09504496 is referenced by 7 patents and cites 1690 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 with tool receiving arm extensions, a down-loadable friction fit split retaining ring 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, friction fit retainer and winged insert
Application Number
13/896842
Publication Number
9504496 (B2)
Application Date
May 17, 2013
Publication Date
November 29, 2016
Inventor
James L Surber
Kansas City
KS, US
Roger P Jackson
Prairie Village
KS, US
Agent
Polsinelli PC
Assignee
Roger P Jackson
KS, US
IPC
A61B 17/70
A61F 2/08
A61B 17/86
A61B 17/04
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