JP2535665Y2 - Endoscope treatment instrument raising device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an endoscope which is provided in an endoscope or the like of a side-view type and controls a drawing direction from the endoscope by erecting a forceps or other treatment tool. The present invention relates to a treatment instrument raising device.

[0002]

2. Description of the Related Art Generally, in a side-view type endoscope, a treatment tool outlet for leading out a treatment tool such as a forceps is provided on a side surface at a distal end portion of an insertion portion together with an illumination window and an observation window. It is open. However, since the insertion portion is provided with the treatment instrument insertion channel in the axial direction, the treatment instrument inserted through the treatment instrument insertion channel is bent at almost 90 ° at the distal end, and the treatment instrument is inserted. It will be led out from the outlet. And, in order to be able to point this treatment instrument in a desired direction, a treatment instrument stand is provided, and by operating this treatment instrument stand, the treatment instrument is led out from the treatment instrument outlet. The treatment tool can be oriented in a desired direction.

An operating wire is connected to the treatment instrument stand so that the treatment instrument stand can be raised by remote control. By pushing and pulling the operation wire, the treatment instrument stand can be appropriately moved. The amount can be raised. The operation wire extends from the insertion section into the main body operation section, and is connected to an operation mechanism provided in the main body operation section. The operation mechanism section has a slider to which an operation wire is connected, and a guide member for sliding the slider, and operates an endoscope such as an operator outside the casing of the main body operation section. Is provided with an upright lever that can be rotated by a finger of a hand holding the main body operation unit of the endoscope with a hand, and the upright lever can be turned by a finger of the hand holding the main body operation unit with the hand. By doing so, the slider is moved along the guide member, and the operation wire is pushed and pulled.

[0004]

The upright lever is generally provided coaxially with an angle operating mechanism for bending the distal end of the insertion portion in a desired direction. In this angle operation mechanism, an angle drum is connected to a rotation shaft to which an angle knob is attached, and an angle operation wire is wound around the angle drum. A guide mechanism is provided to extend the angle operation wire straight from the angle drum. The guide mechanism is mounted on a mounting plate provided in the casing of the main body operation unit together with the operation mechanism for operating the treatment tool described above. Here, the guide mechanism for the angle operation has a fixed installation location in terms of its function, and must be arranged at a position in front of the angle drum. Therefore, it is necessary to provide the operating mechanism for erecting the treatment instrument at a position avoiding the guide mechanism. Conventionally, from the positional relationship of various members mounted inside the main body operation section, this operation mechanism section is close to the front position of the guide mechanism section of the angle operation wire, that is, close to the connecting section to the insertion section. Position.

As described above, when the operating mechanism of the operating wire for erecting the treatment instrument is mounted at a position in front of the main body operating portion, the length of the main body operating portion in the axial direction becomes longer. As a result, there is a disadvantage that the entire main body operation unit is increased in size and weight and the operability is deteriorated. In addition, an endoscope provided with a treatment instrument erecting mechanism (generally, a side-view type endoscope corresponds to this), and an endoscope not provided with a treatment instrument erecting mechanism (a direct-vision type endoscope) Is usually of this type), the length of the main body operation unit in the axial direction is different, and when operating the direct-view type endoscope and the side-view type endoscope, the operation is uncomfortable. There is also a problem such as that there may be a case.

[0006] The present invention has been made in view of the above points, and an object thereof is to mount an operation mechanism for raising a treatment instrument rationally without increasing the size of the main body operation section. It is an object of the present invention to provide an endoscope treatment instrument erecting device which can perform the above-mentioned.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention is directed to a hard tip portion, an angle portion,
And an insertion part consisting of a flexible part and a base end of the insertion part.
Main body operation section, and further provided inside the main body operation section.
Is arranged in the axial direction of the main body operation part, and divides the inside into two
Angled on one side of the mounting plate
Press the angle operation wire to angle the section.
An angle operating mechanism for pulling and pulling is provided.
A treatment tool upright base for raising the treatment tool at the hard end is provided.
Then, the operation wire connected to the treatment instrument stand is taken out as described above.
On the side opposite to the mounting part of the angle operation mechanism part of the mounting plate
Along the surface of the
This operation mechanism is connected to the operation mechanism
To one end of the interlocking member and bend the interlocking member halfway
This makes it possible to
Extend the mounting plate to the mounting side of the angle
Configuration to be connected to an upright lever that gives an operating force to the working mechanism
It is an its characterized in that the.

[0008]

Considering the internal structure of the main body operating portion, first, a mounting plate is mounted in the casing of the main body operating portion. Needless to say, this mounting plate is used for the angle in the angle operating mechanism. It is provided to support the guide mechanism of the drum and the operation wire. And
An angle operation mechanism is provided on one side of the mounting plate, and an air supply / water supply valve and a suction valve are mounted on the opposite side, and piping connected to the air supply / water supply valve and the suction valve is provided. Is provided. Furthermore, besides these, a light guide for transmitting illumination light,
An image guide (or a signal transmission cable in an electronic endoscope) for transmitting an image of a subject is provided.

The structure inside the main body operation section is as described above. However, since the operation mechanism for erecting the treatment tool must be directly mounted on the plate surface of the mounting plate, it is mounted without interfering with the angle operation mechanism. It is extremely difficult to secure space. However, the surface on the opposite side of the mounting plate is aside from the part where the air / water supply valve or the suction valve is attached, but the front side, that is, the part connected to the insertion part is a pipe, a light guide, and an image guide. Alternatively, there is only a flexible member, such as a signal cable, which does not need to be fixed to the mounting plate. Therefore, a space for mounting the above-described operation mechanism can be secured in this portion. By the way, the erecting lever is connected to a rotating shaft provided coaxially with the rotating shaft of the angle knob, and its position is a position opposite to the mounting position of the air / water supply valve or the suction valve and the mounting plate. It is in. For this reason, it is impossible to mount the interlocking member for transmitting the rotating power by passing the rotating shaft of the upright lever through the mounting plate. Then, the interlocking member is shifted to the side where the angle operating mechanism is provided so as to straddle the mounting plate, and is connected to the rotation shaft of the upright lever provided at this portion.

Thus, even if the endoscope is provided with the treatment instrument erecting device, it is possible to provide a main body operation section having substantially the same outer dimensions as an endoscope without such a mechanism.
Therefore, it is possible to reduce the size and weight of the main body operation unit, and it is possible to operate the endoscope having the treatment instrument erecting device in the same manner as the endoscope without it. It is possible to prevent the user from feeling uncomfortable in the operation.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. First, FIG. 1 shows a schematic configuration of the entire treatment instrument erecting device. In the drawings, reference numeral 1 denotes an endoscope. The endoscope 1 has a main body operation section 2 and an insertion section 3 connected to a distal end portion of the main body operation section 2 and a universal section at a lower portion thereof. The code 4 is provided continuously. The insertion portion 3 is mostly a flexible portion 3a from the side of the connecting portion to the main body operation portion 3, and an angle portion 3b is provided at a distal end portion of the flexible portion 3a.
A distal end hard portion 3c is connected to the distal end of 3b. An illumination window, an observation window, and the like are provided on the side surface of the distal end hard portion 3c, so that the endoscope is of a side-view type.

Reference numeral 10 denotes a treatment instrument erecting device. The treatment instrument erecting device 10 includes an erecting stand 11, an operation wire 12 connected to the erecting stand 11, an operation mechanism 13 of the operation wire 12, and an erecting lever.
It has 14 and. The erecting base 11 is connected to the pivot 11a so as to be able to erect, and by appropriately erecting the erecting base 11, the forceps or other treatment tools inserted through the treatment instrument insertion channel (not shown) are turned. , Tip hard part 3c
Can be led out from the treatment tool lead-out portion 5 formed on the side surface of the target device, and the aiming property for the affected part and the like can be improved. The operating wire 12 connected to the erecting base 11 is extended from the insertion section 3 into the main body operating section 2 so that the erecting operation of the erecting base 11 can be performed by remote control. 2 is connected to an operation mechanism 13 provided in the inside. The operation mechanism 13 includes a slider 17 slidably provided on a guide member 16, and the operation wire 12 is connected to the slider 17.
Further, an upright lever 14 provided for slidingly displacing the slider 17 is led out of the casing of the main body operation unit 2 so that an operator or the like operating the endoscope 1 can perform a rotating operation with fingers. I can do it. The upright lever 14 is connected to a pivot 18,
Reference numeral 18 is connected to a rotating disk 19. A pin 20 is erected on the rotating disk 19, and the pin 20 is set up.
Operating force of vertical lever 14 is transmitted to slider 17 of operating mechanism 13
Connecting lever 21 is connected to, the connection lever 21
Is connected to the slider 17.

With the above construction, when the upright lever 14 is operated, the rotating disk 19 is rotated and the connecting lever 21 is displaced, so that the slider 17 connected to the connecting lever 21 is guided. The operation wire 12 is slid along the member 16 to be pushed and pulled. As a result, the upright stand 11 to which the distal end of the operation wire 12 is attached rotates about the pivot shaft 11a, and stands up. It will be operated. In addition, since the angle of the upright of the upright stand 11 changes in accordance with the amount of operation of the upright lever 14, the treatment instrument drawn out of the treatment instrument outlet 5 along the upright stand 11 can be directed in a desired direction. .

As shown in FIGS. 2 to 4, the upright lever 14, which constitutes the operating mechanism 13 of the treatment instrument upright device 10, pushes the angle portion 3b of the insertion portion 3 in a desired direction. Angle knob for bending, so-called angle operation
30 together with the main unit operating unit 2.
Can be operated with the fingers of an operator who grips and operates. The rotation shaft 18 connected to the upright lever 14 is provided coaxially with the transmission shaft 31 of the angle knob 30 and is supported by the mounting plate 6 provided inside the main body operation unit 2. An angle operation wire 32 is wound around an angle drum (not shown) provided on the transmission shaft 31,
The angle operation wire 32 is guided by a guide member 33 mounted on the mounting plate 6.

By the way, inside the casing of the main body operation unit 2, two rooms on the left and right sides (a room on the lower side in FIG. 3 as a left room and an upper room as a right room) by the mounting plate 6 described above. Is formed. In each of the rooms, a portion where the casing is removed is shown in the drawing as a front portion (that is, a portion connected to the insertion portion 3), and a portion covered with the casing is shown as a rear portion in the drawing. Therefore, in each of these parts,
Let A be the rear side of the right chamber, B be the front side, C be the rear side of the left chamber, and D be the front side. First, an air / water supply valve 7 and a suction valve 8 are provided on the rear side A of the right chamber, so that there is almost no extra space. Therefore, the rotating disk 19 of the treatment instrument raising device 10 must be disposed on the rear side C of the left chamber together with the angle drum. However, since the guide member 33 of the angle operation wire 32 is mounted on the mounting plate 6 on the front side D of the left chamber, if the guide member 16 of the slider 17 is to be mounted on the mounting plate 6, It is necessary to make the mounting plate 6 large,
For this reason, the entire main body operation unit 2 is increased in size and weight. Therefore, looking at the front side B of the right chamber, as apparent from FIG. 4, the light guide 40 and the image guide 41 (signal cable in the case of an electronic endoscope), the air supply pipe 42 and Although the water supply pipe 43 is inserted, there is a relatively large space, and these members have flexibility. Moreover, nothing is mounted on the wall surface of the mounting plate 6 in this portion. From the above points, the guide member 16 is provided at the front side B of the right chamber. Thus, the guide member 16 can be mounted without making the mounting plate 6 particularly large.

As described above, since the rotating disk 19 is provided in the left chamber and the guide member 16 is provided in the right chamber, a space between the rotating disk 19 and the guide member 16 is provided. connecting lever 21 is provided, bent at its intermediate position, by bending to form a folded portion, the transition portion 21a across the mounting plate 6 is formed. In order to secure a space where the transition portion 21a straddles the mounting plate 6, the mounting plate 6 is formed with a notch 6a as shown in FIG. However, notch 6a like this
If the strength of the mounting plate 6 is reduced by forming the above, the protection plate 9 may be fixed to the mounting plate 6 to reinforce it.

[0017]

[Effect of the Invention] As described above, the present invention provides a treatment device.
Connect the operation wire connected to the stand to the
Control the main unit along the surface of the
Operation that is extended into the work area and attached to this mounting plate
To the operating mechanism, and connect one end of the interlocking member to this operating mechanism.
By connecting and linking this interlocking member
Angle operation of this mounting plate across the mounting plate
Extends to the mounting side of the mechanism to apply operating force to the operating mechanism.
The endoscope of the side view type provided with the treatment instrument erecting device has the same outer dimensions as the direct-view type endoscope not provided with such a treatment instrument erecting device. It can be formed as a main body operation section. Therefore, the side-viewing type endoscope does not become larger and heavier than the direct-viewing type endoscope, and in actual operation, both endoscopes should be operated with almost the same operation feeling. Therefore, various effects such as improvement in operability can be achieved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a treatment tool standing device.

FIG. 2 is a front view showing an internal structure of a main part of a main body operation unit of the endoscope.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a rear view of FIG. 2;

FIG. 5 is a view similar to FIG. 4, with the operating mechanism removed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Endoscope 2 Main body operation part 3 Insertion part 5 Treatment tool derivation part 10 Treatment tool erecting device 11 Erecting stand 12 Operation wire 13 Operation mechanism part 14 Erect lever 16 Guide member 17 Slider 18 Rotating shaft 19 Rotating disk 20 Pin 21 Connecting lever

Claims (1)

(57) [Scope of request for utility model registration] 1. A hard tip portion, an angle portion,
An insertion part consisting of a flexible part and a base connected to the insertion part
Main body operation section, and further provided inside the main body operation section.
Is arranged in the axial direction of the main body operation part, and divides the inside into two
Angled on one side of the mounting plate
Press the angle operation wire to angle the section.
Smell provided with an angle operation mechanism for pulling and pulling
And a treatment instrument for erecting the treatment instrument on the hard distal end portion.
An erecting stand is provided, and an operation wire connected to the treatment instrument erecting stand is provided.
Mounting part of the angle operating mechanism part of the mounting plate
Along the surface opposite to
Connected to the operation mechanism mounted on this mounting plate,
One end of the interlocking member is connected to the operation mechanism of
Bends in the middle to straddle the mounting plate
Extend to the mounting side of the angle operation mechanism of this mounting plate.
And an upright lever that provides operating force to the operating mechanism.
Instrument raising device of the endoscope being characterized in that a configuration in which binding.