JPS5921391Y2 - Advanced camera endoscope film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a film for an endoscope with an advanced camera.

Generally, a tip camera type endoscope has a cartridge storage chamber formed in the tip component, and the cartridge is stored in the cartridge storage chamber, and the film inside the cartridge is transferred via a pulling wire inserted into the insertion section. It is pulled out by operation from the hand-held operation unit, and it is also pulled out one frame at a time for each shot.

However, there is a certain distance between the cartridge storage chamber and the photographing lens section, and a length corresponding to this distance must be exposed in advance.

This length cannot be used for shooting.

Further, after photography is completed, an extra portion of the end of the film is required as a knob and is exposed to the outside when the tip cap is removed, and this portion cannot be used for photography either.

That is, conventional film requires long portions at both ends that can be photographed but cannot be used for photographing.

By the way, since the capacity of the cartridge in the advanced camera type endoscope is greatly limited, the film is inherently short.

Moreover, with this advanced camera type endoscope, film is loaded at the tip of the insertion tube, so if you run out of film during an examination, you have to take the trouble of removing the endoscope from the patient, loading it with film, and trying again. Since the device is inserted into the patient, the patient will experience pain twice.

In other words, the presence of a considerable length of film that cannot be used as described above is not only uneconomical, but also increases the possibility of causing pain to the patient.

The present invention was developed in view of the above circumstances, and its purpose is to provide a film for advanced camera type endoscopes that makes effective use of the limited length of the film. be.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 shows a distal end camera type endoscope in which a photographing optical system 3 is incorporated in a distal end component 2 of an insertion section 1. As shown in FIG.

The distal end component 2 is formed by incorporating various parts inside a tubular case body 4, and a cap 5 is removably screwed onto the distal end portion of the case body 4.

By removing this cap 5, the cartridge storage chamber 6 formed within the tip component 2 can be opened.

That is, by attaching and detaching the cap 5, the cartridge 7 can be loaded into or removed from the cartridge storage chamber 6.

Furthermore, an illumination window 8, a photographing window 9, and an observation window 10 are provided adjacent to each other on the side wall of the case body 4.

The observation window 10 is formed by a prism 11 provided inside the insertion section 1. It is connected to the eyepiece section on the operation section side via an imaging lens 12 and an image guide 13.

Further, a lamp 14 is installed inside the illumination window 8, and the lamp 14 illuminates the inside of the body cavity.

Further, a photographing lens 15 is installed inside the photographing window 9.

Further, a film feeding passage 17 extending from the cartridge storage chamber 6 to the curved tube portion 16 of the insertion portion 1 is provided inside the photographing lens 15 .

That is, this film feeding passage 17 guides the film 18 drawn out from the cartridge 7 and positions it one frame at a time on the exposure surface 19 facing the photographic lens 15.

On the other hand, the cartridge 7 has a main body 2 as shown in FIG.
A shaft 21 is provided at the center of the interior of the shaft 21, around which the film 18 is wound, and a pair of light shielding members 22.
It is led to the outside through a feeding port 24 between the holes 23 and 23.

Further, as shown in FIG. 3, the film 18 is provided with small holes 25 and 26 at each of its tip and end, and each of the holes 25 and 26 is filled with a long soft member, such as a soft string. 27 and 28 are attached.

As shown in FIG. 4, the string 28 at the end of the film 18 is wound around the shaft 21 in the cartridge 7 in a line.

The string 27 on the distal end side is connected to the distal end of a pull-out wire 29 inserted into the insertion section 1 of the endoscope.

Next, a method of using the film 18 for a distal end camera type endoscope having the above configuration will be explained.

First, the film 18 is wound around a shaft 21 in the cartridge 7 following a string 28 on the distal end, and a portion of the string 27 on the distal end is exposed to the outside from the feeding opening 24.

To load the cartridge 7 in this state into the endoscope, the cap 5 is removed from the tip of the tip component 2 and the cartridge storage chamber 6 is opened.

Then, connect the string 27 on the distal end side to the endoscope's pull-out wire 29.
At the same time, the cartridge 7 is fitted into the cartridge storage chamber 6.

Then, the cap 5 is attached.

Thus, the cartridge 7 can be mounted with the film 18 completely contained therein.

When photographing, pull out the pull-out wire 29 from the operating section on the hand side of the endoscope, feed it into the film feed passage 17, advance it one frame, and place the most advanced frame on the exposure surface 19. to be located.

Thereafter, by performing a photographing operation, a predetermined region within the body cavity is photographed.

That is, pull the shooting lever on the endoscope's operating section,
By lighting the lamp 14, the field of view inside the living body cavity is imaged on the film 18 through the photographing optical system 3, and can be photographed.

Furthermore, in order to perform the next photograph, the pull-out wire 29 is pulled and the film 18 is advanced by one frame.

Then, the same photographing operation as described above is performed.

Photographing is performed one after another in this manner, and the film 18 is used by being fed out until its end portion faces the photographing optical system 3.

Even when the last frame on the distal side of the film 18 has been photographed, the string 28 on the distal side remains sufficiently in the cartridge 7.

When the cap 5 is removed and the cartridge 7 is pulled out, the end of the string 28 is exposed to the outside.

The film 18 can then be removed from the endoscope by pinching and pulling out the exposed string 28 with fingers.

As explained above, in the present invention, a long string is connected to the end of the film for an endoscope with an advanced camera stored in a cartridge, and this string remains in the cartridge when all the frames have been photographed. This is how it was done.

Therefore, even if the entire length of the film is photographed and exposed, the film can be taken out from the endoscope using the flexible member.

In other words, the film can be used completely and effectively over its entire length without any waste.

Conventionally, this type of film can generally shoot 26 frames, but according to the present invention, it becomes possible to shoot 32 frames.

Therefore, if the film runs out during an examination, the endoscope is removed from the patient, loaded with film, and reinserted into the patient, thereby reducing the possibility of causing pain to the patient twice.

Moreover, it goes without saying that the film can be used economically.

Furthermore, the string connected to the film can be used during film development and drying, improving workability.

In addition, the long string prevents the film from getting too far inside the endoscope and being unable to pull it out quickly, making it safer.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a sectional view of the vicinity of the tip of the insertion section of the endoscope, Fig. 2 is a sectional view of the cartridge, Fig. 3 is a plan view of the film, and Fig. 4 is a sectional view of the endoscope. is a diagram showing the state of the string at the end of the film. 1...Insertion section, 2...Tip component, 3
...Photographing optical system, 6...Patrone storage chamber, 7...Patrone, 9...Photographing window, 14...Lamp, 17 ...Film feeding passage, 18...Film, 28...
...string.

Claims (1)

[Scope of utility model registration request] When a string is connected to the distal end of a film for a distal camera endoscope that is stored in a cartridge loaded at the tip of a distal camera endoscope having a photographing optical system in the distal end component, and all frames have been photographed, A film for an endoscope with an advanced camera, characterized in that at least the end of the string remains within the cartridge.