JPH0630204Y2 - Rectal catheter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an improvement of a rectal catheter for injecting a contrast agent / air from the human anus into the rectum / colon / colon for X-ray examination.

(Prior Art) In a conventional rectal catheter, an injection path for a contrast agent such as Ba liquid, a discharge path for an intestinal substance / an enema-enhanced contrast agent, and an air path for sending air to the intestine are provided in the catheter body. It was shared using the space (passage).

Therefore, if the contrast agent or the excrement of the intestinal substance that has been enema is discharged into the rectal catheter and then the contrast agent or air is injected again, the excrement remaining in the rectal catheter and the returned contrast agent will also enter the intestine. It was re-injected into the inside (up to the vicinity of the upper colon), and the bacteria and harmful substances in the intestine contained therein were returned so as to diffuse widely into the intestine, which was a cause of the onset or worsening of the disease.

In order to solve this problem, the present applicant has developed a rectal catheter in which the inside of the rectal catheter is divided into a contrast agent passage, an excretion passage, and an air injection passage by an integrally formed partition wall. However, dividing the inside of the rectal catheter into three parts is difficult and expensive to manufacture. Further, when the manufacturing cost of the rectal catheter is increased, it is not disposable and the number of times of use is increased, which is unsanitary.

(Problems to be solved by the device) The object of the present invention is to solve the problems of these rectal catheters, reduce the amount of intestinal substances and excrement to be returned to the body again, and improve hygiene. Another object of the present invention is to provide a rectal catheter that is easy to manufacture and inexpensive to manufacture.

(Means for Solving the Problems) The gist of the present invention which has solved the above problems is to provide a contrast agent injection pipe and a flexible intestinal air pressure feeding pipe inside a catheter body provided with a balloon capable of expanding and contracting on the outer periphery of the distal end portion. While being installed, the contrast agent injection pipe and the intestinal air pressure feeding pipe have their tip discharge ports located near the tip opening of the catheter body, and the catheter body is made of tubular waterproof paper and has a fold in the middle. The rectal catheter is characterized in that it is made flexible by further providing a fold in the middle of the contrast agent injection pipe.

(Operation) In this invention, the inside of the rectal catheter is divided into the contrast agent injection path, the air injection path, and the discharge path into the contrast agent injection pipe, the intestinal air pressure feeding pipe, and the other internal space of the rectal catheter, and the passages are mutually provided. Separated. This basically prevents a large amount of the intestinal substance / contrast agent after returning from the enema to be returned to the intestine (toward the upper colon).

Next, between the tip opening of the rectal catheter and the tip discharge port of the contrast agent injection pipe, the tip discharge port of the intestinal air pressure feeding pipe, Since the distance between the outlet and the tip opening of the catheter is as short as possible, it is possible to reduce it as much as possible, and a large amount of these intestinal substances and dirty contrast agent are returned to the intestine when the contrast agent and air are pumped into the intestine. There is no.

Therefore, it was hygienic. Further, the present invention can be manufactured by only inserting the contrast medium injection pipe and the intestinal air pressure feeding pipe into the tubular rectal catheter. Easy and cheap. In addition, the catheter body is made of tubular waterproof paper to reduce the cost. The flexibility of the rectal catheter is to provide a fold in the catheter body,
This is made possible by providing a fold in the contrast agent injection pipe and by making the intestinal air pressure feeding pipe flexible.

(Example) Hereinafter, an example will be described with reference to the drawings.

In the embodiment shown in FIGS. 1 to 4, the catheter body 1 is a cylindrical body of waterproof paper material having a diameter of 13 mm, and a balloon portion 2 of silicon rubber material and a catheter tip insertion portion 3 are provided on the outer periphery of the tip. . The insertion portion is provided with an opening 4. Further, most of the catheter body 1 is provided with a fold 5 so as to be easily bent. The contrast agent injection pipe 6 is a plastic pipe having a diameter of 6 mm and is pleated except for the tip portion so that it can be easily bent. The discharge port 7 at the tip is near the opening 4 of the catheter body 1. The intestinal air pressure feeding pipe 8 is a flexible plastic tube having a diameter of about 2 mm, and its tip discharge port 9 is also near the opening 4 of the catheter body 1.

In the figure, 10 is a small-diameter air tube for sending air to the balloon of the balloon portion 2, 11 is a branch plug adhered to the proximal end portion of the catheter body 1, and a contrast agent injection pipe 6 inside the catheter body 1. The intestinal air pressure feeding pipe 8 is pulled out to be connected to the discharge passage of the remaining internal space of the catheter body 1 and the excretion pipe 12.

In this embodiment, since the catheter body 1 is made of waterproof paper, the contrast agent injection pipe 6 is made of thin plastic pipe, and the intestinal air pressure feeding pipe 8 is made of flexible plastic tube, the manufacturing cost is further reduced. It is supposed to be possible. Further, the pleats 5 and 13 are processed so that the catheter main body 1 and the contrast agent-only dispensing pipe 6 can be easily bent.

(Effects of the Invention) As described above, according to the present invention, the contrast medium injection pipe and the intestinal air pressure feeding pipe are arranged inside the catheter body, and the contrast medium passage, the air pressure feeding passage and the excrement discharge passage are disposed. By separating and, it is possible to prevent the injected contrast agent and air from being contaminated with excrement, and by keeping the discharge port of the pipe and the opening of the catheter body as close as possible, the contamination can be reduced as much as possible. Yes, it was hygienic. Further, since the pipe is used and the catheter main body is made of waterproof paper, there is an advantage that the production is easy and the cost can be reduced.

[Brief description of drawings]

1 is a partially cutaway front view showing an embodiment, FIG. 2 is a sectional view taken along the line AA in FIG. 1, FIG. 3 is a sectional view taken along the line BB in FIG. 1, and FIG. It is sectional drawing in the CC line. 1: Catheter body 2: Balloon part 3: Catheter tip insertion part 4: Opening part 5, 13: Pleat 6: Contrast agent injection pipe 7: Discharge port 8: Intestinal air pressure feeding pipe 9: Discharge port 10: Air tube 11: Branch tap 12: Pipe for excretion

Claims (1)

[Scope of utility model registration request] 1. A contrast agent injection pipe and a flexible intestinal air pressure feeding pipe are provided inside a catheter main body having a balloon which is expandable and contractible around the outer periphery of the distal end portion, and the contrast agent injection pipe and intestinal air pressure feeding are provided. Position the tip discharge port of the pipe near the tip opening of the catheter body, and make the catheter body with tubular waterproof paper and make a fold in the middle to make it flexible, and further in the middle of the contrast agent injection pipe. A rectal catheter characterized in that it is provided with a fold and is made flexible.