Surgery – Instruments – Orthopedic instrumentation
Patent
1997-06-10
1999-07-06
Buiz, Michael
Surgery
Instruments
Orthopedic instrumentation
606 57, 606 58, 606 59, 606102, A61B 1756
Patent
active
059191929
ABSTRACT:
A compression-distraction apparatus for fixation of two fragments of a fractured bone comprises three annular members placed in spaced-apart alignment around the limb of the broken bone. It features two outer members are each connected to one of the fragments by at least two through-going pins, while a third, median member is connected to the outer members by three bolts or studs after proper alignment of the fragments. A first outer member is to connected to the median member in non-parallel manner by bolts having a pivot incorporated therein, while firm connection to the second outer member is made only after measurement of the compression or distraction forces. For this purpose three gauges in the form of bent leaf springs and sensors are mounted between the median and the second member for measuring the force exerted by the placement of the first outer member in regard to the median member, and the second member is firmly secured to the median member by the aforementioned three bolts or studs only after attainment of a predesignated force.
REFERENCES:
patent: 5728095 (1998-03-01), Taylor et al.
patent: 5738684 (1998-04-01), Thomas et al.
Buiz Michael
Cottec Orthopaedic Technologies Development Ltd.
Woo Julian W.
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