Patent ID: 8480575

Claim:
A surgical access system comprising: an adjustable wound retractor comprising: an proximal ring, distal ring, and a flexible, tubular retraction sheath extending between the proximal ring and the distal ring, wherein the proximal ring is rotatable around an annular axis thereof, thereby adjusting a length of the retraction sheath between the proximal ring and the distal ring; a gel cap comprising a cap ring and a gel pad coupled with the cap ring, wherein the cap ring is engagable with the proximal ring; and a trocar comprising: a fixation cannula comprising a tubular cannula body comprising a proximal end, a distal end, a longitudinal axis extending from the proximal end to the distal end; and a cannula wall defining a cannula lumen; a seal assembly coupled to the proximal end of the cannula body; a retainer extending from the cannula body; a bolster disposed on the cannula body and spaced from the retainer; and wherein the trocar has a fixation configuration in which the retainer and the bolster are dimensioned and configured to capture the gel pad therebetween, thereby fixing the cannula to the gel pad.