JPS5931214Y2 - Endoscope with built-in imaging device - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an endoscope with a built-in imaging device.

When inserting an endoscope into a body cavity and photographing an affected area such as a polyp or tumor within the body cavity, conventionally, a close-up camera 2 is attached to the rear of the handle 1, as shown in FIG. , was taking pictures.

That is, the image of the object incident through the observation window 4 of the tip 3 is
The image was guided through an image guide 5 to an eyepiece 6 of the handle 1, and an image was formed on a film 7 of a close-up camera 2.

However, the above conventional technology has the following drawbacks.

First, it is inconvenient because a close-up camera must be attached to the handle each time a photograph is taken.

Second, because the balance between the handle and the close-up camera is poor,
The operation is troublesome and the operator gets tired.

Third, the close-up camera is heavy, which causes fatigue for the operator.

Fourth, the combined size of the handle and the close-up camera is long, making it inconvenient to operate.

The present invention has been made to solve the above-mentioned drawbacks, and its first purpose is to incorporate a photographing device into the handle to facilitate photographing operations.

The second purpose is to improve the balance of the entire device.

The third purpose is to reduce the weight of the entire device.

The fourth purpose is to improve operability during photographing.

In order to achieve the above-mentioned purpose, the present invention incorporates a photographing device into the handle, and curves the rear end of the image guide by approximately 180 degrees within the handle to allow the image guided by the image guide to be placed inside the handle. It is characterized in that the image is formed on a film provided in the.

Hereinafter, the configuration of the present invention will be explained based on the drawings.

FIG. 2 is a schematic cross-sectional explanatory diagram showing one embodiment of an endoscope incorporating a photographing device according to the present invention. In the drawing, 8 indicates the tip of the endoscope, and 9 indicates the handle. give specific instructions.

At the tip 8, the tip of the light guide 11 following the light source 10 is opened to illuminate the object.

Reference numeral 12 denotes an image guide, and the image guide 12 connects the observation window 13 of the tip 8 and the photographing device built into the handle 9 to guide an image of the object.

Although not shown, the endoscope also includes an air pipe, a water pipe, an angle wire, and the like.

To explain the photographing device provided in the handle 9, the rear end of the image guide 12 is curved approximately 180 degrees at the rear inside the handle 9 and faces the film 15 of the film magazine 14.

The film magazine 14 is located approximately at the center of the handle 9 and directs the surface of the film 15 toward the rear, so that the image sent via the image guide 12 is formed on the film 15.

Between the rear end of the image guide 12 and the film magazine 14, a movable mirror 16, a photographic lens 17 and...
A humeror 18 is provided.

The movable mirror 16 serves both as a reflecting mirror for sending an image to the eyepiece lens 19 and as a shutter for photographing, and in the illustrated state, it reflects the image of the object sent via the image guide 12. and sends it to the eyepiece lens 19.

Then, the operator looks through the eyepiece 19 and observes the object.

When the movable mirror 16 is rotated to the state shown in FIG. 3 by, for example, a solenoid, the image sent through the image guide 12 is focused on the film 15 by the photographing lens 17.

Note that the -... mirror 18 sends light to the light receiving element 20 for EE.

A shutter (not shown) may be provided between the folded movable mirror 16 and the film 15.

According to the endoscope incorporating the imaging device according to the present invention described above, the following significant effects can be achieved.

First, since the photographing device is built into the handle, photographing operations can be performed conveniently.

Second, the image guide is curved approximately 1800 degrees, the film is placed approximately in the center of the handle, and a rotating mirror is installed between the image guide and the film, allowing switching between observation and photography by operating the rotating mirror. By doing so, it becomes easy to set the center of gravity near the center of the handle supported by the operator, thereby improving the balance of the entire device.

Thirdly, by incorporating the imaging device, the weight can be reduced compared to the case where a close-up camera is attached, so that operator fatigue is reduced.

Fourth, operability is improved by incorporating the photographing device into the handle and making it compact.

Fifth, by curving the edges of the image guide by approximately 1800 degrees, it is now possible to capture the direct light from the image guide onto the film, which makes it possible to capture the image from the conventional image guide through a reflecting mirror or prism. It is possible to obtain a photograph that is much clearer than a photograph.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram showing a conventional example, Fig. 2 is a schematic cross-sectional explanatory diagram showing an embodiment of an endoscope incorporating an imaging device according to the present invention, and Fig. 3 is an explanatory diagram of the operation of Fig. 2. It is. 9... Handle, 12... Image guide, 15... Film, 16... Movable mirror 19... Eyepiece.

Claims (1)

[Scope of utility model registration request] The rear end of the image guide is curved approximately 180 degrees within the handle so that the image guided by the image guide is formed on a film provided in the middle of the handle, and the image guide is movable between the image guide and the film. A movable □ mirror is provided, and the movable □ mirror is used as a reflective □ mirror to send an image to the eyepiece lens at the rear end of the handle, and this movable mirror also serves as a shutter for photographing, or a movable mirror is used between the image guide and the film. An endoscope with a built-in imaging device characterized by having a shutter installed.