Surgery – Instruments – Orthopedic instrumentation
Patent
1997-05-15
1998-07-28
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 60, 606 73, A61B 1770
Patent
active
057857113
ABSTRACT:
A polyaxial orthopedic device for use with rod implant apparatus includes a screw having a curvate head, a cross bar mounting element having a socket into which the head of the screw is initially polyaxially nested. The cross bar mounting element further includes a vertical split which permits the socket to be expanded or compressed via the application of a corresponding force directed at the split. The cross bar mounting element further includes a pair of upwardly extending members which define a trough into which a cross bar element is positioned. The cross bar element includes features which permit the secure fixation of a rod thereto, as well as a selectively slideable element, such as a nut, which may be tightened to apply the compressive force necessary to compress the interior volume onto the head of the screw, thus locking the assembly in place.
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Errico Joseph P.
Errico Thomas J.
Ralph James D.
Tatar Stephen
Buiz Michael
Errico, Esq. Joseph P.
Reip David O.
Third Millennium Engineering LLC
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