JP3376106B2 - Cover-type endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to a cover for an endoscope insertion tube or the like.
So that the endoscope body is covered with a cover when used.
The present invention relates to a configured cover endoscope. [0002] 2. Description of the Related Art Conventionally, the trouble of cleaning and disinfecting an endoscope has been reduced.
Endoscope with the cover attached to the endoscope insertion tube.
A type of endoscope that performs a mirror inspection and discards the cover after the inspection
A mirror has been proposed. This type includes endoscope insertion
Clean the entire end of the irrigation tube and clean from the reusable endoscope.
Remove difficult channel channels and forceps erecting system and remove
Provided on the cover side to use it integrally with the endoscope insertion tube
There are two ways to cover a part of the insertion tube with a bar. Both
It can be called a bar endoscope. A cover type endoscope is generally an endoscope for a cover.
By inserting the insertion tube inside the soft insertion tube cover,
The endoscope insertion tube is covered by the inlet tube cover.
With the conventional one, insert the endoscope insertion tube into the insertion tube cover
When mounting the product, make sure that it is
There was a problem that could not be done. Especially insertion tube cover and insertion
When one or both tubes are bent, the friction force
Inconvenience that cover installation work cannot be easily performed
Occurs. Therefore, Japanese Patent Application Laid-Open No. 2-57228 discloses a method.
As shown, it was placed around the insertion tube cover (outer skin)
Fix one end of the overtube (insertion tube bug) and the other end
Add a weight (weight) and stretch the overtube
Means to extend the insertion tube cover through this
Proposed. In this configuration, the air inside the insertion tube cover
And expand in both the radial and axial directions.
Easily insert or remove the endoscope insertion tube.
I am able to do it. [0005] SUMMARY OF THE INVENTION As described above,
Extending the insertion tube cover like a covered endoscope
Remove the bending of the cover with and insert or remove the endoscope insertion tube.
If the friction force at the time of leaving is reduced,
Insertion tube cover is natural length (length is almost the same as endoscope insertion length)
Is extended in the longitudinal direction than that of the insertion tube cover.
When the hand of the insertion tube is connected to the hand,
Of the insertion tube is far ahead of the tip of the insertion tube.
There was a problem that the connection could not be made. This
To solve this, insert the insertion tube tip into the insertion tube cover.
Raise the insertion tube cover sufficiently until it engages
Configuration, but this is not
The question that the subordinate's hard part becomes longer and reduces operability
Let's make a point. [0006] Further, the extension of the insertion tube cover disclosed in the above-mentioned publication.
The means is attached to the cover from the insertion tube cover packing state
Not cover the insertion tube cover with the insertion tube.
It is done by attaching it in about
There was a disadvantage that the coating time was long and the coating time was long.
In addition, such extension means can be used only for the insertion tube cover.
Without inserting the endoscope for the cover to be inserted into the insertion tube cover
For the tube, measures to reduce the bending of the insertion tube
Means for releasing bending regulation and freely bending have been proposed.
did not exist. [0007] The present invention has been made in view of these circumstances.
And apply an extension force to the insertion tube cover that extends in the longitudinal direction.
When covering the insertion tube cover to the endoscope insertion tube without
Tube cover or endoscope insertion tube at least
Can reduce the frictional force due to either bending
The cover has been made easy to cover the insertion tube.
It is intended to provide a bar endoscope. [0008] SUMMARY OF THE INVENTION According to the present invention, a cover type
The endoscope is a cover endoscope having an elongated and flexible insertion tube.
And is configured to be detachable to the insertion tube of this endoscope for cover.
A cover type having an insertion tube cover for covering the insertion tube;
In an endoscope, without extending the insertion tube cover,
To facilitate insertion of the insertion tube into the insertion tube cover
Of the insertion tube coverFlexing rule that regulates and releases flexion arbitrarily
Control means. [0009] [0010] 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 shows the entire configuration of an endoscope apparatus having a cover type endoscope.
FIG. 2 shows the endoscope cover housed in a package.
FIG. 3 is a perspective view showing a state, and FIG. 3 is an insertion tube cover of an endoscope cover.
Cross section showing the state in which the endoscope insertion tube is being inserted inside
FIG. 4 is a sectional view taken along line AA of FIG. 3, and FIG.
Sectional view showing the state where insertion of the endoscope insertion tube has been completed inside,
6 is an operation explanatory view showing a state where the insertion tube cover is bent.
is there. As shown in FIG. 1, the endoscope device 1 has a cover.
-Type endoscope 2, light source device 4 mounted on cart 3,
Peripheral parts such as the video processor 5, the fluid control device 6, and the monitor 7
And a device. The cover type endoscope 2 can be fitted with a cover.
A cover endoscope 8 and a cover for covering the cover endoscope 8
Endoscope cover with channel (hereinafter abbreviated as cover) 9
It consists of a combination. The cover endoscope 8 is elongated.
The operation part 11 is connected to the near side of the insertion tube 10 of
A light guide or a signal
A universal cord 12 with a built-in wire extends. The cover endoscope 8 is a universal cord.
12 light source device 4 via connector 13 provided at the end
Connected to the endoscope 8 provided in the cover endoscope 8.
So that the illumination light from the light source device 4 is supplied to the light guide.
It has become. On the side of the connector 13 is the signal cable 1
4 are connected, and the signal cable 14
The bar endoscope 8 and the video processor 5 are connected, and
Image pickup (not shown) provided near the distal end of the bar endoscope 8
Signals are transmitted to and received from the element. The cover 9 includes an insertion tube cover 15 and an operation
Unit cover 16 and universal code cover 17
And an insertion tube 1 for the endoscope 8 for a cover.
0, so as to cover the operation unit 11 and the universal cord 12
Has become. When attaching the cover 9, the cover 9
The insertion tube cover 15 and the like are held by the holder 18 and inserted.
Insert the insertion tube 10 of the cover endoscope 8 into the inlet tube cover 15
To enter. The cover 9 has an insertion tube cover 15.
Operation unit cover 16 and universal
Suction tube 2 extending through cord cover 17
0, the air supply tube 21 and the water supply tube 22 are connected
I have. These suction tube 20, air supply tube 21,
The water supply tube 22 includes a plurality of water supply tubes provided in the fluid control device 6.
Is mounted on the pinch valve type solenoid valve 23. FIG. 2 shows a package 24 for packing the cover 9.
FIG. Package 24
Is a storage section 25 for storing the cover 9 and an ethylene oxide
And a lid member 26 through which the id gas can pass.
You. The insertion tube cover 1 is provided in the storage portion 25 of the package 24.
5 and operation unit cover 16 and universe folded small
A substantially straight first groove for accommodating the monkey cord cover 17
27 and a bent portion 28 in the middle of communicating with the first groove 27.
Holding, suction tube 20, air supply tube 21, water supply
And a second groove 29 for accommodating the tube 22 is formed.
You. When not in use, the cover 9 is not
And is sealed by the lid member 26
I have. Next, referring to FIG. 3 and FIG.
The detailed configuration of the bar 15 will be described. The insertion tube cover 15 is made of urethane or vinyl chloride.
Cover made of soft thin tube such as
The outer skin 30, and the tip of the cover outer skin 30.
PMMA (polymethylmeth
Tacrylate, acrylic resin), PC (polycarbonate)
G), made of hard resin such as PS (polystyrene)
The front end cover 31 is air-tightly connected and fixed. Outside cover
At the rear end of the skin 30, a hand mouth body made of hard resin or the like
The part 19 is air-tightly connected and fixed. Inside the cover outer skin 30 of the insertion tube cover 15
Is PTFE (polytetrafluoroethylene), PFA
(Tetrafluoroethylene-furfluoroalkylbi
Nyl ether), FEP (tetrafluoroethylene-
Flexible and slippery, such as xafluoropropylene copolymer)
Forceps channel 32 made of fluorine resin with good
Is provided. The forceps channel 32 includes an insertion tube cover
15, the forceps insertion port 33 of the mouth part 19
Is in communication with Also, the proximal side of the forceps channel 32
The suction tube 2 is branched into two branches in the hand opening body 19.
Also communicates with 0. That is, the forceps channel 32
To the body cavity of biopsy forceps and other endoscopic treatment tools not shown
Insertion guide hole and suction hole for air and mucus in the body cavity.
I'm sleeping. In the cover outer cover 30, the forceps channel is provided.
To the air supply tube 21 and the water supply tube 22
Air supply channel 34 and water supply channel communicating with each other
35 and an endoscope for inserting the insertion tube 10 of the cover endoscope 8
A mirror insertion space 36 is provided. The distal end cover 31 of the insertion tube cover 15 has
Can be fitted with endoscope tip 37 to fix endoscope tip 37
The fitting hole 38 is provided inside, and
The lens cover communicates with the channel 34 and the water supply channel 35.
-Equipped with a nozzle (not shown) that can wash and drain the part
ing. The insertion tube cover 15 is housed in the package 24
In this state, as shown in FIG.
A bending prevention member 39 is inserted into the screw 32. Bending prevention
The stop member 39 has a distal end that is larger than the inner diameter of the forceps channel 32.
A grip portion 40 also serving as a large diameter stopper is provided, and the other end is provided at the other end.
Is approximately the same diameter as the inner diameter of the forceps channel 32,
That can be inserted into the
An elastic portion 41 such as rubber is provided. Bending prevention part
The body of the material 39 is made of inexpensive hard plastic solid
Or a hollow rod member.
It has a slightly smaller outer diameter. The insertion tube 10 of the cover endoscope 8 is shown in the drawing.
Built-in endoscope consisting of an objective optical system and an illumination optical system
It has an elongated shape and is shown on the front of the endoscope distal end 37.
A non-objective lens and an illumination lens are provided. Ma
The insertion tube 10 is connected to the operating portion following the endoscope distal end portion 37.
Can be bent in four directions, for example, up, down, left and right by remote control
Bend 42 followed by flexible and resilient flexibility
Tube part 43, endoscope distal end part 37, bending part 42, flexible tube part
43 and a connecting portion 44 for connecting each of them.
You. The outer surface of the insertion tube 10 is
For the purpose of improving the slipperiness with the cover skin 30,
Silicone and other excellent lubricity for tic and rubber resins
Oil-impregnated plastics and oil-impregnated rubber in which oil is uniformly dispersed
It is configured using In addition, the connecting portion 44
Mix fine particles with good slipperiness such as PTFE
It is configured using a combination of them. Insert like this
By configuring the tube 10, the insertion tube 10 and the cover
To reduce the frictional force between the insertion tube 10 and the cover
There is no need to allow room between the endoscope and the endoscope insertion space
36 can be narrowed, and the outer diameter of the cover shell 30 can be reduced.
It has the effect of. Further, as shown in FIG.
A hand connecting portion 45 having a larger diameter than the insertion tube 10 is formed at the end.
An elastic member is provided on the outer peripheral portion of the hand connecting portion 45.
A fixed / hermetic seal 46 is provided. one
On the other hand, the inside of the mouth part 19 of the insertion tube cover 15 is shown in FIG.
As shown in FIG.
The formed hand fitting hole 48 is provided,
Hand mouth body 19 of bar 15 and hand end of cover endoscope 8
It can be fitted and fixed while maintaining an airtight state with the connection part 45.
It has become. Next, referring to FIG. 3 to FIG.
9 insert tube 1 of cover endoscope 8 in insert tube cover 15
0 and insert the forceps channel 32 after fixing the tip.
Pull out the bending prevention member 39 and bend the insertion tube cover 15
The procedure and operation until the function is performed will be described. The cover 9 is, as shown in FIG.
-15 is equipped with a bending prevention member 39 in the forceps channel 32.
In the state of being worn, as shown in FIG.
Packed and sterilized with ethylene oxide gas, γ-ray, etc.
After processing, it reaches the user. The user (operator or nurse, etc.) is clean
Remove cover 9 from inside package 24 with hands wearing
Cover, and fix the cover 9 to the cover holder 18 to cover it.
The insertion tube 10 of the endoscope 8 for use as shown in FIG.
-15 is inserted into the endoscope insertion space 36 and mounted.
Then, as shown in FIG.
And the endoscope distal end portion 37 are fitted and fixed.
Hand connection of the fitting hole 48 of the part 19 and the endoscope 8 for cover
Of the endoscope distal end portion 37 in front of the endoscope portion 45 by being fitted and fixed.
No objective lens and illumination lens and lens of tip cover 31
Align with the cover. In this state, the tip cover
31 through the lens cover 31 and the endoscope 8 for the body.
An endoscopic image of the cavity can be obtained, and the endoscope image is displayed on the monitor 7.
The image can be displayed for inspection. At this time, the insertion is flexible and easy to bend or meander.
In the tube cover 15, the insertion tube cover 15
The anti-bending member 39 that keeps it straight is mounted in advance.
The endoscope insertion space 36 was kept straight without meandering.
It is. Therefore, when the insertion tube is inserted, the inner surface of the cover
The frictional force with the outer surface of the insertion tube 10 is reduced, and the cover
0 with almost no stretching, as shown in FIG.
Fitting hole 38 of cover 31, endoscope tip 37, and hand
Hand fitting hole 48 of mouth 19 and hand of endoscope 8 for cover
The connecting portion 45 can be positioned or fitted or engaged,
Both ends of the insertion tube cover 15 and the insertion tube 10 can be easily fixed.
You. The insertion tube 10 is completely mounted in the insertion tube cover 15.
After that, as shown in FIG.
Holding the bending prevention member 39 with the portion 40 inside the insertion tube cover 15
Remove from And, it is fixed to the mouth part 19 at hand.
Operating unit cover 16 and universal code cover 17
And the operation unit 11 and the universal cord 12
And ready. When the cover 9 is completely attached to the endoscope 8 for cover,
In this state, the bending prevention member 39 is provided in the insertion tube cover 15.
Since there was no insertion tube, the insertion tube 10 was covered with the insertion tube cover 15.
As shown in FIG. 6, the insertion section 49 of the cover type endoscope 2
It can be freely bent and bent. In the configuration of this embodiment, the inside of the insertion tube cover 15
From the packing state to a space other than the endoscope insertion space 36
A bending prevention member 39 for reducing bending of the cover 15 is attached.
The insertion tube cover 15 is inserted into the insertion tube 10.
It is possible to reduce the labor and time during the covering operation. Also,
External pressure is applied to the package 24 when the cover is packed.
The forceps channel 32 is also
Crushing and buckling can be prevented. Also use forceps
The structure is such that the bending prevention member 39 is disposed in the channel 32.
The dedicated switch for arranging the bending prevention member.
There is no need to provide a pace, and the insertion tube cover 15 has a larger diameter.
Nothing to do. The bending prevention member 39 has a stopper at one end.
Since the holding portion 40 also serves as a
The bending prevention member 39 enters into the screw 32 and does not come off.
Can be prevented. In addition, a bullet is
And the frictional force with the inner wall of the forceps channel 32 is provided.
The bending prevention member 39 is fixed more.
In case of vibration or impact during transportation and storage or for cover
The bending prevention member 39 can easily come off even when the endoscope is mounted.
The effect of preventing the bending of the insertion tube cover 15 stably
Can be kept. According to the present embodiment, the insertion tube cover is attached to the endoscope.
In the process of coating the insertion tube, insert the insertion tube cover
A bending prevention member that regulates bending without extending
Since the beam is bent, the endoscope insertion tube may be
Friction can be reduced. This allows the insertion tube
Of the insertion tube cover, i.e.
Insertion of insertion tube, insertion tube cover and tip and base of insertion tube
Easy and reliable connection and fixing work with the end
Improvement can be achieved. FIGS. 7 and 8 relate to a second embodiment of the present invention.
FIG. 7 is an axial sectional view showing the configuration of the distal end portion of the insertion tube cover.
FIGS. 8A and 8B show the insertion tube cover from the package storing the cover.
FIG. 4 is an operation explanatory view showing a state where a key is taken out. The second embodiment is different from the first embodiment in that it is a front-view type.
Although the configuration example of the cover type endoscope was shown,
Is the cover used in the perspective type cover endoscope.
2 shows a configuration example. The insertion tube cover 50 of the second embodiment is flexible.
The forceps channel tube 51 composed of a tube
It is configured so as to be inserted into the section. Forceps channel chu
The notch 51 has a plurality of notches 52 on the side at the tip end.
Is formed, the tip opening is opened almost sideways, and near the tip opening.
The raising wire 53 inserted through the insertion tube cover 50 is connected.
And is inserted inside the tip cover 54.
Forming a forceps raising base 55 that allows the raised forceps and the like to be raised and inverted.
are doing. By raising / inverting from the operation unit of the endoscope, etc.
The driving force is applied to the forceps channel through the raising wire 53.
Is transmitted to the distal end of the tube 51, and the forceps raising table 55 is raised.
・ It is designed to be inverted. Inside the forceps channel tube 51,
The insertion tube cover 50 is flexible from the packing state before use.
But it is more bent than the forceps channel tube 51 or the cover
The bending prevention member 56, which is difficult to bend, is detachably stored.
Is defined. The first real part is provided at the tip of the bending prevention member 56.
As in the embodiment, a holding portion 57 also serving as a stopper is provided.
The bending prevention member 5 is provided in the forceps channel tube 51.
6 does not enter. Bending prevention member 56
Is composed of a hollow contact coil 58 made of metal or the like.
You. The anti-bending member is made of inexpensive plastic
May be used. FIG. 8 shows the cover 59 of the second embodiment.
2 shows a configuration of a package 60. Package 60 includes U
A storage groove 62 having a character-shaped portion 61 is provided. Hippo
-59 is a forceps channel tube of the insertion tube cover 50
With the bending prevention member 56 mounted inside the insertion tube 51,
With the middle of the bar 50 bent in a U-shape, the storage groove 62 is formed.
And stored in the package 60,
It can be reached at hand. Packages like this
In the configuration, the cover is compact by shortening the length direction.
Can be paid. The user can select the U-shaped package of the package 60.
The cover 59 is taken out from the groove 62. Then, as shown in FIG.
As shown, the insertion tube cover 50 of the cover 59 is
Bending prevention part housed and fixed in channel tube 51
As shown by the two-dot chain line in FIG.
From a bent state to an almost straight state as shown by the solid line
Returned to nature. Thereafter, cover is performed in the same procedure as in the first embodiment.
After covering the endoscope with the cover 59 by attaching it, the forceps
Withdrawing the bending prevention member 56 from the inside of the channel tube 51,
Perform endoscopy. In the configuration of this embodiment, the bending prevention member 56 is
Forceps whose tip is bent obliquely because of its flexibility
It can be inserted smoothly into the child channel to the deep part, side view
Also, the present invention is applicable to a cover-type endoscope of a perspective type. Also,
When using a long type cover with an insertion section length of 1 to 2 m
In addition, U-shape or vortex for compact storage in the length direction
Bent the insertion tube cover part into a roll and store it in the package
Bends the forceps channel.
And can be inserted after removal from the package
Return the tube cover straight to prevent bending
The endoscope insertion tube can be easily inserted into the cover.
Can be kept. Other functions and effects are the same as those of the first embodiment.
is there. FIGS. 9 to 11 show a third embodiment of the present invention.
FIG. 9 shows the configuration near the proximal end of the insertion tube cover.
FIG. 10 shows an endoscope insertion tube inside the insertion tube cover.
Explanatory diagram and illustration showing the state of the cover at the time of use when wearing is completed
Reference numeral 11 denotes a state in which the endoscope insertion tube is inserted into the insertion tube cover.
FIG. 8 is an operation explanatory view showing the cover in a state where bending is restricted.
You. The insertion tube cover 65 of the third embodiment has a cover.
The first and second bending restraining means for reducing bending of the
Instead of the detachable bending prevention member shown in the embodiment, a forceps
Channel, air supply channel, water supply channel or endoscope insertion
In an extra space inside the insertion tube cover 65 other than the entrance space
Is provided with a stylet (flexibility adjusting device) 66
I have. The stylet 66 is as shown in FIG.
And an elastic spiral coil having a small gap 67 between each pitch.
And a pulling wire inserted in the elastic spiral coil 68.
And an ear 69. This stylet 66
As shown in FIG. 9, the insertion tube cover 65 is
An externally operable rule placed near the hand opening 19
A control / release operation unit 70 is provided continuously. The restricting / releasing operation part 70 has a locking part on the side wall.
Of the two spiral cam grooves 71 that are engraved axially symmetrically
An empty cylindrical shell 72 and one end of the hollow cylindrical shell 72
And a cylindrical wire retractor 74 provided with a handle 73.
The wire retractor 74 has a pin 7 perpendicular to the axial direction.
5 in which the pin 75 is engaged with the cam groove 71.
It has become. The tip side of the stylet 66 is shown in FIG.
As shown, both the elastic spiral coil 68 and the pull wire 69
Are bonded and fixed to a front end cover 76. S
The proximal side of the tilet 66 is hollow with the elastic spiral coil 68.
The cylindrical shell 72 is connected and attached, and the traction wire 69 and the wire
The retractor 74 is connected and attached. The distal end cover 76 of the insertion tube cover 65
Is made of light-shielding plastic such as black,
Lens cover 77 is sealed, welded, glued or integrally molded
It is arranged in. Cover outer skin 78 of insertion tube cover 65
Is a safe and lubricating oil for living organisms such as silicon.
Including soft and uniformly dispersed urethane, vinyl chloride, etc.
It is composed of an oil elastomer and has an insertion tube 10 or forceps
Slippery with the channel outer surface is improved. In a configuration using such a cover outer cover,
Oil such as silicone oil on the inner and outer surfaces of the cover
Slip with the insertion tube of the cover endoscope
Good endoscope coverage on the cover. Also,
Due to the oil on the outer surface of the cover,
The sliding property with the inner surface of the insertion aid such as
This improves the operability of inserting the cover-type endoscope. The other parts have the same configuration as in the first embodiment.
Yes, description is omitted. Stylet 66 in insertion tube cover 65
Has a storage groove bent in a U-shape or the like as in the second embodiment.
For example, when storing and packing in a package
As shown, a gap 6 is provided between each pitch of the elastic spiral coil 68.
7 and the pull wire 69 relaxed and slightly meandered
It is in a state. In this state, the insertion tube cover 65 is bent.
It is bendable and can be stored in a package in any shape. Inserting a cover endoscope into the insertion tube cover 65
When inserting the intubation 10, the restriction / release operation unit 70
Hold the hollow cylindrical shell 72 and the handle 73 in the direction
And pull the wire in the hollow portion of the hollow cylindrical shell 72
The child 74 is moved back and forth along the cam groove 71. Then, Figure 1
As shown in FIG. 1, the pulling wire 69 of the stylet 66
The pulling force acts, the pulling wire 69 is stretched straight,
Spiral coil 68 fills gaps 67 between its pitches
Increase straightness. As a result, the rigidity of the insertion tube cover 65 itself is reduced.
And the bending of the insertion tube cover 65 is reduced and the insertion tube cover 65 is straightened.
You. Thereafter, cover is performed in the same procedure as in the first embodiment.
A cover including the insertion tube cover 65 is attached to the
Overturn. After inserting the cover into the body cavity
When operating the restricting / releasing operation unit 70, the wire retractor
By retracting 74 along the cam groove 71, FIG.
Unscrew the elastic spiral coil 68 and the pull wire 69 as shown.
To make the stylet 66 soft. This allows the insertion
The inlet pipe cover 65 can be freely bent and bent. During endoscopic examination, it is necessary to insert
By operating the regulation / release operation section 70 as necessary
Inside the cover type combining the insertion tube 10 and the insertion tube cover.
The rigidity of the insertion part of the endoscope can be adjusted to improve the insertion into the body cavity
It can also be done. In the structure of the present embodiment, the bending prevention with a long overall length is performed.
Without inserting or removing the member into the forceps channel,
The insertion tube cover can be easily closed
Bending can be regulated and released, so operation is easy.
Adjustment of the flexibility can be performed even during insertion into the body cavity. Note that the tip of the stylet 66 is fixed.
Corresponds not to the tip cover 76 but to the vicinity of the rear end of the curved portion.
It may be fixed to the insertion tube cover. Also, the cover skin is
Instead of an oil-containing elastomer in which oil is dispersed independently,
Fine materials with heat resistance and biosafety such as PTFE and ceramic
Particles mixed into base resin pellets during molding
The same effect can be obtained by using
Wear. PTFE and ceramics have high heat resistance and
Does not melt even at gin molding temperature, so it remains on the cover surface and makes contact
Slipperiness is improved because the area is reduced. FIGS. 12 to 15 show a fourth embodiment of the present invention.
FIG. 12 is provided at the base end of the insertion tube of the cover endoscope.
Side view showing the external configuration of the curved portion regulating / release mechanism,
FIG. 13 shows the internal configuration of the bending portion regulating / release mechanism of FIG.
Fig. 14 is an axial sectional view, and Fig. 14 shows a bay with a curved portion released.
Explanatory diagram and illustration showing movement of a curved portion and a curved towing wire
15 is a curved part and a bay in a state where the curved part is regulated straight.
It is an operation explanatory view showing the movement of the music towing wire. The fourth embodiment is different from the first to third embodiments.
Of the cover endoscope inserted into the cover.
This is an example in which music is reduced. The cover endoscope 80 of the fourth embodiment is inserted
A bending section regulating / releasing operation section 81 is provided at the base end of the tube.
You. As shown in FIG. 12 and FIG.
In the operation unit 81, a connecting portion is provided on the near side of the flexible tube portion 43.
The member 82 is connected, and an outer peripheral portion of the connecting member 82 is connected.
To surround the proximal end of the flexible tube 43 and the connecting member 82.
A bending preventing member 83 for preventing bending of the flexible tube portion 43 is provided.
I have. The inner side of the buckling member 83 is rotatable
A traction ring 84 is provided which slides axially at
The inside of the pull ring 84 is linked to the pull ring 84 and
A regulating plate 85 that moves in the direction is fixed. The upper half of FIG.
Moved to the flexible tube side and released without restricting the movement of the curved part
FIG. 14 is an external view of the bending portion regulating / release operation portion 81 in the case of performing
The lower half of FIG. 12 is operated by rotating the towing ring 84.
It is a figure at the time of moving to a part hand side and restricting a curved part.
FIG. 13 shows the internal configuration in the state shown in the upper half of FIG.
FIG. The traction ring 84 has a projection 86 on the inner surface.
A non-slip recess 87 is formed on the outer surface.
An operation part inner cylinder 88 is provided on the inner peripheral part near side of the traction ring 84.
It is formed continuously and is formed diagonally on the outer periphery of the operation unit inner cylinder 88.
The protrusion 86 of the traction ring 84 meshes with the cam groove 89 thus formed.
ing. The operation unit inner cylinder 88 on the rear side of the traction ring 84
A cylindrical grip 90 is provided on the outer peripheral portion. each
An airtight seal such as an O-ring
The seal 91 is fixed. The distal end of the insertion tube was fixed to the curved portion.
Four curved traction wires 92 are inserted through each curved traction wire 92.
The tow wire 92 is threaded to a position near the tow ring 84.
The topper 93 is fixed. These four curved tractions
The bending portion is raised by the wire 92 and the stopper 93 for
Can be bent at desired angles in four directions: down, left, right
The towing wire 92 can be fixed together to fix the curved part.
It has become so. The regulating plate 85 has a curved towing wire
Can pass freely, but the stopper 93 can pass
Guide hole 94 is provided, and the inside of the guide hole 94 is curved.
A tow wire 92 has been inserted. The curved traction wire 92 and the stopper 9
Fig. 3 shows the relationship between the restriction plate 85 linked to the towing ring 84
14 and FIG. FIG. 14 is shown in the upper half of FIG.
FIG. 15 shows a state corresponding to the position of
2 corresponding to the position of the traction ring 84 shown in the lower half
Each state is shown. When Covering the Cover Endoscope 80
In order to reduce the bending of the insertion tube,
Position the towing ring 84 of the release operation unit 81 in the upper half of FIG.
While rotating it along the cam groove 89 from
To the operation unit hand side to restrict the movement of the bending portion 42.
You. Then, the regulating plate 85 moves from the position of FIG. 14 to the position of FIG.
The stopper 93 of the curved towing wire 92 is
Abuts on the regulating plate 85 or pulls it in at hand
It is fixed in the state where it was put. This allows for curved towing wire
No. 92 keeps the same tension on all four even if external force is applied
Thus, the curved portion 42 does not easily bend, and is almost straight.
State can be maintained. As described above, the bending portion 42 is regulated straight.
In this state, the bending restricting means shown in the first to third embodiments is
With insertion tube cover or with bending restraint
Not having an insertion tube cover installed straight
Then, the insertion tube of the cover endoscope 80 is inserted and fixed. After the cover is completely attached, the cover is inserted into the body cavity.
When performing an endoscopy by using the
While rotating the towing ring 84 of 81 in the reverse procedure,
12 to the upper half position in FIG.
Release the movement of 42. As a result, the regulating plate 85 is
14, the bending portion 42 can be freely bent.
You. In the configuration of this embodiment, the insertion of the cover endoscope is performed.
Reducing bending by controlling the movement of the curved part of the irrigation pipe with simple means
That can be inserted into the cover
Can be. Also, it is applicable to a laparoscope as a cover type endoscope.
Intraperitoneal examination in combination with trocar
When performing insertion and extraction into the body cavity,
-Operate the release operation unit to fix the curved towing wire, and
If you try to reduce the bending of the curved part,
This can easily prevent the curved portion from being damaged. In addition, four curved tow wires are provided.
Not only for two-way curved endoscopes but only for two
Of course it is good. Further, the moving means of the regulating plate 85 is
Not limited to cam movement of ring 84 but restricted to outer surface
The plate may be exposed and slid directly, or the linear
May be moved by electric drive means such as a motor.
No. FIG. 16 shows a cover according to a fifth embodiment of the present invention.
The configuration of the bending operation unit provided in the operation unit of the endoscope
It is a sectional perspective view. The fifth embodiment has a cover similar to the fourth embodiment.
This is an example in which bending restriction means for the insertion tube is provided on the endoscope side. In the operation section of the endoscope for a cover of the fifth embodiment,
Is a curved towing wire 9 arranged as in the fourth embodiment.
Bending operation section 95 for performing bending operation by pushing and pulling 2
Is provided. The bending operation section 95 includes a bending towing wire 9.
2 is fixed to the rotating plate 96 and the rotating plate 96
A rotation shaft 97 is provided, and this rotation shaft 97 is
It is rotatably supported in a fixed bearing 98. Times
Above the rotation shaft 97, it can move up and down, and
A rotating knob 99 that rotates is connected to the body. Curvature
A fixing pin 100 is provided on the lower surface of the knob 99.
The fixing pin 100 has a bending knob 99 that is neutral.
Position (the position where the curved part is in the straight state)
The recess 98 is located above the recess 101 provided in the bearing 98.
101 can be fitted. Bay composed of these
By the music operation section 95, the bending section is fixed in a straight state,
A releasable bending portion fixing / releasing means is formed. In the normal state, the bending operation section 95 is
And the fixing pin 100 of the bending knob 99
The concave portion 101 of the bearing 98 is not fitted, and the bending knob 9
9 to pull and relax the curved towing wire 92
The bending portion can be bent freely. Insert a cover endoscope into the cover to cover
To do this, place the bending knob 99 in the neutral position
Fixed pin 100 of bending knob 99 and recess 101 of bearing 98
And push it down below the bending knob 99 to secure it.
The fixed pin 100 and the recess 101 are fitted and fixed. This state
In the above, the movement of the curved towing wire 92 is regulated,
Bending is regulated and the curved part is kept straight
You. Thereby, even if external force is applied, the curved portion does not bend,
The insertion tube of the endoscope can be smoothly inserted into the cover. Also in this embodiment, the insertion of the cover endoscope is performed.
Fourth implementation by reducing the bending of the curved portion of the irrigation pipe
The same effect as the example can be obtained. The bending portion fixing / releasing means includes friction
Use a rubbing member to fix a curved tow wire at any position
Using a free-engagement mechanism that can
The same effect can be obtained by fixing straight and then
Can be obtained. FIG. 17 shows an insertion tube according to a sixth embodiment of the present invention.
FIG. 3 is a configuration explanatory view showing a packing state of a cover. In the sixth embodiment, a bending restricting hand for the insertion tube cover is provided.
This is an example in which a packing box is used as a step. The cover including the insertion tube cover 15 is stored.
In the packing box 105, the tip cover 31 of the insertion tube cover 15 is provided.
A distal end fixing member 106 made of an elastic material for fixing the
From the elastic material that fixes the proximal opening 19 of the immigration cover 15
And a base end fixing member 107 which is
Part fixing member 106, base end fixing member 107 and packing box book
Straighten the cover skin 30 without stretching it with the body 108
Form a guide member that regulates the overall length of the cover to be fixed at a distance to keep
are doing. End of packing box 105 at base end fixing member 107 side
The part is provided with a lid member 109 which can be opened and closed. When covering the cover with the cover endoscope
Is opened by removing the fixing of the lid member 109 of the packing box 105.
Then, the opening of the mouth part 19 of the insertion tube cover 15 is exposed.
So that the insertion tube cover 15 is
Perform in the stowed state. In this state, the insertion tube cover 1
The front end cover 31 and the mouth opening 19 are respectively at the front end.
Fixed by the part fixing member 106 and the base end fixing member 107.
The cover 30 is straight without stretching
Endoscope inside the cover
Insertion tube can be inserted. Inserting a cover endoscope into the insertion tube cover 15
After inserting the irrigation tube and completing the installation,
The insertion tube cover 15 with the bar endoscope is fixed to the distal end fixing member 1.
06 and the elastic friction fixing force of the base end fixing member 107.
Pull out and perform endoscopy. In the structure of this embodiment, the first to third embodiments
As shown in the example, a forceps channel or a style
Even if no pallet is provided, the insertion tube cover can be
Insertion tube can be inserted without wrinkles or bending habits,
The mounting property of the vehicle is improved. In addition, the packing box 105 is
Protection member and cover length regulating guide member
And the insertion tube cover 15 touches the floor when installed
Will not be done,
Can be installed in a short time. FIGS. 18 and 19 show a seventh embodiment of the present invention.
FIG. 18 illustrates the configuration of the insertion tube cover in a packed state.
FIG. 19 and FIG. 19 are sectional views taken along line BB of FIG. The seventh embodiment is similar to the sixth embodiment in that the insertion tube
This is an example in which a packing box is used as a cover bending control means. The cover including the insertion tube cover 15 is housed.
The packing box 110 is slightly smaller than the outer diameter of the insertion tube cover 15.
A hard, straight circle with a large inner diameter (or width) hole
A cylindrical or rectangular outer peripheral guide member 111 and its outer periphery
Echiles fixed on the tip side and near side of the guide member 111
Section made of a flexible material that can transmit oxide gas
Materials 112 and 113. The outer peripheral guide member 111 is made of a styrene resin
Inexpensive and almost transparent plastic made of
It is constituted by a molded article of the metal. With the cover stowed
1 between the insertion tube cover 15 and the outer peripheral guide member 111
14 is an insertion tube cover 15 if it is about 0.1 to 3 mm.
Bending and meandering can be suppressed slightly, and inside the cover
The insertability of the insertion tube of the endoscope into the cover is good. When covering the cover with the cover endoscope
Is similar to the sixth embodiment in that the packing box 110 is sealed on the near side.
Remove the fixing of the member 113 and close the opening of the insertion tube cover 15.
The opening of the body part 19 is exposed, and
This is performed in a state where the insertion tube cover 15 is housed. Cover cover
After the covering operation is completed, the inside of the packing box 110 is provided with a cover endoscope.
The insertion tube cover 15 is pulled out, and an endoscope inspection is performed. The outer peripheral guide member 111 has a cylindrical or square shape.
Not only the cylindrical one, but also
Is enough. Also in this embodiment, the packing box is inserted into the cover of the insertion tube.
6th Embodiment
The same effect can be obtained. In this embodiment, the cover
Since the fixing members at the distal end and the proximal end are unnecessary, the sixth embodiment
In comparison, the packing box can be configured at a lower cost. The present invention is limited to the embodiment described above.
Instead, the tip of the insertion tube cover is open and the lens
Applicable to so-called cleaning sheath type covers without bars
Cover that does not have any channels
Of course. Further, the style as used in the third embodiment is used.
The endoscope for the cover is provided with the unit, and the endoscope for the cover is inserted.
It may be used as a means for reducing the bending of the tube. Also,
Various bending control means provided on the bar and various bending control means provided on the endoscope
Use various combinations of music control means as necessary
Of course it is good. In this case, more friction between the cover and the insertion tube
It can reduce the force and cover the insertion tube with the insertion tube.
Work (insertion of insertion tube into insertion tube cover and connection of tip
Work) can be performed easily and reliably, improving the workability of the cover coating.
Can be improved. In addition, for example, in a nuclear reactor or turbine other than for medical use.
May be applied to an industrial endoscope that performs inspection of
Except for rigid endoscopes for thoracic and abdominal cavities,
Various sensors such as ultrasonic probes whose endoscope means are not optical systems
Of course, an endoscope equipped with is also good. Various modifications are within the scope of the present invention.
It goes without saying that it is feasible. [Appendix] As described in detail above, the present invention
According to the aspect, the following configuration can be obtained.
That is, (1) An endoscope for a cover having an elongated and flexible insertion tube
And is configured to be detachable to the insertion tube of this endoscope for cover.
A cover type having an insertion tube cover for covering the insertion tube;
In an endoscope, without extending the insertion tube cover,
At least one of the insertion tube cover or the insertion tube
Bending control means for freely controlling and releasing bending
A cover type endoscope characterized by the following. (2) A camera having an elongated and flexible insertion tube
The bar endoscope and the cover endoscope insertion tube
And an insertion tube cover configured to cover the insertion tube.
In the cover type endoscope, the insertion tube cover is extended.
Without the insertion tube cover or insertion tube
At least one bending control means for restricting the bending, the said
Attach the insertion tube cover to the insertion tube of the endoscope for cover
Sometimes the bend restricting means functions, and the insertion tube is
After the insertion tube cover is completely attached, the bending restricting means is released.
A cover-type endoscope characterized in that the endoscope is configured to be removed. (3) The bending restricting means includes the insertion tube
Provided in the cover to regulate the bending of the insertion tube cover
2. The cover-type endoscope according to the above additional statement (1), wherein In this structure, the insertion tube cover is bent.
The frictional force with the endoscope insertion tube is reduced. (4) The bending restricting means includes the insertion tube
The cover is placed inside the insertion tube cover from the packing state.
The inside of the cover type according to the above supplementary note (3),
Endoscope. In this configuration, the insertion tube cover is attached to the insertion tube.
The user attaches the bending control means during the overturning process
Since no work is required, the time and effort during cover
Be reduced. (5) The bending restricting means is provided with the cover
Provided in the insertion tube of the medical endoscope to restrict the bending of the insertion tube
Cover-type endoscope according to the above supplementary note (1),
mirror. In this configuration, the insertion tube of the cover endoscope is
The frictional force with the endoscope cover due to bending is reduced. (6) The insertion tube cover is at least
One bending channel, wherein the bending restricting means is
In the channel to regulate the bending of the irrigation cover
The cover according to the above (1), which is provided so as to be insertable and fixable.
-Endoscope. (7) The bending restricting means includes the insertion tube
At least one channel other than the endoscope insertion space of the cover
Characterized in that the attachment is detachably mounted in the panel.
The cover-type endoscope according to (6). With this configuration, the outside of the insertion tube cover and the cover
There is no bending control means in the endoscope insertion space inside the bar
This is an obstacle to covering the insertion tube cover with the insertion tube.
No need to adjust the cover by touching the insertion tube cover from outside
Workability, especially for fitting and fixing work at the tip.
Up. (8) The bending restricting means includes the insertion tube
In the forceps channel that communicates with the outside at the tip of the cover
(7).
Cover type endoscope. In this configuration, the bending restricting means is a forceps channel.
The forceps channel itself is inserted and fixed in the
Buckling prevention means,
No additional space is needed to place the steps,
Bar diameter can be reduced. (9) The bending restricting means includes the forceps
An elongated bend preventing member that can be inserted into and removed from the channel.
The cover-type endoscope according to supplementary note (8). (10) The main part of the bending restricting means is
(7) The device according to the above (7), which is made of an elongated elastic material.
Cover type endoscope. (11) The bending prevention member is made of a hard material.
The rod according to the above (9), which is a real or hollow rod member.
Cover type endoscope. (12) The bending prevention member is made of a flexible material.
The supplementary note (9), which is a solid or hollow rod member.
Cover type endoscope. In this configuration, the tip of the forceps channel is
For the oblique or side-view type endoscope insertion tube cover
It can be used as a bending control means. Also, insert tube cover
For packaging that is not straight but bent
Can also be applied. (13) The bending restricting means is provided from outside.
(1) that the flexibility can be adjusted by the operation of
The cover type endoscope according to the above. (14) The bending restricting means may be
Operation to insert the insertion tube into the insertion tube cover or the insertion tube.
The above supplementary note (1) in which the tension of the passed wire can be adjusted.
A cover-type endoscope according to item 1. (15) The bending restricting means includes
The insertion tube is inserted into the tube cover, and
Before the stylet that can adjust the rigidity of the cover appropriately
The cover type endoscope according to the supplementary note (1). (16) The bending restricting means is provided with the cover
Is inserted through the insertion tube of the
A stylet that can adjust the rigidity of the insertion tube appropriately.
The cover-type endoscope according to the above supplementary note (1). Structure of this supplementary note (15) or (16)
Then, the bending restraint means must be
Not only to prevent bending, but also to cover the endoscope when inserting it into a body cavity
It can also be used as a means for adjusting the rigidity of the insertion part of the mirror.
Workability can be improved. (17) The bending restricting means includes
The insertion tube cover extends between the distal end and the proximal portion of the tube cover.
The supplementary note, which is a holding member for holding straight without performing
The cover type endoscope according to (1). (18) The holding member includes the insertion tube cap.
A device for attaching the bar to the insertion tube of the cover endoscope
The cover-type endoscope according to the above (17), which is a jig.
mirror. (19) The holding member includes the insertion tube cap.
The said also serves as a packing member for packing when transporting the bar
A cover-type endoscope according to supplementary note (17). (20) The bending restricting means includes the insertion
The insertion tube cover extends between the distal end and the proximal portion of the tube cover.
It has a holding member that holds it straight without
Full length regulation of the cover that also serves as a packing member for storing the immigration cover
The cover-type endoscope according to the above (1), which is a guide member.
mirror. In this configuration, the packaging member is directly bent.
Total cost of a cover-type endoscope that can be used as a control means
Can be cheaper. (21) The bending restricting means includes the insertion
Cover slightly larger in diameter or width than the outer diameter of the tube cover
Hard and straight cover outer periphery guide member with storage space
The cover-type endoscope according to the supplementary note (1) above. (22) The bending restricting means includes a cover
-All of the curved towing wire of the curved part provided in the endoscope
The above-mentioned attachment, which is a bending portion regulating means for pulling and releasing the
The cover-type endoscope according to the above (1). (23) The bending restricting means includes a cover
The bending operation means provided in the endoscope for
The supplementary note, which is a curved portion regulating means to be fixed in the state of
The cover type endoscope according to (1). Structure of this supplementary note (22) or (23)
Now, remove the bending section restricting means from the body cavity after endoscopy.
By using at the time of leaving, the curved rubber of the endoscope bending part and the body cavity
Damage to walls and the like can be prevented. [0130] As described above, according to the present invention, the insertion
Do not apply elongational tension to the
Occurs when the insertion tube cover is covered with the endoscope insertion tube
At least one of an insertion tube cover and an endoscope insertion tube
Can reduce frictional force due to bending
The effect that the pipe cover coating work can be performed easily
is there.

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 the entire configuration of an endoscope apparatus provided with a cover type endoscope. FIG. 2 is a perspective view showing a state in which the endoscope cover is housed in a package. FIG. FIG. 4 is a cross-sectional view showing a state in which the endoscope insertion tube is being inserted into the tube cover. FIG. 4 is a cross-sectional view taken along the line AA in FIG. 3. FIG. FIG. 6 is a sectional view showing a completed state. FIG. 6 is an operation explanatory view showing a state in which the insertion tube cover is bent. FIG. 7 and FIG. 8 relate to a second embodiment of the present invention, and FIG. FIG. 8 is an axial sectional view showing the configuration of the distal end portion. FIG. 8 is an operation explanatory view showing a state in which the insertion tube cover is taken out of a package for accommodating the cover. FIGS. 9 to 11 show a third embodiment of the present invention. FIG. 9 is an explanatory view showing the configuration near the proximal end of the insertion tube cover. FIG. 10 shows an endoscope inserted into the insertion tube cover. FIG. 11 is an operation explanatory view showing a state of the cover at the time of use in which the tube has been mounted. FIG. 11 is an operation explanatory view showing the cover in a state where bending when inserting the endoscope insertion tube into the insertion tube cover is restricted. 12 to 15 relate to a fourth embodiment of the present invention, and FIG. 12 is a side view showing an external configuration of a bending portion restricting / releasing mechanism provided at a proximal end portion of an insertion tube of a cover endoscope. 13 is an axial cross-sectional view showing the internal configuration of the bending portion restricting / releasing mechanism in FIG. 12; FIG. 14 is an operation explanatory view showing the movement of the bending portion and the bending pulling wire in a state where the bending portion is released; FIG. 16 is an operation explanatory view showing the movement of the bending portion and the bending traction wire in a state where the bending portion is regulated straight. FIG. 16 is a bending operation provided in the operation portion of the endoscope for a cover according to the fifth embodiment of the present invention. FIG. 17 is a sectional perspective view showing a configuration of a part. FIG. 18 and FIG. 19 relate to a seventh embodiment of the present invention, and FIG. 18 is a structural explanatory view showing a packing state of the insertion tube cover. Cross-sectional view taken along the line BB in FIG. 18 [Description of References] 2 ... Cover type endoscope 8 ... Endoscope for cover 9 ... Endoscope cover with channel 10 ... Insertion tube 15 ... Insertion tube cover 19 ... Part 24 package 30 cover outer cover 31 tip cover 32 forceps channel 36 endoscope insertion space 39 bending prevention member 40 gripping part 41 elastic part

Continuation of front page (56) References JP-A-2-57228 (JP, A) JP-A-5-168586 (JP, A) JP-A-6-105796 (JP, A) JP-A-6-57302 (JP) U.S. Pat. No. 6,646,202 (JP, U) U.S. Pat. No. 4,646,722 (US, A) U.S. Pat. No. 4,710,097 (US, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00

Claims (1)

(57) Claims 1. An endoscope for a cover having an elongated and flexible insertion tube, and an insertion tube detachably attached to the insertion tube of the endoscope for a cover. A cover-type endoscope having an insertion tube cover to be covered, wherein the insertion tube is not extended without extending the insertion tube cover.
The insertion tube cover is used to facilitate insertion into the insertion tube cover.
Optionally regulating the bending of the chromatography, the cover-type endoscope characterized by comprising a flexion limit means for releasing.