| 摘要 |
A surgical portal apparatus includes a portal member dimensioned to access tissue and having a longitudinal passageway therethrough to permit access to underlying tissue, and defining leading and trailing ends, a seal housing associated with the portal member and a seal mount at least partially disposed within the seal housing. The seal mount is adapted for rotational movement within the seal housing. The seal mount includes an instrument seal adapted to establish a substantial sealed relation with a surgical object introduced within the longitudinal passageway and a closure valve adapted to substantially close the longitudinal passageway in the absence of the object. |
