JP3069766B2 - Endoscope hand operation 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 hand-operated structure of an endoscope, and more particularly to a hand-operated structure of an endoscope provided with two forceps ports in the hand-operated part.

[0002]

2. Description of the Related Art In this type of endoscope, two forceps channels are also used as a suction conduit. For example, one forceps channel is connected to a suction device, and the other forceps channel is connected to a switching valve. And communicate with one forceps channel through the other. Thereby, when the switching valve is opened and the suction device is driven, suction can be performed simultaneously with the two forceps channels, and when the switching valve is closed,
Suction can be performed with only one forceps channel.

[0003] The two forceps ports and the two forceps channels are connected to each other by two pipes in a hand operation section of the endoscope, and each pipe tool is fixed to the hand operation section by a screw or the like. ing.

[0004]

However, in the conventional operation part of the endoscope, since two pipes are fixed to the operation part, the fixing operation is troublesome and the fixing operation is troublesome. Since a tube such as a forceps channel must be assembled to the set plumbing tool, there is a disadvantage in that the assembly is troublesome.

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances, and provides a hand-operated endoscope structure of an endoscope which can easily fix a pipe and attach a tube or the like to the pipe. With the goal.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides an endoscope with a hand-operated structure having two treatment tool insertion ports in the hand-operated portion of the endoscope. The two treatment tool insertion ports and the two channels inserted through the insertion portion of the endoscope are connected to each other by two pipes, and
One of the two pipes is fixed to the hand operation unit, and the other is held by the one pipe.

[0007]

According to the present invention, one of the two plumbing tools is fixed to the hand operation section, and the other plumbing tool is held by the one plumbing tool. Therefore, in the present invention, the fixing operation of the plumbing tool can be easily performed because only one of the plunging tools is required. There is no need for a system, and there is a high degree of freedom when assembling tubes to plumbing fixtures.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an endoscope according to an embodiment of the present invention; FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is an external view which shows the hand operation part of the endoscope to which the hand operation part structure of the endoscope of this invention was applied. As shown in the drawing, an insertion portion 12 is connected to a lower end portion of the hand operation portion 10, and a bending portion and a tip configuration portion (not shown) are connected to a tip end of the insertion portion 12. An eyepiece 16 is formed at the upper end of the hand operation unit 10, and a lever 18, a suction operation button 20, and an air supply / water supply operation button 22 for bending and operating the bending portion are provided in the vicinity of the eyepiece 16. Have been. In addition, the hand operation unit 10
Is connected to one end of a connection tube 24, in which a suction tube (not shown), a light guide cable and the like are arranged. One end of the suction tube is connected to a valve of the suction operation button 20, and the other end is connected to a suction device (not shown).

On the other hand, a projecting portion 26 inclined forward is formed at the lower portion of the hand operating portion 10, and two forceps ports 28 and 30 are juxtaposed at the upper end of the projecting portion 26. The forceps port 28
Is formed with a larger diameter than the forceps port 30 so that two types of treatment tools having different sizes can be inserted from the two forceps ports 28 and 30. A switching valve 32 is rotatably attached to the side of the protrusion 26.

FIG. 2 is a longitudinal sectional view of a main part of the hand operation unit 10 along the axis of the forceps port 28, and FIG.
FIG. 3 is a cross-sectional view of a main part of the hand operation unit 10 along an axis 0.
As shown in FIG. 2, two cylinders 3
The forceps port 28 is connected to the piping 38 via the cylindrical bodies 34 and 36. The cylinders 34, 36
Is screwed into the protruding portion 26 coaxially with the forceps port 28, and airtightness is maintained by packing (not shown). An opening 34 </ b> A is formed on a side surface of the cylindrical body 34, and the opening 34 </ b> A communicates with the switching valve 32.

The pipe 39 has an obtuse angled conduit 39 to guide the treatment tool inserted through the forceps port 28 toward the insertion portion. Further, the piping tool 38 is positioned at a predetermined position by fixing a thick portion 38A to the frame 40 of the hand operation unit 10 with the screw 42. Further, the plumbing tool 38 has a communication port 38B formed at an upper part and a communication port 38C formed at a lower part, and the communication port 38B is connected to the cylinder 36 via a connecting jig 44. Is connected via a connecting jig 48 to the base end portion 46A. The distal end of the forceps channel 46 is connected to a forceps window formed in the distal end component of the insertion section. Thus, the treatment tool inserted through the piping tool 38 is guided by the forceps channel 46 to the forceps window.

The forceps port 30 shown in FIG. 3 is also provided with two cylinders 48 and 50 at the lower part, similarly to the forceps port 28, and is connected to a pipe fitting 52 via the cylinders 48 and 50. The cylindrical bodies 48 and 50 are screwed and fixed coaxially with the forceps port 30 in the protruding portion 26, and airtightness is maintained by packing (not shown). An opening 48A is provided on the side surface of the cylindrical body 48.
The opening 48 </ b> A communicates with the switching valve 32. Therefore, when the switching valve 32 is opened, the cylinder 48 communicates with the cylinder 34 on the side of the forceps port 28 shown in FIG.

The main conduit 53 of the plumbing tool 52 is bent at an obtuse angle so as to guide the treatment tool inserted from the forceps port 30 toward the insertion portion. In addition, the piping tool 52 has a communication port 52A formed in the upper part, and the lower part is branched into two parts to form the communication port 5A.
2B and 52C are formed before and after. The communication port 52A
Is connected to the cylinder 48 on the forceps port 30 side via a connecting jig 56, the communication port 52B is connected to the distal end 54A of the suction tube 54, and the communication port 52C is the base end 56A of the forceps channel 56. Through a connecting jig 58. The distal end of the forceps channel 56 is connected to a forceps window formed in the distal end component of the insertion section. Thus, the treatment tool inserted through the piping tool 52 is guided by the forceps channel 56 to the forceps window.

The suction tube 54 is connected at its base end to a valve of the suction operation button 20 shown in FIG. 1, and is opened to communicate with the suction device via the aforementioned suction tube. You. Therefore, if the suction device is operated by operating the valve, the liquid accumulated in the affected part or the like can be sucked from the forceps window via the forceps channel 56, the pipe fitting 52, and the suction tube 54. Also,
By opening the switching valve 32 to communicate the cylinder 34 on the forceps port 28 side with the cylinder 48 on the forceps port 30 side, suction can be performed by the two forceps channels 46 and 56.

By the way, as shown in FIG. 4, the plunger 52 has mounting pieces 58 and 60 projecting from both sides. A substantially V-shaped concave portion 62 is formed on a side surface of the piping device 38 facing the piping device 52. Plumbing tool 52
Puts the mounting piece 58 on one side on the bottom 62A of the concave portion 62 of the plumbing tool 38 (see FIG. 5), and
The front end surface 58A is held in contact with the wall surface 62B of the concave portion 62 to be held by the pipe fitting 38. Further, as shown in FIG. 5, the piping tool 52 is positioned at a predetermined position in the hand operation unit 10 by inserting the mounting piece 60 on the other side into the hole 40 </ b> A formed in the frame 40.

Next, the procedure for assembling the pipes 38, 52 and the like in the structure of the operation section of the endoscope constructed as described above will be described. First, the pipe fitting 38 is fixed to the frame 40 with the screw 42, and the cylindrical body 3 is
6 and 34 are screwed in order, and the lower end of the cylindrical body 36 is
After being pressed into contact with the upper communication port 38B, the cylindrical body 36 and the pipe 38 are fixed by the connecting jig 44 so that the forceps port 28 and the pipe 38 are communicated. Then, the lower communication port 38 </ b> C of the plumbing tool 38 and the base end 46 </ b> A of the forceps channel 46 are fixed by the connecting jig 48. Thereby, the forceps port 28 and the forceps channel 46 are communicated with each other, and the assembling on the piping tool 38 side is completed.

Next, the assembling of the pipe fitting 52 will be described. First, the suction tube 54 is connected to the communication port 52B of the plumbing tool 52. Then, the mounting piece 58 of the plumbing tool 52 is placed on the bottom 62A of the concave portion 62 of the plumbing tool 38,
The other attachment piece 60 is inserted into the hole 40 </ b> A of the frame 40, and the plumbing tool 52 is held by the plumbing tool 38. Then, the cylinders 50 and 48 are sequentially screwed into the protruding portion 26, and the lower end of the cylinder 50 is pressed against the upper communication port 52 </ b> A of the piping tool 52. At this time, a force in the direction of arrow A in FIG.
Since 8A is supported by the wall surface 62B of the concave portion 62 of the plumbing tool 38, the mounting position of the plumbing tool 52 does not deviate. Then, in this state, the tubular body 50 and the piping tool 52 are connected to the connecting jig 56.
To allow the forceps port 30 and the piping tool 52 to communicate with each other. Then, the lower communication port 52C of the plumbing tool 52 and the base end portion 56A of the forceps channel 56 are fixed by the connecting jig 58. Thereby, the forceps port 30 and the forceps channel 5
6 are communicated with each other, and the assembling on the piping tool 52 side is completed. At this time, even if the connecting position between the communication port 52B and the forceps channel 56 is displaced, the plumbing tool 52 is
8, the position of the plumbing tool 52 can be shifted on the plane shown in FIG. 5 (the plane orthogonal to the axial direction of the hand operation unit 10). 56 can be easily connected.

As described above, according to the structure of the operation section of the endoscope of this embodiment, one of the two pipes 38, 52 is fixed to the hand operation section 10, and the other pipe is connected. 5
2 is held by one plumbing tool 38, the plumbing tools 38, 52 can be fixed more easily than the conventional structure in which the two plumbing tools are respectively fixed, and the forceps channel 56 to the plumbing tool 52. Can be easily assembled.

[0019]

As described above, according to the structure of the operation portion of the endoscope according to the present invention, one of the two piping devices is fixed to the operation portion, and the other piping device is connected to the other. Since the pipe is held by one of the pipes, the pipe can be easily fixed, and the tube or the like can be easily attached to the pipe.

[Brief description of the drawings]

FIG. 1 is an external view of a hand operation unit to which a hand operation unit structure of an endoscope according to the present invention is applied.

FIG. 2 is a longitudinal sectional view of a first forceps port including a hand operation unit.

FIG. 3 is a longitudinal sectional view of a second forceps port including a hand operation unit.

FIG. 4 is a perspective view showing a holding state of a second piping device with respect to the first piping device.

FIG. 5 is a cross-sectional view of the hand operation unit of the endoscope along the line 5-5 in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hand operation part 28, 30 ... Forceps port 32 ... Switching valve 38, 52 ... Piping tool 46, 56 ... Forceps channel 54 ... Suction tube 58, 60 ... Mounting piece 62 ... Concave part

Claims (1)

(57) [Claims] 1. An endoscope having a hand-operated portion of an endoscope provided with two treatment tool insertion ports in a hand-operated portion of the endoscope, wherein the two treatment tool insertion ports are inserted through the insertion portion of the endoscope. The two arranged channels are connected to each other by two pipes, and one of the two pipes is fixed to the hand operation unit, and the other is connected to the one pipe. A hand-held operation unit structure of the endoscope, characterized by being held.