EXPERIMENTAL-STUDY OF THE HYDRODYNAMIC EFFECTS OF IRRIGATION SUCTION DRAINAGE

The function of irrigation suction drainage, as an additional method i n the treatment of bone infection, is associated with hydrodynamic pro blems that can only be experimentally examined. The visualization of l iquid movement in the experimental model was realized by adding a colo red ink to the input drain of the drainage system. When only 2000 ml o f liquid was used daily (80 drops/min), the ink penetrated the experim ental cavity only through the most proximal holes in the input drain. It spread slowly and irregularly through the liquid in the experimenta l bottle, forming pocket deposits and leaving sediment. When 6000 mi o f liquid was applied daily (240 drops/min), ink quickly penetrated the cavity through all holes in the drain, leading to turbulence and disp ersing equally in the bottle. Decoloration of the model bottle was fas ter because the output drainage was more efficient. With an increased flow, i.e., with more liquid used in the drainage, a better result was achieved. This was manifested in a swift decoloration and rinsing of the cavity.