Medullary caliper

Details Medullary caliper Medullary caliper

1991-02-27

1992-12-15

Shay, Randy C.

Surgery

Instruments

Orthopedic instrumentation

128774, 33512, 335421, 335584, A61F 504

Patent

active

051712482

ABSTRACT:
An medullary caliper comprising a sleeve or tube with internally actuated caliper arms at a distal end thereof. The sleeve is graduated so that the depth at which a measurement is being taken can be immediately determined. A control rod extends the caliper arms radially outward within the medullary canal to perform the measurement. Displacement of the control rod is translated by a scale into a direct reading of the diametric dimension of the medullary canal.

REFERENCES:
patent: 3352021 (1967-11-01), Leach et al.
patent: 4016867 (1977-04-01), King et al.
patent: 4362167 (1982-12-01), Nicolai et al.
patent: 4536960 (1985-08-01), Muti
patent: 4982505 (1991-01-01), Pocci
Sweet, "Expansion Gage Checks Internal Protected Holes", American Machinist, Dec. 25, 1950, p. 122.

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