Patent ID: 9649137
Date: 2017-05-16
CPC Classifications: A61B

Claim:
1. A bone anchor assembly, comprising: a fixation element configured to couple to a bone, the fixation element having a lower bone-engaging portion for engaging an outer surface of the bone and an upper head portion, the upper head portion including an inwardly curved recessed portion and a generally hemispherical outer portion, the fixation element further connected to an upper housing portion having an internal bore extending there through, the housing portion having at least two sidewalls forming a first channel adapted to receive a connecting rod; and an insert sized and configured for insertion into the internal bore of the housing portion, the insert having an upper receiver portion for making an upper provisional connection to the connecting rod and a lower generally hemispherical portion for engaging with the inwardly curved recessed portion of the upper head portion, wherein the upper receiver portion includes a plurality of flexible fingers extending upwardly from the insert, at least two of the flexible fingers being spaced apart a first distance at a location distal from the insert, the first distance being less than a diameter of the connecting rod.