JPS6327008B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope apparatus for observing, processing, etc. inside a living body cavity.

Generally, an endoscope device sends illumination light from a light source unit to a light guide inserted into the endoscope, and also transmits an image obtained at the end of the endoscope to the eyepiece via an image guide. It is now possible to observe the walls of body cavities, etc. When observing the lower gastrointestinal tract using an endoscope or performing pancreatic cholangiography, an X-ray fluoroscope is also used, and while comparing the X-ray fluoroscopic image and the directly observed image using the endoscope, appropriate processing is being carried out. Therefore, in this case, especially in pancreaticobiliary contrast observation, the operator must frequently move his/her eyes to both the endoscope eyepiece and the X-ray fluoroscope before and after contrast agent injection, making the observation extremely difficult. The drawback was that it was difficult.

This invention was made based on the above-mentioned circumstances, and its purpose is to make it possible to selectively observe multiple images such as X-ray fluoroscopic images at the same time without shifting the eye, and to provide an easy-to-observe system. The purpose of the present invention is to provide a viewing device.

The present invention will be described below based on an illustrated embodiment. In the figure, 1 is the main body of the endoscope, 1a is the operation part as the hand side part, 2 is the insertion part of the endoscope main body 1, 3 is the tip part, 4 is the eyepiece part, and 5 is the universal cord part. , this universal code part 5
is adapted to be detachably connected to the imaging device 7 via the connector section 6. Furthermore, a light guide 8, a first image guide 9, and a second image guide 10 are inserted into the endoscope body 1, and the light guide 8 has an endoscope installed in the imaging device 7. Illumination light is made to enter from a mirror light source lamp 11. In the case of this embodiment, the output end of the image guide 9 is connected to the endoscope main body 1.
It extends to the proximal operation section 1a and protrudes from the end surface of the connector section 6.

At the output end of the first image guide 9,
An image receiving optical system 12 is provided oppositely within the imaging device 7, and the image of the endoscope tip obtained by this image guide 9 is transmitted to the proximal side of the endoscope body 1 and transmitted to the image receiving optical system. 12 through the imaging unit 1
3 is now entered. This imaging unit 1
3, an image pickup tube may be used, or a solid-state image pickup device, so-called CCD, may be used. 14 indicates an objective optical system. Further, the imaging section 13 is electrically connected to a display control circuit 15, and the display control circuit 15 is connected to a display device 16 such as a CRT. The display control circuit 15 controls the brightness, color tone, etc. of the image provided to the display device 16, and also controls the directly captured image of the endoscope inputted from the imaging section 13 and the X-ray imaging device 20 described later.
It has a function of selectively switching the X-ray fluoroscopic image input from the display device 16 and displaying it on the display device 16.
Reference numeral 17 denotes an external display device used for viewing or general display, which displays the same display content as the display device 16 to the outside. This external display device 17
may be integrated with the imaging device 7.

The entrance end face of the second image guide 10 is arranged optically opposite the display surface of the display device 16 via the entrance optical system 18. The other end of the second image guide 10 is guided to the eyepiece section 4. 19 is an eyepiece optical system.

Further, an X-ray imaging device 20 is connected to the display control circuit 15 as an example of a device for obtaining a second image. 21 is an X-ray irradiation device, and these X-ray irradiation device 21 and X-ray imaging device 20
is arranged at a position where the vicinity of the endoscope tip 3 can be seen through.

Next, the operation of the endoscope apparatus having the above configuration will be explained. The light emitted from the light source lamp 11 passes through the light guide 8 and illuminates the body cavity wall A at the endoscope tip 3. The image of the body cavity wall A enters the objective optical system 14, passes through the first image guide 9, and is sent to the imaging device 7 side. The image is then input to the image pickup unit 13 via the image receiving optical system 12, and is image-processed by the display control circuit 15 to display the display devices 16, 17.
Display the statue on. The body cavity image projected on the display device 16 is taken into the second image guide 10 via the entrance optical system 18, and is imaged on the eyepiece optical system 19 at the eyepiece section 4. Therefore, the operator operates the endoscope main body 1 while observing through the eyepiece 4, and inserts the endoscope tip 3 into the pancreaticobiliary duct or other desired body cavity.

On the other hand, using the X-ray irradiation device 21 and the X-ray imaging device 20, a fluoroscopic image of the vicinity of the endoscope tip 3 is taken. This X-ray fluoroscopic image is input as an electrical signal from the X-ray imaging device 20 to the display control circuit 15, and the display control circuit 15 receives input from the X-ray imaging device 20 by switching operation by the operator. When the X
A perspective image by the line imaging device 20 is output to the display devices 16 and 17, and the image is transmitted to the eyepiece section 4.

Therefore, the operator can selectively view the fluoroscopic image while looking into the eyepiece 4, and is no longer required to frequently take his eyes away from the eyepiece to view the X-ray fluoroscope as in the past. Cumbersome operations are no longer necessary, and endoscopic examinations can be performed accurately and quickly. Moreover, since the observation image is indirectly projected onto the eyepiece 4 via the display device 16, the display control circuit 15 displays various data such as the patient's blood pressure and the insertion position of the tip of the endoscope. , display the insertion time, emphasize the outline of the image, partially enlarge it, modify the image, and even combine it with other images.
It becomes possible to perform various image processing such as selective display, and a wide variety of observations and treatments become possible.

In this embodiment, the second image is a fluoroscopic image using X-rays, but for example, an ultrasound or microwave image below the surface of the body cavity wall can be displayed on a display device, and can be directly viewed using an endoscope. Of course, it is also possible to perform comparative observation at the same time as the observed image.

As explained above, the present invention uses an observation light image transmitted from the tip of an endoscope transmitted via an image guide as a first image output signal by an imaging unit, and outputs a second image other than the observation light image. The output signals are selectively switched by a display control circuit and displayed on a display device. Therefore, the operator who operates this endoscope device can selectively switch and view many types of images on the same display device, making it easy to perform a variety of observations using multiple images. It is extremely effective in performing endoscopic examinations accurately and quickly.

[Brief explanation of the drawing]

The drawing is a schematic diagram of an endoscope apparatus showing an embodiment of the present invention. 1... Endoscope main body, 3... Tip part, 7... Imaging device, 9... Image guide, 13... Imaging unit,
16...Display device, 20...X-ray imaging device.

Claims (1)

[Scope of Claims] 1. An endoscope main body, an image guide inserted into the endoscope main body and transmitting an observation light image to an output end extending toward the proximal side of the endoscope main body; an imaging device to which the output end of the image guide can be detachably connected and which is separate from the endoscope body; and an imaging unit installed within the imaging device and facing the output end of the image guide. and,
a display control circuit installed in the imaging device and configured to select at least an output signal of a first image obtained by the imaging section and an output signal of a second image obtained by another device and switch to a display signal; and a display device that receives an output signal from the display control circuit and displays an observation image. 2. The endoscope according to claim 1, wherein the second image is an X-ray fluoroscopic image obtained by an X-ray imaging device that sees through the vicinity of the distal end of the endoscope. Device.