Patent ID: 8202252

Claim:
A surgical portal apparatus comprising: a housing; a sleeve extending from the housing, the sleeve dimensioned for positioning within tissue, the housing and the sleeve defining a longitudinal axis and having a longitudinal passage for permitting passage of a surgical object; and a seal mounted to the housing, the seal including a plurality of independent leaf members depending at least radially inwardly from the housing relative to the longitudinal axis, the leaf members dimensioned and adapted for movement to between a first position corresponding to an open position of the seal member toward a second position to establish a substantial sealing relationship with a surgical object introduced through the seal; a motor operatively connected to the leaf members and adapted to move the leaf members between the first position and the second position; and resistive circuitry associated with the motor and adapted to detect an increase of load on the motor and to thereby releasably secure the leaf members in the second position.