Device and method for inserting a bone screw
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United States of America Patent
Stats
-
Nov 23, 1982
Grant Date -
N/A
app pub date -
May 18, 1979
filing date -
May 20, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for tightening a screw into bone material to a defined torque value M.sub.O less than that at which the bone irreversibly deforms including means for measuring the torque, M, necessary to obtain an angular rotation, .alpha., measured from the point where the screw first contacts the underlying material, and determining a value for M.sub.O as a function of M/.alpha..
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