Surgical access device with air release mechanism

A surgical access device comprising:

• an elongate tubular member having proximal and distal regions, the elongate tubular member defining a passage therethrough;
• a balloon anchor disposed in the distal region of the elongate tubular member, the balloon anchor including an expandable portion and a first portion, the first portion of the balloon anchor extending proximally from the expandable portion along an outer surface of the elongate tubular member;
• a valve assembly disposed in the proximal region of the elongate tubular member, the valve assembly fluidly coupled to the balloon anchor;
• a disc slidably disposed on the elongate tubular member;
• and
• a first blade having a first sharpened edge, the first blade slidably disposed in the disc and transitionable between a retracted position and an extended position, the first sharpened edge configured to penetrate the first portion of the balloon anchor at a location longitudinally spaced from the expandable portion.