Patent ID: 8282547

Claim:
A surgical access apparatus, which comprises: a housing member defining a housing axis and a passageway therethrough, the housing dimensioned for passage through tissue; a first seal member mounted across the passageway, the first seal member having proximal and distal end faces and a defining a seal passage for permitting passage of a surgical object in substantial sealed reception therewith, the first seal member including at least one expansible segment, the expansible segment including a protruding rib extending in a proximal direction from the proximal end face and a corresponding recess defined within the distal end face and aligned with the protruding rib, the expansible segment arranged to extend radially generally toward and away from the housing axis, and being dimensioned and adapted to facilitate radial movement of the seal passage during manipulation of the object within the first seal member; and a second seal member mounted across the passageway distal of the first seal member, the second seal member defining a seal passage for substantial sealed reception of the object and being arranged about a second seal axis radially displaced from the first seal axis, the second seal member including at least one expansible segment dimensioned to facilitate radial movement of the seal passage of the second seal member during manipulation of the object, the expansible segment of the second seal member including a protruding rib extending in a proximal direction from the proximal end face and a corresponding recess defined within the distal end face and aligned with the protruding rib.