JPH023972B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an endoscope photographing device for photographing the inside of a body cavity.

Attach the optical power supply device and imaging device to the endoscope,
When photographing the inside of a body cavity, it is common to supply electrical energy from the optical power supply device to the photographing device via a universal cord to drive the photographing device. However, recently, treatment tools such as electric scalpels are inserted into body cavities using the channel of an endoscope as a guide to treat the affected area. It may get mixed into the line and cause the imaging device to malfunction.

This invention was made in view of the above circumstances, and its purpose is to introduce light energy from an optical power source into a photographing device, convert this light energy into electrical energy, and drive the photographing device. In this way, it is an object of the present invention to provide an endoscope photographing device that can prevent malfunctions of the photographing device and the optical power supply device even when high-frequency noise occurs.

The present invention will be explained below based on an embodiment shown in the drawings. In the figure, reference numeral 1 denotes an endoscope, which is composed of an operating section 3 having an eyepiece section 2, an insertion section 5 having a tip structure section 4, and a universal cord 7 having a connector 6. The insertion section 5 of the endoscope 1 has one end connected to the eyepiece section 2 and the other end connected to the tip structure section 4.
An image guide 8 that is connected to the image guide 8 and a first light guide 9 that has one end connected to the connector 6 via the universal cord 7 and the other end connected to the tip component 4 are installed inside. Further, the eyepiece section 2 includes a photographing device 1.
0 is attached, and the connector 6 of the universal cord 7 is connected to the optical power supply device 11. This optical power supply device 11 is composed of a light source 12 and a light source control circuit 13, and this light source control circuit 13 includes a light source side light receiving element 14 that receives a signal from the photographing device 10, and a light source side light emitting element that sends a signal to the photographing device 10. Element 15 is connected. The photographing device 10 includes a film 16 and a film cassette 17 for recording a subject image, and a camera control circuit 18.
A camera-side light emitting element 19 for sending signals to the camera and a camera-side light receiving element 20 for receiving signals from the optical power supply device 11 are connected. Furthermore, a photoelectric conversion element 21 made of, for example, a solar cell is connected to the camera control circuit 18 for converting light energy into electrical energy.

On the other hand, a second light guide 22 is installed inside the universal cord 7, one end of which faces the light source 12 via the connector 6, and the other end faces the photoelectric conversion element 21 via the eyepiece 2. are doing. Furthermore, the universal code 7 has a third
light guide 23 and fourth light guide 2
4 are installed inside. One end of the third light guide 23 faces the light source side light emitting element 15 via the connector 6, and the other end faces the camera side light receiving element 20 via the eyepiece 2. Also, the fourth
One end of the light guide 24 faces the light receiving element 14 on the light source side via the connector 6, and the other end faces the light emitting element 19 on the camera side via the eyepiece 2. The optical power supply device 11 and the photographing device 10 are configured to relay optical signals through the second, third, and fourth light guides 22, 23, and 24.

When the light source 12 of the optical power supply device 11 is turned on, the light generated from it is guided to the distal end component 4 via the first light guide 9 and illuminates the inside of the body cavity. The light is introduced into the photoelectric conversion element 21 of the photographing device 10 via. Therefore, the light energy from the light source 12 is converted into electrical energy by the photoelectric conversion element 21, and this electrical energy is used to convert the camera control circuit 1 into
8 is driven. Further, the output signal from the camera control circuit 18 is transmitted from the camera side light emitting element 19 to the light source side light receiving element 14 via the fourth light guide 24.
Output signals from the light source control circuit 13 are input from the light source side light emitting element 15 to the camera side light receiving element 20 via the third light guide 23, and the synchronization signal and charge completion signal necessary for photographing are interrupted.
At this time, the channel of the endoscope 1 (not shown)
Even if a treatment instrument that generates high-frequency noise, such as an electronic scalpel, is inserted into the body cavity and the affected area is treated,
Since the photographing device 10 and the optical power supply device 11 are relayed by optical signals, the photographing device 10 and the optical power supply device 11 will not malfunction due to high frequency noise.

Note that the light introduced into the first light guide 9 may be blocked by a shutter etc. for photographing, but in this case, the light introduced into the second light guide 22 is always illuminated using an optical system such as a suitable mirror. In addition, if the camera control circuit 18 of the photographing device 10 is provided with a capacitor-rechargeable battery that stores the output of the optical power conversion element 21, that is, the electric power, it is possible to introduce light into the camera control circuit 18 of the photographing device 10. It may be shaded.

In addition, since the light introduced into the second light guide 22 does not need to be visible light, invisible light such as infrared light, which is unnecessary with a normal light source, is sent to the second light guide 22, and visible light is sent to the first light guide. A filter or the like may be used to separate the light into the light guide 9. In this case, the advantage is that even if the light from the second light guide 22 introduced into the photographing device 10 leaks onto the film 16, it will not be exposed to light. There is.

Further, the electrical energy obtained by the photoelectric conversion element 21 is supplied to the camera control circuit 18 and also to a shutter drive motor, a data imprinting motor, etc., which is controlled by the camera control circuit 18.
It can be used as power for LEDs, film winding motors, etc.

As explained above, this invention introduces light energy from an optical power supply device into a photographing device and converts this light energy into electrical energy to drive the photographing device. This has the effect of preventing malfunctions of the photographing device and the optical power supply device even if noise occurs. Furthermore, by providing a light energy introduction means with one end facing the light source of the optical power supply device and the other end facing the photographing device, there is no need to provide a separate light source within the optical power supply device, and the optical power supply device can be easily operated. It can be made smaller and no extra electrical circuit is required. Furthermore, since the light guide for illuminating the object and the entrance end of the introduction means are arranged close to each other in order to allow the same light source light to enter, there is also the effect that the entrance end side can also be made smaller.

[Brief explanation of drawings]

The drawing is a schematic diagram showing an embodiment of the present invention. 1... Endoscope, 9... First light guide, 10...
Photographing device, 11... Optical power supply device, 21... Photoelectric conversion element, 22... Second light guide, 23... Third light guide, 24... Fourth light guide.

Claims (1)

[Claims] 1. One end is arranged opposite to a light source in the optical power supply device that connects an optical power supply device and an imaging device to the endoscope, and inputs light energy to a light guide for illuminating a subject provided in the endoscope. A means for introducing the light energy into the photographing device by arranging the other end toward the photographing device, and a means for converting the light energy into electrical energy are provided, so that the electric energy drives the photographing device. An endoscope imaging device characterized by: