Patent ID: 8740925

Claim:
A surgical system for penetrating tissue, which comprises: a cannula assembly including: a cannula housing; a cannula sleeve depending from the cannula housing and defining a longitudinal axis; and an object seal disposed in mechanical cooperation with the cannula housing and being adapted to establish a substantial seal about an object inserted therethrough, the object seal comprising: a rigid insert including a first horizontal surface, a first vertical wall disposed inwardly of the first horizontal surface, and a second vertical wall disposed inwardly of the first vertical wall, the first vertical wall having a first diameter, the second vertical wall having a second diameter, the first diameter being larger than the second diameter; and an elastomeric seal disposed in mechanical cooperation with the rigid insert, the elastomeric seal including a horizontal surface disposed within the second vertical annular wall, and the elastomeric seal including an aperture disposed therein for accommodating insertion of a surgical instrument therethrough, the aperture defining a third diameter, the third diameter being smaller than the second diameter; an obturator assembly at least partially positionable within the cannula assembly, the obturator assembly including an obturator housing and an obturator member extending from the obturator housing, the obturator member having a leading penetrating member adapted to penetrate tissue.