A surgical access apparatus for positioning within an incision in tissue comprising: a member of elongated seal (200) defining a longitudinal axis and having a proximal portion (202), an intermediate portion (204) and a distal portion (206) including a lip (216), the sealing member elongated having a longitudinal passageway (208) defined by an inner surface (210) for reception and passage of a surgical object, the member elongated seal is adapted to transition between a first state in which the lip extends transversely to the longitudinal axis defining a first transverse dimension sufficient to facilitate securement of the sealing member stretched within an incision in tissue, and a second state in which the lip extends distally defining a second transverse dimension less than the first transverse dimension to facilitate insertion within the incision in tissue, the member sell ado elongated comprises at least one material semirresiliente normally predispose to the first state thereof； and an installation member (100) positionable at least partially within the longitudinal passageway (208) member elongated sealing member secured installation the sealing member elongated along the inner surface (210) so that movement distal longitudinal of the installation member along the longitudinal axis causes the engagement between the mounting member and the inner surface (210) causing the intermediate portion (204) is lengthened, and the lip (216) deviates so the member elongated seal to transition from the first state to the second state, the installation member is disconnected from member elongated seal when subjected to a predetermined force to allow the installation member is removed from longitudinal passageway with member sealing elongated in the first state, thereby leaving the elongated seal member within the incision to receive the object quirúrg ico, wherein the distal surface of the lip (216) in the first state defines the most distal portion of the inner surface (21
