SU1230599A1 - Intestine cannula - Google Patents

Description

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The invention relates to experimental physiology, in particular to intestinal fistulation in order to study the qualitative and quantitative aspects of digestion in animals.

The purpose of the invention is to increase the accuracy and duration of the research.

FIG. 1 shows the cannula and its location in the intestine in the experimental position (plug and hose), incision; in fig. 2 - cannula with a grid area, a slit; in fig. 3 - cannula out of experience, incision; in fig. 4 - cannula shape; in fig. 5 - scheme of implantation of the cannula.

The cannula contains a tee with straight 1 and 2 perpendicular to it, horn-shaped tubes 3 (horns) designed to exit and return the contents of the intestine, a comb-shaped protrusion 4 between the horns, thickening 5 edges of the cribriform protrusion (folds), on which the double-walled a rubber chamber 6, a slit 7 through which separating and sealing devices are inserted into the tube, an opening 8 in the wall of a ridge-shaped protrusion. Through it, the side tubule 9 of the double-walled rubber chamber 6 is led out, which covers the sluice (plate) 10 with lateral bulges 1 at the end and a rubber border 12. Lateral bulges 1 at the end of the sluice 10, the entrance to the grooves of the ridge-shaped protrusion 4, reinforce the sluice 10 in the lumen of the cannula.

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FIG. 1-5 are also indicated: a velor cannula cover 13, a velor tailpiece 14 and a velour rim 14a of a transverse tube 1 for connecting to the intestine 15, a cannula connecting circuit 16 of the intestine (a continuous end suture attaches the end of the intestine to the end of the velor cannula 13 to 13 U-shaped intermittent sutures, the sero-muscular layer of the intestine is attached to the deboning rim 14a of the transverse wing 1 of the cannula), abdominal wall 17, reinforcement mesh 18 of the cannula, tube 19 of the tube 9, potato stoppers 20, handles 21 with button, ligature loops 22, 23 for Fixing the cork 20 with the taped 21 in the gut 15; node 24 between the holders. The arrows indicate the movement of the contents: A - exit, B - return.

The use of the cannula of the proposed design gives a good pro59Ch2

her life, accuracy and length of experiments on animals. Example of cannula manufacture. The cannula is manufactured in a laboratory. To do this, take the form (Fig. 4) in the form of a tee, in which the straight section 1 is a straight tube with a cross section, approaching the diameter of the intestinal tube, and 0 tube 2 at the end splits into two horns 3. Between the horns the protrusion 4 is left in the form of a ridge with side embeddings 5. A mesh made of nylon, Dacron or 5 other synthetic fabric is applied in two layers, the subsequent two layers are also made of plastic strips. Next, the straight section 1 of the tee is wrapped around the ends with two circles of polyester filament 0 and two circles of polyethylene strips along the top of the threads, thereby giving elasticity to the transverse edge and creating a bezel for connection with the midi-1 muscle layer of the intestine. Straight section 5 1 and tube 2 to 2/3 are wrapped with strips of medical velor, leaving excess velor at the ends of the transverse wing. After that, the whole tee is wrapped with a severe bandage 0 in two layers and the whole billet is placed

in a drying oven at 160 ° C for 20 minutes. Take out the blank from the cabinet, easily remove the cotton winding. The form is also removed. A light cannula is obtained, covered with velor pile; the transverse wing is entirely, and the tube is 2/3. The tip of the heated metal object is conducted along the ridge of the protrusion 4 formed between the horns Q 3 of the tube 2, thereby creating a slot 7 with thickened edges 5. A double-walled rubber chamber 6 is inserted into the tube 2 through the slot 7, from which the thin rubber tube 9. The last 45 is removed through a puncture in one of the walls of the ridge 4 of the tube 2 to the outside. When the cannula in all parts is ready, check its operation. Insert the gateway 10, remove it, inflate the chamber 6, test it for tightness, etc. After a thorough check of the fit of all parts, the cannula is disassembled and a day before the operation begins, it is immersed in an antiseptic solution.

An example of cannula implantation in the intestinal tube.

After the laparotomy, the desired section of the intestine is laid out and skeletonized by 67 cm. The intestinal press or looped clamp is inserted 5-6 cm from the skeletonized section. The contents are fingerprinted in the anal direction and put the second press 5-6 cm more anally than the skeletized body. plot guts. Skeleton area is covered with napkins, see ochen in rivanol. Through the mesentery at the oral and anal ends of this area

miss ligatures. The assistant lifts the skeleton area, and

the second assistant keeps the corks of boiled potatoes ready. The surgeon cuts out 2/3 of the skeletal part of the intestinal tube, and the assistants quickly insert potato plugs 20 in. formed two stumps so that the crabs remain free around the entire circumference. Potato corks 20 are fixed in the lumen of the intestine in advance with ligatures 23. The Kraut stump is also carefully treated with antiseptic solutions, which simultaneously contributes to the impregnation of the potato cork with antibiotics. Cut the mucosa in a circle of intestine in both stumps. A cannula is brought in with the velor edges 14 turned off and the handles 21 on both plugs are guided through a tube. This is easily done because the holders are made from synthetic tubing or from ordinary fishing line. They are tightened and secured to each other by a node 24 above the horn tubes 3, thereby contributing to a tight fit of the intestine 15 and the straight section of the cannula 1 end to end. Then, the straight section 1 on the one and the other side of the tube 2 with the aid of ligatures is fixed to the mesentery, which is separated from the skeletal sections of the intestine. The inner surface of the velor — and the midsectional layers of the intestinal tube is treated with medical glue and stitched with a usual continuous seam along the mesenteric semicircle; at the meeting sites of both sides of the intestinal tube, the suture is finished with surgical nodes. Excess velor and intestinal stump cut. The suture is re-poured with glue and the joint is terminated by applying intermittent U-shaped sutures 16 between the seromascal layer of the intestine and the rim I4a of the transverse cannula wing. The whole straight cannula site is rotized. The end of the tube on the base of the horn-shaped overwrap tubes5

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with a castration loop, the horn tubes are pressed against each other so that the tube as a whole has the appearance of a uniform tube, is taken with a clip inserted through the counteropenthures, behind the end of the gauze wrap and removed from the abdominal cavity. The tube 2 is drawn into the abdominal wall so that the upper surface of the upper surface of the upper abdomen into the muscle layers, but beyond the skin. Take off the wrapper. The horns-like tubes 3 are straightening and take on their original appearance. Before the surgical wound is stitched, the ligature 23, which fixes the potato corks 20, is removed. The latter are removed alternately, pulling the pins 21 after the animal is removed from the anesthesia, and before the animal is offered food. There is no danger if potato jams are not removed from the cannula to the outside. Usually, the potatoes are broken when the holder is pulled out and later digested. The plug 20, which has been in the intestine for some time, delays the flow of chyme, ensures the sterility of the suture connecting the intestine with the cannula from end to end. All this greatly contributes to the reliability of engraftment of the cannula and its further work.

After removing the plugs 20, a double-walled rubber chamber 6 is inserted into the cannula tube 2, pushing it through the gateway 10 through the crest 7 of the comb-shaped protrusion 4. When the gateway 10 abuts against the walls of the straight section 1 of the cannula, the rubber chamber 6 completely enters the tube 2; the sluice 10 is removed and through the opening 8 of the wall of the tongue-like protrusion 4, the outlet tube 9 is pulled out. The edges of the rubber chamber 6 are turned over onto the thickened edges 5 of the slot 7 of the tongue-like protrusion 4 and sealed with a castration loop. Then the chamber is blown up with a pre-measured amount of air (Fig. 3) and the discharge tube is closed with a plug 19. The chamber acquires the function of a shutter or plug. In this state, it is still on the animal did not experiment.

Before the experiment, the stopper 19 was removed from the rubber tube and the sluice 10 was inserted into the chamber, which, abutting

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into the wall of the straight section I of the cannula, the contents of the intestine of the claw 11 are protruded into the grooves of the walls of the experimenter, and along the way; into the crest-shaped protrusion 4. The tube 2 and returns to the intestine; .a, exit from the intestine and into two channels. On the oral channel 5 intestines, marked with strepki.

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Compiled by V. Dolgov Editor M. Tovtin Tehred G. Terber Proofreader G. Reshetnik

Order 2472/7 Circulation 660 Subscription

VNIIPI USSR State Committee for Inventions and Discoveries

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

The intestinal cannula, which contains a body in the form of a tee with straight and perpendicular sections and a locking device, is necessary because, in order to increase the accuracy and duration of research, the perpendicular section of the cannula is made in the form of a tube with two horn-shaped tubes, between which there is a ridge-shaped protrusion with a slit having lapels, the locking device being made in the form of a double-walled rubber chamber located inside the tube, the inter-wall cavity of which is connected to the atmosphere by means of a pipe corks with a stopper, and the edges are fixed on the slots, there is a plate passed through the slit inside the chamber, while the straight section of the cannula is covered with medical velor with a lap at its ends for implantation into the intestinal tube end to end.