Patent ID: 8550995
Filing Date: 2013-10-08
Classification: A61B

Abstract:
1. A surgical access device comprising: a proximal frame of fixed construction, the proximal frame defining a housing, the housing having a planar bottom surface defining a first plane, a top surface spaced apart from the bottom surface, an inner surface connecting the top surface and the bottom surface, and an outer surface spaced apart from the inner surface, the inner surface including a plurality of spaced apart openings to the housing, the housing including a central opening through the top surface and the bottom surface; a plurality of tissue engaging blades, each blade having a proximal end and a distal end, the proximal end of each blade including an opening, the proximal end of each blade including the opening positioned within the housing, each blade positioned within one of the spaced apart openings in the inner surface and extending from the frame such that the distal end of each blade is positioned outside of the housing of the frame, the plurality of blades and the inner surface aligned to enclose and define the central opening in the housing; and a plurality of blade adjustment mechanisms spaced about the frame, each blade adjustment mechanism comprising a shaft positioned through the opening in the proximal end of one of the blades such that each blade is rotatable about its respective shaft, each shaft defining a rotation axis for a respective blade, each blade adjustment mechanism further comprising a screw received within a threaded bushing connected to one of the blades, rotation of the screw causing the bushing to move along an axis of the screw to adjust the rotational orientation of the blade independent of other blades.