<p>The invention is directed towards an obturator (18) for wedging through muscle fiber layers (41,43,45) to safely cut through to the abdominal cavity (32) in order to apply a cannula (12). The invention comprises a bladeless obturator (18) having a tip with a proximal portion having a cylindrical mounting shaft (89) closely fitting within an elongate shaft (21) of the obturator.</p>
