Surgery – Instruments – Orthopedic instrumentation
Patent
1988-12-21
1991-12-24
Apley, Richard J.
Surgery
Instruments
Orthopedic instrumentation
606 61, A61F 501
Patent
active
050748645
ABSTRACT:
The present invention relates to a mid-line clamp assembly for use in a posterior spinal system including components designed to be affixed to the spinal column of a person to correct for various lateral and sagittal deformities. The clamp assembly includes inferior and superior clamp halves slidably interconnected with one another. Each clamp half has a body portion and a shoe connected to the body portion. Each clamp half has a stud connected to the body portion. The studs are connectable to other members incorporated in this spinal system for fixing the position of the clamp halves with respect to each other. The clamps are used in conjunction with the spinal system which also includes a pair of smooth surfaced rods mounted in spaced relation to one another on the spinal column in conjunction with various fixation devices such as the clamps with hook bodies, hooks, screws with hook bodies and couplers. Each such fixation device utilizes locking sleeve assemblies at each connection point to secure the respective fixation device to the respective rod or rods. The coupler assemblies are provided to maintain the spacing of the rods. The method of performing surgery using the posterior spinal system is also disclosed.
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Cozad Trent E.
Lower Jerry L.
Lozier Antony J.
Tencer Allan F.
Apley Richard J.
Doyle J. L.
Geringer Margaret L.
Zimmer Inc.
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