Patent ID: 8409085
Filing Date: 2013-04-02
Classification: A61B

Abstract:
1. A surgical retention port, comprising: a hollow inner cannula having a distal end and defining a longitudinal axis; a medical instrument longitudinally displaceable within the inner cannula, said medical instrument removably extending through said inner cannula, said medical instrument including a tapered distal tip; a plurality of radially extendible fingers coupled to said distal end of said hollow inner cannula, each of said radially extendible fingers having a pivot portion and an extending portion, each of said pivot portions rotating about a pivot axis circumferentially displaced from the pivot axes of the other pivot portions, each of said pivot axes extending parallel to said longitudinal axis; and a hollow outer cannula having a proximal end, a distal end defining a periphery and a plurality of windows, said distal end including a plurality of bars between said windows, wherein in a first configuration, said inner cannula is in a first rotational orientation relative to said outer cannula and said plurality of radially extendible fingers assume a collapsed arrangement with said extending portions at least partially contained within said plurality of windows and substantially within said periphery, and in a second configuration, said inner cannula is in a second rotational orientation relative to said outer cannula which is rotationally displaced from said first rotational orientation and said plurality of radially extendible fingers assume an opened arrangement with said extending portions extending radially through said plurality of windows and beyond said periphery in a manner substantially perpendicular to said longitudinal axis.