JPH03267038A - Length measuring device for fluoroscopy - Google Patents

Abstract

PURPOSE:To achieve higher durability by a method wherein a plurality of pipings made of a non-X rays transmitting material are arranged almost coaxially at specified intervals, a flexible X rays transmitting heat shrinking tube is disposed to cover the pipes and a flexible core rod is inserted through the pipes. CONSTITUTION:A plurality of pipes made of a non-X rays transmitting material are arranged almost coaxially at specified intervals. A flexible X rays transmitting heat shrinking tube 1 is disposed to cover the pipes 2 and the pipes 2 are fixed inside the tube at specified intervals by shrinking it by heat. Moreover, a flexible core rod 5 is inserted through the pipes 2 and the tube 1 across between them. This produces a device which is durable highly and excellent in healthfulness and hygiene.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an X-ray device that is inserted into a forceps channel of an endoscope and introduced into a body cavity, and used to measure the dimensions of an X-ray fluoroscopic image. Regarding a length measuring tool for perspective use.

A more accurate diagnosis can be made by directly observing ulcers, polyps, etc. within the body cavity using an endoscope, or by using X-ray fluoroscopic images. Therefore, recently, cases in which endoscopic observation and X-ray fluoroscopy are used in combination have been increasing.

However, since it is difficult to accurately determine the size of ulcers, polyps, etc. using X-ray fluoroscopic images, a length measurement tool for X-ray fluoroscopy that can be inserted into the body cavity through the forceps channel of an endoscope is used. used.

[Conventional technology]

Conventionally, the above-mentioned X-ray fluoroscopy length measurement tool used a flexible synthetic resin tube with an X-ray opaque paint coated at predetermined intervals on the outer surface of the tip. .

[Problem to be solved by the invention]

However, the paint applied to the outside of the tube is not durable, as it rubs off at the exit of the forceps channel and gradually peels off, and in many cases, this type of paint cannot be left inside the body cavity. , health and hygiene problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide a length measuring instrument for X-ray fluoroscopy that eliminates such conventional drawbacks, has good durability, and is also excellent in health and hygiene.

[Means to solve the problem]

In order to achieve the above object, the length measuring tool for X-ray fluoroscopy of the present invention includes a plurality of pipes made of an X-ray opaque material arranged substantially coaxially at predetermined intervals, and a length measuring tool for covering the plurality of pipes. a flexible X-ray transparent heat-shrinkable tube which is placed inside the plurality of pipes and inside the heat-shrinkable tube, and has the pipes fixed therein at the predetermined intervals by being heated and contracted; A flexible core frame is inserted across the core frame.

[Effect]

When the length measurement tool for X-ray fluoroscopy of the present invention is irradiated with X-rays, pipes arranged at predetermined intervals appear on the X-ray fluoroscopic image, so the length of the surrounding X-ray fluoroscopic image can be measured using the pipes as an index. be able to.

The outer layer of the length measurement tool for X-ray fluoroscopy of the present invention is a heat-shrinkable tube, and the pipe serving as the index is not exposed on the outside surface, so it can be inserted smoothly into the forceps channel of an endoscope, etc., and the surface will not be rubbed. However, there are no falling objects like in the past.

However, there is a difference in rigidity between the parts of the heat-shrinkable tube with and without the pipe, and when the tube is bent, the boundary part tends to bend sharply. However, by inserting a flexible core frame inside, such sudden bending is prevented, and it bends in a smooth curve.

〔Example〕

Examples will be described with reference to the drawings.

Figure 2 shows the overall structure of the length measuring tool for X-ray fluoroscopy. 1 is a flexible, X-ray transparent heat-shrinkable tube made of polyethylene synthetic resin, etc. Can be used. The shaded portions are a plurality of pipes 2 made of an X-ray opaque material such as stainless steel, fixed at predetermined intervals inside the heat shrink tube 1.

11 is a flexible tube made of, for example, tetrafluoroethylene resin connected to the heat-shrinkable tube 1, and has an outer diameter comparable to that of the heat-shrinkable tube 1 (for example, 1.5 mm to 3 m).
m). Therefore, the length measurement tool for X-ray fluoroscopy can be inserted into the forceps channel of the endoscope with the heat shrink tube l side facing forward. 12 is a knob connected to the base of the flexible tube 11.

FIG. 1 shows the configuration of the tip portion of a length measuring instrument for X-ray fluoroscopy. The heat shrink tube 1 is arranged to cover pipes arranged coaxially at predetermined intervals, and is heated and shrinks to fix each pipe 2 inside at a predetermined interval.

Therefore, when this X-ray fluoroscopic length measurement tool is inserted into a body cavity and X-rays are irradiated, the X-ray transparent heat shrink tube 1
Since only the X-ray opaque pipe 2 is shown as an X-ray fluoroscopic image without being shown as a fluoroscopic image, the length of the surrounding X-ray fluoroscopic image can be measured using the pipe 2 as an index. Therefore, it is most preferable that all the pipes 2 are formed to have the same length and arranged at the same intervals as the length.

Note that a transparent material is used as the heat shrink tube 1. Therefore, each pipe 2 can be seen from the outside of the heat-shrinkable tube 1, as shown by diagonal lines in FIG. 2, and can be used as a length measuring tool even within the observation field of the endoscope. In this case, visibility can be further improved by coloring the outer surface of the pipe 2 in black or another color.

Also, if you apply a transparent coating such as silicone oil between the inner surface of the heat shrink tube 1 and the outer surface of the pipe 2, an air layer will not be created there, so the pipe 2 from outside the heat shrink tube 1 can be visibility can be improved.

A tip 3 is fixed to the tip of the heat shrink tube 1,
The heat-shrinkable tube 1 and the flexible tube 11 are connected by a connecting rod 4 firmly fixed inside both of them. 3a and 4a are threaded portions formed on the outer surfaces of the distal tip 3 and connecting rod 4 in order to strengthen the fixed state with the tube 1.11.

A flexible core frame 5 is inserted through the entire length of the heat-shrinkable tube 1. That is, the core frame 5 is inserted across each pipe 2 and the heat shrinkable tube l.

This core frame 5 is, for example, a quartz fiber with a core diameter of 0.4 mm and an outer diameter of 0.8 mm, and is originally used as an optical fiber, but in terms of flexibility and durability, the core frame 5 is suitable for use as

Both ends of the core frame 5 are loosely inserted into holes drilled in the tip 3 and connecting rod 4, and the core frame 5 moves freely when bent, etc., and is strong against the heat shrink tube 1. It is constructed so that no tension is applied.

As a result of providing such a core frame 5, sudden bending is prevented from occurring at the boundary between the heat shrink tube 1 and each pipe 2 during bending, and the length measuring tool maintains a smooth curve as a whole when bending. Draw and bend.

〔Effect of the invention〕

The length measurement tool for X-ray fluoroscopy of the present invention can be inserted into a forceps channel of an endoscope and introduced into a body cavity, and can easily and accurately measure the dimensions of an X-ray fluoroscopic image, and can also be used as an index. Since the pipe is housed in the tube and there is no risk of it falling, there are no health or sanitary problems when using it, and it also has excellent durability because the core frame is inserted inside.

[Brief explanation of drawings]

FIG. 1 is a side sectional view of the tip portion of the embodiment, and FIG. 2 is an overall external view of the embodiment. ■... Heat shrink tube, 2... Pipe, 5... Core frame.

Claims (1)

[Claims] 1. A plurality of pipes made of an X-ray opaque material arranged substantially coaxially at predetermined intervals; A flexible X-ray transparent heat-shrinkable tube having each pipe fixed therein at the predetermined intervals, and a flexible A length measuring tool for X-ray fluoroscopy, characterized by being provided with a core rod. 2. The length measuring tool for X-ray fluoroscopy according to claim 1, wherein the heat-shrinkable tube is made of a transparent material. 3. Claim 1 or 2, wherein the outer surface of the pipe is colored.
The length measurement tool for X-ray fluoroscopy described. 4. The length measuring instrument for X-ray fluoroscopy according to claim 1, 2 or 3, wherein the core rod is formed of an optical fiber. 5. The length measuring tool for X-ray fluoroscopy according to claim 4, wherein the core rod is formed of a quartz fiber.