07087057 is referenced by 261 patents and cites 19 patents.

The present invention generally provides a polyaxial fixation device having a shank with a spherical head formed on a proximal end thereof, and a receiver member having an axial passage formed therein that is adapted to polyaxially seat the spherical head of the shank. The polyaxial bone screw further includes an engagement member that is adapted to provide sufficient friction between the spherical head and the receiver member to enable the shank to be maintained in a desired angular orientation before locking the spherical head within the receiver member.

Title
Polyaxial bone screw
Application Number
10/608904
Publication Number
7087057 (B2)
Application Date
June 27, 2003
Publication Date
August 8, 2006
Inventor
Mark Hall
Bridgewater
MA, US
Niall Casey
Boston
MA, US
Dale Whipple
East Taunton
MA, US
Thomas Vincent Doherty
Bellingham
MA, US
David D Konieczynski
Needham
MA, US
Agent
Nutter McClennen & Fish
Assignee
DePuy Acromed
MA, US
IPC
A61B 17/86
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