JPH09140668A - Plug for cleaning tube inside of endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correctly discriminate how to mount by any one, by forming a picture mark displaying the difference in size and shape of a cylinder to be mounted by a plurality of mounting parts on the surface of a thumb nut corresponding to the positions to be mounted. SOLUTION: Picture marks 34a and 34b representing difference in the size and the feature of opening between a cylinder 11 for supplying air and water and a cylinder 12 for aspirating air are formed on the surface of a plug 30 for cleaning by adjusting to the position of the mounting part on the back side, and the surface of a thumb nut 30c is formed of a rubber with a little convexity. Therefore, if a mold for rubber molding is engraved with the picture pattern once, any cost for members for forming the picture patterns 34a and 34b becomes unnecessary, and an operator for cleaning the endoscope can surely discriminate the direction for mounting the cleaning plug 30 to both cylinders 11 and 21 by comparing the picture marks 34a and 34b with the shape of opening of the cylinders 11 and 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a valve body for pipe line switching removed in order to flow a cleaning liquid into a fluid pipe line and a pipe line switching valve of the endoscope after the endoscope is used. The present invention relates to a plug for cleaning an inside of a duct of an endoscope for closing a mouth opening of a rear cylinder.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional pipe line cleaning plug of an endoscope, and 11 is a cylinder of an air / water supply line switching valve,
Reference numeral 21 is a cylinder of the suction line switching valve.

The cylinders 11 and 21 have different inner diameters, and their mouth openings are exposed and arranged on the outer surface of the operating portion 1. Reference numerals 14 and 24 are indexes surrounding the cylinders 11 and 21 and formed in different colors.

The cleaning plug 90 has fitting portions 90a and 90b fitted into the mouth openings of both cylinders 11 and 21.
Is formed integrally with the grip portion 90c on the proximal side by elastic rubber.

The fitting portions 90a and 90b are connected to the cylinder 1 through the fluid lines 12a to 12d, 22a and 22b.
Since the cleaning liquid flowing into the inside of 1, 21 should not leak,
The cylinders 11 and 21 are tightly fitted.

On the hand side surface portion of the knob portion 90c,
In order to indicate in which of the two cylinders 11, 21 the two fitting parts 90a, 90 are to be fitted, for example, as shown in FIG.
Indicators 14 and 24 provided around the mouth openings 1 and 21
Color marks 94a and 94b of the same color combination are marked. Further, for example, as shown in FIG. 8, there is one in which an A / W character indicating air / water supply and an S character indicating suction are marked.

[0007]

However, in order to form a mark of two colors on the cleaning plug formed by integrally molding rubber as described above, it is necessary to perform rubber molding of three colors. The component cost will be very high.

[0008] Further, in the case where the characters are distinguished by letters such as A / W and S, the meaning may be difficult to understand by an operator who performs cleaning after using the endoscope, and the correct mounting may not be known. .

Therefore, an object of the present invention is to provide a stopper for cleaning the inside of a conduit of an endoscope which requires no manufacturing cost and allows anyone to correctly determine the mounting method.

[0010]

In order to achieve the above-mentioned object, an endoscope cleaning plug for an endoscope according to the present invention is provided with a plurality of juxtaposed cylinders whose mouth openings are not the same in size and shape. After removing the path switching valve element, a plug for cleaning the inside of the duct of the endoscope for fitting the mouth openings of the plurality of cylinders from the outside to close the mouth openings, and In the one in which a plurality of fitting parts fitted into the opening are integrally molded with the grip part on the proximal side,
It is characterized in that a graphic mark indicating a difference in dimensional shape of the cylinder into which the plurality of fitting portions are to be fitted is formed on the surface of the knob portion in correspondence with the positions of the plurality of fitting portions.

[0011]

Embodiments of the present invention will be described with reference to the drawings. FIG. 2 shows the operation unit 1 of the endoscope, 10 is an air / water supply conduit switching valve for performing an air / water supplying operation, and 20 is a suction conduit switching valve for performing a suction operation, Reference numerals 19 and 29 are operation buttons that are pushed in to perform the operation.

FIG. 3 shows an enlarged view of the air / water supply conduit switching valve 10 and the suction conduit switching valve 20, where 11 is the cylinder of the air / water conduit switching valve 10 and 21 is the suction. It is a cylinder of the conduit switching valve 20. Both cylinders 11 and 21 are formed to have a circular cross section to the inside.

However, as shown in FIG. 4 which shows the shapes of the mouth openings 11a and 21a of both cylinders 11 and 21, the suction side cylinder 21 is formed with a small circular bulge in the cross section of the portion near the mouth. Therefore, it is welded and connected to two parts for manufacturing convenience.

In each of the cylinders 11 and 21, a piston-shaped conduit switching valve body (not shown) is normally inserted so as to be movable back and forth in the axial direction, and operation buttons 19 and 2 are provided at the tips thereof.
9 are connected.

However, at the time of cleaning after using the endoscope, FIG.
As shown in FIG.
9 and 29 and the like are removed from the cylinders 11 and 21 to the outside, so that the mouth openings 11a and 21a of the cylinders 11 and 21 are exposed to the outer surface of the operation unit 1.

Both of the cylinders 11 and 21 are fixed to the operation portion 1 by fixing nuts 13 and 23 which are screwed from the outside to the outer peripheral thread portion of the mouth portion protruding to the outer surface of the operation portion 1. Reference numerals 15 and 25 are O-rings for sealing.

Inside the operation unit 1, the air / water supply side cylinder 11 is connected with an air supply pipe 12a, a water supply pipe 12b, an air supply pipe 12c and a water supply pipe 12d, and the suction side cylinder 21 is provided with a suction pipe 22a and forceps. Communication pipe to channel 2
2b is connected.

FIG. 1 shows such two cylinders 11, 21.
It shows a state in which the pipe-way cleaning plug 30 is attached to the mouth openings 11a and 21a. In the cleaning plug 30, short rod-shaped fitting portions 30a and 30b, which are fitted into the mouth openings 11a and 21a of both cylinders 11 and 21, are arranged according to the space between the air and water feeding side cylinder 11 and the suction side cylinder 21. It is arranged and is integrally formed with the grip portion 30c on the near side by a rubber material having elasticity. Therefore, both fitting portions 30
It is possible to fit a and 30b into both cylinders 11 and 21 at the same time.

Both fitting portions 30a and 30b have an outer diameter of both cylinders 1 so that they can be fitted into the mouth openings 11a and 21a of both cylinders 11 and 21 in a deformed state.
It is formed to be slightly thicker than the inner diameters of the mouth openings 11a and 21a of 1, 21.

The cross-sectional shapes of both fitting portions 30a and 30b are the mouth openings 11a and 2 of both cylinders 11 and 21.
According to the cross-sectional shape near 1a, the air / water feeding side fitting portion 30a is formed in a circular shape, and the suction side fitting portion 30b.
Is formed in a two-step circular shape as shown in FIG.

Conical recesses 30d and 30e are formed in the end surface portions on the inner side of both fitting portions 30a and 30b. The dents 30d and 30e have a bottom diameter of about half to three quarters of the diameter of the fitting portions 30a and 30b, and the vertices of the dents 30d and 30e are located at the mouth openings 11a and 21a of the cylinders 11 and 21. Has been formed.

Therefore, the fitting portions 30a, 30b
When the is fitted into the cylinders 11 and 21, the fitting portions 30a and 30b made of rubber are relatively easily deformed inward with a space due to the recesses 30d and 30e, so that the fitting operation is not hard and the fitting is relatively difficult. Can be easily fitted.

Further, since the recesses 30d and 30e are formed in a conical shape, the fitting state becomes gradually harder as it is fitted further into the interior, and the sealing property is improved. Further, when the pressure of the cleaning liquid is applied to the inside of the cylinder in the completely fitted state, the force acts in the direction in which the conical recesses 30d and 30e expand, so that the sealing property is further enhanced and the leakage does not occur.

When the fitting portions 30a and 30b are completely fitted into the cylinders 11 and 21, hook portions 30f formed at both ends of the grip portion 30c are formed at the projecting end portions of the fixing nuts 13 and 23. The collar part 16,2
6 is caught and acts as a stopper.

On the surface of the cleaning plug 30, as shown in FIG. 5, air supply / water supply side cylinder 11 and suction side cylinder 21 are provided.
The graphic marks 34a and 34b indicating the difference in the size and shape of the mouth openings 11a and 21a of the front side are the fitting portions 30 on the back side.
It is formed in alignment with a and 30b.

As shown in FIG. 1, both the graphic marks 34a and 34b are formed by rubber-molding the surface of the knob portion 30c by slightly protruding (or retracting).

Therefore, if the graphic shape is engraved in the rubber molding die, no parts cost is required for forming the graphic marks 34a and 34b. Then, the operator who cleans the endoscope uses the graphic mark 34a,
By comparing 34b with the mouth shapes of both cylinders 11 and 21, the cleaning plug 3 for both cylinders 11 and 21 is compared.
The mounting direction of 0 can be determined without error.

[0028]

According to the present invention, a graphic mark indicating the difference in dimensional shape of the cylinder into which a plurality of fitting portions are to be fitted is formed on the surface of the grip portion of the cleaning plug, which is a molded product. Since there is no component cost for forming the mark, anyone can correctly determine the mounting method by using the graphic mark in comparison with the dimensions and shapes of a plurality of cylinders at the time of use.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state where a cleaning plug according to an embodiment of the present invention is attached to a cylinder.

FIG. 2 is a side view of the operation portion of the endoscope according to the embodiment of the present invention.

FIG. 3 is a side sectional view of a cylinder portion according to the embodiment of the present invention.

FIG. 4 is a front view of the mouth opening of the cylinder according to the embodiment of the present invention.

FIG. 5 is a front view of a graphic mark according to the embodiment of the present invention.

FIG. 6 is a side sectional view showing a state where a conventional cleaning plug is attached to a cylinder.

FIG. 7 is a front view of a conventional mark.

FIG. 8 is a front view of another conventional mark.

[Explanation of symbols]

 11, 21 Cylinder 30 Cleaning plug 30a, 30b Fitting part 30c Grip part 34a, 34b Graphic mark

Claims (1)

[Claims] 1. A pipe path switching valve element is removed from each of a plurality of cylinders arranged side by side that do not have the same size and shape of mouth openings, and then fitted into the mouth openings of the plurality of cylinders from the outside to open the mouth openings. A plug for cleaning the inside of a conduit of an endoscope for closing, wherein a plurality of fitting portions fitted into the mouth openings of the plurality of cylinders are integrally formed with a grip portion on the proximal side, wherein the plurality of fitting portions A conduit for an endoscope characterized in that a graphic mark indicating a difference in dimensional shape of a cylinder into which each part is to be fitted is formed on the surface of the knob part corresponding to the positions of the plurality of fitting parts. Internal cleaning plug.