Cannula assembly for robotically assisted pressure regulated laparoscopic surgical procedures

A cannula assembly for use in robotically assisted laparoscopic surgery, comprising:

• a) a robotic cannula portion having a proximal housing portion with an open end and an elongated tubular body portion extending distally from the proximal housing portion, the tubular body portion of the cannula being dimensioned and configured to accommodate passage of a surgical instrument having a 12 mm outer diameter;
• b) an adapter assembly configured for releasable engagement within the open end of the proximal housing portion of the cannula and including a tubular body portion with a central passage supporting a primary seal dimensioned to accommodate passage of a surgical instrument having a 12 mm outer diameter;
• and
• c) an insert tube dimensioned and configured to extend through the central passage of the tubular body portion of the adapter and the tubular body portion of the robotic cannula, the insert tube including an upper cup with an access port supporting a secondary seal dimensioned and configured to accommodate a surgical instrument having an 8 mm outer diameter.