Patent ID: 9078697
Filing Date: 2015-07-14
Classification: A61B

Abstract:
1. A surgical portal apparatus, which comprises: a housing including a flexible housing wall and a seal mount that has an internal seal configured and dimensioned to establish a substantial sealed relation with a surgical object; a cannula member extending from the flexible housing wall of the housing and having leading and trailing ends, the cannula member defining a longitudinal axis between the leading and trailing ends, the housing and the cannula member defining a longitudinal passageway for permitting passage of the surgical object, the flexible housing wall of the housing connecting the cannula member and the seal mount of the housing, the flexible housing wall permitting movement of the seal mount relative to the longitudinal axis between a first position of the seal mount and a plurality of second positions of the seal mount; and a spring completely enclosed within and inwardly spaced from an inner surface of the flexible housing wall between the seal mount of the housing and the cannula member, the spring being movable between a centered position and an off-centered position as the seal mount moves between the first position and one of the plurality of second positions, the spring being substantially aligned with the longitudinal axis in the centered position and substantially offset from the longitudinal axis in the off-centered position, the spring including a plurality of helical windings, each helical winding circumscribing the longitudinal axis and being longitudinally offset from adjacent helical windings.