JPH01204637A - 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 provided with a treatment tool insertion channel through which a treatment tool such as a laser probe can be inserted.

[Prior Art] In recent years, laser light has been widely used for treatment, and in particular, attempts have been made to use it for treatment of affected areas within body cavities, but various problems remain.

For example, the emission tip surface of the laser probe is easily contaminated by dirt and the like inside the body cavity. This laser probe is usually introduced into a body cavity through an endoscope's treatment tool insertion channel and emits a laser beam to incise the affected area.
If dirt or the like adheres to the emitting tip surface of this laser probe within the body cavity, there is a drawback that the end surface will be burnt when irradiated with laser light.

In order to prevent this, it is necessary to repeatedly pull out the laser probe from the endoscope, clean the emitting tip surface, and reinsert it each time.

[Problems to be Solved by the Invention] As described above, when the emission tip surface of the laser probe becomes contaminated with dirt or the like inside the body cavity, the laser probe must be pulled out from the endoscope each time and the emission tip surface must be cleaned. Must be. Therefore, work efficiency was extremely low and prompt treatment was not possible.

The present invention was made in view of the above-mentioned problem, and
The purpose of the white color is to provide an endoscope that can clean the dirt on the emission tip of the laser probe without having to take it out each time, improving work efficiency and allowing prompt treatment.

[Means for Solving the Problems and Their Effects] In order to solve the above problems, the present invention provides an endoscope provided with a treatment tool insertion channel through which a treatment tool such as a laser probe can be inserted. A cleaning fluid spout is provided for spouting cleaning fluid toward the distal end of the treatment instrument protruding from the distal opening.

Therefore, even if the tip of a treatment tool such as a laser probe becomes dirty with dirt from the body cavity, the dirt can be immediately cleaned and continued use without having to be pulled out of the endoscope's treatment tool insertion channel. can do. Therefore, work efficiency can be improved and prompt treatment can be performed.

[Embodiment] FIG. 1 shows a first embodiment of the present invention. 1st
In the figure, 1 indicates the distal end of the insertion section 2 of the medical endoscope. The insertion section 2 of this endoscope is provided with a treatment instrument insertion channel 5 through which a treatment instrument 15 such as a laser probe 4 is inserted, and the distal end opening 6 of this channel 5 faces forward in the longitudinal axis direction of the insertion section 2. It is open. That is, when a treatment tool such as the laser probe 4 is inserted through this channel 5, the treatment tool can be projected forward in the longitudinal axis direction of the insertion section 2. The treatment instrument insertion channel 5 communicates with an insertion opening (not shown) provided in an operating section (not shown) connected to the proximal end of the insertion section 2, and can be introduced from this insertion opening. ing. In addition, the distal end 1 of the insertion section 2
The direction can be changed by bending the bending part 6 inserted in front of the bending part 6 by remote control of the operating part.

Further, the insertion section 2 of the endoscope is provided with a liquid feeding passage 7 in addition to the treatment instrument insertion channel 5.

This liquid feeding passage 7 consists of a cleaning liquid spout 8 that opens on the distal end surface of the distal end portion 1 in line with the tip opening 6 of the treatment instrument insertion channel 5, and a liquid feeding tube 9 that communicates with this. The liquid feeding tube 9 is guided to the proximal side of the endoscope through the inside of the insertion section 2, and is connected to a liquid feeding pump (not shown). Then, the liquid is fed when necessary by a liquid feeding control means (not shown).

Further, the cleaning liquid spout 8 is inclined toward the distal end opening 6 of the treatment instrument insertion channel 5 provided side by side, and is configured to spout the liquid obliquely forward thereof. In other words, the liquid is ejected diagonally forward so as to hit the tip of a treatment instrument such as the laser probe 4 protruding from the tip opening 6 of the treatment instrument insertion channel 5.

The light guide fiber of the laser probe 4 is made of a material that has a high transmittance for the CO2 laser light, such as KRS-5 (thallium bromide and thallium iodide), depending on the laser light to be used, for example, when a CO2 laser is used. Mixed crystal with:
TI! Br-T, i'I), etc. are used.

Therefore, when using this endoscope, the insertion section 2
After the laser probe 4 is introduced into the body cavity, the laser probe 4 is inserted through the treatment instrument insertion channel 5, and the tip of the laser probe 4 is protruded and directed toward the affected area under observation using the endoscope. Then, laser light is irradiated onto the affected area through the laser probe 4 to perform treatment.

In such operations, the emission tip surface of the laser probe 4 may become contaminated with dirt in the body cavity. If laser light irradiation is continued in this state, there is a risk that the end face will be burnt by the laser light, so the emission end face is cleaned as follows. That is, as shown in FIG. 1, the distal end of the laser probe 4 is slightly protruded, and after confirming this by observing with an endoscope, for example, Cleaning liquid is supplied from the liquid passage 7, and a predetermined amount of cleaning liquid is spouted from the cleaning liquid spout 8 of the liquid feeding passage 7. This ejected flow of cleaning liquid washes the tip surface of the laser probe 4 and removes dirt from the tip surface. Therefore, the distal end surface of the laser probe 4 can be cleaned cleanly while it is inserted without having to take the trouble of pulling it out from the endoscope. Further, since the tip end face of the laser probe 4 can be kept clean at all times in this way, end face burning due to laser light can be prevented. Therefore, in particular, CO2
In the case of the laser probe 4 for a laser, generation of toxic gas can be prevented from the material of the light guide fiber.

In addition, although the said Example demonstrated the flexible endoscope, it is not limited to this and a rigid endoscope may be sufficient.

FIG. 2 shows a second embodiment of the invention. In this embodiment, unlike the first embodiment, the cleaning liquid spout 8 is not formed to be inclined toward the distal opening 6 side of the treatment instrument insertion channel 5, but the elastic restoring force that communicates with the treatment instrument insertion channel 5 is A flexible tube 11 is provided to protrude, and this forms a cleaning liquid spout 8 of +1M. An operating wire 12 is attached to the tip of the flexible tube 11.
are connected, and this operating wire 12 connects the flexible tube 11
The distal end portion is curved so as to be inclined toward the distal opening 6 side of the treatment instrument insertion channel 5. The operating wire 12 is guided through a guide tube 13 disposed within the insertion section 2 to an operating section on the proximal side, and is operated by pushing or pulling.

Therefore, by pulling the distal end of the flexible tube 11 with the operating wire 12 and tilting it toward the distal opening 6 of the treatment instrument insertion channel 5, it can be slightly moved away from the distal end 1 of the endoscope in the same way as described above. The cleaning liquid can be sprayed toward the tip of the protruding laser probe 4 to clean the tip surface. therefore,
In this case as well, the tip surface of the laser probe 4 can be cleaned without being pulled out from the endoscope.

Note that other structural functions, etc. are the same as in the above embodiment.

3 and 4 show a third embodiment of the present invention. In this embodiment, as shown in FIG. 3, the cover glass 22 of the image guide 21 and the distal opening 6 of the treatment instrument insertion channel 5 are installed in the installation direction, and the cleaning liquid spout 8 of the liquid supply passage 7 is placed on the cover glass 22 side. Furthermore, as shown in FIG.
It is directed toward the tip opening 6 side. In addition, in FIG. 4, 24 and 24 are cover glasses of a light guide (not shown).

Therefore, in the endoscope of this embodiment, when cleaning dirt on the distal end surface of the laser probe 4 introduced into the body cavity through the treatment instrument insertion channel 5, the laser probe is inserted into the distal opening 6 of the treatment instrument insertion channel 5. If the tip of the probe 4 is faced (protruded), the cleaning liquid is supplied through the liquid supply passage 7, and the cleaning liquid is jetted from the cleaning liquid spout 8, the jet flow of this cleaning liquid will be directed to the outer surface of the cover glass 22 of the image guide 21. Along the tip opening 6 of the treatment instrument insertion channel 5
Wash the tip surface of the laser probe 4 located at the top to remove dirt from the tip surface. Therefore, the distal end surface of the laser probe 4 can be thoroughly cleaned without being pulled out from the endoscope. Furthermore, in this embodiment, the outer surface of the cover glass 22 of the image guide 21 can be cleaned at the same time as the tip surface of the laser probe 4.

FIGS. 5 and 6 show examples of disclosure.

In this disclosed example, a sponge member 33 is provided in a distal opening 32 of an insertion channel 31 of an endoscope 30, and this sponge member 33 is held by a cylindrical holder 34. This holder 34 is attached to the tip opening 3 of the insertion channel 31.
2 by means of a screw 35 in a detachable manner.

Furthermore, as shown in FIG. 6, the sponge member 33 is provided with a cross-shaped cut 36 for inserting a treatment tool therethrough.

Note that an objective lens system 38 and a nozzle 39 are provided at the distal end 37 of the endoscope 30, and an image guide 40 is connected to the objective lens system 38.

Further, a passage 41 communicates with the nozzle 39 .

When using a treatment instrument through the insertion channel 31 of the mirror 30 inside '6J, for example, a laser probe 42 for CO2 laser is inserted, and the cross-shaped sponge member 33 at the tip opening 32 of the insertion channel 31 is inserted. It is used by protruding through the notch 36.

When the tip surface of the laser probe 42 becomes dirty, the laser probe 42 is pulled into the cross-shaped notch 36 of the sponge member 33 and the dirt is wiped off from the tip surface to clean it.

Further, in this disclosed example, the tip opening 32 of the insertion channel 31 through which the laser probe 42 is inserted is formed by a sponge member 33.
Since it is covered with , it can prevent dirt etc. from getting inside.

Further, since the "-2 sponge member 33 is removable, it can be replaced with a new one if it becomes dirty.

FIGS. 7 and 8 show other disclosed examples. This is a distal end 37 of an endoscope 30 similar to the disclosed example described above, and a rotatable wiper brush 51 is provided in the distal opening 32 of the insertion channel 31. This wiper brush 51 is connected to the tip of a shaft 52 inserted into the insertion portion 2.

The wiper brush 51 is pivoted or rotated by the rotational force transmitted by the shaft 52, and can wipe the tip surface of the laser probe 42 facing the tip opening 32 of the insertion channel 31 to remove dirt. There is. Further, when using other treatment instruments, the tip surfaces thereof can be similarly cleaned.

Note that during normal use in which the tip of the laser probe 42 is projected from the tip opening 32 of the insertion channel 31, the wiper brush 51 is inserted into the tip opening 32 of the insertion channel 31.
Please evacuate from there.

Further, the distal end portion 37 of this endoscope v130 is also provided with an objective lens system 38, a nozzle 39, etc., as in the above disclosed example.

[Effects of the Invention] As explained above, the present invention provides an endoscope provided with a treatment instrument insertion channel through which a treatment instrument such as a laser probe can be inserted, and a treatment instrument protruding from the distal opening of the channel for this treatment instrument type. It is equipped with a cleaning liquid spout that spouts cleaning liquid toward the tip.

Therefore, even if the tip of a treatment tool such as a laser probe becomes dirty with dirt from the body cavity, the dirt can be immediately cleaned and used without having to be pulled out of the endoscope's treatment tool insertion channel. You can continue. Therefore, work efficiency can be improved and prompt treatment can be performed.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the distal end of an endoscope according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the distal end of the endoscope according to the second embodiment of the present invention, and FIG. FIG. 4 is a front view of the endoscope tip of the third embodiment, and FIG. 5 is a cross-sectional view of the endoscope tip of the third embodiment. A cross-sectional view, FIG. 6 is a perspective view of the sponge member of the disclosed example, and FIG.
The figure is a cross-sectional view of the distal end of an endoscope according to another disclosed example, and FIG. 8 is a front view of the distal end of the endoscope according to the disclosed example. 2... Insertion section, 4... Laser probe, 5... Channel for insertion of treatment instrument, 8... Cleaning liquid spout, lobe. Applicant's representative Patent attorney Jun Tsuboi Figure 2 Figure 4 Figure 3 Figure 5 Figure 6

Claims (1)

[Scope of Claims] In an endoscope provided with a treatment instrument insertion channel through which a treatment instrument such as a laser probe can be inserted, cleaning liquid is jetted toward the tip of the treatment instrument protruding from the tip opening of the treatment instrument insertion channel. An endoscope characterized by being provided with a cleaning liquid spout for cleaning.