JP2587239Y2 - Endoscope device with endoscope cover system with channel - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope device with a channel endoscope cover in which a cover endoscope is covered with an endoscope cover with a channel .

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical field and the like. When an endoscope used in the medical field is inserted into a living body, an observation window provided at a distal end portion of an insertion portion may not be sufficiently observed due to adhesion of a body fluid or the like. For this reason, an air supply pipe or a water supply pipe is provided so that a fluid can be sprayed on the observation window to remove body fluid or the like attached to the observation window by an operation on the hand side. In some cases, a suction conduit for sucking and discharging unnecessary body fluids is provided.

In some cases, a forceps channel (treatment instrument channel) is provided so that a tissue can be collected with a biopsy forceps or a treatment can be performed with a treatment instrument.

In an endoscope provided with a pipe such as an air supply pipe or a forceps channel, when used for a patient or the like, washing or sterilization is performed to surely prevent an infection or the like. However, it takes a long time to completely perform the cleaning and the sterilization. Therefore, there are problems such as a decrease in the use efficiency of the endoscope and a troublesome operation such as the sterilization.

[0005] For this reason, an endoscope having an endoscope cover system is used in which the endoscope itself is covered with the endoscope cover so that the endoscope itself does not become dirty even after use. As a conventional example, for example,
No. 54734.

In the endoscope apparatus of the endoscope cover type provided with such a conventional forceps raising device, the forceps table is attached to the endoscope for the endoscope cover. The forceps were raised for each forceps channel provided on the cover.

[0007]

[Devised a problem to be solved is, however, in the method for raising the forceps channel by forceps, it is necessary to bend the forceps channel extremely small radius of curvature, which is difficult in practice, sufficient It is not possible to obtain a rising angle. In addition, when the forceps are moved forward and backward with the forceps raised, there is a problem that the forceps channel is easily damaged.

[0008] The present invention has been made in view of the above problems, and an object thereof endoscope
Provided is an endoscope device with a channel-equipped endoscope cover system having a forceps elevating device that ensures sufficient watertightness of a cover, obtains a sufficient forceps elevating angle, and has a low risk of damaging a forceps channel. It is in.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a channel having an elevating base on an endoscope cover with a channel and an endoscope insertion channel.
A partition wall is provided for watertight isolation from the
If the endoscope is provided with driving means for raising the raising table,
In both cases, the elevator and the driving means are connected in a watertight manner through a partition.
That by providing the connecting means, thereby raising the forceps itself forceps holder. This allows the watertightness of the endoscope cover
As a result, a sufficient forceps elevating angle can be obtained, and a forceps elevating device with a low risk of damaging the forceps channel when the forceps elevate is realized.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. 1 to 10 relate to a first embodiment of the present invention. FIG. 1 shows an entire configuration of a cover-type endoscope apparatus of the first embodiment, and FIG. 2 shows a structure of a cover-type endoscope. , FIG. 3 shows the entirety of the cover endoscope, FIG. 4 shows the distal end of the cover endoscope, FIG. 5 shows the distal end of the cover, FIG. 6 shows a sectional view of FIG. 7 shows a state in which the gears on the cover endoscope side and the gears on the cover side are engaged, FIG. 8 shows a longitudinal sectional view of FIG. 5, FIG. 9 shows a configuration of a motor control system, and FIG. Indicates the control contents of FIG.

As shown in FIG. 1, an endoscope apparatus 1 of an endoscope cover type is an endoscope cover with a channel (hereinafter abbreviated as a cover) 2A of a first embodiment and a cover attached to the cover 2A. Endoscope with a channel endoscope 2B composed of a cover endoscope (hereinafter abbreviated as a cover type endoscope) 2 and a light source device 3 for supplying illumination light to the cover endoscope 2B. A video processor 4 that performs signal processing on imaging means built in the cover endoscope 2B; a fluid control device 5 that performs air supply / water supply via a tube of the cover 2A; An endoscope cover extender with a channel (hereinafter abbreviated as cover extender) 6 used for mounting the endoscope 2B and a monitor 7 for displaying a video signal processed by the video processor 4. Constitution Is, the light source device 3, video processor 4, a fluid control system 5, the cover extender 6 is accommodated in the cart 8, the monitor 7 on the upper surface of the cart 8 is adapted to be placed.

FIG. 2 is an enlarged view of the cover-type endoscope 2 shown in FIG. When an endoscopy is performed, the clean cover 2A covers the clean cover endoscope 2B, and after the test the cover 2A is discarded, while the cover endoscope 2B is replaced with a new clean cover. It is characterized by being covered by 2A and repeatedly used.

[0013] Insert portion cover portion 11 constituting cover 2A
A, when the cover endoscope 2B is attached to and when the attached cover endoscope 2B is removed, the cover holder 10 shown in FIG. 1 is used. 10, the endoscope insertion portion 11B of the cover endoscope 2B is inserted or removed.

The endoscope 2B has an elongated and flexible endoscope insertion portion (hereinafter simply referred to as an insertion portion) 11.
B, an endoscope operation section (hereinafter abbreviated as an operation section) 12B formed on the proximal end side of the insertion section 11B, and a universal cord 13B extending from a side of the operation section 12B.
The connector 14 provided at the end of the universal cord 13B can be detachably connected to the light source device 3. By connecting to the light source device 3, the end of the light guide is connected to the end of the light guide. Illumination light from a lamp is provided.

The connector 14 is provided with an electrical contact portion 14a, and a signal connector 17 provided at an end of a signal cable 16 connected to the electrical contact portion 14a can be detachably connected to the video processor 4. On the other hand, the cover 2A includes an insertion portion 11B of the cover endoscope 2B, an operation portion 12B, an insertion portion cover portion 11A for covering the universal cord 13B, an operation portion cover portion 12A, and a universal code cover portion 13A.

The insertion portion cover portion 11A includes an insertion portion cover outer cover 17A for covering the insertion portion 11B, and an endoscope operation portion fixing mouth body provided airtightly and watertightly at the base end of the insertion portion cover outer cover 17A. 18 and a cover tip 19A provided air-tightly and water-tightly at the end of the insert cover 17A.

In the cover 2A, for example, the insertion portion cover portion 11A, the operation portion cover portion 12A, the universal code cover portion 13A and the like are formed of a thin synthetic resin such as polyurethane, polyester, or silicon. Further, regarding the operation unit cover 12A, in consideration of its detachability, operability, and graspability, for example, polysulfone, polycarbonate,
A rigid thermoplastic resin such as polyetherimide or modified polyphenylene oxide may be used.

Illumination light supplied to one end face of the light guide from a lamp (not shown) in the light source device 3 is transmitted by the light guide, and is transmitted to the distal end 1 of the insertion portion 11B.
The light is emitted to the front subject side through the illumination optical system attached to the illumination window 22B (see FIG. 4) of 9B and the transparent plate of the cover illumination window 22A (see FIG. 5) provided so as to cover the illumination optical system. You.

The illuminated subject such as the affected part is placed on a transparent plate of a cover observation window 23A provided adjacent to the cover illumination window 22A and an observation window 23B provided inside the cover observation window 23A so as to face the cover observation window 23A. Objective optical system 24 mounted
An optical image is formed on the focal plane of the objective optical system 24 through

Cover illumination window 22A and cover observation window 23
The cover distal portion 19A which A is provided, the distal end of the insertion portion covering outer skin 17 A soft to isolate the insertion portion 11B of the cover endoscope 2B from the external environment is hermetically and watertight connected .

As shown in FIG. 2, a CCD 25 is arranged on the focal plane of the objective optical system 24, the optical image is photoelectrically converted, and a signal code 26 inserted through the insertion portion 11B and the universal code 13B is shown in FIG. Input to the video processor 4 via the signal cable 16 shown in FIG.
A standard video signal is generated, and this video signal is
And the subject image is displayed on the display screen.

As shown in FIG. 2, the insertion portion cover 11A
Inside, an air supply tube and a water supply tube (not shown),
A suction tube is provided, and an air supply line 27a,
A water supply pipe 27b (see FIG. 6) and a suction pipe 28 are formed. As shown in FIG. 6, the distal ends of the air supply conduit 27a and the water supply conduit 27b communicate with the nozzle 29 of the cover distal end portion 19A, and the distal end opening of the nozzle 29 faces the outer surface of the cover observation window 23A.

The proximal ends of the air supply tube and the water supply tube extend above the endoscope operating portion fixing mouth portion 18,
It is extended to the fluid control device 5 side in a state where it is covered with the universal cord cover 13A together with the universal cord 13B, and the base end is connected to the fluid control device 5. Therefore, when bodily fluid or the like adheres to the cover observation window 23A, it can be removed by air supply or water supply through the air supply line 27a and the water supply line 27b.

A forceps insertion port 31 and an expansion tube opening 33 for connecting an expansion tube 32 connected to the cover expander 6 are provided on a side surface of the endoscope operation section fixing opening 18. The forceps insertion port 31 merges with the suction conduit 28, is bent at the cover distal end 19A, and opens at the side of the cover distal end 19A at the forceps outlet 30 also serving as a suction port, as shown in FIG. ing.

An opening 35 of an endoscope insertion channel 34 for inserting (attaching) the insertion portion 11B of the cover endoscope 2B is provided on the upper side of the endoscope operation portion fixing mouth portion 18.
Is provided. The opening 35 communicates with an expansion tube mouth 33 provided to open to the side of the endoscope operation portion fixing mouth 18.

The endoscope insertion channel 34 includes the tip 1
9A, an insertion portion cover outer skin 17A, and an air supply conduit 27a in an internal space surrounded by an endoscope operation portion fixing mouth portion 18.
And the water supply line 27b and the suction line 28 are excluded.
It is a part into which the endoscope 2B for a cover is inserted.

The endoscope insertion channel 34 is formed at the base end thereof, and has an opening 35 into which the insertion portion 11B is inserted.
And the expansion tube mouth 3 to which the expansion tube 32 is connected
3 is open to the outside, and the others are not exposed to the outside. Therefore, when the insertion portion 11B is inserted,
The insertion portion 11B is covered with a channel forming member (the insertion portion cover outer skin 17A or the like) forming the endoscope insertion channel 34 except for the base end side, and is not exposed to the outside. The operation portion 12B on the proximal end side of the insertion portion 11B is also covered by the operation portion cover portion 12A.

For this reason, when used for endoscopy, the insertion portion 11B of the endoscope 2B for a cover is maintained in a state in which it is not contaminated. On the other hand, since the cover 2A is contaminated, the disposable b le cover to be discarded after use.

The fluid control device 5 is a device for controlling air supply, water supply, and suction using an electromagnetic valve, and is provided with an air supply control valve 80, a water supply control valve 85, and a suction control valve 94 as shown in FIG. The air supply line 27a, the water supply line 27b, and the air supply line 81, the water supply line 86, and the suction line 95 connected to the suction line 28 provided in the insertion portion cover portion 11A are connected to each other. I have. Suction tube 9 3 to the suction control valve 94
Is connected to the end of the suction device 92 (not shown).
Connected to.

A water supply tube 84 is connected to the water supply control valve 85, and a water supply tank 83 is connected to the water supply tube 84. Two gas supply tubes 79 and 82 extend from the liquid control device 5 and are connected to a gas supply control valve 80 and a water supply tank 83, respectively.

FIG. 3 shows the endoscope 2B for a cover. The operating portion 12B has a bending portion 20 provided on the distal end side of the insertion portion 11B.
There are provided bending operation knobs 39a and 39b for bending the bending portion. By operating the bending operation knobs 39a and 39b, the bending portion 20 can be bent in the vertical and horizontal directions.

The air supply switch 4 is provided on the operation unit 12B.
0a, a water supply switch 40b, a suction switch 41, and function switches 48a, 48b, 48c for photographing and the like are provided. By operating the respective switches, air / water supply, suction, photography, and the like can be performed.

Further, an air supply switch 40 is provided on the operation unit 12B.
As shown in FIG. 3, the forceps raising switch 4
2, 43 are provided so that the forceps raising base 53 can be raised or rotated in a direction to lie down in accordance with the operation of these switches 42, 43. The endoscope 2B has a watertight structure.

In this embodiment, as will be described below, a forceps raising base (also simply referred to as a raising table) 53 on the cover 2A side, a rotation supporting mechanism for rotatably supporting the raising table 53, and this rotation supporting mechanism A structure that can be watertightly coupled to a rotation driving force generating mechanism provided on the endoscope 2B side for the cover,
The forceps raising angle can be increased. Further, by providing the raising stand 53 on the side of the cover 2A, the structure is less likely to damage the forceps channel when raising the forceps.

As shown in FIG. 5, a raising stand 53 is provided in the forceps outlet 30 formed on the side of the cover distal end 19A opposite to the side where the distal end 19B is stored. As shown in FIG. 6, a rotating shaft 54 extending in a direction perpendicular to the axial direction (perpendicular to the paper) of the insertion portion is fixed to the raising table 53 by, for example, a method such as bonding or soldering.

Further, the rotating shaft 54 is connected to the front end 19 of the cover.
A, and projects into the endoscope insertion channel 34 via a pivot shaft hole 55 and a watertight packing 56 provided so as to penetrate the partition wall 50 for isolating the forceps outlet 30 and the endoscope insertion channel 34, A gear 57 is fixed to the protruding tip portion. Also, at this time, all the fitting portions of the cover distal end portion 19A and the watertight packing 56 are adhered,
Watertightly bonded so that water does not leak from the rotation shaft hole 55.

On the other hand, the distal end 19B of the cover endoscope 2B
As shown in FIG. 4, the shaft 5
8 protrudes, and a gear 59 is fixed to a tip portion thereof. The other end of the shaft 58 is provided in the distal end portion 19B, and is connected to an electric motor 60 (see FIG. 7) that generates a driving force for rotating the elevator 53.

The projecting position of the shaft 58 is as shown in FIG.
The gear 57 and the gear 59 are provided at positions where the gear 57 and the gear 59 are engaged when the cover endoscope 2B is inserted into the insertion portion cover portion 11A. Here, the gear 5 7 when the distal end portion 19B of inserting the endoscope 2B cover the insertion cover unit 11A, the groove 61 for avoiding interference with the front end portion 19 is provided.

Therefore, when the electric motor 60 is rotated after inserting the cover endoscope 2B into the insertion portion cover portion 11A,
As shown in FIG. 8, together with the rotation, the elevator 53 also rotates about the rotation shaft 54.

Since the dirt inside the forceps outlet 30 does not enter the endoscope insertion channel 34 due to the watertight packing 56, the inside of the channel 34 is not contaminated.
At this time, the rotation of the electric motor 60 is controlled by the operation unit 12B.
The raising table 53 is rotated in the Up direction or the Down direction in accordance with the operation of the forceps raising switches 42 and 43 shown in FIG.

Further, as shown in FIG.
Stoppers 64 and 65 are provided, and by contacting the stoppers, the rotation angle of the elevator 53 is regulated. Here, a control method of the electric motor 60 will be described with reference to FIGS.

The forceps raising switches 42 and 43 provided on the operation section 12B are connected to an interface 66, which is connected to a control circuit 67, and the control circuit 67 is connected to a drive circuit 68. The electric motor 60 is connected to the drive circuit 68.

Outputs of two systems A and B are obtained from the interface 66 in accordance with the operation of the switches 42 and 43. At this time, the outputs A and B take values of "H" level and "L" level, respectively. Further, based on the values of A and B, an output of "L" level or "H" level is obtained from C and D by the control circuit 67 as shown in FIG. At this time, the output from C outputs a signal for determining the rotation direction of normal rotation and the reverse rotation, and the output from D outputs a signal for switching ON and OFF.

[0044] Thus, the drive circuit 68, C = time in Up direction when the H and D = H in the Down direction when C = L and D = H in C = L and D = L respectively so as to stop the motor The motor 60 is rotated.

In this embodiment described above, the motor 60 for raising the forceps is housed on the cover endoscope 2B side.
The rotational driving force of the motor 60 penetrates the partition wall 50 that separates the endoscope insertion channel 34 and the forceps outlet 30,
The forceps are transmitted to the raising table 53 on the side of the cover 2A via the rotating shaft 54 attached in a watertight manner. Therefore, when used for endoscopic inspection, the forceps itself is raised by the raising table 53. Like that. As a result, a sufficient forceps elevating angle is obtained, and a forceps elevating device with a low risk of damaging the forceps channel when erecting the forceps is realized.

Further, when used for endoscopic examination, even if dirt or the like adheres to the raising stand 53, the raising stand 53 is discarded together with the cover 2A, and the side of the cover endoscope 2B which is watertightly isolated. Is not affected by pollution.

FIG. 11 shows a main part of a second embodiment of the present invention. This embodiment is different from the first embodiment only in the driving means for rotating the elevator 53, and therefore, the same components are denoted by the same reference numerals and description thereof is omitted. As shown in FIG. 11, a pulley 1 instead of a motor 60 is provided at the base end of a shaft 58 having a gear 59 fixed to a tip end projecting from the tip end 19B.
20 is fixed.

Further, a forceps raising wire 121 is fixed at a position shifted in the radial direction from the center of the pulley 120. The forceps raising wire 121 passes through the insertion portion 11B and is provided on an operation unit (not shown). The distal end portion 19 is connected to the forceps raising operation means and is operated by operating the operation means.
It is configured to advance and retreat in the axial direction of.

Accordingly, when the pulley 120 is rotated by operating the forceps raising operation means to move the forceps raising wire 121 back and forth, the gear 59 can be rotated via the shaft 58 (as indicated by the arrow in the figure). Therefore, as shown in FIG. 8, the elevator 53 can be rotated about the rotation shaft 54. The effect of this embodiment is almost the same as that of the first embodiment.

Next, a third embodiment of the present invention will be described with reference to FIGS. This embodiment differs from the first embodiment only in that the shape of the cover and the endoscope for the cover is partially different. Therefore, the same components are denoted by the same reference numerals and the description thereof is omitted. FIG. 12 shows a cover tip portion 70 of the cover 2A in this embodiment.

As shown in FIG. 12, the forceps outlet 30 extends from the distal end of the endoscope insertion channel 34 to the distal end side of the cover distal end portion 70, as shown in FIG.
4 is separated from the forceps outlet 30 via a partition 71 made of a thin and stretchable polymer material, for example, urethane.

As shown in an enlarged view in FIG. 13, a raising stand 53 is rotatably attached to the cover tip 70 via a rotating shaft 72 in the forceps outlet 30. Further, an elevator operating member 73 is rotatably attached to the elevator 53 by, for example, swaging. A magnet 74 is fixed to the end of the magnet 74, and the magnet 74 is normally located near the partition 71.

FIG. 14 shows the distal end portion 7 of the cover endoscope 2B.
5 is shown. A hole 76 is provided in the distal end portion 75, and this hole 7
6, a forceps raising wire 77 extends. The forceps raising wire 77 is passed through the insertion portion, and the forceps raising knob provided in the operation unit, not shown, it is connected to the forceps raiser operating means comprising a link, the tip portion by operating the operation means It is configured to move back and forth in the axial direction of 75. A magnet 78 is fixed to the tip of the wire 77. The magnet 78 has a polarity different from the magnet 74 provided at the tip of the elevator base operating member 73 (e.g., 7
If 4 is S pole, 78 is N pole).

When the distal end portion 75 of the cover endoscope 2B thus configured is inserted into the cover distal end portion 70, the forceps raising wire 77 and the raising stand operating member 73 are provided at the respective distal ends. The magnets 78 and 74 are connected by the attracting action. Therefore, by operating the forceps raising operation means provided in the operation unit to advance and retract the forceps raising wire 77,
As shown in FIG. 15, the raising stand 53 rotates around a rotation shaft 72.

At this time, the partition wall 71 is thin, for example, 0.1 to 0.1.
Since it is made of a polymer material that can be stretched about 2 mm,
Since the wire 77 is not damaged even if it is advanced or retracted, no dirt flows into the endoscope insertion channel 34 from the forceps outlet 30 and the inside of the endoscope insertion channel 34 is not contaminated. The third embodiment has substantially the same effects as the second embodiment.

In the above description, the elevator operating member 73 is one
As shown in FIG. 16, the rod-shaped first
Operation member 7 composed of member 73a and second member 73b
3c may be used. At this time, the fixing portion 73d of the first member 73a and the second member 73b, the operation member 73b, and the elevator 53
If at least one of the fixing portions 73e is rotatably fixed, the other may be fixed and fixed by, for example, a method such as bonding or soldering. Of course the fixed part 7
Both 3d and 73e may be rotatably fixed.

In the above description, the connecting means for connecting (connecting) the cover endoscope 2B and the cover 2A is composed of two members, both of which are magnets having different polarities. Similar effects can be obtained by using one of the magnets as the magnet and the other as a material attracted by a magnetic force such as iron.

Next, a fourth embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. This embodiment is different from the third embodiment in that
Since only the method of connecting the raising table operating member 73 and the forceps raising wire 77 is different, the same components are denoted by the same reference numerals and description thereof is omitted.

FIG. 17 shows a tip portion of the raising table operation member 73. The distal end portion has a convex portion 96 on the inner surface, and a cylindrical connecting member 97 having elasticity is fixed by means such as adhesion. FIG. 18 shows a tip portion of the forceps raising wire 77. A connecting member 97 is attached to the distal end portion of the forceps raising wire 77.
A groove 98 which engages with a convex portion 96 provided on the inner surface of the rim is fixed to a columnar connecting member 99 provided on the outer peripheral portion thereof by means such as adhesion or soldering.

Since the connecting members 97 and 99 have the above-mentioned configuration, they can be detachably fixed by utilizing the elasticity of the connecting member 97 as shown in FIG. Further, since the partition wall 71 provided at the tip of the cover is thin and elastic, the connecting members 97 and 99 can be detachably fixed to each other even through the partition wall 71 as shown in FIG. Here, the connecting member 97 provided on the cover side which is disposable for each case may be broken when the connecting member 97 is detached from the connecting member 99.

The connecting members 97, 9 thus constructed
The lifting table operation member 73 and the forceps raising wire 77 are connected via 9. Therefore, the present embodiment can also obtain the same operation and effect as the second embodiment.

Further, if at least one slit 99a as shown in FIG. 21 is provided in the connecting member 99 provided at the tip of the elevator operating member, deformation when attaching and detaching is facilitated, and the detachability is improved. I do. Further, in order to attach the raising stand 53 to the cover 2A, a configuration shown in FIGS.

As shown in FIG. 22, a guide groove 100 is provided on the inner wall portion of the cover distal end portion 70 in the forceps outlet 30 in the axial direction of the insertion portion cover portion 11A. On the other hand, as shown in FIG. 23, the raising table 53 is provided at a predetermined position in the forceps outlet 30 .
3 is provided at a position corresponding to the guide groove 100 when the protrusion 101 is engaged with the guide groove 100. When the raising stand 53 is attached to the forceps outlet 30 by utilizing the elasticity of the insertion portion cover 11A, the raising stand 53 is attached to the guide groove 1.
It is possible to smoothly move in the axial direction of the insertion portion cover 11A along the direction 00.

Here, the raising table operation member 73 attached to the raising table 53 and the connected forceps raising wire 77 are connected to each other.
By operating the forceps elevating operation means provided on the operation unit to move the elevating table 53 in the axial direction, the elevating table 53 also moves in the axial direction. As a result, as shown in FIG. 24, the angle of the treatment tool 102 protruding from the forceps outlet 30 with respect to the axis of the insertion portion cover portion 11A can be arbitrarily changed.

In the third and fourth embodiments, the lifting table operating member is connected to the forceps raising wire via a connecting member.
Although the operating means connected to the forceps raising wire is operated, the following configuration may be used.

A rod which is connected to an electric motor provided in a cover endoscope (not shown) and which is configured to advance and retreat in the axial direction of the insertion portion cover in response to operation of a control switch provided in an operation portion (not shown). and connecting the raising table operation member via the connecting member. At this time, the electric motor is controlled by a control unit (not shown) so as to rotate within the range of the movement amount of the elevator required for the function according to the switch operation.

In the case of endoscopic examination, for example, a tube is inserted into a bile duct through an endoscope channel for examination, and a contrast agent is injected into the bile duct from the tube, or the endoscopic examination is performed. A tube is inserted into a body cavity through a mirror channel, and a dye such as methylene blue is sprayed into the body cavity from the tube. The above-described inspection is similarly performed even in an inspection using an endoscope of an endoscope cover system.

On the other hand, when inserting the above-mentioned various liquid feeding tubes into the endoscope channel, they may be touched by dirty hands or may be used again without sufficient disinfection and sterilization. There was a risk of getting infected.

Therefore, in order to provide an endoscope of an endoscope cover type which can always use a clean liquid feeding tube, the cover of the present invention is configured as follows. As shown in FIG. 25, a forceps channel 181 and a liquid-feeding tube insertion channel 182 are provided in the insertion portion cover 180.

Then, the liquid feeding tube insertion channel 1
82 is provided with a stepped portion 183 having a large diameter at the tip end side. On the other hand, the sterilized liquid feeding tube 184 inserted into the channel 182 has the stepped portion 1.
A flange portion 185 is provided to abut on 83.

As shown in FIG. 26, the insertion portion cover 18
0 is provided with an endoscope operating portion fixing mouth portion 196 , and the fixing mouth portion 196 has a forceps insertion port 18 therein.
5. A liquid feeding tube insertion port 186 and an expansion tube mouth 187 are provided.

A flange 188 and a liquid inlet 189 having a diameter larger than that of the liquid feeding tube insertion port 186 are provided on the hand side of the liquid feeding tube 184.

The flange portion 188 is provided at an interval from the liquid feeding tube insertion port 186. The interval has a length (at least 30 mm) or more that allows the liquid feeding tube to advance and retreat at the time of inspection.

Further, after the liquid feeding tube 184 is inserted from the liquid feeding tube outlet 190 on the distal end side, the flange portion 188 and the liquid inlet 189 are fixed to the base end portion thereof by bonding or the like. 26 is assembled.

With the above configuration, the liquid sending tube 184 can move forward and backward by the distance required for the inspection, and
After assembling, the flange portions 185 and 188 provided on the liquid feeding tube respectively contact the step portion 183 and the liquid feeding tube insertion port 186, and the movement is regulated. I can't escape.

Therefore, since the liquid supply tube 184 is disposable for each case similarly to the insertion section cover 180, it is not contaminated and always has a clean liquid supply tube 1.
84 can be used.

In the above description, the liquid feeding tube insertion port 1
Flange part 1 that hits 86 and is restricted from moving
The same operation and effect can be obtained without the flange portion 188 if the liquid injection port body 189 hits the liquid feed tube insertion port 186 and the movement is restricted.

Further, as shown in FIG. 27, if each of the insertion portion cover portions 191 and the forceps channel 192 are provided with a sterilized liquid sending tube 193, the insertion portion cover portion 191 is provided.
At the same time as 91, the dispensing tube 193 can be disposable for each case, and the same effect can be obtained. In addition, since there is no need to provide a flange portion on the dispensing tube 193, manufacturing is easy and cost is reduced. Can be reduced.

Further, the forceps channel 192 has a sectional shape as shown in FIG. 28, and the liquid sending tube 193 is provided in a small diameter portion 195 set to be substantially the same as the outer diameter of the liquid sending tube 193. If this is done, the advance and retreat will be smooth and will not hinder the insertion of another forceps.

Incidentally, treatment using an endoscope has been widely performed in recent years. As one of these treatments, an intubation tube 1 having a total length of about several tens mm is passed through a channel of an endoscope through a stenotic lumen (for example, a bile duct).
10 is inserted, the stenosis site is released, and secretions remaining in the lumen are discharged (FIG. 29 (a),
(B)). The examination as described above is similarly performed in treatment using an endoscope of an endoscope cover system.

On the other hand, when the above-described treatment is performed,
Before the endoscope is inserted into the body cavity as shown in FIG. 3A, the intubation tube 110 is connected to the forceps channel 11 from the forceps outlet 30 provided with, for example, a raising stand 53 at the distal end of the endoscope.
30, and when it reaches the target site as shown in FIG. 30B, pushes out the tube 112 from the forceps insertion port 111 provided on the proximal side of the endoscope and places the tube 112 in the forceps channel 1.
Then, an operation of pushing out the intubation tube 110 is performed. In FIG. 30B, reference numeral 161 denotes an insertion portion cover.

In performing such a treatment, if the intubation tube 110 is inserted into the forceps channel 113 with a contaminated hand, the intubation tube 110 may also be contaminated and cause infection. To prevent infection,
If a sterile glove is used when inserting the intubation tube into the forceps channel, there is a problem that the preparation takes time.

Therefore, in order to achieve the object of providing an endoscope of an endoscope cover type which is easy to prepare and can always use a clean intubation tube, the following configuration may be adopted. .

As shown in FIG.
A sterilized intubation tube 122 is provided on the distal end side of the forceps channel 121 provided at the end. In the forceps channel 121, on the side closer to the intubation tube 122 than the intubation tube 122, sterilized and extended to the outside of the insertion portion cover portion 120 through the forceps insertion port 124 provided in the endoscope operation portion fixing mouth portion 123. And an extruded tube 125. With such a configuration, a clean intubation tube can always be used, and preparation before treatment does not require the use of sterile gloves or the like and is simple.

As shown in FIG. 32, the forceps channel 12
1, a sterilized intubation tube 122 on the distal side and a sterilized tube 12 on the proximal side of the intubation tube 122.
6 may be provided. With such a configuration, even if the intubation tube 122 is inserted into the body cavity of the patient using the unclean push tube 127, the intubation tube 122 does not touch the unclean material, so the intubation tube 122 is always clean.
22 can be used, and preparation before treatment is simple without using sterile gloves or the like.

In the above-described embodiment, an electronic endoscope type cover endoscope has been described. However, an optical type cover endoscope (observation through an eyepiece) using an image guide instead of an image pickup device is used. In other words, the present invention can be applied to the cover fiberscope in almost the same manner.

The endoscope used together with the above-mentioned cover is not limited to the endoscope for the cover, but may be used without being covered with the cover, that is, an endoscope used naked. .

[0088]

[Effect of the invention] According to the invention described above, the channel
Channel with Ending Cover on Endoscope Cover with Flannel and Endoscope
Provide a partition wall to isolate the mirror insertion channel from
A driver for raising the elevator to the mirror cover endoscope
Steps should be provided, and the elevator and the drive
By providing a connecting means for connecting the step , the forceps itself
Is raised by a forceps raising stand. This allows the endoscope camera
While ensuring the water tightness of the bar, a sufficient forceps
Is, it is possible to endoscopic device in with the channel endoscope <br/> cover scheme with forceps raising device can be reduced the risk of damaging the forceps channel at the upper forceps.

[Brief description of the drawings]

FIG. 1 is an overall view showing a configuration of a cover-type endoscope apparatus provided with a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a configuration of a cover-type endoscope according to the first embodiment.

FIG. 3 is a side view showing the entire endoscope for a cover.

FIG. 4 is a perspective view showing a distal end portion of the endoscope for a cover.

FIG. 5 is a perspective view showing a tip portion of a cover.

FIG. 6 is a sectional view of FIG. 5;

FIG. 7 is a perspective view showing a state in which a gear on the cover endoscope side and a gear on the cover side are engaged.

FIG. 8 is a longitudinal sectional view of FIG. 5;

FIG. 9 is a block diagram showing a configuration of a motor control system.

FIG. 10 is a flowchart showing the control contents of FIG. 9;

FIG. 11 is a perspective view showing a main part in a second embodiment of the present invention.

FIG. 12 is a perspective view showing a tip portion of a cover according to a third embodiment of the present invention.

FIG. 13 is an enlarged perspective view showing a part of FIG. 12;

FIG. 14 is a perspective view showing a distal end portion of the endoscope for a cover.

FIG. 15 is an operation explanatory diagram of the third embodiment.

FIG. 16 is a perspective view showing an elevator operating member according to a modification of the third embodiment.

FIG. 17 is a cross-sectional view showing the tip of the elevator operating member according to the fourth embodiment of the present invention.

FIG. 18 is a side view showing the distal end portion of the forceps raising wire.

FIG. 19 is a cross-sectional view showing a state in which the distal end of the elevator operating member and the distal end of the forceps raising wire are connected.

FIG. 20 is a cross-sectional view showing a state in which the distal end of the elevator operating member and the distal end of the forceps raising wire are connected via a partition.

FIG. 21 is a perspective view showing a connecting member provided with a slit.

FIG. 22 is a perspective view showing a cover tip provided with a guide groove.

FIG. 23 is a perspective view showing a raising stand provided with a convex shape.

FIG. 24 is an explanatory view showing that a raising table can be raised by an advance / retreat operation of a forceps raising wire.

FIG. 25 is a cross-sectional view showing an insertion portion cover provided with a liquid feeding tube insertion channel.

FIG. 26 is a side view showing the configuration on the hand side in FIG. 25;

FIG. 27 is a cross-sectional view showing an insertion portion cover portion provided with a liquid feeding tube in the forceps channel.

FIG. 28 is a cross-sectional view of the forceps channel of FIG. 27.

FIG. 29 is an explanatory view showing a stenosis part and an intubation tube interposed in the stenosis part.

FIG. 30 is an explanatory diagram of an operation of placing an intubation tube.

FIG. 31 is an explanatory diagram of an operation of placing an intubation tube using an extrusion tube.

FIG. 32 is an explanatory diagram of an operation of placing an intubation tube using a sterilized tube.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cover type endoscope apparatus 2 ... Cover type endoscope 2A ... Cover 2B ... Cover endoscope 3 ... Light source device 4 ... Video processor 5 ... Fluid control device 6 ... Cover extender 7 ... Monitor 8 ... Cart 10 ... Cover holder 11A ... Insertion section cover section 11B ... Insertion section 12A ... Operation section cover section 12B ... Operation section 13A ... Universal cord cover section 13B ... Universal cord 14 ... Connector 17A ... Insert section cover outer shell 18 ... Inner Mouth portion for fixing the endoscope operation section 19A: Cover tip 19B ... Tip 20 ... Bending portion 23A ... Cover observation window 23B ... Observation window 24 ... Objective optical system 25 ... CCD 27a ... Air supply line 27b ... Water supply line 28 ... suction line 30 ... forceps outlet 31 ... forceps insertion port 32 ... expansion tube 33 ... expansion tube mouth 34 ... endoscope insertion channel 35 ... open Parts 42, 43 ... forceps raising switch 50 ... partition wall 53 ... elevator 54 ... pivot shaft 55 ... Kaidojikuana 56 ... packing 57,59 ... gear 58 ... shaft 60 ... electric motor 61 ... groove

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside O-Linpus Optical Industry Co., Ltd. (72) Akira Suzuki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Minoru Yamazaki, creator Minoru Yamazaki 2-43-2, Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Osamu Mizuta 2-43-2, Hatagaya, Shibuya-ku, Tokyo No. O Olympus Optical Co., Ltd. (72) Inventor Takahiro Kishi 2-43-2, Hatagaya, Shibuya-ku, Tokyo O Olympus Optical Co., Ltd. (56) References: 58) Field surveyed (Int.Cl. ⁶ , DB name) A61B 1/00-1/06

Claims (1)

(57) [Scope of request for utility model registration] A channel having an elevating table at a tip thereof;
Endoscope that inserts the end of the insertion section of the endoscope in a watertight manner
An endoscope cover with a channel having an insertion channel ;
An endoscope device of an endoscope cover type with a channel including an endoscope for an endoscope cover inserted into the endoscope insertion channel, wherein the channel having the raising stand and the endoscope insertion channel are provided.
A partition wall for water-tightly isolating the panel and the endoscope for the endoscope cover;
An endoscope device with an endoscope cover system with a channel, comprising: a driving means for performing an upward operation ; and a connecting means for connecting the raising table and the driving means in a watertight manner via the partition. .