SURGICAL ACCESS APPARATUS AND METHOD

摘要

A trocar system (20) for providing access across a body wall includes a trocar (20) and an anchor (101) provided in the form of a first helix (102). The anchor (101) is adapted for placement in an operative position wherein the anchor (101) extends at least partially through the body wall. A second helix (163) formed on the trocar (20) is sized and configured to engage the first helix (102) of the anchor (101) so that rotation of the trocar (20) relative to the anchor (101) moves the second helix (163) along the first helix (102). In this manner, the trocar is drawn into the anchor (101) as it moves into the body wall. A proximal force applied to the anchor (101) resists tenting of the abdominal wall. The anchor (101) also holds the layers of the body wall together thereby resisting peritoneal separation.