Patent ID: 7344519
Filing Date: 2008-03-18
Classification: A61B

Abstract:
1. A cannula head for use in a trocar system having an obturator, said cannula head comprising: a generally rigid housing having a first passageway extending therethrough and defining an axis for receiving the obturator, said housing having a distal opening and a proximal opening to said first passageway; a lower seal attachable across said first passageway; a releasably attachable upper seal connectable to said housing across said proximal opening; wherein an outer surface of said housing comprises a reduced distal portion, an enlarged proximal portion, an enlarged front portion, and a reduced rear portion, said enlarged front portion and said reduced rear portion defining a generally oval-shaped cross-section across said axis and extending generally continuously from said reduced distal portion to said enlarged proximal portion; and a resilient non-slip material disposed on said housing, to define at least a portion of an outer surface of the cannula head.