#$%^&*AU2013263815A120131219.pdf#####OBTURATOR TIPS ABSTRACT A surgical instrument (100) for use with a surgical portal apparatus, the surgical instrument (100) comprising: an elongate shaft (106) having proximal (102) and distal (104) ends and defining a longitudinal axis and a dilating member (210) disposed at the distal end (104) of the elongate shaft (106), the dilating member (210) having a tapered profile and having a substantially blunt distal tip, a cross-section of the dilating member (210) including four vertices (226-226"), and a profile of the dilating member (210) including one or more concave portions. (8074974_l)mml
