Patent ID: 8409084

Claim:
A surgical portal apparatus, comprising: a portal defining a longitudinal axis; a plurality of restricting members, each restricting member including a support segment and a contacting segment, the support segment being pivotably secured to the portal to permit radial movement of the contacting segment relative to the longitudinal axis between a rest position and a displaced position; a locking member operatively coupled to one of the restricting members to limit radial movement of the contacting segments beyond the displaced position; a rack and associated drive gear operatively coupled to one of the restricting members, the drive gear adapted for rotational movement during radial movement of the contacting segments between the rest position and the displaced position to cause corresponding longitudinal translation of the rack within the portal; and a lock out pawl coupled to the locking member, the lock out pawl movable upon movement of the locking member to selectively engage the rack to secure the rack at a defined longitudinal position corresponding to the displaced position of the contacting segments.