Tool calibrator

Details Tool calibrator Tool calibrator

1997-09-26

1999-11-23

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Displacement, motion, distance, or position

G01C 1738

Patent

active

059879602

ABSTRACT:
A tool calibrator includes two portions shaped to slidably engage and secure a tool in a desired position. The tool is secured by a series of staggered V shaped grooves on each of the two portions having a known geometrical relationship with a diameter of a tool head of the tool. The tool calibrator further includes at least one position signaling device for communicating a location of the tool calibrator in an operating room or other area. A position and direction of a tip of the tool is determined by comparing a location of the tool secured within the tool calibrator to the location of each of the two portions. Further, based on the location of each of the two portions, the diameter of the tool head is calculated.

REFERENCES:
patent: 5181416 (1993-01-01), Evans
patent: 5186174 (1993-02-01), Schlondorff et al.
patent: 5383454 (1995-01-01), Bucholz
patent: 5494034 (1996-02-01), Schlondorff et al.
patent: 5517990 (1996-05-01), Kalfas et al.
patent: 5552822 (1996-09-01), Nallakrishnan
"A Frameless Stereotaxic Operating Microscope for Neurosurgery", Eric M. Friets, et al.; IEEE Transactions on Biomedical Engineering, vol. 36, No. 6, Jun. 1989 pp. 608-617.
"A frameless stereotaxic integration of computerized tomographic imaging and the operating microscope", David W. Roberts, M.D., et al.; J. Neurosurg; vol. 65; Oct. 1986; pp. 545-549.

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