INSTRUMENT FOR PLACING A BONE SCREW, NOTABLY A SO CALLED "POLYAXIAL" SCREW OF VERTEBRAL OSTEOSYNTHESIS EQUIPMENT
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United States of America Patent
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-
N/A
Issued Date -
Sep 30, 2010
app pub date -
Nov 5, 2008
filing date -
Nov 5, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
This instrument (1) includes a first component (3) intended to engage with the threaded proximal portion of the screw, a second component (2) intended to engage with the threaded distal portion of the screw, and means (4) for driving the first component (3) into rotation relatively to the second component (2). The driving means (4) include an actuation member (26, 27) for performing the driving into rotation. According to the invention, the actuation member (26, 27) is rotationally bound to the first member (3) via releasable connection means (33, 36), being released beyond a torque threshold exerted on this actuation member (26, 27) in the direction of rotation corresponding to the mounting of the screw on the instrument (1).
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