Patent ID: 8157833

Claim:
A trocar fixation device, comprising: an elongate tube that is mountable onto the exterior of a cannula, the elongate tube having a first, proximal end, a second, distal end, a lumen extending between the first, proximal end and the second, distal end the lumen sized and configured to receive an exterior surface of the cannula, a first, generally cylindrical interior surface defined by the lumen, a second, generally cylindrical exterior surface having a substantially constant diameter from the proximal end to the distal end of the elongate tube, a first, proximal-end region, a second, distal-end region, a central region positioned between the first, proximal-end region and the second, distal-end region, and a plurality of slits positioned about a periphery of the central region of the elongate tube and forming a row of slits, wherein the elongate tube is actuatable between an activated position in which the elongate tube comprises the lumen extending between the proximal end and the distal end, the generally cylindrical interior surface defined by the lumen, and the generally cylindrical exterior surface having the substantially constant diameter extending continuously and remaining continuous from the proximal end to the distal end of the elongate tube and wherein the slits define ridges protruding from the generally cylindrical exterior surface of the elongate tube and a deactivated position in which the generally cylindrical exterior surface of the elongate tube is substantially smooth and has the substantially constant diameter extending continuously and remaining continuous from the proximal end to the distal end of the elongate tube.