#$%^&*AU2008212049B220131017.pdf#####BLADELESS OBTURATOR FOR USE IN A SURGICAL TROCAR ASSEMBLY ABSTRACT 5 An obturator assembly (100) for use in dissection of tissue includes an obturator housing (102), an obturator member (106) mounted to the obturator housing (102) and obturator sleeve (104) coaxially mounted about the obturator member and adapted for reciprocal longitudinal movement between a retracted position and an extended position. The obturator member (106) includes an obturator rod (158) and a penetrating end. The io penetrating end defines a substantially planar dissecting segment (174) and a central rod segment (170) extending from the planar dissecting element. The planar segment of the penetrating end of the obturator member (106) defines atraumatic outer edges which may be arcuate in character. The central rod segment (170) defines a distal entry surface which is also atraumatic, and may be arcuate as well. In one embodiment, the distal entry is surface of the central rod segment (170) and the atraumatic edges of the planar dissecting segment (174) are at least partially exposed from the nose shield (124) when in the extended position of the obturator sleeve (104). The obturator sleeve may include a generally tapered nose shield (124) for at least partially accommodating the penetrating end.1/10 10 FIG. 1 102 10 10( 1002 1004 1000 FIG. 2
