flame-retardant gas is supplied into the body cavity. This
In the case of, as shown in FIG.
Instead, a gas feed tube 89 is used. This gas transmission
The tube 89 is made of a flexible tube made of silicon or the like.
Is connected to a gas supply source 90 such as a gas cylinder for CO2 gas.
The branch passage, one end of which is connected to the water supply tank 33.
A gas feed branch 91 having substantially the same inner diameter as 42 is provided.
Have been. The cover 3 of the gas feeding tube 89
Inner diameter of end connected to air supply line 81 and air supply control valve 3
The outer diameter of the part connected to the air supply tube 5 is
5 are almost the same as the inner and outer diameters, respectively.
And is removably connected to the air supply control valve 35,
It is configured to be connectable to the pipeline 81. At the time of the examination, the operator performs any operation of air supply and gas supply.
Air supply tube 85 or gas supply tube
The fluid control device is selected by selecting one of the
Connected to the gas supply line 81 of the cover 3
Then, it is controlled by the air supply control valve 35. In this embodiment, air supply, water supply, and suction
To the air supply line 81 and the water supply line 8 on the endoscope cover side.
2. Suction line 83 and air supply tube 8 on the fluid control device side
5, divided into water supply tube 86 and suction tube 87
Removably connectable. For this reason,
The air supply tube 85, water supply tube 86 and suction
Inspection because it is not necessary to discard the pull tube 87 for each inspection
Each line is connected to the air supply control valve 35 of the fluid control device 9 and the water supply control
Pinch valves such as a control valve 36, a suction control valve 37, etc.
It saves the trouble of connecting to the tool 33 and the suction device, and prepares for the inspection.
As well as being relieved, the preparation time is greatly reduced. Ma
In addition, erroneous mounting of each line to the fluid control device is reduced,
Further, the conduit provided in the endoscope cover 3 is simplified.
Therefore, the endoscope cover 3 can be manufactured at low cost.
There is also an effect. Therefore, the gas sending tube 8 which is used less frequently
9 is not integrated with the air supply tube 85 but one is selectively viewed
By connecting to the mirror cover 3, the air supply tube
Since the pipe volume of the valve 85 becomes smaller,
Good response at start, gas supply tube 89 and air supply
As in the case where the tube 85 is provided integrally,
Air in the gas supply tube compressed by atmospheric pressure is sent
Air supply because there is no problem of expansion when operation stops
The response of the stop of the air is good, and the air supply tube 85 and
And the gas supply tube 89 is simplified, so
Can be Further, in the pipe system shown in FIG.
6 and the air supply line 81, the water supply line 82, and the suction line 83.
Air tube 85, water supply tube 86 and suction tube 8
7 and the configuration of the water supply tank
I have. That is, as shown in FIG.
Air supply line 81, water supply line 82 and suction line extending from
83 is connected to the cover-side connector 95 to form an integral part.
ing. Then, an air pipe is provided inside the cover-side connector 95.
Communication with the channel 81, the water supply line 82 and the suction line 83
As a result, a protrusion 98 is formed to protrude toward the distal end. on the other hand,
Air supply tube 85, water supply tube 86, and suction tube
The end of 87 is connected to the tube-side connector 96 and
Air is supplied to this tube side connector 96.
Tube 85, water supply tube 86, and suction tube 87
Openings 97 are provided to communicate with the
Of the tube-side connector 96
Cover 95 and the tube
It is detachably connected to and fixed to the side connector 96.
ing. The tube side connector 96 and the cover side
The connector 95 has an alignment finger to prevent incorrect connection.
Mark 99 is provided, and these indicators are combined at the time of inspection.
In addition, the cover side connector 95 and the tube side connector 96
Is connected, the air supply line 81 is connected to the air supply tube 85,
The water supply pipe 82 has a water supply tube 86 and the suction pipe 83 has a suction pipe.
It can communicate with the pulling tube 87 securely.
ing. At the end of the inspection, the connector 95 on the cover side
Disconnect the tube connector 96 and discard the endoscope cover 3
I do. In addition, as shown in FIG.
One end of the junction 42 and one end of the water supply tube 86 are connected to the flexible container 1.
Sterile water pack 1 filled with sterile water 102 inside 01
03, the air supply tube 85 and the water supply tube.
The valve 86 is formed integrally with the sterilized water pack 103.
You. In addition, the flexible container 101, the water supply tube 85, and the branch
A valve element 1 having an opening / closing cock 104 at the connection with the passage 42
05 is provided to rotate the open / close cock 104
As a result, the sterilized water pack 103, the air supply tube 85 and
The flow path with the water supply tube 86 can be opened and closed.
I have. When storing or transporting the sterilized water pack 103 before inspection
Is closed by closing the flow path.
Water 1 to the air supply tube 85 and the water supply tube 86
02 is prevented. Thus, the fluid conduit on the endoscope cover side is
Connect the fluid lines on the fluid device side to the
The air supply line and air supply
Water and suction lines, air supply tubes, water supply tubes and
Eliminates the need to connect one suction tube to each
Pre-test preparation is simplified and preparation time is reduced.
Can be Further, the sterilized water pack is supplied with an air supply tube and a supply tube.
Since they were formed integrally with the water tube, they were connected before inspection.
This eliminates the need for continuous operation and makes the water
It is safe because it will not be lost. By the way, the endoscope cover and the endoscope for the cover
When attaching and detaching the cover
The convex part provided on the inner circumference fits into the concave part provided on the endoscope for cover.
The cover has a large diameter.
And the fixing accuracy was low. Also,
Various pipes are installed in the endoscope cover without being fixed.
Insert the cover endoscope into the endoscope cover
At the time, each conduit is entangled with the endoscope
Was damaged. Therefore, endoscope camera
The above problem can be solved by configuring the bar as follows.
Can be eliminated. As shown in FIG. 20, a cover endoscope 201 is provided.
At the distal end of the insertion portion, a distal rigid portion 203 is provided.
The distal end hard portion 203 has the tip of the endoscope cover 202.
The stopper 205 provided on the end cover 204 is fitted.
Groove 208 is formed as described above. Tip cover 20
4 has a stopper 205 which slides in the outer circumferential direction.
The stopper 206 can be moved freely.
Protrudes toward the inner peripheral surface of the end cover and is provided at the distal end hard portion 203
To prevent axial displacement due to the
It has become so. The stopper 205 has a sheath
The sheath 208 is covered with a stopper
Water-tight to the tip cover 204 on the tip side than
Is attached. The sheet covering this stopper 205
Stopper 205 is pressed in the inner circumference direction on the outer circumference of thread 208
An elastic rubber band 209 is provided. The stopper 205 and the sheath 20
8 and the elastic rubber band 209
205 is slidably adhered. Also the tip
The hard portion 203 has a notch 2 on the tip side from the groove 207.
10 are provided, and the notch 210
And an inclined portion 211 rising toward 07.
You. Further, as shown in FIG.
08, water supply pipeline 213, channel 214, air supply
Pipes 215 are provided, and these pipes are kept close at hand.
Covered by a protective tube 216
You. However, on the distal end side, as shown in FIG.
The path is formed by processing each pipe line in terms of processing and strength of the tip cover 204.
Because it cannot be in close contact,
Installed, but with some clearance
Is arranged. Therefore, the protective tube 2
16 so that the cutting portion 2
17 and the protective tube 216 is spread and attached.
You. As a result, the end and the tip of the protection tube 216
The end face of the cover 204 is inserted through the endoscope 201 for cover.
It is glued by striking the end so that there is no step on the road side
ing. The operation of the cover-type endoscope constructed as described above
Will be explained. As shown in FIG.
1 is attached to the endoscope cover 202,
Immediately before the end rigid portion 203 is attached to the tip cover portion 204
Is the outermost stopper 205 by the inclined portion 211.
It moves in the circumferential direction and is lifted high.
Here, when the distal end hard portion 203 is further pushed into the distal end side,
The stopper 205 falls into the groove 207, and as shown in FIG.
Locked as shown. Note that the distal end hard portion 203 and the distal end cover portion 2
When releasing the lock with the 04, as shown in FIG.
Remove the band 209 from the outer periphery of the tip cover 204 and turn
Then, put a finger on the elastic band 209 and pull in the direction of the arrow.
By raising, the strike adhered to the sheath 208
The upper part 205 has the same shape as that of FIG.
Detached from the groove 207, the distal end hard portion 203 is
04 can be removed. As described above, the distal end hard portion is attached to the distal end cover portion.
It can be easily installed simply by inserting it and pushing it in at the end.
When removing, just remove the elastic band and pull
It is easy to attach and detach. In addition, the protection tube
There is no step between the road side and the tip cover.
This makes it easy to introduce the hard tip into the tip cover.
The detachability is further improved. Further, as shown in FIG.
204 is fitted with a distal hard portion 203 fitted therein.
In this way, the structure of the tip can be simplified.
In this case, the inner peripheral surface of the distal end cover portion 204 has a tapered portion 2
21 is formed, and the protrusion 218 is formed on the protrusion 218.
An elastic member 219 is provided in opposition. And the tip hardness
The groove portion 220 is provided at a position corresponding to the protrusion 218 in the quality portion 203.
Is formed. In the inner circumference of the front end cover portion 204,
The elastic member 219 and the protrusion 218 are provided to face each other.
A flat portion 222 is formed on the side surface of the portion.
22 also has a flat side surface so that it fits with
Is formed. Therefore, the distal end hard portion 203 is moved toward the distal end.
The groove 220 of the distal end hard portion 203
The front end portion of the protrusion is the protrusion 218 of the front cover portion 204.
It is pushed up along the paper portion 221. At this time, elasticity
The member 219 is crushed as shown in FIG.
Here, when the distal end hard portion 203 is pushed in,
As shown, the protrusion 218 is dropped into the groove 220 and is fixed.
Is determined. In addition, when removing, the tip cover 204
The protrusion 218 is shifted from the groove 220 of the hard distal end 203.
And pull the hard tip 203 in the axial direction to remove it.
Good. Also, as shown in FIG.
Is attached directly to the outer periphery of the stopper 205, and the sheath 208
Of the front end cover portion 204 on the rear end side of the elastic band 209
By attaching to the outer periphery, the elastic
Since it is not necessary to install the cable 209, the diameter can be reduced.
You. In this case, the elastic band 209 is
Water-tight so that the stopper 205 can slide freely around
It is attached to the tip cover 204. For this reason, when removing in the same manner as in FIG.
Is to pull up the elastic band 209 and cover the tip end cover 2
04 to break the elastic band 209
And remove the distal end hard portion 203 from the distal end cover portion 20.
4 can be removed axially. [0074] As described above, according to the present invention, the processing
The configuration of the pipe for inserting the fixture is simple, and the bending of the endoscope for the cover
The treatment tool does not bend even when bending due to
Cover type with good and economical endoscope cover
An endoscope can be provided.

BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 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 an endoscope cover and an endoscope for a cover inserted through the endoscope cover. FIG. 4 is a sectional view showing a schematic configuration of a cover type endoscope. FIG. 5 is a sectional view showing a relationship between a lens cover and a nozzle of the cover type endoscope. FIG. 6 is a cover type endoscope. FIG. 7 is a sectional view showing a curved state of a mirror. FIG. 7 is a view showing an application example of a channel tube. FIG. 8 and FIG. 9 are related to a modification of the first embodiment, and FIG. FIG. 9 is a cross-sectional view of an outer fitting portion of a channel tube. FIG. 10 is a cross-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 portion. FIG. 12 to FIG. 15 relate to a method of attaching an endoscope for a cover to an endoscope cover. FIG. 12 is a diagram schematically showing an endoscope for a cover. FIG. 13 is an explanatory view showing air supply and exhaust of the cover endoscope. FIG. 14 is 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 view showing a connection state of various channel tubes. FIG. 17 is provided with a gas supply tube. FIG. 18 is a view showing a connection part of each channel tube. FIG. 19 is a view showing a sterilized water pack. FIG. 20 is a cross-sectional view showing a schematic configuration of a locking part of a cover type endoscope. 21 is a front cross-sectional view of FIG. 20. FIG. 22 is a cross-sectional view showing a state where a stopper is about to be locked in a groove. FIG. 23 is a view showing a state where a cover endoscope is removed from an endoscope cover. FIG. 25 is a cross-sectional view showing a schematic configuration of another example of the locking portion of the cover type endoscope. FIG. 26 is a cross-sectional view showing a state immediately before the locking. FIG. 26 is a cross-sectional view showing a schematic configuration showing another example of the locking portion of the cover-type endoscope. Endoscope cover 4 Endoscope 52 for cover Channel tube 54 Luminal member

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-193023 (JP, A) JP-A-1-310637 (JP, A) JP-A-5-95892 (JP, A) JP-A-5-95892 253177 (JP, A) Fully open sho 63-1502 (JP, U) Real open sho 57-7503 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00-1 / 32

Claims (1)

(57) Claims 1. An endoscope for a cover, an endoscope insertion portion for inserting the endoscope for the cover, and an endoscope insertion portion arranged in parallel with the endoscope insertion portion , A cover-type endoscope combined with an endoscope cover having a treatment tool insertion pipe made of tetrafluoroethylene, for a cover attached to the endoscope cover of the treatment tool insertion pipe in the endoscope cover. The part corresponding to the bending part of the endoscope
Lumen member or net made of porous tetrafluoroethylene only
A cover-type endoscope comprising a tube .