JPH06304128A - Endoscope - Google Patents

Abstract

PURPOSE:To obtain the endoscope which is small in size and light in weight by a simple constitution, and also, provided with an air supply/water supply mechanism whose washing efficiency is excellent. CONSTITUTION:In an air supply/water supply button 14, the exterior of an operating part 3 is held by an air supply/water base part 21 having air supply holes 22a, 22b and an air supply base part receiver 20, and screwed and fixed with a screw 20a. A main body part 24 is attached to the air supply/water supply base part 21 so as to be freely attachable and detachable. The air supply/ water supply button 14 is constituted of the main body part 24, a button part 26 having a leak hole 23, a spring 27 and a button receiver 25, that is, constituted so that the spring 27 is dropped into the main body part 24, the botton part 26 is placed thereon, and also, the button receiver 25 is placed thereon, and the button receiver 25 is stuck to the main body part 24. A second air supply conduit line 15 is allowed to communicate with the air supply hole 22a, and a first air supply conduit line 12 is allowed to communicate with the air supply hole 22b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope having an improved air / water supply mechanism for air / water supply.

[0002]

2. Description of the Related Art Conventionally, an air / water supply mechanism for an endoscope is equipped with a cylinder to which an air / water supply conduit is connected and an air / water supply button fitted to this cylinder, and is in communication with the air supply conduit. The air supply / water supply control is performed by closing the leak hole of the air supply / water supply button or by closing the air supply conduit by pushing the air supply / water supply button.

[0003]

However, since the cylinder in the above-mentioned conventional structure is constructed by connecting the air supply and water supply pipes to a cylindrical one, the structure becomes complicated and if the cylinder is large. Inevitably, there is a problem that the endoscope operation unit itself becomes large. Further, since the cylinder has a tubular shape, there is also a problem that it takes time to perform cleaning because it is difficult for a cleaning tool or the like to reach the bottom or the like and poor water contact. Furthermore, since the inner diameter of the cylinder is generally much larger than the inner diameter of the air supply and water supply pipelines, when flushing water is supplied to the air supply and water supply pipelines, the flow velocity changes as the inner diameter of the pipeline changes.・ Since the water pressure will also change partially, the cleaning effect may not be evenly distributed.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an endoscope having a simple structure, a small size, a light weight, and an air / water supply mechanism excellent in cleaning efficiency. .

[0005]

The endoscope of the present invention includes an insertion portion to be inserted into a lumen, an operation portion provided on the proximal end side of the insertion portion, and an extension portion extending from the operation portion. In an endoscope including an extending tube to be ejected, a first conduit that is inserted into the extending tube, a second conduit that is inserted into the inserting portion, and the operation portion are fixedly provided. The first pipeline and the pipeline, each of which has a pipeline communication member that communicates the first pipeline and the second pipeline, and a communication hole that faces the pipeline communication member and is separated from each other and that communicates with outside air. A closing member that can be pushed to a closing position of the conduit communication member that closes the second conduit, and the closing position of the conduit communication member is on the same plane as the outer surface of the operation portion or at least the above-mentioned By projecting from the outer surface, the air and water supply mechanism is realized with a simple structure, Kiyoshisei it is possible to improve.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 relate to a first embodiment of the present invention, FIG. 1 is a configuration diagram showing a configuration of a pipe line of an endoscope, FIG. 2 is a configuration diagram showing a configuration of an air / water supply button, and FIG. FIG. 4 is an explanatory view for explaining the connection between the air / water supply mouthpiece and the main body, and FIG. 4 is an explanatory view for explaining the cleaning of the conduit of the endoscope from the air / water supply button.

As shown in FIG. 1, the endoscope of the first embodiment has an insertion portion 2 to be inserted into a lumen, an operation portion 3 provided on the proximal end side of the insertion portion 2, and this operation. A universal cable 4 is provided which extends from the portion 3 and has a connector 5 at the tip.

The connection connector 5 is connected to a light source device (not shown) and is supplied with illumination light. The illumination light is passed through the endoscope 1 and a light guide (not shown) is provided at the tip of the insertion portion 2 to form a tip. Irradiation is carried out forward from the tip surface of 6. Reflected light of the illuminated illumination light from an observation site (not shown) is an objective lens system 7 provided at the tip of the tip forming portion 6.
An image is formed on the image pickup surface of the solid-state image pickup device, for example, the CCD 8 via the. The image formed on the CCD 8 is photoelectrically converted, signal-processed by the image pickup unit 9 including an electronic circuit, and then transmitted to the signal cable 10. The signal cable 10 is inserted through the endoscope and is connected to an image processing device (not shown) via the connector 5 so as to display an image of the observed region.
The CCD 8 is driven by a drive circuit in the image processing apparatus (not shown).

A nozzle 11 for supplying air and water toward the entrance surface of the objective lens system is provided at the front end of the tip forming section 6, and this nozzle 11 is provided with an air supply and water supply button provided in the operating section 3. A first air supply conduit 12 communicating with an air supply / water supply cap 21 to be described later of 14 is connected. The second air supply conduit 15 is connected to the air supply / water supply mouthpiece 21 of the air supply / water supply button 14 adjacent to the first air supply conduit 12 and communicates with each other through their openings. The second air supply conduit 15 is inserted through the universal cable 4 and communicates with the air supply port of the air supply device (not shown) of the light source device through the connector 5. Further, in the connector 5, the water supply tank conduit 16 branches from the second air supply conduit 15 and communicates with the water supply tank 17. Here, a relief valve 18 is provided at the tip of the water supply tank conduit 16 so as not to communicate unless the air pressure from a light source device (not shown) exceeds a predetermined pressure. In addition, in the insertion portion 2, the first air supply line 1
A water supply conduit 13 branched from 2 is provided so as to communicate with the water supply tank 17 through the insertion portion 2, the operation portion 3 and the universal cable 4, and the opening of the water supply conduit 13 is provided in the water supply tank. It is inserted in the liquid.

The air / water button 14 is shown in FIG.
As shown in FIG. 2, an air / water supply mouthpiece 21 having air supply holes 22 a and 22 b and an air supply mouthpiece receiver 2 provided inside the operation portion 3.
The outer portion of the operation portion 3 is sandwiched between the two and 0, and further fixed by screwing with the screw 20a. The body portion 24 of the air / water feeding button 14 is detachably provided on the air / water feeding base 21.

That is, as shown in FIG. 3, the main body portion 24 is mounted by fitting the flange portion 21a of the air / water supply mouthpiece 21 and the flange portion 21a provided on the main body portion 24 in the same shape and slightly larger. The fitting portion 24a and the flange portion 21a are engaged with each other by fitting the portion 24a and rotating the body portion 24 by 90 °. Further, the dismounting can be done by rotating the main body portion 24, which is the reverse of the mounting operation.

Returning to FIG. 2A, the air / water supply button 14
Is a body portion 24, a button portion 26 having a leak hole 23,
It is composed of a spring 27 and a button receiver 25. That is, the spring 27 is dropped into the main body portion 24, the button portion 26 is placed thereon, and the button receiver 25 is further placed thereon. Adhere to and configure.
As a result, the button portion 26 is always held upward by the spring 27.

The second air supply line 15 has an air supply hole 22.
a is communicated with the opening inside the operation portion 3 and similarly the first portion
The air supply conduit 12 communicates with the opening inside the operation unit 3 of the air supply hole 22b. The surface of the air / water supply mouthpiece 21 having an opening on the outside of the air supply holes 22a, 22b protrudes from the exterior of the operation section 3, and further, this surface forms the air supply holes 22a, 22b by the flat bottom of the button section 26. The operation portion 3 is also a flat surface with respect to the exterior so that it can be closed. The bottom surface of the button portion 26 only needs to be able to close the air supply holes 22a and 22b, and thus the outer surface of the air supply / water supply mouthpiece 21 is not necessarily flat.

The operation of this embodiment with the thus constructed endoscope will be described.

When the air / water supply is not performed, as shown in FIG. 2A, the air supplied from the light source device (not shown) passes through the second air supply conduit 15 and the air supply hole of the air / water supply mouthpiece 21. It is sent to the air / water supply button 14 via 22a. At this time, since the leak hole 23 of the button portion 26 is not closed, air is leaked to the outside air by the leak hole 23,
The air is not supplied to the first air supply conduit 12 through the air supply hole 22b, and thus is not supplied to the lumen. Further, referring to FIG. 1, since the relief valve 18 at the tip of the water supply tank conduit 16 branched from the second air supply conduit 15 is not supplied with a pressure higher than a predetermined pressure, the relief valve 1
No. 8 remains closed, and the pressure in the water supply tank 17 does not change, so that water is not supplied into the lumen via the water supply conduit 13.

Further, at the time of air supply, as shown in FIG. 2 (b), the air is sent through the second air supply conduit 15 into the air supply / water supply button 14 through the air supply hole 22a of the air supply / water supply mouthpiece 21. The air supplied from the light source device (not shown) is sent to the first air supply conduit 12 through the air supply hole 22b by closing the outside air side of the leak hole 23 with a finger or the like. Therefore, the air is fed from the nozzle 11 into the lumen through the first air feeding conduit 12. On the other hand, at this time as well, since the relief valve 18 is not supplied with a pressure equal to or higher than a predetermined pressure, the relief valve 18 remains closed and the pressure in the water supply tank 17 does not change. No water is sent inside (see Fig. 1).

Next, the time of sending water will be described. Figure 2
As shown in (c), with the leak hole 23 closed, the button portion 26 is pushed until it abuts against the air / water feeding mouthpiece 21, so that the air feeding holes 22a, 22b are formed in the button portion 2
Blocked by 6. As a result, referring to FIG. 1, the pressure of the air supplied from the light source device (not shown) in the second water supply conduit 15, that is, the pressure in the water supply tank conduit 16 becomes higher than the predetermined pressure. The valve 18 is opened. As a result, the inside of the water supply tank 17 is pressurized, and the water in the water supply tank 17 passes through the water supply line 13 to the nozzle 11
Then, the incident surface of the objective lens system 7 is cleaned.

Next, the first air supply line 12 and the second air supply line 1
The cleaning such as 5 will be described.

As shown in FIG. 4, the main body portion 24 is removed from the air / water supply mouthpiece 21, and the attachment mouthpiece 34 is attached to the openings of the air supply holes 22a and 22b on the outside of the operation portion 3 via the O-rings 33. The cleaning tubes 31, 32 are attached to one end of the attachment base 33. By injecting cleaning water from the cleaning tubes 31, 32, the first air supply conduit 12, the second air supply conduit 15, and the conduits branched from these conduits are cleaned. Since the endoscope of this implementation order is made up of a small number of pipelines, including branch pipelines, the entire pipeline can be uniformly cleaned. The mounting base 34 is an O-ring 3.
Since it is arranged via 3, the cleaning can be easily performed without causing water leakage or the like.

As described above, according to the endoscope of this embodiment, the air / water feeding button 14 is provided in the main body portion 24 and the button portion 2.
6, the spring 27 and the button receiver 25 can be included in a small number of parts, and the cost can be reduced. As a result, the operation unit 3 including such an air / water supply button 14 can be configured to be small and lightweight, and operability can be improved, and at the same time, the outer surface of the air / water supply mouthpiece 21 can be operated by the operation unit 3. Since the main body portion 24 is configured to be detachable from the outer casing of the air supply / water supply button 1 by detaching the main body portion 24.
4 The inside can be easily washed.

Further, since the air / water supply button 14 can be realized at low cost, it can be used as a disposable air / water supply button, and an endoscope which is easier to clean can be obtained.

Further, from the air / water supply button 14 to the main body 2
Since the pipe 4 can be easily removed to clean the pipe line in the endoscope, the pipe line can be easily cleaned.

Next, a second embodiment will be described. FIG. 5 is a configuration diagram showing a configuration of an air / water supply button according to the second embodiment.

Since the second embodiment is almost the same as the first embodiment, only different constructions will be described, and the same constructions will be denoted by the same reference numerals and description thereof will be omitted.

The air / water supply button of the second embodiment is shown in FIG.
As shown in (a), an elastic button portion 41 having a leak hole 41a is formed by integrally forming the main body portion and the button portion of the first embodiment by an elastic member. The elastic button portion 41 is provided on the operation portion 3 by the same method as in the first embodiment.
It is removable. The other structure is the same as that of the first embodiment.

In the second embodiment, the operation when air and water is not supplied (FIG. 5A) is the same as that of the first embodiment, and when air is supplied (FIG. 5B). Leak hole 4
By closing 1a, the same operation as that of the first embodiment is achieved, and the description thereof is omitted.

In the second embodiment, the function of supplying water is to close the air supply holes 22a and 22b by deforming the elastic button portion 41 with a finger as shown in FIG. 5 (c). Other functions are the same as those in the first embodiment.

As described above, according to the second embodiment, in addition to the effect of the first embodiment, since the air / water feeding button is composed of one elastic button portion 41, it is further compact, lightweight and inexpensive.
Moreover, it is possible to realize an air / water supply button suitable for disposable use.

Next, a third embodiment will be described. 6 and 7 relate to the third embodiment, FIG. 6 is a configuration diagram showing the configuration of the conduit of the endoscope, and FIG. 7 is a configuration diagram showing the configuration of the air / water supply button.

As shown in FIG. 6, in the endoscope of the third embodiment, the nozzle 11 is connected to the air / water supply mouthpiece 21 of the air / water supply button 52 provided on the operation portion 3 and the first air supply conduit 12 is connected. Are connected. Air supply / water supply button 14
1 is adjacent to the first air supply line 12 and the second air supply line 53
Are connected and communicate with each other through their openings. The second air supply conduit 53 is inserted into the universal cable 4 and guided into the water supply tank 17 via the connector 5. On the other hand, the water supply tank 17 is provided with a third air supply conduit 55 communicating with the air supply port of the air supply device of the light source device (not shown) via the connector 5. In addition, the first water supply conduit 51 branched from the first air supply conduit 12 in the insertion portion 2 communicates with the air supply / water supply mouthpiece 21, and the air supply / water supply mouthpiece 21 further includes the first water supply conduit 21. Adjacent to the water conduit 51, the second water conduit 5
4 are connected and communicate with each other through their openings. The second water supply conduit 54 is inserted into the universal cable 4 and guided into the water supply tank 17 through the connector 5 so that the opening is inserted into the liquid in the water supply tank.

The air / water supply mouthpiece 21 of the air / water supply button 52
As shown in FIG. 7A, when viewed from the top, the air supply holes 22a and 22b and the water supply holes 61 and 62 are juxtaposed, and the projections are provided on the insertion portion 2 side of the air supply holes 22a and 22b. A stopper 69 is provided. The air supply hole 22a
Has a second air supply conduit 53, an air supply hole 22b has a first air supply conduit 12, and a water supply hole 61 has a second water supply conduit 54.
The first water supply conduits 51 communicate with the water supply holes 62, respectively.

In the cross section of the air / water supply button 52 shown in FIG. 7B, the elastic button portion 65 is detachably attached to the air / water supply mouthpiece 21 by the same method as in the first embodiment. The neutral position of the elastic button portion 65 is shown by the broken line in FIG. Therefore, in the third embodiment, as in the second embodiment, the air / water supply button 52 has one elastic button portion 6.
It is composed of 5. The elastic button portion 65 has an air / water feeding split portion 66 protruding from the inside at a position facing the water feeding holes 61, 62. Normally, the air / water feeding split portion 6 is provided.
The water supply holes 61 and 62 are closed by 6, and the water supply chamber 67 is formed on the right side in the figure by the air / water supply dividing unit 66. In addition, the leak hole 23 is provided in the division portion on the opposite side of the water supply chamber 67 formed by the air / water supply division portion 66,
A pressing portion 68 is provided outside the leak hole 23. Its structure is the same as that of the first embodiment.

The operation of the third embodiment thus constructed will be described.

When the air and water are not supplied, as shown in FIG. 7B, the air supplied from the light source device (not shown) passes through the third air supply conduit 55 and the water supply tank 17 to the second side.
It is sent into the air / water supply button 14 through the air supply pipe 53 and the air supply hole 22a of the air / water supply mouthpiece 21. At this time, since the leak hole 23 of the elastic button portion 65 is not closed,
The air is leaked to the outside air through the leak hole 23 and is not sent to the first air sending conduit 12 through the air sending hole 22b, and thus is not sent into the lumen. Further, since the air / water supply division unit 66 constantly presses the air / water supply mouthpiece 21, air does not leak into the water supply chamber 67.

Further, at the time of air supply, as shown in FIG. 7 (c), the air is sent into the air / water supply button 52 through the second air supply conduit 53 and the air supply hole 22a of the air / water supply mouthpiece 21. The air supplied from the light source device (not shown) is sent to the first air supply conduit 12 through the air supply hole 22b by closing the outside air side of the leak hole 23 with a finger or the like. Therefore, the air is fed from the nozzle 11 into the lumen through the first air feeding conduit 12. Also at this time, the air / water splitting unit 66 constantly presses the air / water supply mouthpiece 21, so that air does not leak into the water supply chamber 67.

Next, the time of water supply will be described. Figure 7
As shown in (d), when the leak button 23 is closed, the elastic button portion 65 is pushed toward the insertion portion 2 side with a finger, so that the elastic button portion 65, which is an elastic member, tilts, and accordingly, air / water splitting is performed. The portion 66 also moves to the insertion portion 2 side. Further, if the push is continued, the air / water splitting unit 66 eventually stops against the stopper 69. This state is the water supply state, and the air sent to the water supply tank 17 has the air supply holes 22a,
Since 22b is closed by the air / water splitting unit 66, the air in the water tank 17 that has lost its place pressurizes the water surface. As a result, the water in the water supply tank 17 has a second
It is jetted from the nozzle 11 via the water supply pipe 54, the water supply holes 61 and 62, and the first water supply pipe 51. In addition, even when shifting from the air supply to the water supply state, the air supply / water supply splitting unit 66 operates the air supply / water supply base 21.
Is always pressed, the air does not leak into the water supply chamber 67.

As described above, in the third embodiment, since the pipe line is not branched in the connector 5, the cleaning performance is further improved in addition to the effect of the first embodiment.

Although the nozzle 11 is configured to use both water supply and air supply, it is also possible to separately provide an air supply nozzle and a water supply nozzle, which allows branching in the insertion portion. Since it is not necessary, there is no change in the line resistance during cleaning, and cleaning performance is further improved.

Further, the endoscope in each of the above embodiments has been described by taking an electronic endoscope having an image pickup element as an example, but the present invention is not limited to this, and an observation image is displayed from the tip to the eyepiece by an image guide or the like. It goes without saying that a normal endoscope for transmitting and observing may be used, and further, these endoscopes may be direct-viewing type or side-viewing type endoscopes.

By the way, as shown in FIG. 8A, an illumination window 71 for illuminating illumination light transmitted by a light guide (not shown) in addition to the objective optical system 7 is provided on the tip surface of the tip forming section 6. An opening 72 of a channel (not shown) that is inserted through the insertion portion 2 for inserting a treatment tool or the like is provided. A
As shown in FIG. 8B which is a cross section taken along the line A-A ′, the nozzle 1
A first air supply line 12 is connected to the nozzle 1, and the nozzle 11 is pressed and fixed by a hood 76 made of resin.
Further, the hood 76 is screw-fitted to the tip end portion main body 75 of the tip end forming portion 6. Furthermore, the nozzle 11 and the first air supply line 1
A rubber packing 78 is provided between the first and second air supply lines 1.
The watertightness of 2 is also sufficiently maintained.

As described above, since the nozzle 11 is attached via the hood 76, the nozzle 11
Even when the nozzle 11 is clogged, the user can easily replace the nozzle 11 by removing the hood 76, and ultrasonic cleaning can be performed by the nozzle 11 alone. Further, by removing the nozzle 11 when cleaning the conduit in the endoscope 2, the orifice of the nozzle 11 is eliminated, and the flow rate of the cleaning liquid flows uniformly and sufficiently, so that the cleaning performance is improved.

Further, as shown in FIG. 9, if the hood 76a is made of rubber by using the nozzle 11 as an insert portion,
The water-tight rubber packing of the first air supply line 12 is not required, and the hood 76a can be easily attached to and detached from the tip forming section 6.

On the other hand, the image pickup signal from the CCD 8 arranged at the image forming position of the objective lens system 7 of the tip forming section 6 is subjected to signal processing by a signal processing section (not shown) and displayed as an image on a monitor (not shown). As shown in FIG. 10A, this CCD 8 has an electrical contact 81 made of a conductor protruding from the side surface, and an electrical contact 81 is formed on the inner surface of the ceramic substrate 8a into which the CCD 8 is inserted. Contact receiver 82
Is protruding. Further, the electric contact receiver 82 is connected to the lead 83 on the back side of the ceramic substrate 8a. The relationship between the width L1 of the CCD 8 including the electric contact 81 and the width L2 of the electric contact receiver of the ceramic substrate 8a is that L1 is L
The length is slightly longer than 2, and when the CCD 8 is inserted into the ceramic substrate 8a, the electric contacts 81 and the electric contact receivers 82 are always electrically connected (see FIG. 10).
(B)). In this state, as shown in FIG. 10C (cross section taken along the line BB ′ of FIG. 10B), the transparent adhesive 84 is applied to C
The CD 8 is filled in the light receiving portion side, and the ceramic substrate 8 a and the cover glass 84 are bonded to each other with the adhesive 84.

Thus, the CCD 8 and the ceramic substrate 8a
By providing the electrical contact with and on the side surface for packaging the CCD, wire bonding between the CCD 8 and the ceramic substrate 8a can be eliminated, the CCD package can be downsized, and more reliable wiring can be achieved by wire bonding. Furthermore, airtightness can be sufficiently maintained.

By the way, in the image pickup section 9 equipped with an electronic circuit for performing preprocessing such as amplification on the image pickup signal of the CCD 8, FIG.
As shown in (a), a multilayer substrate 91 is used.
An IC chip 92 is adhered to the multilayer substrate 91,
The bonding pad of the pattern 93 provided on the multilayer substrate 91 and the bonding pad of the IC chip 92 are wire-bonded by the bonding wire 94 and electrically connected. Further, as shown in FIG.
As shown in (C-C 'line cross section of (a)), a groove portion 95 is formed in the first layer 91a of the multilayer substrate 91 by punching so as to cover the IC chip 92, the bonding wire 94, and the groove portion 95. The sealing resin 96 is filled.

Since the image pickup section 9 is constructed as described above, even in the multilayer substrate 91 which is made extremely small due to the thinning of the distal end constituting section 6 of the endoscope 2 and the shortening of the hard section length, the multilayer board 91 By providing the groove portion 95 on the substrate 91, the adhesive area between the multilayer substrate 91 and the sealing resin 96 can be increased and the adhesive strength can be increased. Therefore, the lead of the multilayer substrate 91 and the lead 83 of the ceramic substrate 8a of the CCD 8, for example, can be connected. It is possible to improve the peeling resistance of the sealing resin 96 due to the heat due to the soldering, the THB test, the gas sterilization, and the like. still,
The substrate does not have to be a multi-layer substrate, and a single layer substrate may be subjected to laser processing to form a groove.

On the other hand, in the image pickup section of the endoscope in which the insertion section is composed of the curved section 2a and the flexible section 2b, and the distal end constituting section 6 is formed at the distal end of the curved section 2a, as shown in FIG. The flexible circuit board 101 and the wiring board 102 are connected to the leads 83 of the ceramic substrate 8a of the CCD 8. The circuit board 101 has an IC chip 92 and a capacitor 104, and the IC chip 92 is sealed with a sealing resin 96. The circuit board 101 and the wiring board 102 are connected to a signal cable 106.
Reference numeral 6 is inserted through the endoscope 2 via the cable receiver 105 and is connected to an electric connector portion (not shown) from the connector 5.
An image can be obtained by connecting this electric connector to a signal processing unit (not shown). Here, the signal cable 106 is not fixed to the cable receiver 105.

A shield cover 110 is provided around the CCD portion composed of the CCD 8 and the ceramic substrate 8a and constitutes a hard portion of the image pickup portion 8. This shield cover 11
The back surface of the internal ceramic substrate 8a is filled with the filler 103. The outside of the curved portion 2a is covered with a stretchable protective tube 100.

When the image pickup section is constructed as described above, FIG.
As shown in (b), the circuit board 101 and the wiring board 1
Since 02 is flexible and the protective tube 100 is expandable and contractible, the imaging unit 8 itself is flexible and the bending portion 2a can be bent. Therefore, by making each substrate connected to the leads 83 of the CCD 8 flexible, even if the image pickup unit 8 is on the curved portion 2a, the image pickup unit 8 itself can bend, so that the image pickup unit 8 is not obsessed. ,
The hard portion of the distal end forming portion 6 of the endoscope 2 can be shortened.

An image pickup section 8 as a modified example of shortening the hard portion of the tip forming section 6 will now be described. As shown in FIG. 13, the leads 83 of the ceramic substrate 8a of the CCD 8
And the signal cable 106 are electrically connected by flip-chip bonding the IC chip 92 and the capacitor 104, and the lead 83 and the signal cable 106 are directly connected. A shield cover 110 is provided to protect these electric circuits, and the inside thereof is filled with a filler 96, and the shield cover 1 is provided.
The outside of 10 is covered with a protective tube 100.

Therefore, the leads 83 of the CCD 8 and the signal cable 106 are connected to the IC chip 92 and the capacitor 10.
By directly connecting to the image pickup unit 4, the length of the hard portion of the image pickup unit is shortened, so that the hard portion of the tip forming unit 6 can be shortened.

[0053]

As described above, according to the endoscope of the present invention, since the closed position of the conduit communication member is flush with the outer surface of the operating portion or at least protrudes from the outer surface, air is fed. There is an effect that the water supply mechanism can be realized with a simple structure and the cleaning property can be improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing a duct configuration of an endoscope according to a first embodiment.

FIG. 2 is a configuration diagram showing a configuration of an air / water supply button of FIG.

FIG. 3 is an explanatory view for explaining the connection between the air / water supply mouthpiece of FIG. 2 and the main body.

FIG. 4 is an explanatory diagram for explaining cleaning of the conduit of the endoscope from the gas / water supply button of FIG.

FIG. 5 is a configuration diagram showing a configuration of an air / water supply button according to a second embodiment.

FIG. 6 is a configuration diagram showing a duct configuration of an endoscope according to a third embodiment.

FIG. 7 is a configuration diagram showing a configuration of an air / water supply button of FIG.

FIG. 8 is a cross-sectional view showing a configuration of a tip forming portion.

FIG. 9 is a cross-sectional view showing a configuration of a modified example of the tip end configuration portion.

FIG. 10 is an explanatory diagram illustrating a package of a CCD and a ceramic substrate.

FIG. 11 is a configuration diagram showing a substrate configuration of an imaging unit.

FIG. 12 is a configuration diagram showing a configuration of an electric circuit unit of an image pickup unit.

FIG. 13 is a configuration diagram showing a configuration of a modified example of an electric circuit unit of an image pickup unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope 2 ... Insertion part 3 ... Operation part 12 ... 1st air supply conduit 13 ... Water supply conduit 14 ... Air supply / water supply button 15 ... 2nd air supply conduit 16 ... 3rd air supply conduit 17 ... Water supply tank 20 ... Air supply mouthpiece receiver 21 ... Air supply water supply mouthpiece 22a, 22b ... Air supply hole 23 ... Leak hole 24 ... Main body part 25 ... Button receiver 26 ... Button part 27 ... Spring

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[Procedure amendment]

[Submission date] June 7, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0012

[Correction method] Change

[Correction content]

That is, as shown in FIG. 3, the main body portion 24 is mounted by fitting the flange portion 21a of the air / water supply mouthpiece 21 and the flange portion 21a provided on the main body portion 24 in the same shape and slightly larger. The fitting portion 24a and the flange portion 21a are engaged with each other by fitting the portion 24a and rotating the body portion 24 by 90 °. Further, the dismounting can be done by rotating the main body 24 by 90 ° contrary to the work at the time of mounting.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction content]

The second air supply line 15 has an air supply hole 22.
a is communicated with the opening inside the operation portion 3 and similarly the first portion
The air supply conduit 12 communicates with the opening inside the operation unit 3 of the air supply hole 22b. The surface of the air / water supply mouthpiece 21 having an opening on the outside of the air supply holes 22a, 22b protrudes from the exterior of the operation section 3, and further, this surface forms the air supply holes 22a, 22b by the flat bottom of the button section 26. so that it can be closed and the air
The surface of the water supply cap 21 for the button is also flat.
It The opening surfaces of the air supply holes 22a and 22b face the operation section 3.
It may be slightly recessed and formed, or the air supply hole
If 22a and 22b can be closed, the outer air / water supply mouthpiece 21
The surface does not necessarily have to be flat.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

Next, the time of sending water will be described. Figure 2
As shown in (c), with the leak hole 23 closed, the button portion 26 is pushed until it abuts against the air / water feeding mouthpiece 21, so that the air feeding holes 22a, 22b are formed in the button portion 2
Blocked by 6. As a result, referring to FIG. 1, the pressure of the air supplied from the light source device (not shown) in the second water supply conduit 15, that is, the pressure in the water supply tank conduit 16 becomes higher than the predetermined pressure. The valve 18 is opened. As a result, the inside of the water supply tank 17 is pressurized, and the water in the water supply tank 17 passes through the water supply line 13 to the nozzle 11
Then, the incident surface of the objective lens system 7 is cleaned.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0031

[Correction method] Change

[Correction content]

As shown in FIG. 6, in the endoscope of the third embodiment, the nozzle 11 is connected to the air / water supply mouthpiece 21 of the air / water supply button 52 provided on the operation portion 3 and the first air supply conduit 12 is connected. Are connected. Air / water supply button 2 for air / water supply button 52
1 is adjacent to the first air supply line 12 and the second air supply line 53
Are connected and communicate with each other through their openings. The second air supply conduit 53 is inserted into the universal cable 4 and guided into the water supply tank 17 via the connector 5. On the other hand, the water supply tank 17 is provided with a third air supply conduit 55 communicating with the air supply port of the air supply device of the light source device (not shown) via the connector 5. In addition, the first water supply conduit 51 branched from the first air supply conduit 12 in the insertion portion 2 communicates with the air supply / water supply mouthpiece 21, and the air supply / water supply mouthpiece 21 further includes the first water supply conduit 21. Adjacent to the water conduit 51, the second water conduit 5
4 are connected and communicate with each other through their openings. The second water supply conduit 54 is inserted into the universal cable 4 and guided into the water supply tank 17 through the connector 5 so that the opening is inserted into the liquid in the water supply tank.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

In the cross section of the air / water supply button 52 shown in FIG. 7B, the elastic button portion 65 is detachably attached to the air / water supply mouthpiece 21 by the same method as in the first embodiment. The neutral position of the elastic button portion 65 is shown by the broken line in FIG. Therefore, in the third embodiment, as in the second embodiment, the air / water supply button 52 has one elastic button portion 6.
It is composed of 5. The elastic button portion 65 has an air / water feeding split portion 66 protruding from the inside at a position facing the water feeding holes 61, 62. Normally, the air / water feeding split portion 6 is provided.
The water supply holes 61 and 62 are closed by 6, and the water supply chamber 67 is formed on the right side in the figure by the air / water supply dividing unit 66. In addition, the leak hole 23 is provided in the division portion on the opposite side of the water supply chamber 67 formed by the air / water supply division portion 66,
A pressing portion 68 is provided outside the leak hole 23. The other structure is the same as that of the first embodiment.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

When the air and water are not supplied, as shown in FIG. 7B, the air supplied from the light source device (not shown) passes through the third air supply conduit 55 and the water supply tank 17 to the second side.
It is sent to the inside of the air / water supply button 52 through the air / air supply conduit 53 and the air / air supply hole 22a of the air / water supply mouthpiece 21. At this time, since the leak hole 23 of the elastic button portion 65 is not closed,
The air is leaked to the outside air through the leak hole 23 and is not sent to the first air sending conduit 12 through the air sending hole 22b, and thus is not sent into the lumen. Further, since the air / water supply division unit 66 constantly presses the air / water supply mouthpiece 21, air does not leak into the water supply chamber 67.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction content]

Further, the endoscope in each of the above embodiments has been described by taking an electronic endoscope having an image pickup element as an example, but the present invention is not limited to this, and an observation image is displayed from the tip to the eyepiece by an image guide or the like. It goes without saying that ordinary endoscopes for transmitting and observing may be used , and further, these endoscopes may be direct-viewing type or side-viewing type endoscopes.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0042

[Correction method] Change

[Correction content]

As described above, since the nozzle 11 is attached via the hood 76, the nozzle 11
Even when the nozzle 11 is clogged, the user can easily replace the nozzle 11 by removing the hood 76, and ultrasonic cleaning can be performed by the nozzle 11 alone. Also, introspection
By removing the nozzle 11 when cleaning the pipe line in the mirror 1, the orifice of the nozzle 11 is eliminated, and the flow rate of the cleaning liquid flows uniformly and sufficiently, so that the cleaning performance is improved.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction content]

Since the image pickup section 9 is configured as described above, even in the multilayer substrate 91 which has been made extremely small due to the thinning of the distal end forming section 6 of the endoscope 1 and the shortening of the hard section length, it is possible to obtain multiple layers. By providing the groove portion 95 on the substrate 91, the adhesive area between the multilayer substrate 91 and the sealing resin 96 can be increased and the adhesive strength can be increased. Therefore, the lead of the multilayer substrate 91 and the lead 83 of the ceramic substrate 8a of the CCD 8, for example, can be connected. It is possible to improve the peeling resistance of the sealing resin 96 due to the heat due to the soldering, the THB test, the gas sterilization, and the like. still,
The substrate does not have to be a multi-layer substrate, and a single layer substrate may be subjected to laser processing to form a groove.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Correction target item name] 0048

[Correction method] Change

[Correction content]

On the other hand, the insertion portion 2 has a curved portion 2a and a flexible portion 2b.
In the imaging section of the endoscope in which the tip forming section 6 is formed at the tip of the bending section 2a, as shown in FIG. 12A, the lead 83 of the ceramic substrate 8a of the CCD 8 is used for flexible circuit. The substrate 101 and the wiring substrate 102 are connected. The circuit board 101 has an IC chip 92 and a capacitor 104, and the IC chip 92 is sealed with a sealing resin 96. Circuit board 101 and wiring board 102
Is connected to the signal cable 106, and this signal cable 1
Reference numeral 06 is inserted through the endoscope 1 via the cable receiver 105 and is connected to the electric connector portion (not shown) from the connector 5. An image can be obtained by connecting this electric connector to a signal processing unit (not shown). Here, the signal cable 106 is not fixed to the cable receiver 105.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0051

[Correction method] Change

[Correction content]

An image pickup section 8 as a modified example of shortening the hard portion of the tip forming section 6 will now be described. As shown in FIG. 13, the leads 83 of the ceramic substrate 8a of the CCD 8
And the signal cable 106 are electrically connected by flip-chip bonding the IC chip 92 and the capacitor 104, and the lead 83 and the signal cable 106 are directly connected. A shield cover 110 is provided to protect these electric circuits, the inside of which is filled with a filler 103 , and the outside of the shield cover 110 is covered with a protective tube 100.

[Procedure Amendment 13]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 3

[Correction method] Change

[Correction content]

[Figure 3]

[Procedure Amendment 14]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

[Figure 5]

[Procedure Amendment 15]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 6

[Correction method] Change

[Correction content]

[Figure 6]

[Procedure Amendment 16]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

[Procedure Amendment 17]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 11

[Correction method] Change

[Correction content]

FIG. 11

[Procedure 18]

[Document name to be corrected] Drawing

[Name of item to be corrected] Fig. 13

[Correction method] Change

[Correction content]

[Fig. 13]

[Procedure amendment]

[Submission date] July 2, 1993

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Change

[Correction content]

[Figure 7]

Claims (1)

[Claims] 1. An endoscope comprising an insertion section to be inserted into a lumen, an operation section provided on the proximal end side of the insertion section, and an extension tube extending from the operation section, A first conduit that is inserted through the extension tube, a second conduit that is inserted through the insertion section, and is fixedly provided to the operation portion, and communicates the first conduit and the second conduit. Closure of the first line and the second line, which has a line communication member and a communication hole facing the line communication member and spaced apart from each other and communicating with the outside air. An endoscope comprising: a closing member capable of being pushed at a position, wherein the closing position of the conduit communication member is flush with the outer surface of the operation portion or at least protrudes from the outer surface. .