JP3353934B2 - Endoscope device with endoscope cover system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope device of an endoscope cover type having an endoscope cover mounted on an endoscope.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in the medical field and the like. When performing an endoscopy using an endoscope used in this medical field, it is necessary to use a clean endoscope that has been sufficiently washed and disinfected before the inspection.

However, endoscopes are often provided with air / water supply conduits and forceps channels.
There is a problem that it takes a long time to completely clean and sterilize the inside of these tubes after use. If the sterilization treatment is not performed sufficiently, the effect cannot be expected. Therefore, the treatment must be performed for a long time, thereby reducing the use efficiency of the endoscope and making the operation of the sterilization treatment troublesome. There was a problem that it is.

[0004] In view of such problems, the endoscope body is used with the endoscope cover covered with the endoscope cover, and after use, the endoscope cover alone is disposable and replaced. An endoscope device of an endoscope cover type which does not need to be subjected to cleaning or sterilization processing so as not to make the mirror main body dirty is disclosed in, for example, Japanese Patent Publication No. 2-54534, US Pat. No. 3,162,190, US Pat. No. 5,050,585, It is proposed in U.S. Pat. No. 4,646,722.

More specifically, in an endoscope for an endoscope cover to which such an endoscope cover is attached, the insertion portion is cleaned and sterilized in advance, and the endoscope cover is used for the endoscope. Inspection, treatment, and the like are performed by inserting the endoscope into the body cavity of the patient while covering the insertion portion of the mirror, so that the endoscope does not directly touch the body cavity of the patient. After use, the endoscope cover covering the endoscope body is removed and discarded. In this way, by disposing the endoscope cover for each patient, the endoscope can be cleaned,
It is very simple because there is no need to disinfect.

[0006] In the above-mentioned endoscope cover, the conventional cover outer cover for covering the insertion portion of the endoscope has been constituted by a thin film member formed of a soft material. For example, Japanese Patent Publication No. 2-47434 discloses a hard cover fitted to cover a distal end portion of an endoscope, and a flexible cylindrical cover provided on a hand side of the hard cover and covering an insertion portion. An endoscope cover made of a material has been proposed.

[0007] Such an endoscope with an endoscope cover system is as follows.
Is used for various applications, for example, to observe the abdominal cavity, a rigid endoscope with a curved endoscope with an endoscope cover,
In some cases, a patient is inserted through a rigid sheath such as a trocar pierced into the abdomen of a subject to observe the inside of the abdominal cavity. In such a case, it is common to inflate the abdominal cavity by insufflation for easy observation, thereby securing a visual field. At this time, it is necessary to prevent the gas sent into the abdominal cavity from leaking from between the rigid sheath and the endoscope cover. Therefore, an airtight packing is provided in the rigid sheath so as to close a gap formed between the hard sheath and the endoscope cover to keep the airtight.

However, since the conventional laparoscope is mounted on the flexible endoscope cover, the laparoscope is mounted on the rigid sheath or when the laparoscope is mounted on the rigid sheath. When operating with, the sliding part between the cover skin of the endoscope cover and the airtight packing is subjected to frictional force, so when it is forcibly inserted or removed or operated, wrinkles etc. are generated, and further force is applied In some cases, there was a possibility of damage such as perforation. For this reason, it is necessary to carefully insert or remove or operate the rigid sheath so that such a situation does not occur.

[0009]

As described above, a conventional endoscope device of the conventional endoscope cover type is used when the rigid sheath is attached to the endoscope with the endoscope cover attached, or when the endoscope is attached to the endoscope. When operating the endoscope with the mirror cover attached to the rigid sheath, the endoscope may be damaged if excessive force is applied. In order to avoid this, it was necessary to carefully insert or remove or operate.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an endoscope having an endoscope cover system in which an insertion portion covering portion is not damaged by a frictional force even when it comes into contact with another member. It is intended to provide a device.

[0011]

SUMMARY OF THE INVENTION In order to achieve the above object, an endoscope device of the endoscope cover type according to the present invention comprises an endoscope having an insertion portion extending from an operation portion, and an endoscope having the same. an endoscope cover with an insertion portion covering portion that covers the insertion portion of the mirror, the
Inserted with the endoscope cover attached to the endoscope insertion section
Cylindrical rigid sheet with airtight packing inside
And the hermetic packing part of the insertion part covering part.
And the portion in contact, is provided a hard coating portion formed of a material having a rigid enough not damaged by friction with other members.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 relate to a first embodiment of the present invention, and FIG. 1 is a perspective view illustrating an entire configuration of an endoscope cover-type endoscope apparatus using a rigid endoscope with a curved distal end for an endoscope cover; FIG. 2 is a longitudinal sectional view showing an insertion portion cover portion of an endoscope cover (hereinafter abbreviated as a cover) attached to a rigid endoscope with a curved distal end for an endoscope cover, and FIG. 3 is an endoscope with the cover attached. FIG. 4 is a cross-sectional view showing a state in which a rigid endoscope with a curved distal end for a cover is inserted into the abdominal cavity via a rigid sheath, and FIG. 4 shows a connection between an insertion section cover and an operation section cover and a connection between a universal cord cover and an operation section cover. FIG. 5 is an enlarged side view of a rigid endoscope with a curved distal end for an endoscope cover showing a portion, and FIG. 5 is a side view showing the rigid endoscope with a curved distal end for an endoscope cover.

In the endoscope apparatus of the first embodiment, a movable cart 1 processes, for example, a light source apparatus having a light source for illuminating a subject, and a signal from an image pickup element at the end of the endoscope. A video processor 3, a fluid control device 4 for controlling air supply / water supply, etc., a monitor 6 for observing an image and the like are housed or mounted thereon. A rigid mirror (hereinafter abbreviated as a curved rigid mirror for a cover) 7 is connected to form a main part thereof.

The bending rigid mirror 7 for a cover is a rigid mirror that can be bent at the distal end side of the insertion portion. As shown in FIG. 5, an elongated insertion portion 17 is extended from the operation portion 16 on the hand side. From the side of the operation unit 16, a universal cord 18
Has been extended. The insertion portion 17 includes a rigid portion 27, a bending portion 28, and a distal end configuration portion 29 from the hand side to the distal side, and the bending portion 28 is operated to be bent by the bending operation knob 21. . An objective optical system 31 and a plurality of illumination optical systems 32 are provided in the distal end component 29.

On the other hand, a connector 18a is provided at the end of the universal cord 18, and
As shown in FIG. 1, a cable 8 is extended from the side to connect to the video processor 3, and an image pickup device 9 provided inside a distal end portion 29 of the insertion portion 17.
6 (see FIG. 11) to be transmitted and input.

The operating section 16 is provided with a grip 19 for gripping the rigid endoscope 7 on the distal end side of the operating section main body 20. The operating section main body 20 has the bending operation knob 21 and the
A water supply control switch 22, a suction control switch 23, an image changeover switch 24 for switching between still images and the like are provided. The bending operation knob 21 is configured to be detachably attached to the operation section main body 20.

As shown in FIG. 1, the endoscope cover 10 attached to the rigid endoscope 7 includes an insertion portion cover portion 11, an operation portion cover 12, and an universal cord, which are sequentially inserted from the distal end side. The main part is constituted by the cover 13. The details of the insertion portion cover portion 11 of the cover 10 will be described with reference to FIG. In addition, the hard microscope 7 for a cover is configured to be mounted in a state in which the insertion portion cover portion 11 is held by a cover holder 15 (see FIG. 1). In addition, an endoscope with an endoscope cover method (hereinafter, referred to as an endoscope)
The cover type endoscope is a cover endoscope in which a cover 10 is covered with a cover rigid endoscope 7.

As shown in FIG.
Are, in order from the distal end side, the distal end portion 35 and the insertion portion cover
6, the main part is constituted by an endoscope operating portion fixing mouth body portion 37, and the insertion portion cover outer cover 36 is provided with respect to the distal end portion 35 and the endoscope operating portion fixing mouth body portion 37. Both ends are connected in a watertight and airtight manner. Inside these, an endoscope insertion channel 46 for inserting the endoscope 7 is provided, and an air / water supply line 38 made of a soft resin, and a suction line 38 also made of a soft resin. 39 etc. are inserted.

The distal end portion 35 is provided with an observation window 41 made of a transparent resin at a position corresponding to the front of the optical axis of the objective optical system 31 and the illumination optical system 32 of the endoscope 7 for cover. An air supply / water supply nozzle (hereinafter, abbreviated as a nozzle) 42 that opens toward the window 41 for cleaning the observation window 41 and communicates with the air supply / water supply conduit 38.
And a forceps outlet 43 communicating with the suction conduit 39.

The endoscope operating portion fixing mouth portion 37 has a forceps insertion port 44 protruding from a side thereof, and an endoscope insertion channel 46 is provided at the proximal end of the mouth body portion 37. The air supply / water supply line 3
8 and the suction line 39 extend.

The insertion portion cover outer cover 36 includes a soft outer cover 36a for covering a portion corresponding to the curved portion 28 of the rigid mirror with cover 7 and a hard outer cover 36b for covering a portion corresponding to the hard portion 27. The soft outer skin 36a
Is formed of a soft polymer material to be thin (for example, about 0.1 to 3 mm), and the hard outer cover 36b is formed of a relatively hard resin such as Teflon or urethane. The soft outer skin 36a and the hard outer skin 36b are connected to each other in a watertight and airtight manner.

As shown in FIG. 4, the connecting portions of the insertion portion cover portion 11 and the operation portion cover 12 and the connection portion of the universal code cover 13 and the operation portion cover 12 have their ends overlapped with each other. There is no portion where the internal rigid endoscope 7 is exposed to the outside.

FIG. 3 shows a state in which the curved rigid endoscope 7 with the cover 10 mounted thereon is inserted into the rigid sheath 71 to observe the inside of the abdominal cavity. Such a rigid sheath 71 is also called a trocar,
A variety of known ones have been proposed.

When observing the inside of the abdominal cavity with the rigid endoscope 7 through such a rigid sheath 71, the inside of the abdominal cavity is inflated by supplying air to secure a visual field so as to be suitable for observation, and the inflated state is maintained. Need to keep. For this reason, an airtight packing 72 for maintaining airtightness is provided at the proximal end of the rigid sheath 71, and does not leak gas in the abdominal cavity to the outside when the rigid endoscope 7 is inserted. It has become. At this time, since the portion in contact with the airtight packing 72 is the hard outer skin 36b as described above, it can withstand the sliding frictional force with the airtight packing 72, and no damage occurs. Hard skin 3 at this time
The hardness of 6b only needs to be high enough to withstand the sliding friction force with the airtight packing 72, and does not have to be a completely hard material such as metal.

It should be noted that the present invention is not limited to a curved rigid scope for a cover, but can be applied to an endoscope such as a curved rigid scope without a cover or a flexible scope which is usually used without a cover. . Further, an intraperitoneal ultrasonic probe for performing ultrasonic diagnosis of an intraperitoneal organ may be covered with a cover. In the case of a flexible endoscope, the outer cover covering the bent portion and the portion of the flexible tube to be bent as required may be a soft outer cover, and the outer cover covering the other insertion portions may be a hard outer cover. Further, in the case of a rigid mirror without a curve or the like, it is a matter of course that the outer cover of the cover covering the insertion portion may be a hard outer cover.

According to the first embodiment, since the airtight packing 72 of the hard sheath 71 and the hard outer cover 36b of the insertion portion cover portion 11 are in close contact with each other, even if the curved rigid mirror 7 for the cover is operated. Airtightness can be maintained, and air in the abdominal cavity does not escape. Further, the airtight packing 72 of the cover outer cover 36 is provided.
Since the sliding portion is formed with the hard outer skin 36b, no wrinkles or the like are generated due to friction with the airtight packing 72, and no damage such as perforation is caused. As a result, the endoscope in the endoscope cover is not exposed to the outside, and even if various bacteria and the like adhere to the endoscope, the endoscope does not enter the body cavity of the patient and is not infected. Further, since the cover has a hard portion, it is easier to insert and remove the endoscope than to insert and remove the endoscope into the full-length soft cover. In addition, since the portion corresponding to the curved portion 28 of the rigid mirror with cover 7 is covered with the soft outer skin 36a, there is no hindrance to the bending operation.

FIG. 6 is a longitudinal sectional view showing an insertion portion cover portion of an endoscope cover mounted on a rigid endoscope with a curved end for an endoscope cover according to a second embodiment of the present invention. Since the second embodiment is almost the same as the first embodiment, only different portions will be described.

In the second embodiment, the endoscope operating portion fixing mouth portion 37 of the first embodiment described above and the hard outer cover 36b are integrally formed, and the endoscope operating portion fixing portion serving as a hard covering portion is formed. A hard skin 75 was used. Other parts are the same as in the first embodiment.

According to the second embodiment, the same effects as those of the first embodiment can be obtained, and the number of parts can be reduced.
Further, there is an effect that the cost can be reduced.

7 to 11 relate to a third embodiment of the present invention. FIG. 7 is a side view showing another example of a rigid endoscope having a curved distal end for an endoscope cover, and FIG. 8 is a distal end for an endoscope cover. 9 is a sectional view showing a state in which the endoscope cover is attached to the rigid microscope with a curve, FIG. 9 is a sectional view taken along the line AA in FIG. 8, FIG. 10 is a longitudinal sectional view showing an outline of a bending operation mechanism, and FIG. It is a longitudinal cross-sectional view which shows the vicinity of the front-end | tip part of the rigid mirror with a front-end curve for a mirror cover.

The curved rigid endoscope 8 for the cover of the third embodiment.
As shown in FIG. 7, 1 is configured by extending the insertion portion 17 from the operation portion 82 to the distal end side and extending the universal cord 18 from the hand side.

The operation section 82 is provided with a bending operation section 83, and a convex section 84 is provided on the peripheral surface of the bending operation section 83.
Is provided, and the bending operation of the bending section 28 is performed by turning the bending operation section 83 in the radial direction (this bending operation mechanism will be described later).

As shown in FIG. 8, the cover 10 mounted on the curved rigid mirror 81 for a cover includes a universal code cover 13 for covering the universal cord 18,
It comprises an operation section 82 and an operation section insertion section cover 86 that covers the insertion section 17.

The operation portion insertion portion cover 86 is composed of an insertion portion cover portion 87, an endoscope operation portion fixing mouth portion 88, and an angle ring 89 in order from the distal end side to the hand side.

The insertion portion cover 87 is provided with the hard cover 36.
b, a soft outer skin 36a, and a distal end portion 35. The distal end portion 35 is provided with a transparent observation window 41 at a position corresponding to the front of the optical axis of the optical system of the curved rigid mirror 81 for a cover. In addition, the soft outer cover 36a covers a portion corresponding to the curved portion 28, and the soft outer cover 36b covers a portion corresponding to the hard portion 27, respectively. The distal end portion 35, the soft outer skin 36a, the hard outer skin 36b, and the endoscope operating portion fixing mouth portion 88 are air-tightly connected.

The angle ring 89 is rotatably attached to the endoscope operating section fixing opening 88. Inside the angle ring 89, a concave portion 90 that fits into the convex portion 84 of the bending operation section 83 is provided.
By turning the angle ring 89 in the radial direction, the bending operation section 83 also rotates integrally, and the bending operation can be performed.

FIG. 9 is a sectional view of a portion for performing such a bending operation. As shown in the figure, inside the bending operation unit 83, an imaging cable 91 for transmitting a signal output from the imaging device 96 shown in FIG. 11 and a light guide 92 for transmitting illumination light from the light source device 2 are provided. , The most advanced bending piece 9
7, and an angle wire 93 that bends the bending portion 28 of the rigid mirror 81 with a curved distal end for cover by being pulled is inserted. This angle wire 9
The other end of 3 is fixed to a helicoid top 94 described later.

Next, the bending operation mechanism will be described with reference to FIG. On the inner peripheral surface of the bending operation section 83, two
Two helicoid parts 95a and 95b are provided, and the directions of these helicoids are opposite to each other. Two helicoid pieces 94 are screwed into these helicoid parts 95a and 95b, respectively, and one end of the angle wire 93 is fixed to each of the helicoid pieces 94 as described above. This helicoid top 94
As shown in FIG. 9, the rotation in the radial direction is restricted, and only the movement in the axial direction is performed.

When a bending operation is performed by the bending operation mechanism having the above-described configuration, the operator rotates the angle ring 89 so that the bending operation portion 83 also rotates integrally and the helicoid provided on the inner peripheral surface. The parts 95a and 95b rotate. Since the helicoid parts 95a and 95b are provided so that the grooves are in the opposite directions as described above, the helicoid pieces 9 screwed to the respective helicoid parts by the rotation operation.
One of 4 starts moving axially and the other starts moving axially downward. As the helicoid piece 94 moves, the angle wire 93 is pulled to perform a bending operation.

The universal cord cover 13 shown in FIG. 8 is a bag-like member having both ends opened, and the operation portion side end 13a is largely open for inserting the angle ring 89, and is elastic. A ring 48 is fixed to the end of the angle ring 89.

According to the third embodiment, substantially the same effects as those of the first and second embodiments can be obtained, and only one member of the operation portion insertion portion cover 86 can be used to provide the cover with a curved rigidity. Since the insertion section 17 and the operation section 82 of the mirror 81 can be covered and the bending operation section 83 can be mounted together, the workability of mounting the cover is good. Further, there is an advantage that the angle operation can be easily performed from above the cover.

In each of the above-described embodiments, when a treatment for smoothing the surface of the insertion portion covering portion is performed, the friction with other members may be further reduced. It goes without saying that a lubricant may be applied to the surface.

[0043]

As described above, according to the present invention, there is provided an endoscope device of an endoscope cover system in which the insertion portion covering portion is not damaged by frictional force even when it comes into contact with another member. can do.

[Brief description of the drawings]

FIG. 1 to FIG. 5 relate to a first embodiment of the present invention,
FIG. 1 is a perspective view illustrating an entire configuration of an endoscope apparatus of an endoscope cover type using a rigid endoscope with a curved distal end for an endoscope cover.

FIG. 2 is a longitudinal sectional view showing an insertion portion cover portion of the endoscope cover attached to a rigid endoscope with a curved distal end for an endoscope cover.

FIG. 3 is a cross-sectional view showing a state in which a rigid endoscope with a curved distal end for an endoscope cover with a cover attached is inserted into the abdominal cavity via a rigid sheath.

FIG. 4 is an enlarged side view of a rigid endoscope with a curved distal end for an endoscope cover showing a connection portion between an insertion portion cover portion and an operation portion cover and a connection portion between a universal code cover and an operation portion cover.

FIG. 5 is a side view showing a rigid endoscope with a curved distal end for an endoscope cover.

FIG. 6 is a longitudinal sectional view showing an insertion portion cover portion of the endoscope cover mounted on a rigid endoscope with a curved end for an endoscope cover according to a second embodiment of the present invention.

7 to 11 relate to a third embodiment of the present invention, and FIG. 7 is a side view showing another example of a rigid endoscope with a curved distal end for an endoscope cover.

FIG. 8 is a sectional view showing a state in which the endoscope cover is attached to a rigid endoscope with a curved distal end for an endoscope cover.

FIG. 9 is a sectional view taken along line AA of FIG. 8;

FIG. 10 is a longitudinal sectional view schematically showing a bending operation mechanism.

FIG. 11 is a longitudinal sectional view showing the vicinity of a distal end portion of a rigid endoscope with a curved distal end for an endoscope cover.

[Explanation of symbols]

 7, 81: rigid endoscope with curved distal end for endoscope cover 10: endoscope cover 11: insertion section cover section (insertion section covering section) 16, 82: operation section 17: insertion section 36b: hard outer skin (hard covering section) 75: Hard outer cover (hard coating) for fixing the endoscope operation unit 86: Operation unit insertion unit cover

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Yoshio Tashiro 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Industries Co., Ltd. (72) Inventor Akira Suzuki 2-43-2 Hatagaya, Shibuya-ku, Tokyo Within the Olympus Optical Co., Ltd. (72) Minoru Yamazaki, Inventor 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Osamu Mizuta 2-43-2, Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (56) References JP-A-3-37029 (JP, A) JP-A-4-8336 (JP, A) JP-A-63-234212 (JP, A) (58) Survey Field (Int.Cl. ⁷ , DB name) A61B 1/00-1/32

Claims (1)

(57) [Claims] 1. An endoscope extending an insertion section from an operation section; an endoscope cover including an insertion section covering section covering the insertion section of the endoscope; With the endoscope cover attached
Tubular rigidity with airtight packing inside
And a portion in contact with the airtight packing portion of the insertion portion covering portion.
The endoscope apparatus of the endoscope cover system, characterized in that a hard coating portion formed of a material having a rigid enough not damaged by friction with other members.