JPH0633939Y2 - Rectal catheter - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rectal catheter used for injecting a contrast medium / air from the human anus into the rectum / colon / colon during an X-ray examination.

[0002]

2. Description of the Related Art In a conventional rectal catheter, balloons are provided at two locations on the outer periphery of the distal end of the catheter body, and these balloons hold the catheter body in use. For this reason, the structure of the rectal catheter is complicated, and a large amount of manufacturing cost is required. Therefore, the selling price of the rectal catheter also becomes high, and the rectal catheter that should originally be disposable tends to be repeatedly used, which has been a problem from the viewpoint of hygiene. Also, JP-A-52-599
No. 79 discloses a flange-shaped sheet material behind the balloon.
Install a plug to discharge and inject into the central opening
Also, a bag for storing excrement is attached below the sheet material.
A girder structured catheter is disclosed. But Naga
In this catheter, between the balloon and the sheet material,
Since the distance can not be adjusted, it is appropriate according to age, height, sex
The problem is that you have to prepare many things of different length
is there. In addition, the structure is complicated and many insertion / removal operations are required when using.
There is a problem that it is necessary.

[0003]

[Problems to be Solved by the Invention] The problems to be solved by the present invention are simple structure, easy to manufacture, low in manufacturing cost, easy to dispose of, and excellent in hygiene.
To provide a rectal catheter.

[0004]

Means for Solving the Problems The gist of the present invention, which has solved the above problems, is to provide a passage for a contrast medium, air, and excrement inside a tubular catheter body having a predetermined length, and a pouring outlet connected to these passages. In a rectal catheter provided at the proximal end of the catheter body, an expandable and contractible annular tube is fitted to the outer periphery of the distal end of the catheter body, and a flexible sheet material is attached to the catheter body at the rear position of the annular tube. It is a rectal catheter characterized by allowing the tongue to pass through in a flange shape.

[0005]

In the rectal catheter of the present invention, a balloon is formed by fitting an annular tube around the outer circumference of the distal end of the catheter body. Then, a flexible sheet material is loosely penetrated like a flange on the catheter body at the rear position of the annular tube. During use of the rectal catheter, the balloon and the flexible sheet material hold the catheter body. The position of the flexible sheet material can be adjusted by moving the flexible sheet material along the catheter body. By this
The distance between the balloon and the sheet material can be adjusted.
Adjust to the optimal interval according to age, height and gender
However, the sheet material can be brought into close contact with the outer circumference of the anus. Yo
Therefore, there are many cases where the distance between the balloon and the sheet material is different.
There is no need to prepare it.

Since only one balloon is provided in the catheter body, the inflation / deflation mechanism of the balloon is simplified and the manufacturing cost is reduced. Since the balloon is formed by fitting the same annular tube, it is easy to manufacture. Since the flexible sheet material is simply penetrated into the catheter body, it is structurally simple and does not require manufacturing cost.

The rectal catheter of the present invention can be widely applied to many types of catheter bodies because it does not care about the material, properties, internal structure, etc. of the catheter body, and has the same action as the above. It is a thing.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially cutaway sectional view showing an embodiment, and FIG.
3 is a partially cutaway sectional view taken along line AA of FIG.
4 is a partially cutaway sectional view in FIG. 4, FIG. 4 is a partially cutaway sectional view in the vicinity of the distal end of the catheter body, and FIG. 5 is a partially cutaway perspective view in the vicinity of the proximal end of the catheter body.

In the rectal catheter 1 of this embodiment, a contrast medium injection pipe 3 and an intestinal air pressure feeding pipe 4 are provided inside a tubular catheter body 2 having a predetermined length, and the other internal space is excreted. It is the passage 5. Since the respective passages are separated, a large amount of the intestinal substance or the contrast agent returning after enema is rarely returned to the intestine.

A branch plug 9 having a contrast medium injection port 6, an intestinal air pressure supply port 7 and an excretion port 8 at the proximal end of the catheter body 2.
Is attached. A check valve 10 corresponding to the flow direction is attached to each of the contrast agent injection port 6 and the like to prevent backflow. The contrast agent injection port 6 and the like are connected to dedicated hoses 11. An expandable and contractible annular tube 12 is fitted on the outer circumference of the distal end of the catheter body 2, and a flexible rubber sheet material 1 is attached to the catheter body 2 at the rear position of the annular tube 12.
3 is allowed to loosen like a flange.

The catheter body 2 is excellent in waterproofness because the paper cylinder is immersed in a silicone resin liquid and dried to form a silicone film, and is easy to manufacture and inexpensive to manufacture.
Since the catheter body 2 and the contrast medium injection pipe 3 have a bellows shape, they do not transmit various shocks during use to the anus and are strong against bending. An annular tube 12 is fitted around the distal end of the catheter body 2 to form a balloon 14. The balloon 14 is inflated and deflated by moving air into and out of the balloon 14 through the air tube 15. Since there is only one balloon 14, the structure is simple. Since the catheter main body 2 is held during use by the balloon 14 and the flange-shaped rubber sheet material 13, the same performance as that of the conventional two-balloon type can be obtained.

Since the balloon 14 is formed by fitting the annular tube 12 to the catheter body 2, folding it back and stacking it, it is easy to manufacture. Further, by inflating the balloon 14, the annular tube 12 on the outer peripheral surface side of the catheter main body 2 is in a state of being strongly pressed against the outer peripheral surface of the catheter main body 2 by air pressure, so that it is stable. The rubber sheet material 13 can be moved along the catheter body 2 to adjust its position.

The branch plug 9 attached to the proximal end of the catheter body 2 is manufactured by integrally molding the contrast agent injection port 6, intestinal air pressure supply port 7 and excretion port 8 so that the manufacturing cost is low. Moreover, the connection with the dedicated hose 11 is easy.

[0014]

According to the present invention, since a rectal catheter having a simple structure, easy to manufacture and low in manufacturing cost can be provided, the disposable catheter is promoted and the hygienic problem is solved.

[Brief description of drawings]

FIG. 1 is a partially cutaway sectional view showing an embodiment.

FIG. 2 is a partially cutaway sectional view taken along the line AA of FIG.

FIG. 3 is a partially cutaway sectional view taken along line BB of FIG.

FIG. 4 is a partially cutaway cross-sectional view near the tip of the catheter body.

FIG. 5 is a partially cutaway perspective view near the proximal end of the catheter body.

[Explanation of symbols]

 1 rectal catheter 2 catheter body 3 contrast agent injection pipe 4 intestinal air pressure feeding pipe 5 excrement passageway 6 contrast agent injection port 7 intestinal air pressure feeding port 8 excretion port 9 branch plug 10 check valve 11 dedicated hose 12 annular tube 13 rubber Sheet material 14 Balloon 15 Air tube

Claims (1)

[Scope of utility model registration request] 1. A rectal catheter in which a passageway for a contrast medium, air and excrement is provided inside a tubular catheter body having a predetermined length, and a pouring / discharging port connected to these is provided at the proximal end of the catheter body. A rectal catheter characterized in that an expandable and contractible annular tube is fitted on the outer periphery of the distal end of the catheter body, and a flexible sheet material is loosely penetrated into the catheter body at the rear position of the annular tube. .