JPH078440A - Hard endoscope - Google Patents

Abstract

PURPOSE:To provide the hard endoscope capable of lessening the loss of time and an increase in a doctor's fatigue. CONSTITUTION:A light guide 10 for transmitting illuminating light is inserted into a hard insertion part 2 to emit the light forward from an illumination window 11. The image of the illuminated lesion, etc., is transmitted by an objective lens 13 mounted on an observation window and a relay optical system 14 to an eyepiece part 4 side and is macroobserved with an eyepiece lens 15. Further, a suction path 16 is inserted into the insertion part 2. A suction pipe 17 is freely projectably and retractably housed into this suction path 16 and is made projectable from the front end surface by operation of a slide switch 7 so that the suction of physiological saline and the suction of bled blood are enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid endoscope having suction means.

[0002]

2. Description of the Related Art In recent years, endoscopes have been widely used in medical fields and industrial fields. This endoscope includes a rigid endoscope having a rigid insertion portion and a flexible endoscope having a flexible insertion portion. Since a rigid endoscope does not need flexibility as an image guide like an image guide fiber, it is possible to use a relay optical system or the like, and an observation image generally having a higher resolution than that of a flexible endoscope. It will be possible to obtain. Further, since the insertion portion is rigid, it has excellent sniperability and is widely used for laparoscopic surgery such as observation of the abdominal region or medical treatment.

For example, when laparoscopic surgery is performed with a rigid endoscope, when the inside of the abdominal cavity is washed or bleeding, a suction tube is inserted through a trocar, and the raw water used for washing or the bleeding blood is sucked. Was there.

[0004]

However, in laparoscopic surgery, taking in and out forceps takes time, which causes a loss of time and causes increased fatigue of the doctor. Therefore, improvement was desired. .

The present invention has been made in view of the above points, and an object of the present invention is to provide a rigid endoscope capable of reducing the loss of time and the increase in the fatigue of the doctor.

[0006]

In a rigid endoscope having an observation window and an illumination window at the distal end of a rigid insertion portion, a suction passage provided in the insertion portion and a suction passage communicated with the suction passage. , By providing a suction tube projecting from the distal end surface of the insertion portion, without the need to insert a new suction tube suction of saline water or suction of bleeding blood when washed, It is possible to reduce the loss of time and the increase in fatigue of the doctor.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 relate to a first embodiment of the present invention.
Shows a perspective view of the rigid endoscope of the first embodiment, and FIG. 2 shows a sectional structure.

As shown in FIGS. 1 and 2, the rigid endoscope 1 according to the first embodiment of the present invention is used as, for example, a laparoscope, and includes a rigid insertion portion 2 and a rear portion of the insertion portion 2. It is composed of a grip portion 3 provided at an end and an eyepiece portion 4 provided at a rear end of the grip portion 3, and a light guide cap 5 is projectingly provided at a lower portion of the grip portion 3, and a suction is provided at an upper portion. The base 6 is projected,
Further, a slide switch 7 is provided at the rear end of the insertion section 2 near the grip section 3.

As shown in FIG. 2, a light guide cable 8 is connected to the light guide base 5, and the end of the light guide cable 8 can be detachably connected to a light source device (not shown). Is supplied.

This illuminating light is transmitted by the light guide 9 in the light guide cable 8, and the light guide base 5
Illumination light is supplied to the light guide 10 on the rigid endoscope 1 side in the portion. The light guide 10 is inserted through the insertion portion 2 and emits the illumination light transmitted from the emission end surface attached to the illumination window 11 formed on the distal end surface of the insertion portion 2 forward.

The illuminated object forms an image on its focal plane by an objective lens 13 attached to an observation window adjacent to the illumination window 11. This image is transmitted to the eyepiece 4 side by a relay optical system 14 formed so as to face the optical axis of the objective lens 13 and made of, for example, a gradient index lens, and is magnified through the eyepiece 15. It is observable.

Further, in this embodiment, the suction passage 1 is provided in the insertion portion 2.
6 is formed, and a suction pipe 17 is housed in the suction passage 16 so as to be movable back and forth. The suction passage 16 communicates with the suction mouthpiece 6 at the grip portion 3, and is further connected to a suction pump or the like of a suction device (not shown) via a suction tube 18 connected to the suction mouthpiece 6. Then, the suction operation can be controlled to be turned on / off by operating a foot switch (not shown) connected to the suction device.

The vicinity of the rear end of the suction tube 17 movably accommodated in the suction passage 16 is connected to a movable slide switch 7 in a guide groove 19 provided at the rear end of the insertion section 2 with a screw or the like, and slides. When the switch 7 is moved back and forth along the guide groove 19, the suction tube 17 can be moved back and forth along with this movement.

When the slide switch 7 is moved to the rearmost position, the tip of the suction pipe 17 is housed in the suction passage 16, and when moved from the rearmost position to the front, the suction pipe 17 is moved.
The tip of the is projected forward from the tip of the suction passage 16.

That is, the distal end of the suction tube 17 is moved to the insertion portion 2 by operating the slide switch 7 on the proximal side of the rigid endoscope 1.
It is possible to project from the tip end surface of the and to be housed in the suction passage 16. The rigid endoscope 1 can be discarded after being used for inspection.

According to the first embodiment, the rigid endoscope 1 is used to observe organs and the like in the abdominal cavity, and under the observation of the rigid endoscope 1, the diseased tissue of the affected area is excised. And so on.

When the inside of the abdominal cavity is washed or when bleeding is performed, the slide switch 7 is operated to cause the tip of the suction portion 7 to protrude so as to suck the saline water used for washing, or suck the bleeding blood. Then, it can be removed to the suction tube 18 side. In this case, since the tip of the suction tube 17 can be made to project forward from the tip of the insertion portion 2, the observation window can be sucked without being soiled (in this case, the objective lens 13 is not soiled).

Therefore, the work of newly inserting the suction tube through the trocar is unnecessary, and the loss of the operation time of the doctor is reduced or eliminated, and the fatigue is increased due to such troublesome treatment. It can be solved or reduced.

FIG. 3 shows a rigid endoscope 21 according to the second embodiment. In the grip portion 3 of the rigid endoscope 21 of this embodiment, ON /
An OFF switch 23 is provided, and when the switch 23 is turned ON, the suction tube 24 electrically projects from the tip of the insertion section 2. When it is turned off, it retracts. ON /
As a power source of the OFF switch 23, a method of attaching a battery to the rigid endoscope 21 and a method of extending a power cord from the rigid endoscope 21 and taking power from the outside can be considered.

As in the first embodiment, the suction tube 24 projects forward from the tip of the insertion portion, so that the objective lens 13
It is designed so that it can be suctioned without getting dirty. In this embodiment, the suction base 6 is formed adjacent to the light guide base 5. The other structure is the same as that of the first embodiment. Moreover, the operation and effect of this embodiment are almost the same as those of the first embodiment. The rigid endoscope 21 of this embodiment may be discarded after use.

FIG. 4 shows a rigid endoscope 3 according to a third embodiment of the present invention.
1 is shown. In this embodiment, the suction tube 32 is provided so as to project from the tip surface of the insertion portion 2. The suction pipe 32 is provided inside the light guide 33 having a crescent-shaped cross section, for example, and is fixedly provided in a protruding state.

Therefore, although the suction tube 32 cannot be put in and taken out, the structure can be made simple and the cost can be reduced. The other structure is the same as that of the second embodiment. Further, it has similar operations and effects to those of the first embodiment. The rigid endoscope 31 of this embodiment may be discarded after use.

The rigid endoscope 41 shown in FIG. 5 is designed to ensure a visual field even when bleeding occurs. The rigid endoscope 41 includes a rigid insertion portion 42, a grip portion 43 provided at the rear end of the insertion portion 42, and an eyepiece portion 44 provided at the rear end of the grip portion 43, A light guide ferrule 45 and a fluid ferrule 46 are provided on the grip portion 43 so as to project upward.

A light guide cable 48 is connected to the light guide base 45.
The end of can be detachably connected to a light source device (not shown), and illumination light is supplied from the light source device.

This illumination light is transmitted by the light guide in the light guide cable 48, and the light guide base 4
Illumination light is supplied to the light guide 49 on the rigid endoscope 41 side in the fifth portion. The light guide 49 has an insertion portion 42.
The illumination light transmitted through the emission end face inserted through the inside and attached to the illumination window formed on the distal end face of the insertion portion 42 is emitted forward.

The illuminated object is placed, for example, inside the illumination window and an image is formed on its focal plane by the objective lens 53 inside the cover glass, which is attached to the front end surface of the lens tube 51 and closes the observation window. This image is an objective lens 53
Relay optical system 5 arranged inside the lens tube 51 facing the
It is transmitted to the eyepiece section 44 side by 4 and can be magnified and observed through an eyepiece lens (not shown).

Further, in this embodiment, a ring-shaped fluid passage 56 is formed outside the lens tube 51 in the insertion portion 42, and the rear end of the fluid passage 56 is inside the grip portion 43. It is connected to a fluid control device (not shown) for communicating air or water through a fluid tube 58 connected to the fluid base 46.

By operating a foot switch (not shown) connected to the flow control device, it is possible to control ON / OFF of the air feeding or water feeding operation. Next, the operation will be described. When surgery is performed using the rigid endoscope 41, bleeding may occur. In that case, bleeding blood may adhere to the observation window and obstruct the visual field. In addition, a field of view cannot be obtained in blood, making it difficult to confirm the bleeding point.

In such a case, by operating a foot switch (not shown), gas or liquid is flushed out through the fluid passage 56 to push blood or the like in the vicinity of the observation window forward to secure a visual field. Alternatively, the bleeding point can be confirmed.

The gas or liquid ejected in a flash manner can be sucked and removed by performing a suction operation on the fluid control device connected to the fluid tube 58. The tip of the fluid passage 56 may be formed so as to project from the tip surface of the insertion portion 42. Further, a cylindrical tube may be provided so as to project and retract from the tip of the fluid passage 56. Further, the rigid endoscope 41 may be discarded after use.

In addition to the function of the rigid endoscope 41 of FIG. 5, the rigid endoscope 61 of FIG. 6 has a channel 62 through which a treatment tool can be inserted.
Is provided. For example, a high frequency electrode 63 is inserted into the channel 62, and the rear end side of the high frequency electrode 63 projects from a channel port 64 projecting to the rear of the grip 43 and is connected to a high frequency power source (not shown).

A light guide cable 48 and a fluid tube 58 are connected to the light guide mouthpiece and the fluid mouthpiece of the grip portion 43, respectively. Also, an L-shaped optical tube gripping portion 65 projects from this gripping portion 43, and the eyepiece 6 is attached to the rear end thereof.
6 is formed. Others include the rigid endoscope 4 shown in FIG.
It is almost the same as 1.

The electrode tip of the high-frequency electrode 63 is projected from the tip of the channel 62 of the rigid endoscope 61 to flush the water supply or the air supply to obtain a visual field, and the bleeding point is confirmed to check the electrode tip. Hemostasis can be taken.
The hemostatic means is not limited to an electrode, but may be a laser, a microwave probe, a hemostatic forceps, or anything. This rigid endoscope 61
May be discarded after use.

A rigid endoscope 71 shown in FIG. 7 is different from the rigid endoscope 1 shown in FIG. 1 in that a retractable retractor 72 is provided instead of the retractable suction tube 17. Therefore, this rigid endoscope 7
1, the suction mouthpiece 6 is not provided. The tip of the expulsion element 72 is made of a spring-like member in the shape of a rake, and has a characteristic of spreading.

By operating the slide switch 7 provided in the vicinity of the grip portion 3 of the rigid endoscope 71, the expulsion element 72 is moved in and out from the distal end portion of the insertion portion 2. Other configurations are shown in FIG.
Is the same as that shown in.

According to the rigid endoscope 71, the slide switch 7 is operated when the observation visual field is directed to the target organ or the like and other organs may obstruct the visual field in front of the organ. Thus, the retraction element 72 can be projected, and the obstruction element 72 can be used to remove the disturbing organ and bring the target organ into view.

The structure having the suction mouthpiece 6 as in the first embodiment may be adopted so that the suction pipe 17 and the expulsion element 72 can be selectively used. Also, other treatment tools may be selectively used. The rigid endoscope 71 may be discarded after use.

FIG. 8 shows a rigid endoscope 7 for easily wiping blood.
5 shows the tip side. Bleeding may be significant during laparoscopic surgery. In the conventional example, gauze is fed into the abdominal cavity through the trocar, the bleeding site is wiped with it, and the gauze is collected.

In this case, it is necessary to feed gauze, wipe bleeding, and collect gauze.
Since it is very complicated, at least two channels are provided in the rigid endoscope 75 shown in FIG. 8, a strip-shaped gauze 77 is fed out from the feeding port 76a at the tip of the channel, and the gauze 77 is fed from the other collecting port 76b. It has a structure to pull in and collect.

An exit end face 78 of the light guide and an objective lens 79 are provided adjacent to the feeding port 76a and the collecting port 76b. The rigid endoscope 75 may be discarded after use.

FIG. 9A shows a rigid endoscope 81 equipped with a means for collecting living tissue. The rigid endoscope 81 is packed in a sterilization pack (not shown), supplied to the user in a sterilized state, used for one example, and then discarded. Therefore, it is not washed and reused after use.

This rigid endoscope 81 has a rigid insertion portion 82.
And a grip portion 83 provided at the rear end of the insertion portion 82.
And an eyepiece portion 84 provided at the rear end of the grip portion 83. The light guide cap 8 is provided above the grip portion 83.
5 is projected, and a suction mouthpiece 86 is projected below. The light guide base 85 is connected to the light source device via a light guide cable (not shown) so that illumination light is supplied from the light source device.

This illuminating light supplies the illuminating light to the light guide 87 on the rigid endoscope 81 side at the light guide base 85 portion. The light guide 87 is inserted through the insertion portion 82, and the illumination window 8 formed at the distal end portion 82 a of the insertion portion 82.
The illumination light transmitted from the emission end face attached to 8 is emitted forward.

The illuminated object forms an image on its focal plane by the objective optical system attached to the observation window 89 adjacent to the illumination window 88. The objective optical system and the relay optical system arranged to face the objective optical system are formed of, for example, a gradient index lens 90. That is, it has both an image forming function and an image transmitting function. Then, it is transmitted to the eyepiece 84 side by the gradient index lens 90, and can be magnified and observed through the eyepiece window 91.

A suction channel 92 is formed in the insertion portion 82 of the rigid endoscope 81, and the rear end of the suction channel 92 is connected to the suction mouthpiece 86 by a grip portion 83.
The suction base 86 can be connected to a suction device via a syringe 93 or a suction tube (not shown). The tip of the suction channel 92 opens into a concave portion 94 for collecting living tissue, and a plurality of biopsy needles 95 for collecting living tissue are projected from the concave portion 94 at the periphery of the opening.

In this rigid endoscope 81, an insertion portion 82, a grip portion 83, and an eyepiece portion 84 are integrally formed by a molding member. Next, the operation will be described.

When the biopsy needle 95 at the distal end portion 82a is punctured into a patient tissue (not shown) and suction pressure is applied to the channel 92 with a syringe 93 or a suction device (not shown), the biopsy needle 9
The affected tissue can be taken into

At this time, since the biopsy needle 95 inadvertently damages the tissue in the body cavity during the operation is prevented by the wall portion around the recess 94 functioning as a protective cover, safety can be secured. The rigid endoscope 81 may be discarded after use.

Instead of the biopsy needle 95, a sharpened cylindrical pipe 96 may be provided by cutting the tip obliquely as shown in FIG. 9B. In this case, if a suction pump is connected to the suction mouthpiece 86, it can be used as a suction tube for sucking body fluid or the like, if it is connected to a water pump, it can be used as a water supply tube, or by directly inserting forceps. Channel 92 and suction base 8
The number of 6 is not limited to one, and a plurality of caps may be provided in one channel or a plurality of channels may be provided.

FIG. 10A shows the distal end side of another rigid endoscope provided with a means for collecting living tissue. A tissue accommodating portion 97 is opened at the distal end portion 82 a of the insertion portion 82. A sharp claw 98 is provided at the mouth of the tissue storage section 97. A method of collecting living tissue with this rigid endoscope will be described below.

The tip 82a of the insertion portion 82 is attached to the affected tissue
To the storage compartment 9 as shown in FIG. 10 (b).
Take in 7. After that, when the rigid endoscope is separated from the affected area, the tissue 99 taken into the storage section 97 is torn off by the claw 98 and collected as shown in FIG. 10 (c).

FIG. 11 shows a modification of FIG. 10 (a). In this modification, the cytodiagnosis brush 100 is attached to the distal end portion 82a of the insertion portion 82. In addition, the cover 101 allows the brush 1
00 can prevent the cells of normal tissue from being inadvertently collected.

According to the rigid endoscope of FIGS. 9 to 11,
Since it is possible to perform examination and treatment under the direct view of an endoscope that can be used as a laparoscope, a biopsy can be performed more safely than in the case of a conventional blind. In addition, it is not necessary to additionally puncture a treatment trocar for biopsy, and the invasion of the patient can be reduced.

Next, a rigid endoscope provided with a scope holder will be described. Since a rigid endoscope also requires illumination, a light guide cable extends from the light source device and is connected to the rigid endoscope. Also, when performing laparoscopic surgery, etc., the rigid endoscope was fixed with a scope holder due to lack of manpower.

In the conventional example, the light guide cable, the camera cord, and the scope holder are extended from the rigid endoscope, and it is expected that the cords will be caught and cause an accident. Therefore, in the rigid endoscope 111 shown in FIG. 12A, the operability of the rigid endoscope is improved as follows.

Hard endoscope body 112, scope holder 1
13, the light guide cable 114 is integrally molded, and the light guide is inserted into the scope holder 113. Therefore, the illumination light can be transmitted from the end face of the light guide cable 114 to the rigid endoscope main body 112 side without connecting a light transmission medium such as a separate optical fiber, and the transmitted illumination light can be emitted from the tip of the insertion portion. I have to.
An attachment arm 115 extends at the end of the scope holder 113. With this structure, a bright illumination system can be obtained because there is no loss in light transmission efficiency due to connection.

FIG. 12B shows a modification of FIG. 12A. One end is fixed to the rigid endoscope main body 112, and a light guide base 117 is provided at the end of the flexible scope holder 116 in which the light guide fiber is inserted, and the light guide cable 118 is maintained there. can do.

An arm 115 for attachment is extended from the end of the scope holder 116. In this case, the light guide cable of the conventional example can be used, and since the light guide cable does not extend further from the rigid endoscope main body 112, operability is improved.

[0059]

As described above, according to the present invention, since the suction tube projecting from the distal end surface of the insertion portion is provided, it is not necessary to insert a new suction tube, and suction of blood, etc. This makes it possible to prevent the observation window from becoming dirty during suction.

[Brief description of drawings]

FIG. 1 is a perspective view of a rigid endoscope according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view of the rigid endoscope according to the first embodiment.

FIG. 3 is a perspective view of a rigid endoscope according to a second embodiment of the present invention.

FIG. 4 is a perspective view of a rigid endoscope according to a third embodiment of the present invention.

FIG. 5 is a side view of a rigid endoscope provided with a mechanism for flushing gas or liquid in a flash manner.

FIG. 6 is a side view of a rigid endoscope provided with a treatment tool channel.

FIG. 7 is a perspective view of a rigid endoscope provided with an exclusion member.

FIG. 8 is a perspective view showing a distal end side of a rigid endoscope provided with a gauze that wipes a bleeding site.

FIG. 9 is a cross-sectional view showing a rigid endoscope including a biological tissue collecting means.

FIG. 10 is a cross-sectional view showing the distal end side of another rigid endoscope including a biological tissue collecting means.

11 is a cross-sectional view showing the distal end side of the rigid endoscope of the modified example of FIG.

FIG. 12 is a perspective view showing a rigid endoscope integrated with a scope holder.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Rigid endoscope 2 ... Insertion part 3 ... Grip part 4 ... Eyepiece part 5 ... Light guide mouthpiece 6 ... Suction mouthpiece 7 ... Slide switch 10 ... Light guide 11 ... Illumination window 13 ... Objective lens 14 ... Relay optical system 16 ... Suction path 17 ... Suction tube 18 ... Suction tube 19 ... Guide groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Akio Nakata 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Inventor Shiro Bito 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. Olympus Optical Co., Ltd. (72) Inventor Toshikazu Takayama 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus Optical Co., Ltd. (72) Inventor Susumu Takahashi 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Yukio Kawase 2-43-2 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Hiroaki Kagawa 2-43 Hatagaya, Shibuya-ku, Tokyo No. 2 Olympus Optical Co., Ltd. (72) Inventor Tsuruo Hatori 2-43-2 Hatagaya, Shibuya-ku, Tokyo Olympus The Optical Industry Co., Ltd.

Claims (1)

[Claims] 1. A rigid endoscope having an observation window and an illumination window at a distal end portion of a rigid insertion portion, wherein a suction passage provided in the insertion portion communicates with the suction passage, and a distal end of the insertion portion. A rigid endoscope having a suction tube protruding from the surface.