JPH01221717A - Endoscope device - Google Patents

Abstract

PURPOSE:To avoid exposure of a conductor connecting a device inside an adapter with an external device except its inserting section so as to prevent disconnection of the conductor by providing electrical connecting means which can electrically connect the device in the adapter and conductor at the adapter and the leading end section. CONSTITUTION:When the adapter main body 51 of an adapter 50 is connected with a leading end main body 14, the electric contact 36 of the leading end main body 14 is electrically connected with the electric contact 64 of the adapter main body 51 and the motor 68 of the adapter 50 is connected with a rotation controller through conductor 71, the electric contacts 64 and 36, a conductor 37, a connector, and a signal cable. Therefore, the conductor 71 for supplying electric power to the motor 68 of the adapter 50 is not exposed to the outside except its inserting section and, as a result, its disconnection can be prevented and the inserted property of the inserting section is not spoiled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endoscope device in which various adapters can be detachably attached to the distal end of an insertion section.

[Prior Art] In recent years, medical treatments have become available that allow the observation of organs within a body cavity by inserting an elongated insertion section into a body cavity, and the use of a treatment instrument inserted into a treatment instrument channel to perform various treatments as necessary. endoscopes are widely used. Furthermore, in the industrial field, industrial endoscopes that can observe and inspect the interiors of boilers, turbines, engines, chemical plants, etc. are widely used.

By the way, some of the endoscopes described above are capable of changing the viewing angle, viewing direction, etc. by detachably attaching an adapter to the distal end of the insertion section. For example, Japanese Unexamined Patent Publication No. 58-216212 discloses an endoscope device in which a rotary field-of-view conversion adapter having a built-in drive source can be detachably attached to the distal end of an insertion portion. In such an endoscope device, a power source (battery) for driving a drive source such as a motor in the adapter is built in the adapter, or as shown in the above-mentioned Japanese Patent Application Laid-Open No. 58-216212. In addition, the conductive wire for supplying power to the drive source within the adapter was extending directly from the adapter to the outside of the endoscope device.

[Problems to be Solved by the Invention] However, as described above, for example, if a power source (battery) for driving the drive source built into the rotary field-of-view conversion adapter is built into the adapter, When observing the inside of a tube, it was not possible to stop the drive source for rotating the rotary visual field conversion optical system or change the rotation speed. Further, since the power supply is built-in, there is a problem that the adapter becomes large in size.

Additionally, if a conductor for controlling the drive source is provided directly from the adapter to the outside of the endoscope device, it is possible to control the rotation of the rotary visual field conversion optical system during observation. , since the conducting wire and the object to be observed come into contact, there is a risk of wire breakage. In addition, when inserting into an object to be observed, in addition to problems such as poor insertion performance due to the 341 wire getting caught in the object to be observed, etc.
m) In endoscope devices, the length of the conductor coming out of the adapter is long, and when the adapter is removed from the endoscope, the conductor gets in the way, making it difficult to store the adapter.

[Object of the Invention] The present invention has been made in view of the above circumstances, and provides an adapter having a device for exchanging power or signals with an external device, which can be detachably attached to the distal end of the insertion section of the endoscope body. Installation is possible as a family celebration! The purpose of the present invention is to provide an endoscope device in which there is no risk of disconnection of the conductor connecting the device in the adapter and an external device, and the insertability of the insertion section and the storability of the adapter are not impaired. .

[Means for Solving the Problems] The endoscope device of the present invention includes an endoscope body in which an observation window is provided at the distal end of an elongated insertion section, and can be detachably attached to the distal end of the insertion section. and an adapter having a device for transmitting and receiving power or signals to and from an external device, wherein a conductive wire to be connected to the external device is inserted into the insertion portion, and a conductive wire connected to the external device is inserted between the adapter and the distal end portion. , an electrical connection means is provided that can electrically connect the device in the adapter and the conductor in the insertion section.

[Function] In the present invention, the device within the adapter is connected to the conductive wire inserted into the insertion section via the electrical connection means provided on the adapter and the distal end of the insertion section, and is further connected to the conductor through the conductor. connected to an external device.

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

1 and 2 relate to a first embodiment of the present invention, FIG. 1 is a cross-sectional view showing the endoscope tip and adapter, and FIG. 2 is a perspective view showing the entire endoscope device. be.

As shown in FIG. 2, the endoscopic IQ device 1 of this embodiment includes an elongated and flexible insertion section 2 and a winding drum unit 3 for winding up the insertion section 2. 2 has its base side fixed to the winding drum 4 of the winding drum unit 1-3, and is wound and stored on this drum 4.

The endoscope device 1 also includes a light source device 41 separate from the winding drum unit 3, a video processor 42, a monitor 43 connected to the video processor 42, and a rotation side m+ device 44 as an external device. It is equipped with

The drum 4 is provided with rotary shaft portions (not shown) at both ends in the direction of the rotary shaft, and the rotary shaft portions are rotatably supported by a bearing portion 6 . Between the two wheel receivers 6, there is a
Leg-shaped support pipes 7 that rotatably support the drum 4
．． 7 is installed, and a handle 8 for transporting the drum 4 is installed on the upper side.

The insertion section 2 has a flexible tube 11 with a
It is constructed by continuously arranging hard tip portions 12. In addition, a rotary field of view conversion adapter (
Hereinafter, an adapter 1°) 50 can be detachably attached.

The tip portion 12 and the adapter 50 are constructed as shown in FIG.

The tip 12% includes a hard tip main body 14, and the tip main body 14 has a section parallel to the longitudinal direction of the insertion section 2.
An observation hole 15 and an illumination hole 16 are formed. An objective lens system 18 is attached to the observation hole 15 . At the rear end of the tip main body 14, an optical rod 20. A first prism 21 having a sloped rear end surface and a second prism 22 having a wedge shape are joined in this order.

Incidentally, the second prism 22 is joined to the sloped surface of the rear end of the first prism 21 so that the thin part is on the tip side. A solid image carrier 25 is fixed to the sloped rear end surface of the second prism 22 so that its imaging surface is inclined with respect to the longitudinal direction of the insertion section 2. The solid-state image carrier 25 is fixed on a flexible substrate 26, and the flexible substrate 26 includes electronic components 27.
has been implemented. Further, a signal line 28 is connected to the flexible substrate 26, and this signal line 28 is inserted into the flexible substrate 111, extended from the base end of the insertion section 2, and introduced into the drum 4. has been done. This signal 1!1
128, for example, is inserted into one rotating shaft portion via a slip ring (not shown) provided in the drum 4, inserted into the handle 8 from one bearing portion 6, and then inserted into the handle 8 from the other bearing portion 6. It has been derived. Furthermore, this signal line 28
is inserted into a signal line cable 29 extending from the side of the bearing section 6, and connected to a signal connector 30 provided at an end of the signal line cable 29. This signal connector 30 is configured to be detachably connected to a video processor 42 that performs signal processing for the solid-state image sensor 25.

A light distribution lens 31 is provided in the illumination through hole 16, and a light guide fiber 32 is connected to the rear end of the light distribution lens 31. The light guide fiber 32 is inserted into the flexible tube 11, extended from the base end of the insertion section 2, and introduced into the drum 4.

The light guide fiber 32 is inserted into the rotating shaft portion on the side where the signal line cable 29 is extended, and is extended from the bearing portion 6. A light source connector 34 is inserted into the connecting cable 33 having a light source and is provided at the end of the connecting cable 33.
It is connected to the. This light source connector 34 is designed to be detachably connected to the light source device 41.

Note that the interior of the drum 4 and the light source connector 34v
The detailed structure of
This is shown in the specification of the patent application filed on January 26th.

In addition, for example, rod-shaped electrical contacts 36 are fixed to two locations of the distal end body 14, for example, by adhesive, for example, along the longitudinal direction of the insertion portion 2 via a red-resistant member 35. The distal end of the electrical contact 36 slightly protrudes from the distal end surface of the distal end main body 14. Further, the electrical contact 3
A wire 11Q37 is connected to the rear end of the drum 4 by, for example, soldering. has been introduced within. This conducting wire 37 is provided on the side of the bearing portion 6 on the side where the signal line cable 29 and the connection cable 33 are extended, for example, via a slip ring (not shown) installed in the drum 4. The connector 38 is connected to the connector 38 shown in FIG. A signal cable 39 connected to the rotation control device 44 is connected to this connector 38.

On the other hand, the adapter 50 includes a substantially cylindrical adapter body 51 that is detachably connected to the distal end side of the distal end portion 12;
A motor section 53 is connected to the front side of this adapter body 51 via, for example, two wooden vibrator-like connecting members 52 and 52.
It is equipped with The connecting members 52.52 are arranged at positions corresponding to the electrical contacts 36 provided on the tip main body 14.

The adapter body 51 has an observation hole 55 and an illumination hole 56 at positions 1" corresponding to the observation hole 15 and the illumination hole 16 of the tip body 14, respectively, on the insertion part 2.
It is formed parallel to the longitudinal direction of. The observation hole 5
A lens system 58, which together with the objective lens system 18 constitutes an imaging optical system, is attached to the lens frame 5, with a portion thereof being held by a lens frame 57. Further, a light distribution lens system 59 is attached to the illumination through hole 56.

The adapter body 51 also has an electrical contact housing 6 that communicates with the hollow portion of the connecting member 52 and is located at a position corresponding to the electrical contact 36 provided on the tip body 14.
1 is provided. The electrical contact storage portion 61 includes a first insulating member 62 having a substantially cylindrical shape and a second insulating member having a substantially cylindrical shape from the distal end side.
An insulating member 63 is fixed along the longitudinal direction of the insertion portion 2, for example by adhesive. A substantially rod-shaped electrical contact 64 is housed within the insulating member 62,63. This electric contact 64 has a flange portion 64a with an enlarged diameter formed in the middle in the axial direction, and this flange portion 64a is connected to the first insulating member 6.
2 and a stepped portion formed on the rear end side of the second insulating member 63. Further, the flange portion 6
4a and the rear end surface of the first insulating member 62,
A spring 65 is provided to bias the electrical contact 64 toward the rear end. When the adapter body 51 is connected to the tip body 14, the rear end of the electrical contact 64 comes into contact with the tip of the electrical contact 36 of the tip body 14, and the electrical contact 36. 64 is electrically connected.

The rear end side of the adapter body 51 is formed into a cylindrical shape, and this cylindrical portion 75 is adapted to be fitted onto the tip body 14. A female thread is formed at the rear end of this cylindrical portion 75 . On the other hand, a connecting ring 7G is rotatably fitted loosely on the outer circumferential portion of the tip body 14, and an M thread is provided on the tip side of the connecting ring 76 to be screwed into the female thread of the cylindrical portion 75. ing. The adapter main body 51 is fixed to the tip main body 14 by screwing the female thread and the male thread together.

The motor section 53 includes a cylindrical motor case 66 whose rear end is closed, and a lid 67 that closes an opening at the tip of the motor case 66. A motor 68 is installed inside the motor case 66. It is stored. A rotating shaft 68a of the motor 68 is arranged parallel to the longitudinal direction of the insertion section 2, and projects rearward through the rear end surface of the motor case 66. And this rotation? *68 A cylindrical mirror 70 rotated by the motor 68 is attached. The cylindrical mirror 70 is located in a space between the adapter body 51 and the motor section 53 and in front of the lens system 58 of the adapter body 51 on the optical axis. Further, the reflective surface 70a of the cylindrical mirror 70 is inclined, for example, approximately 45 degrees with respect to the longitudinal direction of the insertion portion 2. The reflective surface 70a of this cylindrical mirror 70
Through the lens system 58 of the adapter main body 51, light in a direction substantially perpendicular to the longitudinal direction of the insertion section 2, that is, in a lateral field of view, enters the lens system 58 of the adapter main body 51. In addition, the motor 68
For example, two conductive wires 71 connected to the connecting member 5
2 and is connected to the rear end of the electrical contact 64 of the adapter body 51 by, for example, soldering. The motor 68 is connected to the conductive wire 71. m air contact 64°36, conductor 37. Connector 38. It is connected to a rotation control device 44 via a signal cable 39, and is supplied with electric power from the rotation control device 44 to control the rotation. Further, as the motor 68 rotates, the cylindrical mirror 70 is rotated, and the viewing direction of the lens system 58 of the adapter body 51 is changed.

Next, the operation of this embodiment configured as above will be explained.

In this embodiment, when observing with the adapter 50 capable of changing the field of view, the light source connector 34 provided at the end of the connection cable 33 is connected to the light source device 41, and the light source connector 34 provided at the end of the connection cable 33 is connected to the light source device 41. [Connector 30 for pulled signals
is connected to the video processor 42, and a signal cable 39 connected to the rotation control device 44 is connected to the connector 38.

On the other hand, an adapter 50 is connected to the distal end 12 of the insertion section 2.

The illumination light emitted from the light source device 41 is input to the input end of the light guide fiber 32 of the light source connector 34. This illumination light enters the tip 12 via the light guide fiber 32, is emitted from the tip surface, and is emitted from the light distribution lens 32 of the tip main body 14. The light passes through the light distribution lens system 59 of the adapter body 51 and is irradiated onto the subject.

The return light from the subject due to this illumination light is transmitted to the cylindrical mirror 7
0 and enters the lens system 58 of the adapter body 51, and enters the objective lens system 1 of the tip body 14.
8, the image is formed onto the solid-state image element 25. The output signal of this solid-state image carrier 25 is transmitted through a signal line 28. A slip ring (not shown) inside the drum 4 and a signal line inside the signal line cable 29.

The signal is input to the video processor 42 via the signal connector 30, and the video processor 42 processes the video signal. A video signal generated by this video processor 42 is input to a monitor 43, and an observed image is displayed on this monitor 43.

Furthermore, by connecting the adapter body 51 of the adapter 50 to the tip body 14, the electrical contacts 36 of the tip body 14 and the electrical contacts 64 of the adapter body 51 are electrically connected. The motor 68 of the adapter 50 is connected to the conductor 7
1. Electrical contact 64°36, conductor 37. Connector 38. It is connected to a rotation control device 44 via a signal cable 39, and is supplied with electric power from the rotation control device 44 to control the rotation. By rotating this motor 968, the cylindrical mirror 70 is rotated, and the adapter main body 51
The visual field direction of the lens system 58, that is, the observation visual field direction is converted. For example, by rotating the motor 68 at a predetermined speed, the lateral field of view of the insertion section 2 can be continuously changed to N'6 while changing in the circumferential direction. Further, by stopping the motor 68 at an arbitrary position, it is possible to fix the viewing direction in an arbitrary direction.

As described above, according to this embodiment, the QJ wire 37 for supplying power to the motor 68 of the adapter 50 is inserted into the insertion portion 2, and this conductive wire 37 and the conductive wire 71 of the motor 68 are connected to each other at the distal end. Electrical contacts 3 provided on the main body 14 and the adapter main body 51
6. Since the connection is made through 64, adapter 5
The conductor for supplying power to the motor 68 of
It is not exposed to the outside, there is no risk of the conductor breaking, and the insertability of the insertion portion 2 is not impaired. Furthermore, the storability of the adapter 50 will not be impaired due to the conductor becoming a hindrance. Furthermore, since the rotation control device 44 that supplies power to the motor 68 and controls its rotation is provided separately from the adapter 50, the operator can easily control the visual field conversion at hand.

In this embodiment, the adapter body 51 and the motor section 5
3, a cylindrical transparent cover may be provided to protect the cylindrical mirror 70.

FIG. 3 is a side view showing an endoscope apparatus according to a second embodiment of the present invention.

The endoscope device of this embodiment includes an electronic endoscope 80 and a video processor 81 having a built-in light source device and video signal processing circuit.
and a monitor 43 connected to this video processor 81.
and a rotation control device 44. The endoscope 80
includes an elongated, e.g. flexible insertion section 82, and this insertion section 8.
A large-diameter operating section 83 is connected to the rear end of the 2, and a universal cord 84 extends laterally from the operating section 83. A connector 85 that can be freely connected to the video processor 81 is provided at the end of the unipartial cord 84. At the distal end side of the insertion portion 82, a hard distal end portion 86 and a bendable curved portion 87 connected to the rear side of the distal end portion 86 are provided.

The operation section 83 is provided with a bending operation knob 88 for bending the bending section 87 . In addition, the operation section 8
3 is provided with a connector 89 to which the signal cable 39 connected to the rotation control device 21-44 can be detachably connected.

The configuration of the insertion section 82 is similar to the insertion section 2 of the first embodiment. That is, the light guide fiber 32 is inserted into the insertion portion 2, and the light guide fiber 3
The base side of 2 is inserted into the universal cord 84 and connected to the connector 85. Illumination light from a light source device (not shown) in the video processor 81 connected via this connector 85 is incident. Further, the tip portion 86 is provided with an objective lens system 18 and a solid-state image carrier 25 disposed at the imaging position of the objective lens system 18, and a signal connected to the solid-state imaging cable 25 is provided. The line 28 is connected to the insertion portion 82.
It is inserted into the operating section 83 and the universal cord 84 and connected to the connector 85. Then, it is connected to a video signal processing circuit within the video processor 81 via this connector 85.

Further, as in the first embodiment, a rotary field-of-view conversion adapter 50 is detachably attached to the distal end portion 86. Electrical contact 3 provided on this tip 86
The conductive wire 37 connected to 6 is inserted into the entry insertion part 82 and connected to an adapter 89 provided on the operation part 83.

The other functions and effects of the configuration 9 are the same as those of the first embodiment.

In the first and second embodiments described above, the drum 4 or the operating section 83 is provided with the connectors 38 and 89.
For example, the function of the rotation control device 44 may be built into the light source device 41 or the video processor 42.81 and connected to the electrical contact 36. Connect the conductor 37 to the connecting cable 33
．． Signal line cable 29. or universal code 84
Alternatively, the light source device 41 or the video processor 42.81 may be directly connected to the light source device 41 or the video processor 42.81.

Figures 4 and 5 relate to a third embodiment of the present invention; Figure 4 is a sectional view of the endoscope tip and adapter, and Figure 5 is a front view of the adapter excluding the cover member. be.

In this embodiment, an auxiliary light source adapter 90 is detachably attached to the distal end portion 12 of the insertion section 2, which has the same configuration as the first embodiment.

In the auxiliary light source adapter 90, a disk-shaped substrate 91 is connected to the front side of the adapter body 51, which is similar to the first embodiment, via a connecting member 52.

The central portion of the substrate 91 is cut into a circular shape, for example, and a transparent plate 92 is fitted therein. For example, three lamps 93 are attached to the front surface of the substrate 91 along the circumferential direction as shown in FIG. Further, the lamp 93 is covered with a substantially hemispherical transparent cover member 94 attached to the front side of the substrate 91. A power supply conductive wire 95 connected to the lamp 93 is inserted into the hollow portion of the connecting member 52 and connected to the electrical contact 64 of the adapter body 51 by, for example, soldering.

In this embodiment, the conductive wire 37 connected to the electrical contact 36 of the tip body 14 connected to the electrical contact 64 is connected to a power source (not shown) that supplies power to the lamp 93 instead of the rotation control device 44. It is now possible to do so. The lamp 93 is supplied with power from the power source,
It is designed to emit auxiliary illumination light.

The other functions and effects of the configuration 0 are the same as those of the first embodiment.

In addition, in this embodiment, by using a control device that can control the brightness of the lamp 93 as the power source that supplies power to the lamp 93, the brightness of the auxiliary illumination light can be controlled at the hand side. .

6 and 7 relate to a fourth embodiment of the present invention, FIG. 6 is a sectional view showing the endoscope tip and an adapter, and FIG. 7 is an exploded perspective view showing the endoscope tip and the adapter. It is.

The overall configuration of the endoscope apparatus of this embodiment is schematically shown in FIG. 2, similar to the first embodiment. However, in this embodiment, a brightness control device for the auxiliary lighting device is provided as an external device instead of the rotation control device 44, and a signal cable 39 connected to this brightness control device is connected to the connector 38. It has become so.

As shown in FIG. 6, for example, an optical adapter 1 for far-point object observation is attached to the distal end 12 of the insertion section 2 in this embodiment.
20 and an auxiliary lighting device 130 serving as an adapter having a device for exchanging power or signals with an external device are detachably attached.

The distal end 12 in this embodiment has a rigid distal end main body 1.
01, and a screw 103 at the rear end of this tip body 101.
The cylindrical connecting member 102 is connected to the cylindrical connecting member 102 .

An observation hole 15 and an illumination hole 16 are formed in the tip main body 101 in parallel to the longitudinal direction of the insertion portion 2 . A cover glass 104 is attached to the observation hole 15 . Furthermore, a movable frame 105 is disposed inside the tip main body 101 so as to be movable in the axial direction. The movable frame 105 includes an objective lens system 18 similar to that of the first embodiment. Optical rod 20. First prism 21. Second
A prism 22 and a solid-state image sensor 25 are held. This solid-state imaging element 25 is fixed on a flexible substrate 26, and an electronic component 27 is mounted on this flexible substrate 26. Further, a signal line 28 is connected to the flexible closing plate 26, and this signal line 28 is inserted into the flexible tube 11, extended from the parking end of the insertion part 20, and inserted into the drum 4. !There are 7 people.

Similar to the first embodiment, the signal line 28 is inserted into a signal line cable 29 and connected to a signal connector 30 provided at the end of the signal line cable 29. This signal connector 30 is configured to be detachably connected to a video processor 42 that performs signal processing for the solid-state image sensor 25.

A guide hole 108 parallel to the longitudinal direction of the insertion section 2 is provided at the front end of the moving frame 105.
A guide rod 109 is inserted into the front end of the tip body 101 so as to protrude into the interior of the tip body 101 . The movable frame 105 can move back and forth along the guide rod 109. Also,
A pin 111 is screwed into the rear end of the moving frame 105 so as to protrude in the radial direction of the insertion section 2. This pin 111 is fitted with a long hole 112 provided in the tip body 101 along the longitudinal direction of the insertion portion 2 . A cam ring 114 is rotatably fitted in a position on the outer periphery of the tip main body 101 and outside the elongated hole 112. This cam ring 114 has a cam hole that is inclined with respect to the longitudinal direction of the insertion portion 2, and the pin 111 is engaged with this cam hole. Then, by rotating the cam ring 114, the pin 111 is moved into the elongated hole 11.
2, the movable frame 105 moves back and forth while moving along the cam hole. As described above, in this embodiment, focus adjustment can be performed by moving the movable frame 105 holding the objective lens system 18'@.

In addition, the light distribution lens 31 is provided in the illumination through hole 16 for VR.
A light guide fiber 32 is connected to the rear end of the light distribution lens 31. Similar to the first embodiment, the light guide fiber 32 is inserted into the flexible tube 11, extended from the base end of the insertion section 2, introduced into the drum 4, and further inserted into the bearing section 6. The light source is inserted into a connection cable 33 extending from the side thereof, and is connected to a light source connector 34.

Further, the rear end side of the connecting member 102 is formed to have a slightly smaller diameter, and the flexible tube 11 is connected to the rear end of this small diameter portion 102a with a screw 115.

In this embodiment, a rod-shaped electrical contact 116 having an enlarged-diameter flange portion 116a formed at one end is fixed to the small diameter portion 102a of the connecting member 102 via an insulating member 117, for example by adhesive. This electrical contact 116 is arranged along a direction perpendicular to the longitudinal direction of the insertion portion 2 so that the flange portion 116a is on the outer peripheral side, and the end surface of the seven flange portions 116a is located on the small diameter of the connection member 102. Part 10
It is arranged on the same plane as the outer peripheral surface of 2a. A conductive wire 118 is connected to the electrical contact 116, for example, by soldering. The conducting wire 118 is inserted into the flexible tube 11, extended from the base end of the insertion portion 2, and introduced into the drum 4. This conducting wire 118 is connected, for example, to a connector 38 provided on the side of the bearing portion 6 on the side where the signal line cable 29 and the connection cable 33 are extended via a slip ring (not shown) provided in the drum 4. It is connected to the. This connector 38 has a rotation control device 4
Three signal cables connected to the brightness control device of the auxiliary lighting device provided instead of the signal cable 4 are connected.

On the other hand, the optical adapter 120 includes a substantially cylindrical adapter body 121 that is detachably connected to the distal end side of the distal end portion 12.
It is equipped with This adapter body 121 has observation through holes 55 and 55, respectively, at positions corresponding to the observation through holes 15 and illumination through holes 16 of the tip body 101. An illumination through hole 56 is formed parallel to the longitudinal direction of the insertion section 2.

A lens system 58, which together with the objective lens system 18 constitutes an imaging optical system, is mounted in the observation through-hole 55, with a portion thereof held by a lens frame 57. Further, a light distribution lens system 59 is attached to the illumination through hole 56.

The rear end side of the adapter body 121 is formed into a cylindrical shape, and this cylindrical portion 75 is fitted onto the tip body 101. A female thread is formed at the rear end of this cylindrical portion 75 .

On the other hand, a connecting ring 76 is rotatably fitted into the outer circumference of the tip main body 101, and a male thread that is screwed into the female thread of the cylindrical part 75 is provided on the tip side of the connecting ring 76. The adapter main body 121 is fixed to the tip main body 101 by screwing the female thread and the male thread together.

Further, the auxiliary illumination device 130 has a cylindrical main body 13 that is externally fitted onto the tip main body 101, as shown in FIG.
1, and a contact portion 13 connected to the rear end of this main body 131.
2. The contact portion 132 has two contact portion structures 132a and 132b formed by dividing a cylinder into two. The main body 131 has an inner diameter slightly larger than the outer diameter of the tip portion 12 with the optical adapter 120 connected, and the contact portion 132 has an inner diameter approximately equal to the outer diameter of the small diameter portion 102a of the connecting member 102. have. Further, the outer diameter of the main body 131 and the outer diameter of the contact portion 132 are approximately equal. When the auxiliary illumination device 130 is attached, the optical adapter 120 is attached to the tip portion 12 as shown in FIG.
A cylindrical middle ring 134 is fitted onto the outer circumference of the adapter body 121, and the main body 131 is fitted onto the middle ring 134 and screwed into the adapter body 121.

As shown in FIG. 6, a plurality of lamps 136 are arranged and built in the main body 131 along the radial direction. A hole for emitting illumination light is formed in front of the lamp 136 in the main body 131, and a cover glass 137 is attached to the front end of this hole. The lamp 136 includes:
Six wires 138 for power supply are connected, and this conductive wire 138 is led out from the rear end of the main body 131 and connected to the contact portion 1.
It has been introduced in 32.

On the other hand, in the contact portion 132, for example, a rod-shaped electric contact 141 is fixed, for example, by adhesive, at a position corresponding to the flange portion 116a of the electric contact 116 attached to the connection member 102. has been done.

One insulating member 142 has a cylindrical shape with one end closed, and is arranged on the inner peripheral surface of the contact portion 132 such that the closed end face faces the flange portion 116a of the electrical contact 116. . The other insulating portion 0143 is joined to the insulating member 142 so as to close the open end of the insulating member 142. And these insulating members 1
A cylindrical space is formed within 42.143. The electrical contact 141 is connected to the insulating member 142, 143.
The contact portion 132 is disposed perpendicularly to the longitudinal direction of the insertion portion 2, and one end protrudes from the inner circumferential surface of the contact portion 132 so as to be able to contact the electrical contact 116. Further, the electrical contact 141 includes the insulating member 142°1.
A flange portion 141a accommodated in the space within 43 is formed. This flange portion 141a and the insulating member 14
A spring 144 is interposed between the spring 144 and the
Accordingly, the electrical contact 141 is biased in a direction protruding from the inner circumferential surface of the contact portion 132. The other end of the electrical contact has a conductor 1! from the lamp 136! J138 is
For example, they are connected by soldering.

As shown in FIG. 7, contact portion structures 132a and 132b constituting the contact portion 132 are overlapped to form a cylindrical shape and are connected by screws 146 and 146.

Note that the electrical contacts 116 are provided, for example, in two symmetrical positions, and the electrical contacts 141 are connected to the contact portion structure 132.
One each is provided in a and 132b.

In this embodiment configured in this way, the tip portion 1
The auxiliary lighting device 130 is attached to the auxiliary lighting device 2 in the following manner.

With the contact portion structures 132a and 132b separated, the auxiliary lighting device 130 is fitted onto the tip portion 12 from the tip side,
The main body 13 is connected to this tip 12 via the middle ring 134.
Screw 1 together. Next, the electrical contact 116 on the tip portion 12 side
and electrical contact 1 on the contact portion 132 side of the auxiliary lighting device 130.
41 in contact with the contact portion structure 132a,
132b are overlapped, and the contact portion structures 132a; 132b are connected using screws 146, 146, and fixed to the connecting member 102 at the same time.

In this embodiment, from a brightness control device as an external device,
Signal cable 39. Connector 38. Conductive wire 118, electrical contacts 116, 141. Power is supplied to the lamp 136 of the auxiliary lighting device 130 via a conductor 138, and the brightness of the lamp 136 is controlled by the brightness control device.

Note that the contact portion 132 and the small diameter portion 102 of the connecting member 102
(a) may be provided with an engaging portion for mutual positioning.

The other functions and effects of the configuration 9 are the same as those of the first embodiment.

Note that this embodiment shows an example of an endoscope apparatus in which the winding drum unit 3 is located on the right side, similar to the first embodiment, but similarly to the second embodiment shown in FIG. 3, the insertion section 82 and The present invention can also be applied to an endoscope having an operation section 83, and an endoscope apparatus including a video filter 81 having a built-in light source device and a video signal processing circuit. In this case, in FIG. 3, a conductive wire 118 is connected to a connector 89 provided on the operating section 83, and the brightness control of the auxiliary lighting device is connected to the connector 89 instead of the rotation control j'II device 44. The device is connected.

FIG. 8 is a sectional view showing the endoscope tip and adapter in a fifth embodiment of the present invention.

This embodiment is an example of an endoscope that does not have a light guide fiber 32 for guiding illumination light from an illumination device.

As shown in FIG. 8, corresponding to the fact that the light guide fiber 32 is not provided, the distal end portion 12 of the endoscope is provided with the following:
The light distribution lens 31 in the fourth embodiment is not provided, and the optical adapter 120 connected to the tip portion 12 is not provided with the light distribution lens system 59.

In this embodiment, illumination is provided by an auxiliary lighting device 130.

Other functions and effects of Configuration 1 are the same as those of the fourth embodiment.

Note that the present invention is not limited to the above-mentioned embodiments; for example, the functions of the adapter attached to the distal end of the insertion section include:
Rotary viewing conversion, not limited to auxiliary lighting.

For example, a zoom adapter including a zoom lens and a drive means for moving the zoom lens is provided, and an electric contact for a drive control signal for the drive means is provided on the tip and the adapter. Also good.

Alternatively, a treatment adapter may be provided that includes an arm for gripping, etc., and a drive means for driving this arm, and an electrical contact for a drive control signal to the bamboo stick drive means may be provided on the tip and the adapter. good.

Alternatively, an adapter having various sensors may be provided, and an electrical contact may be provided on the tip end and the adapter for transmitting a signal from the sensor to a device on the hand side.

Alternatively, an adapter may be provided for a running wheel that automatically advances the tip in a pipe, etc., and an electric contact for a drive control signal for the running wheel may be provided on the tip and the adapter.

Furthermore, the tip portion is provided with multiple types of electrical contacts corresponding to multiple types of adapters so that various types of adapters such as those described above can be attached interchangeably, and can be used selectively depending on the adapter. You can also do it.

Furthermore, in each of the embodiments, an example of an electronic scope with a built-in solid-state image sensor in the tip was described, but the present invention transmits an image formed by an observation optical system to an eyepiece by an image guide, It can also be applied to a fiberscope or the like that allows observation with the naked eye from this eyepiece. Furthermore, the present invention can be applied not only to a soft inner JJA chain with a flexible insertion part, but also to a rigid endoscope with a rigid insertion part, and can be applied to both industrial and medical applications. can do.

[Effects of the Invention] As explained above, according to the present invention, a conductor to be connected to an external device is inserted into the insertion section, and a 5A position inside the adapter and a 5A position inside the insertion section are inserted between the adapter and the distal end. Since an electrical connection means that can electrically connect the conductor wire is provided, the conductor wire will not be exposed outside the insertion tube, there is no risk of disconnection of the conductor wire that connects the device inside the adapter and the external device, and the insertion tube can be easily connected. This has the effect of not impairing the ease of insertion or storage of the adapter.It also has the effect of allowing the operator to easily electrically control the adapter at hand during observation.

[Brief explanation of the drawing]

1 and 2 relate to a first embodiment of the present invention, in which FIG. 1 is a cross-sectional view showing the endoscope tip and an adapter, FIG. 2 is a perspective view showing the entire endoscope device, and FIG. 3 is a side view of the endoscope device according to the second embodiment of the present invention, FIGS. 4 and 5 are related to the third embodiment of the present invention, and FIG. 4 is a side view of the endoscope device according to the second embodiment of the present invention. FIG. 5 is a front view of the adapter excluding the cover member, FIGS. 6 and 7 relate to the fourth embodiment of the present invention, and FIG. 6 shows the endoscope tip and the adapter. FIG. 7 is an exploded perspective view showing an endoscope tip and an adapter, and FIG. 8 is a sectional view showing an endoscope tip and an adapter in a fifth embodiment of the present invention. 1... Endoscope device 2... Insertion section 12...
Tip part 14...Tip body 25...Solid state element 36...Electric contact 37...Conducting wire 50...Rotary visual field conversion adapter 51...Adapter body 53...Motor part 64・
...Electrical contact 68...Motor 70...Cylindrical mirror 71...Conductor Fig. 2 (Fig. 7)

Claims (1)

[Claims] An endoscope main body having an observation window provided at the distal end of an elongated insertion section, and an adapter that can be detachably attached to the distal end of the insertion section and has a device for transmitting and receiving power or signals to and from an external device. An endoscope apparatus comprising: a conductive wire connected to the external device is inserted into the insertion section, and a device within the adapter and a conductive wire within the insertion section are inserted between the adapter and the distal end. What is claimed is: 1. An endoscope apparatus characterized by being provided with an electrical connection means that can electrically connect.