06964666 is referenced by 153 patents and cites 48 patents.

A bone screw having a head and a shank. The shank having a ball thereon and the head having a socket for receiving the ball. The ball being externally threaded and the chamber communicating with the exterior of the head through a threaded bore. The ball being threadably received through the bore and being swivelable in the chamber after passing through the bore. The bone screw including at least one set screw that operably engages the ball to lock the head in position relative to the shank.

Title
Polyaxial bone screw locking mechanism
Application Number
10/409935
Publication Number
6964666 (B2)
Application Date
April 9, 2003
Publication Date
November 15, 2005
Inventor
Roger P Jackson
Prairie Village, 66207
KS, US
Agent
John C McMahon
IPC
A61B 017/58
View Original Source