RU2306154C2 - Rectal catheter - Google Patents

Abstract

FIELD: medical equipment; catheters.

SUBSTANCE: rectal catheter has cylinder, head made for close distal department of cylinder, and two tubes mounted at proximal end of cylinder at acute angle to cylinder. Elastic tube provided with scale passes through one tube and it is connected with head. Second tube is connected with manometer. Sealing contrivance is put onto cylinder, which sealing contrivance provides air-tightness of connection with tissues; the contrivance prevents catheter from dropping out by means of holders. Elastic tube is made for movement. Head is provided with cavity connected with several channels, which channels go out of cavity at acute angle to central axis of head.

EFFECT: ability of application of fluid to specific part of thick abdominal; improved precision of measurement; reliability of fixation of catheter.

3 cl, 2 dwg

Description

The procedure for washing the cavity of the colon by introducing fluid through the rectum was known in ancient times. Currently, washing the cavity of the colon, or rather its part, in addition to enemas, is carried out by special devices. In Russia, these devices are called the "Monitor intestinal washing device", in Europe - the "Colon-hydro-monitor." Several options have been proposed for rectal catheters to connect these devices with the colon cavity, but in practical medicine in Russia and Europe, simple, not perfect, and sometimes traumatic rectal catheters and cannulas are used. In Russia and Europe, the most commonly used cannula is FR 2708859 A1, A61M 25/088, 02.17.1995. The cannula consists of a cylinder and a head, the distal part of the cylinder is closed with a head, at the proximal end the cylinder is connected at an acute angle with the tube for introducing flushing fluid.

Work with a cannula.

The head is inserted into the cylinder cavity, a tube fixed at an acute angle on the cylinder is connected to the apparatus for supplying washing fluid. The cannula head and cylinder are lubricated with petroleum jelly and gently inserted through the anus into the rectum. The head is removed from the cylinder cavity, the proximal part of the cylinder is connected to a tube of the corresponding diameter going to the receiving vacuum tank. Through a tube standing at an acute angle to the cylinder, they are connected to the pump and flushing fluid is introduced from the apparatus into a cylinder of a certain temperature under pressure control. The cannula has a number of significant disadvantages. The first drawback is that the flushing fluid from the apparatus does not enter the intestinal cavity, but into the cylinder cavity and only then with an incomplete volume into the intestinal cavity, this does not allow the doctor to know exactly how much fluid enters the intestinal cavity, because the tube through which the flushing fluid is supplied under pressure to the cannula cylinder is located only 3 cm from the proximal section of the cylinder, and therefore a large volume of flushing fluid is discharged through the proximal section of the cylinder into the receiving vacuum reservoir, so the doctor does not know to what level the thick section is washed guts; the second drawback is the pressure with which the pump of the device pumps the flushing liquid into the cylinder cavity, is measured in the device, and not in the cavity of the cannula cylinder, which can lead to high pressure in the intestine and its damage; the third drawback is the cannula, which has no attachment, often pushes out fluid pressure from the rectum during the procedure.

The purpose of the invention is a rectal catheter having the ability to supply fluid to a specific area of the colon, increasing the accuracy of pressure measurement and ensuring the reliability of the fixation of the rectal catheter.

Description of the drawings.

Figure 1 shows schematically a rectal catheter in a static position. The positions in the drawing indicate: cylinder - 1, head - 2a, b, c, elastic tube - 3 with divisions in one centimeter, tube - 4, through which the elastic tube - 3 is pressed with an interference fit, tube - 5, through which pressure is measured in the cavity of the cylinder inserted into the rectum, the sealant - 6, which eliminates leakage of contents from the intestine between the rectum and the cylinder, the windows - 8 on the sealant provide fastening for hermetic pressing it to the tissues and exclude the prolapse of the rectal catheter during the procedure, the tube - 7 dissolved at a rear portion of the cylinder to drain the wash water from the colon into the vacuum collection tank. 2a - a sealed cavity, facilitates the weight of the head and ensures its buoyancy, 2b - a cavity from which channels come out at an acute angle to the central axis of the head, which provide reactive advancement of the head if the elastic tube does not restrain its movement, 2c - channels through which flushing fluid flows from the head under pressure.

Figure 2 shows a rectal catheter in the working position. The elastic tube is advanced in the cavity of the colon, its position is precisely controlled by the marks applied along its entire length. The invention - a rectal catheter - contains a cylinder 1 (Fig. 1), at the distal end it is closed with a head 2 (Fig. 2) with an elastic tube 3 extending from it (Fig. 1) with one centimeter divisions on it, at the proximal end two tubes are installed at an acute angle of the cylinder, through one tube 4 (FIG. 1) of larger diameter, the elastic tube 3 (FIG. 1) is advanced with divisions, which is connected to the head, the second tube 5 (FIG. 1) of smaller diameter is connected to the pressure gauge ( not shown), on the cylinder 1 (figure 1) put on the sealant 6 (figure 1), a circle th, slightly convex in the direction of the anus plate with windows 8 (Figure 1) for fixing the ends of rubber "braces." The sealant 6 (figure 1) is tightly pressed with rubber "suspenders" to the tissues surrounding the anus, and at the same time reliably hold the rectal catheter in the rectum, preventing its loss. The head 2 (Fig. 1) of the rectal catheter is oval, consists of two cavities 2a and 2b (Fig. 1), the upper cavity 2a (Fig. 1) - it is hermetically closed - provides buoyancy of the head, the lower cavity 2b (Fig. 1) connected to several channels 2B (Fig. 1), which exit the cavity at an acute angle to the middle axis of the head and provide washing of the intestinal wall and reactive advancement of the head along the intestinal cavity, if this movement is not limited by the elastic tube 3 (Fig. 1).

Work with a rectal catheter.

The distal part of the cylinder 1 (Fig. 1) is closed by the head 2a, b, c (Fig. 1), for this purpose, the rod is pulled to the output section by pulling the elastic tube 3 (Fig. 1) protruding from the tube 4 (Fig. 1) cylinder, the mark "0" cm will appear on the elastic tube, the second tube 5 (Fig. 1) is connected to a pressure gauge (not shown in the drawing). The head and cylinder of the rectal catheter are lubricated with petroleum jelly and gently inserted through the anus into the rectum, the sealant 6 (Fig. 1) is tightly pressed to the tissues surrounding the anus. The proximal part of the cylinder of the rectal catheter is connected to the tube 7 (Fig. 1) of the corresponding diameter, the elastic tube 3 (Fig. 1) protruding from the tube 4 (Fig. 1) is pushed into the colon in small portions. Having pushed the elastic tube 5 - 10 cm, which is determined by the divisions applied on the elastic tube, turn on the pump, and the flushing fluid begins to flow into the cavity of the colon. The buoyancy of the head and the directed flows of flushing fluid entering through the channels 2B (Fig. 1) of the lower cavity 2b (Fig. 1) of the head contribute to its advancement while pushing the elastic tube. The head is installed in the area of the left bend of the colon, which ensures optimal washing of 1/3 of the colon cavity. The location of the head in the cavity of the colon is precisely determined by the marks on the elastic tube that is connected to the head. Moving the elastic tube 3 (figure 1) in the intestine up and down, perform hydro-massage of the intestine.

Having completed the procedure of washing the colon, the elastic tube is smoothly pulled from the cavity of the colon to the “0” cm mark, in this position the distal section of the cylinder is closed, the “tightenings” of the sealant are removed and the rectal catheter is smoothly removed from the rectum. The procedure is completed.

Claims (3)

1. A rectal catheter comprising a cylinder and a head configured to close the distal section of the cylinder, characterized in that it contains two tubes mounted at the proximal end of the cylinder at an acute angle to the cylinder, while an elastic tube with divisions connected through one tube is connected to the head, the second tube is connected to the manometer, and a sealant is put on the cylinder, which ensures the tightness of the connection with the tissues and keeps the catheter from falling out, while the elastic tube is made with possibility of movement, and the head has a cavity which is connected with several channels, which extend from the cavity at an acute angle to the center axis of the head. 2. The rectal catheter according to claim 1, characterized in that the head has a cavity that ensures its buoyancy. 3. The rectal catheter according to claim 2, characterized in that the sealant is made with windows for rubber holders.

Images