09393047 is referenced by 9 patents and cites 1669 patents.

A polyaxial bone screw assembly includes a threaded shank body having an integral upper portion receivable in an integral receiver, the receiver having an upper channel for receiving a longitudinal connecting member and a lower cavity cooperating with a lower opening. A down-loadable compression insert, a down-loadable friction fit split retaining ring having inner and outer tangs and an up-loadable shank upper portion cooperate to provide for pop- or snap-on assembly of the shank with the receiver either prior to or after implantation of the shank into a vertebra. The shank and receiver once assembled cannot be disassembled.

Title
Polyaxial bone anchor with pop-on shank and friction fit retainer with low profile edge lock
Application Number
13/573303
Publication Number
9393047 (B2)
Application Date
September 7, 2012
Publication Date
July 19, 2016
Inventor
James L Surber
Kansas City
KS, US
Roger P Jackson
Prairie Village
KS, US
Agent
John C McMahon
IPC
A61B 17/86
A61B 17/70
A61B 17/84
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