JP3220580B2 - Cover-type endoscope - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover type endoscope having a treatment instrument raising mechanism.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used. When observing the inside of a body cavity with an endoscope, it is necessary to insert the distal end of the endoscope into the body cavity.For example, if the body fluid or the like adheres to an observation window provided at the distal end of the insertion portion. If so, observation may be difficult.

[0003] For this reason, in order to remove the bodily fluid attached to the observation window, the endoscope is provided with an air supply line and a water supply line so that a fluid such as a washing liquid or a cleaning gas can be sprayed on the observation window by a manipulation at hand. Is provided. Some include a suction line for sucking and discharging unnecessary body fluid. Furthermore,
In some cases, a treatment tool channel is provided so that tissue can be collected with biopsy forceps or a therapeutic treatment can be performed with the treatment tool.

[0004] Endoscopy requires the use of a clean endoscope that has been thoroughly cleaned and disinfected before the examination. For this reason,
When used for patients, etc., they are washed and sterilized to ensure prevention of infectious diseases. However, it takes time to completely clean and disinfect, so that there is a problem that the use efficiency of the endoscope is reduced.

Therefore, by using the endoscope itself in a state of being covered with the endoscope cover provided with the various pipes for air supply, water supply, etc., only the endoscope cover is disposable after use. There has been proposed a cover-type endoscope that does not need to be replaced and cleaned and sterilized after use.

[0006] A cover type endoscope is disclosed in, for example, Japanese Patent Publication No. 2-54734 or US Patent No. 3,162,190. In such a cover-type endoscope, the insertion portion is cleaned, sterilized, and disinfected in advance. Then, the endoscope is inserted into the body cavity of the patient for inspection and treatment while covering the insertion portion of the endoscope with the endoscope cover, and after use, the endoscope cover is removed and discarded.

As described above, by disposing the endoscope cover for each patient, the endoscope does not need to be washed and disinfected, and can be kept clean at all times, which is very simple.
And the endoscope can be used continuously without rewashing and re-disinfection.

[0008]

Many of the above-mentioned cover type endoscopes use a frontal direct-viewing type endoscope.
A proposal using a side-view type endoscope has not been particularly proposed. The side-view type endoscope is provided with an observation window and an illumination window along the longitudinal direction of the insertion section. In addition, it is difficult to cover the side-view type endoscope with a cover of a normal endoscope because the structure of the endoscope itself is different.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cover-type endoscope having relatively good operability in order to eliminate such drawbacks of the cover-type endoscope.

[0010]

SUMMARY OF THE INVENTION A cover type endoscope apparatus according to the present invention is an endoscope having an elongated insertion portion inserted into a body cavity.
The mirror and the endoscope are detachably covered, and the
Endoscope cover having a gripper that can be gripped by the operator.
And, provided on the proximal side of the endoscope cover,
A treatment instrument insertion hole into which a treatment instrument for treatment can be inserted;
One end is communicated with the treatment instrument insertion hole, and the other end is the endoscope tip.
A treatment in which an opening is formed in the treatment instrument and the treatment instrument can be inserted
Tool insertion channel and opening of the treatment tool insertion channel
Part that is provided on the side of the head and is capable of raising the inserted treatment tool.
The fulcrum is the upper part and the notch formed on the hand side of the grip part.
Movable provided at one end of a lever that is swingably formed
Part, provided in the endoscope cover, one end of the endoscope cover
Connected to the movable part and the other end is connected to the movable part.
And an upper wire.

[0011]

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. A first embodiment of the present invention will be described with reference to FIGS. In FIG. 1, an endoscope apparatus 1 of an endoscope cover type has a cart in which a cover type endoscope 2 and various peripheral devices to which the cover type endoscope 2 is connected are provided. 5 and a cover holder 6 for holding the endoscope 2 of the cover type.

The cover type endoscope 2 is an endoscope cover with a channel (hereinafter, referred to as an endoscope cover) 3 provided with channels such as an air supply / water supply conduit, a suction conduit, and a treatment instrument channel. And a cover endoscope 4 attached to the endoscope cover 3.

When performing an endoscopic examination, the insertion portion of the cover endoscope 4 is covered with a clean endoscope cover 3, and the like.
After the examination, the endoscope cover 3 is discarded. On the other hand, the cover endoscope 4 is characterized in that it is covered with a new clean endoscope cover 3 and is used repeatedly. This eliminates the need for cleaning and disinfecting the endoscope after the inspection.

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 cover endoscope 4 is mounted on the endoscope cover 3. , An expander) 10 and the like are stored. A monitor 11 that receives an image signal from the video processor 8 and displays an endoscopic image is mounted on the upper surface of the cart 5.

The endoscope cover 3 includes a soft insertion portion cover portion 18, an operation portion cover portion 19 made of a thin and soft material, for example, a polymer material such as vinyl chloride, and a universal code cover portion 20. The endoscope insertion section 12 and the operation section 1 of the endoscope 4 for a cover
3. The universal cord 14 is covered.

The cover endoscope 4 includes an operation section 13 which also serves as a large-diameter grip section at the proximal end of the elongated endoscope insertion section 12 on the proximal side.
Are connected. A universal cord 14 extends from the side of the operation unit 13, and a connector 15 is provided at an end 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. The video processor 8 is detachably connected to the cover endoscope 4 via a signal cable 16 extending from the side of the connector 15, and drives the image pickup unit built in the cover endoscope 4. , And a signal output from the image pickup means, and converts the signal into a standard video signal to be output to the monitor 11.

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.
The suction is controlled by these solenoid valves. The air supply control valve 21, the water supply control valve 22, and the suction control valve 23 include:
Air supply pipes 2 extending from the insertion portion cover 18 respectively
4. The water supply line 25 and the suction line 26 are connected.

The dilator 10 is connected to an expansion tube 17, through which the endoscope cover 3 is connected.
It is for expanding by sending air inside. This expansion allows the endoscope cover 3 to be easily attached or detached from the endoscope 4 for cover.

A suction tube 27 is connected to the suction control valve 23, and a suction device (not shown) is connected to an end of the suction tube 27 so as to suction unnecessary body fluids and the like from the end of the endoscope. A water supply tube 28 is connected to the water supply control valve 22, and a water supply tank 29 is connected to a distal end thereof. Further, two air supply tubes 3 are provided from the fluid control device 9.
0 extends and is connected to the air supply control valve 21 and the water supply tank 29.

FIG. 2 shows the insertion section cover 1 of the endoscope cover 3.
8 shows the entire configuration. The insertion portion cover portion 18 is provided with an endoscope operation portion fixing mouth portion (hereinafter referred to as the mouth portion) for connecting and fixing the cover tip configuration portion 31, the cover outer cover 32, and the endoscope operation portion 13 from the front end side. ) 33 are hermetically connected. The cover distal end portion 31 is provided with an observation opening 34 and a channel opening 35. A transparent cover glass is disposed in the observation opening 34, and an observation window and an illumination window of an endoscope inserted into the cover face each other, and irradiate illumination light toward a portion to be inspected and perform inspection. The part can be observed.

The mouth portion 33 includes a treatment instrument insertion port 36 communicating with a treatment instrument channel provided therein, and a distal end portion of a treatment instrument such as forceps inserted through the treatment instrument channel from the treatment instrument insertion port 36. A treatment tool raising lever 3 as a treatment tool raising device operating member for operating the treatment tool raising device to be raised
7 are provided.

FIG. 3 shows a state in which the endoscope cover 3 is mounted on the cover endoscope 4. The insertion part 12 of the cover endoscope 4 is inserted into the insertion part cover part 18, the operation part 13 of the endoscope is covered with the operation part cover part 19 previously connected to the mouth part 33, and the universal cord 14 is covered. After covering the universal code cover portion 20, the fixing tape 38 is wound around a joint of the cover portion and fixed, so that each portion of the endoscope 4 for the cover is attached to the endoscope cover 3 (the insertion portion cover portion 18,
Operation unit cover 19, universal code cover 2
0) to hermetically cover and isolate from the external environment.

FIG. 4 shows the configuration of the distal end portion 31 of the endoscope cover. The distal end configuration portion 31 is formed of a hard resin or the like, and communicates with an endoscope insertion channel provided in the insertion portion cover portion 18, and an endoscope distal end portion insertion hole 41 into which the endoscope distal end portion fits, A channel distal end 42 communicating with the treatment instrument channel is provided, and the distal end of the treatment instrument channel is opened to the outside through the channel opening 35. Observation opening 34 beside endoscope insertion hole 41
Is provided with a cover glass 43 for transmitting light and isolating the distal end of the endoscope from the external environment.

The distal end portion of the insertion portion cover portion 18 of the endoscope cover including the distal end portion 31 is represented by a sectional view in the axial direction.
The configuration is as shown in FIG. A channel tube 45 constituting the treatment instrument channel 44 is inserted into the insertion portion cover portion 18.
5 has a wedge-shaped slit cut into almost the center of the channel tube 45.

A ring member 46 having a rising wire 48 connected to the end thereof is fixed to the tip 47. The pushing and pulling of the rising wire 48 raises and lowers the tip 47. Things. The raising wire 48 passes through the inside of the insertion portion cover 18, passes through the inside of the wire tube 49 connected to the distal end component 31, and extends to the mouth 33 at the rear end.

Although not shown, the insertion portion cover 18
Inside, an endoscope insertion channel is provided substantially in parallel with the channel tube 45 of the treatment tool 44, so that the endoscope 4 for a cover is inserted.

As shown in FIG. 6, the mouth portion 33 has a grip portion 50 on its operation portion side.
The cover endoscope 4 is positioned inside as shown in FIG. Further, the grip portion 50 has a wire conduction path 51 passing through the raising wire 48 inside a wall surrounding the endoscope operation portion.

The end of the raising wire 48 is extended from the grip portion 50, and the lever 54 swings around the hinge portion 53 as a fulcrum.
Is fixedly connected to a movable portion 52 at one end of the movable member. The other end of the lever 54 of the lever 54 is non-slip as a finger hook 55.

In the first embodiment, the length B from the hinge portion 53 to the movable portion 52 is
, But the lengths of B and C may be the same or opposite to this embodiment.

As shown in FIG. 6, the operating portion 13 of the cover endoscope 4 faces behind the grip portion 50, and the operating portion 13 is provided with an angle knob 62 for performing a bending operation. Therefore, the user grips the grip portion 50 and performs a bending operation with the angle knob 62, and operates the finger holding portion 55 of the raising operation lever 54 provided near the angle knob 62 to perform the raising operation. I can do it.

FIG. 7 is an end view taken along the line AA '.
The position on the cross section of the raising wire 48 is shown. The grip 50 and the lever 54 are made of a resin material having a self-hinge property, for example, polypropylene or the like.

Next, the operation will be described. The movable portion 52 swings by swinging the finger hooking portion 55 around the hinge portion 53 with the thumb or the like by gripping the grip portion 50 and pushing and pulling the raising wire 48 fixed thereto. Thereby, the tip part 47 shown in FIG.
Can be inverted. Further, the angle knob 62 can be operated while the grip portion 50 is held.

Further, the effects will be described. A grip portion 50 or an extension of the mouth portion 33 of the endoscope cover 3
Since the finger hanging portion 54 for raising the treatment instrument is provided, the user can complete the preparation without connecting the raising wire or the like only by attaching the endoscope cover 3 to the cover endoscope 4. ,
Easy. Since the mouth 33, the grip 50, and the lever 54 can be molded by resin molding, the cost can be reduced. Then, in the present configuration, in FIG.
The diameter of the grip can be reduced.

Further, since the lever 54 for raising operation is provided near the angle knob 62 for performing the bending operation, both operations can be performed while the grip portion 50 is gripped, so that operability is good. In addition, it is possible to improve the sniper property for guiding the treatment using the treatment tool to the target site, and to reduce the fatigue of the user.

Next, a second embodiment of the present invention will be described with reference to FIGS. First, the configuration will be described.
As shown in FIG. 9, the connecting portion 5 is provided on the opening side of the grip portion 56.
There is an arm 58 connected by 7, and the end of the raising wire 48 is connected and fixed to the end 59. The arm 58 has a shape surrounding the endoscope operating portion for the cover similarly to the grip portion 56, but one end thereof is fixed by the connecting portion 57 and the other end is a free end.

Further, in the operation section 60 of the cover endoscope 4, a raising knob 61 is rotatably positioned around an axis 63 near an angle knob 62, and a rod 64 is provided at one end thereof. They are connected by pins 65. Rod 6
The front end of the arm 4 is engaged with the end 59 of the arm 58 by a claw 66 as shown in a cross section along the line D-D 'in FIG. The materials of the arm 58, the connecting portion 57, and the grip portion 56 in the second embodiment are the same as those in the first embodiment. Other configurations are the same as those of the first embodiment, and a description thereof will be omitted.

Next, the operation will be described. By moving the raising knob 61, the end 59 of the arm 58 engaged with the rod 64 moves in the axial direction of the endoscope, and the raising wire 48 is pushed and pulled. Thus, the treatment tool can be raised in the same manner as in the first embodiment. Further, when the cover endoscope 4 is detached from the endoscope cover 3, the claws 66 are disengaged by pressing the rod 64 and can be separated.

Further, the effects will be described. Compared to the first embodiment described above, the claw 66 must be operated at the time of attachment and separation. However, since this operation can be performed with one touch, almost the same operability as the first embodiment can be obtained.

Next, a third embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. In the third embodiment, another method of raising the treatment instrument raising table at the distal end of the cover type endoscope will be described.

First, the configuration will be described. FIG. 11 shows the appearance of the distal end portion of a side-view type cover endoscope having a treatment instrument raising stand.
FIG. 12 is a cross-sectional view thereof, and FIG. 13 is a perspective view of the distal end of the cover type endoscope.

The treatment instrument raising table 67 includes a core member 68 and an elastic film 69 covering the core member 68. The elastic film 69 is formed continuously with the partition. Further, one end of the core member 68 is exposed in the same space as the distal end 71 of the cover-type endoscope, and engages with a pin 70 slidably disposed in the axial direction at the distal end 71 of the cover-type endoscope. are doing. This pin 70
Is connected to a raising knob provided on an operation unit of the cover type endoscope (not shown) via a member such as a wire provided inside the cover type endoscope.

Next, the operation will be described. By operating a raising knob 71 (not shown), the pin 70 slides, and the core member 68 is pushed and pulled. As a result, the elevator 67 performs the operation of elevating / reversing. Becomes possible.

Further, the effect will be described. Raising knob,
Since the transmission member such as the raising wire is configured on the cover endoscope side, the configuration on the endoscope cover side is simplified and the cost can be reduced.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG.

First, the configuration will be described. FIG. 14 shows an endoscope cover 67, FIG. 15 shows a cover endoscope 68, and FIG. The endoscope cover 67 shown in FIG. 18 has a U-shaped opening 70 at an open end of a grip portion 69, and is connected to a raising wire 48 (not shown) so as to surround the opening curvature portion, and is rotatably positioned. Have been. When the cover endoscope 68 is attached, the angle knob 72
Is fitted into the U-shaped opening 70, and the rotation center of the raising knob 71 and the axis center of the angle knob 72 match.

Next, the operation will be described. By rotating the raising knob 71, the raising wire is pushed and pulled. Thereby, the raising operation of the treatment tool becomes possible.

To explain the effect, the endoscope can be easily attached to the cover.

By the way, when performing the raising operation of the treatment tool using the wire, it is conceivable that mucus, blood, germs and the like are transmitted to the user's hand through the gap between the wire and the conduit of the wire guide. Therefore, it is necessary to seal a necessary portion of the wire and the conduit with an elastic body to keep the cleanliness of the user's hand side. To realize this, the following configuration can be considered.

(A) FIG. 17 shows a state in which a seal member made of a thin film elastic body is attached to the end of the guide conduit 73 at the end of the endoscope cover and sealed.

(B) FIG. 18 shows a case in which a seal member 74 is attached to the opening on the hand side, which is shown in the second embodiment of FIG. 10, but a similar configuration can be considered in the first embodiment.

FIG. 19 is an overall view and FIG. 20 is an enlarged view of a main part of the embodiment in which the wires are connected on the side of the hand operation unit. In this embodiment, an O-ring 75 is used as a seal member, and a pipe member 76 is provided on the wire side for reinforcement.

[0054]

As described above, according to the present invention, the operation of the treatment instrument raising knob can be more easily performed, the sniper property in various treatments can be improved, and the user's fatigue can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an endoscope apparatus provided with a first embodiment of the present invention.

FIG. 2 is a perspective view showing the overall configuration of an insertion unit cover.

FIG. 3 is a perspective view showing a combined state of an insertion portion cover and a cover endoscope.

FIG. 4 is a perspective view showing a configuration of a cover tip.

FIG. 5 is a cross-sectional view showing a main part of a distal end portion of the insertion portion cover portion.

FIG. 6 is a partially broken plan view showing a grip portion.

7 is an end view along the line AA 'in FIG.

FIG. 8 is an end view showing an example in which the arrangement of the raising wires is at the corners.

FIG. 9 is a plan view showing a second embodiment of the present invention.

FIG. 10 is a cross-sectional view taken along a line DD ′ in FIG. 9;

FIG. 11 shows a third embodiment of the present invention, and is an external view of a distal end of a side-view type cover endoscope having a treatment instrument raising stand.

FIG. 12 is a cross-sectional view of a distal end of a side-view type cover endoscope having a treatment instrument raising stand.

FIG. 13 is a front perspective view of a side-view type cover endoscope having a treatment instrument raising stand.

FIG. 14 is a plan view showing a fourth embodiment of the present invention and showing a cover-type endoscope.

FIG. 15 is a plan view showing an endoscope for a cover.

FIG. 16 is a plan view showing a state where the endoscope cover and the endoscope for a cover are combined.

FIG. 17 is a perspective view showing a state where a seal member is attached to each end of the guide tube at the distal end portion of the endoscope.

FIG. 18 is a cross-sectional view showing a state where a seal member is attached to an opening on the hand side.

FIG. 19 is an overall view showing a state where wires are connected by an operation unit on the hand side;

FIG. 20 is an enlarged view of a main part showing a state where the wires are connected by the operation unit on the hand side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endoscope apparatus 2 Cover type endoscope 3 Endoscope cover 4 Endoscope for cover 13 Operation part 33 Mouth part 48 Erect wire 50 Grip part 54 Lever 55 Finger part 62 Ankle knob

Claims (1)

(57) [Claims] 1. An elongated insertion portion to be inserted into a body cavity.
The endoscope and the endoscope are detachably covered, and the
An endoscope cover formed with a grip portion that can be gripped by an author; and an endoscope cover provided on the proximal side of the endoscope cover for treating a body cavity.
A treatment instrument insertion hole into which a treatment instrument for inserting a treatment instrument can be inserted, one end of which is connected to the treatment instrument insertion hole, and the other end of which is a tip of the endoscope.
The opening is formed in the portion, and the treatment tool can be inserted through the opening.
An instrument insertion channel, provided on the opening side of the treatment instrument insertion channel,
The raised portion capable of raising the treatment instrument and a notch formed on the hand side of the grip portion as a fulcrum.
A movable part provided at one end of a lever formed at the end, and a movable part provided at the endoscope cover, one end of which is in contact with the raised part.
Connection and the other end is connected to the movable part.
Ya and cover type endoscope apparatus characterized by comprising a.