JP2603708Y2 - 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 an electronic endoscope which is inserted into a body cavity to observe the inside of the body cavity with an endoscope, and more particularly to an endoscope cover and an endoscope cover. The present invention relates to a cover-type endoscope apparatus which is inserted into an endoscope insertion channel formed in the endoscope, and is provided with an endoscope for an endoscope cover used integrally with the endoscope cover.

[0002]

2. Description of the Related Art An endoscope for observing the inside of a body cavity plays a large role in discovering various diseases, treating affected parts, and the like. Since this endoscope is used by inserting its insertion portion into a body cavity, it is necessary to wash and sterilize the same endoscope before using it for another subject. However, since it takes a long time to sufficiently clean and sterilize the endoscope, there are many problems in the efficiency of the use of the endoscope in the medical field. Therefore, in recent years, equipped with an air supply line, a water supply line, a suction line, a forceps channel, and the like necessary for endoscopic observation,
It has been proposed to use a disposable cover, which has been sufficiently cleaned and sterilized, mounted on an endoscope having only optical elements. In this case, since the cover is disposable, there is no need to consider the hygiene of the endoscope itself.

When an endoscope for an endoscope cover is mounted on the endoscope cover, the endoscope cover is held by an endoscope cover holder to facilitate the mounting operation. . Then, the endoscope for the endoscope cover is inserted into the endoscope insertion channel formed in the endoscope cover by blowing air through the endoscope cover expander to expand the endoscope. In this case, in order to supply air to the endoscope insertion channel through the endoscope cover expander, the air supply source of the endoscope cover expander and the air supply port formed in the endoscope cover are connected to the tube. The connection is made by road.

[0004]

As described above, the endoscope for the endoscope cover is inserted into the air-supplied endoscope insertion channel. In this case, the inside of the endoscope insertion channel is inserted. By closing the open end of the endoscope insertion direction,
It is necessary to expand the endoscope insertion channel. However, since the opening of the air inlet opening of the endoscope cover communicating with the air supply source of the endoscope cover expander was located at a position near the operator's hand side end of the endoscope insertion channel, the following: There was such a problem.

That is, when the endoscope for an endoscope cover is inserted deeply into the endoscope insertion channel, the endoscope for the endoscope cover closes the opening of the air supply opening of the endoscope cover. As a result, there is a problem that the endoscope insertion channel cannot be sufficiently inflated even if air is to be supplied. On the other hand, if the endoscope for an endoscope cover is inserted shallowly into the endoscope insertion channel to prevent the above-described state, the endoscope for the endoscope cover is inserted from the endoscope insertion channel because the insertion state is unstable. There was a problem that it came off.

[0006] The present invention is proposed to solve the above-mentioned problems, and the endoscope for the endoscope cover is stably introduced into the endoscope insertion channel without being detached from the endoscope insertion channel. An object of the present invention is to provide a cover-type endoscope apparatus which can supply sufficient air and smoothly insert an endoscope for an endoscope cover into an endoscope insertion channel.

[0007]

In order to achieve the above object, the present invention provides an endoscope cover and an endoscope insertion channel formed in the endoscope cover. In a cover type endoscope apparatus comprising an endoscope for an endoscope cover used integrally, an operator's hand side of an endoscope insertion channel formed in an endoscope cover, and an endoscope insertion channel An air supply port for connecting an air supply pipe for supplying air is formed, and the endoscope cover has substantially the same cross-sectional shape as the endoscope for an endoscope cover closer to the operator than the air supply port. Forming an introduction section for introducing the endoscope for use in a substantially closed state, and changing the length of the introduction section in the longitudinal direction of the endoscope cover from the distal end of the endoscope for the endoscope cover to the rotation axis of the curved nodal ring at the distal end. The length of the rigid portion up to the longitudinal direction of the endoscope cover for the endoscope cover is longer than the rigid portion. It is intended.

[0008]

As described above, the introduction portion of the endoscope for the endoscope cover has substantially the same cross-sectional shape as the endoscope for the endoscope cover,
The endoscope for an endoscope cover is formed so as to be introduced in a substantially sealed state, and the length of the introduction section in the longitudinal direction of the endoscope cover is changed from the distal end to the distal end of the endoscope cover endoscope. Since the length of the rigid portion up to the rotation axis of the endoscope is longer than that, the endoscope for the endoscope cover is able to supply air to the endoscope insertion channel in a stable introduction state while preventing it from coming off the endoscope insertion channel. Becomes

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall perspective view of an endoscope apparatus to which an endoscope for an endoscope cover according to the present invention (hereinafter, simply referred to as an endoscope for a cover) is connected. The cart 1 stores peripheral devices such as a light source device 2, a video processor 3, a fluid control device 4, an endoscope image recording device 5, and a monitor 6. The light source device 2 has a cover endoscope 7 connected thereto via a universal cord 8 and a built-in endoscope cover extension unit with a channel (not shown) (not shown). I have. A signal output from an image pickup device (not shown) provided at the distal end of the insertion section is provided to the cover endoscope 7 by the video processor 3.
Is connected.

The cover endoscope 7 is covered with a cover 10 that covers the cover endoscope 7. The cover 10 includes an insert cover 11, an operation cover 12, and a universal cover 13. 14 in the figure
Is a cover holder for holding the insertion portion cover portion 11 when attaching the insertion portion cover portion 11 to the cover endoscope 7. The cover holder 14 and the light source device 2 are connected by an expansion tube 15. In addition, the extension unit built in the light source device 2 expands the cover by blowing air into the insertion portion cover 11 in order to easily attach the cover endoscope to the insertion portion cover 11. (Inflator). As described above, the insertion portion cover portion 11 is held via the cover holder 14, and the cover endoscope 7 is inserted into the internal endoscope insertion channel.

The cover holder 14 is provided with two cover holders 16 and 17. The first cover holder 16 is for a clean area, and the second cover holder 17 is for a contaminated area. To be used. Then, when attaching the cover endoscope 7 to the insertion portion cover portion 11, the first
When removing the cover endoscope 7 from the insertion portion cover section 11 using the cover gripper 16 of the second embodiment, the second cover gripper 17 is used.
Is used. By doing this,
The contamination of the insert cover 11 by attaching the clean insert cover 11 to the contaminated cover gripper can be prevented.

FIG. 2 is a schematic diagram showing the inside of the light source device 2. The light source device 2 is provided with a lamp 18, and illumination light from the lamp 18 is transmitted to the distal end of the cover endoscope 7 via a light guide 19. Further, the light source device 2 is provided with an extension unit 20 to supply air to an endoscope insertion channel of the endoscope 7 for a cover. The expansion unit 20 has a pump 21, an expansion tube opening 22, and a conduit 23 for communicating the pump 21 with the expansion tube opening 22.

The conduit 23 is branched, and can be used as an air supply source for a conventional endoscope other than the cover endoscope 7 according to the present invention. When the extension unit 20 is used in the cover endoscope 7 according to the present invention, the check valve 24 provided in the branch conduit is closed to prevent air leakage. FIG. 3 shows the discharge pressure of the pump 21. Air is supplied by pulsation as shown, and the endoscope for cover is smoothly inserted while the endoscope insertion channel is expanded. When using a conventional endoscope,
The check valve 24 is pushed open by the air supply base of the endoscope to supply air. In this case, it is needless to say that it is necessary to close the pipe 23 to prevent air from leaking to the expansion tube 15.

FIG. 4 shows the cover gripper 16 shown in FIG.
It is an expanded sectional view of 17. The basic configuration of the first cover gripper 16 and the second cover gripper 17 is substantially the same, and two arms 24 and 25 respectively holding the insertion portion cover.
And an expansion tube mouth 2 for mounting an expansion tube mouth formed on an endoscope cover with a channel to be described later.
6, 27. In addition, the expansion tube mouth 26,
27, receiving bodies 28 and 29 are provided with springs 3 respectively.
It is provided while being urged by 0 and 31 in the direction of closing the opening of the mouthpiece of the dilation tube. Numerals 32 and 33 in the drawing denote sealing materials that sufficiently close the openings with the receiving bodies 28 and 29 and prevent the discharge of air when the extension unit is not used. In addition, the expansion tube mouths 26 and 27
Each is connected to a mouth 36 which opens in three directions via communication pipes 34 and 35, and is detachably connected to the expansion tube 15 via the mouth 36.

FIG. 5 is a sectional view showing a state in which the cover endoscope 7 is mounted on the insertion portion cover portion 11. Cover tip 3
7 has a light guide (not shown), a transparent window 39 provided at a position corresponding to the observation optical system 38,
In the vicinity of the window 39, an air supply opening toward the window 39
A water supply nozzle 40 is provided. Further, an insertion portion cover outer cover 41 made of a soft material for isolating the insertion portion of the cover endoscope 7 from the external environment is airtightly connected to the cover distal end portion 37. In addition, the insertion portion cover outer skin 41
At the operator's hand side, there is a forceps insertion port 42, and an endoscope operation section fixing port having an expansion tube port 44 for supplying air to the endoscope insertion channel 43 of the cover endoscope 7. 45 are provided.

An opening 46 for an endoscope insertion channel 43 provided in the insertion section cover 11 is formed on the operator's hand side of the endoscope operating section fixing mouth 45.
Pipes such as an air supply pipe 47, a water supply pipe 48, and a suction pipe 49, each of which has one end communicating with the air supply / water supply nozzle 40 of the cover tip 37, protrude.

At the operator's hand side of the endoscope operating portion fixing mouth portion 45, between the dilation tube mouth 44 and the opening 46 of the endoscope insertion channel 43, there is provided a cover endoscope. 7
Function as an introduction unit 50. The length l of the introduction portion 50 in the longitudinal direction of the endoscope cover is the length m of the rigid portion from the distal end of the endoscope 7 to the rotation axis of the curved nodal ring at the distal end in the longitudinal direction m of the endoscope cover. It is formed longer. Introduction unit 50
FIG. 6 shows a cross section taken along line AA of FIG. As shown in the drawing, the inside of the endoscope operation unit fixing mouth part 45 has 2
A space having a substantially semicircular cross section is formed. In the first space 51, an air supply line 47, a water supply line 48, and a suction line 49 are provided.
A substantially half-moon-shaped multi-lumen tube 52 in which is formed is housed. Further, in the second space 53, a cover endoscope 7 having substantially the same cross-sectional shape as the space 53 is provided so as to be freely inserted and removed while maintaining a substantially sealed state.

FIG. 7 is a sectional view taken along the line BB in FIG.
It is a cross-sectional view of the endoscope operating portion fixing mouth portion 45 where the expansion tube mouth 44 is located, and a second space 53 at this portion is formed larger than the AA cross-section,
The conduit 54 and the second space 53 inside the expansion tube mouth 44
The connection point 55 is further enlarged.

FIG. 8 is a sectional view taken along the line CC in FIG.
Similarly, two spaces each having a substantially half-moon cross section are formed inside the insertion portion cover outer cover 41. In the first space 56,
Similarly, a substantially half-moon-shaped multi-lumen tube 52 in which an air supply pipe 47, a water supply pipe 48, and a suction pipe 49 are formed is housed. Also, the second end in which the cover endoscope 7 is inserted / removed.
The space 57 is substantially the same as the second space shown in FIG. 6, but is larger than the space in FIG. 6 by the concave portion 58 formed on the inner wall.

Next, the operation of the present invention configured as described above will be described. In order to perform the endoscope inspection, first, the insertion portion cover portion 11 of the cover endoscope 7 is held by the first cover gripper 16 (FIG. 4). Then, the expansion tube mouth 44 formed on the insertion portion cover 11 (FIG. 5).
Pushes the receiving body 28 (FIG. 4) to release the sealing function of the sealing material 32, and the air supplied through the extension tube 15 flows into the endoscope insertion channel 43 through the extension tube mouth 44. Is sent to As described above, the insertion portion cover portion 11 of the cover endoscope 7 is attached to the first cover gripper 1.
6, air can be automatically supplied into the endoscope insertion channel 43.

In this manner, the cover endoscope 7 is inserted into the introduction section 50 through the opening 46 of the endoscope insertion channel while the air is being supplied into the endoscope insertion channel 43. In this case, as shown in FIG.
Is longer than the length m of the rigid part from the distal end of the cover endoscope 7 to the rotation axis of the curved nodal ring at the distal end.
Is inserted while being stably held by the introduction section 50. In addition, since the cross-sectional shape of the cover endoscope 7 and the introduction section 50 are substantially the same, and the cover endoscope 7 maintains a substantially sealed state with respect to the introduction section 50, the endoscope insertion channel 43 is supplied by air supply.
Swells, making it easier to insert the cover endoscope 7. Further, since the concave portion 58 is formed in the second space of the insertion portion cover outer cover 41 (FIG. 8), the endoscope insertion channel 4 is formed.
Even if the cover endoscope 7 is inserted in the inside 3, the air flow is secured and the cover endoscope 7 can be inserted to a deep part.

The present invention is not limited to the embodiment described above, and many modifications and variations are possible. For example, when the insertion portion cover portion 11 is attached to the insertion portion cover gripping portion 14, the insertion portion cover portion 11 is automatically inserted into the endoscope insertion channel 43 through the expansion tube mouth 44. May be provided in the insertion portion cover gripping portion 14 to activate the extension unit 20 in the light source device 2 by a signal from the sensor.

Although the light source device 2 is provided with the extension unit 20 in the present invention, a light source device 60 used in combination with a conventional endoscope 59 as shown in FIG. 9A can also be used. In this case, light is transmitted to the cover endoscope 7 via the illumination optical system 61 as shown in FIG. 9B, but the expansion tube 14 may be connected to the pump 63 via the adapter 62.

In the present invention, the expansion unit 20 and the like provided in the light source device 2 are used as an air supply source for supplying air into the endoscope insertion channel 43. However, the expansion unit 20 is provided in the cart 1 shown in FIG. The pump (not shown) incorporated in the insufflator 65 for connecting the provided insufflation tube 64 may be configured to be shared. Further, as an air supply source for supplying air into the endoscope insertion channel 43, a pump built in a heat probe unit, a high-frequency cautery power supply device, an ultrasonic endoscope observation device, an ultrasonic endoscope automatic water injection device, or the like. It may be configured to be used.

[0025]

As described above, according to the present invention, the introduction portion of the endoscope for the endoscope cover has substantially the same cross-sectional shape as the endoscope for the endoscope cover. The endoscope is formed so as to be introduced in a substantially sealed state, and the length of the introduction section in the longitudinal direction of the endoscope cover is set between the distal end of the endoscope for the endoscope cover and the rotation axis of the curved nodal ring at the distal end. Since the length of the rigid portion is longer than the length of the rigid portion, the endoscope for the endoscope cover to be inserted does not come off from the endoscope insertion channel, and sufficient air is supplied into the endoscope insertion channel in a stable introduction state. Thus, the endoscope for the endoscope cover can be smoothly inserted into the endoscope insertion channel.

[Brief description of the drawings]

FIG. 1 is a perspective view of the entire endoscope apparatus according to the present invention.

FIG. 2 is a schematic diagram of a light source device.

FIG. 3 is an explanatory diagram showing pulsation of a pump.

FIG. 4 is a sectional view of a cover grip.

FIG. 5 is a cross-sectional view showing a state in which an insertion portion cover is attached to the cover endoscope.

6 is a sectional view taken along line AA in FIG.

FIG. 7 is a sectional view taken along the line BB in FIG. 5;

8 is a sectional view taken along the line CC in FIG.

FIG. 9 is an explanatory view showing a part of a conventional endoscope apparatus and a state where the present invention is applied to a conventional apparatus.

FIG. 10 is a perspective view of the entire endoscope apparatus according to a modification of the present invention.

[Explanation of symbols]

 7 Endoscope for Cover 11 Insert Cover Part 37 Cover Tip 38 Observation Optical System 39 Window 40 Air / Water Supply Nozzle 41 Insert Cover Skin 42 Forceps Insertion Port 43 Endoscope Insertion Channel 44 Expansion Tube Mouth 45 Endoscope Mouth for fixing the mirror operation part 46 Opening 47 Air supply line 48 Water supply line 49 Suction line 50 Introducing part

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideo Ito 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Yoshihiro Iida 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Akira Suzuki 2-43-2 Hatagaya, Shibuya-ku, Tokyo O Olympus Optical Co., Ltd. (72) Inventor Osamu Mizita 2-43-2 Hatagaya, Shibuya-ku, Tokyo O Olympus Optical Co., Ltd. (56) References JP-A-3-29634 (JP, A) JP-A-3-29635 (JP, A) JP-A-3-37029 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] 1. An endoscope cover and an endoscope for an endoscope cover which is inserted into an endoscope insertion channel formed in the endoscope cover and used integrally with the endoscope cover. In the cover-type endoscope apparatus, an air supply port for connecting an air supply pipe for supplying air to the endoscope insertion channel is formed on the operator's hand side of the endoscope insertion channel formed in the endoscope cover. Further, an introduction portion having substantially the same cross-sectional shape as that of the endoscope for the endoscope cover and closer to the endoscope for the endoscope cover is formed closer to the operator than the air supply port. The length of the endoscope cover in the longitudinal direction of the introduction portion is set in the longitudinal direction of the endoscope cover for the rigid portion from the distal end of the endoscope for the endoscope cover to the rotation axis of the curved nodal ring at the distal end. A cover-type endoscope device having a length longer than a length.