JPH05103756A - Endoscope - Google Patents

Abstract

PURPOSE:To provide an endoscope capable of certain sterilization. CONSTITUTION:An endoscope body 4 having an inserting part 5 having a modified cross section and a sheath member 6 as a channel forming member attachably and removably mounted on the outer circumference of the inserting part 5 and forming a channel in the space axially extending at least with the outer circumferential surface of the inserting part 5 are provided, and no channel is provided on the endoscope body 4 side, so that the endoscope body 4 can easily and certainly be sterilized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope in which a channel is formed between a sheath member and an insertion portion of the endoscope.

[0002]

2. Description of the Related Art An endoscope is widely used in the medical field for observing a deep part in a body cavity by inserting it into a body cavity or the like, and performing a medical treatment by using a treatment tool if necessary. It came to be used. or,
In the industrial field, endoscopes are widely used for inspecting the inside of jet engines or the inside of plants. Conventional endoscopes, especially medical endoscopes, have channels for air supply, water supply, and suction, and these channels are used for cleaning the objective lens at the distal end and suctioning dirt.

[0003]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention For example, when an endoscope is used in a surgical operation, it is necessary to surely sterilize the duct, but since the channel is thin and long, complete sterilization is required in the conventional example. Was hard to do. Particularly, in the conventional example having a bent nozzle so that the objective lens can be washed, dirt and the like are likely to be accumulated in the bent portion of the nozzle,
It was difficult to perform complete sterilization.

The present invention has been made in view of the above points, and an object of the present invention is to provide an endoscope which can surely sterilize the endoscope.

[0005]

[Means and Actions for Solving Problems] An endoscope main body having an insertion portion with a modified cross section and a detachable attachment to the outer periphery of the insertion portion, and extending in the axial direction between at least the outer peripheral surface of the insertion portion. By providing a channel forming member that forms a channel in a space and having a structure that does not have a channel on the endoscope body side, the endoscope body can be sterilized easily and reliably.

[0006]

Embodiments of the present invention will be specifically described below with reference to the drawings. 1 and 2 relate to a first embodiment of the present invention, and FIG. 1 shows an endoscope apparatus including the first embodiment.
Shows a sectional view taken along the line AA 'in FIG. As shown in FIG. 1, an endoscope apparatus 1 is connected to the endoscope 2 of the first embodiment including an observation system and an illumination system, and is connected to the endoscope 2 to supply illumination light and send air. A light source device 3 having functions of water supply and suction. The endoscope 2 of the first embodiment is composed of an endoscope body 4 and a sheath member 6 into which the insertion portion 5 of the endoscope body 4 is inserted.

The endoscope body 4 includes an elongated insertion portion 5, an operation portion 7 connected to the rear end of the insertion portion 5, and an eyepiece portion 8 formed at the rear end of the operation portion 7. , A light guide cable 9 extending from the side of the operation unit 7 to the outside.

As shown in FIG. 2, the insertion portion 5 has a non-circular cross-sectional shape, and the inside of the insertion portion 5 and the light guide cable 9 are light guides 1 for transmitting illumination light.
1 is inserted. By connecting the connector 12 at the end of the light guide cable 9 to the light source device 3, illumination light is supplied from the light source device 3, and the light guide 11 transmits this illumination light and emits it from the tip surface.

A subject such as a diseased part illuminated by the illumination light forms an optical image on its focal plane by an objective lens 13 not shown attached to the tip of the insertion part 5. The front end surface of the image guide 14 for transmitting an optical image is arranged on this focal plane. The image of the front end surface is transmitted to the rear end surface by the image guide 14, and can be magnified and observed through an eyepiece lens (not shown) disposed opposite to the rear end surface.

The sheath member 6 into which the insertion portion 5 is detachably inserted is, as shown in FIG. 2, an insertion passage 15 having a circular cross section through which the irregular insertion portion 5 can be inserted, and a sheath around the insertion passage 15. Hollow passage 1 for many air / water / suction on the wall
, 16, and 16 are provided. By inserting the insertion portion 5 having the irregular cross section into the insertion passage 15, a relatively large gap can be formed in a portion adjacent to the insertion passage 15 as shown in FIG. 2, and this gap can be used as the treatment tool channel 17. I am trying. That is, the treatment instrument 18 can be inserted into the treatment instrument channel 17 formed by the gap as shown in these drawings.

.., 16 is connected to a tube 19, and the end of the tube 19 can be connected to the air / water / suction mouthpiece of the light source device 3. .. By operating a switch (not shown) of the light source device 3, it is possible to select an operation of air supply, water supply, or suction.

An operating portion 20 is formed on the proximal side of the treatment instrument 18, and by operating the operating portion 20, the pair of cups formed at the distal end of the treatment instrument 18 is opened and closed. Biopsy procedures can be performed.

In this embodiment, the endoscope 2 is replaced with the endoscope body 4
And a sheath member 6 having an insertion passage 15 through which the insertion portion 5 of the endoscope body 4 can be inserted, and the insertion portion 5
The structure does not have hollow pipes such as channels inside.

On the other hand, the sheath member 6 into which the insertion portion 5 is inserted has a multi-lumen structure. In other words,
A large number of hollow passages 16, 16 for performing water supply / suction, etc.
, 16 and an insertion passage 15 capable of forming the treatment tool channel 17 by inserting the insertion portion 5 is featured.

Therefore, after using this endoscope 2, if the endoscope body 4 is removed from the sheath member 6 and sterilized,
Since the endoscope body 4 has a structure having no hollow passage, it can be sterilized reliably. In other words, the repeatedly used endoscope component device portion can be surely sterilized. On the other hand, hollow path 1
The sheath member 6 having 6, 16, ..., 16 may be discarded after use. Alternatively, sterilization having a higher sterilization function than ordinary sterilization for an endoscope may be performed.

FIG. 3 is a sectional view of the distal end side of the endoscope of the second embodiment of the present invention, and FIG. 4 is a front view thereof. This embodiment has a structure in which nozzles 31 as shown in FIG. 3 are attached to the tips of the hollow passages 16 formed in the sheath member 6 in the first embodiment shown in FIG. Each nozzle 31 is attached to the stepped portion at the tip of the hollow passage 16 and has an attachment structure so as not to fall off. Further, the opening of each nozzle 31 is attached so as to face substantially the center of the insertion passage 15 so that the tip of the endoscope body 4 such as the outer surface of the objective lens 13 can be washed by water or air supply.

The other structure is the same as that of the first embodiment.
The same members are designated by the same reference numerals and the description thereof will be omitted. According to this embodiment, the objective lens 13 is washed like an ordinary endoscope having a bent nozzle. In this case, a large number of nozzles 31, ..., 31 have a high cleaning function. In addition, the endoscope body can be reliably sterilized after use. On the other hand, the sheath member 6 may be discarded after use.

Although the above embodiments have been described as having a multi-lumen structure, the present invention is not limited to this. For example, the hollow passage 16 is not provided and the insertion passage 15 is not provided.
It is also possible to have only one and supply air or water from the treatment tool channel 17 in the insertion passage 15.

FIG. 5 shows an endoscope according to the third embodiment of the present invention. The endoscope includes an endoscope body 41 and an endoscope body 4
It is composed of a sheath 43 into which one insertion portion 42 is inserted. The endoscope body 41 includes an insertion portion 42 and an operation portion 43.
And an eyepiece section 44 and a light guide cable 45.

On the other hand, the sheath 43 has a multi-lumen structure as in the first embodiment, and has a structure including an insertion passage 46 through which the insertion portion 42 can be inserted and a channel 47. In this embodiment, furthermore, a balloon 48 is provided inside the multi-lumen on the proximal side as shown in FIG. 6, and one lumen 49 is electrically connected to this balloon 48, and a tube 50 is attached to the proximal end of the lumen 49. Through manual pump 5
1 and so on.

Then, by sending air by the pump 51, the balloon 48 can be inflated as shown in FIG. 6, and by this inflation, the positioning of the insertion portion 42 in the axial direction, that is, the axis of the endoscope body 41 is performed. The positioning in the direction can be performed. By this positioning, the position relative to the channel 47 can be fixed, and operability such as treatment with a treatment tool or cleaning can be improved.

FIG. 7 shows the structure of the distal end side of the endoscope 41 of the third embodiment. A projecting portion 53 projecting inside the insertion passage 46 is formed at the distal end of the sheath 43, and the peripheral edge of the distal end surface of the insertion portion 42 inserted into the insertion passage 46 is formed at the projection 53.
It is possible to position in a state suitable for observation by abutting against and holding in this state (for example, holding by the balloon 48). In FIG. 7, the protrusion 53 is integrally formed with the member forming the sheath 43, but other members such as a hard member may be integrally fixed and formed.

In the third embodiment, the channel 47 may be formed by the insertion passage 46. Although it has been described that the proximal side of the endoscope body 41 is fixed by the balloon 48, it may be fixed at the distal end side.

FIG. 8 shows the tip side of a modification of the third embodiment. In this modification, an endoscope is composed of a catheter 55 with a light guide and an optical catheter 57 that is used by being inserted into an insertion passage 56 of the catheter 55. That is, the catheter 55 with a light guide is provided with the light guide 58, and the illumination light can be emitted through the illumination lens 59 attached to the distal end surface.

The tip of the catheter 55 with a light guide is formed of a hard tip member 60, and the tip surface of the catheter 55 is provided with a projection 61 projecting inside the insertion passage 56. An optical catheter 57 having an observation system can be inserted into the insertion passage 56. In other words, this optical catheter 5
An objective lens 63 protected by a cover glass 62 is attached to the tip of the hollow portion of 7, and the tip surface of an image guide 64 is fixed to the focal plane of the objective lens 63. Also in this modification, positioning can be performed by abutting the tip surface of the optical catheter 57 against the protrusion 61.

FIG. 9 shows a cleaning catheter 72 for cleaning the observation window 71 of the endoscope 70. An objective lens 74 protected by a cover glass 73 is attached to an observation window 71 of the endoscope 70, and a front end surface of an image guide 75 is fixed to a focal plane of the objective lens 74. Also, this observation window 7
A channel 76 is formed adjacent to the channel 1, and the irrigation catheter 72 can be inserted into the channel 76.

The cleaning catheter 72 is formed of a hollow tube 77, the tip surface of the tube 77 is closed, and an opening 78 is formed at one location on the side peripheral surface near the tip surface. In addition, the cleaning catheter 72 is shown in FIG.
As shown in 0, for example, three positioning wires 79, 7
9, 79 are provided, and the tip of each positioning wire 79 is fixed to the outer circumference of the tip of a tube 77 forming the cleaning catheter 72.

As shown in FIG. 11 (a), each positioning wire 79 is formed with a positioning portion 80 that projects outward in the radial direction at the tip end side and is given a bending tendency to retreat in the shape of a step.
As shown in FIG.
It projects so that it can be positioned at the stepped portion. In this state, by pulling the rear end side of each positioning wire 79, the protrusion amount of the positioning portion 80 can be set small, that is, can be set to a state close to a straight line as shown in FIG. 11B, and can be removed via the channel 76. ..

The tube 77 of the cleaning catheter 72
The external shape is shown in Fig. 12 (a), and the cross-sectional shape is shown in Fig. 12 (b).
By forming the opening 78 by cutting as described above, the opening 78 can be easily formed, and the cost can be reduced. Next, an improved endoscope channel cleaning function will be described. FIG. 13 is an exploded view of an endoscope 81 having an improved cleaning function for channels.

The endoscope 81 includes an insertion portion 82 and an operation portion 8
3, an eyepiece portion 84, and a light guide cable (not shown) extended from the operation portion 83. An angle knob 85 is provided on the side surface of the operation portion 83, and the angle knob 85 is operated. As a result, the bending portion 87 formed adjacent to the tip portion can be bent. Inside the insertion portion 82, as shown in the sectional view of FIG.
8 is inserted, and the light transmitted by the light guide 88 is emitted forward from the tip end surface of the light guide at the tip.

An objective lens is attached to the observation window at the tip, and the tip surface of the image guide 90 is arranged at the image forming position of the objective lens.
The image is transmitted to the end face on the eyepiece 84 side. This endoscope 81
The channel 91 has a structure in which the channel 91 can be disassembled in the axial direction. For example, the endoscope 81 has a notch along substantially the central axis of the channel 91, and the notch allows the endoscope 81 and the channel lid member 92 to be separated from each other.

Further, in order to make the channel cover member 92 detachable, for example, a convex groove portion 93 is formed on the side of the endoscope 81 as shown in FIG. 14, while the convex portion is formed on the side of the channel cover member 92. A concave groove portion 94 that fits into the groove portion 93 is formed. Then, for example, the channel lid member 92 is mounted from the direction of the reference numeral C shown in FIG. 13 while the concave groove portion 94 is fitted into the convex groove portion 93 on the endoscope 81 side to form a channel having the cross-sectional shape shown in FIG. Can be formed.

In FIG. 14, 95 indicates an angle wire. Since the channel 91 has a structure that can be disassembled in the axial direction as described above, disassembly as shown in FIG. 13 after use can ensure sterilization or disinfection.

FIG. 15 shows a modification of the endoscope 81 shown in FIG. In this endoscope 96, the channel insertion port 98 portion is provided as it is on the channel lid member 97, and the bottom of the channel insertion port 98 can be separated from the operation portion 83 of the endoscope 96. FIG. 16 shows this channel insertion port 98 side. In this endoscope 96, the channel cover member 97 can be attached or detached from the endoscope front end side. Then, in FIG. 15, when the channel cover member 97 is mounted from the tip side of the endoscope, it can be set in a state in which it can be used as a normal endoscope as shown in FIG. In addition, the fact that the channel cover member 97 and the endoscope 96 are provided with a fitting mechanism, etc., is shown in FIG.
Is the same as.

In this endoscope 96, the channel lid member 97 may be discarded after use. Also in this modification, by removing the channel cover member 97, the entire channel 91 on the endoscope 96 side can be exposed to the outside, so that sterilization and the like can be reliably performed.

[0036]

As described above, according to the present invention, the endoscope main body having the insertion portion having a modified cross section and the at least the outer peripheral surface of the insertion portion detachably attached to the outer periphery of the insertion portion. A channel forming member that forms a channel in a space extending in the axial direction is provided between them, and the endoscope body side has no channel, so that the endoscope body can be sterilized easily and reliably. be able to.

[Brief description of drawings]

FIG. 1 is a side view showing an endoscope apparatus including a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view taken along the line AA ′ of FIG.

FIG. 3 is a sectional view showing a distal end side of an endoscope of a second embodiment of the present invention with a part thereof cut away.

FIG. 4 is a front view of FIG.

FIG. 5 is a side view showing an endoscope according to a third embodiment of the present invention.

FIG. 6 is an enlarged cross-sectional view showing the proximal side of FIG.

FIG. 7 is a sectional view showing the distal end side of the endoscope of the third embodiment.

FIG. 8 is a sectional view showing the distal end side of an endoscope of a modified example of the third embodiment.

FIG. 9 is a cross-sectional view showing the distal end side of a cleaning catheter for cleaning the observation window of the endoscope.

FIG. 10 is a front view showing the washing catheter as seen from the tip side of FIG.

FIG. 11 is a side view showing the distal end side of the cleaning catheter.

FIG. 12 is a view showing an opening formed on the distal end side of the cleaning catheter.

FIG. 13 is a side view showing an exploded view of an endoscope in which channels can be divided.

14 is an enlarged cross-sectional view taken along the line BB ′ of FIG.

FIG. 15 is an exploded perspective view showing a modified example of the endoscope of FIG.

16 is a perspective view showing the channel cover member of FIG.

FIG. 17 is a perspective view showing the endoscope of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Endoscope device 2 ... Endoscope 3 ... Light source device 4 ... Endoscope main body 5 ... Insertion part 6 ... Sheath member 7 ... Operation part 9 ... Light guide cable 11 ... Light guide 13 ... Objective lens 14 ... Image guide 15 ... Insertion passage 16 ... Hollow passage 17 ... Treatment channel 18 ... Treatment tool 31 ... Nozzle

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Nobuhiko Washizuka 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Yasuhiko Omagari 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Ichiro Nakamura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Yoshinao Daimei 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd.

Claims (1)

[Claims] 1. An insert portion having a modified cross section, and a channel forming member detachably attached to the outer periphery of the insert portion and forming a channel in a space extending at least between the outer peripheral surface of the insert portion and the axial direction. An endoscope characterized by being provided.