Patent ID: 9381046
Filing Date: 2016-07-05
CPC Classification: A61B

Claim Text:
1. A bone plate system comprising: a bone plate; a plurality of throughbores of the bone plate each extending through the bone plate along a respective bore axis; a plurality of bone anchors each having a head for driving a shank of the bone anchor into bone; a rigid pivot base received in one of the throughbores and having an opening for receiving the head of one of the bone anchors with the pivot base configured to not deform as the bone anchor head is seated in the pivot base opening; floor portions of the bone plate extending laterally transverse to the bore axis inwardly into the one throughbore on either side thereof that support the rigid pivot base and define a narrow section of the one throughbore; opposite, outer side wall portions of the rigid pivot base; a pivot member of the pivot base extending laterally outward away from one of the outer side wall portions thereof and being supported on one of the bone plate floor portions with the pivot member pivotally connecting the rigid pivot base to the bone plate and permitting the pivot base and bone anchor head seated therein to pivot within the one throughbore; wherein the head of the one bone anchor includes a resilient portion; and a locking member configured to cooperate with the resilient portion of the one bone anchor head to expand the resilient portion of the one bone anchor head against the rigid pivot base for locking the head of the one bone anchor in the rigid pivot base opening to the rigid pivot base.