Patent ID: 8597250

Claim:
A stability assembly for a trocar system comprising: a stability member having a generally conical outer surface and a lumen extending through the stability member; a base positioned at least partially within the lumen of the stability member, the base having an outer surface and an inner surface defined by a passage extending therethrough, the passage adapted to receive a cannula therethrough, and the inner surface including at least one constriction; and a cannula retention member positioned at least partially within the passage of the base and is rotatably coupled to the base, wherein the cannula retention member is rotatable between a first position in which the passage of the base and the retention member define a first inner diameter, and a second position in which a portion of the retention member is advanced over the constriction such that the passage of the base and the retention member define a second inner diameter smaller than the first inner diameter further comprising a latch mechanism configured to selectively retain the cannula retention member in the second position, the latch mechanism comprising: a first mating surface formed on the outer surface of the base; and a second mating surface formed on the cannula retention mechanism and configured to mate with the first mating surface to prevent movement of the cannula retention member relative to the base; and the first and second mating surfaces being positioned such that when the cannula retention member is positioned in the second position, the first and second mating surfaces are mated.