Surgical device for stapling and/or fastening body tissues

A surgical device comprising:

• an operation section operated outside a body cavity;
• an insertion section extending from the operation section for insertion into the body cavity and having a distal end portion;
• a guide section having a proximal portion extended from the distal end portion of the insertion section and extending in a same direction as the insertion section, a curved portion extending from the proximal portion and having an exposed surface, and a guide groove formed in the exposed surface and curved along the curved portion;
• a cutter inserted in the guide groove and which is movable along the guide groove, and the cutter having an electrically conductive cutting section extended from the exposed surface;
• driving means for moving the cutter along the guide groove;
• and
• current-supplying means extending through the insertion section from the operation section to the cutting means, for applying a high-frequency current to the cutter.