A surgical apparatus (10), for positioning within a tissue tract to access an underlying body cavity, is provided. The surgical apparatus includes a first (100) and second (200) member. The first member has a proximal ramp section (114), an accordion section (110), and a retaining portion (120). The first member defines a first longitudinal axis, a first proximal end (100a), and a first distal end (100b). The second member has a tubular proximal section (202), a portal portion (210), and a distal flange (220). The second member defines a second longitudinal axis, a second proximal end (200a), and a second distal end (200b). The second member includes a retaining structure (214) to couple the first member to the second member. The first member is located at least partially in the tubular section of the second member.
