JPS6012029A - 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] This invention applies to endoscopes, especially when it comes to liquid-tight endoscopes as a whole. Sometimes, in addition to cleaning and disinfecting local areas such as the insertion site, endoscopes with a liquid-tight structure are used to clean and disinfect the entire endoscope body. For this reason, it is essential that endoscopes be free of pinholes and cracks, and as a countermeasure to this problem, users have traditionally performed tasks such as water leakage detection.

By the way, water leakage detection is performed by injecting air into the endoscope body to pressurize the entire endoscope body, and by immersing the entire endoscope body in this pressurized state into the needle liquid. It is determined whether the endoscope can be used or not based on the presence or absence of air (bubbles) leaking from the outer wall of the endoscope. Conventionally, air is injected into the endoscope body by protruding an air injection cap on the outer wall of the endoscope body, and connecting an air supply connector such as a socket to this cap. Air is injected from a pump built into the light source device or a separate pump via the injection connector and the cap.

However, if you connect such an air injection connector to the base,
The structure for injecting air requires tight connections to prevent air leaks, so the work involved in injecting air must be done using cumbersome screws, making it inconvenient to use. .

The present invention was made in view of the above-mentioned circumstances, and its purpose is to provide an endoscope that can easily inject the gas necessary for detecting water leakage.

That is, in this invention, a passage is provided in the outer wall of the endoscope body to communicate the inside and outside of the endoscope body, an elastic body is provided in this passage so as to close the passage, and the elastic body is pierced to allow the inside of the endoscope to be inserted. The purpose is to inject gas into the endoscope body to detect water leakage.

The present invention will be explained below based on a first embodiment shown in FIGS. 1 and 2. FIG. 1 shows an endoscope, and numeral 1 in the figure is an endoscope main body that is constructed by connecting an insertion section 2, an operation section 3, a universal cord 4, and a connector 5. Further, 6 is an eyepiece provided in the operating section 3, and 7 is also the operating section 3.
8 is a light guide section provided at the tip of the connector 5, 9 is an air supply pipe also provided at the tip of the connector 5, and IO is provided on the side of the connector 5. Suction cap, 11 is the ground terminal also provided on the side of connector 5, 12 is the same < coz
Numbers 6 and 19 are also water supply caps. The endoscope main body 1 configured as described above is airtight throughout.
There are 7.

A new air injection part 13 is provided.

The structure of the air injection section 13, which is the essential part of the present invention, is shown in detail in FIG. This is a passage provided to communicate the inside and outside of this air column 3. This passage 14 communicates with various components of the endoscope body 1 such as the insertion part 2, the universal cord 4, and the connector 5 through the operation part 3.
The entire inside of the endoscope body 1 is communicated with the outside of the endoscope body 1.

The inner peripheral wall on the outside side of this passage 14 has a female thread 1.
A ring-shaped stopper installation recess 15 with 52L carved therein is formed.

On the other hand, numeral 16 in the figure is a plug unit. This integrated unit 16 has a stopper housing chamber 18 formed in the center of a ring-shaped holder 17, and an elastic body, for example, highly elastic and pierceable, is formed in the stopper housing chamber 18. Insert a thick rubber plate 19, plug this thick rubber plate 19,
, a ring-shaped fixture 20 for the dormant chamber 18
It is configured to be clamped and fixed by screw insertion. The plug unit 16 configured as described above is detachably inserted into the plug installation recess 15 and attached to the C-. However, it goes without saying that the rubber plate 19 is provided with male threads 16a corresponding to the passages 15a so as to close the openings of the passages 14, and in FIG. 2, 22 is a recess for installation. 15 and the holder 17, an O-ring provided on the ruler 17 side, 23... is an engagement recess used for fixing or removing the plug unit 16 and the fixture 20. be.

On the other hand, 24 in the figure is a tube. The base side (not shown) of this tube 24 is equipped with, for example, a light treatment device (not shown).
It is connected to the discharge part of the air pump installed inside. A small-diameter piercing pipe 25 is connected to the tip of the tube 24, and the tip of the piercing pipe 25 is pierced by passing the rubber plate 9 through the rubber plate 9. Pyg 25
The air (gas) necessary for HD water detection can be injected into the endoscope body 1 through the rubber plate 19.
In addition, it has the ability to prevent air leakage due to its expansion/contraction and restoring force during removal.

However, it is configured like this and there are 4! ! When injecting air (gas) into the interior of the mirror to detect water leakage, the piercing pipe 25 is brought close to and pierced through the rubber plate 19, and its tip is placed on the passage 14 side. Then, in this state, if the air pump of the mugen device (not shown) is operated, #
i, Pressurized air is supplied to the insertion section 2 via the operating section 3 through the piercing pipe 25 as shown by the two-dot chain line in Figure 2.
The air is injected into each part such as the universal cord 4 and the connector 6, and the air necessary for water leakage detection is injected into the entire interior of the endoscope body 1. At this time, rubber plate 1
In case 9, no air leakage occurs because the elastic displacement caused by piercing acts as a valve.

When the required injection is completed, the piercing pipe 25 is removed from the rubber plate 19, and the rubber plate 19 is restored.
This results in occlusion of the interpuncture area that occurs at the puncture site.

In this way, the air (gas) necessary for water leakage detection can be injected by simple injection operations such as puncturing and removal without causing air leakage. Moreover, by making the area around the rubber plate 19 into a single unit and attaching it to the endoscope body 1 in a detachable manner, the rubber plate 19 can be easily attached.
It has the advantage of being easy to replace.

Further, the present invention is not limited to the first embodiment described above, but may be modified, for example, to a second embodiment shown in FIG.

In other words, the one shown in Fig. 3 is one in which the rubber plate 19 is detachably attached as a single unit, as opposed to the one in which the rubber plate 19 is attached using the above-mentioned unit structure. In the recess 15 for plug installation formed in the outer wall 3a of the section 3, a recess 30 for promoting elastic force is provided on the back side. A thick rubber plate 31 is inserted into the recess 15 of the fixture 32, which is formed into a ring shape.
It is designed to be clamped and fixed by inserting a screw inward, and even in this case, the same effect as in the first embodiment described above can be obtained.

In each of the above-mentioned embodiments, an example in which a thick rubber plate and a passage were provided as an elastic body in the operation part was shown as an example, but the invention is not limited to this in any way. It may be provided on the connector or other parts, as long as it is provided on the endoscope body. In addition, it is not limited to a thick rubber plate, and other highly elastic members may be used to form an elastic body.In addition, in the first and second embodiments described above, the Use an air pump to pump air (
However, it is also possible to inject air (gas) into the endoscope body using another pump or a small cylinder filled with compressed air in advance. good.

As explained above, according to the present invention, a 1 m path communicating between the inside and outside of the endoscope body is provided on the outer wall of the endoscope body, and an elastic body is provided so as to close the passage. □
By piercing the endoscope and injecting the gas necessary for water leak detection into the interior of the endoscope body, it is now possible to inject the gas necessary for water leak detection with a simple injection process such as puncturing and removal. , ease of use can be achieved.

[Brief explanation of drawings]

1 and 2 show a first embodiment of the invention,
FIG. 1 is a perspective view of an endoscope, FIG. 2 is a sectional view showing the structure of its injection system, and FIG. 3 is a sectional view showing a second embodiment of the present invention. 1... Endoscope body, 13... Air injection part, 14...
・Passway, 19.31...Rubber plate (elastic body), 25...
- Piercing pipe. □ Applicant's representative Patent attorney Takehiko Suzue *1 Figure 2 Figure 3 Figure 2 2-43-2 Hatagaya, Shibuya-ku, Tokyo Lymphus Optical Industry Co., Ltd. 0 Inventor Hiroki Hibino 2 Hatagaya, Shibuya-ku, Tokyo Inventor: Akifumi Ishikawa, No. 43-2, Lymphus Optical Industry Co., Ltd. Inventor: Akifumi Ishikawa, 2-43-2, Hatagaya, Shibuya-ku, Tokyo, Internal Procedures Amendment Form 11fl Director of the I Office, Kazuo Wakasugi, Indication of the case, Patent Application No. 118973/1989 2, Name of the invention: Endoscope 3, Person making the amendment Relationship to the case: Patent applicant (037) Orin Mosu Optical Industry Co., Ltd. 4. Agent 5゜6. Drawing subject to amendment 7゜ Drawing, Figure 2 is amended as shown in the attached sheet. (4B, ;.

Claims (1)

[Claims] A passage is provided in the outer wall of the endoscope body to communicate between the inside and outside of the endoscope body, an elastic body is provided in this passage so as to close the passage, and the elastic body is pierced to open the endoscope body. An endoscope that is characterized by injecting gas into the interior to detect water leakage.