Device comprising an implant and screws for fastening said implant to a bone, and a device for connecting two separated pieces of bone
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United States of America Patent
Stats
-
Nov 27, 1984
Grant Date -
N/A
app pub date -
May 22, 1981
filing date -
May 28, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A plate is provided with clearance holes and fastening screws. Each screw is provided in the region of its head with a clamping part subdivided into tongues by means of slots and provided with an internal opening bounded by a conical surface. To each screw belongs an expander having a conical outer surface. The expander is axially displaceable in relation to the clamping part to force the tongues of the clamping part apart and lock the screw in relation to the plate. A rigid connection between the plate and the screws is thus provided, even if reabsorption of bone material takes place at the bearing surface of the plate.
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