Surgery – Instruments – Orthopedic instrumentation
Patent
1993-01-28
1995-12-26
Graysay, Tamara L.
Surgery
Instruments
Orthopedic instrumentation
A61B 1770
Patent
active
054783402
ABSTRACT:
An implant for stabilizing the vertebral column, having a longitudinal support and anchoring screws which can be fastened to the latter in an angularly stable manner so that even long-span multi-segmental instabilities can be treated. As the longitudinal support a sectional rod is provided, to which transverse brackets are clamped. The anchoring screws are fastened at an adjustable angle of inclination to a transverse bracket in each case. The transverse bracket comprises a clamping piece and a connector, which are screwed together. The clamping piece has two jaws which form a suitable receiving opening for the preferably cross-sectionally circular sectional rod and are drawn together by a clamping screw. In addition, two repositioning instruments for altering the position of the vertebral bodies during the operation are described, namely a traction instrument and an instrument which can be used as a basis of application for the traction instrument and which creates a connection between two neutral vertebrae.
REFERENCES:
patent: 2391537 (1945-12-01), Anderson
patent: 2774350 (1956-12-01), Cleveland, Jr.
patent: 4386603 (1983-06-01), Mayfield
patent: 4733657 (1988-03-01), Kluger
patent: 4957495 (1990-09-01), Kluger
patent: 4987892 (1991-01-01), Krag et al.
patent: 5219349 (1993-06-01), Krag et al.
patent: 5254118 (1993-10-01), Mirkovic
P. Kluger "Das Fixateurprinzip an der Rumpfwirbel-saule-. . . "; Fixateur externe-Fixateur interne Springer-Verlag Berlin Heidelberg 1989.
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