Patent ID: 7070586

Claim:
A trocar system for providing access across a body wall, the system comprising: a trocar including a cannula and an obturator, the obturator being removably disposed in the cannula; an anchor in the form of a first helix, the anchor being adapted for placement in an operative position wherein the first helix of the anchor extends at least partially through the body wall and in intimate contact with tissue of the body wall; and a second helix formed on the trocar and having properties for rotatably engaging the first helix of the anchor in a mating relationship, wherein when the first helix is positioned within the body wall and in intimate contact with the tissue of the body wall, rotation of the trocar relative to the anchor screws the second helix into the first helix to draw the trocar into the anchor and move the trocar into the body wall to provide access across the body wall.