JPH07155284A - Cover for endoscope with channel - Google Patents

Abstract

PURPOSE:To connect easily and surely a standing-up wire end with an operating part, to stabilize standing-up and laying down operation after connection and to form compactly a handling part of the operating part. CONSTITUTION:When a cover is mounted, an endoscope inserting part 12 of an endoscope 4 for the cover is inserted into an endoscope inserting channel 50 and when a mouth body part 33 is fixed on an operating part 13, a wire tube is positioned and fixed by a fixing part 65 of the mouth body part 33 even if it has a freedom of moving a little at the inserting part. In addition, the terminal of a standing wire 48 extending from the end part is passed through a passage hole 69 even if a user is especially aware of it or does not take much time. In addition, when it is correctly positioned and fixed, it is possible to perform stably operations for standing-up and laying-down after connecting the wire without excess loading.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope cover with a channel which has at least one channel including a treatment tool channel through which a treatment tool such as forceps is inserted and which covers an insertion portion of the endoscope.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical field and the like. When an endoscope used in the medical field is inserted into a living body, the observation window provided at the distal end portion of the insertion portion may not be sufficiently observed due to adhesion of body fluid or the like. For this reason, the endoscope is provided with an air supply conduit or a water supply conduit so that the observation window can be sprayed with a fluid such as a cleaning liquid or a cleaning gas to remove the body fluid or the like adhering to the observation window by the operation on the near side. Has been. Further, there is also a device provided with a suction pipe line for sucking and discharging unnecessary body fluid and the like. In addition, there is one in which a treatment instrument channel is provided so that a tissue can be collected with a biopsy forceps or a treatment treatment with a treatment instrument can be performed.

For endoscopic examination, it is necessary to use a clean endoscope that has been thoroughly washed and disinfected before the examination.

Therefore, in the case of an endoscope provided with a conduit such as the air supply conduit or a treatment instrument channel, when it is used for a patient or the like, cleaning or sterilization treatment must be performed in order to reliably prevent infections and the like. Is given. However, it takes time to completely perform cleaning or sterilization, and thus there is a problem in that the use efficiency of the endoscope is reduced.

Therefore, by using the endoscope itself in a state of being covered with the endoscope cover provided with the air / water supply conduit, etc., only the endoscope cover is replaced as a disposable after use, and after use. In particular, there has been proposed an endoscope cover type endoscope which does not require cleaning or sterilization so as not to make the endoscope itself dirty.

Conventionally, as a channel-equipped endoscope cover having a treatment tool channel through which a treatment tool such as forceps is inserted, as shown in FIG. 16, a treatment tool raising base 46 is provided at the tip of the insertion portion cover portion 18, One end of the raising wire 48 for driving it is attached to the raising base, and the other end is a wire which is a conduit for guiding the raising wire 48 from the operating portion fixing mouth portion 33 as shown in FIG. Some extend with tube 49. This wire tube 49
Has one end attached to a part of the tip of the insertion portion cover portion 18, but the other portions are not fixed and extend from the mouth portion 33.

With such a construction, the structure of the mouth portion 33 can be simplified, and since the wire tube 49 is not fixed by adhesion or the like except the tip, the assembling cost can be reduced. After mounting the insertion portion cover portion 18 on the cover endoscope, the end portions of the raising wire 48 and the wire tube 49 are connected to a part of the raising operation portion of the cover endoscope operating portion ( The wire tube end is attached to a part of the operating part.) The operating part allows the raising stand at the tip of the cover to be raised and inverted.

[0008]

However, in the case of such a structure, the wire tube 4 is formed in the mouth portion 33.
Since 9 is not positioned and fixed, the insertion portion cover portion 1
After attaching 8 to the cover endoscope, there is a problem that it takes time and effort to connect the wire tube end and the rising wire end extending in arbitrary directions to predetermined positions of the endoscope operation section.

Further, if the wire tube is not positioned and fixed by the mouth portion 33, at least a part of the wire tube may be lifted up with respect to the operating portion even after the wire tube is connected to the operating portion. The part gripping part may not be compact and may be an obstacle to gripping.

Further, even after the connection, if the wire tube easily fluctuates in the vicinity of the mouth portion, the raising operation section raises the wire tube.
There is also a problem that a stable raising / reversing operation of the raising table cannot be secured even when the reversing operation is performed.

The present invention has been made in view of the above circumstances, and the connection of the raising wire end to the operating portion is easy and reliable, and the raising / lowering operation is stable even after the connection, and the operating portion is grasped. It is an object of the present invention to provide an endoscope cover with a channel that can be formed compactly.

[0012]

A channel-equipped endoscope cover of the present invention has a treatment instrument channel through which a treatment instrument is inserted, and a treatment instrument that is inserted into the treatment instrument channel and protrudes from a distal end portion is predetermined. And a treatment instrument raising tool having one end attached to the treatment instrument raising tool and the other end connected to a part of the operation portion of the cover endoscope. And a wire guide conduit for guiding the raising wire, which covers at least the inserting portion of the cover endoscope and the operating portion of the cover endoscope. Is an endoscope cover with a channel including an operation section cover section for covering the operation section cover section for fixing the operation section of the cover endoscope to the base end section of the insertion section cover section. And a mouth part for fixing the endoscope operation part When fixed to the operation portion of the cover endoscope, the wire guide conduit crawls on the operation portion of the cover endoscope or the grip portion of the operation portion cover portion to raise the wire. Positioning and fixing the wire guide conduit in a part of the mouthpiece portion for fixing the endoscope operation portion so that the wire end portion is near the predetermined connection position on the operation portion of the cover endoscope. Thus, the connection of the raising wire end to the operating portion is easy and reliable, the raising / lowering operation is stable even after the connection, and the operating portion gripping portion can be formed compactly.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 13 relate to a first embodiment of the present invention,
1 is an explanatory view showing the overall configuration of an endoscope cover type endoscope apparatus, FIG. 2 is a perspective view showing the overall configuration of the endoscope cover of FIG. 1, and FIG. 3 is the endoscope cover of FIG. FIG. 4 is a perspective view showing a state in which the endoscope is attached to the cover, FIG. 4 is a perspective view showing a configuration of a tip portion of the endoscope cover of FIG. 2, and FIG. 5 is a configuration of a tip portion of the endoscope cover of FIG. FIG. 6 is a cross-sectional view showing the mounting of the cover endoscope on the endoscope cover of FIG. 2, and FIG. 7 is a view of the mounting of the cover endoscope on the endoscope cover of FIG. 1 is an explanatory view for explaining a modified example of FIG. 1, FIG. 8 is an explanatory view for explaining a second modified example of the mounting of the cover endoscope on the endoscope cover of FIG. 2, and FIG. FIG. 10 is an explanatory view for explaining the fixation of the distal end of the endoscope and the distal end of the endoscope cover, and FIG. 10 is an explanatory view for explaining the arrangement of the raising wire and the wire tube on the insertion portion and the operation portion of FIG. 11, FIG. 11 is an explanatory view for explaining an initial setting state of the distal end constituent portion when the raising wire of FIG. 5 is connected to a part of the operation portion, and FIG. 12 is a diagram of FIG. FIG. 13 is an explanatory diagram for explaining connection and fixation of the upper wire to the connection portion of the raising knob, and FIG. 13 is an explanatory view for explaining connection and fixation of the raising wire of FIG. 5 to the connection portion of the raising knob by the workbench.

As shown in FIG. 1, an endoscope cover type endoscope apparatus 1 including an endoscope cover with a channel according to the present embodiment is an endoscope cover type endoscope (hereinafter referred to as a cover type). 2) and has a cover type endoscope 2
Is an endoscope cover with a channel (hereinafter, referred to as an endoscope cover) 3 provided with channels such as an air / water supply conduit, a suction conduit, and a treatment instrument channel, and is attached to the endoscope cover 3. And an endoscope cover endoscope (hereinafter, referred to as a cover endoscope) 4. When performing an endoscopic inspection, the insertion portion of the cover endoscope 4 and the like are covered with the clean endoscope cover 3, and the endoscope cover 3 is discarded after the inspection. The mirror 4 is characterized by being covered with a new clean endoscope cover 3 and used repeatedly. This makes it unnecessary to clean and disinfect the endoscope after the inspection.

The endoscope apparatus 1 includes the cover type endoscope 2, a cart 5 in which various peripheral devices and the like to which the cover type endoscope 2 is connected are installed, and the cover type endoscope. It has a cover holder 6 for holding the mirror 2.

The cart 5 includes, for example, a light source device 7, a video processor 8, a fluid control device 9, and an endoscope cover extender (hereinafter referred to as an endoscope cover extender used when the endoscope 4 for the cover is attached to the endoscope cover 3). , Abbreviated as dilator) 10 and the like. Further, on the upper surface of the cart 5, a monitor 11 that receives a video signal from the video processor 8 and displays an endoscopic image is placed.

The cover endoscope 4 includes an operation portion 13 which also serves as a large-diameter grip portion at the proximal end of the elongated endoscope insertion portion 12 on the proximal side.
, The universal cord 14 extends from the side portion of the operation portion 13, and the connector 15 is provided at the end portion of the universal cord 14.

The light source device 7 is detachably connected to the cover endoscope 4 via the connector 15 and supplies illumination light to the endoscope. Further, the video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 16 extending from a side portion of the connector 15, and drives an image pickup means built in the cover endoscope 4. , And the signal output from the image pickup means is converted into a standard video signal and output to the monitor 11.

An extension tube 17 is connected to the dilator 10, and the endoscope cover 3 is connected via the extension tube 17.
This is for injecting air into the interior to expand the endoscope cover 3 so that the endoscope 4 for the cover can be easily attached or removed. When attaching or detaching the endoscope cover 3 to or from the cover endoscope 4, a cover holder 6 is used. For example, the cover holder 6 holds the proximal end side of the endoscope cover 3 to cover the endoscope. The mirror 4 is inserted or removed.

The endoscope cover 3 comprises a flexible insertion section cover section 18, an operation section cover section 19 and a universal cord cover section 20 which are made of a thin and soft polymer material such as vinyl chloride. The endoscope insertion portion 12, the operation portion 13, and the universal cord 14 of the cover endoscope 4 are respectively covered.

The fluid control device 9 is provided with an air supply control valve 21, a water supply control valve 22 and a suction control valve 23, and supplies air, water,
The suction is controlled by these solenoid valves. The air supply control valve 21, the water supply control valve 22, and the suction control valve 23 are connected to an air supply pipe line 24, a water supply pipe line 25, and a suction pipe line 26 extending from the insertion section cover portion 18, respectively.

The suction control valve 23 has a suction tube 2
7 is connected, and an aspirator (not shown) is connected to the end of the endoscope 7, so that unnecessary body fluid or the like is sucked from the tip of the endoscope. A water supply tube 28 is connected to the water supply control valve 22, and a water supply tank 29 is connected to the tip portion thereof. Further, two air supply tubes 30 extend from the fluid control device 9 and are connected to the air supply control valve 21 and the water supply tank 29.

FIG. 2 shows the insertion portion cover portion 1 of the endoscope cover 3.
8 shows an overall configuration of No. 8.

The insertion portion cover portion 18 includes a cover front end constituting portion 31, a cover outer skin 32, and an endoscope operation portion 13 from the front end side.
An endoscope operation section fixing mouth body portion (hereinafter referred to as a mouth body portion) 33 for connecting and fixing is connected airtightly. The cover tip forming portion 31 has an observation opening 34.
And a channel opening 35. A transparent cover glass is provided in the observation opening 34, and the observation window and the illumination window of the endoscope inserted inside the cover face each other.
Irradiation of the illumination light toward the test site and observation of the test site can be performed.

Further, the mouth part 33 is provided with a treatment instrument insertion port 36 communicating with a treatment instrument channel provided inside.

FIG. 3 shows a state in which the endoscope cover 3 is attached to the cover endoscope 4.

The insertion portion 12 of the cover endoscope 4 is inserted into the insertion portion cover portion 18, the operation portion cover portion 19 is put on the operation portion 13 of the endoscope, and the universal cord cover portion 20 is put on the universal cord 14. After that, the fixing tape 38 is wrapped around the joints of the respective cover portions and fixed, whereby each portion of the endoscope 4 for a cover is fixed to the endoscope cover 3 (the insertion portion cover portion 18, the operation portion cover portion 19, the universal portion). The cord cover portion 20) is airtightly covered and is isolated from the external environment.

FIG. 4 shows the structure of the distal end forming portion 31 of the endoscope cover.

The tip forming portion 31 is made of a hard resin or the like, and communicates with an endoscope insertion channel provided in the insertion portion cover portion 18 so that the endoscope tip portion is fitted into the endoscope tip portion insertion hole. 41 and a channel tip 42 communicating with the treatment instrument channel are provided, and the tip of the treatment instrument channel is opened to the outside from the channel opening 35. Observation opening 34 on the side of the endoscope distal end insertion hole 41
Is provided with a cover glass 43, which allows light to pass therethrough and isolates the distal end portion of the endoscope from the external environment. The positions of the endoscope distal end portion insertion hole 41 (and the endoscope insertion channel) and the channel distal end portion 42 (and the treatment instrument channel) may have a positional relationship opposite to that in FIG.

The distal end portion of the insertion portion cover portion 18 of the endoscope cover including the distal end forming portion 31 has a structure shown in FIG. 5 when shown in a sectional view in the axial direction.

A channel tube 45 constituting a treatment instrument channel 44 is inserted into the insertion portion cover portion 18, and the tip end portion of the channel tube 45 is connected to the tip forming portion 31 and is provided in the tip forming portion 31. To the channel end portion 42. A treatment instrument raising base 46 for raising the treatment instrument inserted through the treatment instrument channel 44 is rotatably installed at the channel tip portion 42. The treatment instrument raising base 46 has a base end portion fixed by a rotation shaft 47 so that the treatment instrument raising base 46 can be rotated in the channel distal end portion 42 around the base end portion. A raising wire 48 for raising and lowering the raising base 46 by pulling is connected. This raising wire 48
Is inserted into the insertion portion cover portion 18, passes through the inside of the wire tube 49 connected to the distal end forming portion 31 at the front end portion, and extends to the endoscope operation portion fixing mouth portion 33 at the rear end side.

Further, as shown in FIG. 6, the insertion portion cover portion 18
Inside the channel tube 45 of the treatment instrument channel 44
An endoscope insertion channel 50 is provided substantially parallel to
The endoscope 4 for a cover is inserted.

The insertion portion cover portion 18 covers the bending portion of the cover endoscope 4, and up to the cover bending portion 51,
Although it is composed of one resin tube 52, the cover flexible tube portion 53 that covers the flexible tube portion of the cover endoscope 4 includes:
A resin tube 54 (which may be the same or different material as the tube 52) may be provided inside (or outside) the resin tube 52. Alternatively, a resin plate or wire may be spirally wound into a substantially tube shape. .) Is provided. By doing so, the cover curved portion is soft and easily curved, but the cover flexible tube portion is stiffer and more elastic than that, which improves usability. Furthermore, the cover flexible tube portion 53 may have triple tubes in the middle thereof, and the hardness and elasticity may be changed stepwise.

When the cover endoscope 4 is inserted into the endoscope insertion channel 50, air is blown by the air gun 55 attached to the end of the expansion tube 17 into the endoscope insertion channel 5.
If the endoscope insertion channel 50 is inserted while being inflated to 0, the insertion becomes easier.

Further, as shown in FIG. 7, an endoscope insertion hole 57 and a nozzle insertion hole 58 are provided in a rubber film 56 provided in a part of the mouth portion 33, and the endoscope insertion hole 57 covers it. While inserting the endoscope 4 for use, it is possible to insert air through the nozzle 59 attached to the tip of the expansion tube 17 through the nozzle insertion hole 58 to send air (rubber film 56).
This makes it difficult for the air inside the endoscope insertion channel to escape).

Alternatively, a channel 60 for an expansion tube is provided in a part of the cover endoscope 4, and the expansion tube 17 is inserted through the channel 60 so as to protrude from the rubber packing 61 at the tip end while supplying air. It may be inserted into the endoscope insertion channel 50.

FIG. 9 shows a method of fixing the distal end of the cover endoscope 4 and the distal end of the insert cover portion 18 after the cover endoscope 4 is inserted into the insert cover portion 18.

A part of the cover tip forming portion 31 is broken,
An elastic film 62 made of a rubber material or the like is provided there.
The tip of the cover endoscope 4 at that portion is shown in FIG.
In this case, the groove 63 is provided. In the case of FIG. 9B, the groove 6
There is no 3. Here, when the separate elastic ring 64 is fitted from above the elastic film 62 at the discontinuous portion of the cover tip forming portion 31, it fits in the groove 63 together with the elastic film 62 in FIG. 9A,
Fixed. Further, in the case of FIG. 9B, the elastic film 62 is elastically pressed by the elastic ring 64 so that the cover endoscope 4 is covered.
Apply friction to the tip of the to secure it.

Next, the layout of the insertion portion of the raising wire 48 and the wire tube 49 and the operation portion will be described with reference to FIG.

FIG. 10A is a simplified view showing the running of the raising wire 48 and the wire tube 49 when the insertion portion cover portion 18 is mounted on the cover endoscope 4.

FIG. 10 (b) is a view of FIG. 10 (a) seen from below, and FIG. 10 (c) is a cross section of the insertion portion seen from the side of the operating portion of FIG. 10 (a), FIG. 10 (d). , FIG. 10 (e) is FIG.
The cross section of the operation part 13 (mainly a grip part) seen from the back of (a) is shown.

The wire tube 49 is fixed in a part of the cover tip forming part 31, but not fixed in the insertion part, and is bonded or screwed in a fixing part 65 provided in a part of the mouth part 33. It is positioned and fixed by means such as pin fixing, press-fitting, etc., and the mouth part 3 is moved in the direction determined there.
3 extends out. Therefore, as shown in FIG.
As shown in (b), the wire tube 49 has a slight curve in the mouth. Of course, the position of the insertion portion 12 with respect to the operation portion 13 may be shifted so that the wire tube is substantially straight. Then, the extended wire tube 49 reaches the vicinity of the raising knob 66 as it is.

Further, a guide 67 for suppressing the swing of the wire tube 49 is provided in a part of the operation section 13. Examples of the material of the wire tube 49 include Teflon,
It may be a resin tube of polyethylene, polyimide, etc., a tight coil sheath, or a metal pipe such as stainless steel used in conventional scopes to increase rigidity.

For fixing the wire tubes 49 at the mouth portion, a resin tube which is relatively easy to extend in the axial direction may be almost straight (natural length) in the insertion portion, but a resin tube or a metallic coil may be used. For pipes that are difficult to stretch in the axial direction, when the insertion portion cover portion 18 is straight, the wire tube 49 is slackened in the cover so that the wire tube 49 is pushed into the cover from its natural length and fixed by the mouth portion (insertion). When the part forms a loop).

A connecting portion 68 is provided in a part of the raising knob 66, and an insertion hole 69 is provided in the connecting 68.
The end of the raising wire 48 extending from the end of the wire tube 49 is inserted into the insertion hole 69, and a part of the end can be tightened and fixed by the screw 70. The entrance of the insertion hole 69 expands in a tapered shape to facilitate insertion of the raising wire 48.

Although not shown, an angle knob for rotating around the shaft 71 is provided on the shaft 71 (raising knob 66) (on the front side of the paper surface). The finger contact portion 72 of the screw 70 is slightly outside the outer diameter of the angle knob (so that the screw can be easily rotated).

As shown in FIG. 10B, the wire tube 4
After exiting from the mouth portion 33, the vehicle 9 travels along the outer surface of the operation portion 13. (Not necessarily exactly the operation unit 1
Even if you don't reach the top, you just have to crawl very close. Of course you may arrive exactly. ) Figure 10
As shown in (c), the cover skin 32 is configured by a double lumen tube, the endoscope insertion portion 12 is inserted into the endoscope insertion channel 50, and the channel tube 45, the feeding tube 73 The air tube 74, the water supply tube 75, and the wire tube 49 (the raising wire 48 therein) are inserted. The air supply tube 74 and the water supply tube 75 may be the same as the air supply line 24 and the water supply line 25 or may be separate bodies, but the air supply tube 74
Is connected to the air supply conduit 24, and the water supply tube 75 is connected to the water supply conduit 25. Within the conduit passage insertion lumen 73, the above-mentioned tubes are not fixed, and there is some room to move.

The cover skin 32 may be a single lumen tube instead of a double lumen tube.
Also, in that case, the tubes (45, 74, 75, 4) should be set so that the tubes do not wind around the endoscope insertion part.
9) may be combined (inserted) in another tube.

The wire tube 49 inserted into the insertion portion cover portion 18 as described above is shown in FIGS.
10B, as shown in FIG. 10D, crawl on the operation portion 13 along the guide 67 so that the end of the raising wire 48 enters the insertion hole 69 of the connecting portion 68 of the raising knob 66. The direction and length of the wire tube 49 extending from the mouth 33 are positioned and fixed by a fixing portion that is a part of the mouth 33. The guide 67 may be integrated with the operation unit 13 or may be a separate body.

Further, as shown in FIG. 10E, a groove 76 may be provided on the operating portion 13, and this groove 76 may serve as the guide 67. Further, the groove 76 may be provided at the corner of the operation unit 13. Even then,
The end of the raising wire 48 is forced to the wire tube 4 on the way.
Even if 9 is not bent, the positional relationship is such that it enters the insertion hole 69 of the connecting portion 68.

As described above, FIG. 11 shows the initial setting state of the cover tip forming portion 31 when the raising wire 48 end is connected to a part of the operating portion 13.

When connecting the end of the raising wire 48 to the raising knob 66, the raising wire 48 of any cover must always be connected to the raising knob 66 in the same desired position. Therefore, for example, FIG.
(D) is an example in which the raising base 46 is restricted to the completely inverted position when the cover is shipped.

In FIG. 11A, a spacer 77 made of rubber resin, styrofoam, paper, or other plastic is provided between the treatment instrument channel 44 and the raising base 46. This spacer 77 is sufficiently larger than the raising base 46,
It is easy to insert and remove.

In FIG. 11 (b), the cover tip forming portion 31
An insertion hole 78 is provided at a part of the tip of the raising base 46 toward the raising base 46, and the raising base 46 is also provided with an insertion hole 79 having a similar diameter. When the raising base 46 is in the completely inverted position, these two holes (78, 79) are substantially coaxial with each other, and the restriction rod 80 is inserted into the insertion hole 79 at the time of shipping.

In FIG. 11 (c), the cover tip forming portion 31
A tube-type raising base 81 is attached to the. The tube type elevator 81 is provided with one or more slits 82 instead of having a rotary joint, and is small and easily bendable in the ascending direction. A ring member 83 is provided at the tip of the tube-type raising base 81, and the raising wire 48 is attached to the ring member 83.
However, they are fixed by means such as welding, adhesion, and caulking. The tube type raising base 81 may be integrated with the channel tube 45 or may be another tube. In the tube type elevator 81, since a straight tube is originally inclined by the inclined table 84, the urging force as the bending force of the tube acts on the inverted side. Therefore, even if there is no spacer or the like, the elevator is kept in the completely inverted position at the time of shipping.

In FIG. 11D, the insertion tool 85 is inserted into the treatment tool channel 44 at the time of shipment (or wire connection) and is provided so as to project from the raising base 46. The insertion tool 85 may be a resin tube, a metal tightly wound coil, or the like. Further, the insertion tool 85 may be inserted through the entire treatment instrument channel 44, or may be partway from the distal end to the middle of the treatment instrument channel 44 as long as a part thereof projects from the tip. Since this insertion tool is originally almost straight, the raising base 46 can be held in the completely inverted position in the state shown in FIG. 11 (d).

FIG. 11 (e) is an example in which the spacers 77 similar to those in FIG. 11 (a) are used to regulate the raising base 46 to the maximum raising position.

11 (a) to 11 (e), the adhesive tape may be attached to the raising base and a part of the cover tip forming portion 31 so that the raising base is restricted to a desired position. You can keep it.

FIG. 1 shows the state in which the initial settings have been made in this way.
1 (a) to FIG. 11 (d), the raising knob 66 is set in the completely inverted position, and the end of the raising wire 48 is fixed with the screw 70. In the case of FIG. 11 (e), the raising knob 66 is in the completely inverted position, and after the end of the raising wire 48 is inserted into the insertion hole 69, the raising knob 66 is moved to the maximum raising position, and there by the screw 70. The end of the raising wire 48 is clamped and fixed.
11 (a) to 11 (d), at least the inverted position of the raising knob 66 can be unified for any cover of any model, and at least the maximum raised position of any cover is unified for FIG. 11 (e). it can.

In FIG. 12, the raising wire 48 is attached to the raising knob 6
An example of the shape of the insertion portion when connecting and fixing to the connection portion 68 of No. 6 is shown.

A part of the cover holder 6 has a defined shape plate 8
6 is attached. A plurality of restriction pins 87 are provided on the defined shape plate 86. The upper part of the cover holder 6 holds a part of the mouth part 33 of the insertion part cover part 18. In the natural state, the insertion portion has a substantially straight shape shown by a broken line, but if the insertion portion is set using the regulation pin 87 as shown in the figure, it can be formed into an S shape (can be held). If the end of the raising wire 48 is connected and fixed to the connecting portion 68 in a straight state, for example, when the insertion portion has a shape as shown in FIG.
Even if 6 is not operated, the raising base 46 starts to rise,
An extra load may be applied. Therefore, as shown in FIG. 12, the insertion portion is set in a certain shape in advance, and the raising wire 48 is attached to the connection portion 68.

The prescribed shape is not limited to the S-shape as shown in FIG. 12, but may be an S-shape with a tighter (or looser) bend, a U-shape, or a J-shape (if they are always unified. Good). If it is desirable to connect in a straight state, the straightening wire 48 is provided in a straight state (as indicated by a broken line) with a regulation pin provided with a straight shape.
May be connected.

In FIG. 13, without using the cover holder 6,
An example using the workbench 88 is shown. On the work table 88, the insertion portion cover portion 18 is attached to the cover endoscope 4 and the ends of the raising wires 48 are also connected. At this time, the insertion portion is held in the prescribed shape by the prescribed shape tube 89 (straight in the figure). The opening 90 of the defined shape cylinder 89 holds the mouth 33 in an airtight manner (the channel is plugged).

The expansion tube 1 is provided in a part of the defined shape tube 89.
7 is connected, and in this case, suction is possible instead of air supply. Expansion tube 17 has a specified shape tube 89
When the air inside is sucked, the cover outer skin expands, and it becomes easy to insert the cover endoscope 4 into the insertion portion cover portion 18.

The defined shape tube 89 does not have to be a straight shape as shown in the figure, but may have a desired defined shape such as an S shape.

As described above, in the channel-equipped endoscope cover of this embodiment, the endoscope insertion portion 12 of the cover endoscope 4 is inserted into the endoscope insertion channel 5 in FIG.
0, and when the mouth 33 is fixed to the operation unit 13,
The wire tube 49 is positioned and fixed by the fixing portion 65 of the mouth portion 33 even though there is some freedom of movement at the insertion portion, so that the end of the raising wire 48 extending from the end portion of the wire tube 49 is specially noticed by the user. It is designed to be inserted into the insertion hole 69 without any trouble or trouble.
Further, if the positioning and fixing are properly performed in this way, a stable operation can be performed even when the wires are connected to each other so as to be raised and inverted, without applying an extra load.

Further, the wire tube 49 is made compact by crawling on the operating portion 13 so that it does not interfere with gripping the operating portion 13.

In the case of FIG. 10D, the wire tube 49
The guide 67 also serves as a finger rest when the operation portion 13 is gripped. Further, in the case of FIG. 10 (e), the wire tube 49 is embedded in a part of the operation portion 13, so that it can be made more compact.

Therefore, the connection of the raising wire end to the operating portion (raising knob) is easy and reliable, and the raising / lowering operation (function) is stable even after the connection. The operating part gripping part is compact and easy to grip.

Next, the second embodiment will be described. Figure 1
FIG. 4 is an explanatory view for explaining the arrangement of the raising wire and the wire tube on the operation portion according to the second embodiment.

In this embodiment, as shown in FIG. 14, the wire tube 49 extends to the inside of the mouth portion 33, and the guide of the raising wire 48 thereafter is a guide formed integrally with the mouth portion 33. It is made by the pipe portion 91. The inner diameter of the guide pipe portion 91 becomes thicker from the middle, and there is a mounting portion 93 for attaching the raising wire 48 and the rack member 92 thereto. In the mounting portion 93, the end of the raising wire 48 is inserted into the insertion hole 9
4 and is attached by being bent into a crank shape at both outlets.

A gear portion 96 is provided on a part of the raising knob 95. When the raising knob 95 is in the completely inverted position, the gear portion 96 does not engage with the rack member 92, but the raising knob 95
The gear portion 96 engages with the rack member when the start of raising.

Since the rack member 92 has a cylindrical shape and the teeth are arranged along the circumference, the raising knob 95 can be operated no matter which direction the rack member 92 rotates about the axis. At this time, the gear portion 96 surely engages with the rack member 92.

The rack member 92 slides between the guide 97 and the raising knob 95 by operating the raising knob 95. The rack member 92 is included in the insertion portion cover portion 18 of the disposable. The guide pipe portion 91 crawls on the operation portion 13 at the operation portion grip portion. The other structure is the same as that of the first embodiment.

In the present embodiment thus constructed, a part of the mouth portion 33 serves as a guide conduit for the raising wire 48 (same as positioning and fixing), and a rack member at the end of the raising wire 48. 92 is guided between the raising knob 95 and the guide 97. Since the wire tube 49 enters the insertion portion cover portion 18, it is difficult to make the diameter thick and the material hard.

However, if a part of the mouth 33 is extended to form a wire guide conduit like the guide pipe 91,
Since the size can be made larger than that of the wire tube 49 and the material of the mouth part 33 is hard (plastic), the guide conduit on the operation part 13 can be made more rigid than the previous embodiment,
By doing so, the end of the raising wire 48 (rack member 92) can be more accurately brought to a desired position when the cover is attached.

The end of the raising wire 48 is connected to the wire tube 49.
When the clearance between the raising wire 48 and the raising wire 48 and the rigidity in the insertion portion of the wire tube 49 are weak, the raising base 46 does not move (that is, a play stroke occurs) even if the end of the raising wire 48 is slightly pushed and pulled. Cases may arise. Then, when the rack member 97 is raised (pulled) by the raising knob 95 and then inverted again, the rack member 9
At the moment when 2 moves away from the gear portion 96, it bounces backward (on the right side of the drawing) by a stroke of play, and when the raising knob 95 is started again next time, a rack member different from the previous time is used. It is possible that the first tooth of the gear portion 96 meshes with the tooth of 92 and the relationship of the rising angle between the raising knob 95 and the raising base 46 is deviated.

However, if the mounting portion 93 is provided so as to be rubbed against the inner surface of the guide pipe portion 91, the rack member 92 is always frictionally held there, and the rack is moved by the play stroke of the raising wire 48. The member 92 is prevented from bouncing and shifting when not operated. The guide pipe portion 91 also serves as a finger rest portion when gripping the operation portion 13. Further, as shown in FIG. 10 (e), the guide pipe portion 91 may be configured so as to be buried in a part of the groove of the operation portion 13, in which case the operation portion gripping portion becomes more compact. In addition, the mounting portion 93 has the guide pipe portion 9
Being within 1, the end of the raising wire 48 does not touch the user.

Therefore, by increasing the rigidity of the wire guide conduit on the operating portion gripping portion, it is possible to realize more stable connection of the wire ends and the raising / lowering operation after the connection.

Next, the third embodiment will be described. FIG. 15 is an explanatory view for explaining the arrangement of the raising wire and the wire tube on the operation portion according to the third embodiment.

In the first and second embodiments so far, after the end portions of the wire tube 49 and the raising wire 48 are connected to the operation portion, the operation portion cover portion 19 for covering the operation portion is covered from above. However, in this embodiment, the wire tube 49 is provided so as to crawl on the operation portion cover portion 19.

A mounting knob 98 is attached to the end of the raising wire 48 by a mounting portion 98 in the same construction as in FIG.

The opening 10 is provided at a part of the operation cover 19.
0 is also provided, and an insertion hole 101 is also provided in the portion of the raising knob 99 that abuts the rotating shaft.

The opening 100 and the insertion hole 101 are
A shaft 103 of a detachable angle operation unit 102 (which may be disposable, semi-disposable, or reusable) is inserted. When the shaft portion 103 is inserted into the operation portion 13, it is connected to the angle mechanism inside the operation portion 13. A ring packing 104 (such as an O-ring) around the opening 100 can keep the shaft 103 watertight with respect to the outside of the cover. The operation portion cover portion 19 is made of resin or the like, and may be soft, hard, semi-hard, or a partial combination thereof. The other structure is the same as that of the first embodiment.

In this embodiment thus constructed, when the insertion portion cover portion 18 is attached to the cover endoscope 4 and then the operation portion cover portion 19 is attached, as shown in FIG. The extended wire tube 49 crawls on the operation portion cover portion 19 to bring the raising knob 99 at the end of the raising wire 48 to a desired connection position.

Here, the shaft portion 103 of the angle operation portion 102
When the is attached to the operation unit 13 through the insertion hole 101 and the opening 100, the raising knob 99 can be rotated.

The grip portion of the operation portion cover portion 19 may be provided with something like the guide 67 of FIG. 10 on the operation portion cover portion 19. Further, as in the second embodiment, the wire tube 49 on the operation portion cover 19 may be replaced with a highly rigid one such as a guide pipe portion 91 in which a part of the mouth portion 33 extends. In any case, the portion of the wire tube 49 can also serve as a finger-holding portion when gripping the operating portion from above the operating portion cover portion 19.

Therefore, the raising knob (dispo) can be operated by directly touching the finger outside the operation portion cover portion, and thus the same raising operation feeling as that of the conventional endoscope can be obtained.

[0089]

As described above, according to the endoscope cover with a channel of the present invention, for fixing the operation section of the endoscope for fixing the operation section of the cover endoscope to the base end of the insertion section cover section. When the mouth body part is provided and the mouth body part for fixing the endoscope operation part is fixed to the operation part of the cover endoscope, the wire guide conduit causes the operation part of the cover endoscope or the operation part cover part. Crawling over the grip of the wire guide so that the raising wire end is near the predetermined connection position on the operating portion of the cover endoscope, the wire guide is provided at a part of the mouth portion for fixing the endoscope operating portion. Since the duct is positioned and fixed, the connection of the raising wire end to the operating part is easy and reliable, the raising / lowering operation is stable after connection, and the operating part gripping part can be formed compactly. There is an effect.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of an endoscope apparatus of an endoscope cover system according to a first embodiment.

FIG. 2 is a perspective view showing the overall configuration of the endoscope cover shown in FIG.

FIG. 3 is a perspective view showing a state in which the endoscope cover of FIG. 2 is attached to a cover endoscope.

FIG. 4 is a perspective view showing a configuration of a distal end portion of the endoscope cover shown in FIG.

5 is a cross-sectional view showing a configuration of a tip portion of the endoscope cover shown in FIG.

FIG. 6 is an explanatory view for explaining the mounting of the cover endoscope on the endoscope cover of FIG.

FIG. 7 is an explanatory view illustrating a first modified example of mounting the cover endoscope on the endoscope cover of FIG. 2.

FIG. 8 is an explanatory view illustrating a second modified example of mounting the cover endoscope on the endoscope cover of FIG. 2.

FIG. 9 is an explanatory view for explaining fixing of the tip of the cover endoscope of FIG. 2 and the tip of the endoscope cover.

10 is an explanatory view for explaining the arrangement of the raising wire and the wire tube of FIG. 5 on the insertion portion and the operation portion.

FIG. 11 is an explanatory diagram illustrating an initial setting state of the tip forming portion when the raising wire of FIG. 5 is connected to a part of the operation portion.

12 is an explanatory view for explaining connection and fixation of the raising wire of FIG. 5 to the connecting portion of the raising knob using the cover holder of FIG. 1.

13 is an explanatory view for explaining the connection and fixing of the raising wire of FIG. 5 to the connection portion of the raising knob by the workbench.

FIG. 14 is an explanatory view for explaining the arrangement of the raising wire and the wire tube on the operation portion according to the second embodiment.

FIG. 15 is an explanatory view for explaining the arrangement of the raising wire and the wire tube on the operation portion according to the third embodiment.

FIG. 16 is an explanatory diagram illustrating a raising wire and a wire tube according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope cover type endoscope apparatus 2 ... Cover type endoscope 3 ... Endoscope cover 4 ... Cover endoscope 12 ... Endoscope insertion part 13 ... Operation part 14 ... Universal code 18 ... Insertion Part cover part 19 ... operation part cover part 20 ... universal cord cover part 32 ... cover outer skin 33 ... mouth part 46 ... treatment instrument raising base 48 ... raising wire 49 ... wire tube 50 ... endoscope insertion channel 65 ... fixing part 66 ... Raising knob 69 ... Insertion hole

Claims (1)

[Claims] 1. A treatment instrument raising tool that has a treatment instrument channel through which a treatment instrument is inserted, and moves the treatment instrument that is inserted into the treatment instrument channel and protrudes from a distal end portion to a predetermined position, and one end thereof is the treatment instrument. A raising wire that is attached to the raising tool and drives the treatment instrument raising tool by connecting the other end to a part of the operating portion of the cover endoscope, and a wire guide tube that guides the raising wire. An endoscope cover with a channel including at least an insertion section cover section that covers the insertion section of the cover endoscope and an operation section cover section that covers the operation section of the cover endoscope. An endoscope operation part fixing mouth part for fixing the operation part of the cover endoscope to the base end part of the insertion part cover part, and the endoscope operation part fixing mouth part When the cover endoscope is fixed to the operation section, A guide conduit crawls on the operating portion of the cover endoscope or a grip portion of the operating portion cover portion, and the raising wire end portion is a predetermined portion on the operating portion of the cover endoscope. An endoscope cover with a channel, characterized in that the wire guide conduit is positioned and fixed in a part of the mouthpiece portion for fixing the endoscope operation portion so as to come close to the connection position.