Variable angle extension rod

Details Variable angle extension rod Variable angle extension rod

1995-09-13

1997-07-08

Buiz, Michael

Surgery

Instruments

Orthopedic instrumentation

606 71, 606 73, A61B 1756

Patent

active

056455445

ABSTRACT:
One embodiment of the invention a spinal fixation system includes an elongated spinal element (11) configured to extend adjacent the spine, and a plurality of fixation elements (15) each engagable to the spine and to the elongated spinal element (11). The embodiment further includes an extension member (28) having a head portion (30) defining a variable angle surface and an elongated portion (29) extending from the head portion, and a clamping member (31) for clamping the extension member (28) to the elongated spinal element (11). The clamping member (31) defines a mating surface configured for mating engagement with the variable angle surface of the extension member (28) to permit orientation of the elongated portion (29) of the extension member (28) at a plurality of angles relative to the elongated spinal element (11).

REFERENCES:
patent: 4771767 (1988-09-01), Steffee
patent: 5254118 (1993-10-01), Mirkovic
patent: 5257994 (1993-11-01), Lin
patent: 5261909 (1993-11-01), Sutterlin et al.
patent: 5330473 (1994-07-01), Howland
patent: 5437671 (1995-08-01), Lozier et al.
patent: 5474551 (1995-12-01), Finn et al.
patent: 5498262 (1996-03-01), Bryan
TSRH Crosslink Components Sheet, Danek Medical, Inc. (Copyright 1990).

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