JP2005058531A - Columnar contrast medium enema container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contrast medium enema container for facilitating fine adjustment of the amount of a contrast medium injection and the amount of air feed. <P>SOLUTION: In the columnar contrast medium enema container for facilitating the fine adjustment of the amount of injection of the contrast medium and air, a delivery port 2 for attaching a flexible tube 9 provided with a tip nozzle 10 through a front cock 4 at the front part of the container 1 is provided on a position shifted from the center line of the container 1, and an air feed port 3 for attaching an air feed means 14 through a rear cock 11 at the rear part of the container 1 is provided. The container 1 has a columnar shape. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a contrast agent enema container used for diagnosing the large intestine with X-rays.

Conventionally, as a simple container for contrast medium injection used for the double contrast method of the large intestine mucosa (hereinafter, collectively referred to as a contrast medium enema container), a suspended type having an opening on one side (for example, Patent Document 1) and contrast medium enema containers (for example, see Patent Document 2) made of two types of lemon-shaped plastic materials having openings on both the front and rear sides are known.
The applicant previously provided an inlet having a cap that is detachable from the container, and a flexible tube having a nozzle at the tip is provided on the axis of the inlet. A container equipped with a backflow prevention valve in the valve body provided integrally with the tube, and an air injection adapter attached to the inlet for injecting air after enforcing the barium sulfate chemical solution in the container Proposed a lemon-shaped contrast medium enema container (see Patent Document 2).

  Furthermore, the applicant of the present application provides a flexible tube having a tip nozzle as a modified version of the contrast agent enema container through a front cock equipped with a check valve at the front opening of the container body, Proposing a lemon-type contrast agent enema container that eliminates the need for attaching and detaching the air injection adapter by integrally providing a rear cock with air supply means in the rear opening of the container body facing the front opening (For example, refer to Patent Document 3). This improved lemon-type contrast agent enema container is still used in the medical field.

  By the way, the large intestine is a tubular organ that travels complicatedly in the abdominal cavity, and there are differences in the amount of contrast medium injected due to individual differences in thickness, length, or travel. Therefore, in order to make a highly accurate diagnosis, it is indispensable to depict a double contrast image that can identify the lesion site more clearly. Therefore, it has been demanded to develop a container capable of adjusting the injection amount of contrast medium in a minute amount. However, conventional suspension-type or lemon-type contrast agent enema containers cannot be air-introduced until after the entire amount of contrast agent has been injected. It was necessary to have a product of a certain capacity. In addition, the conventional contrast medium enema container cannot adjust the injection amount during the examination, so there are limits to answering the above request even if several types of products with different capacities are prepared.

Japanese Patent Laid-Open No. 2003-19184 Japanese Utility Model Publication No. 60-15565 Japanese Utility Model Publication No. 63-7245

  An object of the present invention is to provide a contrast agent enema container capable of easily adjusting a minute amount of an injection amount of a contrast agent and capable of quickly supplying air after injecting a predetermined amount of the contrast agent. There is to develop.

In order to achieve the above object, the present inventors have further studied the improvement of a lemon-type contrast medium enema container. As a result, the shape of the container is changed from a conventional lemon type to a cylindrical type, and the container outlet is provided. Succeeded in developing a contrast agent enema container that allows easy adjustment of the amount of contrast medium injected and allows air to be supplied at any time. did. The present invention has been made based on such findings.
That is, the present invention provides a delivery port for attaching a flexible tube having a nozzle at the front end through a front cock in the front of the container at a position shifted from the center line of the container, and a rear cock through the rear cock. Provided with a cylindrical contrast agent enema container that is easy to adjust a minute amount of contrast medium injection amount, characterized in that it has an air inlet for attaching an air supply means and the container is of a cylindrical shape Furthermore, the present invention includes a flexible tube having a tip nozzle at the delivery port via a front cock, and an enema amount provided with an air feeding means at the air delivery port via a rear cock. It is an object of the present invention to provide a cylindrical contrast agent enema container that can be easily adjusted in a minute amount.

The contrast agent enema container of the present invention has the following effects by making the shape of the container cylindrical and by providing the injection port at a position off the center line in the major axis direction of the container.
1) A small amount of contrast medium injection can be adjusted with a simple operation.
2) It is easy to add contrast media and remove excess contrast media.
3) Air can be sent in as quickly as possible.
4) Since the container is cylindrical, no back flow of contrast agent to the air injector occurs.

  Thus, according to the cylindrical contrast medium enema container of the present invention, the contrast medium and air can be injected into the intestine with a simple operation without requiring skill. X-ray pictures can be obtained. This facilitates the diagnosis of large intestine X-rays at many clinics and clinics, and provides a clue to early diagnosis of malignant lesions in the lower gastrointestinal tract. Therefore, the present invention greatly contributes to X-ray diagnosis of the lower digestive tract.

Hereinafter, the cylindrical contrast agent enema container of the present invention will be described in detail based on the illustrated embodiments.
FIG. 1 is a sectional view of a cylindrical contrast agent enema container of the present invention. In the figure, a container 1 is a cylindrical container made of a synthetic resin made of polyethylene or the like and having an inner diameter of 4 to 10 cm and a capacity of 200 to 500 mL. The center line in the major axis direction of the container 1 is shifted in front of the container 1 (left side in the drawing), and the small-diameter delivery port 2 is on the center line in the longitudinal direction of the container 1 in the rear side (right side in the drawing). A small-diameter air inlet 3 is provided in a protruding manner. A front cock 4 and a rear cock 11 are integrally attached to the delivery port 2 and the air delivery port 3 by screwing or high-frequency welding, respectively. Further, the front cock 4 has a flexible nozzle having a nozzle at the tip. The tube 9 and the air feeding means 14 (FIG. 6) are attached to the rear cock 11, respectively. Reference numeral 15 denotes a reinforcing rib. In this embodiment, an example is shown in which both the front cock 4 and the rear cock 11 are high-frequency welded to the outlet 2 and the air inlet 3 of the container 1.

As shown in the enlarged cross-sectional views of FIGS. 2 to 4, the front cock 4 is fixed to the fixed cock 5 attached to the delivery port 2 of the container 1, and is movable on the fixed cock 5 so as to be slidable in the axial direction. This is a horizontal sliding type one-way cock composed of the cock 6.
The fixed cock 5 is composed of a large-diameter portion 5-1 and a small-diameter portion 5-2, and is seated so as to have a flow path 8 on the inner periphery near the boundary between the large-diameter portion 5-1 and the small-diameter portion 5-2. 5-3 protrudes, and a locking projection 5-4 is provided on the inner peripheral edge of the tip of the small diameter portion 5-2.

  On the other hand, the movable cock 6 has a collar 6-1 slightly closer to the container 1 than the center position, and a large-diameter portion 6-2 externally attached to the small-diameter portion 5-2 of the fixed cock 5 from the collar 6-1; The small-diameter portion 6-3 to which the flexible tube 9 is attached is extended from the collar 6-1 to a substantially intermediate position of the large-diameter portion 6-2. The extended portion 6-4 and the large diameter portion 6-2 form a space 7, and the small diameter portion 5-2 of the fixed cock 5 is densely slidable in the axial direction in the space 7. Inserted. In addition, the circular opening is divided into two parts at the distal end of the extending portion 6-4 so as to be integrated in the diameter direction, and the distal end is positioned in the direction of the delivery port 2 so as to project integrally in the coaxial direction. A conical stopper 6-6 that opens and closes the flow path 8 is integrally projected through the flat base 6-5, and the fixed cock 5 is provided at the outer periphery of the distal end of the extended portion 6-4. A locking projection 6-7 that engages with the locking projection 5-4 of the small-diameter portion 5-2 is provided. Protrusions 6-8 and 6-9 for locking the flexible tube 9 are provided on the outer periphery of the distal end portion and the substantially intermediate portion of the small diameter portion 6-3.

As shown in FIGS. 2 and 4, the front cock 4 having the above-described configuration slides in the direction of the arrow A (FIG. 2) with a collar 6-1, so that the flow path 8 by the stopper 6-6 is used. Is released, and the contrast medium in the container 1 is sent out through the flow path 7, between the stopper plug 6-6 and the small-diameter portion 6-4, and through the small-diameter portion 6-3 (FIG. 4). On the other hand, when the movable cock 6 is slid in the direction of arrow B (FIG. 4), the flow path 7 is tightly plugged by the stopper 6-6 and the flow of the contrast agent is blocked (FIG. 2). .
When the movable cock 6 is slid in the direction of arrow A, the locking projection 6-7 of the small diameter portion 6-4 is provided on the inner surface of the small diameter portion 5-2 of the fixed cock body 5. Since it engages with -4, the movable cock 6 does not come out.

  The tube 9 that is externally attached to the small-diameter portion 6-3 of the movable cock 6 in the front cock 4 is made of a flexible soft resin such as polyvinyl chloride, and has a predetermined diameter and length. Then, it is press-fitted into the small-diameter portion 6-3 of the movable cock 6 and bites into the locking projections 6-8 and 6-9, and is fixed integrally. The nozzle 10 is inserted and fixed integrally, and a cap for sealing the outlet hole is attached to the nozzle 10.

  On the other hand, the rear cock 11 of the air inlet 3 of the container 1 is, like the front cock 4, a fixed cock 12 attached to the air inlet 3, and a movable externally attached to the cock 12 so as to be slidable in the axial direction. This is a horizontal sliding type one-way cock provided with the cock 13, and the structure and function thereof are substantially the same as those of the front cock 4, and thus the description thereof is omitted.

Next, a method for injecting a contrast medium and air into the intestine using the cylindrical contrast medium injection container of the present invention will be described.
First, a predetermined amount of contrast medium (barium sulfate suspension) is stored in the container 1, and after the container 1 is put in warm water to an appropriate temperature, the cap of the flexible nozzle is removed and the movable cock 6 is moved to the arrow. 4) By sliding in the direction (FIG. 2) to release the sealing plug of the flow path 8 by the stopper plug 6-6, the state shown in FIG. 4 is achieved, and the container 1 is erected to lightly push the peripheral wall to be flexible. The air inside the tube 9 is exhausted. Next, the flexible tube 9 is inserted from the anus, the peripheral wall of the container 1 is pressed, and the barium sulfate suspension is injected into the intestine.

After the injection of a predetermined amount of barium sulfate solution by the above operation, the front cock 4 is slid in the direction of the arrow B to close the flow path 8, and then the rear cock 11 is opened, and the air inlet side cap is removed. The air feeding means 14 (FIG. 7) is connected to the rear cock 11 to fill the container 1 with air. Next, after closing the rear cock 11 and opening the front cock 4 by the above operation, the container 1 is pressed to feed the air in the container 1 into the intestine. Furthermore, this operation is repeated when the amount of air fed is less than the predetermined amount.
After completing the operation of injecting a predetermined amount of barium sulfate suspension and air in this way, the body is rotated by ordinary means so that the barium sulfate suspension is uniformly attached to the intestinal mucosa and double contrast X A line photograph is taken.

  Next, an operation method for adjusting the injection amount of the contrast agent in a minute amount will be described with reference to FIGS. These drawings show the state of the contrast medium (C) remaining in the container 1 after the injection when the container 1 is tilted by about 24 ° and the contrast medium is injected into the intestine. FIG. 5 shows a case where the delivery port 2 of the container 1 is positioned above, and at this time, the distance (X) between the bottom of the container 1 and the delivery port 2 is the largest, and the remaining amount of the contrast agent (C) is the largest. Become. On the contrary, FIG. 6 shows the case where the container 1 is rotated 180 ° from the position where the delivery port 2 is the lowest, that is, the position (X) between the bottom of the container 1 and the delivery port 2 at this time. The remaining amount of the contrast agent (C) becomes the smallest as it becomes smaller. Therefore, when the container 1 is rotated from the position of FIG. 5 to the position of FIG. 6 and the residual amount of contrast medium at each position is different, injection according to the number of contrast medium due to individual differences becomes possible.

For example, when a contrast medium injection container having a capacity of 300 mL is used in a horizontal state as shown in the figure, the amount of contrast medium remaining in the container varies from about 50 mL to 5 mL.
Further, when the contrast agent is excessively injected, the above-described cock operation can be reversed to take out the excessive contrast agent from the intestine.
As described above in detail, according to the cylindrical contrast agent enema container of the present invention, the adjustment of the contrast agent injection amount can be performed by a simple operation without requiring skill. The standard product with a capacity of 300 mL that is normally used has made it possible to cope with individual differences in adult body shape.

It is sectional drawing of the cylindrical type contrast agent enema container of this invention. It is sectional drawing of the state in which the front cock of the cylindrical contrast agent enema container was closed. FIG. 5 is a cross-sectional view taken along line VV in FIG. 2. It is sectional drawing of the state in which the front cock of the cylindrical contrast agent enema container was opened. It is sectional drawing which shows the residual state of a contrast agent in case the delivery port of the cylindrical contrast agent enema container is located in the uppermost part. It is sectional drawing which shows the residual state of a contrast agent in case the delivery port of the cylindrical contrast agent enema container is located in the lowest part. It is a perspective view of the cylindrical contrast medium enema container. It is sectional drawing of the conventional lemon type contrast agent enema container.

Explanation of symbols

1. Container 2. 3. Outlet Air inlet 4. Front cock 5.12. Fixed cock 5-1. Large diameter part 5-2. Small diameter part 5-3. Sat 5-4. Locking protrusion 6.13. Movable cock 6-1. Collar 6-2. Large diameter part 6-3. Small diameter part 6-4. Extension part 6-5. Flat base 6-6. Stopcock 6-7 to 6-9. 6. Locking protrusion Space part 8. Flow path 9. Flexible tube 10. Nozzle 11. Back cock 14. Air supply means 15. Reinforcement rib

Claims (2)

  A contrast medium enema container, wherein a delivery port for attaching a flexible tube having a nozzle at the tip thereof is provided in front of the container via a front cock at a position shifted from the center line of the container, and at the rear of the container A contrast agent enema container that is provided with an air inlet for attaching an air supply means via a rear cock, and that the container is of a cylindrical type, and that allows easy adjustment of a contrast agent injection amount. 2. The cylindrical type according to claim 1, wherein the container has a flexible tube having a nozzle at the front end through a front cock at a delivery port and an air feeding means through a rear cock at an air feed port. Contrast agent enema container.

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