JPH07148104A - Endoscope - Google Patents

Abstract

PURPOSE:To provide an endoscope with a function of easily connecting a lift-up wire and a lift-up board for a treatment apparatus as well as a lift-up wire and a joint of control elements. CONSTITUTION:Without using a wire fastener, etc., a lift-up lever 50 and a liftup wire 48 are connected by putting the lift-up wire 48 through a hole 51 of the lift-up lever 50, bending an entrance side 51a and an exit side 51b of said wire 48 in the shape of U, or a crank, and forming a plastically deformed bent part 60. In short, by forming the bent part 60 of the lift-up wire 48, said wire 48 is fit in the hole 51 of an entrance side 51a through an exit side 51b and tightly connected.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has at least one channel including a treatment tool channel through which a treatment tool such as forceps is inserted, and the projection direction of the treatment tool can be remotely controlled at the tip opening of the channel. The present invention relates to a channel-equipped endoscope cover that covers an insertion portion of an endoscope including a movable treatment instrument raising base.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in industrial fields, medical fields, and the like. The endoscope used in the medical field is formed not only for the outer surface of the insertion part inserted into the living body, but also for cleaning the observation window provided at the tip of the insertion part when inserted into the living body. Body fluid, blood, and the like will also adhere to the inner surface of the water supply conduit, the air supply conduit, or the built-in conduit such as a treatment tool channel for suctioning unwanted body fluid and inserting a treatment tool. Therefore, when the endoscope once used for a patient is reused, it is necessary to sufficiently perform cleaning and disinfection in order to surely prevent infections and the like.

However, when an endoscope provided with a conduit such as the air supply conduit and a treatment instrument channel is used for a patient and the endoscope is reused for another patient, cleaning and disinfection are required. Since it takes a considerable amount of time to perform the operation sufficiently, it has been a factor that reduces the use efficiency of the endoscope.

Therefore, the endoscope itself is covered with the endoscope cover provided with the air / water supply conduit and inserted into the living body for inspection / treatment, and after completion of the inspection / treatment, the endoscope cover is removed. There has been proposed a cover-type endoscope in which, when it is discarded and reused, a new endoscope cover is covered and used for another patient instead of cleaning and sterilizing the endoscope.

That is, by disposing or replacing the endoscope cover for each case, it is not necessary to clean and disinfect the endoscope for each case, and it is possible to keep the endoscope clean at all times. Can be reused.

[0006] However, the mainstream of the cover type endoscope is a front direct view type endoscope, and an observation window is provided on the side of the distal end of the insertion portion.
When applying a side-view type endoscope with an illumination window to the cover system, the structure of the endoscope cover is different, and in particular, channels such as an air / water supply pipe line, a suction pipe line, and a treatment instrument channel are provided. In the endoscope cover with a channel, the configuration of the channel, the observation window, the illumination window, etc. was significantly different.

Particularly, in a side-view endoscope, the distal end portion of a treatment instrument such as forceps inserted in a treatment instrument channel is projected laterally so that the position of the treatment instrument is raised. A device was provided.

This treatment instrument raising device is composed of a treatment instrument raising base, a treatment instrument raising wire spare / or a treatment instrument raising lever which is a member for connecting an operating portion, and the like, and raises the raising wire to the treatment instrument raising base. When connecting to the treatment instrument raising lever, the raising wire 102 is inserted into the insertion through hole 104 provided in the treatment instrument raising base and the attachment portion 103 of the treatment instrument raising lever as shown in FIG.
And the retaining member 1 is attached to the end of the raising wire 102.
05 is fixed by adhesion, soldering, welding, or the like so that the raising wire 102 does not fall off from the treatment instrument raising lever or the attachment portion 103 of the treatment instrument raising base.

[0009]

However, when the above-described raising wire and the treatment tool raising base to which the raising wire is connected are disposable, a retaining member is bonded or soldered to both ends of the raising wire. If they are fixed by attachment or welding, the number of parts increases and the number of assembling steps increases, which increases the cost and is not suitable as a disposable member.

The present invention has been made in view of the above circumstances, and is configured by connecting the raising wire and the treatment instrument raising base and the raising wire and the operating portion connecting member with the number of parts and the number of assembling steps suitable for a disposable member. It is an object of the present invention to provide an endoscope cover with a channel including the treatment instrument raising device.

[0011]

A channel-equipped endoscope cover of the present invention has a treatment instrument channel through which a treatment instrument is inserted, and the treatment instrument which is inserted through the treatment instrument channel and protrudes from a distal end portion is located at a predetermined position. An endoscope cover with a channel for covering at least an insertion portion of an endoscope, which includes a treatment instrument raising table to be moved to a position, a treatment instrument raising wire including a treatment instrument raising wire and / or an operation portion connecting member. A treatment instrument formed by bending the operation instrument connecting member and / or the treatment instrument raising base of the treatment instrument raising device through the insertion through holes formed in the operation unit connecting member and / or the treatment instrument raising stand. They are connected by the bent portion of the raising wire.

[0012]

According to this structure, the operating portion connecting member, the treatment instrument raising wire, the treatment instrument raising base, and the treatment instrument raising wire are inserted through holes formed in the operating portion connecting member and the treatment instrument raising base. They are connected by a bent portion formed by bending a treatment tool raising wire inserted through the.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 relate to an embodiment of the present invention.
2 is an explanatory view showing the overall configuration of an endoscope cover type endoscope apparatus, FIG. 2 is a perspective view showing the schematic configuration of the entire endoscope cover,
3 is a perspective view showing a state in which the endoscope cover is attached to the cover endoscope, FIG. 4 is a perspective view showing a configuration of a tip end portion of the endoscope cover, and FIG. 5 is a tip end portion of the endoscope cover. Sectional drawing which shows a structure, FIG. 6 is explanatory drawing which shows the connection of a treatment tool raising wire and an operation part connection member, and FIG. 7 is explanatory drawing which shows a connection of a treatment tool raising wire and a treatment tool raising base.

As shown in FIG. 1, a cover type endoscope apparatus 1 is provided.
Has a cover-type endoscope 2, and the cover-type endoscope 2 has an endoscope cover 3 provided with conduits such as an air / water supply conduit, a suction conduit, and a treatment instrument channel described later. And a cover endoscope 4 attached to the endoscope cover 3.

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

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). 10 and the like are stored, and a monitor 11 for receiving an image signal from the video processor 8 and displaying an endoscopic image is placed on the upper surface of the cart 5.

The cover endoscope 4 includes an operation portion 1 which also serves as a large-diameter grip portion at the proximal end of the elongated endoscope insertion portion 12 on the proximal side.
3, 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 so as to supply 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. Also, the signal output from the image pickup means is subjected to signal processing, converted into a standard video signal and output to the monitor 11.

An expansion tube 17 is connected to the expansion device 10, and the endoscope cover 3 is connected via the expansion tube 17.
It is for sending air into the room and expanding it. By expanding the endoscope cover 3, the cover endoscope 4 can be easily attached or removed.
In addition, the endoscope cover 3 is attached to the cover endoscope 4.
Alternatively, when removing, the cover holder 6 may be used, and for example, the cover holder 6 may hold the proximal end side of the endoscope cover 3 to insert or remove the cover endoscope 4. You can do it. The endoscope cover 3 includes 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. Cage, endoscope insertion portion 12 and operation portion 1 of the endoscope 4 for cover
3, Universal cord 14 to cover 1
It is designed to be covered with 8, 19, 20.

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 for supplying air, water,
Suction control is performed by these solenoid valves.
These air supply control valve 21, water supply control valve 22, suction control valve 2
An air feeding tube 24, a water feeding tube 25, and a suction tube 26 extending from the insertion portion cover portion 18 are connected to each of the three.

The suction control valve 23 has a suction tube 2
7 is also connected, and an aspirator (not shown) connected to the end of the endoscope 7 can suck unwanted body fluid or the like from the distal end of the endoscope. Water supply control valve 22
A water supply tube 28 is also connected to the water supply tube 28, and a water supply tank 29 is connected to the tip portion thereof. Further, the two air supply tubes 30 extending from the fluid control device 9 are connected to the air supply control valve 21 and the water supply tank 29, respectively.

As shown in FIG. 2, the insertion portion cover portion 18 of the endoscope cover 3 has an endoscope for connecting and fixing the cover tip constituent portion 31, the cover outer skin 32, and the operation portion 13 of the endoscope from the tip side. Mirror operation part fixing mouth part (hereinafter abbreviated as mouth part) 33
Are hermetically connected. The cover tip forming portion 31 includes an observation opening portion 34 and a channel opening portion 3.
And 5 are provided. Further, the mouth part 33 has a treatment instrument insertion port 3 communicating with a treatment instrument channel provided therein.
6 is provided.

Next, a state in which the cover endoscope 4 is attached to the endoscope cover 3 will be described with reference to FIG. Insert the insertion portion 12 of the cover endoscope 4 into the insertion portion cover portion 18, cover the operation portion 13 of the endoscope with the operation portion cover portion 19,
After the universal cord 14 is covered with the universal cord cover 20, the fixing tape 38 is wound around and fixed to the joint between the cover portions, so that the insertion portion 12, the operation portion 13 and the universal cord of the endoscope 4 for a cover are fixed. 1
4 is airtightly covered with the insertion portion cover portion 18, the operation portion cover portion 19 and the universal cord cover portion 20 of the endoscope cover 3 so as to be isolated from the external environment.

Next, with reference to FIG. 4, the structure of the distal end forming portion 31 of the endoscope cover 3 will be described. The tip forming portion 31 shown in the figure is made of a hard resin or the like, and the tip forming portion 31
Is a distal end portion insertion hole 41 of an endoscope which is in communication with an endoscope insertion channel provided in the insertion portion cover portion and which is fitted to the distal end portion of the endoscope 4 for a cover, and a treatment instrument which is in communication with the treatment instrument channel. An insertion distal end space portion 42 and a treatment instrument insertion hole described later are provided. The treatment instrument insertion distal end space portion 42 is
The channel opening 35 opens to the outside,
The observation optical system and the illumination optical system of the cover endoscope 4 face the observation opening 34 located on the side of the endoscope distal end insertion hole 41, and the illumination light is irradiated toward the site to be examined. Further, a transparent lens cover 43 is provided for observing the site to be inspected and for isolating the distal end portion of the endoscope provided inside from the external environment.

Next, referring to FIG. 5, the endoscope cover 3 including the treatment instrument insertion distal end space portion 42 of the endoscope cover distal end constituting portion 31 and a treatment instrument channel communicating with the treatment instrument insertion distal end space portion 42. The configuration of the distal end portion of the insertion portion cover portion 18 will be described. As shown in the drawing, a channel tube 45 that constitutes a treatment instrument channel 44 is inserted through the inside of the insertion portion cover portion 18. This channel tube 45
The distal end portion of is connected to the treatment instrument insertion hole 42a of the distal end configuration portion 31 and communicates with the treatment instrument insertion distal end space portion 42 formed in the distal end configuration portion 31. In the treatment instrument insertion front end space portion 42, a treatment instrument raising device of a treatment instrument raising device that moves (raises) a treatment instrument (not shown) that is inserted through the treatment instrument channel 44 in a predetermined direction. An upper stand (hereinafter abbreviated as a rising stand) 46 is installed. The raising base 46 fixes the base end portion 46a to the rotation shaft 47 and allows the raising base 46 to pass through so that it can freely rotate within the treatment instrument insertion distal end space portion around the base end portion 46a. A treatment tool raising wire (hereinafter abbreviated as raising wire) 48 having rigidity for performing raising and lowering by raising and lowering the raising base 46 by advancing and retracting is connected to the hole 46b. The raising wire 48 is inserted through the inside of the insertion portion cover portion 18, the hand side thereof extends to the mouth portion 33, and the treatment instrument raising lever which is a member for connecting the operation portion of the treatment instrument raising device described later. (Hereinafter referred to as a raising lever). Although not shown, the treatment instrument channel 4 is provided inside the insertion portion cover portion 18.
A channel for inserting an endoscope is provided substantially parallel to the channel tube 45 of No. 4, and the endoscope 4 for a cover is inserted.

Here, the connection of the raising wire 48 will be described. First, the connection between the raising lever 50, which is a member for connecting the operating portion, and the raising wire 48 will be described with reference to FIG. As shown in (a) and (b) of the same figure, the operating portion 13 of the cover endoscope 4 is connected to the mouth portion 33 of the endoscope cover 3, and this operating portion 13 is not shown. A bending operation knob 5 for bending the bending portion of the cover endoscope.
A shaft 53 on which the two are arranged is provided. The shaft 53 having the bending operation knob 52 is inserted into the wire tube and extends to the mouth part 33. It is designed to be detachably attached via a detaching mechanism.

As shown in (c) and (d) of the figure, the raising lever 50 and the raising wire 48 are provided on the raising lever 50 without using a wire stopping member or the like. One end is inserted into the insertion through hole 51, and the insertion through hole 5
The raising wire 48, which is inserted into the first wire 1, is connected by a bent portion 60 formed by bending the inlet side portion 51a and the outlet side portion 51b at two locations in a U shape or in a crank shape and plastically deforming them. That is, by forming the bent portion 60 on the raising wire 48, the raising wire 48 is
Is an inlet side portion 51a and an outlet side portion 51b of the insertion through hole 51.
The connection is fixed according to.

Next, the connection between the raising base 46 and the raising wire 48 will be described with reference to FIG. As shown in (a) and (b) of the figure, the raising base 46 disposed at the tip of the insertion portion cover portion 18 is provided with an insertion through hole 46b, and this insertion through hole 46b is raised. The upper wire 48 is inserted, and the rising wire 48 is bent in a crank shape at both open ends of the insertion through hole 46b to form a bent portion 60 so that the rising base 46 and the rising wire 48 are the same as in FIG. Connected to.

In FIG. 6, reference numeral 54 is a tube guide portion 54 provided on a part of the outer surface of the operation portion 13 for restricting the wobbling of the wire tube 49. The structure of the tube guide portion 54 is as shown in FIG. 8 (a) has a guide groove formed in the convex portion 54a, or FIG. 8 (b).
A guide groove is directly provided on the operation portion 13 as shown in
Alternatively, as shown in (c) of the figure, a guide groove is provided at the corner of the operation portion 13. Further, as shown in (d) of the same figure, a guide groove for the wire tube 49 may be provided in a part of the operation portion cover portion 19.

When the treatment instrument is inserted into the above-mentioned treatment instrument channel tube, the treatment instrument is projected from the distal end, and the raising base 46 is rotated via the raising wire 48 to raise and invert, particularly, Since a large amount of force is applied during the raising operation (at the time of maximum raising) as compared with the inversion operation, a large load acts on the bent portion 60 of the raising wire 48 that is the connecting portion. Therefore, when comparing the connection strength between the bent portion 60 having a U shape and the crank shape, the connection strength of the bent portion 60 formed in the crank shape is that of the bent portion 60 formed in the U shape. Superior to connection strength. Therefore, when there is no problem in forming the bent portion 60 into the crank shape, the bent portion 60 is formed into the crank shape.

Further, as shown in FIG.
6, a diagonal insertion through-hole 46c is formed, and the raising wire 48 is inserted through the diagonally formed insertion through-hole 46c to form a substantially Z-shaped bent portion 60, which is then connected. It is possible to further improve the strength of the crank-shaped bent portion 60.

As described above, the connection to the raising wire is raised to the insertion hole formed in the operating portion connecting member and the raising base without using the third component such as the stopping member and the adhesive or solder. After the wire is inserted once, the raising wire is formed into a bent portion by bending two portions of the through hole for inserting the raising wire, that is, the inlet side portion and the outlet side portion, thereby forming the bending portion for the raising wire. A simple structure and reliable connection to the raising base can be achieved.

When the raising wire is connected to the operating portion connecting member or the raising base, a bent portion is formed in advance at the end of the raising wire, and the inner diameter of the insertion through hole and the raising wire are connected to each other. Use the clearance with the outer diameter so that the bent portion can be inserted into the insertion through hole, or only the portion of the raising wire located at the inlet side of the insertion through hole can be bent first. May be inserted through the insertion through hole and then the outlet side portion may be bent to form a bent portion, or a straight-shaped raising wire may be inserted through the insertion through hole to a predetermined position. After that, both the inlet side portion and the outlet side portion may be folded back.

Further, since the bent portion is not fixedly connected to the raising lever or the like with an adhesive or the like, when the raising lever is rotated, the raising wire inserted through the insertion through hole is Since the movable wire is movable with respect to the through hole, the rising wire body is less likely to be subjected to bending stress from the outside. However, if it is desired to increase the strength of the connecting portion, an adhesive may be applied to the insertion through hole to integrally fix the raising wire to the operating portion connecting member or the raising base.

Further, by forming the tube guide portion shown in FIG. 8 (a), the tube guide member can also serve as a slip stopper and a finger rest portion when gripping the operating portion. In the tube guide portion shown in FIG. 9B, the operation portion can be made flat, so that the grip feeling can be made similar to that of the conventional operation portion. The tube guide part shown in (c) of the figure can improve the cleaning performance of the operation part, and the tube guide part shown in (d) of the figure has the guide groove on the cover side. There is no need to change the shape of the part. However, in this case, at least the tube guide portion of the insertion portion cover portion needs to be formed with a strength that can withstand the advance / retreat of the wire.

The wire tube extending from the mouth part may be a wire tube connected to the tip forming part or another tube.

Now, the structure for attaching and detaching the operating portion connecting member to the shaft 53 will be described. As shown in FIG. 6B, the raising lever 50, which is a member for connecting the operating portion, has an opening 56 for attaching and detaching the shaft 53 to and from a finger contact portion 57 of the raising lever 50.
Is provided at a position substantially opposite to. This opening 56
The opening width of the shaft is formed to be slightly smaller than the outer diameter of the shaft 53 so as not to easily fall off the shaft 53. For this reason, when the raising lever 50 is attached to or detached from the shaft 53, the hinge portion 58 is curved by grasping the lever 59 and the finger contact portion 57 with a finger so that the opening width is larger than the outer diameter of the shaft 53. It is supposed to be done in a large size.

As a procedure for attaching / detaching the raising lever 50, the cover endoscope 4 is covered with the insertion portion cover portion 18, the raising lever 50 is attached to the shaft 53, and then the operation portion cover portion 19 and Universal cord cover part 20
The operation part 13 and the universal cord 14 are covered with and the inspection is performed. After the endoscopic inspection is completed, the operation part cover part 19 and the universal code cover part 20 are removed, and the raising lever 50 is also removed and discarded.

A bending operation knob cover for covering the bending operation knob 52 may be formed separately from the operation portion cover portion 19.

As another example, after the insertion section cover section 18 is attached to the endoscope 4, the operation section cover section 19 is attached to the operation section 13 and the operation section cover section 19 is raised from above. By attaching the lever 50 to the shaft 53 and then covering it with a bending operation knob cover formed separately, the raising lever 50 can be directly operated without being covered with the cover, and operability is improved. When removing the operation portion cover portion 19, the raising lever 50 is removed.

By the way, during the inspection or the treatment, when the operator operates the raising lever to raise the raising table and hold the treatment tool in a tilted state, the raising lever is raised even if the finger is removed from the raising lever. It is desirable to keep the upper angle. Therefore, the raising lever is provided with the following friction imparting means so that the treatment instrument can be held in a state of being raised by a certain angle.

As shown in FIG. 9, a groove 61 is formed around the shaft 53 of the operating portion 13 to which the raising lever 50 can be attached and detached, and the O-ring 6 is provided inside the groove 61 as a friction imparting means.
2 and a pressing member 63 are arranged. That is,
Until the raising lever 50 is attached to the shaft 53, the groove 6
A part of the pressing member 63 arranged in No. 1 is an O-ring 62.
Is projected from the outer surface 64 of the operation portion 13 by the elastic force of, and when the raising lever 50 is attached to the shaft 53, O
The elastic force of the ring 62 causes the pressing member 63 to press the raising lever 50 against the protrusion 65 formed on the shaft 53, thereby giving a sliding resistance to the rotation of the raising lever 50. That is, even if the finger is removed from the raising lever 50 during the inspection, the treatment tool can be kept raised by a certain angle due to the sliding resistance generated by the contact of the pressing member 63. Has become.

The friction imparting means is not limited to that shown in FIG. 9, but may be friction imparting means as shown in FIGS. 10 (a) to 10 (d). In FIG. 10A, a spring 66 is provided in place of the O-ring 62 of FIG. 9, and the raising lever 50 is pressed against the protrusion 65 of the shaft 53 to press the member 63 to provide sliding resistance. In FIG. 10B, the O-ring 62 is fixed to a part of the groove 61 by adhesion so that the elastic lever of the O-ring 62 directly presses the raising lever 50 against the protrusion 65 of the shaft 53. To give sliding resistance. In FIG. 10C, the O-ring 6 is attached to the raising lever 50.
2 is provided to press the raising lever 50 against the protrusion 65 of the shaft 53 to provide sliding resistance. In FIG. 10D, the shaft 5
When the O-ring 62 and the pressing member 63 are arranged inside the concave portion 67 formed in 3, and the raising lever 50 is attached to the shaft 53, the elastic force of the O-ring 62 causes the pushing member 63 to move. Sliding resistance is given to 50.
Other configurations, operations, and effects are the same as those in FIG. 9, and the same members are designated by the same reference numerals and the description thereof will be omitted.

By the way, the mechanism for attaching / detaching the raising lever 50 to / from the shaft 53 is constructed as follows, so that the raising lever 50 can be stably attached without dropping from the shaft 53.

As shown in FIGS. 11 and 12, the operation unit 13
An annular groove 71 is formed in the vicinity of the shaft 53.
A slidable guide member 72 that can slide in the groove 71 is provided inside the groove 71. A lever 72a is provided on a part of the slide type guide member 72 so that the operator can easily perform a slide (rotation) operation. Further, the sliding guide member 72 is provided with an O-ring 73 that functions as a stopper so that the sliding guide member 72 does not easily come off from the operating portion 13 and that provides sliding resistance. ing.

The raising lever 70 has an opening 56, which is slightly larger than the outer diameter of the shaft 53, in such a position that an opening 56 for attaching / detaching to / from the shaft 53 is substantially orthogonal to the finger contact portion 57 of the raising lever 70. While being formed, the convex portion 70a on the lower surface of the raising lever 70 is arranged between the shaft 53 and the slide guide member 72 as shown in FIG. Note that the annular slide-type guide member 72 is not a complete annular shape, but has a shape cut out in half as shown in FIG. 11. The other structure is the same as that of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

The operation of the attaching / detaching mechanism configured as described above will be described. In this embodiment, when the opening 56 of the raising lever 70 and the opening of the slide type guide member 72 are aligned with each other, they can be attached to and detached from the shaft 53. Therefore, after the opening 56 of the raising lever 70 is attached to the shaft 53, the raising lever 70 is rotated or the slide type guide member 72 is slid by the lever 72a. Lever 70
Of the opening 56 and the slide type guide member 72
The directions of the openings intersect with each other, and the two openings are closed so that the openings cannot be removed.

That is, the operator first of all starts the raising lever 7
The opening of the slide type guide member 72 is directed to a position where 0 can be easily attached and detached, and the opening 5 of the raising lever 70 is directed to this opening.
6 are aligned and the raising lever 70 is attached, and then the opening of the slide type guide member 72 and the opening 5 of the raising lever 70
The slide type guide member 72 may be slid so as to be displaced from the position 6.

At this time, the raising lever 70 is raised.
This is to rotate the slide-type guide member to a position where the raising lever 70 does not come off even if it is inverted. For example, in FIG.
If the current position of the raising lever 70 of 1 is the inverted position,
From the opening position of the slide type guide member 72 shown in FIG. 11, even if the raising lever 70 is raised and inverted, it does not come off from the shaft 53. Other effects and actions are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

By the way, in the above-described cover-type endoscope, the raising lever had to be attached to and detached from the shaft of the cover endoscope for each case, so that the operation was troublesome and the structure was complicated. It was expensive. Therefore, by providing the raising lever on the side of the cover endoscope, the labor of attaching and detaching the raising lever is saved, and the configuration of the raising lever is simplified.
It is possible to provide cheap things.

As shown in FIGS. 13 and 14, the raising lever 79 of this embodiment has a meshing portion 81 and is arranged on the shaft 53 of the operating portion 13, that is, on the endoscope side, and the endoscope The elevator (not shown) arranged on the cover side is connected via a rack 77 provided on the endoscope cover side.
That is, the raising wire 48 extending from the raising base arranged in the insertion portion cover portion of the endoscope cover has a columnar shape, and has a columnar shape and has a meshed portion 77b with which the meshing portion 81 meshes. Rack 7 mounting part 7 formed all around
A bent portion 60 is formed on 7a and connected.

By forming the meshed portion 77b around the entire circumference of the cylindrical rack 77, the meshed portion 77b is always meshed with the meshing portion 81 of the raising lever 79 even if the rack 77 rotates and moves in the axial direction. It is designed to be opposed to.

Further, as shown in FIG. 14, by providing a convex portion 82 on a part of the shaft 53, the rack 77 is prevented from being displaced toward the angle knob side for operating the curved portion. In order to prevent the position shift to the angle knob side without providing the convex portion 82 on the shaft 53, the end surface side of the angle knob 83 may be projected as shown by the chain double-dashed line.

Further, the guide pipe 76 may be formed integrally with the mouth part or may be provided separately. Reference numerals 80a and 80b are guide members, which guide the guide pipe 76 and the rack 77, and reference numeral 84 is a projection member which regulates the rotation range of the raising lever 79 provided in the operation portion 13. Other configurations are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

The connection between the raising lever 79 and the raising wire 48 configured as described above will be described. First, when the insertion portion cover portion 18 is completely attached to the insertion portion of the cover endoscope 4, the rack 77 and the guide pipe 76 disposed between the guide members 80a and 80b are removed as shown in FIG. It is provided so as to face the raising lever 79 in the inverted position. At this time, the engaged portion 77b of the rack 77 and the raising lever 79
The meshing portion 81 is formed so as not to mesh with the meshing portion 81.

Next, when the raising lever 79 is rotationally moved upward, the meshing portion 81 of the raising lever 79 and the rack 7 are moved.
By engaging with the engaged portion 77b of No. 7, the raising wire 48 is pulled and the raising operation is performed.

As described above, when the insertion portion cover portion is attached to the insertion portion of the cover endoscope, the meshing portion of the raising lever in the inverted position is arranged so that the meshed portion of the rack does not mesh. Therefore, even if the length of the insertion portion of the cover endoscope or the length of the insertion portion cover portion varies,
By merely changing the position of the engaged portion of the rack with respect to the raising lever, the raising / lowering operation can be always performed with the same stroke during the raising / lowering operation.

Further, when the cover-type endoscope is inserted into the living body in the state of being arranged as shown in FIG. 13, the raising wire is slightly moved so that the rack moves between the raising lever and the guide. Although it may slide, the position of the engaged portion of the rack with respect to the raising lever only changes, and the raising / lowering operation can always be performed with the same stroke during the raising / lowering operation.

Further, by providing the guide pipe, even when the rack is moved back and forth, the raising wire in the guide pipe does not bend, so that the position of the bent portion is displaced due to the bending of the raising wire. There is no.

The lift wire may have some play in the stroke due to the clearance with respect to the guide pipe, the softness of the wire tube, and the like. Stroke play is eliminated by sliding friction.

Further, since the bent portion is located at least in the guide pipe at the time of shipping, the end of the raising wire does not come into contact with the user's hand, which is safe in handling. Other effects and actions are similar to those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

Another example of the connection between the raising lever arranged on the endoscope side and the raising wire will be described with reference to FIG. In this embodiment, a pin 89 is provided instead of the engaging portion of the raising lever 85, and a plurality of through holes 87 are provided instead of the rack on the endoscope cover side. A belt 86 that is hard to bend is provided. The belt 86 and the raising wire 48 are connected by a bent portion 60, and the raising lever 85 and the belt 86 have a through hole 87 at an appropriate position formed on the belt 86 with a pin 89 provided on the raising lever 85. It is designed so that it can be inverted / raised by being inserted into and connected to.

Reference numeral 88 is a grip portion having a slip stopper. Further, the guide members 80a and 80b or the guide pipe 76 may be provided to the wire tube 49 on the operation portion as described above. The other structure is the same as that of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

The connection between the raising lever 79 and the raising wire 48 constructed as described above will be described. As shown in FIG. 7B, the raising lever 85 is arranged at the maximum raising position side, and the pin 89 provided on the raising lever 85 is fitted into the through hole 87 of the belt 86.
Then, the belt 86 and the raising wire 48 connected to the belt 86 are moved by rotating the raising lever 85.

As described above, by inserting the pins of the raising lever into the plurality of through holes provided in the belt for connection, the length of the insertion portion of the cover endoscope and the length of the insertion portion cover portion are increased. The pin of the raising lever can be inserted into the through hole for connection at an appropriate position depending on the variation in the height.

Also, since the shape of the raising lever is simple, the workability and washability are improved.

Further, in order to more firmly connect the belt and the raising wire and prevent the wire from rotating with respect to the wire, two bent portions may be provided as shown in FIG. In order to more firmly connect the belt and the raising wire at one bent portion, an adhesive is applied to the through hole for insertion and the vicinity thereof so that the raising wire and the belt are integrally fixed. Good. Other effects and actions are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

Another example of the connection between the raising lever provided on the endoscope side and the raising wire will be described with reference to FIGS. 17 to 19. In the present embodiment, as described above, without engaging the engaging portion of the raising lever with the engaged portion of the rack, or by inserting the pin of the raising lever into the through hole provided in the belt,
The raising wire is directly connected to the raising lever.

That is, as shown in FIG. 17A, the raising wire 48 extended from the raising base is inserted into the insertion hole 96 of the wire connecting portion 95 provided with the raising lever 94, and this insertion is performed. It is fixed by a screw member 97 arranged so as to be orthogonal to the hole 96. .

The inlet portion 98 of the insertion hole 96 is formed in a taper shape so that the raising wire 48 can be easily inserted. Further, the guide member 80b not only guides the guide pipe 76 but also the wire connecting portion 95 of the raising lever 94.
You may make it double as the abutting part which regulates to the upside down direction. Further, the screw member 97 has a grip 10
By causing 0 to project slightly from the maximum outer diameter line 99 of the angle knob (not shown), the rotation operation is facilitated.

As described above, since the number of parts can be reduced by directly connecting the raising wire to the raising lever with the screw member, it is possible to provide the endoscope cover which is a disposable member at a low cost. You can Other configurations, operations, and effects are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

However, when the operation in the inversion direction is started after the above-described raising lever 94 is operated to the maximum raising position, the raising wire 48 is loosened as shown in FIG. The movement of the raising base 46 may not correspond to the movement of the raising base (not shown).

For this reason, as shown in FIG. 18, the raising lever 94 is completely inverted and the raising wire 48 is inserted into the insertion hole 96 formed by being inclined by A degrees with respect to the axis line and screwed. Even in the maximum rising state, the raising wire 4
8 is directed toward the end of the wire tube 49 by an angle A, so that the slack of the raising wire 48 is eliminated.

As shown in FIG. 19, the inner diameter of the wire tube 49 formed by, for example, a close contact coil pipe, a rubber tube or a super elastic metal is close to the inlet 98 of the connecting portion 95.
By providing an elastic pipe 101 slightly thicker than the outer diameter of the elastic pipe 101 and slidably fitting the elastic pipe 101 to at least a part of the wire tube 49, the raising lever 9
Since it slides on the wire tube 49 during the rotation operation of 4, the elastic pipe 101 plays the role of a guide for the raising wire 48 when the raising lever 94 starts operating from the maximum raising to the inversion side. The slack of the wire 48 is eliminated.

[0075]

As described above, according to the present invention, the connection between the raising wire and the treatment instrument raising base and the raising wire and the operating portion connecting member is constituted by the number of parts and the number of assembling steps suitable for the disposable member. It is possible to provide an endoscope cover with a channel including a treatment instrument raising device.

[Brief description of drawings]

FIG. 1 to FIG. 7 relate to an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the overall configuration of an endoscope device of an endoscope cover system.

FIG. 2 is a perspective view showing a schematic configuration of the entire endoscope cover.

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

FIG. 4 is a perspective view showing a configuration of a distal end portion of an endoscope cover.

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

FIG. 6 is an explanatory view showing a connection between a treatment instrument raising wire and an operation portion connecting member.

FIG. 7 is an explanatory view showing the connection between the treatment instrument raising wire and the treatment instrument raising base.

FIG. 8 is an explanatory view showing a tube guide member.

FIG. 9 is a view showing a friction imparting means of a detachable operation portion connecting member.

FIG. 10 is a view showing another example of the friction imparting means of the detachable operation portion connecting member.

11 and 12 relate to another example of the attachment / detachment mechanism of the operating portion connecting member, and FIG. 11 is a plan view showing a schematic configuration of the attachment / detachment mechanism.

FIG. 12 is a cross-sectional view showing a schematic configuration of an attachment / detachment mechanism.

13 and 14 relate to a connecting means for connecting a raising lever and a raising wire provided on the endoscope side, and FIG. 13 is a plan view showing a schematic configuration of the connecting means.

FIG. 14 is a sectional view showing a schematic configuration of a connecting means.

15 and 16 relate to another example of the connecting means between the raising lever and the raising wire provided on the endoscope side.
Is a plan view showing the schematic configuration of the connecting means.

FIG. 16 is a plan view showing another example of the connection between the belt and the raising wire.

17 to 19 relate to another example of a connecting means for connecting a raising lever and a raising wire provided on the endoscope side.
7 is a plan view showing a schematic configuration of the connecting means.

FIG. 18 is a plan view showing an example of eliminating looseness of the raising wire.

FIG. 19 is a plan view showing another example of eliminating looseness of the raising wire.

FIG. 20 is an explanatory view showing a connection of a conventional raising wire.

[Explanation of symbols]

 48 ... Treatment instrument raising wire 50 ... Operation portion connecting member 60 ... Bending portion

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[Procedure amendment]

[Submission date] December 1, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction content]

[Document name] Statement

[Title of Invention] Endoscope

[Claims]

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has at least one channel including a treatment tool channel through which a treatment tool such as forceps is inserted, and the projection direction of the treatment tool can be remotely controlled at the tip opening of the channel. The present invention relates to an endoscope including a movable treatment tool raising base.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in industrial fields, medical fields, and the like. The endoscope used in the medical field is formed not only for the outer surface of the insertion part inserted in the living body, but also for cleaning the observation window provided at the tip of the insertion part when inserted into the living body. Body fluid, blood, and the like will also adhere to the inner surface of the water supply conduit, the air supply conduit, or the built-in conduit such as a treatment tool channel for sucking unnecessary body fluid and inserting a treatment tool. Therefore, when the endoscope once used for a patient is reused, it is necessary to sufficiently perform cleaning and disinfection in order to surely prevent infections and the like.

However, when an endoscope provided with a conduit such as the air supply conduit and a treatment instrument channel is used for a patient and the endoscope is reused for another patient, cleaning and disinfection are required. Since it takes a considerable amount of time to perform the operation sufficiently, it has been a factor that reduces the use efficiency of the endoscope.

Therefore, the endoscope itself is covered with the endoscope cover provided with the above-mentioned air / water supply conduit and inserted into the living body for inspection / treatment, and after the inspection / treatment is completed, the endoscope cover is removed. There has been proposed a cover-type endoscope in which, when it is discarded and reused, a new endoscope cover is covered and used for another patient instead of cleaning and sterilizing the endoscope.

That is, by disposing or replacing the endoscope cover for each case, it is not necessary to clean and disinfect the endoscope for each case, and the endoscope can be kept clean at all times. Can be reused.

[0006] However, the mainstream of the cover type endoscope is a front direct view type endoscope, and an observation window is provided on the side of the distal end of the insertion portion.
When a side-view type endoscope with an illumination window is applied to the cover system, the structure of the endoscope cover is different, and in particular, channels such as an air / water supply pipe line, a suction pipe line, and a treatment instrument channel are provided. In the endoscope cover with a channel, the configuration of the channel, the observation window, the illumination window, etc. was significantly different.

Particularly, in a side-viewing type endoscope, the distal end portion of the treatment tool such as forceps inserted in the treatment tool channel is projected laterally so that the position of the treatment tool is raised. A device was provided.

This treatment instrument raising device is constituted by a treatment instrument raising base, a treatment instrument raising wire and / or a treatment instrument raising lever which is a member for connecting an operating portion, and the like. When connecting to the treatment instrument raising lever, as shown in FIG. 20, the raising wire 102 is inserted through the insertion through hole 104 provided in the treatment instrument raising base and the attachment portion 103 of the treatment instrument raising lever. The retaining member 10 is attached to the end of the wire 102.
5 is fixed by adhesion, soldering, welding, or the like so that the raising wire 102 does not fall off from the treatment tool raising lever or the mounting portion 103 of the treatment tool raising base.

[0009]

However, if the retaining members are fixed to both ends of the raising wire by bonding, soldering, or welding as described above, the number of parts increases, and Assembling man-hours increased, causing a cost increase. In particular, in the case of a cover-type endoscope in which the treatment instrument raising base and the like are disposable, the cost reduction of the disposable endoscope cover has been a major problem.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an endoscope in which a raising wire and a treatment instrument raising base and a raising wire and an operating portion connecting member can be easily connected. I am trying.

[0011]

SUMMARY OF THE INVENTION An endoscope of the present invention is a treatment instrument raising device comprising a treatment instrument raising base, a treatment instrument raising wire, an operation portion connecting portion, and a treatment instrument raising operation portion. An endoscope including: a treatment instrument raising base and / or a treatment instrument raising wire formed by bending the treatment instrument raising wire, which is inserted through a through hole formed in the operation unit connecting portion.

[0012]

According to this structure, the operation portion connecting portion and the treatment instrument raising wire and the treatment instrument raising base and the treatment instrument raising wire are inserted into the insertion through holes formed in the operation portion connecting portion and the treatment instrument raising base. It is connected by a bent portion formed by bending the treatment instrument raising wire.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 relate to an embodiment of the present invention.
2 is an explanatory view showing the overall configuration of an endoscope cover type endoscope apparatus, FIG. 2 is a perspective view showing the schematic configuration of the entire endoscope cover,
3 is a perspective view showing a state in which the endoscope cover is attached to the cover endoscope, FIG. 4 is a perspective view showing a configuration of a tip end portion of the endoscope cover, and FIG. 5 is a tip end portion of the endoscope cover. Sectional drawing which shows a structure, FIG. 6 is explanatory drawing which shows the connection of a treatment tool raising wire and an operation part connection member, and FIG. 7 is explanatory drawing which shows a connection of a treatment tool raising wire and a treatment tool raising base. The endoscope of the present embodiment will be described as a cover endoscope.

As shown in FIG. 1, a cover type endoscope apparatus 1 is provided.
Has a cover-type endoscope 2, and the cover-type endoscope 2 has an endoscope cover 3 provided with conduits such as an air / water supply conduit, a suction conduit, and a treatment instrument channel described later. And a cover endoscope 4 attached to the endoscope cover 3.

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

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). 10 and the like are stored, and a monitor 11 for receiving an image signal from the video processor 8 and displaying an endoscopic image is placed on the upper surface of the cart 5.

The cover endoscope 4 includes an operation portion 1 which also serves as a large-diameter grip portion at the proximal end of the elongated endoscope insertion portion 12 on the proximal side.
3, 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 so as to supply 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. Also, the signal output from the image pickup means is subjected to signal processing, converted into a standard video signal and output to the monitor 11.

An expansion tube 17 is connected to the expansion device 10, and the endoscope cover 3 is connected via the expansion tube 17.
It is for sending air into the room and expanding it. By expanding the endoscope cover 3, the cover endoscope 4 can be easily attached or removed.
In addition, the endoscope cover 3 is attached to the cover endoscope 4.
Alternatively, when removing, the cover holder 6 may be used, and for example, the cover holder 6 may hold the proximal end side of the endoscope cover 3 to insert or remove the cover endoscope 4. You can do it. The endoscope cover 3 includes 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. Cage, endoscope insertion portion 12 and operation portion 1 of the endoscope 4 for cover
3, Universal cord 14 to cover 1
It is designed to be covered with 8, 19, 20.

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 for supplying air, water,
Suction control is performed by these solenoid valves.
These air supply control valve 21, water supply control valve 22, suction control valve 2
An air feeding tube 24, a water feeding tube 25, and a suction tube 26 extending from the insertion portion cover portion 18 are connected to each of the three.

The suction control valve 23 has a suction tube 2
7 is also connected, and an aspirator (not shown) connected to the end of the endoscope 7 can suck unwanted body fluid or the like from the distal end of the endoscope. Water supply control valve 22
A water supply tube 28 is also connected to the water supply tube 28, and a water supply tank 29 is connected to the tip portion thereof. Further, the two air supply tubes 30 extending from the fluid control device 9 are connected to the air supply control valve 21 and the water supply tank 29, respectively.

As shown in FIG. 2, the insertion portion cover portion 18 of the endoscope cover 3 has an endoscope for connecting and fixing the cover tip constituent portion 31, the cover outer skin 32, and the operation portion 13 of the endoscope from the tip side. Mirror operation part fixing mouth part (hereinafter abbreviated as mouth part) 33
Are hermetically connected. The cover tip forming portion 31 includes an observation opening portion 34 and a channel opening portion 3.
And 5 are provided. Further, the mouth part 33 has a treatment instrument insertion port 3 communicating with a treatment instrument channel provided therein.
6 is provided.

Next, a state in which the cover endoscope 4 is attached to the endoscope cover 3 will be described with reference to FIG. Insert the insertion portion 12 of the cover endoscope 4 into the insertion portion cover portion 18, cover the operation portion 13 of the endoscope with the operation portion cover portion 19,
After the universal cord 14 is covered with the universal cord cover 20, the fixing tape 38 is wound around and fixed to the joint between the cover portions, so that the insertion portion 12, the operation portion 13 and the universal cord of the endoscope 4 for a cover are fixed. 1
4 is airtightly covered with the insertion portion cover portion 18, the operation portion cover portion 19 and the universal cord cover portion 20 of the endoscope cover 3 so as to be isolated from the external environment.

Next, with reference to FIG. 4, the structure of the distal end forming portion 31 of the endoscope cover 3 will be described. The tip forming portion 31 shown in the figure is made of a hard resin or the like, and the tip forming portion 31
Is a distal end portion insertion hole 41 of an endoscope which is in communication with an endoscope insertion channel provided in the insertion portion cover portion and which is fitted to the distal end portion of the endoscope 4 for a cover, and a treatment instrument which is in communication with the treatment instrument channel. An insertion distal end space portion 42 and a treatment instrument insertion hole described later are provided. The treatment instrument insertion distal end space portion 42 is
The channel opening 35 opens to the outside,
The observation optical system and the illumination optical system of the cover endoscope 4 face the observation opening 34 located on the side of the endoscope distal end insertion hole 41, and the illumination light is irradiated toward the site to be examined. Further, a transparent lens cover 43 is provided for observing the site to be inspected and for isolating the distal end portion of the endoscope provided inside from the external environment.

Next, referring to FIG. 5, the endoscope cover 3 including the treatment instrument insertion distal end space portion 42 of the endoscope cover distal end constituting portion 31 and a treatment instrument channel communicating with the treatment instrument insertion distal end space portion 42. The configuration of the distal end portion of the insertion portion cover portion 18 will be described. As shown in the drawing, a channel tube 45 that constitutes a treatment instrument channel 44 is inserted through the inside of the insertion portion cover portion 18. This channel tube 45
The distal end portion of is connected to the treatment instrument insertion hole 42a of the distal end configuration portion 31 and communicates with the treatment instrument insertion distal end space portion 42 formed in the distal end configuration portion 31. In the treatment instrument insertion front end space portion 42, a treatment instrument raising device of a treatment instrument raising device that moves (raises) a treatment instrument (not shown) that is inserted through the treatment instrument channel 44 in a predetermined direction. An upper stand (hereinafter abbreviated as a rising stand) 46 is installed. The raising base 46 has a base end portion 46a and a rotation shaft 47 so that the base end portion 46a can freely rotate about the base end portion 46a in the treatment instrument insertion distal end space portion.
A treatment tool raising wire (hereinafter abbreviated as raising wire) that has a rigidity for pivoting and raising and lowering the raising base 46 by pivoting the raising base 46 by moving the raising base 46 forward and backward through the insertion through hole 46b of the raising base 46. ) 48 is connected. The raising wire 48 is inserted through the inside of the insertion portion cover portion 18, the hand side thereof extends to the mouth portion 33, and the treatment instrument raising lever which is a member for connecting the operation portion of the treatment instrument raising device described later. (Hereinafter referred to as a raising lever). Although not shown, an endoscope insertion channel is provided in the insertion portion cover portion 18 substantially in parallel with the channel tube 45 of the treatment instrument channel 44 so that the cover endoscope 4 can be inserted. It has become.

Here, the connection of the raising wire 48 will be described. First, with reference to FIG. 6, the connection between the raising wire 50 and the raising lever 50, which is the operation portion connecting member forming the operation portion connecting portion, will be described. As shown in (a) and (b) of the same figure, the operating portion 13 of the cover endoscope 4 is connected to the mouth portion 33 of the endoscope cover 3, and this operating portion 13 is not shown. A shaft 53 having a bending operation knob 52 for bending the bending portion of the cover endoscope is provided. The shaft 53 having the bending operation knob 52 is inserted into the wire tube and extends to the mouth part 33. It is designed to be detachably attached via a detaching mechanism.

As shown in (c) and (d) of the figure, the raising lever 50 and the raising wire 48 are provided on the raising lever 50 without using a wire stopping member or the like. One end is inserted into the insertion through hole 51, and the insertion through hole 5
The raising wire 48, which is inserted into the first wire 1, is connected by a bent portion 60 formed by bending the inlet side portion 51a and the outlet side portion 51b at two locations in a U shape or in a crank shape and plastically deforming them. That is, by forming the bent portion 60 on the raising wire 48, the raising wire 48 is
Is an inlet side portion 51a and an outlet side portion 51b of the insertion through hole 51.
The connection is fixed according to.

Next, the connection between the raising base 46 and the raising wire 48 will be described with reference to FIG. As shown in (a) and (b) of the figure, the raising base 46 disposed at the tip of the insertion portion cover portion 18 is provided with an insertion through hole 46b, and this insertion through hole 46b is raised. The upper wire 48 is inserted, and the rising wire 48 is bent in a crank shape at both open ends of the insertion through hole 46b to form a bent portion 60 so that the rising base 46 and the rising wire 48 are the same as in FIG. Connected to.

In FIG. 6, reference numeral 54 is a tube guide portion 54 provided on a part of the outer surface of the operation portion 13 for restricting the wobbling of the wire tube 49. The structure of the tube guide portion 54 is as shown in FIG. 8 (a) has a guide groove formed in the convex portion 54a, or FIG. 8 (b).
A guide groove is directly provided on the operation portion 13 as shown in
Alternatively, as shown in (c) of the figure, a guide groove is provided at the corner of the operation portion 13. Further, as shown in (d) of the same figure, a guide groove for the wire tube 49 may be provided in a part of the operation portion cover portion 19.

When the treatment instrument is inserted into the above-mentioned treatment instrument channel tube, the treatment instrument is projected from the distal end, and the raising base 46 is rotated via the raising wire 48 to raise and invert, particularly, Since a large amount of force is applied during the raising operation (at the time of maximum raising) as compared with the inversion operation, a large load acts on the bent portion 60 of the raising wire 48 that is the connecting portion. Therefore, when comparing the connection strength between the bent portion 60 having a U shape and the crank shape, the connection strength of the bent portion 60 formed in the crank shape is that of the bent portion 60 formed in the U shape. Superior to connection strength. Therefore, when there is no problem in forming the bent portion 60 into the crank shape, the bent portion 60 is formed into the crank shape.

Further, as shown in FIG.
6, a diagonal insertion through-hole 46c is formed, and the raising wire 48 is inserted through the diagonally formed insertion through-hole 46c to form a substantially Z-shaped bent portion 60, which is then connected. It is possible to further improve the strength of the crank-shaped bent portion 60.

As described above, the connection to the raising wire is raised to the insertion hole formed in the operating portion connecting member and the raising base without using the third component such as the stopping member and the adhesive or solder. After the wire is inserted once, the raising wire is formed into a bent portion by bending two portions of the through hole for inserting the raising wire, that is, the inlet side portion and the outlet side portion, thereby forming the bending portion for the raising wire. A simple structure and reliable connection to the raising base can be achieved.

When the raising wire is connected to the operating portion connecting member or the raising base, a bent portion is formed in advance at the end of the raising wire, and the inner diameter of the insertion through hole and the raising wire are connected to each other. Use the clearance with the outer diameter so that the bent portion can be inserted into the insertion through hole, or only the portion of the raising wire located at the inlet side of the insertion through hole can be bent first. May be inserted through the insertion through hole and then the outlet side portion may be bent to form a bent portion, or a straight-shaped raising wire may be inserted through the insertion through hole to a predetermined position. After that, both the inlet side portion and the outlet side portion may be folded back.

Further, since the bent portion is not fixedly connected to the raising lever or the like with an adhesive or the like, when the raising lever is rotated, the raising wire inserted through the insertion through hole is Since the movable wire is movable with respect to the through hole, the rising wire body is less likely to be subjected to bending stress from the outside. However, if it is desired to increase the strength of the connecting portion, an adhesive may be applied to the insertion through hole to integrally fix the raising wire to the operating portion connecting member or the raising base.

Further, by forming the tube guide portion shown in FIG. 8 (a), the tube guide member can also serve as a slip stopper and a finger rest portion when gripping the operating portion. In the tube guide portion shown in FIG. 9B, the operation portion can be made flat, so that the grip feeling can be made similar to that of the conventional operation portion. The tube guide part shown in (c) of the figure can improve the cleaning performance of the operation part, and the tube guide part shown in (d) of the figure has the guide groove on the cover side. There is no need to change the shape of the part. However, in this case, at least the tube guide portion of the insertion portion cover portion needs to be formed with a strength that can withstand the advance / retreat of the wire.

The wire tube extending from the mouth part may be a wire tube connected to the tip forming part or another tube.

Although the endoscope has been described by using the cover endoscope in the above-mentioned embodiments, the treatment instrument used for a general endoscope used without covering the endoscope cover is raised. An inexpensive treatment tool raising device can be provided by making the device have the same configuration.

Here, the structure for attaching and detaching the operating portion connecting member to the shaft 53 will be described. As shown in FIG. 6B, the raising lever 50, which is a member for connecting the operating portion, has an opening 56 for attaching and detaching the shaft 53 to and from a finger contact portion 57 of the raising lever 50.
Is provided at a position substantially opposite to. This opening 56
The opening width of the shaft is formed to be slightly smaller than the outer diameter of the shaft 53 so as not to easily fall off the shaft 53. For this reason, when the raising lever 50 is attached to or detached from the shaft 53, the hinge portion 58 is curved by grasping the lever 59 and the finger contact portion 57 with a finger so that the opening width is larger than the outer diameter of the shaft 53. It is supposed to be done in a large size.

As a procedure for attaching / detaching the raising lever 50, the cover endoscope 4 is covered with the insertion portion cover portion 18, the raising lever 50 is attached to the shaft 53, and then the operation portion cover portion 19 and Universal cord cover part 20
The operation part 13 and the universal cord 14 are covered with and the inspection is performed. After the endoscopic inspection is completed, the operation part cover part 19 and the universal code cover part 20 are removed, and the raising lever 50 is also removed and discarded.

A bending operation knob cover for covering the bending operation knob 52 may be formed separately from the operation portion cover portion 19.

As another example, after the insertion section cover section 18 is attached to the endoscope 4, the operation section cover section 19 is attached to the operation section 13, and the operation section cover section 19 is raised. By attaching the lever 50 to the shaft 53 and then covering it with a bending operation knob cover formed separately, the raising lever 50 can be directly operated without being covered with the cover, and operability is improved. When removing the operation portion cover portion 19, the raising lever 50 is removed.

By the way, during the inspection or the treatment, when the raising lever is operated to raise the raising base and hold the treatment tool in a tilted state, the raising lever is raised even if the finger is removed. It is desirable to keep the upper angle. Therefore, the raising lever is provided with the following friction imparting means so that the treatment instrument can be held in a state of being raised by a certain angle.

As shown in FIG. 9, a groove 61 is formed around the shaft 53 of the operating portion 13 to which the raising lever 50 is detachable, and the O-ring 6 is provided inside the groove 61 as a friction imparting means.
2 and a pressing member 63 are arranged. That is,
Until the raising lever 50 is attached to the shaft 53, the groove 6
A part of the pressing member 63 arranged in No. 1 is an O-ring 62.
Is projected from the outer surface 64 of the operation portion 13 by the elastic force of, and when the raising lever 50 is attached to the shaft 53, O
The elastic force of the ring 62 causes the pressing member 63 to press the raising lever 50 against the protrusion 65 formed on the shaft 53, thereby giving a sliding resistance to the rotation of the raising lever 50. That is, even if the finger is removed from the raising lever 50 during the inspection, the treatment tool can be kept raised by a certain angle due to the sliding resistance generated by the contact of the pressing member 63. Has become.

The friction applying means is not limited to that shown in FIG. 9, but may be friction applying means as shown in FIGS. 10 (a) to 10 (d). In FIG. 10A, a spring 66 is provided in place of the O-ring 62 of FIG. 9, and the raising lever 50 is pressed against the protrusion 65 of the shaft 53 to press the member 63 to provide sliding resistance. In FIG. 10B, the O-ring 62 is fixed to a part of the groove 61 by adhesion so that the elastic lever of the O-ring 62 directly presses the raising lever 50 against the protrusion 65 of the shaft 53. To give sliding resistance. In FIG. 10C, the O-ring 6 is attached to the raising lever 50.
2 is provided to press the raising lever 50 against the protrusion 65 of the shaft 53 to provide sliding resistance. In FIG. 10D, the shaft 5
When the O-ring 62 and the pressing member 63 are arranged inside the concave portion 67 formed in 3, and the raising lever 50 is attached to the shaft 53, the elastic force of the O-ring 62 causes the pushing member 63 to move. Sliding resistance is given to 50.
Other configurations, operations, and effects are the same as those in FIG. 9, and the same members are designated by the same reference numerals and the description thereof will be omitted.

By the way, the mechanism for attaching / detaching the raising lever 50 to / from the shaft 53 is configured as follows, so that the raising lever 50 can be stably attached without dropping off from the shaft 53.

As shown in FIGS. 11 and 12, the operation unit 13
An annular groove 71 is formed in the vicinity of the shaft 53.
A slidable guide member 72 that can slide in the groove 71 is provided inside the groove 71. A lever 72a is provided on a part of the slide type guide member 72 so that the operator can easily perform a slide (rotation) operation. Further, the sliding guide member 72 is provided with an O-ring 73 that functions as a stopper so that the sliding guide member 72 does not easily come off from the operating portion 13 and that provides sliding resistance. ing.

The raising lever 70 has a slightly larger opening width than the outer diameter of the shaft 53 at a position where an opening 56 for attaching to and detaching from the shaft 53 is substantially orthogonal to the finger contact portion 57 of the raising lever 70. While being formed, the convex portion 70a on the lower surface of the raising lever 70 is arranged between the shaft 53 and the slide guide member 72 as shown in FIG. Note that the annular slide-type guide member 72 is not a complete annular shape, but has a shape cut out in half as shown in FIG. 11. The other structure is the same as that of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

The operation of the attaching / detaching mechanism configured as described above will be described. In this embodiment, when the opening 56 of the raising lever 70 and the opening of the slide type guide member 72 are aligned with each other, they can be attached to and detached from the shaft 53. Therefore, after the opening 56 of the raising lever 70 is attached to the shaft 53, the raising lever 70 is rotated or the slide type guide member 72 is slid by the lever 72a. Lever 70
Of the opening 56 and the slide type guide member 72
The directions of the openings intersect with each other, and the two openings are closed so that the openings cannot be removed.

That is, the operator first of all starts the raising lever 7
The opening of the slide type guide member 72 is directed to a position where 0 can be easily attached and detached, and the opening 5 of the raising lever 70 is directed to this opening.
6 are aligned and the raising lever 70 is attached, and then the opening of the slide type guide member 72 and the opening 5 of the raising lever 70
The slide type guide member 72 may be slid so as to be displaced from the position 6.

At this time, the raising lever 70 is raised.
This is to rotate the slide-type guide member to a position where the raising lever 70 does not come off even if it is inverted. For example, in FIG.
If the current position of the raising lever 70 of 1 is the inverted position,
From the opening position of the slide type guide member 72 shown in FIG. 11, even if the raising lever 70 is raised and inverted, it does not come off from the shaft 53. Other effects and actions are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

By the way, in the above-mentioned cover type endoscope, since the raising lever had to be attached to and detached from the shaft of the cover endoscope for each case, the work was troublesome and the structure was complicated. It was expensive. Therefore, by providing the raising lever on the side of the cover endoscope, the labor of attaching and detaching the raising lever is saved, and the configuration of the raising lever is simplified.
It is possible to provide cheap things.

As shown in FIGS. 13 and 14, the raising lever 79 of this embodiment has a meshing portion 81 and is arranged on the shaft 53 of the operating portion 13, that is, on the endoscope side, and the endoscope The elevator (not shown) arranged on the cover side is connected via a rack 77 provided on the endoscope cover side.
That is, the raising wire 48 extending from the raising base arranged in the insertion portion cover portion of the endoscope cover has a columnar shape, and has a columnar shape and has a meshed portion 77b with which the meshing portion 81 meshes. Rack 7 mounting part 7 formed all around
A bent portion 60 is formed on 7a and connected.

Since the engaged portion 77b is formed on the entire circumference of the cylindrical rack 77, the engaged portion 77b is always engaged with the engaging portion 81 of the raising lever 79 even if the rack 77 is rotationally moved in the axial direction. It is designed to be opposed to.

Further, as shown in FIG. 14, by providing a convex portion 82 on a part of the shaft 53, the rack 77 is prevented from being displaced toward the angle knob side for operating the curved portion. In order to prevent the position shift to the angle knob side without providing the convex portion 82 on the shaft 53, the end surface side of the angle knob 83 may be projected as shown by the chain double-dashed line.

Further, the guide pipe 76 may be formed integrally with the mouth portion or may be provided separately. Reference numerals 80a and 80b are guide members, which guide the guide pipe 76 and the rack 77, and reference numeral 84 is a projection member which regulates the rotation range of the raising lever 79 provided in the operation portion 13. Other configurations are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

The connection between the raising lever 79 and the raising wire 48 configured as described above will be described. First, when the insertion portion cover portion 18 is completely attached to the insertion portion of the cover endoscope 4, the rack 77 and the guide pipe 76 disposed between the guide members 80a and 80b are removed as shown in FIG. It is provided so as to face the raising lever 79 in the inverted position. At this time, the engaged portion 77b of the rack 77 and the raising lever 79
The meshing portion 81 is formed so as not to mesh with the meshing portion 81.

Next, when the raising lever 79 is rotationally moved upward, the meshing portion 81 of the raising lever 79 and the rack 7 are moved.
By engaging with the engaged portion 77b of No. 7, the raising wire 48 is pulled and the raising operation is performed.

As described above, when the insertion portion cover portion is attached to the insertion portion of the cover endoscope, the meshing portion of the raising lever in the inverted position is arranged so that the meshed portion of the rack does not mesh. Therefore, even if the length of the insertion portion of the cover endoscope or the length of the insertion portion cover portion varies,
By merely changing the position of the engaged portion of the rack with respect to the raising lever, the raising / lowering operation can be always performed with the same stroke during the raising / lowering operation.

When the cover-type endoscope is inserted into the living body in the state where the rack is arranged as shown in FIG. 13, the raising wire is slightly moved so that the rack moves between the raising lever and the guide. Although it may slide, the position of the engaged portion of the rack with respect to the raising lever only changes, and the raising / lowering operation can always be performed with the same stroke during the raising / lowering operation.

Further, by providing the guide pipe, even when the rack moves back and forth, the raising wire in the guide pipe does not bend, so that the position of the bent portion is displaced due to the bending of the raising wire. There is no.

The lift wire may have some play in the stroke due to the clearance with respect to the guide pipe or the softness of the wire tube. Stroke play is eliminated by sliding friction.

Further, since the bent portion is located at least in the guide pipe at the time of shipping, the end of the raising wire does not come into contact with the user's hand, which is safe in handling. Other effects and actions are similar to those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

Another example of the connection between the raising lever arranged on the endoscope side and the raising wire will be described with reference to FIG. In this embodiment, a pin 89 is provided instead of the engaging portion of the raising lever 85, and a plurality of through holes 87 are provided instead of the rack on the endoscope cover side. A belt 86 that is hard to bend is provided. The belt 86 and the raising wire 48 are connected by a bent portion 60, and the raising lever 85 and the belt 86 have a through hole 87 at an appropriate position formed on the belt 86 with a pin 89 provided on the raising lever 85. It is designed so that it can be inverted / raised by being inserted into and connected to.

Reference numeral 88 is a grip portion having a slip stopper. Further, the guide members 80a and 80b or the guide pipe 76 may be provided to the wire tube 49 on the operation portion as described above. The other structure is the same as that of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

The connection between the raising lever 79 and the raising wire 48 configured as described above will be described. As shown in FIG. 7B, the raising lever 85 is arranged at the maximum raising position side, and the pin 89 provided on the raising lever 85 is fitted into the through hole 87 of the belt 86.
Then, the belt 86 and the raising wire 48 connected to the belt 86 are moved by rotating the raising lever 85.

As described above, by inserting the pins of the raising lever into the plurality of through holes provided in the belt for connection, the length of the insertion portion of the cover endoscope and the length of the insertion portion cover portion are increased. The pin of the raising lever can be inserted into the through hole for connection at an appropriate position depending on the variation in the height.

Also, since the shape of the raising lever is simple, the workability and washability are improved.

Further, as shown in FIG. 16, two bent portions may be provided to more firmly connect the belt and the raising wire and prevent the wire from rotating. In order to more firmly connect the belt and the raising wire at one bent portion, an adhesive is applied to the through hole for insertion and the vicinity thereof so that the raising wire and the belt are integrally fixed. Good. Other effects and actions are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof is omitted.

Another example of the connection between the raising lever provided on the endoscope side and the raising wire will be described with reference to FIGS. 17 to 19. In the present embodiment, as described above, without engaging the engaging portion of the raising lever with the engaged portion of the rack, or by inserting the pin of the raising lever into the through hole provided in the belt,
The raising wire is directly connected to the raising lever.

That is, as shown in FIG. 17A, the raising wire 48 extended from the raising base is inserted into the insertion hole 96 of the wire connecting portion 95 provided with the raising lever 94, and this insertion is performed. It is fixed by a screw member 97 arranged so as to be orthogonal to the hole 96. .

The inlet 98 of the insertion hole 96 is formed in a tapered shape so that the raising wire 48 can be easily inserted. Further, the guide member 80b not only guides the guide pipe 76 but also the wire connecting portion 95 of the raising lever 94.
You may make it double as the abutting part which regulates to the upside down direction. Further, the screw member 97 has a grip 10
By causing 0 to project slightly from the maximum outer diameter line 99 of the angle knob (not shown), the rotation operation is facilitated.

As described above, since the number of parts can be reduced by directly connecting the raising wire to the raising lever with the screw member, it is possible to provide the endoscope cover which is a disposable member at a low cost. You can Other configurations, operations, and effects are the same as those of the above-described embodiment, and the same members are designated by the same reference numerals and the description thereof will be omitted.

However, when the operation in the inversion direction is started after the above-mentioned raising lever 94 is operated to the maximum raising position, the raising wire 48 is loosened as shown in FIG. The movement of the raising base 46 may not correspond to the movement of the raising base (not shown).

For this reason, as shown in FIG. 18, with the raising lever 94 completely inverted, the raising wire 48 is inserted into the insertion hole 96 formed by being inclined by A degrees with respect to the axis line and screwed. Even in the maximum rising state, the raising wire 4
8 is directed toward the end of the wire tube 49 by an angle A, so that the slack of the raising wire 48 is eliminated.

In addition, as shown in FIG. 19, the inner diameter of the wire tube 49 formed by, for example, a close contact coil pipe, a rubber tube or a super elastic metal is close to the inlet 98 of the connecting portion 95.
By providing an elastic pipe 101 slightly thicker than the outer diameter of the elastic pipe 101 and slidably fitting the elastic pipe 101 to at least a part of the wire tube 49, the raising lever 9
Since it slides on the wire tube 49 during the rotation operation of 4, the elastic pipe 101 plays the role of a guide for the raising wire 48 when the raising lever 94 starts operating from the maximum raising to the inversion side. The slack of the wire 48 is eliminated.

[0076]

As described above, according to the present invention, it is possible to provide an endoscope in which the raising wire and the treatment instrument raising base and the raising wire and the operating portion connecting portion can be easily connected.

[Brief description of drawings]

FIG. 1 to FIG. 7 relate to an embodiment of the present invention, and FIG. 1 is an explanatory diagram showing the overall configuration of an endoscope device of an endoscope cover system.

FIG. 2 is a perspective view showing a schematic configuration of the entire endoscope cover.

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

FIG. 4 is a perspective view showing a configuration of a distal end portion of an endoscope cover.

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

FIG. 6 is an explanatory view showing a connection between a treatment instrument raising wire and an operation portion connecting member.

FIG. 7 is an explanatory view showing the connection between the treatment instrument raising wire and the treatment instrument raising base.

FIG. 8 is an explanatory view showing a tube guide member.

FIG. 9 is a view showing a friction imparting means of a detachable operation portion connecting member.

FIG. 10 is a view showing another example of the friction imparting means of the detachable operation portion connecting member.

11 and 12 relate to another example of the attachment / detachment mechanism of the operating portion connecting member, and FIG. 11 is a plan view showing a schematic configuration of the attachment / detachment mechanism.

FIG. 12 is a cross-sectional view showing a schematic configuration of an attachment / detachment mechanism.

13 and 14 relate to a connecting means for connecting a raising lever and a raising wire provided on the endoscope side, and FIG. 13 is a plan view showing a schematic configuration of the connecting means.

FIG. 14 is a sectional view showing a schematic configuration of a connecting means.

15 and 16 relate to another example of the connecting means between the raising lever and the raising wire provided on the endoscope side.
Is a plan view showing the schematic configuration of the connecting means.

FIG. 16 is a plan view showing another example of the connection between the belt and the raising wire.

17 to 19 relate to another example of a connecting means for connecting a raising lever and a raising wire provided on the endoscope side.
7 is a plan view showing a schematic configuration of the connecting means.

FIG. 18 is a plan view showing an example of eliminating looseness of the raising wire.

FIG. 19 is a plan view showing another example of eliminating looseness of the raising wire.

FIG. 20 is an explanatory view showing a connection of a conventional raising wire.

[Explanation of reference numerals] 48 ... Treatment instrument raising wire 50 ... Operation portion connecting member 60 ... Bending portion

Claims (1)

[Claims] 1. A treatment instrument raising base for moving a treatment instrument channel, which is inserted through the treatment instrument channel and protruded from a distal end portion thereof, to a predetermined position, a treatment instrument raising wire, and / or a treatment instrument raising wire. Alternatively, in the endoscope cover with a channel that covers at least the insertion portion of the endoscope, which includes the treatment instrument raising device including the operation portion connecting member, the operation portion connecting member of the treatment instrument raising device and / or the treatment. An inside of a channel characterized in that the instrument raising base is inserted through the operation part connecting member and / or the through hole for insertion formed in the treatment instrument raising base and is connected by the bent portion of the treatment instrument raising wire formed by bending. Endoscope cover.