| 摘要 |
A surgical portal apparatus includes a portal member defining a longitudinal axis and having a longitudinal opening therethrough for receiving a surgical object, an adjustable seal disposed within the longitudinal opening and having inner seal portions adapted to permit passage of the surgical object in substantial sealed relation therewith and an adjustment member mounted within the portal member and operatively connected to the adjustable seal. The adjustment member is positioned to intersect the longitudinal passageway to engage the surgical object and move relative to the portal member to thereby cause corresponding relative displacement of the inner seal portions of the adjustable seal and facilitate passage of the surgical object through the adjustable seal. The inner seal portions of the adjustable seal are adapted for relative movement between a first generally approximated position and a second generally displaced position upon movement of the adjustment member. The inner seal portions of the adjustable seal may be dimensioned to substantially prevent passage of fluids when in the first generally approximated position. In one arrangement, the adjustable seal includes first and second seal elements which define the inner seal portions.
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