Patent ID: 6322500
Filing Date: 2001-11-27
Classification: A61B

Abstract:
A surgical retractor, comprisingan adjustable frame for engaging patient tissue and for spreading open an incision in said tissue in substantially a first plane, to create a surgical field,an extension device mounted to said adjustable frame and being selectively moveable with respect to said adjustable frame and having first and second ends,wherein said extension device further comprises a positioning arm adjustably coupled to said frame and having first and second ends, wherein said first end is adapted for mounting to said adjustable frame, and said second end is adapted for mounting to a tool holder,wherein said adjustable frame includes two frame members each having first and second ends, said first ends of said frame members being mechanically coupled for varying, a spatial proximity between said second ends of said frame members,wherein said first ends of said frame members are mechanically coupled for pivoting about an axis substantially transverse to said first plane,a worm gear assembly, coupled to said first ends of said frame members, to adjust said spatial proximity between said second ends of said frame members.