HYDRODYNAMICS OF DRAIN FROM POROUS NONWOVEN MATERIAL FOR VACUUM-WASHING DRAINAGE
Existing methods of purulent wounds draining in the maxillofacial area fail to provide the complete outflow of fluid. The author of the article suggested to drain purulent wounds with non-woven titanium material with continuous porosity. The aim of the study was to study hydrodynamic processes occurring in the drainage made of non-woven titanium material with through porosity and surrounding tissue of the wound. A 3D model of the drainage was created and installed in the wound cavity. In the process of drainage a negative pressure over the entire surface is revealed, it allows you to effectively aspirate inflammatory exudates from the wound cavity with odontogenic phlegmon. Due to high porosity drainage extrusion of saline does not occur, and aspiration of exudates takes place over its entire surface. The study reached the following conclusions. The design of the proposed drainage allows to perform vacuum therapy at a negative pressure of 125 mm Hg. The proposed device turns an open wound into a closed drained cavity, it also provides controlled outflow of fluid and targeted drug delivery.