Height-adjustable artificial vertebral body
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United States of America Patent
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Nov 23, 1999
Grant Date -
N/A
app pub date -
Nov 24, 1997
filing date -
May 24, 1995
priority date (Note) -
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status (Latency Note)
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Abstract
A substitute vertebra with adjustable height is provided with a sleeve-shaped central part (1) having a wall with a plurality of apertures (5, 6), the central part comprising a left-handed thread adjacent to its first edge and a right-handed thread adjacent to its second edge. A cylindrical first part (7) is connected with the one threaded portion through a corresponding thread and a cylindrical second part (9) is connected to the other threaded portion through a corresponding thread. Both parts (7, 9) also have walls with a plurality of apertures (8). The two parts (7, 9) both have a plurality of teeth (8) provided at their free edges.
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