We performed single port transumbilical appendectomy and cholecystectomy using the TriPort (R-port, Advanced Surgical Concepts, Wicklow, Ireland), inserted through a transumbilical incision in a cadaver model. A articulating instrument, Autonomy(TM) (Cambridge Endo, MA, USA) in right hand was used for retraction in addition to a standard laparoscopic instrument in left hand for dissection and coagulation. Both procedures were technically successful. In conclusion, single port surgery may be performed safely. And in the near future, more complex procedures could be performed through single port in accordance with the advancement of the instruments.