JP2004290591A - Bending operation device of endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bending operation device of an endoscope that can be simply operated by a single hand and is comfortable to handle by arranging two operating levers to bend a bending section side by side on the reverse face of an operating section at hand. <P>SOLUTION: The operating section 11 at hand has two operating levers 24 and 26 to bend the bending section 20. In the two operating levers 24 and 26, knobs 24A and 26A are arranged side by side on the reverse face of an operating section body 12. Locking levers 36 and 38 to lock the operating levers 24 and 26 are provided above the operating section body 12. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a bending operation device of an endoscope, and more particularly to a bending operation device of an endoscope provided with two operation levers for bending a bending portion in a hand operation portion.
[0002]
[Prior art]
A medical endoscope includes a hand operation unit and an insertion unit connected to the hand operation unit, and a bending portion is provided near a distal end of the insertion unit. The bending portion is bent up and down or left and right by rotating a pair of knobs provided on the hand operation portion.
[0003]
By the way, when using the endoscope, the surgeon inserts and removes the insertion section into and out of the body cavity with the right hand while holding the hand operation section of the endoscope with the left hand. For this reason, when taking the insertion section into and out of the body cavity, it is necessary to turn the pair of knobs while holding the hand operation section with the left hand to bend the bending section. However, it is very difficult to operate the pair of knobs with only the left hand holding the hand operation unit, and there is a problem that a skilled technique is required.
[0004]
Patent Literature 1 discloses a bending operation device in which a knob and a lever are provided in a hand operation unit. According to this bending operation device, the knob and the lever are arranged at positions that are easy to operate, and the bending operation can be performed with one hand.
[0005]
[Patent Document 1]
JP-A-62-32932
[Problems to be solved by the invention]
However, Patent Document 1 has a problem that operability is poor and delicate operation is difficult because a knob and a lever having different operational feelings are combined.
[0007]
The present invention has been made in view of such circumstances, and an object of the present invention is to provide a bending operation device for an endoscope that can be easily operated with one hand and has good operability.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided an endoscope bending operation device provided with two operation levers for operating a bending portion provided in an endoscope insertion portion in a hand operation portion in order to achieve the above object. The two operation levers are arranged side by side on the back of the hand operation unit.
[0009]
According to the first aspect of the present invention, since the two operation levers are arranged side by side on the back of the hand operation unit, the two operation levers can be operated with the thumb, and the operability is good. According to the first aspect of the present invention, the lever with the largest number of operations may be arranged at a position close to the thumb (for example, on the left side when operated with the left hand). Further, when the positions of the two operation levers are slightly changed in the front-rear direction, the operability is improved.
[0010]
According to a second aspect of the present invention, there is provided an endoscope bending operation device provided with two operation levers for operating a bending portion provided in an endoscope insertion portion in a hand operation portion in order to achieve the above object. The two operation levers are arranged on the front and back of the hand operation unit, respectively.
[0011]
According to the second aspect of the present invention, since the two operation levers are arranged on the front and back of the hand operation unit, the operation lever arranged on the back is operated with the thumb of the hand holding the hand operation unit. Then, by operating the operation lever arranged on the front surface with the index finger, both operation levers can be operated at the same time.
[0012]
According to a third aspect of the present invention, there is provided a bending operation device for an endoscope provided with two operation levers for operating a bending portion provided in an endoscope insertion portion in a hand operation portion in order to achieve the above object. The two operation levers are arranged along a longitudinal direction of the hand operation unit.
[0013]
According to the third aspect of the present invention, since the two operation levers are arranged along the longitudinal direction of the hand operation unit, when operating one of the operation levers, the other operation lever is not touched, and an erroneous operation is performed. Can be prevented. In addition, it is preferable that the invention described in claim 3 is applied to a two-stage bending type endoscope. In this case, the operability can be improved by associating the curved portion on the distal end with the operating lever on the distal end and the curved portion on the proximal end with the operating lever on the proximal end.
[0014]
According to a fourth aspect of the present invention, there is provided a bending operation device for an endoscope provided with two operation levers for operating a bending portion provided in an endoscope insertion portion in a hand operation portion in order to achieve the above object. The two operation levers are disposed on the back of the hand operation unit so as to be overlapped with each other, and the rear operation lever is bent so as to be retractable.
[0015]
According to the fourth aspect of the present invention, since the operation levers are arranged on the back of the hand operation unit so as to be overlapped with each other, the two operation levers can be operated with the thumb, and the operability is good. Further, since the rear operation lever is provided so as to be retractable, when the front operation lever is operated, the rear operation lever is retracted so that the rear operation lever is not accidentally touched. Good operability.
[0016]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a bending operation device for an endoscope according to the present invention will be described in detail with reference to the accompanying drawings.
[0017]
FIG. 1 is a front view showing a first embodiment of an endoscope to which a bending operation device for an endoscope according to the present invention is applied, and FIG. 2 is a right side view of FIG. In the following description, the front-back direction is the front-back direction in a state where the hand operation unit is gripped, and is the up-down direction in FIGS.
[0018]
As shown in FIG. 1, the hand operation unit 11 of the endoscope 10 has an operation unit main body 12 formed in a substantially cylindrical shape, and an eyepiece unit 14 is provided at a base end of the operation unit main body 12. The insertion section 16 is provided at the tip of the operation section main body 12. The insertion portion 16 includes a flexible portion 18, a bending portion 20, and a distal end portion 22, and the bending portion 20 is bent by operating operation levers 24 and 26 described later. Reference numeral 28 in FIG. 1 is a forceps insertion portion for inserting a treatment tool such as forceps, and reference numeral 30 is a light guide connection portion for transmitting illumination light from the outside.
[0019]
As shown in FIG. 2, the operation levers 24 and 26 include knobs 24A and 26A and arms 24B and 26B, respectively, and the knobs 24A and 26A are located on the rear surface (the lower surface in the figure) of the operation unit main body 12. Are arranged side by side. In addition, the right knob 26A is disposed slightly behind (the lower side in the figure) the left knob 24A. Thus, when operating the right knob 26A with the thumb, it is possible to prevent the right knob 24A from coming into contact with the left knob 24A. In the case of the endoscope 10 in which the hand operation unit 11 is operated with the right hand, the left knob 24A may be disposed slightly behind the right knob 26A.
[0020]
The arms 24B and 26B are bent in accordance with the shape of the operation unit main body 12, and their base ends are connected to rotating bodies 32 and 34 protruding from the side surfaces of the operation unit main body 12, respectively. Each of the rotating bodies 32 and 34 is connected to a pulley (not shown) provided inside the operation section main body 12, and an angle wire (not shown) inserted through the insertion portion 16 of FIG. Can be wrapped around. When the pulley is rotated and the angle wire is pushed and pulled, the bending portion 20 in FIG. 1 is bent. Therefore, by bending the operation levers 24 and 26 to rotate the shafts 32A and 32B, the bending portion 20 is bent.
[0021]
Lock levers 36 and 38 are provided on the front side (upper side in the figure) of the operation section main body 12. The lock levers 36 and 38 are provided so as to be swingable, and the operation levers 24 and 26 are locked by swinging. Thereby, the bending portion 20 can be maintained in a desired bending posture.
[0022]
In the above-described embodiment, the bending portion 20 is bent in the vertical direction by the operation lever 24, and the bending portion 20 is bent in the left and right direction by the operation lever 26. However, the present invention is not limited to this. A frequently used bending direction may be assigned to the left operation lever 24. For example, when the present invention is applied to an endoscope having a two-stage bending structure in which two bending portions are arranged side by side in the longitudinal direction of the insertion portion 16, the bending operation of the bending portion on the distal end side that is frequently used is operated by an operation lever. 24.
[0023]
Next, the operation of the endoscope 10 configured as described above will be described.
[0024]
As shown by a two-dot chain line in FIGS. 1 and 2, the surgeon grasps the center of the operation section main body 12 with the left hand 40. Then, the knobs 24A and 26A of the operation levers 24 and 26 are operated with the thumb 40A to swing the operation levers 24 and 26. Since the knobs 24A and 26A are arranged side by side on the back of the operation unit main body 12, the operator can easily operate the thumb 40A by reaching both the knobs 24A and 26A. In particular, in the present embodiment, since the right knob 26A is disposed behind the left knob 24A, when operating the right knob 26A, the left knob 24A is operated. There is no danger that the thumb 40A will come into contact with the user, and the operation can be performed reliably.
[0025]
Further, in the present embodiment, the knobs 24A, 26A of the operation levers 24, 26 are arranged side by side on the left and right, so that the operation feeling of the operation levers 24, 26 becomes equal and the operability is good.
[0026]
Further, in the present embodiment, since the lock levers 36 and 38 are provided on the opposite sides of the knobs 24A and 26A of the operation levers 24 and 26, while the knobs 24A and 26A are operated with the thumb 40A, The lock levers 36 and 38 can be operated and locked by the index finger 40B.
[0027]
FIG. 3 is a front view showing an endoscope to which the bending operation device according to the second embodiment is applied, and FIG. 4 is a right side view of the hand operation unit shown in FIG.
[0028]
As shown in FIGS. 3 and 4, the hand operation unit 42 of the second embodiment has operation levers 44 and 46, and the knobs 44 </ b> A and 44 </ b> B of the operation levers 44 and 46 respectively operate the operation unit main body. Twelve front and rear surfaces (upper and lower surfaces in the figure). That is, the knob 44A of the operation lever 44 is arranged on the back side of the operation unit main body 12, and the knob 46A of the operation lever 46 is arranged on the front side of the operation unit main body 12. The knobs 44A and 46A are connected to the rotating bodies 32 and 34 via the arms 44B and 46B, respectively.
[0029]
The lock lever 48 that locks the operation lever 44 is disposed on the front side of the operation unit main body 12, and the lock lever 50 that locks the operation lever 44 is disposed on the rear side of the operation unit main body 12.
[0030]
In the hand operation unit 42 of the second embodiment configured as described above, the knob 44A of the operation lever 44 is operated by the thumb 40A, and the knob 46A of the operation lever 46 is operated by the index finger 40B. Therefore, it is possible to operate both operation levers 44 and 46 simultaneously.
[0031]
In the second embodiment, since the lock levers 48 and 50 are disposed on the opposite sides of the operation levers 44 and 46, respectively, the lock levers 48 and 50 are operated while the operation levers 44 and 46 are operated. Can be locked by operating. That is, while the knob 44A of the operation lever 44 is operated by the thumb 40A, the lock lever 48 can be operated by the index finger 40B to be locked. Similarly, the lock lever 50 can be operated with the thumb 40A and locked while the knob 46A of the operation lever 46 is operated with the index finger 40B.
[0032]
FIG. 5 is a front view showing an endoscope to which the bending operation device according to the third embodiment is applied, and FIG. 6 is a right side view of the hand operation unit shown in FIG.
[0033]
As shown in FIG. 5, the hand operation unit 52 of the third embodiment has operation levers 54 and 56, and the knobs 54A and 56A of the operation levers 54 and 56 are located on the rear surface of the operation unit main body 12 (see FIG. 5). (Middle, bottom). The knob 54A is disposed on the distal side, and the knob 56A is disposed on the proximal side.
[0034]
As shown in FIG. 6, the knobs 54A and 56A are connected to the rotating bodies 32 and 34 via the arms 54B and 56B, respectively, and are swingably supported. As shown in FIG. 5, the swing ranges of the knobs 54A and 56A are set so that the swing ranges do not interfere with each other.
[0035]
The lock levers 62 and 64 are arranged on the front side of the operation unit main body 12.
[0036]
According to the hand operation unit 52 of the third embodiment configured as described above, the operation levers 54 and 56 are operated by the thumb 40A of the left hand 40 of the operator. At this time, since the operation levers 54 and 56 are disposed apart from each other in the longitudinal direction of the operation section main body 12, when one of the operation levers 54 and 56 is operated, the thumb 40A contacts the other operation lever 54 or 56. I can't. Therefore, erroneous operation can be prevented.
[0037]
Further, since the knobs 54A, 56A of both operation levers 54, 56 are at the same distance from the thumb 40A to be operated, the respective operation levers 54, 56 can be operated without feeling uncomfortable.
[0038]
Note that the hand operation unit 52 of the third embodiment is suitable for a two-stage bending endoscope. As shown in FIG. 5, the two-stage bending endoscope includes a distal-side bending portion 58 and a proximal-side bending portion 60, and each of the bending portions 58 and 60 extends in the vertical direction or the horizontal direction. It is configured to be curved. The bending portion 58 on the distal end side is bent by operating the operation lever 54 on the distal end side. Further, the bending portion 60 on the proximal end side is bent by operating the operation lever 56 on the proximal end side. As described above, in the case of the two-stage bending type endoscope, by arranging the operation levers 54 and 56 corresponding to the arrangement of the bending portions 58 and 60, erroneous operation is eliminated and operability can be improved. .
[0039]
FIG. 7 is a front view showing an endoscope to which the bending operation device according to the fourth embodiment is applied, and FIG. 8 is a right side view of the hand operation unit shown in FIG.
[0040]
As shown in FIGS. 7 and 8, the hand operation unit 66 of the fourth embodiment has operation levers 68 and 70, and the knobs 68 A and 70 A of the operation levers 68 and 70 are On the back surface (the lower surface in the figure), they are arranged to overlap each other (up and down in the figure). That is, the knob 70A is arranged to overlap the rear side of the knob 68A.
[0041]
The knobs 68A and 70A are connected to the rotating bodies 32 and 34 via arm portions 68B and 70B, respectively, and are supported swingably. The arm 70B is provided with a joint mechanism that bends via the pin 72, so that the knob 70A can be moved to a retracted position indicated by a two-dot chain line.
[0042]
The lock levers 74 and 76 are arranged side by side on the front side of the operation unit main body 12.
[0043]
According to the fourth embodiment configured as described above, since both the knobs 68A and 70A are arranged at positions where the thumb 40A can reach naturally, the both operation levers 68 and 70 can be easily operated. Can be operated, good operability. When the front knob 68A is operated, the rear knob 70A is moved to the retracted position, so that the knob 68A can be operated smoothly.
[0044]
【The invention's effect】
As described above, according to the bending operation device for an endoscope according to the present invention, two operation levers are arranged side by side, or arranged side by side, or arranged front and rear, or Since it is arranged on the distal end side and the proximal end side, the bending operation can be easily performed with one hand.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of an endoscope to which a bending operation device for an endoscope according to the present invention is applied; FIG. 2 is a right side view of a hand operation unit in FIG. 1; FIG. 4 is a front view showing an endoscope to which the bending operation device according to the second embodiment is applied. FIG. 4 is a right side view of a hand operation unit in FIG. 3 FIG. 5 to which the bending operation device according to the third embodiment is applied. FIG. 6 is a right side view of a hand operation unit in FIG. 5; FIG. 7 is a front view showing an endoscope to which the bending operation device according to the fourth embodiment is applied; Right side view of the hand operation unit in FIG. 7 [Description of reference numerals]
DESCRIPTION OF SYMBOLS 10 ... endoscope, 11 ... hand operation part, 12 ... operation part main body, 16 ... insertion part, 20 ... bending part, 22 ... front-end | tip part, 24, 26 ... operation lever, 24A, 26A ... knob part, 36, 38: Lock lever, 40: Left hand, 40A: Thumb, 40B: Index finger

Claims (4)

In an endoscope bending operation device provided with two operation levers for bending operation of a bending portion provided in an endoscope insertion portion in a hand operation portion,
The bending operation device for an endoscope, wherein the two operation levers are arranged side by side on the back of the hand operation unit. In an endoscope bending operation device provided with two operation levers for bending operation of a bending portion provided in an endoscope insertion portion in a hand operation portion,
The bending operation device for an endoscope, wherein the two operation levers are respectively disposed on a front surface and a rear surface of the hand operation unit. In an endoscope bending operation device provided with two operation levers for bending operation of a bending portion provided in an endoscope insertion portion in a hand operation portion,
The bending operation device for an endoscope, wherein the two operation levers are arranged along a longitudinal direction of the hand operation unit. In an endoscope bending operation device provided with two operation levers for bending operation of a bending portion provided in an endoscope insertion portion in a hand operation portion,
The bending operation device for an endoscope, wherein the two operation levers are arranged on the back surface of the hand operation unit so as to overlap with each other, and the rear operation lever is bent so as to be retractable.

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