Geometrical instruments – Gauge – Anatomical
Reexamination Certificate
2005-08-16
2005-08-16
Bennett, G. Bradley (Department: 2859)
Geometrical instruments
Gauge
Anatomical
C033S227000, C600S587000, C606S087000, C606S089000, C382S128000
Reexamination Certificate
active
06928742
ABSTRACT:
A method of finding the position of a mechanical axis running in the longitudinal direction through a limb that is rotatably supported by its first end in a center of rotation that is not fixed and is not accessible for the mechanical determination of coordinates, by means of an optical coordinate-measurement device with an indicator to detect measurement-point coordinates in one rotational position of the limb, such that, for each rotational position, a multi-point indicator rigidly attached near the second end of the limb signals several measurement-point coordinates, and, from the sets of measurement-point coordinates detected in a plurality of rotational positions, at least one group is selected that can be assigned to the same site of the center of rotation, and the measurement-point-coordinate sets assigned to this site of the center of rotation are used to calculate the mechanical axis.
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Berner Werner
Broers Holger
Hauri Bernhard
Hauri Thomas
Bennett G. Bradley
Cohen Amy R.
Plus Orthopedics AG
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