| http://www.w3.org/ns/prov#value | - A further aspect of the present invention is a cannula for a trocar, the cannula including an elongated cylindrical tube having a first inside diameter, an open first end, and an open second end adapted for receiving an obturator; and wherein the open first end is flexible and internally tapered from the first inside diameter to a second inside diameter, smaller than the first inside diameter, th
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