JP3110819B2 - Endoscope operation section structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an operation section of an endoscope, and more particularly to a structure of an operation section for operating an erecting stand for erecting a treatment instrument led to a distal end portion.

[0002]

2. Description of the Related Art A CCD (Charge Cou) which is a solid-state image sensor is used.
An electronic endoscope having a pled Device) at its tip or an endoscope for observing only by optical means is well known. In this type of endoscope, not only the state inside the body to be observed is observed but also
Incisions, biopsies, collections, and other procedures are performed using various treatment tools such as forceps.

FIG. 5 shows the structure of a conventional side-view type endoscope. As shown in the drawing, a distal end portion 1 of an endoscope is connected to a bending portion 2, and the distal end portion 1 and the bending portion 2 are connected to each other. Wires 3a and 3b connected to the operation unit are attached near the connection with the unit 2. Therefore, by operating these wires 3a, 3b, etc., the distal end portion 1 can be bent up and down or left and right. Further, a forceps port 5 communicating with a treatment tool insertion channel (forceps channel) 4 provided in the bending portion 2 is formed in the distal end portion 1 so as to open to a side surface portion. The treatment instrument 6 inserted through the instrument is led out from the forceps port 5 on the side surface, and an observation window, an irradiation window, and the like (not shown) are provided on the side surface. Therefore, the side-viewing type endoscope can observe and treat a portion existing in a direction perpendicular to the insertion direction.

[0004] Further, an upright table 7 which rotates in the direction of the forceps port 5 is attached to the tip 1 by a shaft 8 as shown in the figure, and a wire 9 connected to an operation unit is connected to the upright table 7. Have been. Accordingly, the pulling operation of the wire 9 causes the upright table 7 to rotate, and as shown by the dashed line, the rotating upright table 7 causes the treatment tool 6 to be applied from the forceps port 5 to a predetermined site at a predetermined position. The treatment tool 6 performs various treatments in this standing state.

FIG. 6 shows the structure of the operation section of the endoscope. The bending section 2 and the tip section 1 are connected in the direction of the tip of the support section 10 shown in FIG. Part 1
1 is provided. The operating unit 11 includes a left and right angle knob 12 for bending the distal end 1 in the left and right direction, a left and right lock knob 13 for locking in a position where the distal end 1 is bent left and right, and the distal end 1 in the vertical direction by the wires 3a and 3b. Up / down angle knob 14 for bending operation, up / down lock knob 1 for locking at the position where bending operation is performed up and down
5, and an upright knob 16 for bending the wire 9 connected to the upright base 7 are provided. This standing knob 1
According to FIG. 6, the angle α can be rotated as shown in FIG. 6A, and the upright base 7 of FIG. 5 can be raised to a predetermined position by the rotation of the angle α.

[0006]

However, in the conventional endoscope operating section, the upright knob 16 is provided at the lowermost stage, and the operating section 11 itself must be operated with one hand. There is a limit to the height, and therefore the upright knob 16 rotates and hits the wall of the support portion 10, so that there is a problem that the rotation angle α of the upright knob 16 is limited. On the contrary, the rotation angle α of the upright knob 16 determines the operation range of the upright stand 7. However, conventionally, even if it is necessary to extend the operation range of the upright stand 7, it is difficult to respond to the need by expanding the operation range. This was not possible due to the limitation of the moving angle.

The upright knob 16 is operated by the thumb, and its finger contact surface 200 is located at substantially the same position in the turning radius as the upper and lower angle knobs 14 present in the upper stage, and is located on the turning surface. In contrast to this, there is a problem that it is difficult to perform a rotating operation because it is vertical. In the operation of the upright table 7, since the treatment tool 6 must be positioned at a fine portion to be treated while bending the treatment tool 6, a fine positioning adjustment is required also at the upright knob 16, and the rotation is required. There is a need for an operation unit structure that facilitates operation.

The present invention has been made in view of the above problems, and a first object of the present invention is to provide an endoscope operation section structure that can extend the rotation angle of an upright knob. A second object is to provide an endoscope operation unit structure that facilitates the turning operation of the upright knob.

[0009]

According to a first aspect of the present invention, there is provided an endoscope having an upright knob for operating an upright stand at a distal end thereof. put the rotation operation in the endoscope manipulating bending treatment instrument in a predetermined direction through a wire, to the upright knob
Cut the end of the operating section on the support side, and
First width (vertical width) that allows rotation without contacting the part
A finger contact surface portion, which is wider than the width of the first finger contact surface portion;
A second finger contact surface portion having a width (vertical width) in contact with the support portion
Is formed. The invention according to a second aspect is characterized in that the finger contact surface of the upright knob is inclined inward in the direction of the operation unit support.

[0010]

According to the above construction, the cut formed by the cut is provided .
The first finger contact surface of the upright knob does not contact the support
In, with the rotation region of the operation knob is extended, the first
1 Use both the other finger contact surface and the wide second finger contact surface
The operation with the thumb or the like is performed favorably .

Further, since the finger contact surface of the operation knob is inclined toward the rotation axis in the direction of the support portion, the thumb can be stably placed on the finger contact surface, and a treatment tool using a standing stand for a small portion can be provided. Bending operation becomes easy.

[0012]

1 and 2 show the configuration of an endoscope (electronic endoscope) operating section according to an embodiment. FIG. 1 (a) is a top view, and FIG. FIG. 1A is a diagram of FIG. 1A as viewed from below, and FIG. 2 is a diagram of FIG. 1A as viewed from left. As shown in the figure, the operation unit 11 of the support unit 10 is the same as in the related art.
In addition, a left and right angle knob 12 for bending the tip in the left and right direction, a right and left lock knob 13 for locking at the position where the bending operation is performed left and right, an up and down angle knob 14 for bending operation in the up and down direction, and a position where the up and down bending operation is performed. An upper / lower lock knob 15 for locking is provided. An upright knob 20 that bends a wire connected to the upright table is attached to a rotating body that is pivotally supported by the support unit 10 at the lowest stage, and a cut 21 is formed in the upright knob 20. The notch 21 has such a size that the upright knob 20 can bite into the upper part of the side surface of the support portion 10 and rotate when the upright knob 20 rotates and approaches the support portion 10. In the embodiment, FIG. As shown, it is formed only at one (left) end.

According to the upright knob 20, FIG.
Can be turned, and the upright knob 20 can be turned toward the support portion 10 by the length of the cut 21 as compared with the conventional case, and the turning angle can be extended accordingly. Can be. Note that, with the upright knob 20, FIG.
The cuts 22a, 22b can be formed at both ends as shown in FIG.
b can be arbitrarily selected according to the required rotation angle of the upright knob 20 (the required bending amount of the treatment tool).

In the embodiment, the upright knob 20 is
Upper and lower angle knob 14 attached to the upper stage
At a position smaller than the turning radius of
The finger contact surface 100 of the upright knob 20 is inclined inward (rotating axis) in the direction of the support portion 10. That is, as in the conventional case, the left and right angle knobs 12 and the up and down angle knobs 14 provided on the operation unit 11 are arranged so that the turning radius decreases toward the upper side in the figure.
01, while the upright knob 2 provided at the bottom
The zero finger contact surface 100 is inclined toward the lower side of the figure so that the turning radius becomes smaller. Left and right angle knobs 12
The upper and lower angle knobs 14 have a finger contact surface 201 which goes upward and inclines inward so as to be easily operated by the thumb or other fingers. But,
If the lowermost upright knob 20 has the same inclination, the turning radius of the upright knob 20, which is the third stage, becomes large, and it becomes difficult to return and operate. Therefore, in the present invention, the upright knob 2 is used.
The inclination of 0 is made opposite to that of the other left and right angle knobs 12 and the upper and lower angle knobs 14 so that the turning knob 20 can be easily rotated.

FIG. 4 shows an overall view of the endoscope. The endoscope includes a distal end portion 1, a bending portion 2, an insertion portion 24, a support portion 10 having an operation portion 11, and a cable 25. And a connector 26 for connection to an external device. A forceps insertion port 27 that communicates with the treatment tool insertion channel is provided at a front end of the support section 10, and the treatment tool 6 is inserted through the forceps insertion port 27. The operation unit 11 includes a camera shutter button 28 and a suction button 2.
9, an air / water button 30 and the like are provided.

The embodiment is constructed as described above. In the endoscope, a treatment instrument for performing various treatments is observed from the observation window through the treatment instrument insertion channel through the forceps insertion port 27 while observing the inside of the object to be observed. To be introduced into the forceps opening. In this case, the tip 1 is bent by the left and right angle knobs 12 and the up and down angle knobs 14, and the upright table is uprightly operated by the operation of the upright knobs 20. At this time, in the embodiment, since the notch 21 is formed in the upright knob 20, the upright knob 20 can be rotated in a wide range of the angle β as shown in FIG. Therefore, the upright knob 20
The amount of rotation of the upright table connected via a wire can be increased, and as a result, the bending angle of the treatment tool can be extended.

Also, since the finger contact surface 100 of the upright knob 20 is inclined inward toward the support portion 10, the thumb can satisfactorily contact the finger contact surface 100, and Easy to operate. In this case, the cut 21
When the finger is placed at the boundary of the above, there is an advantage that the fine operation of the upright knob 20 when the notch 21 approaches the support portion 10 can be further easily performed.

[0018]

As described above, according to the first aspect of the present invention, the end of the upright knob on the side of the support portion is cut, and this operation is performed.
The first width that enables rotation without contacting the working support
A wide second fingertip that contacts the finger contact surface and the support portion
As a result , a good operation with the thumb etc. is secured.
After that, the turning angle of the standing knob can be extended,
Therefore, it is possible to meet a demand for increasing the bending angle of the treatment tool.

According to the second aspect of the present invention, since the finger contact surface of the upright knob is inclined inward in the direction of the operation unit support section, the upright knob can be easily operated.
The fine operation facilitates the positioning of the treatment tool with respect to a fine site.

[Brief description of the drawings]

FIG. 1 is a diagram showing a structure of an operation section of an endoscope (electronic endoscope) according to an embodiment of the present invention, and FIG.
FIG. 2B is a view of FIG. 1A viewed from the lower side of the figure.

FIG. 2 is a view of the operation unit of FIG. 1A as viewed from the left side of the figure.

FIG. 3 is a diagram showing various configurations of the upright knob of the embodiment.

FIG. 4 is an overall view of the endoscope of the embodiment.

FIG. 5 is a cross-sectional view showing a distal end structure of a conventional endoscope.

FIG. 6 is a view showing the structure of a conventional operation unit, and FIG.
Is a top view of the operation unit, and FIG. 2B is a view of FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Tip part, 2 ... Bending part, 6 ... Treatment tool, 7
... Standing stand, 10 ... Support part, 11 ... Operation part, 1
2 ... left and right angle knobs, 14 ... up and down angle knobs, 16, 20 ... upright knobs, 21, 20a, 22b ... notches, 100, 200, 201 ... finger contact surfaces.

Claims (2)

(57) [Claims] An operation section of an endoscope includes an upright knob for operating an upright stand at a distal end, and an endoscope for bending a treatment tool in a predetermined direction via a wire by rotating the upright knob. In the mirror, cut off the support side end of the operating part with the upright knob.
And can rotate without touching the operation unit support.
The width of the first finger contact surface portion having a width of
Second finger pad having a large width and a width in contact with the supporting portion
An endoscope operation unit structure having a surface formed. 2. A method finger contact surface of the upright knob, on which is characterized in that is inclined inward at an operation portion support portion direction
The endoscope operation section structure according to claim 1 .