Surgery – Instruments – Orthopedic instrumentation
Patent
1990-09-18
1992-04-28
Hafer, Robert A.
Surgery
Instruments
Orthopedic instrumentation
606 71, 606 73, A61B 1756
Patent
active
051083957
ABSTRACT:
This implant has in combination a pair of clamps (2) provided with spikes (3) and with screws (5) for fixing to two corresponding vertebrae (V2, V4) and notches (23) to support the tips of the blades of a pair of distraction forceps, a rigid plate (6) for interconnecting the two clamps (2) and whose ends are pierced with orifices (17) in which may engage threaded pieces (12) of the camps (2) and whose length (L) corresponds to the distance between the posterior orifices (9) of the clamps (2) after distraction of the vertebrae, and lastly nuts (7) for rigidly connecting together the plate (6) and the clamps (2). This implant has, in particular, the advantage of permitting distraction by the forceps bearing against the clamps instead of against the vertebrae, which was not possible with the previously known plates; in addition, it is compact while at the same time being sufficiently solid, and thus prevents any risk of rubbing against the aorta.
REFERENCES:
patent: 3242922 (1966-03-01), Thomas
patent: 4382438 (1983-05-01), Jacobs
patent: 4411259 (1983-10-01), Drummond
patent: 4554914 (1985-11-01), Kapp
patent: 4582445 (1986-04-01), Warshawsky
patent: 4655199 (1987-04-01), Steffe
patent: 4657550 (1987-04-01), Daher
patent: 4805602 (1989-02-01), Puno
patent: 4827918 (1989-05-01), Olerud
patent: 4913134 (1990-04-01), Luque
patent: 4944743 (1990-07-01), Gotzen
Brown Michael
Hafer Robert A.
Societe de Fabrication de Materiel Orthopedique - Sofamor
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