Patent ID: 7914491

Claim:
A surgical access device adapted for removable positioning within a percutaneous tissue tract, comprising: a housing; a constricting mechanism positioned within the housing and including a proximal member in mechanical cooperation with a distal member to permit relative rotation therebetween such that the constricting mechanism is repositionable between a first state, in which the constricting mechanism is adapted to permit insertion of a surgical instrument, and a second state, in which the constricting mechanism is adapted to engage the surgical instrument to limit transverse movement thereof, the constricting mechanism further including a plurality of rods positioned between the proximal and distal members, wherein each rod includes a bore formed at a first end and a slot formed at a second end, the proximal member including a first plurality of pins extending outwardly therefrom, and the distal member including a second plurality of pins extending outwardly therefrom, the first plurality of pins and the second plurality of pins being configured and dimensioned for engagement with the plurality of rods; and an access sleeve extending distally from the housing.