Surgical access device including alternating cutout fluid flow pathway for anchor inflation and deflation

A cannula comprising:

• an elongated shaft having a proximal end portion including an anchor inflation port and a distal end portion including an expandable anchor, the elongated shaft including:
• an inner tube including a channel extending longitudinally through the inner tube along a length of the inner tube, first openings defined in an outer surface of the inner tube that are in communication with the channel and disposed on a first side of the channel in longitudinally spaced relation relative to each other, and second openings defined in the outer surface of the inner tube that are in communication with the channel and disposed on a second side of the channel in longitudinally spaced relation relative to each other, the first and second openings disposed in staggered relation relative to each other longitudinally along the length of the inner tube;
• and
• an outer tube disposed over the inner tube, an inner surface of the outer tube and the channel, the first openings, and the second openings of the inner tube forming an inflation lumen, the inflation lumen in communication with the anchor inflation port and the expandable anchor.

A cannula comprising:

• an anchor inflation port;
• an expandable anchor;
• and
• an elongated shaft including a proximal end portion coupled to the anchor inflation port and a distal end portion coupled to the expandable anchor, the elongated shaft including:
• an inner tube including a channel extending longitudinally through a length of the inner tube, first openings defined in an outer surface of the inner tube that are in communication with the channel, and second openings defined in the outer surface of the inner tube that are in communication with the channel, the first openings laterally spaced relative to the second openings and disposed in a longitudinally alternating arrangement with the second openings along the length of the inner tube;
• and
• an outer tube disposed over the inner tube, an inner surface of the outer tube and the channel, the first openings, and the second openings of the inner tube forming an inflation lumen, the inflation lumen in communication with the anchor inflation port and the expandable anchor.