JPH0984757A - Treatment tool standing device of endoscope - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the operability of a standing lever satisfactory, and prevent an angle operation member from being unnecessarily moved in the operation of the standing lever or the standing lever from being moved in the operation of the angle operation member by curving the standing lever so as to be turned round on the lower surface side of a body operation part. SOLUTION: A standing lever 20 has a connecting part 20a extended in the direction orthogonal to a rotating shaft, and a cured part 20b extended therefrom and curved in a position inside from the finger touch part 11a of an angle nob 11. The bent part 20b is turned round to 8 position lower than the lower surface of a body operation part, a finger touch part 21 is connected thereto in a position having a prescribed space from the lower surface of the body operation part so as to be parallel to this surface, and the finger touch part 21 is extended to a position near the opposite side surface of the body operation part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope in which a treatment tool such as forceps is led out from a side surface of a distal end portion of an insertion portion, such as a side-view endoscope. The present invention relates to a treatment instrument upright device for remotely operating a treatment instrument upright member for controlling a lead-out direction from a main body operation unit.

[0002]

2. Description of the Related Art Generally, there are endoscopes of a direct-viewing type, a side-viewing type, and a perspective type according to the direction of the observation visual field. If necessary, forceps or other treatment tool can be inserted in order to carry out a treatment or a procedure of collecting cells. For this purpose, a treatment instrument insertion channel is provided, and the treatment instrument is led out from the treatment instrument insertion channel. However, in order to operate the treatment instrument smoothly and safely, the derivation site of the treatment instrument is within the range of the observation visual field. Must be located. Therefore, the derivation direction of the treatment instrument depends on the direction of the observation visual field, and in the side-view endoscope having the observation visual field in the direction orthogonal to the axis of the insertion section, the treatment instrument derivation section also has the insertion section. It has an opening on the side of the tip. Since the treatment instrument insertion channel extends in the axial direction of the insertion portion,
At the treatment instrument lead-out portion, the direction of the treatment instrument must be changed so as to be bent at about 90 ° or more. For this reason, the treatment instrument lead-out portion is provided with a treatment instrument standing member.

FIG. 1 shows an example of the configuration of a standing operation mechanism for a treatment tool standing member. In the figure, reference numeral 1 is a main body operation portion, 2 is an insertion portion, and a treatment instrument lead-out portion 2a is formed on the side surface of the distal end portion of the insertion portion 2. To derive in the direction of
A standing stand 3 as a treatment tool standing member is provided. The upright base 3 is rotatable in the up-down direction (arrow A direction) about the upright shaft 4, and in order to rotate the upright base 3, the tip of the operation wire 5 is connected to the upper end of the upright base 3. To be done. The operation wire 5 is inserted into a flexible sleeve 6 in the insertion portion 2, and an upright lever 7 is provided inside the main body operation portion 1, and the upright lever 7 is rotated. The movable shaft 8 can be rotated in the direction of arrow B. The other end of the operating wire 5 is connected to the tip of the standing lever 7. The other end of the standing lever 7 is led to the outside of the main body operation unit 1 to form a finger contact unit 9 that is operated by the operator's fingers.

In order to raise the stand 3 from the state shown in the figure around the stand shaft 4, the finger contact portion 9 of the stand lever 7 is operated to rotate the stand lever 7 in the direction of arrow C to operate it. Try to pull the wire 5. As a result, the upright table 3 rotates about the upright shaft 4 and stands up as shown by the imaginary line in the figure, and the treatment tool can be aimed at the target such as the affected area.

As is well known, the insertion portion 2 of the endoscope is composed of a flexible portion, an angle portion, and a tip portion main body in order from the side of continuous connection to the main body operation portion 1. The angle portion is bent by remote control from the main body operation portion 1, and an angle operation member having an angle knob is provided to bend the angle portion. The angle knob that constitutes the angle operation member rotates the pulley, and therefore the angle knob and the pulley are connected by a rotation shaft. The raising lever is also connected to the turning shaft 8 in the same manner. Therefore, if the turning shaft 8 of the raising lever 7 is provided coaxially with the turning shaft of the angle operation member, the structure of the main body operation unit 1 is simplified. Can be converted.

Therefore, FIGS. 2 and 3 show the erection lever 7 and the angle operating member provided coaxially. In the figure, 11 is an angle knob for vertically bending the angle portion, 12 is an angle knob for vertically bending the angle portion, and 13 and 14 are the angle knob 1 respectively.
1 and 12 is a lock member that locks the angle portion in a curved state to a desired degree. Angle knobs 11, 1
The finger rests 11a and 12a, which are provided with concave and convex portions having a non-slip function at six places, are provided on the second portion 2, respectively. Each operating means constituting these angle operating members,
A rotation shaft 8 of a standing lever 7 which is connected to a shaft of the main body operating portion 2 and which projects from the side surface of the casing and which is an operating means of the standing operating mechanism of the treatment instrument is also provided coaxially with this shaft. Therefore,
It is formed by a triple shaft, but the outermost part is a rotating shaft 8 to which the standing lever 7 is connected, and the angle knob 1 is attached to the inner shaft.
1 and its lock member 13 and the angle knob 12 and its lock member 14 are connected to the innermost shaft. For this reason, each operating means is
The standing lever 7, the lock member 13, the angle knob 11, the angle knob 12, and the lock member 14 are arranged in this order.

The angle operation member and each operation means of the upright operation mechanism of the treatment instrument configured as described above are manually operated, and in consideration of their operability, the lock member 14 located on the outermost side is used. Has the smallest diameter, and the diameter increases in the order of the angle knob 12 and the angle knob 11. The lock members 13 and 14 are the angle knobs 11 and 1, respectively.
Since it is for locking the angle portion in a curved state to a desired degree by the operation of 2, the lock member 13,
When operating the 14, always use the angle knob 11,
12 is in the operating state. Further, when operating the standing lever 7, the treatment instrument is inserted through the treatment instrument insertion channel. In this way, when operating the angle knobs 11 and 12 or operating the standing lever 7, it is necessary to operate with both hands. For this purpose, the angle knob 11,
12 and the standing lever 7 can also be operated by the fingers of the hand holding the main body operation unit 2. Moreover, angle knob 1
Since a considerable operating force is required when operating the levers 1 and 12 and the standing lever 7, these operating means are operated by the thumb.

[0008]

By the way, considering the operability of the angle knobs 11 and 12 and the upright lever 7, the angle knob 12 having the smallest diameter can be operated by the thumb. The size of the contact portion 12a cannot be made too small. Also, the standing lever 7
Is projected toward the lower surface of the main body operating portion 1, but if the length of the projection is increased, it is difficult for the thumb to reach the finger contact portion 9 and the operability is deteriorated. further,
If the operating means are separated from each other in the axial direction, the operability of the angle knob 12, which is also located on the outermost side, deteriorates. Further, when these operating means are not operated by the thumb, the lower surface of the main body operating section 1 must be opened so that the thumb rests on the lower surface of the main body operating section 1, so that the finger contact section can be opened. The length dimension of 9 cannot be too long.

From the above, as shown in FIG. 2, when the standing lever 7 is coaxial in addition to the angle knobs 11 and 12, the standing lever 7 and the angle knob are shortened in order to shorten the length in the axial direction. The step between 11 and 11 is considerably small. Therefore, for example, when trying to operate the upright lever 7, when the thumb is placed on the finger rest 9 of the upright lever 7, the finger rest 11a of the angle knob 11 is pushed.
Therefore, the angle knob 11 may also rotate during the operation of raising the upright base 3, and the angle portion may be bent. In addition, in order to perform the bending operation of the angle portion with the treatment tool pulled out,
Even when the angle knob 11 is operated, there is a problem that the thumb hooks on the finger contact portion 9 of the standing lever 7 and the angle portion bends, and at the same time, the direction of the treatment tool changes.

The present invention has been made in view of the above points, and it is an object of the present invention to improve the operability of a standing lever for performing a standing operation of a treatment instrument, and to perform an angle operation when performing the operation. It is to eliminate the need for a finger to reach the operating means of the member.

[0011]

In order to achieve the above-mentioned object, the present invention is for operating an angle operating wire for bending a distal end portion of an insertion portion of a standing lever for standing up a treatment instrument standing member. It is provided coaxially with the angle operation member of, and the standing lever is
At a position inside the finger contact position of the angle operation member, after being bent in a direction away from the angle operation member, the angle operation member is bent around the lower surface side of the main body operation portion, and the wraparound portion is used as a finger contact portion It is characterized by that.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The upright operation mechanism for a treatment instrument upright member in FIG. 1 shows an example thereof. In addition to this, for example, a pulley is attached to a rotary shaft connected to an upright lever. Alternatively, the operation wire may be connected to the pulley, or the rotation shaft may be provided with a pinion, and the operation wire may be connected to a rack to push or pull the operation wire. In any case, the erection lever is connected to the rotating shaft, and this rotating shaft is provided coaxially with the shaft connected to the pulley of the angle operating member, and is operated to rotate about this shaft. . When the surgeon grips the main body operation part, the thumb is generally positioned so as to be aligned with the bottom surface of the main body operation part. By wrapping around, it is extremely advantageous for the operation with the thumb.

In order to prevent a finger from being simultaneously caught on the upright lever and the angle knob of the angle operation member,
The finger rest of the stand-up lever protruding to the lower surface side of the main body operation unit should be separated from the finger rest of the angle knob. For this reason, the erection lever extends in a direction orthogonal to the rotation axis, but is bent in a direction away from the angle knob at a position inside the finger rest at the midpoint thereof.
As a result, the standing lever can be separated from the angle operating member, and when operating the standing lever, the angle operating member simultaneously operates, and when operating the angle operating member, the standing lever also operates. It never happens.

When the standing lever is bent obliquely, it can be separated from the angle operating member without difficulty. Then, it is possible to make the finger contact portion of the standing lever as long as possible to have a length dimension close to the width of the main body operation portion.
According to this structure, the finger rest portion of the standing lever can function as a finger rest portion for resting the thumb.
Of the hands that hold the main body operation unit, it is the little finger and the ring finger that apply the holding force, and the index finger is used to operate the air / water supply button, the suction button, and the like. The middle finger may perform a button operation, and can also hold the main body operation unit. When the thumb does not operate the above-mentioned operating means, a finger rest portion is required to stabilize the thumb. Normally, the standing lever does not have any special locking means,
The desired standing state is maintained by increasing the resistance during the operation. Therefore, there is no possibility that the stand moves unintentionally just by putting the thumb on the finger rest of the standing lever. Therefore, this finger rest can be used as a finger rest.

[0015]

EXAMPLE An example of the present invention will be described below with reference to FIG. In the present embodiment, the same or equivalent members as those of the above-described conventional technique are designated by the same reference numerals,
The description is omitted.

In the figure, reference numeral 20 denotes a standing lever,
The erection lever 20 extends in a direction orthogonal to the rotation axis of the erection lever 20 at a position closest to the casing of the main body operation portion 1 than the angle knob 11 forming the angle operation member is the same as that of the above-described prior art. Is the same as. The upright lever 20 has a connecting portion 20a extending in a direction orthogonal to the rotation axis, but the connecting portion 20a does not extend straight as it is, but a predetermined angle toward the main body operating portion 1 side on the way. The bent portion 20b is inclined. The transitional portion from the connecting portion 20a to the bent portion 20b is located inside the finger contact portion 11a of the angle knob 11, and the bent portion 20a.
It is made to wrap around to the position below the lower surface of the main body operation unit 1 by b. A finger contact portion 21 is connected to the bent portion 20b at a position spaced from the lower surface of the main body operation portion 1 by a predetermined distance so as to be parallel to the surface. The finger contact portion 21 extends to a position near the opposite side surface of the main body operation portion 1.

The present embodiment is constructed as described above, and by providing the bent portion 20b on the upright lever 20 in this manner, the finger contact portion 21 connected to the upright lever 20 has an angle knob. It can be separated from the finger contact portion 11a of 11 by a predetermined distance. As a result,
When a thumb is brought into contact with the finger rest 21 to operate the standing lever 20, the finger does not hang on the finger rest 11a of the angle knob 11, and the thumb rests on the finger rest 11a of the angle knob 11. Upright lever 2 when
There is no such thing as zero. Therefore, the standing lever 2
When operating the 0, the angle knob 11 turns excessively, and when the angle knob 11 is operated, the standing lever 20
It is possible to reliably prevent inconveniences such as movement of the. Here, the standing lever 20 uses a friction plate or the like in order to hold the standing table in a standing state at a predetermined angle, so that the resistance against its rotation is considerably increased. However, by enlarging the finger contact portion 21, the operation force of the thumb with respect to the standing lever 20 can be sufficiently exerted, and this operation can be performed smoothly and reliably.

It is not necessary to provide a special step or the like in the axial direction between the finger contact portion 21 of the upright lever 20 and the finger contact portion 11a of the angle knob 11, and the shape of the angle knob 11 is independent of the upright lever 20. , Angle knob 12
It can be set so that mutual operability is good.
In addition, the finger contact portion 21 of the standing lever 20 is the main body operation portion 1
Since it covers almost the entire width of the lower surface of the body, the finger rest portion 21 can function as a finger rest portion when the thumb of the hand holding the main body operating portion 1 does not need to operate. it can. Here, since the resistance against the operation of the standing lever 20 is set to be large to some extent, even if some force is applied to the finger contact portion 21 with the thumb in contact with the finger contact portion 21, The standing lever 20 does not operate. Then, the finger rest 21
Since the entire length of the main body operating portion 2 in the width direction is extended, the thumb can be reliably brought into contact with the main body operating portion 1 even if the holding position of the main body operating portion 1 is slightly displaced. Moreover, in order to rest the thumb while holding the main body operation unit 1,
It is possible to rest the fingers in a natural state by providing the finger rest portion at a position apart from the main body operation portion 1 on which the palm is touched to some extent.

[0019]

As described above, according to the present invention, the standing lever is bent at a position inside the finger contact position of the angle operating member in a direction away from the angle operating member, and then the main body operating portion is bent. Since it wraps around to the lower surface side, and this wrap-around part is the finger contact part, it is easy to operate this standing lever, and when operating this standing lever, the angle operating member moves too much, and the operation of the angle operating member At times, it is possible to reliably prevent the standing lever from moving.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view of a treatment tool standing mechanism in an endoscope.

FIG. 2 is a front view of a main body operation portion of the endoscope according to the related art.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a left side view of a main body operating portion of an endoscope showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body operation part 2 Insertion part 2a Treatment tool derivation part 3 Standing stand 5 Operation wire 11,12 Angle part 20 Standing lever 20a Connecting part 20b Bending part 21 Finger rest part

Claims (2)

[Claims] 1. A treatment tool standing member is provided at the tip of the insertion section, an operation wire is connected to the treatment tool standing member, the operation wire is extended into the main body operation section, and is connected to a standing lever. In an endoscope in which a treatment tool upright member is raised by operating a lever to control the direction of pulling out the treatment tool from the insertion section, for operating an angle operation wire that bends the distal end portion of the insertion section. The upright lever is connected to a rotary shaft provided coaxially with the angle operating member, and the upright lever is operated at a position inside the finger contact position of the angle operating member from a direction orthogonal to the rotary shaft. A treatment tool upright device for an endoscope, which is bent in a direction of separating from a member, and is bent around the lower surface side of the main body operation part, and the bent part is used as a finger contact part. 2. The finger contact portion of the upright lever is configured to extend to the vicinity of a surface of the main body operation portion on the side opposite to the extension side of the rotation shaft. The endoscopic treatment tool uprighting device.