Experimental validation of videoendoscopic isolation and occlusion of the bloodflow in open ductus arteriosus

The potentialities of videoendoscopic isolation and extravasal occlusion of large vessels with titanium clips were studied in acute and chronic experiments on 36 animals and anatomic studies on 5 human cadavers. The number and optimal sites for insertion of trocars and disposition of instruments and thoracoscope for isolation of open ductus arteriosus were determined. A method for videoendoscopic isolation of vessels is developed and possible complications and measures for their liquidation evaluated. High efficiency and low traumatism of videoendoscopic operation are proven under condition of strict adherence to methodology and sufficient qualification of the surgeon in endosurgical manipulations.