JP3353932B2 - Cover type endoscope device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cover-type endoscope apparatus having an endoscope cover that can be used for endoscope covers having different lengths.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical field and the like. In an endoscope used in the medical field, when inserted into a living body, an observation window provided at a distal end portion of an insertion portion may become dirty due to adhesion of dirt, mucus, or the like of an affected part, and may not be sufficiently observed. . Therefore, the endoscope is provided with an air-supply / water-supply function of supplying liquid to the observation window for cleaning or blowing off remaining water by air supply by operation at the hand side. This air supply function is also used when air is supplied into a body cavity to facilitate observation of an observation site. This air supply and water supply are supplied via an air supply pipe and a water supply pipe.

In addition, the endoscope is provided with a suction pipe for sucking and discharging unnecessary dirt, mucus, etc., and further, it is necessary to collect tissue with a biopsy forceps, perform a treatment with a treatment tool, and the like. In some cases, a forceps channel (treatment instrument channel) is provided to perform the operation.

[0004] In such endoscopes used in the medical field, those once used for patients and the like are subjected to washing or sterilization treatment in order to surely prevent infectious diseases and the like.

However, it takes time to completely clean and disinfect, not only the workability is poor, but also the use efficiency of the endoscope decreases.

In particular, since each of the above-mentioned conduits communicates with the outside of the body through the distal end opening that opens into the body cavity of the patient through the conduit of the insertion portion, the distal end opening and the inside of the conduit are also completely washed. Had to be disinfected, and the work was troublesome.

For this reason, recently, a so-called cover-type endoscope, which covers the endoscope itself with an endoscope cover and discards the endoscope cover for each floor to simplify cleaning and disinfection after use, has been developed. Has been adopted.

According to this cover-type endoscope, a conduit opening into the body cavity of the patient is provided on the endoscope cover side, and observation means and illumination means which do not open into the body cavity of the patient are provided on the endoscope side. By covering with an endoscope cover, even in a very expensive video endoscope using lighting means and a solid-state imaging device (SID), the video endoscope does not become dirty after use, and the endoscope is used. By discarding the mirror cover, cleaning and disinfection can be simplified.

A so-called cover type endoscope of this kind is disclosed in, for example, Japanese Patent Publication No. 2-4734 (US Pat.
722) or U.S. Pat. No. 3,162,190.

[0010]

As shown in FIG. 7, in this type of cover type endoscope, an endoscope cover 1 is provided.
A locking groove 103 is formed in the inner periphery of the endoscope operating portion fixing mouth portion 102 provided on the upper part of the endoscope 01, and an endoscope 104 for the endoscope cover to be inserted into the endoscope cover 101. A locking portion 105 that engages with the locking groove 103 is formed on the outer periphery. When the locking portion 105 is engaged with the locking groove 103, the endoscope cover 101 can be connected to the endoscope. It is fixed to the endoscope 104 for a mirror cover.

[0011] The length of the insertion portion 104a of the endoscope 104 for the endoscope cover is determined for each use and the affected part to be used. The mirror cover 101 must also be selected according to the endoscope 104 for the endoscope cover to be used.

That is, the insertion portion 1 of the endoscope cover 101
When the insertion portion 104a of the endoscope 104 for an endoscope cover is shorter than the length of 01a, a gap is formed between the tip of the insertion portion 104a and the tip of the insertion portion 101a of the endoscope cover 101, The near point cannot be observed, and the illumination light is reflected within the cover lens of the endoscope cover 101 and enters the observation optical system, causing an optical defect such as flare.

On the other hand, the insertion portion 101 of the endoscope cover 101
Insertion part 1 of endoscope 104 for endoscope cover with respect to length of a
04a is long, the locking groove 10 of the endoscope cover 101
3 is not engaged with the locking portion 105 of the endoscope 104, so that the endoscope cover 101 cannot be fixed to the endoscope 104.

For this reason, the endoscope cover 101 corresponding to the endoscope 104 for the endoscope cover to be used conventionally must be selected one by one, and not only the preparation work is troublesome, but also various kinds of endoscope covers 101 are required. It had to be prepared in advance and the management was complicated.

It should be noted that it is technically difficult to manufacture the endoscope cover endoscope 104 and the endoscope cover 101 with the same length, even for the same use. It also occurs due to tolerance variations between the endoscope cover endoscope 104 and the endoscope cover 101 to be used.

The present invention has been made in view of the above circumstances, and a single endoscope cover can cope with various types of endoscope covers having different lengths and variations in tolerance. Another object of the present invention is to provide a cover-type endoscope apparatus which can shorten the preparation work of the endoscope, is easy to handle, and is easy to manage by reducing the types of endoscope covers.

[0017]

In order to achieve the above object, a cover type endoscope apparatus according to the present invention comprises: an endoscope cover;
It has a flexible insertion part to be inserted into this endoscope cover for use.
An endoscope for an endoscope cover to be provided, and the endoscope cover is fitted and adhered to the endoscope for the endoscope cover ,
The present invention is characterized in that length adjusting means is provided which can correspond to endoscopes for endoscope covers having different lengths.

[0018]

In the above configuration, when endoscopes having different lengths are mounted on the endoscope cover , the length is adjusted by adjusting means provided on the endoscope cover.

[0019]

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

1 to 3 show a first embodiment of the present invention.
FIG. 1 is a cross-sectional view showing a state in which endoscopes for endoscope covers having different lengths are mounted on the endoscope cover, FIG. 2 is a cross-sectional view of an insertion portion of the cover-type endoscope, and FIG. 1 is an overall schematic diagram of a mirror device.

As shown in FIG. 3, the cover type endoscope apparatus 1 is an endoscope cover with a channel (hereinafter abbreviated as "endoscope cover") 2A and an endoscope with a channel mounted on the endoscope cover 2A. An endoscope for a mirror cover (hereinafter abbreviated as “cover endoscope”) 2B, an endoscope with a channel endoscope-cover type endoscope (hereinafter abbreviated as “cover-type endoscope”) 2B,
Light source device 3 that supplies illumination light to endoscope 2B for the cover
A video processor 4 for performing signal processing on image pickup means built in the cover endoscope 2B;
A fluid control device 5 that performs air supply and water supply via the tube of A, and an endoscope cover expander with a channel used for attaching the cover endoscope 2B to the endoscope cover 2A (hereinafter referred to as “the endoscope cover expander”). An abbreviated device) 6 and a monitor 7 for displaying a video signal processed by the video processor 4
The light source device 3, the video processor 4, the fluid control device 5, and the dilator 6 are housed in a cart 8, and a monitor 7 is mounted on an upper surface of the cart 8.

When an endoscopic examination is performed, the clean endoscope 2B is covered with a clean endoscope cover 2A, and after the examination, the endoscope cover 2A is discarded.
The cover endoscope 2B is a new clean endoscope cover 2A.
Covered by and used repeatedly.

When the cover endoscope 2B is mounted on the insertion portion cover 11A constituting the endoscope cover 2A, the cover holder 10 shown in FIG. 1 is used, for example, the base end of the insertion portion cover 11A. With the side hooked on the cover holding member 10a of the cover holder 10, the endoscope insertion portion 11B of the cover endoscope 2B is mounted.

The cover endoscope 2B has an elongated and flexible endoscope insertion portion (hereinafter abbreviated as "insertion portion") 11B.
An endoscope operation unit (hereinafter abbreviated as “operation unit”) 12B formed on the proximal end side of the insertion unit 11B;
B, a universal cord 13B extending from the side of B, an illumination optical system and an observation optical system for forming a subject image on the image pickup means are provided at the tip of the insertion portion 11B. By connecting the connector 15 provided at the end of the light source device 3 to the light source device 3, a light guide (not shown) through which illumination light from a lamp inside the light source device 3 passes through the universal cord 13B and the insertion portion 11B. Is supplied to the above-mentioned illumination optical system.

The illumination light supplied to the illumination optical system is applied to the end face of the cover distal end 23A of the insertion section cover 11A opposite to the illumination window (not shown) of the distal end 23B of the insertion section 11B. The light is emitted to the subject side ahead through the transparent plate of the provided cover illumination window 25A.

The illuminated subject such as a diseased part includes a transparent plate of a cover observation window 26A provided adjacent to the cover illumination window 25A, and a cover endoscope disposed inside the cover observation window 26A so as to face the cover observation window 26A. A solid-state imaging device (SID) disposed on a focal plane via an observation optical system provided on an insertion portion 11B of the mirror 2B
An optical image is formed on the imaging surface of the imaging means.

The optical image formed on the image pickup surface is photoelectrically converted, input to the video processor 4 via the signal cable 15a inserted through the insertion portion 11B and the universal cord 13B, and subjected to signal processing. A video signal is generated, and the video signal is input to the monitor 7 to display a subject image on a display screen.

The operation unit 12B and the cover endoscope 2B are provided with an air supply / water supply (or water supply only) switch 1.
8, suction switch 19, and the image switching switch及 beauty bending operation knob (not shown) is provided, by operating the respective switches and knobs, gas supply and water supply (or water only) and , Suction, or image switching such as freeze and release, and the bending angle of the distal end bending portion provided in the insertion portion 11B are set.

On the other hand, the endoscope cover 2A is composed of an insertion portion cover 11A, an operation portion cover 12A, and a universal code cover 13A which cover the insertion portion 11B, the operation portion 12B, and the universal cord 13B of the cover endoscope 2B, respectively. It is configured.

The insertion portion cover 11A includes an insertion portion cover outer cover 21A that covers the insertion portion 11B, and an endoscope operation portion fixing mouth portion 22A that is airtightly provided at a base end of the insertion portion cover outer cover 21A. And a cover tip 23A provided hermetically at the end of the insertion portion cover outer cover 21A.

An air supply / water supply line 27A, a suction line 29A, and the cover endoscope 2B are provided in the insertion portion cover portion 11A.
The endoscope insertion channel 39A and the like for inserting (mounting) the insertion portion 11B are formed. The air / water supply pipe 27A is provided with a nozzle 24 provided on the end face of the cover tip 23A.
A, and the tip opening of the nozzle 24A faces the outer surface of the cover observation window 26A.

The proximal ends of the air supply / water supply conduit 27A and the suction conduit 29A extend above the endoscope operation unit fixing port 22A, and together with the universal cord 13B, the universal cord cover 13A. The water supply line 28A is extended toward the fluid control device 5 in a covered state, and the water supply line 28A is connected to the water supply tank 30.
And the air supply / water supply line 27A is provided with an air supply pump.
(Not shown), and the path is branched to reach the upper part of the water supply tank 30, and the suction line 29A is further connected to a suction pump (not shown). Also, the suction line 2 is attached to the cover tip 23A.
A forceps outlet 30A communicating with 9A is opened. Further, a forceps insertion port 32A communicating with the suction conduit 29A is provided in the endoscope operating section fixing opening 22.

An extension tube mouth 38 for connecting an extension tube 37 connected to the dilator 6 is provided on a side surface of the endoscope operation portion fixing mouth 22A.

Further, an end 22A for fixing the endoscope operating section is provided.
The opening 4 of the endoscope insertion channel 39A is provided on the upper surface of
0A is provided.

The expander 6 normally continues to supply air. Therefore, when the function of the expander 6 is not used,
As shown in FIG. 3, the distal end of the expansion tube 37 is not connected to the expansion tube opening 38, but communicates with the outside air.
When the cover endoscope 2B is to be inserted into the insertion portion cover 11A, the end of the extension tube 37 is pushed into the extension tube mouth 38 so as to be airtightly inserted (fitted) and connected. Then, the air supply from the dilator 6 is sent to the endoscope insertion channel 39A through the expansion tube mouth 38, and the endoscope insertion channel 39A is expanded, thereby facilitating the insertion of the insertion portion 11B.

As shown in FIG. 1, an elastic body as a length adjusting means is provided on the inner periphery of the endoscope operation section fixing mouth 22A provided on the hand side of the insertion section cover 11A. A fitting portion 41 is provided, and a locking portion 42 fitted and in close contact with the fitting portion 41 is connected to the fitting portion 4 of the endoscope 2B.
1 is provided at a site corresponding to the number 1. The fitting portion 41 is provided continuously from the open end of the endoscope operating portion fixing mouth portion 22A toward the distal end.

Next, the operation of the above embodiment will be described.

First, when the cover endoscope 2B is inserted (attached) to the insertion portion cover portion 11A of the endoscope cover 2A,
With a semicircular cover holding member 10a provided on the holding tool 10,
The endoscope operation unit fixing mouth body 22A is held.

Thereafter, the distal end of the dilation tube 37 is connected to the dilatation tube mouth 38, and the insertion portion 11B of the endoscope 2B is inserted into the endoscope insertion channel 39A through the opening 40A.
When the tip of the insertion part 1 is inserted, the opening 40A
1B, the air is fed into the endoscope channel 39A, and the endoscope insertion channel 39A expands.

Then, the distal end of the insertion portion 11B is inserted until it comes into contact with the cover observation window 26A provided at the distal end of the endoscope insertion channel 39A.

At this time, the engaging portion 42 provided on the cover endoscope 2B is engaged with the fitting portion 41 provided on the inner periphery of the endoscope operation portion fixing mouth 22A of the insertion portion cover portion 11A. It is positioned by sliding, and is fixed in a tightly fitted state by friction.

As a result, as shown in FIG. 1A, when the cover endoscope 2B having the short insertion portion 11B is attached to the insertion portion cover portion 11A, the cover endoscope 2B
Is locked at a position at the back of the endoscope operating portion fixing mouth portion 22A of the insertion portion cover portion 11A. Also,
As shown in FIG. 2B, when the long cover endoscope 2B of the insertion portion 11B is attached to the insertion portion cover portion 11A,
The locking portion 42 of the cover endoscope 2B is fitted and fixed on the opening end side of the endoscope operation portion fixing mouth 22A.

As described above, a plurality of cover endoscopes 2B having different lengths of the insertion portion 11B can be steplessly handled by the common insertion portion cover portion 11A, which is economical. Further, the insertion portion cover portion 1 is formed by the fitting portion 41.
It is possible to cope with a variation in tolerance between the endoscope 1A and the endoscope 2B.

Note that the locking portion 4 is attached to the cover endoscope 2B.
By providing a plurality of 2, the insertion portion cover 11A can be firmly held and fixed by the cover endoscope 2B.

When the distal end of the expansion tube 37 is removed from the expansion tube mouth 38 after the insertion operation is completed, the endoscope insertion channel 39A contracts due to its elasticity (the outer diameter of the insertion portion cover outer skin 21A becomes smaller). The outer surface of the insertion portion 11B, that is, the outer skin of the insertion portion 11B is almost in close contact with the inner surface.

Thereafter, the operation section 12B of the cover endoscope 2B is covered with the operation section cover 12A, and the opening end thereof is connected to the upper end of the endoscope operation section fixing mouth 22A of the insertion section cover section 11A. At the same time, the universal cord 13B is covered with the universal cord cover 13A, and the inspection is performed with the cover endoscope 2B sealed.

FIG. 4 is a sectional view showing a main part of an endoscope for an endoscope cover according to a second embodiment of the present invention mounted on the endoscope cover.

In this embodiment, a plurality of steps of locking the locking portion 42 of the cover endoscope 2B on the inner periphery of the endoscope operating portion fixing mouth 22A of the insertion portion cover portion 11A. Groove 43
Are provided as length adjusting means.
Thus, the locking portion 42 can be locked with a good moderation feeling.

The endoscope operating section fixing mouth section 22 is also provided.
An elastically deformable slide portion 44 is formed between the locking grooves 43 formed on the inner periphery of A. When the cover endoscope 2B is slid, the slide portion 44 is elastically deformed. To pass through the locking portion 42.

FIG. 5 is a sectional view showing a main part of an endoscope for an endoscope cover according to a third embodiment of the present invention mounted on the endoscope cover.

In this embodiment, the end portion 22A for fixing the endoscope operation portion of the insertion portion cover portion 11A is connected to the first mouth portion 45A on the opening end side and the insertion portion cover outer cover 21 (see FIG. 1). And a second mouth portion 46A connected to the both mouth portions 45A,
46A, a telescopic part 47A made of a bellows-shaped tube or the like as a length adjusting means continuously connected between the 46A and the endoscope 2B. When inserted from the fixing mouth 22A, the insertion end of the cover endoscope 2B is inserted into the insertion portion cover portion 11A.
A, which comes into contact with the inner surface of the distal end of A, the insertion portion cover outer skin 21A of the insertion portion cover portion 11A is pulled, and the elastic portion 47A is extended, so that the locking provided around the inner periphery of the first mouth portion 45A. Until the locking portion 43 provided on the cover endoscope 2B is engaged with the groove 43, the cover endoscope 2B is relatively inserted into the insertion portion cover portion 11A.

As a result, one insertion portion cover 11A can be shared by a plurality of types of cover endoscopes 2B having different lengths of the insertion portion 11B.

FIG. 6 is a sectional view showing a main part of an endoscope for an endoscope cover according to a fourth embodiment of the present invention mounted on the endoscope cover.

In this embodiment, the first mouth portion 45A of the endoscope operation portion fixing mouth portion 22A shown in the third embodiment is described.
And the second mouth portion 46A are integrally provided with slide portions 48A and 49A, which are length adjusting means capable of overlapping each other, and the slide portion 48A on the first mouth portion 45A side is provided integrally. A first locking groove 50A is provided on the base side, and a second locking groove 51A is provided on the distal end side of the slide portion 48A.
A is installed.

On the other hand, a ridge 52A which selectively engages with the locking grooves 50A and 51A is provided on the upper end of the slide portion 49A on the side of the second mouth portion 46A.

As shown on the left side of FIG. 6, when the length of the insertion portion 11B of the cover endoscope 2B is short, the ridge 52A provided on the slide portion 49A on the second mouth portion 46A side.
Into the first locking groove 50A provided in the first mouth 45A.
, The entire length of the insertion portion cover 11A that covers the insertion portion 11B of the cover endoscope 2B is reduced, and the protrusion 52A is engaged with the second locking groove 51A. If they are combined, the length of the insertion portion cover portion 11A becomes longer, and as a result, one endoscope cover 11A can cope with two types of cover endoscopes 2B having different lengths. .

As shown in FIG. 8, a switching section 57 is interposed between the dilator 6 and the expansion tube 37, and a leak tester 58 is connected to the switching section 57,
The leak tester 58 can detect a damaged portion such as a pinhole of the endoscope insertion channel 39A of the insertion portion cover 11A.

That is, the space between the insertion portion cover 11A and the cover endoscope 2B inserted into the insertion portion cover 11A is provided between the insertion portion cover 11A and the endoscope operation portion fixing mouth 22A. Is fixed by a sealing member 56 made of an elastic material such as rubber provided at the opening end of the opening, and the inside is kept airtight.

When attaching the cover endoscope 2B to the insertion portion cover 11A, the extension tube 37 extending from the switching portion 57 is attached to the extension tube mouth 38 provided on the insertion portion cover 11A. Then, air is supplied from the dilator 6 selected by the switching section 57 into the insertion section cover section 11A, and the insertion section cover section 11A is expanded to mount the cover endoscope 2B.

Thereafter, when it is confirmed that the insertion portion cover portion 11A has been fixed to the cover endoscope 2B, the switching portion 57 allows the leak tester 58 to communicate with the expansion tube 37. In the leak tester 58, air is once supplied into the endoscope insertion channel 39A to pressurize the endoscope insertion channel 39A, and thereafter, pressure fluctuation in the endoscope insertion channel 39A is detected. Check if the airtightness is maintained.

When it is confirmed that the airtightness is maintained, the insertion portion cover 11A can be used. Therefore, by removing the expansion tube 37 from the expansion tube opening 38, the insertion portion cover 11A can have its own elastic force. The endoscope insertion channel 39A is brought into close contact with the outer skin of the insertion portion 11B of the endoscope 2B.

On the other hand, if the airtightness in the endoscope channel 39A is incomplete, it may be damaged.
The insertion portion cover 11A is replaced.

As described above, conventionally, the endoscope insertion portion 11A
Since the gap between the cover endoscope 2B and the cover endoscope 2B is not airtight at the time of mounting, it is difficult to easily detect a damaged portion. However, the insertion portion cover portion 11A and the insertion portion cover portion 1B are difficult to detect.
By sealing the space between the cover endoscope 2B inserted into the cover endoscope 2B and the cover endoscope 2B with the seal member 56, the broken state can be easily confirmed.

As shown in FIG. 9, instead of the expansion tube opening 38, the ventilation used in the endoscope without a cover is provided to the opening 22A for fixing the endoscope operating section of the insertion section cover 11A. The base 59 is provided, and the leak tester 58 and the dilator 6 are provided with a connector 58 which can be connected to the vent base 59.
a and 6a are provided. The vent cap 59 is connected to the connector 5.
Communication is made only when one of 8a and 6a is connected.

According to this embodiment, after the connector 6a on the dilator 6 side is attached to the vent cap 59, the connector 58a on the leak tester 58 side is attached to the vent cap 59 even if the connector 58a on the endoscope insertion channel 39A is inserted. Airtightness is maintained. Further, since the vent cap 59 is common to that used in an endoscope without a cover, an air supply device or a leak tester of the endoscope without cover can be connected to the vent cap 59, so that the versatility is excellent.

As shown in FIG. 10, the mouthpiece 22A for fixing the endoscope operating section is provided with a vent cap 5 for a leak tester.
9a and the dilator vent cap 59b may be provided separately. Further, as shown in FIG. 11, the seal member 56 may be provided integrally with the insertion portion cover portion 11A.

As shown in FIG. 12, the inner diameter D1 of the endoscope insertion channel 39A of the insertion portion cover portion 11A,
The inner diameter D2 of the opening 40A of the endoscope insertion channel 39A formed on the endoscope operating section fixing mouth 22A,
By setting D1> D2, the endoscope insertion channel 39 is set.
When the cover endoscope is inserted into the
And the thinner insertion portion cover 2
The force applied to 1A is attenuated, and as a result, damage to the outer cover 21A of the insertion portion can be prevented.

On the other hand, conventionally, since the diameter from the opening 40A to the endoscope insertion channel 39A is set to be substantially the same, the insertion portion of the cover endoscope is inserted into the insertion portion cover portion 11A. In such a case, there is a risk of damage, and skill is required. In addition, as shown in FIG. 13, an insertion portion cover portion 11A having no endoscope operation portion fixing mouth portion 22A and covering only the insertion portion of the endoscope for cover may be used. The opening portion 40A of the insertion portion cover portion 11A is formed thick, and the inner diameter D1 of the endoscope insertion channel 39A and the inner diameter D2 of the opening portion 40A are
If D1> D2, the same effect as described above can be obtained.

As shown in FIG. 14, a fitting portion 6 made of an elastic material such as rubber is provided on the inner periphery of the opening 40A formed in the endoscope operating portion fixing mouth portion 22A of the insertion portion cover portion 11A.
0, the fitting portion 60 is connected to the cover endoscope 2B.
Of the insertion portion cover portion 11A
Can be fixed to the cover endoscope 2B.
At this time, the distal end portion 23B of the insertion portion 11B of the endoscope 2B is connected to the cover distal end portion 2A of the insertion portion cover portion 11A.
3A is in contact with the tip surface on the inner surface side.

Conventionally, the insertion portion 11 of the cover endoscope 2B is used.
The endoscope cover 11A is fixed to the cover endoscope 2B by fitting the distal end portion 23B of B to the inner peripheral surface of the cover distal end portion 23A of the insertion portion cover portion 11A. In order to perform the covering operation without contaminating the insertion portion cover portion 11A, as described above, the endoscope insertion portion of the cover endoscope 2B is hooked on the cover holding member 10a of the cover holding device 10. 11B, it is necessary to attach the insertion portion distal end 23B of the cover endoscope 2B to the inner peripheral surface of the cover distal end 23A of the insertion portion cover 11A in this state. I was

However, as shown in FIG. 14, if the insertion portion cover portion 11A is fixed on the operation portion 12B side of the cover endoscope 2B, the cover endoscope 2B can be fixed at the time of mounting. Insert the distal end portion 23B of the insertion portion 11B into the insertion portion cover portion 1.
Since the mounting is completed only by pressing until the inner surface of the cover distal end portion 23A of 1A comes into contact with the distal end surface, the mounting workability is good.

Further, as shown in FIG. 15, a contact portion 61 is formed at the cover distal end 23A for holding the transparent plate of the cover observation window 26A with the distal end surface of the insertion end 23B of the endoscope 2B. By doing so, the distal end surface of the insertion portion distal end portion 23B does not come into contact with the transparent plate of the cover observation window 26A, so that the transparent plate can be prevented from being damaged.

[0073]

As described above, according to the present invention,
Since the endoscope cover is provided with length adjusting means that can accommodate endoscopes for endoscope covers of different lengths, a single endoscope cover can be used for various types of endoscope covers having different lengths. The endoscope can be used, the preparation of the endoscope can be shortened, the handleability is good, and the management can be facilitated by reducing the types of the endoscope cover. Further, the length adjusting means can cope with variations in tolerance between the endoscope cover and the cover endoscope.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a state in which endoscopes for endoscope covers having different lengths according to a first embodiment of the present invention are mounted on the endoscope cover;

FIG. 2 is a sectional view of an insertion portion of the cover type endoscope according to the first embodiment of the present invention.

FIG. 3 is an overall schematic diagram of a cover type endoscope apparatus according to a first embodiment of the present invention.

FIG. 4 is a cross-sectional view of a main part in a state where the endoscope for an endoscope cover according to the second embodiment of the present invention is mounted on the endoscope cover;

FIG. 5 is a cross-sectional view of a main part in a state where the endoscope for an endoscope cover according to a third embodiment of the present invention is mounted on the endoscope cover;

FIG. 6 is a cross-sectional view of a main part of an endoscope for an endoscope cover according to a fourth embodiment of the present invention mounted on the endoscope cover;

FIG. 7 is a cross-sectional view of a main part in a state where a conventional endoscope for an endoscope cover is mounted on the endoscope cover.

FIG. 8 is a schematic diagram of a main part of a cover-type endoscope device.

FIG. 9 is a schematic diagram of a main part of a cover-type endoscope device according to a modification of FIG. 8;

FIG. 10 is a schematic diagram of a main part of a cover-type endoscope apparatus according to a modification of FIG. 10;

FIG. 11 is a schematic view of a main part of an operation section and an insertion section cover section of the cover type endoscope.

FIG. 12 is a partial cross-sectional side view of the insertion portion cover portion.

FIG. 13 is a partial cross-sectional side view of an insertion portion cover according to another embodiment.

FIG. 14 is a schematic view showing a mounted state of an endoscope cover and a cover-type endoscope.

FIG. 15 is an enlarged sectional view of a distal end portion of an endoscope cover.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cover type endoscope apparatus 2A ... Endoscope cover 2B ... Endoscope for endoscope cover 41, 43, 47A, 48A, 49A ... Length adjustment means

Continuation of the front page (72) Inventor Akira Suzuki 2-43-2 Hatagaya, Shibuya-ku, Tokyo O-Limpus Optics Kogyo Co., Ltd. (72) Inventor Hideo Ito 2-43-2 Hatagaya, Shibuya-ku, Tokyo O-limpus Optics Within the Industrial Co., Ltd. (72) Minoru Yamazaki, Inventor Minoru 2-43-2, Hatagaya, Shibuya-ku, Tokyo Oh Rinpa Optical Industry Co., Ltd. Inside Optical Industry Co., Ltd. (72) Inventor Yasuhito Kura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Industry Co., Ltd. (56) References JP-A-4-361731 (JP, A) 6-38921 (JP, A) JP 2-54734 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 1/00-1/32

Claims (1)

(57) [Claims] 1. An endoscope cover comprising: an endoscope cover; and an endoscope for an endoscope cover having a flexible insertion portion used by being inserted into the endoscope cover, wherein the endoscope cover includes the endoscope. Mates with endoscope for mirror cover
A cover-type endoscope apparatus, wherein the cover-type endoscope device is provided with a length adjusting means which can cope with endoscopes for endoscope covers of different lengths while being in close contact with each other.