IRIS valve with control ring

A surgical access port, comprising:

• a) a first ring and a second ring defining an opening, the first ring being rotateable relative the second ring in an opening direction and being rotateable relative the second ring in a closing direction;
• b) a flexible and resilient iris valve positioned in the opening and connected to the first and second rings, the iris valve having a closed position and an opened position based on the relative angular position of the first and second rings, the iris valve inducing a rotational bias on the first ring in the opening direction;
• c) a lock connected to the first and second rings counteracting the iris valve rotational bias;
• d) a third ring operable to release the lock when rotated in the opening direction and being operable to close the valve when rotated in the closing direction.

A surgical access device, comprising:

• a) a proximal ring;
• b) a distal ring;
• c) an iris valve connected to the proximal and distal ring, the iris valve having a closed position and an opened position based on the relative angular position of the proximal and distal rings;
• d) a control ring rotateable relative the proximal and distal rings, the control ring comprising:
• (i) a neutral state wherein the iris valve is locked in its current position;
• (ii) a loosening state wherein rotational movement of the control ring in a first direction will adjust the iris valve toward the opened position;
• and
• (iii) a tightening state wherein rotational movement of the control ring in a second direction will adjust the iris valve toward the closed position.