JPS6012033A - 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 The present invention relates to an endoscope, particularly to an endoscope having an overall liquid-tight structure.

・Used endoscopes are often cleaned and disinfected, but recently, in addition to cleaning and disinfecting local parts such as the insertion site, the entire endoscope has been designed to have a liquid-tight structure. The entire endoscope itself is cleaned and disinfected. For this reason, it is essential that endoscopes be free of pinholes and cracks, and as a countermeasure for this, tasks such as water leakage detection have traditionally been carried out by users.

However, water leak detection involves injecting air or air into the interior of the endoscope body, pressurizing the entire interior of the endoscope body, and then immersing the entire pressurized endoscope body in liquid. 1. Determine whether or not the endoscope can be used in areas where air (bubbles) leak from the outer wall of the endoscope body. There is something that is true.

By the way, in order to inject the air necessary for water leakage detection, conventionally, air is injected into the light guide connector that forms the endoscope body, and air is used to connect the inside and outside of the endoscope body for leak detection. An injection cap is provided, and an injection connector such as a light source device and an internal air pump, or a socket connected to a separate pump, is connected to the air column and the apricot door plate. Pressurized air is supplied to the endoscope through the mouthpiece,
It is injected throughout the body. , However, such a light guide connection? Rini leakage! The light guide connector itself is equipped with various types of caps, such as water supply caps and CO20 gold, to prevent leakage. A cap designed specifically for inspection is sometimes used only for detecting water leaks, which poses a problem in that it gets in the way when handling the endoscope.

This invention was made in view of the above-mentioned circumstances, and its purpose is to provide an endoscope in which a cap dedicated to detecting water leakage, which tends to get in the way, can be removed from the endoscope body. That is, the present invention originally eliminates the need for grounding by providing a replacement means for replacing the grounding terminal provided on the endoscope body with a water leakage detection base that communicates with the inside of the endoscope body. The purpose of this project is to replace the ground terminal used for water leakage with an injection part that can inject the air necessary for water leakage detection.

The present invention will be explained below based on a first embodiment shown in FIGS. 11 to 3. FIG. 1 shows an endoscope, in which reference numeral 1 indicates an insertion section 2. Operation unit 3゜Universal cord 4. This is an endoscope main body configured by connecting light guide connectors 5. The interiors of the respective components constituting the endoscope main body 1 communicate with each other, and the entirety is airtight. Further, the operation section 3 is provided with an eyepiece section 6 and an angle knob 7, so that the front side of the insertion section 2 can be viewed from the eyepiece section 6, and the insertion section can be inserted by operating the angle knob 7. Part 2 can be bent. The light guide connector 5 also has a light guide section 8 located at its tip that guides the illumination light to the front of the insertion section 2 through the universal cord 4, the operation section 3, and the insertion section 2, as well as a light guide section 8 that guides the illumination light to the front of the insertion section 2. Air supply nob portions 9 are provided in a protruding manner to receive the air and guide the air to the front of the insertion portion 2 through the endoscope body 1. Further, on the side of the light guide connector 5, a ground terminal 16. Suction cap 11. A water supply cap 12 and a CO20 metal 13 are respectively provided, and through each cap, it is possible to ground, perform suction, water supply, 00, “'. There is.

And the ground terminal 16 of the endoscope configured in this way
is provided with a replacement means for replacing the ground terminal 16 with a cap for water leakage detection. The structure of the replacement means, which is the essential part of this invention, is shown in detail in FIG.

To explain the structure of this replacement means, in the figure, 15 is the connector body of the guide connector 5, 16 is a threaded portion 16a on the outer periphery, and a through hole 16'b for sliding is formed inside along the axial direction. The above-mentioned ground terminal is provided and configured. Further, 17 is a bottomed cylindrical cylinder which is formed by integrally connecting a nozzle part 1"7a at its tip. Inside this cylinder pipe 17 and pino part 7a, A piston 18 integrally formed with a slide rod 18h is slidably inserted, and the piston 18' can move forward and backward within the cylinder tube 17, and the slide rod 18m can move forward and backward through the noob part 17a. There is still a coil spring 19 between the piston 18 and the inner bottom of the cylinder 17.
is interposed, the piston, 8 and the slide rod 1
The connector body 15 is attached to the connector main body 15 in such a manner that it penetrates the side wall of the elastic body 15 and projects outward, and the above-mentioned earth terminal 16 is attached to the tip of the projecting pipe portion 17h.
are integrated. However, the ground terminal 16 is attached to the connector body 15 via the cylinder tube 17. The tip of the slide rod 18a is slidably disposed within the through hole 16b, and faces a recess 16c formed in the head of the ground terminal 16. In addition, the piston 18
Furthermore, inside the slide rod 18h, a communication passage 20 is provided along the axial direction, and the piston 18 is provided with an opening cylinder in the radial direction that communicates with the base of the communication passage 20. Ports 22.22 that open into the connector body 15 are provided on the peripheral wall of the cylinder 16 at positions that communicate with the communication path 21 only when the piston 18 is pushed down as required through the slide rod 18g. 22 to communicate with the inside of the endoscope body 1.The opening of each date 22 and 22 is as follows.
Under normal conditions, it is closed, and communication is established when the piston 18 is pushed down as required. A grounding wire 23 is connected to the cylinder tube 16, and a grounding socket 24, which is normally used for grounding, or an air injection socket 25 for detecting water leakage can be connected to the grounding terminal 23. Alternatively, the function of the ground terminal 10 can be replaced with a cap for detecting water leakage, if necessary. In other words, ground socket 2
4 is the ground terminal 16 as shown by the dashed-dotted line in FIG.
It consists of a socket main body 24& that can be screwed into the ground wire 23. cylinder tube 17,
Piston 18. It is possible to connect to the ground through the slide rod 18a, the ground terminal 16, and the connection cord 26 of the socket 524. Note that each component constituting the cylinder mechanism 19h is of course electrically conductive. In addition, as shown in FIG. 3, the air injection socket 25 has a slide rod 18& which is attached to the inner bottom of the socket body 25m which can be screwed onto the ground terminal 16 when the socket body 25m is screwed into the ground terminal 16. The communication passage 21 for the eel, that is, the port 22.
ij-shaped abutment part 2 that is pressed down so that it communicates with the
7 are integrally provided in a protruding manner. The perforated portion 27 has an outer diameter that can be inserted into and removed from the through hole 16b of the ground terminal 16, and a passage 27 corresponding to the opening of the communication passage 20.
a, connect the socket body 25h to the ground terminal 16
By fixing it with screws, the inside of the endoscope main body 1 and the air injection socket 25 are communicated through the ports 22.
．． 21 and port 22.2.2 allows for the injection of pressurized air for leakage and water detection. However, the cylinder mechanism 19a, the air injection socket, and the ground socket 24 of 25
Compatible structure for light guide connector 5
It constitutes a replacement means that can use the earth terminal 16 provided in the holder as it is and replace it with a cap for water leakage detection. Note that the air injection socket 25 is connected to the tube 28.
It is connected to an air supply source such as an air supply pump built into a light source device (not shown) via etc. In FIG.
6, in Figure 3, 30
An O-ring seals between the abutting portion 27 and the inner surface of the through hole 16j3 of the ground terminal 16 that is in contact with the abutting portion 27.

When grounding an endoscope configured in this way, the ground socket 24 is screwed into the ground terminal 16 and fixed, and the ground terminal 16. Slide rod 1
The grounding wire 23 and the grounding socket 24 are electrically connected through the piston 18° cylinder tube 17, and grounding can be established in the same way as in the conventional case.

Also, when injecting air to detect water leaks,
, If the air injection socket 25 shown in FIG.
are the slide rod 18a and the piston! 8 will be pushed down to communicate the communication path 21 with the ports 22 and 22.

Here, the grounding element 16 is replaced with a cap for detecting water leakage.

However, the interior of the endoscope body 1, which had been isolated, now communicates with the air injection socket 25 through the ports 22, 22 and the cylinder mechanism, and pressurized air necessary for water leakage detection can be supplied from the air injection socket 25. It becomes possible to inject into the inside of the endoscope body 1.

In this way, the ground terminal 16 can be replaced with a part that can inject the necessary air to detect water leaks, and the base exclusively for water leak detection, which is easy to get in the way, can be replaced with an endoscope. It can be excluded from the main body 1.

Further, the present invention is not limited to the first embodiment described above, but can be applied to the second embodiment shown in FIGS. 4 to 10, and the third embodiment shown in FIGS. 11 to 12. You can do as in the example.

That is, the second embodiment is different from the embodiment @1 in which the above-mentioned earth terminal is replaced with the injection part without removing it, and the second embodiment has a conventionally used water leakage detection cap and a connection to this cap. In order to make effective use of the connector, an example is shown in which the earth terminal is removed and replaced, and the details are as follows.

That is, as shown in FIG. 4, a fan-shaped sulin) 4 (7a) is provided along the circumferential direction of the opening edge as shown in FIG.
A plurality of insertion holes 40 are provided, and a disk-shaped storage chamber 41 is formed on the back surface of the side wall corresponding to the insertion holes 40. The inner diameter of the storage chamber 41 is 4)
(7a...Dimensions corresponding to the outer diameter between
An opening 4 corresponding to the 1tlI through hole 40 is provided at the bottom of the storage chamber 4).
2h is provided, and the inside and outside of the endoscope main body 1 are communicated from a storage chamber 41 having an insertion hole 40, an opening 42, etc., a ground terminal 43, a water leakage detection cap 44, and a common attachment part. 42. On the other hand, as for the ground terminal 43, as shown in FIG. 6, a mounting shaft 45 having an outer diameter corresponding to the inner diameter of the insertion hole 40 is integrally connected to the base of the ground terminal 43. A fan-shaped flange portion 46 as shown in FIG. 7 is provided protrudingly on the distal end shaft portion of the mounting shaft 45 in correspondence with the slit 40a, and these portions 46... A ring-shaped fixing plate 47 is movably engaged with the upper shaft portion of the ground terminal 43 to form a mounting portion 48 corresponding to the mounted portion 42. In addition,
The thickness of each collar portion 46 corresponds to the storage chamber 41. On the other hand, as the water leak detection cap 44, the eighth
As shown in the figure, at the base of the commercialized cap 49, a cap 4 with an outer diameter corresponding to the inner diameter of the insertion hole 40 and inside the cap 49 is provided.
Air injection passage in 9 4. A mounting shaft 51 is integrally provided with a passage 50 communicating with the shaft end and opening at the end of the shaft. A collar portion 52 . . . and a ring-shaped fixing plate 53 are provided on the mounting shaft 51 similarly to the ground terminal 43, and a mounting portion 54 corresponding to the mounted portion 42 is provided on the base 49.
It consists of Note that FIG. 6 shows the mounting structure of the parts 52, and FIG. 1O shows a socket 5 as a connecting tool corresponding to the cap 49.

When using the ground terminal 43, first insert the tip of the mounting shaft 45 into the insertion hole 40 with the flange 46 corresponding to the slit 40@...
The collar portion 46 is housed in the housing chamber 41. Next, the ground terminal 43 is rotated to guide each collar portion 46 to the outside of the part without the slit 40 and so on, so that the ground terminal 43 is not pulled out. Incidentally, the rotational operation of the rib portions 46 is regulated by the stone tongue and the collar portions 46, which are provided at predetermined positions, although not shown. Afterwards, attach the fixing plate 47 to the connector body 15.
When the flange portions 46 are tightened by rotating in the direction approaching the ground terminal 1', the ground terminal 1' becomes electrically connected to the ground a23 through the accommodation chamber 41, and a grounding function is formed.

In addition, when detecting water leakage, remove the ground terminal 43 from the attached part 4'2, and then attach the cap 49 to the attached part 42 in the same manner as when attaching the ground terminal 43 described above. and opening 42
The inside of the endoscope main body 1 and the inside of the mouthpiece 49 communicate with each other through □. If a socket 55 shown in FIG. 1θ is connected to this base 49, pressurized air necessary for detecting water leakage can be injected into the entire interior of the endoscope body 1 through the tube 55a.

However, such a connector main body 15 has a common mounting part 42, and mounting parts 48 and 54 corresponding to the mounting part 42 are formed on the ground terminal 43° and the cap 49 side, respectively, so that compatibility by attachment and detachment can be achieved. Even if the replacement means replaces the cap, the same effects as in the first embodiment described above can be achieved.

Further, the third embodiment is a modification of the second embodiment described above,
As shown in FIG. 11, a housing chamber 61 with a female threaded portion 60 formed on the inner peripheral surface is provided in the connector main body 15 as a mounting portion 42, and a ground terminal 43 and an air injection Q-Pro 2m are installed. A mounting shaft 64 having a male thread 63 corresponding to the accommodation chamber 61 is provided on each of the caps 62 to be directly connected, as in the second embodiment.
A fixing plate 47 that advances and retreats with a screw opposite to the male screw 63, that is, a so-called reverse screw, is provided on the upper side of the mounting portion 4.
8.54, after screwing the ground terminal 430 and the mounting shaft 64 into the housing chamber 61, the fixing plate 47 is rotated in the direction approaching the connector body 15. By tightening the mounting shaft 64,
The earth terminal 43 or the base 62 can be replaced and attached as desired. That is, due to the compatibility of the earth terminal 43 and the base 62, the shear earth terminal 43
It can be replaced with a cap 62 for detecting water leakage.

Note that the second
Components that are the same as those in the embodiment are given the same reference numerals, and their explanations are omitted.

As explained above, according to the present invention, the earth terminal, which is originally used for grounding, can be replaced with an injection part that can inject the air necessary for detecting water leaks, which can easily become a hindrance. A cap dedicated to detection can be removed from the endoscope body.

[Brief explanation of the drawing]

1 to 3 show a first embodiment of this invention,
Fig. 1 is a perspective view of the endoscope, Fig. 2 is a sectional view showing the structure of the replacement means, Fig. 3 is a sectional view showing the structure of the socket for leakage detection, and Figs. 4 to 10 are the invention. 4 is a sectional view showing the structure on the connector side, FIG. 5 is a sectional view taken along the line V to V in FIG. 4, and FIG. 6 is a sectional view showing the structure on the ground terminal side. 7 is a plan view showing the flange, FIG. 8 is a sectional view showing the structure on the side of the leakage detection connector, and FIG. 9 is a plan view showing the tail part. 1st'
0IEl is a cross-sectional view showing the air injection socket connected to the leakage detection connector, FIGS. 11 and 12 show the third embodiment of the present invention, and FIG. 11 shows the structure of the connector side. Fig. 12 is a sectional view showing the leakage detection connector 1...endoscope body, 16 93''-...nurse terminal, 19m, 2
7, 42. 48. 54... Cylinder mechanism, abutment part, attached part, attachment part (replacement means) □ Applicant's agent Patent attorney Takeshi Suzue. Hiko Figure 6 Figure 7, ' □ Jl/E8'll 51 54 * Is 2-43-2 Hatagaya, Shibuya-ku, Tokyo Lymphus Optical Industry Co., Ltd. 0 Author: Akifumi Ishikawa 2-chome, Hatagaya, Shibuya-ku, Tokyo No. 43, No. 2, Lymphus Optical Industry Co., Ltd., Commissioner of the Patent Office, Kazuo Wakasugi, 1, Indication of the case, Patent Application No. 1987-119976, 2, Name of the invention, Endoscope 3, Person making the amendment, Relationship with the case, Patent Applicant name (037) Olympus Optical 2-Nigyo Co., Ltd. 4, Agent 5, Voluntary amendment 6, Specification subject to amendment 7, Specification of contents of amendment (page 2, line 19) "..."・The phrase ``Things that put pressure on you...'' should be changed to ``・
・I corrected myself by saying, ``Anything that puts pressure on you is a song...''

Claims (1)

[Claims] 1. An endoscope, characterized in that a ground terminal provided on the endoscope body is provided with a replacement means for replacing the ground terminal with a base for water leakage detection that communicates with the inside of the endoscope body.