07588575 is referenced by 135 patents and cites 178 patents.

An extension for use in a procedure to implant a stabilization system for bony structures such as vertebrae is described. The extension is formed by a tubular body with an engagement mechanism at one end to removably engage with a poly-axial head of a bone anchor assembly. A locking ring working with a slide are used to temporarily lock the poly-axial head and extension in the desired relationship for performing the procedure. The locking ring includes a slot in which resides a pin on the slider. Twisting the locking ring causes the pin to move in the slot and thereby move the slider either up or down. In one position a locking body on the slider engages with the poly-axial assembly locking the extension in place. In the other position, the locking body is disengaged from the poly-axial head allowing the extension to be decoupled from the bone anchor assembly.

Title
Extension for use with stabilization systems for internal structures
Application Number
10/989715
Publication Number
7588575 (B2)
Application Date
November 16, 2004
Publication Date
September 15, 2009
Inventor
Jennifer Diederich
Arlington
TX, US
James Spitler
Frisco
TX, US
Dennis Colleran
Frisco
TX, US
Agent
Eckert Seamans Cherin & Mellott
Assignee
Innovative Spinal Technologies
TX, US
IPC
A61B 17/70
View Original Source