JPH02131739A - Endoscope device - Google Patents

Abstract

PURPOSE:To directly bring an observation image to visual observation with the naked eye at an eyepiece part so that a television image can be obtained without installing an external television camera in the eyepiece part by providing a second image guide fiber for retransmitting the observation image transmitted to an operating part body between the image pickup system concerned of a light source device and the operating part body, and providing it in a cord. CONSTITUTION:When a mount 19 of a branch universal cord 16 is not installed in an endoscope eyepiece part 9, an observation image can be brought to visual observation through the eyepiece part 9 as a regular fiber endoscope. On the other hand, when the mount 19 of the branch universal cord 16 is installed in the eyepiece part 9, the observation image formed on cover glass 8 is formed on and end part of a second image guide fiber 17 by an image forming lens 20 in the mount 19, transmitted through the fiber 17 and reaches an end part of an image guide connector 18, formed of an image area of a solid-state image pickup element 25 by an image pickup optical system 24 of alight source device 21, and brought to photoelectric conversion to a video signal.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fiber endoscope, and in particular to a decoy image device built into a light source device that transmits an observed image from the eyepiece or its vicinity via an image guide fiber. %Q? This invention relates to an improved endoscopic U device that allows television images to be obtained without straining.

[Problems to be solved by the prior art and the invention] In recent years, by inserting an elongated insertion section into a body cavity, it is possible to observe internal organs in the body cavity, and to insert it into the groin channel as necessary. 2. Description of the Related Art Endoscopes that can perform various therapeutic procedures using a treatment instrument inserted therethrough are widely used.

In addition, a charge-coupled device (
Various video endoscopes equipped with solid-state imaging devices such as COD have also been proposed. Furthermore, an external television camera is attached to the eyepiece of the Noahiber endoscope so that television images can be obtained even though it is a fiber endoscope.

However, in the configuration in which an external television camera is attached to the eyepiece of the fiber optic endoscope, the weight of the endoscope operation part increases, which impairs operability. Since an external television camera is electrically connected to the video processor, measures must be taken to prevent leakage current.

The present invention has been made in view of these circumstances, and allows the observation image transmitted from the distal end side of the insertion section via the image guide fiber to be viewed directly with the naked eye at the eyepiece section, and the observation image The image is roughly transmitted to the R image system installed in the light source device through a second image guide fiber, and a television image can be obtained without attaching an external television camera to the eyepiece. To provide an endoscope device which does not cause deterioration of operability due to an increase in heavy J of an eyepiece part and which does not require measures against leakage current due to attachment of an external television camera. It is an object.

[Means for Solving the Problem 1 and Their Effects] In order to achieve the above-mentioned object, the VL device according to the present invention provides an image guide fiber from the distal end side of the insertion section extending forward from the operation section main body having the eyepiece section. At the same time, the observed image is transmitted to the eyepiece, and the separate light source device and the main body of the operating section are connected by a cord with a light guide fiber inside, and then from the main body of the operating section to the distal end of the insertion section. In step b, in which a light guide fiber is provided internally, an imaging system is provided in the light source device, and between the imaging system and the operating unit main body, the observation image transmitted to the operating unit main body is reproduced through the image guide fiber. A second image guiding fiber is provided for transmission, and the second image guiding fiber is disposed within the cord.

With this configuration, an observation image is transmitted to the eyepiece section of the operation section main body through an image guide fiber, while an observation image transmitted to this operation section main body is transmitted to the eyepiece section of the operation section main body through a second image guide fiber. It is retransmitted to the imaging system and photoelectrically converted,
A TV image (signal) can be obtained.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an explanatory diagram that does not show the first embodiment of the present invention.

In this figure, reference numeral 1 denotes a fiber endoscope, which has an m-long insertion section 3 extending forward from the operation section main body 2 on the hand side, and an objective optical system 5 disposed within the distal end 4 of this insertion section 3. At the same time, the incident end surface of the image guide fiber 6 inserted from the operation section main body 2 to the distal end section 4 of the insertion section 3 is placed at a position i? ? The output end face of the image guide fiber 6 is positioned at an eyepiece section 9 which is provided on the operation section main body 2 and is composed of an eyepiece lens 7 and a cover glass 8. Furthermore, the endoscope 1 has a light guide fiber 10 installed therein, extending from the operating section main shaft 2 to the insertion section 3, and running approximately parallel to the image guide fiber 6. 3 at the tip 4 ['. It faces the light distribution lens 11 and the cover glass 12. The light guide fiber 10 is inserted into the universal cord 13 extending from the operation part main holiday 2 to the side of the wood holiday 2] to the connector main body 14
or the light guide connector 15.

On the other hand, the universal cord 13 is branched on the endoscope 1 side, and a second image guide fiber 17 is inserted into this branched universal cord 16 or universal cord 13. The second image guide fiber 17 is connected to a connector main connector 14 or an image guide connector 18. Further, a mount 19 that can be detachably attached to the eyepiece part 9 of the endoscope 1 is provided at the end of the branch 1 and 16, and the second image guide fiber 17 is attached to this mount 19. An end portion and an imaging lens 20 are provided.

When the mount 19 is attached to the eyepiece 9, this brass lens 20 causes the vA image formed on the cover glass 8 of the eyepiece 9 to be imaged on the end of the second image guide fiber 17. It's for b.

The light guide connector 15 and the image guide connector 18 are dark enough to be connected to the heat source device 21.

This light source device 21 includes a light beam unit 23 emitted from a light source 22 and a condensing lens 22a, and a dancing image system 26 consisting of an 11υ image optical system 24, a fixed-resistance-carrying image probe 25, etc. In this case, a video 1-rotary tree 27 is installed which is connected in a thunder-like manner to the solidly resting statue of Nagisa 25. The video A processor 27 is connected to a monitor 29 via a cable 28, and is configured to display observed images.

With this configuration, when the mount 19 of the branched universal cord 16 is not attached to the endoscope eyepiece 9, the observed image can be viewed through the eyepiece 9 as a normal fiber endoscope. On the other hand, when the mount 19 of the branched conniversal cord 16 is mounted on the eyepiece 9, the cover glass 8
The observation image formed on the mount 19 is focused on the end of the second image guide fiber 17 by the imaging lens 20 , and is transmitted through the fiber 17 to the end of the image guide connector 18 and then connected to the light source device 21 . dancing image optical system 24
An image is formed on the image area of the solid image sensor 25 by
It is photoelectrically converted into a video signal. The video signal converted by the solid-state N-image converter 25 is processed by a video processor 27 and displayed on a t-monitor 29.

FIG. 2 is an explanatory diagram of main parts showing a second embodiment of the present invention.

In this embodiment, instead of branching the branch universal cord 16 for the second image guide fiber 17 from the universal first cord 13 as in the first embodiment, the light guide fiber is inserted into the single universal cord 13. 1
0 and the second image guide fiber 17 are arranged in 01 stages. The second image guide fiber 17 is
The operating portion is bent in the direction of the eyepiece 9lj within the main cover 2, and the end surface protrudes near the eyepiece 9. On the other hand, a mount 31 having a built-in mirror 30 can be removably attached to the eyepiece 9, and when the mount 31 is attached to the eyepiece 9, the image guide Noah 6 comes out. }1 end, eyepiece 7, cover glass 8, mount 31
mirror 30 and second image guide fiber 17
A cover glass 32 is placed inside the eyepiece section 9 on the optical axis connecting the ends of the
An imaging lens 33 is provided, and the observation image transmitted to the eyepiece 9 through the image guide fiber 6 is transmitted through the second image guide fiber 17, and the first embodiment (not shown) is transferred to the same light source equipment 20. It is designed to be transmitted to the image system 26 of .

Therefore, if the mount 31 is not attached to the eyepiece 9, it can be used as a normal fiber optic mirror and the observed image can be viewed visually through the eyepiece 9, and if the mount 31 is attached to the eyepiece 9, the observation image can be viewed using the eyepiece 9. The observed image is transmitted to the m-image system 26 via the second image guide fiber 17. This second
The other configurations, functions, and effects of this embodiment are the same as those of the first embodiment.

FIG. 3 is an explanatory view of the main part of the curved example of the second embodiment.

This modification is different from the embodiment shown in FIG. 2, in which the mount that shifts the mirror to the right is attached to and detached from the eyepiece, allowing the eyepiece to be opened by the eyepiece 9. [The system is designed to switch between observation and observation using a monitor by rotating a mirror 34 built into the eyepiece section 9 of the endoscope.

FIG. 4 is an explanatory view of the main parts of a third embodiment of the present invention.

In this embodiment, a half mirror 35 is used as the rotating mirror of the example of the food shape shown in FIG. According to this configuration, visual observation using the eyepiece 9 and observation on the monitor can be performed simultaneously. The other configurations and effects are the same as in the first embodiment.

[Effect] As explained above, according to the present invention, the observation image transmitted from the distal end side of the insertion section via the image guide fiber can be viewed directly with the naked eye at the eyepiece section, and this observation image is further transmitted to the imaging system installed in the light source device through the second image guide fiber, and a television image can be obtained without attaching an external television camera to the eyepiece. There is no problem that ΦM of the part increases and deterioration of the operation condition occurs, and furthermore, there is an effect that there is no need to take measures against leakage current caused by attaching an external television camera.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the first embodiment of the present invention, Fig. 2 is an explanatory diagram showing the second embodiment, and Fig. 3 is an explanatory diagram showing the main parts of the second embodiment. 4A and 4B are explanatory diagrams of the main parts of the third embodiment. 1...Fiber endoscope 2...Operation unit main body 3.
...Insertion section 6...Image guide fiber 9...Eyepiece section 10...Light guide fiber 13...Universal] Door 17...Second image guide fiber 20...Light source device 26... ...Glema image system Figure 4

Claims (1)

[Claims] An observation image is transmitted to the eyepiece using an image guide fiber from the distal end of the insertion section that extends forward from the operation unit main body, which has an eyepiece, and a light guide connects a separate light source device and the operation unit main body. Connect with a cord with internal fiber,
Furthermore, in the device in which a light guide fiber is installed internally from the operating section main body to the distal end side of the insertion section, an imaging system is provided in the light source device, and the image guide fiber is connected to the operating section between the imaging system and the operating section main body. An endoscope apparatus characterized in that a second image guide fiber is provided for retransmitting an observation image transmitted to the main body, and the second image guide fiber is installed inside the cord.