JP2929474B2 - Endoscope treatment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an endoscopic treatment in which a drive source for driving a rotary treatment member is detachably attached to a distal end portion of an insertion portion of the endoscope. Related to the device.

[Prior Art] In recent years, endoscopes (industrial) that can be inspected without disassembly in industrial fields such as inside a chemical plant, a nuclear reactor, and an engine have been frequently used. For example, in a jet engine, damage such as chipping of the blade of a turbine blade that is rotationally driven may occur.In this case, if the damaged portion is left as it is, stress is concentrated on the damaged portion and the damaged portion becomes large. turn into. or,
The screws inside the device may become loose, and if left unchecked, the screws will fall off. In this way, it is often necessary to take measures such as repair and adjustment without disassembling the inside of the device.

To cope with this, for example, an industrial endoscope described in Japanese Patent Application Laid-Open No. 58-162924 has been proposed. In this prior art example, a rotational force transmitting member is provided inside an industrial endoscope itself, and various rotational treatment members can be detachably attached at a distal end portion.

[Problems to be Solved by the Invention] By the way, the prior art example is for transmitting power from a rotary drive source provided outside the endoscope to the rotary treatment member at the distal end portion in the endoscope insertion portion. Since the rotational force transmitting member is guided by the protective tube, friction occurs between the rotational force transmitting member and the protective tube during power transmission, so that efficient power transmission cannot be performed. The member and the protection tube are easily damaged, and further, the protection tube also vibrates due to the vibration caused by the rotation of the rotational force transmitting member inside the insertion portion, and the protection tube hits the inserted image guide or light guide, and the image guide or the light guide is hit. The light guide may be damaged.

Furthermore, in the prior art example, a long distance from a rotary drive source provided outside the endoscope to a rotary treatment member at the end of the endoscope must be connected by a torque transmitting member to transmit the torque of the drive source. No.

The present invention has been made in view of these circumstances, and transmits a rotational force by connecting a long distance from a rotational drive source provided outside the endoscope to a rotational treatment member at the endoscope end by a rotational force transmitting member. This eliminates the need for this, making it possible to efficiently transmit the rotational force of the rotary drive source to the rotary treatment member, and by preventing the rotating transmission member from passing through the insertion section, eliminating damage to the image guide and light guide due to rotational vibration. It is an object of the present invention to provide a treatment device for an endoscope.

Means for Solving the Problems and Action Thereof To achieve the above object, a treatment apparatus for an endoscope according to the present invention comprises one or more sheets detachably attached to a distal end portion of an endoscope insertion portion. An attachment having a lens, a rotation drive source provided on the attachment so as to be in parallel with the lens, and a rotation treatment member provided on the attachment and having a rotational force transmitted from the rotation drive source by a rigid member. ing.

With this configuration, an attachment having a rotation drive source, a rotation treatment member, and one or more lenses is detachably attached to the distal end of the endoscope, and the inside of the device and the like is visually recognized by the endoscope. In addition, the endoscope guides the rotation treatment member to a target site to perform repair, adjustment, and the like.

[Example] Hereinafter, the device of the present invention will be described with reference to the drawings.

1 to 4 relate to a first embodiment of the device of the present invention. FIG. 1 is a sectional view of a main part showing a distal end portion of an insertion portion of an endoscope and a treatment device, and FIG. FIG. 3 is a sectional view showing the connection between the grindstone and the rotating shaft of the motor, and FIG. 4 is a schematic explanatory view showing the entire configuration and an example of use.

As shown in FIG. 4, the industrial endoscope device 1 includes a fiber endoscope 2 as an industrial endoscope, a light source device 3 for supplying illumination light to the fiber endoscope 2, and a fiber endoscope. Mirror 2
, A camera control unit (hereinafter abbreviated as CCU) 5 for performing signal processing on the TV camera 4, a television monitor 6 for displaying a standard video signal output from the CCU 5, and It consists of.

The fiber endoscope 2 has an elongated insertion section 8 so as to be inserted into a subject such as a jet engine 7 as a device, and a large-diameter operation section 9 is formed at the rear end of the insertion section 8. An eyepiece 10 for visual observation is formed at the rear end of the operation unit 9, and a universal cord 11 is extended from a side of the operation unit 9 so that the universal cord 11 can be connected to the light source device 3.

The insertion portion 8 has a rigid distal component 12 formed at the front end thereof, a curved portion 13 formed at a rear portion adjacent to the distal component, and by rotating a curved knob provided on the operation portion 9, The bending portion 13 is bent up / down / left / right or the like so that the distal end portion 12 can be directed in a desired direction.

The rear portion adjacent to the curved portion 13 has a long hard portion 15
A soft portion 16 of an appropriate length is formed at the rear, that is, at the rear end of the insertion portion 8.

A light guide for transmitting illumination light is inserted into the insertion portion 8 and the universal cord 11, and the connector provided at the end of the universal cord 11 is connected to the light source device 3. Light at the tip
The data is transmitted to the end face on the 12 side. Thus, the illumination light is emitted forward through the illumination optical system 18 as shown in FIG.

The test site illuminated with this illumination light is shown in FIGS.
As shown in the drawing, an optical image is formed on a focal plane of the objective optical system 19 formed adjacent to the illumination optical system 18. In this focal plane, the tip surface of the image guide 20 is provided, and by the image guide 20,
The observation optical image is transmitted to the end face on the eyepiece section 10 side.

An eyepiece (not shown) is provided in the eyepiece unit 10,
The optical image transmitted through the eyepiece can be observed with the naked eye. The external TV camera 4 detachably attached to the eyepiece unit 10 is provided with an imaging lens. The imaging lens is used to form an optical image on, for example, a CCD as a solid-state imaging device. It has become.

The image signal photoelectrically converted by the CCD is input to the CCU 5, subjected to signal processing, and displayed on the television monitor 6 in color.

An endoscope treatment device 21 according to the embodiment of the present invention is detachably attached to the industrial endoscope 2 so that various treatments such as repair or adjustment of the inside of the device can be performed. I have.

The treatment device 21 for an endoscope has an attachment body 22 having a mounting hole 22 for engaging the distal end portion 12 of the endoscope insertion portion 8.
A motor 24 serving as a rotation drive source is internally provided in 23, a grindstone 26 serving as a rotation treatment member is connected to a rotation shaft 25 of the motor 24, and further attached to the illumination optical system 18 of the distal end component 12 (when mounted). An illumination optical system (not shown) having the same optical axis and an objective optical system 27 having the same optical axis (when mounted) are provided in the objective optical system 19. A connecting ring 29 having a male screw 28 on the outer periphery on the distal end side is provided on the outer periphery of the endoscope distal end constituting portion 12.
Is rotatably mounted, and the attachment body
The female screw 30 provided at the rear part of the mounting hole 22 of the screw 23 is screwed into the male screw 28 of the connection ring 29, the attachment body 23 is pulled into the endoscope distal end component 12, and the endoscope treatment device 21 is detachably attached. Has become. A pair of conducting wires 31 is inserted through the endoscope 2 from the near side, and is connected to a rod-shaped electrode 33 disposed on the distal end component 12 via an insulating member 32.
The conducting wire 31 is extended from the operation unit 9 of the endoscope 2 to the outside via a connector or without the connector, and is connected to a power supply device 34 having a motor controller. On the other hand, the attachment body 23 is provided with an electrode 36 via a conductive rubber 35 at a position where the axis of the electrode 33 coincides with the electrode 33 of the tip constituting portion 12 when it is desired to be mounted. Connected to the motor 24. The conductive rubber 35
The electrode 33 is insulated from the attachment body 23 by an insulating member 38.

A positioning groove is provided on the outer periphery of the distal end of the endoscope distal end forming section 12.
39 is formed, and a positioning pin 40 that engages with the groove 39 is protrudingly provided in the mounting hole 22 of the attachment body 23 of the treatment device 21 attached to the distal end component 12, and the distal end component is always The optical axis and the electrode of each optical system on the side and the treatment device side match each other. Further, as shown in FIG. 3, the grindstone 26 connected to the motor 24 has an engagement hole 2 formed by connecting the rotation shaft 25 of the motor 24 to the connection shaft 26a of the grindstone 26.
6b, and solder 26d is filled and fixed in a solder hole 26c formed from the outer periphery of the connection shaft 26a to the engagement hole 26b. Therefore, the grindstone 26 can be removed from the motor rotation shaft 25 by melting the solder 26d, and can be replaced.
Incidentally, a screw or the like may be used as a means for attaching and detaching the grinding stone 26.

The endoscope 2 equipped with the endoscope treatment device 21
As shown in FIG. 4, for example, when the compressor blade 41 of the jet engine 7 is defective at the time of inspection as shown in FIG. 4, the grinding can be performed using the grindstone 26. In the case of the grinding, the partition 4 of the jet engine 7
The distal end side of the insertion section 8 to which the grindstone 26 is attached is introduced into the blade 41 side by inserting the access ports 44 and 45 of 2,43. In this case, the insertion portion 8 can be smoothly inserted by fixing the insertion portion fixing jig 46 to the partition wall 43 provided with the access port 45 with a screw. In addition, as the rotation treatment member, not only the grindstone 26 but also a drill, a driver, a file, a wrench, a brush, a tap, and the like are used as needed.

Further, in this embodiment, a fiber endoscope is illustrated and described as an endoscope, but the device of the present invention is an electronic endoscope using a solid-state imaging device, or a rigid endoscope using a relay lens or the like. An endoscope naturally applies.

FIG. 5 is a sectional view of a main part showing a modification of the first embodiment of the present invention. In this modified example, a view direction changing prism 27a is provided in an objective optical system 27 provided in the attachment body 23 so that the view direction is oblique and the grindstone 26 can be seen widely. Note that, in this modification, the illumination optical system is also arranged, if necessary, with part or all of the illumination optical system in the viewing direction.

FIG. 6 is a sectional view of a main part according to a second embodiment of the present invention.

In this embodiment, the supply of power to the motor 24 of the treatment device is
The treatment is performed using the treatment instrument channel 41 provided in the insertion section 8 without incorporating the conducting wire 31 and the electrode 33 in the insertion section 8 of the endoscope as in the first embodiment. That is,
A lead wire 42 connected to an external power supply device 34 is inserted through the forceps port into the treatment instrument channel 41 and connected to the motor 24, or a lead wire 44 connected to the motor 24 is connected to the channel of the insertion portion distal end portion 12 It is inserted into the channel 41 through the opening and pulled out from the forceps port on the hand side. Further, in the illustrated example of this embodiment, the attachment body 23 is configured to be attached to the endoscope distal end component 12 with the screw 42,
Of course, as shown in the first embodiment, it may be attached by a connection ring method. According to this embodiment, it can be applied to an extremely general industrial endoscope. Other configurations, operation and effects are the same as those of the first embodiment.

FIG. 7 is a sectional view of a main part according to a third embodiment of the device of the present invention.

This embodiment is different from the second embodiment in that when the endoscope has no treatment instrument channel or cannot be used for insertion of a lead wire due to another use or the like, the lead wire 42 is inserted into the endoscope insertion portion 8. Are fixed along the outer periphery of the tape with a tape 43 or the like. The attachment body 23 has a lead wire lead-out hole 44 from which the lead wire 42 connected to the motor 24 is drawn out. The other configuration, operation and effect are the same as those of the first or second embodiment.

FIG. 8 is a sectional view showing a main part of a fourth embodiment of the apparatus of the present invention.

In this embodiment, a part of the motor of the distal end portion 12 of the endoscope is used.
A notch storage portion 45 is formed by notching according to the shape of the attachment main body 23 in which the inside 24 is provided. The attachment body 23 of the treatment device 21 includes a motor 24 and its electrodes.
Only the portion where the 36 is stored is bulged from the inner circumference to form a bulged portion 23a, and the other portions are formed in a cylindrical shape mounted on the outer circumference of the distal end component 12. According to this embodiment, it is not necessary to provide the illumination optical system and the objective optical system 27 on the treatment device 21 side,
Even if the treatment device 21 is connected, the length of the distal end hard portion can be suppressed from becoming longer.

FIG. 9 is a sectional view of a main part showing a modification of the fourth embodiment. This modified example uses a ramp when no grindstone is used.
By attaching the attachment body 47 provided with 46 to the distal end component 12, an endoscope with a large amount of illumination light can be provided.

FIG. 10 is a sectional view showing a main part of a fifth embodiment of the device of the present invention.

In this embodiment, an attachment body 54 is detachably attached to the outer periphery of the distal end component 12 of a general endoscope by, for example, a screw 42 to constitute the treatment apparatus 21.
Reference numeral 24 is disposed on the side of the cylindrical attachment main body 54 having no optical system so as to be located on the side of the distal end component 12. The motor housing 55 of the attachment body 54
The rear surface is formed in a tapered shape so as not to be caught when pulled out from the inside of the device. Incidentally, reference numeral 56 in the figure denotes a light guide.

 Other configurations, operation and effects are the same as those of the first embodiment.

In the present invention, the power source of the motor may be a battery housed in the attachment.

[Effects of the Invention] As described above, according to the present invention, a long distance from a rotation drive source provided outside the endoscope to the rotation treatment member at the distal end of the endoscope is connected by the rotation force transmission member to transmit the rotational force. This eliminates the need to perform this operation, so that the rotational force of the rotary drive source can be efficiently transmitted to the rotary treatment member, and the rotation of the transmission member does not pass through the insertion section, thereby preventing damage to the image guide and light guide due to rotational vibration. There is an effect that can be eliminated.

[Brief description of the drawings]

1 to 4 relate to a first embodiment of the device of the present invention,
1 is a cross-sectional view of a main part showing the distal end portion of an insertion portion of an endoscope and a treatment device, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. FIG. 4 is a schematic explanatory view showing the overall configuration and an example of use, FIG. 5 is a cross-sectional view of a main part showing a modification of the first embodiment of the present invention, and FIG. FIG. 7 is a sectional view of an essential part according to a second embodiment of the present invention, FIG. 7 is a sectional view of an essential part showing a fourth embodiment of the present invention, FIG. FIG. 10 is a cross-sectional view of a main part showing a modification of the fourth embodiment, and FIG. 10 is a cross-sectional view of a main part showing a fifth embodiment of the device of the present invention. 8 ... Endoscope insertion part, 12 ... Tip constituent part 21 ... Treatment device 23 ... Attachment body 24 ... Motor, 26 ... Whetstone

──────────────────────────────────────────────────続 き Continuing on the front page (72) Eiichi Fuse 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside O-limpus Optical Co., Ltd. (72) Masaaki Hayashi 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Katsuya Suzuki, Inventor Katsuya 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Ichiro Takahashi 2-43-2, Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (72) Minoru Okada, Inventor Minoru 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside Olympus Optical Co., Ltd. (72) Tsutomu Yamamoto 2-43-2, Hatagaya, Shibuya-ku, Tokyo O-Limpus Optics Co., Ltd. (72) Inventor Tetsushi Tagami 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Industrial Co., Ltd. (72) Inventor Masahiro Kumakura 2-43-2 Hatagaya, Shibuya-ku, Tokyo Inside the Olympus Optical Co., Ltd. (56) References JP-A-58-162924 (JP, A) JP-A-1- 239517 (JP, A) JP-A-60-59215 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) G02B 23/24-23/26

Claims (1)

(57) [Claims] 1. An attachment having one or more lenses detachably attached to a distal end portion of an endoscope insertion portion, a rotation drive source provided on the attachment so as to be in parallel with the lenses, A treatment device for an endoscope, comprising: a rotation treatment member provided on the attachment, wherein the rotation force is transmitted from the rotation drive source by a rigid member.