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[Efficacy of soft coagulation in thoracic surgery].

The soft coagulation is a novel mode of electrosurgical device which automatically regulates its output voltage to stay below 190 Volts, causing pure coagulation without carbonization. The soft coagulation is available with bipolar and monopolar devices in thoracic surgery. Bipolar scissors can be applied for dissection of pulmonary vessels safely and efficiently without the damage to vessel wall. Monopolar soft coagulation can be applied to shrink bullous change of lung, cease air leakage from lung parenchyme or bleeding from pulmonary vessels.