Multi-function device for the osteosynthesis of rachis
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United States of America Patent
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Mar 1, 1994
Grant Date -
N/A
app pub date -
Oct 4, 1991
filing date -
Feb 8, 1990
priority date (Note) -
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status (Latency Note)
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Abstract
The object of the invention is a device for the osteosynthesis of rachis having pedicular screws, of the type that comprises a threaded, ogival-shaped point (1) and a threaded head (3) that are separated by a hexagonal body (2), said screws being linked by a connection member (5,6) characterized in that it also comprises a sole fixing part (7,8) provided with a passage hole (9) for said threaded head on which a nut (4,4') is screwed for locking the assembly consisting of the fixing part (7,8) and the connection member (5,6) on said head (3), one of these, either the fixing part or the connection member having its inner face shaped in order to provide a groove (17,21) for the accomodation and locking against rotation of said hexagonal body (2).
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