Surgery – Instruments – Orthopedic instrumentation
Reexamination Certificate
1998-08-28
2001-04-10
Mancene, Gene (Department: 3732)
Surgery
Instruments
Orthopedic instrumentation
C623S017110
Reexamination Certificate
active
06214005
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to an apparatus for use in retaining vertebrae of a spinal column in a desired spatial relationship. In particular, the present invention relates to an apparatus for use in retaining cervical vertebrae of a human spinal column in a desired spatial relationship.
2. Description of the Prior Art
There are various known devices for retaining vertebrae of a spinal column in a desired spatial relationship. Certain of such known devices include rods connected to and extending between vertebrae and certain of such known devices include plates connected to and extending between vertebrae.
SUMMARY OF THE INVENTION
The present invention is an apparatus for retaining first and second vertebrae of a spinal column in a desired spatial relationship. The apparatus includes a longitudinal member positionable along the spinal column. A member connectable with the first vertebra has first and second fastener openings and a portion engageable with the longitudinal member. A first fastener is extendable through the first fastener opening in the member to connect the member with the first vertebra. The first fastener has a first end portion for attachment to the first vertebra and has a longitudinal axis. A second fastener is extendable through the second fastener opening in the member to connect the member with the first vertebra. The second fastener has a first end portion for attachment to the first vertebra and has a longitudinal axis.
In accordance with one feature of the present invention, the longitudinal axis of the first fastener and the longitudinal axis of the second fastener converge at an acute angle as viewed in the sagittal plane when the first and second fasteners connect the member with the first vertebra. The apparatus also includes means for connecting the longitudinal member with the second vertebra.
In accordance with another feature of the present invention, the member connectable with the first vertebra has a body portion. The member also has a lip portion projecting in a first direction from the body portion of the member. The lip portion of the member is engageable with a surface of the first vertebra facing toward the second vertebra.
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Benzel Edward C.
Dinello Alex
Smith Aaron C.
Wefers Michael H.
Yuan Hansen A.
DePuy Acromed, Inc.
Mancene Gene
Priddy Michael B.
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