Patent ID: 6478806
Filing Date: 2002-11-12
Classification: A61B

Abstract:
A tissue penetrating medical instrument structured to be used with a trocar tube, said instrument comprising:a) an obturator comprising an elongated shaft and including a penetrating tip disposed at one end of said shaft, b) said penetrating tip including a base disposed at said one end and an apex extending outwardly in spaced relation to said base, c) said penetrating tip further including an exterior surface extending between said base and said apex, d) said exterior surface having a cross-section oriented perpendicular to a central longitudinal axis of said shaft and extending along at least a majority of a length of said penetrating tip and being defined by a substantially elliptical circumferential configuration, e) said exterior surface comprising a curvilinear configuration extending longitudinally between said apex and said base and being at least partially defined by a complex curve extending along at least a majority of a length thereof, and f) said complex curve comprising a substantially concave curve segment extending outwardly from said apex towards said base.