JPH0417122Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an endoscope, and particularly to the structure of a connecting portion between the main body operating portion and the universal cord.

[Prior Art] An endoscope has an insertion section that is inserted into a body cavity or the like connected to the main body operation section, and the insertion section is inserted into a predetermined observation target area to perform examinations and diagnosis. It is used to perform simple treatments, etc., and a light guide is used to illuminate the area to be observed. This light guide has one end facing the observation window formed at the tip of the insertion section, and is guided from the insertion section into the main body operation section, and the other end is connected to the light source device via a universal cord connected to the main body operation section. It is becoming connected.

Therefore, FIG. 3 shows a connection between the main body operation section and the universal cord according to the prior art. As is clear from the figure, an opening 3 for light guide insertion is formed in the bottom surface 2a of the housing 2 of the main body operation section 1, and a bolt or the like is formed on the inner surface of the bottom surface 2a of the housing 2 in the opening 3. A guide pipe 5 constituting a connecting member supported by a mounting plate 4 fixed to the housing 2 is inserted through the guide pipe 5, and a retainer ring 6 is screwed onto the guide pipe 5 so as to be fixed to the housing 2. It's summery. The guide pipe 5 is connected to the tip of a universal cord 8 through which the light guide 7 and the like are inserted.

Therefore, when operating the endoscope, the main body operating section 1 is grasped with one hand.
In order to prevent the universal cord 8 from interfering with operation when the main body operating section 1 is gripped, the universal cord 8 is inserted from the end of the main body operating section 1 opposite to the side where the angle knob 9 is attached. They are connected at an angle so that they face diagonally downward. For this reason, the guide pipe 5 is also attached obliquely to the main body operation section 1.

[Problems to be solved by the invention] By the way, as mentioned above, the mounting plate 4 supporting the guide pipe 5 has to be bent according to the angle of the connecting part of the universal cord 8 to the main body operation part 1. The drawback is that the processing is troublesome. In addition, when assembling this universal cord 8 to the main body operation part 1, when the presser ring 6 is screwed in, a rotational force is applied to the guide pipe 5 through which the light guide 7 etc. is inserted, so that the universal Since twisting force is applied to the light guide 7 provided in the cord 8, and there is a risk of wire breakage, etc., it is necessary to separately prevent rotation, which also has the disadvantage that it is troublesome to assemble.

The present invention has been made in view of the above points, and its purpose is to provide a simple structure for connecting the main body operation section and the universal cord.
To provide an endoscope that can be easily assembled.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention includes a first connecting member that is provided between the main body operation section and the universal cord and through which the light guide or the like is inserted. The housing is formed of a guide part and a second guide part connected at a predetermined angle with respect to the first guide part, and an opening is provided in the lower part of the housing to pass through the housing in a vertical direction. The first guide part is passed through the opening, and the end face of the second guide part inclined with respect to the axis of the first guide part is in contact with the lower surface of the housing. This is its characteristic.

[Function] By configuring as described above, it becomes possible to attach the first guide part by inserting it in a direction perpendicular to the wall surface of the housing of the main body operation part. There is no need to bend the mounting plate for mounting the first guide part. Further, when the presser ring is screwed together to fix the first guide part to the mounting plate, a rotational force is applied to the first guide part, but the The end face of the second guide part has a predetermined angle with respect to the direction perpendicular to the axis of the first guide part, and the end face of the second guide part is aligned with the axis of rotation when the presser ring is screwed. On the other hand, since the connecting member contacts the outer surface of the housing in an inclined state, the connecting member does not rotate unnecessarily, and the light guide 7 can be protected.

[Example] Hereinafter, an example of the present invention will be described in detail based on the ground.

First, in FIG. 2, reference numeral 10 indicates a main body operating section of an endoscope, and an insertion section 11 that is inserted into a body cavity or the like is connected to the distal end of the main body operating section 10. The main body operation section 1 also includes a universal cord 1 connected to a light source device (not shown).
2 are now connected. Here, in this endoscope, the main body operation section 10 is grasped with one hand,
It is designed to be operated while operating the angle knob 13 with the other hand, and in order to prevent it from getting in the way of the gripping hand, the part of the universal cord 12 that connects to the main body operation part 10 is positioned diagonally downward. It's starting to turn.

Therefore, FIG. 1 shows the configuration of the connecting portion between the universal cord 12 and the main body operation section 10. In the same figure, reference numeral 20 indicates a connecting member, and the connecting member 20 is composed of a first guide pipe 21 and a second guide pipe 22 each having an insertion passage for inserting the light guide 14 or the like therein. 1
The guide pipe 21 is connected to the second guide pipe 22 by screwing it into the second guide pipe 22. Here, these first and second guide pipes 21 and 22 are connected to each other with an angle θ, and for this reason, the female threaded portion of the second guide pipe 22 is aligned with its axis. It is designed to be formed in a direction shifted by an angle θ with respect to the direction shown in FIG. Also, the first guide pipe 21 of the second guide pipe 22
The end surface 22a on the side connected to the first guide pipe 21 is inclined at an angle θ with respect to a plane perpendicular to the axis of the first guide pipe 21.

Then, connect the above-mentioned connecting member 20 to the main body operation section 1.
0, the housing 10a has a first
an opening 23 for inserting the guide pipe 21 of the
A mounting plate 24 for fixing the first guide pipe 21 is fixedly provided in the housing 10a, and the first guide pipe 21 is inserted through the mounting plate 24. An insertion hole 24a is provided for the purpose. Here, this first
The second guide pipe 21 is inserted vertically into the main body operating section 10, while the second guide pipe 22 is inserted through the angle knob 13.
In order to extend diagonally downward toward the side opposite to the mounting side of the housing 10a, the outer surface of the housing 10a is connected to the end surface 22a of the second guide pipe 22 described above.
The end face 22a of the second guide pipe 22 is brought into contact with the inclined wall 25 corresponding to the inclination of the second guide pipe 22. And the first
Insert the second guide pipe 21 into the main body operating section 10 from the opening of the housing 10a through the insertion hole 24a of the mounting plate 24, with the end surface 22a of the second guide pipe 22 in contact with the inclined wall 25. , 1st
By screwing the retaining ring 26 into the tip of the second guide pipe 21, the connecting member 20 is fixed in a connected state to the main body operating section 10, and in this state, the connecting member 20 is fixed to the second guide pipe 22. , the connecting portion at the tip of the universal cord 12 is fitted.

By configuring the connection member 20 as described above, the light guide 14 and other members are inserted into the first and second guide pipes 21 and 22 constituting the connection member 20, and the main body Operation unit 1
0 through the opening 23 provided in the housing 10a and into the insertion hole 24a formed in the mounting plate 24,
The end surface 22a of the second guide pipe 22 is connected to the inclined wall 2
5, and in this state, the first guide pipe 2
A retainer ring 26 is screwed onto the tip of the second guide pipe 22, and the mounting plate 24 and the housing 10a are sandwiched and fixed between the retainer ring 26 and the second guide pipe 22. Thereafter, by fitting the tip of the universal cord 12 into the second guide pipe 22, the universal cord 12 can be connected to the main body operating section 10.

Since the first guide pipe 21 is inserted vertically into the main body operation section 10, the connecting member 20 can be easily operated on the main body without bending the mounting plate 24. It can now be attached to the section 10. Moreover, when attaching this connecting member 20, the presser ring 2
6 to the first guide pipe 21, a rotational force is applied to the connecting member 20 when the retaining ring 26 is screwed into the first guide pipe 21. The second
The end face 22a of the guide pipe 22 of the housing 1
Since it is in contact with the inclined wall 25 of 0a, this second
The joint between the guide pipe 22 and the inclined wall 25 exhibits a rotation prevention function, and there is no risk of twisting force being applied to the light guide 14 and causing disconnection.

In addition, in the above-mentioned embodiment, a structure was shown in which the connecting member is integrated by using the first and second guide pipes and screwing them together, but it is also possible to fix them by means such as welding. Alternatively, the first and second guide portions may be integrally formed.

[Effects of the invention] As explained above, according to the invention, the connecting member is connected to the first guide part and the second guide part which is at a predetermined angle with respect to the first guide part. and a second guide having an opening extending vertically through the lower part of the housing, the first guide portion passing through the opening, and the second guide being inclined with respect to the first guide pipe. Since the structure is such that the end surface of the connecting member is in contact with the bottom surface of the housing, there is no need to bend or bend the mounting plate used to secure the connecting member to the main body operating section. When the connecting member is fastened with a holding ring, it is possible to reliably prevent the connecting member from rotating unnecessarily, which is advantageous from the viewpoint of protecting the light guide.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of the present invention, with Figure 1 being an explanatory diagram of the configuration of the connecting part between the main body operating section and the universal cord, and Figure 2 showing the overall appearance of the main body operating section. Figures 3 and 3 are explanatory diagrams of the configuration of a connecting portion between a main body operating section and a universal cord in the prior art. 10...Main operation unit, 10a...Housing,
12...Universal cord, 14...Angle knob, 20...Connection member, 21...First guide pipe, 22...Second guide pipe, 22a...
...End face, 23...Opening, 24...Mounting plate, 24a
...insertion hole, 25...slanted wall, 26...presser ring.

Claims (1)

[Scope of utility model registration request] In an endoscope in which a universal cord for connecting a light guide to a light source device is connected to a main body operating section, a connection provided between the main body operating section and the universal cord for inserting a light guide, etc. a member with a first guide portion;
a second guide part that is connected to the guide part at a predetermined angle with respect to the guide part, and an opening that passes through the housing in a vertical direction is provided in the lower part of the housing,
The first guide part is passed through the opening, and the end face of the second guide part, which is inclined with respect to the axis of the first guide part, is mounted in such a way that it comes into contact with the lower surface of the housing. An endoscope featuring: