JPS62102731A - Guide tube for endoscope - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope guide tube used to guide an insertion section of an endoscope inserted into a body cavity.

[Prior Art] Conventionally, this type of guide tube is known as one disclosed in Japanese Utility Model Application Publication No. 57-42801.

These guide tubes are flexible enough to allow the insertion part of the endoscope to pass through them, in order to secure an insertion path for the endoscope when observing and treating diseased areas in body cavities with an endoscope. It consists of 6 cylindrical bodies.

In addition, in conventional endoscopy, when treating raised lesions such as polyps and varicose veins in a body cavity using a treatment instrument such as forceps, the forceps insertion channel of the endoscope is usually Currently, treatment is performed by inserting a treatment instrument into the body, bending the treatment instrument itself, or using a forceps erecting device.

[Problems to be Solved by the Invention] However, in the conventional treatment means using two treatment instruments, since the treatment instrument is inserted through the forceps insertion channel of the endoscope, the distal end insertion portion of the treatment instrument protrudes into the body cavity,
For this reason, it is easy to move due to oscillations within the body cavity, and it is not only difficult to catch the raised lesion to be treated.
Since the raised lesion also moves, there is a problem in that careful manipulation is required and a high level of skill is required for treatment.

The present invention has been made in view of the above-mentioned problems.The purpose of the present invention is to prevent the treatment tool from moving when treating raised lesions such as polyps and varicose veins, and to easily remove the lesions. To provide a guide tube for an endoscope that can be guided so as to be easily and reliably caught.

[Means for Solving the Problems] 1- In order to solve the above problems, the present invention provides an endoscope 2 within a flexible cylindrical body 21 inserted into a body cavity.
In the endoscope guide tube into which the insertion section 201 of No. 00 is inserted and guided, a treatment instrument insertion passage 5 is formed along the inner wall of the cylindrical body 21, and a distal end outlet 5a side of the insertion passage 5 is formed. An opening 3 is provided near the tip 21a of the cylindrical body 21 corresponding to the
(13 configurations).

[Function] That is, the present invention has the above-described configuration, so that the cylindrical body 21 through which the insertion portion 201 of the endoscope 200 is inserted.
Since the instrument 300 can be inserted through the treatment instrument insertion passage 5 formed in the treatment instrument 1, the distal end insertion portion of the treatment instrument 300 is not affected by the sliding movement in the body cavity, and the treatment instrument Since the opening 3 is formed in correspondence with the vicinity of the tip 21a of the cylindrical body 21 facing the tip insertion portion of the
02, the raised lesion 102 to be treated can be reliably caught and fixed, making it possible to perform the treatment easily.

[Example] Hereinafter, the present invention will be explained based on the illustrated embodiments.

FIGS. 1 to 3 show a first guide tube for an endoscope according to the present invention.
An embodiment is shown in which 1 is a gripping part and 2 is an insertion part, and the insertion part 2 is entirely formed of a flexible transparent cylindrical body 21 made of polyurethane resin or the like. In the vicinity of the tip 21a of this cylindrical body 21, there is a first opening window 3 that is bored into a substantially rectangular shape with a long side of about 30 squares and a short side of about 7 squares along the longitudinal direction.
is opened with rounded corners, while a second opening window 4 is opened on the rear end 21b side. Then, on the inner wall surface connecting the first and second opening windows 3 and 4 of the n-shaped body 21, a treatment instrument insertion passage 5 is integrally formed along the longitudinal direction by extrusion molding. In this case, treatment instruments such as forceps, which will be described later, are inserted from the first opening window 4 to the second opening window 3, and both openings 5a of the entrance/exit extension 1, 5b is each opening window 3 of 1-2
．． It is located corresponding to 4. Further, the L gripping section 1 is formed of an outer presser 11 and an inner presser 12, and both of these pressers 11.
12, the rear end portion 21b of the cylindrical body 21 shown in -I- is clamped and fixed.

In this way, the guide tube has the gripping part 1 and the insertion part 2 (
11S is the endoscope insertion passage 20, and the insertion passage formed between the first and second opening windows 3 and 4 on the inner wall surface of the bipedal cylindrical body 21. An example of its use is shown in FIG. 4. That is, when treating a protruding lesion, for example, varicose veins 102 in the esophagus 101 in the body cavity of the patient 100, by endoscopic examination, first insert the insertion portion 2 of the guide tube into the patient 100. Insert the esophagus portion 101. Next, the endoscope 2 is inserted into the insertion passage 20 of the guide tube.
Insert the insertion section 201 of No. 00, find the position of the varicose vein 102 while operating the operating section 202, and in this state operate the grip section 1 of the guide tube to open the first opening of the cylindrical body 21. The varicose vein 101 is pressed and captured within the window 3. Then, the treatment tool 3 such as the injection needle is inserted through the second opening window 4 of the cylindrical body 21.
00 up to the vicinity of the first opening window 3, and the lesioned varicose vein 10 caught within the first opening window 3 through the endoscope 200.
2, the treatment tool 200 is pushed in to puncture the patient, injecting a sclerosing agent, and performing sclerotherapy. 5 to 7 show a second embodiment of the guide tube for an endoscope according to the present invention, in which the structure of the first embodiment is improved, and the structure of the cylindrical body 21 is improved. While the first opening window 3 formed near the tip insertion portion 21a is made into a notch,
The insertion passage 5 for the treatment instrument is connected to the separate body 1 or a stage using a thin flexible tube 11, and the rear end 51 is pulled out from the second opening window 4, and a transparent ++J b' is formed by attaching an index a indicating the insertion distance from the first opening window 3 to the outer periphery of the cylindrical body 21 made of a sexual aphrodisiac (it has 11 components. For example, when a guide tube is used for emergency hemostasis, since the entire guide tube is transparent, the bleeding site can be found from inside the guide tube, and furthermore, by the index a attached to the outer periphery of the cylindrical body 21, When the location of the lesion is known at the pre-examination stage, the insertion depth can be easily determined and the lesion can be searched for in a short time.This reduces the examination time and the pain caused to the patient. You can also finish it.

Furthermore, FIGS. 8 to 10 show a third embodiment of the guide tube for an endoscope according to the present invention, in which the outlet side opening of the treatment instrument insertion passage 5 formed on the inner wall surface of the cylindrical body 21 is shown. The lower side 52 on the 5a side is extended, one end of the wire 6 is connected to the extended end 52, the other end of the wire 6 is pulled out from the second opening window 4, and the ring 7 is attached to the finger rest. By pulling the ring 7 as shown by the solid arrow, this finger hook causes the extending end portion 52 to rise upward, thereby causing the distal end portion of the treatment instrument 300 to be inserted to protrude outside from the first opening window 3. The treatment tool 300 has a configuration in which the treatment position of the lesion can be selectively changed easily by guiding the treatment instrument 300 so as to change the direction of the distal end of the treatment instrument 300.

Furthermore, FIG. 11 shows a fourth embodiment of the guide tube for an endoscope according to the present invention, in which the outlet side opening 5a of the treatment instrument insertion passage 5 is aligned with the distal end insertion portion 21a of the cylindrical body 21. , and a slider 8 with a tapered upright surface 8a is provided on the opening 5a side, and a wire 9 is attached to the slider 8.
One end 9a is connected, the wire 9 is pulled out to the grip part 1 side, and the rear end part 9b is attached to the operating screw 10 screwed into the grip part 1, as shown by the solid line arrow of this operating screw 10. By forward and reverse rotation, the wire 9 is reciprocated in the longitudinal direction of the cylindrical body 21, and the bipedal slider 8 is slid, whereby the tapered upright surface 8a of the slider 8 is brought into contact with the first opening window 3. By bringing them close to each other, in a close state,
It is configured to obtain the same functions and effects as the third embodiment.

12 and 13 show fifth and sixth embodiments according to the present invention. In the fifth embodiment shown in FIG. 12, the first treatment instrument insertion passage 50a and the second On the other hand, in the sixth embodiment shown in FIG. The first opening window 3 provided in the vicinity of the distal end side is opened at a different angle from that of the first treatment instrument insertion passage 50a, and the treatment instrument is configured to protrude in a different direction. ing. With such a configuration, two treatment instruments can be used at the same time, and if one is used for fixation and the other for treatment, the treatment of the lesion can be performed more reliably. Moreover, with the configuration of the sixth embodiment shown in FIG. 13, both the axes of the first and second insertion passages 50a, 50b
Since they intersect at the corresponding positions of the first aperture windows 3, even a small lesion caught within the first aperture window 3 can be easily treated.

Note that the present invention is not limited to the two-legged embodiment (ii, 1, etc.), and various modifications may be made without departing from the gist of the present invention.
Of course, it is a skill.

[Effects of the Invention] As is clear from the above description, the present invention provides an insertion passage for a treatment instrument on the inner wall surface of a guide tube made of a cylindrical body through which the insertion portion of an endoscope is inserted. Since an opening is formed near the tip insertion portion of the cylindrical body to which the tip opening corresponds, when treating a raised lesion in a body cavity, the opening of the tip insertion portion of the cylindrical body is By pressing the second part in the direction of the nozzle, you can securely capture the lesion within the opening, and since the insertion passage for the treatment instrument faces the position corresponding to the opening, it is possible to securely capture the lesion with the treatment instrument. This method has excellent effects in that it can treat diseased areas.

[Brief explanation of drawings]

FIG. 1 is a schematic longitudinal sectional side view showing a first embodiment of the guide tube for an endoscope according to the present invention, FIG. 2 is a plan view thereof, and FIG. 3 is a sectional view taken along the line ■-■ in FIG. FIG. 4 is a schematic explanatory view showing the usage state of the guide tube, FIG. 5 is a schematic vertical sectional side view showing the second embodiment of the present invention, FIG. The figures are a sectional view taken along the line ■-■ in FIG. 6, FIG.
10 is a sectional view taken along the line IX-IX in FIG. 9, FIG. 11 is a schematic longitudinal sectional side view showing the fourth embodiment of the present invention, and FIG. Main Part iPPN2 Showing the Fifth Embodiment FIG. 13 is a plan view of the main part showing the sixth embodiment according to the present invention. DESCRIPTION OF SYMBOLS 1... Grip part, 2... Insertion part, 20... Endoscope insertion passage, 21... Cylindrical body, 21a... Tip insertion part, 3... First opening Window, 5... Treatment insertion passage, 5
a... Exit side opening, 200... Endoscope, 201.
...Insertion section, 300...Treatment instrument. Applicant's agent Patent attorney Jun Tsuboi Figure 1 ■ Figure 2 743 Figure 4 Figure 5 WJ Figure 6 Figure 7 WJ

Claims (1)

[Claims] In an endoscope guide tube for inserting and guiding an insertion portion of an endoscope into a flexible cylindrical body inserted into a body cavity, a treatment instrument insertion passage is provided along the inner wall of the cylindrical body. form,
A guide tube for an endoscope, characterized in that an opening is provided near the distal end of the cylindrical body corresponding to the distal end exit side of the insertion passage.