JPH06245894A - Endoscope cover type endoscope system - Google Patents

Abstract

PURPOSE:To eliminate futility in the formation and to reduce the instrument size retaining at least one of feeding function for air or water and the expanding function of the endoscope inserting channel. CONSTITUTION:When attaching or detaching an inserting part 14 of an endoscope 4 for cover into a cover part 22 of an inserting part, one air feeding pump to expand the inserting part cover part and another air feeding pump for air and water feeding are made commonly used to eliminate futility in the formation and to reduce the instrument size retaining the air and water feeding function and the expanding function of the endoscope inserting channel.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope system of a cover type having a cover endoscope capable of supplying air and water.

[0002]

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

After the endoscope is used in the body cavity of a patient, the endoscope is cleaned and disinfected, but this cleaning and disinfection takes a very long time. Therefore, in recent years, when performing an endoscopic examination, a disposable endoscope cover type endoscope has been proposed instead of the conventional reusable endoscope.

The endoscope of the endoscope cover type is composed of a combination of an endoscope cover for covering the outer periphery of the endoscope insertion portion and the like and a cover endoscope to be inserted into the endoscope cover. . Examples of endoscopes of the endoscope cover system include those described in Japanese Patent Publication No. 2-54734 and USP 3,162,190.

[0005] In a cover endoscope to which the endoscope cover is attached, generally, an image pickup system or an observation optical system and a light guide fiber are provided in an insertion portion.

Here, the treatment instrument channel, the air supply / water supply pipe, and the like may be contaminated with body fluid and the like, and since they are long and slender, cleaning and disinfection takes time. Therefore, there are some endoscope covers equipped with a treatment instrument channel, open-ended pipes such as an air / water supply pipe.

[0007] The insertion portion of the endoscope for the endoscope is cleaned and sterilized in advance. Then, the endoscope is inserted into the body cavity of the patient with the endoscope cover covering the insertion portion of the endoscope and the like, and after use, the endoscope cover is removed and discarded. As described above, by disposing the endoscope cover for each patient (one bed example), it becomes unnecessary to clean and disinfect the cover endoscope. Further, the cover endoscope can be continuously used without re-cleaning and re-disinfecting.

The endoscope cover is generally divided into members for covering the insertion portion, the operation portion, the universal cord and the like of the endoscope. Of the above-mentioned members, the insertion portion cover portion covers the endoscope insertion portion, and has, for example, an endoscope insertion channel and conduits for air supply / water supply / suction.

The air and water are sent for the following purposes. A transparent window is disposed at the tip of the insertion section cover section so as to face the observation window of the endoscope. Since dirt or the like adheres to the window during the inspection, water is sent toward the window to remove it. After the water is sent, air is sent in order to quickly remove the water drops on the window. In addition, air may be supplied so that the endoscope can maintain an observable distance from the inner wall of the body cavity.

The air / water pump for air / water supply is generally provided in a fluid control device for controlling air / water supply or a light source device for supplying illumination light. is there. This follows the configuration of a conventional endoscope without a cover.

On the other hand, the insertion portion cover portion is subjected to the following processing in order to facilitate the attachment and detachment of the endoscope insertion portion. First, the extension tube cap communicating with the endoscope insertion channel provided in the insertion portion cover and the dilator having an air supply source for expansion are connected and connected via the extension tube. Next, the inside of the endoscope insertion channel is pressurized by the air supply source provided in the expander to expand the endoscope insertion channel. Since the endoscope insertion channel is expanded, the insertion portion of the cover endoscope can be easily inserted into the same channel.

[0012]

In the endoscope system using the cover endoscope, the cover endoscope and the cover having a different configuration from the conventional one are based on the conventional coverless endoscope system. The fact is that studies have been made and designs have been made.

Therefore, in addition to the conventional air / water supply structure, a structure for expanding an endoscope insertion channel has been proposed. In addition to the conventional fluid control device, a new expander or the like is additionally provided. The body composition has been added.

However, in the whole system using the endoscope of the endoscope cover system, the construction is wasteful and the number of devices is increased, resulting in an unnecessary enlargement of the system. .

The present invention has been made in view of the above circumstances, and has at least one function of air supply or water supply and an expansion function of an endoscope insertion channel, and at the same time, eliminates waste in the structure. An object of the present invention is to provide an endoscope system of an endoscope cover system that can downsize the device.

[0016]

In the endoscope system of the endoscope cover type of the present invention, when the insertion portion of the cover endoscope is attached to or detached from the insertion portion cover portion, the insertion portion is inserted. By making the air supply source used for expanding the cover part and the air supply source used for at least one of the air supply and the water supply common, the function of at least one of the air supply and the water supply, and insertion of the endoscope. In addition to retaining the channel expansion function, the system is not wasted and the device is downsized.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 11 relate to a first embodiment of the present invention, FIG. 1 is an overall external view of an endoscope system for connecting a cover endoscope, and FIG. 2 is a cover for which an insertion portion cover portion is mounted. A side view of the endoscope, FIG. 3 is a side view showing another configuration relating to the connecting pipe and the relay pipe, FIG. 4 is a side view showing yet another configuration relating to the connecting pipe and the relay pipe, and FIG. 5 is a diagram showing the configuration of the suction system. Side view, FIG. 6 is a side view showing another configuration of the suction system, FIG. 7 is a diagram of the suction system, and FIG. 8 is a front view, a side cross section, and a perspective view of the distal end side of the cover-type endoscope, and FIG. 11 is a front view and a cross-sectional view of the tip of the cover-type endoscope, and FIG. 10 is a front-side external view showing the configuration of the fluid control device and the conduit, FIG.
[Fig. 4] is a pipeline diagram relating to air supply, water supply, suction, and expansion.

An endoscope system 1 shown in FIG. 1 is a device to which a channel-covered endoscope cover type endoscope (hereinafter referred to as a cover type endoscope) 2 can be detachably connected.

The cover-type endoscope 2 includes an endoscope cover with a channel (hereinafter abbreviated as a cover) 3, and an endoscope for an endoscope cover with a channel (hereinafter abbreviated as a cover endoscope) 4. It consists of a combination with. The cover endoscope 2 is of an electronic type.

The cover 3 is a cover endoscope 4.
It covers the insertion part of the endoscope and makes cleaning and disinfection of the endoscope unnecessary after the examination.

The endoscope system 1 includes the cover-type endoscope 2, a cart 5 in which various peripheral devices connected to the cover-type endoscope 2 are installed, and the cover-type endoscope 2 And a cover holder 6 for holding.

The light source device 7, the video processor 8, and the fluid control device 9 are housed in the cart 5 in which the peripheral equipment shown in FIG. 1 is housed. A storage space 10 is provided in the cart 5.

The light source device 7 includes the cover-type endoscope 2
The illumination light is supplied to the cover endoscope 4.
The video processor 8 is connected to the electronic cover endoscope 4, converts an electric signal from the endoscope into a standard video signal, and outputs the standard video signal to a monitor (not shown). The monitor receives the video signal and displays an endoscopic image.

Further, the fluid control device 9 supplies air, water, and water through a pipe line, which will be described later, provided in the cover 3.
It controls the channel expansion and the like. For this reason,
The fluid control device 9 is provided with an air supply source for air supply, water supply, and expansion, which will be described later, and a conduit connected to the air supply source is controlled to be opened and closed by a solenoid valve. There is.
That is, the fluid control device 9 has a function of an endoscope cover dilator with a channel (abbreviated as dilator) in addition to the air / water feeding function.

As shown in FIG. 1, the cover endoscope 4 includes an operating portion 12, a universal cord 13 extending from a side portion of the operating portion 12, and an insertion portion connected to the operating portion 12. It is composed of 14 and. The insertion portion 14 of the cover endoscope 4 has a flexible tube portion 15 and a bendable bending portion 16 in order from the proximal end side of the operation portion 12 toward the distal end.
And a hard tip portion 17.

Here, FIG. 8A shows the insertion portion cover portion 22.
FIG. 8B is a front view of the tip portion of FIG.
It is a C line sectional view. In addition, FIG. 8C is a distal end side perspective view of the cover endoscope 4. It should be noted that FIG. 8B is a side cross-section including the cover endoscope 4 with the insertion-portion cover portion 22 attached.

The insertion portion 14 of the cover endoscope 4 has a small diameter and is formed in a D-shaped cross section. Further, as shown in FIG. 8C, left and right illumination optical systems 31a and 31b and an objective optical system 32 are arranged at the tip portion 17 of the cover endoscope 4. The objective optical system 32 is arranged between the left and right illumination optical systems 31a and 31b.
The insertion portion 14 of the endoscope 4 may have a cylindrical cross section.

At the rear ends of the illumination optical systems 31a and 31b, light emitting ends of light guide fibers (not shown) are respectively arranged, and these light guide fibers are inserted into the insertion portion 1.
4, the operation portion 12 and the universal cord 13 are inserted.

A connector 18 is provided at the end of the universal cord 13, and the connector 18 is detachably connected to the connector receiving portion 19 of the light source device 7. Then, the illumination light is supplied from the light source device 7 to the incident end of each of the light guide fibers.

As shown in FIG. 8B, a solid-state image pickup element 20 for converting an incident optical image into an electric signal is arranged at the rear end of the objective optical system 32. The electric signal output from the solid-state image sensor 20 is passed through a signal code 21 extending from the side portion of the connector 18 shown in FIG.
It is adapted to be input to the video processor 8.

One end of the signal code 21 is in the video processor 8, the other end is in the receiving portion 18a of the connector 18,
Each is detachably connected.

As shown in FIG. 1, the endoscope operating section 12
Includes the angle knob 33 and the air / water control switch 3
4, air / water switch 35, suction control switch 5
0, an extended function control switch 51 and the like are provided.

The air, water, and suction of the fluid control device 9
The expansion control is performed by signals from the switches provided on the operation unit 12. Each of the switches is connected to the fluid control device 9 via the universal cord 13, the signal cord 21, and the video processor 8 and further via a connection cord (not shown) provided on the back side of the video processor 8 and the fluid control device 9. Various signals are input. A control unit (not shown) provided in the fluid control device 9 controls an electromagnetic valve described later according to the various signals.

As shown in FIG. 1, the cover 3 comprises an insertion section cover section 22, an operation section cover section 23, and a universal cord cover section 24. The insertion portion cover portion 22 is configured to connect and connect three pipe lines, which will be described later, and the fluid control device 9 via a relay pipe 29.

The insertion portion cover portion 22 is for isolating the insertion portion 14 of the cover endoscope 4 from the external environment. The insertion portion cover portion 22 is formed in an elongated shape, and a mouth portion for fixing the endoscope operation portion (hereinafter, abbreviated as a mouth portion) 22a and a tip portion 22b on the near side are made of a hard material such as resin. Has been formed. In addition, the insertion portion cover portion 2
A space between the second mouth portion 22a and the tip portion 22b is covered with an insertion portion cover outer cover 22c formed of a flexible material. The insertion portion cover outer cover 22c is formed to have a thin wall thickness.

Further, the insertion portion cover portion 22 has an endoscope insertion channel 25 through which the insertion portion 14 can be inserted, an air supply pipe 26, a water supply pipe 27, and a suction pipe 28 formed therein. (See FIGS. 8A and 8B).

On the proximal end side of the endoscope insertion channel 25, an opening portion 25a for inserting the insertion portion 14 is formed in the mouth portion 22a as shown in FIG. The opening 25a of the endoscope insertion channel 25 is adapted to be fitted in an airtight manner on the proximal end side of the endoscope operation section 12. Further, the endoscope insertion channel 25 has the distal end portion 22b.
Closed at the insertion portion 14 of the cover endoscope 4.
Is airtightly separated from the outside environment.

As shown in FIG. 8A, a transparent illumination window 41 is provided at the distal end portion 22b of the insertion portion cover portion 22 at the distal end of the endoscope insertion channel 25 shown in FIG. 8A.
a, 41b and an observation window 42 are provided. The illumination windows 41a and 41b and the observation window 42 are arranged at positions facing the illumination optical systems 31a and 31b and the objective optical system 32 of the cover endoscope 4, respectively.

Further, the tip portion 2 of the insertion portion cover portion 22.
As shown in FIG. 8B, 2b forms a step 22d protruding from the observation window 42 and the like. As shown in FIG. 8 (a), the step portion 22d of the tip portion 22b is provided on the side portion thereof.
An air supply nozzle 43 opening toward the observation window 42 and a water supply nozzle 44 are formed. Further, the step portion 22d of the tip portion 22b has an opening 45 formed in the front surface thereof. The air supply and water supply nozzles 43 and 44 are connected to and connected to the air supply pipe 26 and the water supply pipe 27, respectively. The opening 45 communicates with and is connected to the suction pipe 28.

Further, the air supply pipe 26, the water supply pipe 27, and the suction pipe 28 are provided in the pipe line storage connecting pipe 30 extending from the mouth portion 22a shown in FIGS. 1 and 2 toward the hand side. It has been inserted. The air supply pipe 26, the water supply pipe 27, and the suction pipe 28 are at the proximal end of the pipe line connection pipe 30.
Each is open.

As shown in FIG. 1, the air supply pipe 26 is connected to and connected to an air supply source (not shown) of the fluid control device 9. The water supply pipe 27 is connected to the air supply source via a water supply tank 33 which is a water supply source. Further, the suction pipe 28 is connected to and connected to a suction bin and a suction source which will be described later.

The mouth portion 22a has a side portion, as shown in FIG.
As shown in, the treatment tool insertion port 36 and the extension tube mouth body 37 are projected. The expansion tube mouth body 37,
An internal conduit communicates with the endoscope insertion channel 25. An expansion tube, which will be described later, connected to the fluid control device 9 is detachably connected to the expansion tube mouth 37.

The treatment instrument insertion opening 36 projects rearward in the axial direction of the insertion portion cover portion 22. The internal conduit of the treatment instrument insertion port 36 is open at the projecting end and communicates with the suction conduit 28 at the other end. That is, the suction line 2
The distal end side 8 also serves as the conduit of the treatment instrument channel. Therefore, the opening 45 serves not only as a suction port but also as an outlet for the treatment tool.

As shown in FIG. 8B, the suction pipe line 2
8 has an inclination angle with respect to the axial direction of the insertion portion so that the extension line of the central axis of the opening 45 and the extension line of the optical axis of the observation window 42 intersect at a predetermined position at the tip portion 22a. Has been formed. In addition, the objective optical system 32 of the endoscope
And the opening 45 are arranged so as to be as close to each other as possible.

In the above structure, when the treatment tool is projected from the opening 45, the treatment tool is directed toward the center of the visual field, so that the treatment is facilitated.

Further, the chamfered R (R) diameter of the tip portion 22a is changed according to the distance from the side wall of the tip to the built-in object. For example, the distance indicated by reference sign g in FIG. 8A is the distance from the side wall of the tip portion 22a to the built-in object (opening 45). When the distance g is large, that is, where there is a sufficient space, the diameter of the chamfered R of the tip portion 22a is large as shown by reference numeral e in FIG. 8B, for example, 1 to 5 mm.
It is formed in the place. On the other hand, the distance indicated by the symbol h in FIG. 8A is the distance from the side wall of the tip portion 22a to the built-in object (window 42). When the distance h is short, that is, when there is no space, the diameter of the chamfered R of the tip portion 22a is set to be small, as indicated by the symbol f in FIG. 8B.

Generally, if the diameter of the chamfer R at the tip is increased, the tip becomes thicker, and if the diameter of R is too small, the risk of damaging the body cavity wall increases. On the other hand, with the above configuration, the tip 2
Without increasing the diameter of 2a, the diameter of the chamfer R at the tip portion at most positions except a part can be increased.
Therefore, according to the above configuration, it is possible to reduce the risk of damaging the body cavity wall while maintaining the small diameter of the insertion portion.

FIG. 9B is a front end portion 2 shown in FIG. 9A.
It is the DD sectional view taken on the line 2a. Incidentally, FIG. 9 (b)
Is a cross section taken along a plane including the air supply conduit 26 and the air supply nozzle 43.

Reference numeral j in FIG. 9 represents the viewing angle of the cover endoscope 4. The air supply nozzle 43 is provided at a position that does not enter the viewing angle j. Similarly, the water supply nozzle 44 is also provided at a position that does not fall within the viewing angle j. That is, regarding the formation position and height of the step of the step portion 22d,
It is formed in consideration of the relationship with the viewing angle j.
Therefore, a good visual field can be obtained without being obstructed by the air supply and water supply nozzles 43 and 44.

Further, the cover holder 6 shown in FIG.
When the insertion section cover 22 is attached to the cover endoscope 4,
The arm 6a holds the insertion portion cover portion 22. As shown in FIG. 1, the mouth portion 22a of the insertion portion cover portion 22 has a holding groove 22e on its side portion.
Are formed. The arm 6 is inserted into the holding groove 22e.
By fitting a, the endoscope 4 can be held without touching the insertion portion cover portion 22 by hand, which is hygienic. In addition, the operation becomes easy.

As described above, in the tip portion 17 of the cover endoscope 4, the objective optical system 32 is arranged between the left and right illumination optical systems 31a and 31b. With this configuration, it is possible to eliminate the unevenness of the illumination in the visual field during the inspection. Further, even when the treatment tool is projected from the opening (treatment tool outlet) 45 through the treatment tool insertion port 36 and the suction conduit 28, it is possible to eliminate the shadow of the treatment tool by illuminating from both sides. And the treatment becomes easier.

Next, among the covers 3, the operation section cover section 23 and the universal cord cover section 2 shown in FIG.
4 will be described.

The operation portion cover portion 23 of the cover 3 covers the operation portion 12 of the cover endoscope 4 and the conduit storage connection pipe 30. Further, the universal cord cover portion 24 of the cover 3 covers the universal cord 13 of the cover endoscope 4, the relay pipe 29, and the like. Then, the cover endoscope 4 is used for the inspection in a state in which the cover 3 is entirely attached and is covered in a watertight manner.

Next, the material of the cover 3 will be described. Of the cover 3, the insertion portion cover portion 22 that covers the endoscope insertion portion 14 is inserted into the body cavity.
Therefore, the flexible insertion portion cover portion 22 is made of a slippery thin material such as Teflon or polyurethane, or various lubricated materials. That is, the insertion portion cover portion 22 is made of a material having good insertability into the body cavity.

On the other hand, the operation portion cover portion 23 which is not inserted into the body cavity is made of a non-slip material, such as vinyl chloride, and at least the friction coefficient of each cover is 9 <10.

With the above structure, the insertion portion cover portion 22 can be easily inserted, while the operation portion cover portion 23 is less likely to slip, so that it can be prevented from falling during the operation and is safe. Further, unnecessary contamination of the cover 3 is also prevented.

The pipe line storage connection pipe 30 of the insertion portion cover 22 is detachably connected to its proximal end and one end of the relay pipe 29.

As shown in FIG. 1, the relay pipe 29 has an air feed relay pipe 38, a water feed relay pipe 39, and a suction relay pipe 40 inserted therein.

By connecting the relay pipe 29 and the pipe line storage connection pipe 30, the pipe lines 26, 27, 30 and the pipe lines 38, 39, 40 are communicated with each other.

FIG. 2A shows the side surface of the insertion section cover 22 to which the relay tube 29 is attached and the cover endoscope 4 is attached. As shown in FIG. 2B, which is a cross-sectional view taken along the line AA of FIG. 2B, the universal cord 13 has a modified cross section. That is, the universal cord 13 has the concave groove portion 46 formed in the axial direction thereof. As shown in FIG. 2A, the relay pipe 2 is formed in the groove 46.
9 is adapted to fit.

The relay tube and the universal cord may be fixed not only by the structure shown in FIG. 2 but also by the structure shown in FIG. 3 or 4.

As another configuration example, the universal cord 13 'shown in FIG. 3 (a) has a circular cross section. The universal cord 13 'is provided with a fixture 47 for fixing the relay pipe 29. As shown in FIG. 3B, which is a sectional view taken along the line BB of FIG. 3A, the fixture 47 has a half ring for fitting the cord 13 ′ and the conduits 38, 39, 40. , Are formed so as to project respectively.

With the above structure, the relay pipe 29 can be fixed to the universal cord 13 (or 13 ').
The work for attaching the universal cord cover portion 24 to the cord 13 (or 13 ') becomes easy. in addition,
In the above configuration, the cord 13 (or 13 ') and the conduit are not separated, so that the operation of the endoscope becomes easy at the time of inspection. In other words, when operating the endoscope, the conduit and cord do not interfere with the operation.

Alternatively, the length of the conduit storage connection pipe 30 provided in the insertion portion cover portion 22 may be shortened.
In other words, the connection position with the relay pipe 29 is not limited to the vicinity of the cord 13 as shown in FIG. 2 but to the vicinity of the operation unit 12 as shown in FIG. Further, the connection position may be in the vicinity of the extension tube mouth 37.

Further, each conduit forming the relay pipe 29 is made of a material that is less likely to buckle than the universal cord 13, that is, has high durability and is soft. Examples of this material include a soft urethane tube, a vinyl chloride tube, a Teflon tube, or a silicone tube.

By using the above-mentioned material, even when the relay tube 29 is fixed to the universal cord 13, it is not possible to prevent operations such as twisting and pushing / pulling operations of the endoscope at the time of inspection. Further, the relay pipe 2
Since each of the conduits forming 9 has higher durability than the universal cord 13, it is possible to prevent the conduits from being crushed during the inspection.
Therefore, it is possible to prevent defective air supply, water supply, and suction operations.

As shown in FIG. 2, an index 48, for example, a color ring, which indicates a treatment tool that can be used for the cover endoscope, is provided on the side of the treatment tool insertion port 36.

Here, there are various types of treatment tools, and color markings are given according to their types. And
The color of the index 48 is a color corresponding to the color of the treatment tool that can be used for the endoscope provided with the index 48.

With the above structure, it is possible to prevent the treatment tool from being misused and to improve the inspection efficiency. Further, the treatment instrument is shared between the endoscope system for a cover and the conventional endoscope system without a cover, and the user does not need to purchase the treatment instrument for the endoscope system for a cover again.

Here, the display position of the index 48 is not limited to the treatment instrument insertion port 37, but the insertion portion cover 2
At the time of the inspection 2, the portion exposed from outside the body, for example, the mouth portion 22a may be used.

Further, the index 48 is not limited to the color, and may have any structure as long as it can correspond to the treatment tool such as characters and symbols.

Next, the structure of the fluid control device 9 will be described. FIG. 11 is a pipeline diagram related to air supply, water supply, suction, and expansion.

First, the air / water / expansion system will be described. An air supply pump (AP) 63 which is an air supply source shown in FIG.
The first solenoid valve 64 for switching between air supply and expansion is built in the fluid control device 9. The air supply pump 63 communicates with the first electromagnetic valve 64, which is a port valve. One end of the expansion tube connection conduit 65 is connected to one outlet of the first solenoid valve 64. The other end of the expansion tube connection conduit 65 communicates with an opening 65a provided in the fluid control device 9, as shown in FIG. An expansion tube 62 is provided in the opening 65a.
The connection mouthpiece 62a is detachably connected. The expansion tube 62 is detachably connected to the expansion tube opening 37 of the cover. The expansion tube 62 is used to expand the endoscope insertion channel 25.

A first air supply line 66 is connected to the other outlet of the first solenoid valve 64. The first
The air supply pipeline 66 is connected to a second solenoid valve 67 that controls air supply. Then, air is supplied from an air supply line A connected to the second electromagnetic valve 67.

The first air supply conduit 66 has a water supply pressurizing conduit 68 branched from the middle thereof. further,
The first air supply conduit 66 is, for example, the water supply pressurization conduit 6
A leak pipe 69 is branched and connected downstream from the branch point of No. 8. The leak conduit 69 communicates with the atmosphere via a third solenoid valve 70.

The water supply pressurizing conduit 68 communicates with the space above the stored water in the water supply tank 71. Then, in the water supply tank 71, with the suction port immersed in the water storage liquid,
The first water supply conduit 72 is connected. A fourth electromagnetic valve 73 for controlling water supply is connected to the first water supply conduit 72. Then, water is supplied from the water supply conduit W connected to the fourth electromagnetic valve 73.

On the other hand, the suction system is constructed as follows.

A suction pump (SP) 76 shown in FIG. 11 is a suction source used for inspection, and is provided outside the fluid control device 9, for example. The suction pump 76 is
Fifth for controlling suction through the internal space of the suction bottle 77
Of the solenoid valve 78. The fifth solenoid valve 78 is a 3-port valve and has two inlets and one outlet.

The suction pump 76 has a first suction line 7
9 to communicate with the internal space of the suction bottle 77. In addition, the second communicating with the internal space of the suction bottle 77
The suction line 80 is connected to the outlet of the fifth solenoid valve 78.

A suction leak pipe 81 communicating with the atmosphere is connected to one inlet of the fifth solenoid valve 78. Further, suction is performed from the suction pipe line S connected to the other inlet of the fifth electromagnetic valve 78. The fifth solenoid valve 78 is adapted to open and close each pipeline and switch the communication between the outlet and the two inlets.

The first to fifth electromagnetic valves are controlled by a control unit (not shown) provided in the fluid control device 9.

The above-mentioned air supply / water supply / suction / expansion pipeline system is specifically provided on the front surface of the fluid control device 9.
For example, they can be arranged and connected in the form shown in FIG. Reference numeral 83 in the drawing is a power switch.

As shown in FIG. 10, the fluid control device 9
The water supply tank 71 and the second, fourth, and fifth solenoid valves are arranged on the front surface of the. In addition, the air supply pump 65,
The first solenoid valve 64 and the third solenoid valve 70 are provided inside the fluid control device 9.

Further, on the front surface of the fluid control device 9, there is provided a switch 84 for switching between a function of supplying air to the expansion tube 62 and a function of supplying water and water. The changeover switch 84 is electrically connected to the control section. The control section controls the second and fourth electromagnetic valves 67 and 73 to enable switching of air supply and water supply.

Here, the second, fourth, and fifth electromagnetic valves 67, 73, 77 shown in FIG. 10 are of the pinch valve type for controlling the tube by crushing it. Therefore, in the configuration using the pinch valve type, the conduits A, W, shown in FIG.
S and the like have the following configurations. That is, the air supply conduit A is composed of the air supply pipe 26 of the insertion portion cover 22 and the air supply relay pipe 38 of the relay pipe 29 in this order from the tip side. In addition to the air supply conduit A, the air supply relay pipe 38 also has a role including a part of the first air supply conduit 66.

With the above structure, the gas sent from the air supply pump 63 passes through the air supply relay pipe 38 and the air supply pipe 26,
It is ejected from the air supply nozzle 43. The air supply is stopped by the second solenoid valve 67 collapsing the air supply relay pipe 38 to close the pipe line.

The water supply conduit W is composed of an air supply pipe 27 of the insertion portion cover 22 and a water supply relay pipe 39 of the relay pipe 29 in this order from the tip side. In addition to the air supply conduit W, the water supply relay pipe 39 has a first
It also has a role including a part of the water supply conduit 72.

With the above structure, the gas sent from the air supply pump 63 passes through the air supply pressurizing conduit 68, and then the water supply tank 71.
Pressurize the water storage solution. Then, the liquid, such as water, that has passed through the first air supply conduit 72 is used as the air supply conduit W and the water supply relay pipe 39.
Then, the water is ejected from the water supply nozzle 44 through the water supply pipe 27. When the water supply is stopped, the fourth solenoid valve 73 is operated by the water supply relay pipe 39.
The tube is closed by crushing.

Further, in the configuration shown in FIG. 10, the fifth solenoid valve 77 is a pinch valve type, so that the suction pipe line S is shown in FIG.
Unlike the configuration shown in FIG. 1, the Y-shaped branch pipe 85 is used. That is, the suction pipe line S is composed of the air supply pipe line 28 of the insertion section cover 22 and the air supply relay pipe 39 of the relay pipe 29 in order from the distal end side.
Then, the air supply relay pipe 39 and the suction leak pipe line 81
Is provided with the fifth solenoid valve 77 interposed and is connected to one end and the other end of the inlet of the Y-shaped branch pipe 85. Further, the outlet of the Y-shaped branch pipe 85 is connected to the suction bottle 77.
The other end of the second suction conduit 80 having one end connected thereto is connected.

In the above structure, the suction pressure by the suction pump 76 is transmitted to the opening 45 via the suction relay pipe 40 and the suction pipe 28 as the suction pipe line S. The suction is stopped by closing the suction relay pipe 40 by the fifth electromagnetic valve 77 and closing the pipe line.

If the fifth solenoid valve 77 is a port type, the Y-shaped branch pipe 85 is not necessary, and as shown in FIG. 11, the required pipes may be connected to the respective inlets and outlets of the port. . In this case, the air feeding relay pipe 39 is connected to one inlet of the port.

Next, the operations of air supply, water supply, suction and expansion will be described. Here, the method of attaching the cover will be described.

First, the arm 6a of the cover holder 6 is fitted into and held by the mouth 22a of the insert cover 22.

Next, the opening 65a of the fluid control device 9 is formed.
Then, the connection mouth ring 62a of the expansion tube 62 is connected. Next, the other end of the expansion tube 62 is attached to the insertion portion cover portion 22.
After connecting to the expansion tube mouth body 37, the air supply / water supply changeover switch 35 of the cover endoscope 4 is turned on. Then, the communication state of the first solenoid valve 64 of the fluid control device 9 is switched to the outlet on the side of the expansion tube connection pipeline 65.
Then, air is supplied to the inside of the insertion portion cover portion 22 via the extension tube connection pipeline 65 and the extension tube 62. In this state, the insertion portion 14 of the cover endoscope 4 is inserted and attached through the opening 25a of the insertion portion cover portion 22.

Then, the relay pipe 29 is connected to the pipe line storage connection pipe 30 of the insertion portion cover portion 22. further,
Air supply, water supply, suction relay pipes 38, 39 of the relay pipe 29,
40 is connected to each line of the fluid control device 9. For example, in the case of the configuration shown in FIG. 10, the relay pipes 38, 39,
40 is each pipe or Y protruding from the cap of the water supply tank 77.
It is connected to the letter branch pipe 85. The relay pipe 29 is fixed along the universal cord 13.

Next, the changeover switch 84 is turned off. As a result, the first solenoid valve 6 of the fluid control device 9 is
In No. 4, the communication state is switched to the first air supply conduit 66 and the first water supply conduit 68 side. That is, it becomes a state in which normal air and water can be supplied.

Next, the relay pipe 29 is connected to the pipe line connection pipe 30, the operation portion cover portion 23 is attached to the operation portion 12, and then the universal cord cover portion 24 is attached to the universal cord 13 and the relay pipe 29. Wrap and cover. In addition, the signal cord 21 connected to the video processor 8 is connected to the receiving portion 18a of the connector 18,
Finish the preparation.

Control of air supply / water supply / suction is performed as follows. First, the air / water supply will be described. When waiting,
The third solenoid valve 70 is open and the second and fourth solenoid valves 67 and 73 are closed in a state where the outlet of the first solenoid valve 64 is open to the first air supply line 66 side. That is, no air or water is supplied.

The air is supplied by, for example, turning off the switch 35 and turning on the water / water switch 34 to close the third electromagnetic valve 70 and open the second electromagnetic valve 67. . On the other hand, water is supplied by, for example, when the changeover switch 35 is ON and the air / water supply switch 34 is ON, the third electromagnetic valve 70 is closed and the fourth electromagnetic valve 73 is opened. The water may be sent simultaneously with the air supply.

On the other hand, suction is performed as follows. During standby, for example, the suction control switch 50 is turned off, the suction leak conduit 82 side is opened, and the third suction conduit 81 side is closed,
The suction leak pipe 81 is in communication with the fifth solenoid valve 78, and suction is stopped. That is, suction is not performed from the suction pipe line 28.

On the other hand, suction is performed by, for example, the suction control switch 5
When 0 is turned on, the operation of the fifth solenoid valve 78 is performed in the opposite manner to the above.

In this embodiment, since the insertion portion cover portion 22 is expanded, it is configured to be shared with the air supply pump of the fluid control device 9 without separately providing an expansion pump.
You can eliminate the need for a dilator. As described above, in this embodiment, it is possible to reduce the size of the device while eliminating the waste of the structure while maintaining the functions of the channel expansion function and the air / water supply function. It should be noted that the present embodiment is also effective if one of either air supply or water supply is performed.

Next, the prevention of the displacement between the insertion portion cover portion 22 and the insertion portion 14 of the cover endoscope 4 will be described. To prevent this misalignment, the insertion portion cover portion 22 is provided during the inspection.
A negative pressure state may be provided between the insertion portion 14 and the insertion portion 14.

By using the suction pump 86 shown in FIG. 5, the inside of the endoscope insertion channel 25 of the insertion section cover 22 can be made a negative pressure.

The insertion portion cover portion 2 is attached to the cover endoscope 4.
After attaching 2, the suction pump 86 is connected to the extension tube mouth 37 through the above-mentioned extension tube 62 and the like.
When the suction pump 86 is turned on, the endoscope insertion channel 2
The air inside 5 is evacuated and the inside becomes negative pressure. At this time, the insertion channel 25 and the cover outer cover 22c are in close contact with each other and are unlikely to slip. In this state, the insertion portion cover portion 22
The endoscopy can be performed without shifting.

Further, the suction pump 86 may be constructed as shown in FIG. 6 instead of being connected to the expansion tube mouth 37. That is, a negative pressure mouth 53 is provided in the mouth 22a separately from the expansion tube mouth 37. The internal duct of the negative pressure mouth 53 communicates with the endoscope insertion channel 25.

With the above configuration, the insertion portion cover portion 2
A negative pressure can be created between the insertion portion 14 and the insertion portion 14, and the insertion portion 14 and the insertion portion cover portion 22 are in close contact with each other, so that the cover portion 22 can be prevented from shifting during inspection.

Further, the suction pump 86 may be configured so as to be shared with the suction pump 76 used for the inspection. An example of the configuration is shown in FIG. The suction pump 76 shown in FIG. 7 is a pump used for inspection.

As shown in FIG. 7, the suction pump 76 provided outside the fluid control device 9 is a fifth solenoid valve for controlling the opening and closing of the pipeline via the internal space of the suction bin 77. It communicates with 78. The solenoid valve 78 is provided in the fluid control device 9.

The suction pump 76 is connected to the first suction line 7
9 to communicate with the internal space of the suction bottle 77.
In addition, the second conduit 59 having one end communicating with the inner space of the suction bottle 77 has the other end branched into two. One branch conduit 60 is connected to and connected to the outlet of the solenoid valve 78. The other conduit 61 is connected to the expansion tube mouth 37 or the negative pressure mouth 38.

With the above structure, the suction pump 76 is turned off.
When set to N, the suction pressure generated by the suction pump 76 is the suction pressure of the first suction pipe 79, the suction bottle 77, and the second suction pipe 77.
Through the suction pipe 59 of the first and second pipes 60, 61
To each one. At this time, one branch pipe 6
0 for the suction operation at the time of inspection, and the other branch line 6
1 makes it possible to make a negative pressure between the cover endoscope 4 and the insertion portion cover portion 22. Although the negative pressure can be made at the same time, the solenoid valve 78 is controlled by the control unit (not shown).
The branch pipe 60 side can be closed by controlling the. That is, the negative pressure can be prevented from being transmitted.

As described above, the endoscope insertion channel 25 into which the endoscope insertion portion 14 is inserted becomes airtight in the state where the endoscope insertion portion 14 is mounted except for the expansion tube mouth 37. It is like this. Therefore, when the endoscope is attached, the endoscope insertion channel 25 can be expanded by supplying air from the mouth 37. On the other hand, even when the endoscope insertion channel 25 has a larger inner diameter than the insertion portion 14 and the insertion portion cover portion 22 does not need to be expanded, the above-described configuration is effective.

12 and 13 relate to the second embodiment of the present invention, FIG. 12 is an enlarged view of a part of the front surface of the light source device, and FIG. 13 is a schematic configuration diagram of the inside of the light source device.

The second embodiment has a construction in which a pump, which is an air supply source provided in the light source, is used as an expander.
Other than that, regarding the same configuration and operation as in the first embodiment,
The same reference numerals are given and the description is omitted.

FIG. 12 is an enlarged view of the configuration of the connector 91 provided in place of the connector 18 of the cover endoscope 4 and the connector receiving portion 92 of the light source device 7A provided in place of the light source device 7. Is shown. At the tip of the connector 91, a lighting base 93 having a light guide fiber for lighting, which is not shown in the drawing, is received and protruded from a main body 94. The receiving body 94 of the connector receiver 91 has a notch 94a formed on the front end side of the cylinder.

The illumination base 93 of the connector 91 is detachably connected to the light guide hole 95 provided in the connector receiving portion 92.

An expansion tube connection port 96 is provided below the light guiding hole 95, and the connection cap 97a of the expansion tube 97 is detachably connected. The expansion tube 97 is provided with the cutout portion 9 in the middle of the pipeline.
An engaging member 97b that engages with 4a is interposed.

Engaging member 97b of the expansion tube 97
Together with the connector 91, the connector receiving portion 92
Is engaged with and retained.

As shown in FIG. 13, a condenser lens 98 and a light source lamp 99 are disposed behind the light guiding hole 95. With the connector 91 attached to the light guiding hole 95, the light source lamp 99 is attached to the light guide fiber.
The illumination light from is supplied.

Further, as shown in FIG. 13, an air supply pump (AP) 101 as an air supply source is arranged behind the pipe 100 communicating with the connection port 96. The air supply pump 101 is an air supply source for air supply, water supply, and expansion, and is ON / OFF controlled by the control unit 102. A switch 103 that controls the operation of the air supply pump 101 is electrically connected to the control unit 102. In the above structure, the air supply pump 63 provided in the light source device 7A is used as an air supply source for air supply, water supply, and expansion, instead of the air supply pump 63 provided in the fluid control device 9 described in the first embodiment. be able to. In this configuration, the air supply pump 101 and the inlet of the first solenoid valve 64 are connected and connected. Other configurations and operational effects are similar to those of the first embodiment, and therefore, illustration and description thereof are omitted.

In addition to the above structure, the light source device 7A is also provided.
The operation when the is used as an extender will be described.
First, the connection mouthpiece 9 is connected to the connection mouthpiece 9 of the expansion tube 97.
7a is connected. Next, the other end of the expansion tube 97 is connected to the expansion tube mouth 37. Switch 103
When is turned on, air is supplied into the expansion tube 97, and the insertion portion 14 can be easily attached to the insertion portion cover portion 22.

The method of attaching the cover is the same as that of the first embodiment, and the description thereof will be omitted. However, this embodiment not only requires the same effect as that of the first embodiment but also uses the existing light source. It is not necessary to provide the controller with an expanded function air supply source.

When the air supply pump 101 is used as an air supply source for supplying air and water, the other end of a pipe (not shown) whose one end communicates with and is connected to the inlet of the first solenoid valve 64,
It is connected to the connection port 96. With the configuration described above,
Since the conduits are selectively connected to share the air supply source, the expansion conduit connection tube 65 shown in FIG. 11 is not connected to the outlet of the first solenoid valve 64. .

The second embodiment can also be applied to an endoscope having no air / water feeding function, for example, an endoscope for bronchi. In this example, the fluid control device 9 is unnecessary,
The light source device 7 is necessary. Therefore, for the endoscope as described above, the existing light source device 7 described in the second embodiment is used.
The air supply pump 101 incorporated in A can be used to attach and detach the insertion portion cover portion 22.

Here, the above-described structure is different only in that it has no air / water supply function, and the attaching / detaching mechanism of the insertion portion cover portion 22 and its operation and effect are the same as those in the second embodiment, and the explanation thereof will be omitted.

The present invention is not limited to electronic endoscopes, but is also effective for optical fiber endoscopes, ultrasonic endoscopes, and the like.

[0127]

As described above, according to the present invention, at least one function of air supply or water supply and the expansion function of the endoscope insertion channel are retained, the waste of the structure is eliminated, and the apparatus is miniaturized. There is an effect that can be converted.

[Brief description of drawings]

1 to 11 relate to a first embodiment of the present invention, and FIG. 1 is an overall external view of an endoscope system for connecting a cover endoscope.

FIG. 2 is a side view of the cover endoscope in which the cover for the insertion portion is mounted.

FIG. 3 is a side view showing another configuration relating to a connecting pipe and a relay pipe.

FIG. 4 is a side view showing still another configuration relating to the connection pipe and the relay pipe in FIG. 4;

FIG. 5 is a side view showing a configuration of a suction system.

FIG. 6 is a side view showing another configuration of the suction system.

FIG. 7 is a pipeline diagram of a suction system.

FIG. 8 is a front view, a side cross-section, and a perspective view of the distal end side of the cover-type endoscope.

FIG. 9 is a front view and a cross-sectional view of the distal end side of the cover-type endoscope.

FIG. 10 is a front side external view showing a configuration of a fluid control device and a pipeline.

FIG. 11 is a pipeline diagram relating to air supply, water supply, suction, and expansion.

12 and 13 relate to a second embodiment.
Is an enlarged view of a part of the front surface of the light source device.

FIG. 13 is a schematic configuration diagram of the inside of the light source device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope system 2 ... Cover endoscope 4 ... Cover endoscope 9 ... Fluid control device 63 ... Air supply pump 64 ... First solenoid valve 65 ... Expansion tube connection conduit A ... Air supply conduit W … Water supply pipe 71… Water supply tank

Claims (1)

[Claims] 1. An endoscope for an endoscope cover with a channel having an insertion portion to be inserted into a body cavity (hereinafter referred to as an endoscope for a cover), and an insertion portion cover for covering the insertion portion of the endoscope for a cover. And a cover-type endoscope including at least one part for supplying air or water, and a control device for controlling at least one of the air or water supplied by the cover-type endoscope, An air supply source used for expanding the insertion section cover section when the insertion section of the cover endoscope is attached to or detached from the insertion section cover section, and an air supply source used for at least one of the air supply or the water supply. The endoscope system of the endoscope cover system, which is characterized in that