Patent ID: 7896846

Claim:
A cannula assembly for use in a surgical procedure, which comprises: a housing including discrete proximal and distal housing components configured and dimensioned for releasable connection; a cannula member defining a longitudinal axis, the cannula member defining a longitudinal opening therethrough for passage of a surgical instrument; a sealing member having proximal and distal (bees disposed within the housing, the sealing member extending across the longitudinal axis of the cannula member and having a predetermined shape prior to insertion of the instrument, the sealing member comprising a fabric, the sealing member having an hourglass shape defining an open aperture in an initial condition thereof for the receipt of the surgical instrument and arranged so that insertion of the instrument causes the aperture of the sealing member to expand to an expanded condition thereof and resiliently contact the outer surface of the instrument to form a substantial seal therewith; and a seal clamp configured and dimensioned to secure an outer periphery of the sealing member within the housing, the seal clamp including at least one post extending therefrom along the longitudinal axis, the at least one post being configured and dimensioned to be received within at least one corresponding opening formed in the distal housing component.