The oval shaped obturator 100 is provided for installing a trocar tube or cannula 120 including {HEAD ~ a tubular body} 122 with {TAIL ~ a relatively large diameter}, e.g., 20 mm., compared with the intercostal spacing of the adjacent ribs in the body wall 
The oval shaped obturator 100 is provided for installing a trocar tube or cannula 120 including { HEAD ~ a tubular body } 122 with { TAIL ~ a relatively large diameter } , e.g. , 20 mm . , compared with the intercostal spacing of the adjacent ribs in the body wall
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH