Surgery – Instruments – Orthopedic instrumentation
Patent
1991-11-25
1993-03-02
Hafer, Robert A.
Surgery
Instruments
Orthopedic instrumentation
606 72, 606 69, A61F 504, A61F 502
Patent
active
051905434
ABSTRACT:
A pedicle screw or hook has a slotted head for receiving a support rod. A support element in the head transverse to the slot provides limited pivotal movement for the support rod.
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patent: 5042982 (1991-08-01), Harms et al.
Hafer Robert A.
Hanlon Brian E.
Synthes (U.S.A.)
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