Abstract

In case of internal drainage of abdominal cavity and retroperitoneal cavity formations, a “plug” was developed for the leading loop of the small intestine, which eliminates compression, ischemia and necrosis of the intestinal wall with subsequent migration of the created structure into the gastrointestinal tract and leveling the planned effect. We form a “stub” on the small intestine according to the developed technique, in which compression and necrosis of its wall with subsequent migration of the structure into the intestinal lumen are excluded (Figure 1).

Figure 1:Scheme of drainage of the cavity formation of the abdominal cavity or retroperitoneal space using a “plug”.

During the operation, the diameter of the small intestine section (D1), the wall thickness of the small intestine (d), where it is planned to perform a “stub”, are determined. Upon receipt of the desired parameters by the formula D2 = 2√D1d - the required diameter of the corrugated portion of the small intestine (D2) is calculated, after which the intended stage of the operation is performed (Figure 2).

Figure 2:

d-wall thickness of the small intestine; R1 is the radius of the small intestine; R2 is the radius of the corrugated portion of the small intestine; D1 is the diameter of the small intestine; D2 - diameter of the corrugated portion of the small intestine with a “plug”; 2P R1 is the cross-sectional area of the small intestine stacks; S1 is the cross-sectional area of the wall of the small intestine; S1 = 2ΠR1d = D1Пd; S2 is the cross-sectional area of the corrugated wall of the small intestine; S2 = Π R22 = Π (D2/2) 2; S1 = S2 - a condition for the absence of compression and necrosis of the wall of the small intestine in the area of the stub; D1Pd = Π (D2/2) 2; D2/2 = D1d; D2 = 2√D1d - the desired diameter of the corrugated portion of the small intestine with a “stub” - (Patent No. RF 2253379. Registered in the State Register of Inventions of the Russian Federation 10.06.2005). “Method for creating a “stub” on the adducting loop of the small intestine during internal drainage of abdominal cavity formations”.