Upper locking device for centromedullary pins used for osteosynthesis of fractures of the femur, tibia, and humerus
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United States of America Patent
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-
Mar 9, 1993
Grant Date -
N/A
app pub date -
Jan 10, 1992
filing date -
Jul 10, 1989
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A locking device has a metal locking part in which channels are provided to accommodate the upper ends of elongate pins. The lock preferably has a shape that is trapezoidal in longitudinal transverse section, has channels each having one blocked end to accommodate a pin, and is designed to be introduced into a recess of matching shape provided in the bone to be locked thereto. The ends of the pins, opposite the ends where the lock is located, are recurved to immobilize the pins relative to the bone both along their longitudinal axes and rotationally. The upper ends of pins are cut at the required length and introduced into the channels so that the upper blocked end of each of the channels of the lock opposes the upward and vertical forces transmitted by each of the pins.
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