RU2734055C1 - Method for experimental simulation of false cyst of abdominal cavity - Google Patents

Abstract

FIELD: medicine.SUBSTANCE: invention relates to medicine, namely to experimental surgery. During an operation after a median laparotomy, a peritoneal region with an intra-abdominal fascia of size 4 × 4 cm is separated from an anterior abdominal wall. Thereafter, free edges of the formed flap are sutured together by a peritoneal surface from the outside, thereby forming a closed cavity.EFFECT: method enables approximating the cyst model to its clinical course, reproducing the cyst in less time, performing the operation in a single step.1 cl, 2 dwg, 1 ex

Description

The invention relates to medicine, namely to the field of experimental surgery, and can be used to simulate a false cyst of the abdominal cavity.

A method for creating a liver cavity is known in the literature, in which intraparenchymal administration through a subclavian catheter of 70% ethanol solution is carried out (RF Patent No. 2318248, IPC G09B 23/28, 2006.01. Method for modeling liver abscess. Applicant: Nartailakov MA).

There is a method of modeling a fibrous cyst of the liver in an experiment, including the introduction of an inflatable rubber balloon and intraparenchymal administration of a sclerosing solution, characterized in that at the same time, a percutaneous liver puncture is performed under ultrasonic control, a two-channel catheter with a balloon is inserted through a needle, the balloon is inflated through the first channel to the desired size the simulated cavity, sclerosing solutions are introduced through the second channel of the catheter, the balloon is emptied on days 4-5, X-ray and ultrasound monitoring of the cyst is carried out (RU 2394278 C1 from 10.07.2010. Method for modeling a fibrous liver cyst in experiment).

In the literature, a method is known for creating a false cyst of a pancreatic cyst by implanting a balloon inflated with air into the omental bursa of an experimental animal. After 30-40 days, a second laparotomy is performed and a rubber balloon is removed from the formed fibrous cavity (SU 1243013 A1, IPC G09B 23/28, 04.01.1984. Method for modeling a pseudocyst of the pancreas).

The disadvantages of these methods are:

- the impossibility of creating a given size of the cavity and the implementation of dynamic control over the cavity of the created cyst,

- the need for a second operation to remove the balloon,

- long term modeling of a fibrous cyst,

- possible subcapsular ruptures of the liver, leading to bleeding and bile leakage,

- prolonged stay of a foreign body in the abdominal cavity can lead to an inflammatory reaction around it with possible rejection and secondary purulent complications.

As a prototype, a method for creating a liver cyst is selected in which an inflatable rubber balloon is used, which is implanted into the liver of an experimental animal (dog, sheep) using laparotomic access. After 40 days, a fibrous capsule is formed around the balloon (Omarov MM, in the book. Issues of diagnosis and surgical treatment of echinococcosis. 1979, - pp. 131-134).

The disadvantages of this method are:

- "open" traumatic way of modeling,

- multi-stage technique,

- impossibility of dynamic assessment of the volume of a simulated cyst,

- the need for a second operation to remove the balloon,

- long term modeling of a fibrous cyst.

The proposed invention is aimed at increasing the reproducibility of the method for modeling a pseudocyst of the abdominal cavity.

The specified technical result is achieved by the fact that a section of the peritoneum with an intra-abdominal fascia measuring 4 × 4 cm is dissected from the anterior abdominal wall, followed by suturing the free edges of the formed flap with the peritoneal surface outside, thereby forming a closed cavity.

The proposed method is illustrated by drawings, where;

fig. 1 - laparotomy cutting out a peritoneal flap with intra-abdominal fascia on the feeding leg, where:

1 - The edges of the formed flap

2 - Peritoneal flap with intra-abdominal fascia on the feeding pedicle

3 - Abdominal wall

4 - Laparotomic wound

fig. 2 - the formation of a closed cavity by stitching the free edges of the formed flap with the peritoneal surface outside, where:

3 - Abdominal wall

4 - Laparotomic wound

5 - Cyst model

In the proposed method, the size of 4 × 4 cm dissected from the anterior abdominal wall of the peritoneal area with the intra-abdominal fascia is the most optimal for modeling the pseudocyst of the abdominal cavity.

The method is carried out as follows: after a midline laparotomy, a section of the peritoneum with an intra-abdominal fascia measuring 4 × 4 cm is dissected from the anterior abdominal wall (Fig. 1). After that, the free edges of the formed flap are sutured with the peritoneal surface outside (Fig. 2), thereby creating a cyst model.

This method was tested on 5 dogs on the basis of the Federal State Budgetary Educational Institution of Higher Education of the Astrakhan State Medical University of the Ministry of Health of Russia.

Example. Dog Ball, weight - 20 kg.

After premedication, a midline laparotomy was performed under rometar-zoletil anesthesia. A site was found for performing a cyst model, a section of the peritoneum and intra-abdominal fascia was prepared from the anterior abdominal wall with a scalpel, a 4 × 4 cm flap was formed (Fig. 1). Further, by stitching the free edges of the formed flap, a closed cavity (Fig. 2) is formed with the peritoneal surface outside ( cyst model).

After that, the wound was sutured tightly.

The proposed method increases the reproducibility of the method for modeling a false cyst of the abdominal cavity:

- providing the possibility of modeling a false cyst of the abdominal cavity:

- approximation of the cyst model to its clinical course,

- performing the operation in one step,

- reproduction of the cyst in less time,

- result in 100% of cases,

- technically easy to implement,

- the possibility of using for the study of a true cyst of the abdominal cavity.

Claims (1)

A method for experimental modeling of a pseudocyst of the abdominal cavity, including the creation of a pseudocyst by performing a median laparotomy, characterized in that a section of the peritoneum with an intra-abdominal fascia is dissected from the anterior abdominal wall of 4 × 4 cm in size, followed by stitching of the free edges of the formed flap with the peritoneal surface outside, thus thus forming a closed cavity.

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