Apparatus for stiffening and/or correcting the vertebral column
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United States of America Patent
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-
Oct 8, 1996
Grant Date -
N/A
app pub date -
Oct 7, 1994
filing date -
Feb 9, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for stiffening and/or correcting part of the vertebral column consisting of at least two vertebral is disclosed. The apparatus includes at least two screw-shaped retaining devices (12), each of which is fixed to one of the vertebrae in the affected part of the vertebral column. A compression or distraction rod (32) connects the retaining devices (12) to one another. The compression or distraction rod (32) includes a rod-shaped connecting element (20) connected to the retaining devices (12). The rod-shaped connecting element has at least one distance element (34) and arranged and mounted on such element between the two adjacent retaining devices (12) so as to maintain the distance between these two retaining devices (12). The connecting element (20) at one end (36) has a screw thread (38) and at the other end (42) has either a screw thread (44) or, where appropriate, a flange-like portion (50) to fix in position or brace the retaining devices (12) and distance element (34, 34', 34', 34'', 34'').
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