Patent ID: 7572280

Claim:
An anchor assembly, comprising: an anchor member including a proximal end and a distal portion extending from said proximal end for engagement with a bone member; a coupling member pivotally coupled to said proximal end of said anchor member, said coupling member extending along a longitudinal axis and including a lower receiver portion defining an interior receptacle extending about said longitudinal axis for receiving said proximal end of said anchor member with said distal portion of said anchor member extending distally from said lower receiver portion, said coupling member further including a post extending proximally from said receiver portion along said longitudinal axis away from said proximal end of said anchor member, said coupling member defining at least one axially opening window in communication with an exterior of said coupling member; a member positioned around said post proximally of said anchor member so that said post extends through said member; and a crown positioned in said receptacle of said coupling member adjacent said proximal end of said anchor member, said crown including a seating portion extending proximally from said anchor member along said longitudinal axis, wherein said seating portion of said crown includes at least three axially extending arms circumferentially distributed about said crown, and said at least one window of said coupling member includes at least three axially extending windows circumferentially distributed about said coupling member that extend through said coupling member between said interior receptacle and said exterior, each of said number of arms extend proximally from within said receptacle and through a respective one of said number of windows and contact said member positioned around said post with said post extending through said member.