JPH076882Y2 - Endoscope operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to an endoscope operating device in which a driven member of an insertion portion is driven by a driving device.

[Problems to be Solved by Conventional Techniques and Inventions] In recent years, a light guide cable extended from one side of an operation portion by inserting an elongated insertion portion into a body cavity or the like is used to emit illumination light from a light source device to a tip portion. An endoscope is widely used that is capable of observing the inside of a body cavity by introducing the treatment tool into the body cavity, inserting a treatment tool through a forceps channel if necessary, and performing a treatment treatment using the treatment tool. .

This endoscope is provided with a bending portion provided on the distal end side of the insertion portion, for example, a plurality of node rings, and by bending the bending portion, the distal end portion having the objective lens is moved to the observation site. Some are configured to be oriented.

In addition, there is also one in which the tip portion is provided with a raising device for raising the forceps guided to the tip portion, and further, a part of the objective lens is moved to change the focal length and the visual field. In some cases, the field of view can be changed by rotating a bending member such as a mirror arranged on the optical axis of the objective lens.

The driven members such as the bending portion, the raising device, the lens moving device, and the turning device of the mirror that are mainly provided in the insertion portion of the endoscope are, for example, knobs and the like that are provided in the operation portion on the near side. It is generally designed to be driven by manually operating the operating member of, but in such a configuration,
The operator has to grasp the above-mentioned operation part with one hand and operate the operation member with the other hand, which is complicated.

To deal with this, for example, Japanese Utility Model Laid-Open No. 55-126804 has a motor, which is an example of a driving device, provided at the tip of the insertion portion.
A technique enabling the driven member to be driven by the motor is disclosed. However, in this technique, since the motor is arranged at the tip, the weight of the tip becomes heavy, which may deteriorate the operability of the endoscope, and the tip tends to have a large diameter. is there.

Further, West German Patent No. 2504663 discloses a technique in which a pulley is fixed to an output shaft of a motor provided in an operating portion, and a wire whose one end is connected to the driven member is wound around the pulley. . However, since the wire is provided along the axis of the insertion section and the operation section, the axis of the pulley needs to be arranged orthogonal to the axis of the operation section. As a result, the shaft center of the motor must be orthogonal to the shaft center of the operation unit, and the tail portion of the motor must be protruded from the side wall of the operation unit.

To deal with this, it is conceivable to connect the shaft of the pulley and the output shaft of the motor to each other via a bevel gear or the like.
When the gear is interposed, the weight of the gear becomes heavier, and the structure becomes complicated, which increases the labor of assembling and maintenance.

Further, in Japanese Utility Model Laid-Open No. 59-33402, a motor is arranged in a connector device of a light guide cable connected to a light source device, and a wire is wound around a pulley fixed to an output shaft of the motor. A technique is disclosed in which the wire is extended to the tip end side via the light guide cable and the insertion portion. However, in this prior art, the total length of the wire is unavoidably long, and there is a possibility that the responsiveness may be deteriorated due to loosening of the wire.

[Object of the Invention] The present invention has been made in view of these circumstances, and has a simple structure that prevents the tip portion from becoming thicker and heavier, and causes the tail portion of the drive device to protrude from the side wall of the operating portion. It is an object of the present invention to provide an endoscope operating device that avoids such a situation and further prevents a decrease in responsiveness.

[Means for Solving the Problems] In the endoscope operating device according to the present invention, an extended base portion, which is substantially orthogonal to the operation portion, is provided on one side of the operation portion provided on the base end side of the insertion portion. While the light guide cable is extended through the extended base portion, a driven member is provided in the insertion portion, and a drive device for driving the driven member is provided in the extended base portion.

[Operation] With this structure, the driven member of the insertion portion is driven by the drive device provided on the extended base portion of the light guide cable.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

1 to 5 relate to a first embodiment of the present invention, FIG. 1 is a side view of a drive device, FIG. 2 is a schematic configuration diagram of an endoscope device, and FIG. 3 is a side view of a distal end portion. FIG. 4 is a perspective view of the extended base portion, and FIG. 5 is an explanatory view showing a state in which the operating portion is gripped.

First, an outline of the endoscope apparatus will be described with reference to FIG.
The endoscope 1 has an elongated and flexible insertion portion 2 that can be inserted into a body cavity or the like, and a relatively thick operating portion 3 provided on the proximal end side of the insertion portion 2. .

A distal end portion 12 made of a rigid member is provided at the distal end of the insertion portion 2, and a plurality of nodes that are adjacent to the proximal end side of the distal end portion 12 and can be bent, for example, to each other. A curved portion 18, which is an example of a driven member and is formed of a ring, is provided.

On the other hand, on the base end side of the operation portion 3, an extended base portion 4 which is substantially orthogonal to the operation portion 3 is formed, and from the end portion of the extended base portion 4, a light guide cable in which a light guide 5 is housed is installed. 6 is extended. A connector device 7 is provided at the tip of the light guide cable 6, and the light guide cable 6 is connected to the light source device 8 via the connector device 7. When the connector device 7 is connected to the light source device 8, the incident end of the light guide 5 faces the light source lamp 8a, and the motor installed in the light source device 8 is also arranged. The control unit 9 and the video signal processing unit 10 are connected to the endoscope 1 via the connector device 7.

The light guide 5 is extended through the insertion portion 2, one end of which is fixed to the illumination through hole 13 formed in the tip portion 12, and the illumination light generated by the light source lamp 8a is The site to be observed is irradiated with light through the illumination through hole 13. Further, the objective optical system 14 is attached to the tip portion 12.
A fixed observation through hole 15 is formed in parallel with the illumination through hole 13, and a solid such as CCD is formed on the image forming surface of the objective optical system 14 through a color separation color mosaic filter 14a. An image sensor 15 is provided. And the objective optical system
The optical image of the observation region formed at 14 is photoelectrically converted by the solid-state image sensor 16, and the video signal processing in the light source device 8 is performed via 16a fixed to the substrate of the solid-state image sensor 16. It is configured to output to the unit 10. Further, the video signal processing unit 10 is connected to a monitor 10a, and the video signal of the solid-state image pickup device 16 is processed by the video signal processing unit 10 and output to the monitor 10a. It is possible to observe the image of the observed region via the.

Further, the tip portion 12 is provided with a suction port and an air / water feeding port (not shown), and by operating the suction switch 17a and the air / water feeding switch 17b provided in the operation unit 3, suction or water feeding is performed. It is possible to perform operations such as air and water supply.

By the way, as shown in FIG. 1, a DC motor 19 for up-and-down bending, which is an example of a driving device, and a left-and-right bending motor are provided in the extended base 4.
While the DC motor 20 is arranged in parallel, a frame 22 made up of a first frame 22a, a second frame 22b, and a third frame 22c is provided on the base end side of the operation section 3 respectively. Are arranged in parallel with. And this frame 22
The DC motor 19 for vertical bending and the DC motor 20 for horizontal bending described above are fixed to the first frame 22a arranged closest to the extended base 4.

These DC motors 1920 are connected to the motor control unit 9 provided in the light source device 8 via connection lines 23a and 23b, and a switch 24 provided beside the operation section 3 is provided. It is designed to be operated by. The switch
24 is a vertical bending switch 24a, 24 as shown in FIG.
b, the left and right direction bending switches 24c, 42d, which are composed of, for example, four pressing switches, and when the endoscope 1 is gripped as shown in FIG. When supported by the left hand, it is placed at the site where the index finger is located. The push switch for bending the switches 24 in the opposite direction is a seesaw switch, and is configured so that the other cannot be operated while one is being pressed.

On the other hand, the output shaft 19a of the vertically bending DC motor 19 penetrates the first frame 22a and the first frame 22a and the second frame 22a.
DC motor 2 for left / right bending
The 0 output shaft 20a penetrates the first and second frames 22a and 22b and is rotatably projected between the second frame 22a and the third frame 22c. And each output shaft 19a, 20a
Pulleys 25a and 25b are axially mounted at the ends of the.

Chains 26a and 26b each having a predetermined length are wound around the pulleys 25a and 25b. The chains 26a, 26b
Both ends of the operation wire 27a are extended to the insertion portion 2 side, and one ends of the up-down bending operation wire 27a and the left-right bending operation wire 27b are fixed to the extended ends. These wires 2
7a and 27b extend inside the insertion portion 2 to the tip of the bending portion 18, and the ends of the left and right bending operation wires 27b oppose the left and right node rings arranged at the tip of the bending portion 18. The ends of the up-down bending operation wire 27a are fixed to the regions, and to the vertically opposed regions, respectively. Therefore, when the wires 27a and 27b are pulled and loosened, the bending portion 18 is bent vertically and horizontally so that the tip portion can be directed to the observed region.

The extended base 4 in which the DC motors 19 and 20 are housed
As shown in FIG. 5, is provided obliquely to the bending direction of the bending portion 18, and when the operating portion 3 is supported by, for example, the left hand, the extended base portion 4 is placed on the back of the hand. It has become so. As a result, the weight of the DC motors 19, 20 and the like can be supported by the back of this hand, and the operation unit 4 can be easily supported and gripped.

When observing with the endoscope 1 having such a configuration, the insertion portion 2 is inserted into a body cavity or the like, and the light guide cable 6 is connected to the light source device 8 via the connector device 7, and the light source device 8 is connected. Turn on the power. Then, the illumination light generated by the light source lamp 8a of the light source device 8 is guided to the tip portion 12 by the light guide 5 and is radiated to the site to be observed through the illumination through hole 13 of the tip portion 12. .

The optical image of the observed region is formed in the image area of the solid-state image pickup device 16 by the objective optical system 14 through the color mosaic filter 14a for color separation, photoelectrically converted, and provided in the light source device 8. It is input to the video signal processing unit 10. Then, the video signal processing unit 10 processes the signal and outputs it to the monitor 10a, so that the image of the observed region can be observed through the monitor 10a.

Further, when the observed portion is located laterally with respect to the axis of the insertion portion 2, the switch 24 is operated to bend the bending portion 18 to direct the distal end portion 12 to the observed portion.

That is, when the upward bending switch 24a or the downward bending switch 24b is operated, the vertical bending DC motor 19 is operated via the motor control unit 9 in the light source device 8, and the output shaft 19a of the vertical bending DC motor 19 is operated. The pulley 25a is rotated via the. Then, the chain 26a is moved in the axial direction of the operation section 3 by the pulley 25a, so that the chain 26a is moved.
The vertical bending operation wire 27a fixed to 26a is loosened or pulled.

The other end of the vertical bending operation wire 27a is fixed above and below the tip side of the bending portion 18, and when each of the fixed portions is pulled or loosened, the bending portion 18 causes the pulley 25 to move.
It is curved up and down according to the rotation angle of a. as a result,
The tip portion 12 is directed to the observed region, and the observed region can be observed on the monitor 10a.

Further, when the operation of the switch 24 is stopped when the distal end portion 12 is directed to the site to be observed, the operation of the DC motor 19 is stopped, and the bending portion 18 is stopped while being bent, It becomes possible to continue the observation of the observed region.

Such an operation is the same not only when the bending portion 18 is bent vertically but also when it is bent horizontally.

On the other hand, when it becomes necessary to return the curved portion 18 to the linear shape, the linear portion can be easily made to be linear by operating the switch 24. In this case, the pulleys 25a, 25
When the position of b in the rotating direction is detected, and when the pulleys 25a and 25b are returned to the initial state, for example, the indicator lamp provided in the operation unit 3 is turned on, the curve It is possible to easily know the state of the section 18.

In this embodiment, a vertical and horizontal curved DC motor is used as a driving device.
I explained the example where 19,20 was used, but this drive is DC
There is no need to be limited to motors 19,20, eg AC
Other types of motors such as motors, pulse motors, and ultrasonic motors may be used, and other configurations such as hydraulic pressure are also possible.

It is also possible to use the DC motors 19 and 20 with a speed reducer to increase the bending operation torque.

6 and 7 relate to the second embodiment of the present invention. FIG. 6 is a side view of the driving device, and FIG. 7 is a schematic configuration diagram of the endoscope device. The same members as those described in the first embodiment and members having the same operation as those described in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

This embodiment shows an example in which the operating device according to the present invention is used in a fiberscope, and as shown in FIG.
An external television camera 28 can be attached to the eyepiece 3a provided on the base end side of the operation unit 3. An image guide 29 is provided so as to face the objective optical system 14 provided at the tip portion 12, and the optical image of the observed region formed by the objective optical system 14 is passed through the image guide 29. And is transmitted to the eyepiece 3a.

Further, an image forming optical system 28a is disposed in the television camera 28, and the optical image of the observed portion transmitted to the eyepiece 3a is a color mosaic filter for color separation by the image forming optical system 28a. An image is formed on the solid-state image sensor 16 via 14a. The television camera 16 is connected via a signal line 23 to a video signal processing unit 10 provided separately from the light source device 8, and a signal photoelectrically exchanged in the solid-state image pickup device 16 is supplied to the video signal processing unit. The signal is processed at 10 and output to the monitor 10a.

On the other hand, as shown in FIG. 6, only the right and left bending DC motor 20 is provided on the extended base portion 4 formed at a substantially right angle on the base end side of the operation portion 3. This left and right bending DC motor 20
Is fixed to the first frame 22a of the frame 22 arranged in the operation unit 3. The output shaft 20a of the DC motor 20 is rotatably projected between the first frame 22a and the second frame 22b, and a pulley 25a is axially mounted on the projected portion. The DC motor 20 is connected to the motor control unit 9 in the light source device 8 by a connection line 23b, and is provided with a switch 24 including a rightward bending switch 24c and a leftward bending switch 24d provided on one side of the operating portion 3. By operating the pulley 25a, the bending portion 18 can be bent.

Further, another pulley 25b is rotatably disposed between the second frame 22b and the third frame 22c. The central shaft 30a of the pulley 25b is projected to the outside of the operating portion 3 via the repetitive frame 22c, and the knob 30 for vertically bending the bending portion 18 is mounted on the protruding portion.

With this configuration, the switch
c. By operating the DC motor 20 by operating the leftward bending switch 24d, the left and right bending operation wire 27a is pulled or loosened via the pulley 25a, while the knob 30 is rotated to rotate the other pulley. The vertical bending operation wire 27a is pulled or loosened via 25b.

In the present embodiment, since the number of the DC motor 20 which is an example of the driving device is single, the weight of the operation portion 3 and the extended base portion 4 is reduced by that much, and the burden on the operator is lightened.

8 and 9 relate to the third embodiment of the present invention, FIG. 8 is a side view of the endoscope, and FIG. 9 is a side view of the distal end portion.

In this embodiment, the endoscope 1 is configured as a side-view type, and an illumination through hole 13 and an observation through hole 15 in which a light distribution lens 13a is disposed.
And are formed to be directed to the side of the tip portion 12. Also,
On the side of the distal end portion 12 where the illumination through hole 13 and the observation through hole 15 are directed, a storage chamber 31 in which a forceps raising inductor 32 is swingably arranged is provided. Cage, this inductor 32
Is set as a driven member.

A forceps channel 33 is connected to the storage chamber 31.
Further, a raising wire 32a is engaged with the free end side of the inductor 32, and the raising wire 32a is extended to the operation portion 3 side through an insertion hole 32b formed in the insertion portion 2. . A DC motor 34 for raising the forceps is arranged in the extended base portion 4 provided on the base end side of the operation portion 3.
The pulley 34b mounted on the output shaft 34a of the
32a is wound.

A switch 35 for operating the DC motor 34 is provided at the base end of the operation section 3.

With this configuration, when the switch 35 is operated to rotate the pulley 34b, the raising wire 3 wound around the pulley 34b is
2a is pulled and the inductor 32 is raised.

FIG. 10 is a side view of the tip portion according to the fourth embodiment of the present invention.

In this embodiment, a zoom lens 37 is provided between the objective optical system 14 provided at the tip 12 and the solid-state image sensor 16, and the zoom lens 37 is set as a driven member. That is, the zoom lens 37 is the objective optical system 14 described above.
It is possible to slide back and forth along the optical axis of, and one end of a sliding wire 38 is engaged with one side of the frame 37a holding the zoom lens 37. The other end of is connected to a drive device (not shown).

Then, when the sliding wire 38 is pulled by this driving device, the zoom lens 37 is slid along the optical axis via the frame 37a, so that the optical image formed on the solid-state imaging device 16 is enlarged or expanded. It is reduced.

FIG. 11 is a side view of the tip portion according to the fifth embodiment of the present invention.

In this embodiment, the endoscope 1 is configured so that the field of view can be changed. That is, the tip 12 is made of a transparent member, and a mirror 36, which is an example of a driven member on the tip side of the objective optical system 14 disposed at the tip 12, is swingably provided. ing. While one end of the operation wire 36a is engaged with the free end of the mirror 36, the other end of the operation wire 36a is connected to a drive device (not shown),
By swinging the mirror 36 through the operation wire 36a, the mirror is inserted in the optical axis of the objective optical system 14.

With such a configuration, in the state where the mirror 36 is not interposed in the optical axis, an image in front of the central axis of the insertion portion 2 is imaged on the solid-state image sensor 16, while the mirror 36a is interposed in the optical axis. The image of the part located laterally to the optical axis is a mirror
At 36, the light is reflected toward the objective optical system 14 side. Since the reflected part is determined by the angle between the mirror 36 and the optical axis,
The viewing direction can be continuously changed by adjusting the angle of the mirror 36.

In addition, the swing angle of the mirror 36 by the drive device with respect to the optical axis
Set to 20 °, 45 °, etc., and set the mirror 36 by the driving device.
It is also possible to configure the endoscope 1 so that it can be changed to a direct-view type, a perspective type, or a side-view type by changing the angle of.

[Advantages of the Invention] As described above, the endoscope operation device according to the present invention has a simple structure, prevents the distal end portion from becoming thicker and heavier, and allows the tail portion of the drive device to operate as an operating portion. It has an effect that it is prevented from protruding from the side and further, deterioration of responsiveness is prevented.

[Brief description of drawings]

1 to 5 relate to a first embodiment of the present invention, FIG. 1 is a side view of a drive device, FIG. 2 is a schematic configuration diagram of an endoscope device, and FIG. 3 is a side view of a distal end portion. FIG. 4 is a perspective view of the extended base portion, FIG. 5 is an explanatory view showing a state in which the operating portion is held, and FIG.
7 and 8 relate to a second embodiment of the present invention. FIG. 6 is a side view of a driving device, FIG. 7 is a schematic configuration diagram of an endoscope device, and FIGS. 8 and 9 are of the present invention. FIG. 8 is a side view of the endoscope, FIG. 9 is a side view of the distal end portion, and FIG. 10 is a side view of the distal end portion according to the fourth embodiment of the present invention according to the third embodiment. FIG. 6 is a side view of a tip portion according to a fifth embodiment of the present invention. 2 …… Insertion part 3 …… Operating part 4 …… Extended base part 6 …… Light guide cable 18,32,36 …… Driven member 34 …… Drive device

Claims (1)

[Scope of utility model registration request] 1. An extended base portion, which is substantially orthogonal to the operation portion, is provided on one side of the operation portion provided on the proximal end side of the insertion portion, and a light guide cable is extended through the extended base portion. On the other hand, the endoscope operating device is characterized in that a driven member is provided in the insertion portion, and a drive device for driving the driven member is provided in the extended base portion.