#$%^&*AU2019201059A120191003.pdf#####OPTICAL TROCAR ASSEMBLY ABSTRACT An obturator assembly (11) including: an obturator housing (12) defining a cavity therein； an obturator shaft (14) extending distally from the housing (12)； and a retention member (100) disposed within the cavity of the obturator housing (12), the retention member (100) including: a main body (101) defining an opening (102) dimensioned for receipt of a surgical instrument, the main body (101) having a first thickness； and a plurality of first sections (112) formed in the main body (101) and circumferentially disposed about the opening (102), each section of the plurality of first sections (112) having a second thickness that is less than the first thickness of the main body (101) to facilitate flexing of the retention member (100) during insertion of a surgical instrument into the opening (102).1/6 r-4 m r-4J r4U r1N r4N N-
