JPH046724Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention facilitates the length adjustment of the operating wire for controlling the angle of the tip of the insertion section in endoscopes used for medical and industrial purposes. The present invention relates to an angle operation section of an endoscope that allows the angle operation to be performed.

[Prior Art] As shown in FIG. 4, an endoscope is constructed by connecting an insertion section 2 to an operation section main body 1, and inserts the insertion section 2 into a body cavity or the like in a human body. ,
The distal end portion 2a is oriented in a desired direction to enable observation, inspection, treatment, etc. of the affected area. The distal end 2a has an angled portion that can be bent in any direction in order to orient the observation window and the treatment instrument lead-out section provided at the distal end in a desired direction when the insertion section 2 is inserted into the body cavity. 2b are arranged in series.

In order to operate the angle section 2b up and down, left and right, an angle operation knob 3 is provided on the operation section main body 1, as shown in FIG. A shaft 4 that can be rotated when moving is connected, and the shaft 4
extends into the main body 1 of the operating section, a drum 5 is connected to the tip thereof, and two operating wires 6, 6 for vertical angle operation and left/right angle operation are wound around the drum 5. I have to. Then, the tip of each operating wire 6 is connected to the insertion section 2 described above.
It is fixed between the angle part 2b and the tip part 2a, and the angle operation can be performed by pushing and pulling the operation wire 6.

Here, in order to perform the above-mentioned angle operation smoothly, the operating wire 6 must be attached with a certain tension. For this,
As shown in FIG. 6, the operating wire 6 is provided with a sleeve 7 for adjusting its length, and by screwing an adjusting screw 8 inserted into the sleeve 7 in and out as appropriate, the length of the operating wire 6 can be adjusted. The length of the operating wire 6 can be adjusted. Further, the sleeve 7 functions as a guide to enable stable operation of the operating wire 6. For this purpose, the outer shape of the sleeve 7 is made square, and the outer shape of the sleeve 7 is made into a rectangular shape. A partition plate 9 is attached inside, and a guide member 10 for guiding the sleeve 7 is provided on the partition plate 9.

[Problems to be solved by the invention] By the way, in the prior art described above, the sleeve 7 is attached to the angle operation knob 3 side of the partition plate 9, and therefore the length of the operation wire 6 is The angle adjustment must be performed by opening the side on which the angle operation knob 3 is attached. For this reason, it is necessary to disassemble the angle operation knob 3 every time the length of the operation wire 6 is adjusted, and disassembling the angle operation knob 3 is difficult because the part where the angle operation knob 3 is attached must be kept air-liquid tight. However, there is a drawback that the length adjustment work of the operating wire 6 is troublesome and the workability is extremely poor.

Therefore, as shown in FIG. 7, the shaft 12 of the angle operation knob 11 is passed through the partition plate 13 and a drum 14 is disposed on the other side, and the operation wire 15 wound around the drum 14 and the It is conceivable that the guide member 17 of the adjustment sleeve 16 attached to the operation wire 15 is also provided on the side of the partition plate 13 opposite to the side on which the angle operation knob 11 is attached. If such a configuration is adopted, the length of the operating wire 15 can be adjusted from the side opposite to the attachment part of the angle operating knob 11, which is convenient. The shaft 12 must be formed to have almost the entire length within the operating section main body 1, and not only does the shaft 12 become an obstacle to the arrangement of other built-in items such as an image guide, but also the weight of the operating section main body 1 increases. Furthermore, there is a problem that the operability becomes worse. In addition to what is shown in Figure 7,
Including the one shown in the figures, if a partition plate is provided on the operating section main body, there is also a problem in that the arrangement position of the air/water supply valve mechanism mounted on the operating section main body is severely restricted.

The present invention was developed in view of the above points, and its purpose is to provide an internal view with a simple configuration, a small number of parts, and the ability to easily adjust the length of the operating wire. The purpose of the present invention is to provide a mirror angle operation part.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention provides a mechanism in which the shaft rotated by the angle operation knob of the angle operation mechanism is attached to each of the left and right side covers constituting the main body casing. The shaft is rotatably supported by the side cover on one side, the shaft extends into the main body casing, and a drum is attached to the tip of the drum around which the operating wire is wound. The present invention is characterized in that a guide portion for guiding a sleeve for adjusting the length of the operating wire is formed in the device.

[Function] The guide part that guides the sleeve for adjusting the length of the operating wire is attached directly to the side cover of the main body casing, and the drum that constitutes the angle operation mechanism is attached to one side cover of the main body casing via the shaft. Because it is configured to be rotatably supported,
It is no longer necessary to provide a partition plate inside the main body casing, and for this reason, the length of the operating wire can be easily adjusted using the sleeve by removing the side cover on the side where the angle operating knob is not provided. . Moreover, by removing the partition plate from inside the main body casing, the number of parts is reduced, the structure is simplified, the weight of the operating unit main body can be reduced, and the valve mechanism for air and water supply can be arranged. The degree of freedom increases.

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

As shown in FIG. 3, the operating section main body 20 has a main body casing 21 consisting of a central frame 21a and left and right side covers 21b and 21c detachably connected to the frame 21a. An angle operation knob 22 is attached to the main body casing 21 on the side cover 21b side thereof. A shaft 23 is connected to the angle operation knob 22, and the shaft 23 is inserted into the shaft insertion portion 2 formed in the side cover 21b.
4 into the main casing 21, and a drum 25 is connected to the distal end thereof.

As shown in FIG. 1, the drum 25 is provided with two operating wires 26 wound around it, one for vertical angle operation and one for left/right angle operation, and a sleeve 27 is attached to each of the operating wires 26. There is no particular difference from the prior art described above in that the length can be adjusted.

However, in order to guide the sleeve 27, no member such as a partition plate is provided inside the main body casing 21, but a guide portion 28 is provided on the inner surface of the side cover 21b. As shown in FIG. 2, this guide portion 28 includes a protrusion 29 formed on the side cover 21b in the direction in which the operating wire 26 extends.
, a guide plate 30 connected to the protrusion 29, and a cover plate 31 formed in a U-shape.
It is becoming fixed at 9. These protrusions 2
9. A passage 33 is formed by the guide plate 30 and the cover plate 31 to guide the sleeve 27 in the push/pull operation direction of the operation wire 26.

The present embodiment is constructed as described above, and the guide portion 28 is provided directly on the side cover 21b, and members such as partition plates are not provided inside the main body casing 21 as in the prior art described above. For this purpose, the side cover 2 on the side of the main body casing 21 where the angle operation knob 22 is not attached is
By removing 1c and removing and attaching screws 32, the sleeve 27 can be taken out.
The length of the operating wire 26 can be adjusted very easily.

Moreover, as mentioned above, the main body casing 21
Since there are no members or the like to partition the inside of the main body casing 21, the inside of the main casing 21 can be used widely, and the arrangement of the valve mechanism for air and water supply, as shown by the dashed line in FIG. Since a sufficient installation space can be secured and the number of parts is reduced, the operation section main body can be easily assembled and its weight can be reduced.

[Effects of the invention] As detailed above, according to the invention, the guide section provided for guiding the operating wire is directly attached to the inner surface of the side cover on the side where the angle operation knob is installed in the main body casing, and By rotatably supporting the shaft that constitutes the operating mechanism and the drum attached to the tip of this shaft on one side cover of the main body casing, we have achieved a structure that eliminates the need for a partition plate. It is simple and requires fewer parts, and by removing the side cover on the opposite side from the side cover with the guide section,
This provides various effects such as being able to easily adjust the length of the operating wire.

[Brief explanation of the drawing]

Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is an explanatory diagram of the configuration of the angle operation section, Figure 2 is a sectional view of the guide section, and Figure 3 is an exploded perspective view of the main body casing. Figure 4 is an overall configuration diagram of the endoscope.
FIG. 5 is an explanatory diagram of the configuration of the angle operation section of the prior art, FIG. 6 is an exploded perspective view of the sleeve, and FIG. 7 is an explanatory diagram of the configuration of the angle operation section showing a modification of the prior art. 20... Operating unit main body, 21... Main body casing, 21a... Frame, 21b, 21c... Side cover, 22... Angle operating knob, 25... Drum, 26... Operating wire, 27... Sleeve ,
28... Guide portion, 29... Projection, 30... Guide plate, 31... Cover plate, 33... Passage.

Claims (1)

[Scope of utility model registration request] An operating section main body including a main body casing formed by removably attaching side covers to the left and right sides of a central frame, an insertion section connected to the operating section main body, and a tip of the insertion section. In the angle operating section of an endoscope, in which an angle mechanism for operating an angle section formed on a side is attached to the main body operating section, a shaft rotated by an angle operating knob of the angle operating mechanism is attached to each side of the endoscope. One of the side covers is rotatably supported, the shaft extends into the main body casing, and a drum is attached to the tip of the drum around which the operating wire is wound. An angle operation section for an endoscope, characterized in that a guide section for guiding a sleeve for adjusting the length of the operation wire is formed on an inner surface of a side cover.