JPS6351691B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscopic image display device that uses a solid-state image pickup device to obtain an image of an area to be observed.

Conventional endoscopes generally use optical fibers or other optical transmission bodies to obtain endoscopic images, but as an alternative to such optical transmission bodies, solid-state imaging devices are used to obtain endoscopic images. A device for obtaining a mirror image has been developed by the applicant. In other words, this type of endoscope forms a subject image on a solid-state image sensor installed at the tip of the endoscope body, and reproduces and displays the image on a display device installed outside the body via a signal line. .

Incidentally, during endoscopic examination, in addition to such endoscopic images, it is sometimes necessary to use X-ray fluoroscopic images in combination to make a more accurate diagnosis.
However, when using a solid-state image sensor as the observation optical system, the
There was a problem in that the solid-state imaging device could no longer function properly due to radiation exposure, making it impossible to obtain endoscopic images during X-ray imaging.

The present invention has been made based on the above circumstances, and an object of the present invention is to provide an endoscopic image display device that can obtain an endoscopic image even during imaging using X-rays.

That is, this invention stores an image before X-ray irradiation in an endoscopic image storage device, reproduces the stored image immediately before X-ray irradiation during X-ray imaging, and views it simultaneously with the X-ray fluoroscopic image. It was made so that it could be done.

The present invention will be explained below with reference to an embodiment shown in the drawings. In the figure, reference numeral 1 indicates an endoscope main body, 2 an operating section of the endoscope main body 1, 3 a flexible and elongated insertion section, and 3a a distal end of the insertion section 3. A light guide 4 is provided at the distal end 3a as an illumination optical system that provides illumination light to the observed part A inside the body.
A light emitting end portion is provided. The light guide 4 is inserted into the insertion portion 3, passes through the universal cord 5, and is connected to the light source device 6. A connector 7 is detachably connected to the light source device 6.

Further, the distal end portion 3a is equipped with an observation optical system.
A solid-state image sensor 9 is provided inside the lens 8.
10 is a signal line connected to this solid-state image sensor 9. This signal line 10 is inserted through the insertion section 3 and the universal cord 5 in the same way as the light guide 4, and the cord 11 branches from the connector 7.
It is inserted inside. This signal line 10 is connected to a control device 12 via a signal line connector 12. And this control device 12
An image signal outputted from the image forming apparatus 1 is sent to an image mixer 14 via a switch 13 and displayed on a display 15. This display 15 displays an endoscopic image on one side of the display screen, and displays an X
It is configured to display a line perspective image.

Further, an endoscopic image storage device 16 for storing endoscopic images is connected to the image mixer 14. This endoscopic image storage device 16 includes the following X-ray imaging device 17
The endoscope image is memorized when the operation switch is turned on.

On the other hand, 17 is an X-ray imaging device. The X-ray imaging device 17 is comprised of an X-ray generator 18 that irradiates X-rays from outside the body toward the area to be observed A, a fluorescent plate 19, an X-ray imaging tube 20, a control device 21, and the like. In this X-ray imaging device 17, after turning on an operation switch (not shown), the X-ray generating device 18 is activated with a certain time delay, and during this delay time, the endoscopic image is stored in the storage device 16. At the same time, the switch 13 is switched to the contact B side.

The endoscopic image display device configured as described above is
The insertion section 3 of the endoscope main body 1 is inserted into the body cavity, and the distal end section 3a is positioned at the region to be observed A. Then, illumination light is irradiated onto the observed part A through the light guide 4,
A subject image is formed on the solid-state image sensor 9. This image is converted into an electrical signal, passes through a signal line 10, undergoes image processing in a control device 12, is sent through a switch 13 to an image mixer 14, and is displayed as an endoscopic image. In this case, the switch 13 is on the contact A side.

When obtaining a fluoroscopic image using X-rays, an operation switch (not shown) of the X-ray imaging device 17 is turned on. Then, one frame of the endoscope image at this moment is stored in the storage device 16, and the switch 1
3 is switched to the contact B side, and the endoscopic image is displayed on the display 15 as a still image. After this delay time has elapsed, the X-ray generator 18 is activated and the X-ray generator 18 is activated.
A fluoroscopic image of the area to be observed A obtained by the line image pickup tube 20 is sent to the image mixer 14, and the fluoroscopic image is displayed next to the endoscopic image.

Therefore, even when a solid-state image sensor is used as the observation optical system, accurate diagnosis can be made by simultaneously observing the endoscopic image and the X-ray fluoroscopic image, making endoscopy even more effective. It is something that can be made into something.

In the above-mentioned embodiment, the endoscopic image is stored during the delay time after the X-ray imaging device 17 is turned on. The image may be constantly stored in the storage device, and the latest stored content may be reproduced on the display at the time of X-ray imaging. Further, the endoscopic image and the X-ray fluoroscopic image may be configured to be displayed separately on two separate displays.

As explained above, this invention stores an image before X-ray irradiation in an endoscope image storage device, and
The stored image immediately before the rays are irradiated is reproduced during X-ray imaging so that it can be viewed simultaneously with the X-ray fluoroscopic image. Therefore, when a solid-state image sensor is used as an observation optical system, it is possible to compensate for the non-operation of the solid-state image sensor during X-ray irradiation.
By comparing the endoscopic image and the X-ray fluoroscopic image, inspection can be performed accurately and easily.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view showing a partial cross section of an endoscope main body, and FIG. 2 is a schematic diagram of an endoscope image display device. 1... Endoscope main body, 4... Light guide (illumination optical system), 9... Solid-state image sensor, 15... Display device,
16... Endoscope image storage device, 17... X-ray imaging device, A... Observed part.

Claims (1)

[Scope of Claims] 1. An endoscope body equipped with an illumination optical system that provides illumination light to a part to be observed in the body and a solid-state image sensor that obtains an image of the part to be observed, and A display device that displays an endoscopic image, an X-ray imaging device that irradiates the observed region with X-rays from outside the body and displays the X-ray image on the display device, and stores the endoscopic image obtained by the solid-state image sensor. An endoscopic image display device comprising: an endoscopic image storage device that reproduces a stored image on the display device when imaging with X-rays. 2 The X-ray imaging device is configured to irradiate X-rays with a certain time delay after turning on its operation switch, and the endoscopic image storage device operates during this delay time to store the endoscopic image. An endoscopic image display device according to claim 1, characterized in that: 3. The endoscopic image display device according to claim 1 or 2, wherein the endoscopic image and the X-ray image are displayed side by side on the display surface of the same display device.